نتایج جستجو برای: lead pb2

تعداد نتایج: 341196  

2009
Maryam Ranjbar S. Heidar Mahmoudi Najafi Seik Weng Ng

The N-oxide O atom of the minoxidil unit in the 1/1 adduct with lead(II) iodide, [PbI(2)(C(9)H(15)N(5)O)](n), bridges two Pb(II) atoms, as do each of the I atoms. The bridging inter-actions give rise to a linear chain motif that propagates along the a axis of the ortho-rhom-bic unit cell. The coordination sphere around the six-coordinate Pb(II) atom is a distorted ψ-monocapped octa-hedron in wh...

Journal: :Environmental pollution 2007
Peter M Kopittke Colin J Asher Rosemary A Kopittke Neal W Menzies

A concentration as low as 1 microM lead (Pb) is highly toxic to plants, but previous studies have typically related plant growth to the total amount of Pb added to a solution. In the present experiment, the relative fresh mass of cowpea (Vigna unguiculata) was reduced by 10% at a Pb2+ activity of 0.2 microM for the shoots and at a Pb2+ activity of 0.06 microM for the roots. The primary site of ...

Journal: :Colloid and Interface Science Communications 2021

In this study, three types of sludge-derived biochars (BC1, BC2 and BC3) were prepared by 1) original sludge, 2) sludge after K2FeO4 conditioning, 3) acidification + conditioning. The results show that the biochar from conditioned has additional functional groups, its Pb2+ removal effect is greatly enhanced. concentration in effluent can be reduced to <0.06 μg/L. only remove at most 58.02% Pb2+...

M Abdollahi M Sharifzadeh M Soodi N Naghdi N Ostad

Lead (Pb2+) is a well known neurotoxin that was frequently found in the environment and chronic exposure to lead has been matter of public health. In the present study the effect of lead on spatial memory in developmentally exposed rats and their dams in Morris water maze task were investigated. Female rats were divided into three groups and two groups exposed to 250 and 750 part per million (p...

Journal: :PLoS Pathogens 2008
Franck Tarendeau Thibaut Crepin Delphine Guilligay Rob W. H. Ruigrok Stephen Cusack Darren J. Hart

Understanding how avian influenza viruses adapt to human hosts is critical for the monitoring and prevention of future pandemics. Host specificity is determined by multiple sites in different viral proteins, and mutation of only a limited number of these sites can lead to inter-species transmission. Several of these sites have been identified in the viral polymerase, the best characterised bein...

2017
Mervat Morsy Abbas Ahmed El-Gendy Naziha M. Hassanein Hussein Abd El-Hay Ibrahim Doaa H. Abd El-Baky

The ability of dead cells of endophytic Drechslera hawaiiensis of Morus alba L. grown in heavy metals habitats for bioremoval of cadmium (Cd2+), copper (Cu2+), and lead (Pb2+) in aqueous solution was evaluated under different conditions. Whereas the highest extent of Cd2+ and Cu2+ removal and uptake occurred at pH 8 as well as Pb2+ occurred at neutral pH (6-7) after equilibrium time 10 min. Ini...

M Abdollahi M Sharifzadeh M Soodi N Naghdi N Ostad

Lead (Pb2+) is a well known neurotoxin that was frequently found in the environment and chronic exposure to lead has been matter of public health. In the present study the effect of lead on spatial memory in developmentally exposed rats and their dams in Morris water maze task were investigated. Female rats were divided into three groups and two groups exposed to 250 and 750 part per million (p...

2016
Joshua C. D. Long Ervin Fodor

UNLABELLED The polymerase basic 2 (PB2) subunit of the RNA polymerase complex of seasonal human influenza A viruses has been shown to localize to the mitochondria. Various roles, including the regulation of apoptosis and innate immune responses to viral infection, have been proposed for mitochondrial PB2. In particular, PB2 has been shown to inhibit interferon expression by associating with the...

2017
Tinghong Zhang Zhen Ye Xiaohai Yang Yujie Qin Yi Hu Xiaomei Tong Wenbin Lai Xin Ye

Post-translational modifications of viral proteins play important roles in regulating viral replication. Here we demonstrated that the PB2 of influenza A virus (IAV) can be modified by NEDD8. We revealed that E3 ligase HDM2 can promote PB2 NEDDylation. Overexpression of either NEDD8 or HDM2 can inhibit IAV replication, while knockdown of HDM2 has the opposite effect. Then we identified residue ...

Journal: :Separation science plus 2022

DOI: 10.1002/sscp.202200019 The cover picture shows that the lead ion (Pb2+) and copper (Cu2+) in lake water are detected by UV-Vis analysis using gold nanoparticles (Au NPs) as colorimetric probe. formation of Pb-O bond between Pb2+ L-Cysteine can induce significant aggregation Au NPs (blue color), conversely, Cu catalyze oxidation Cysteine prevent (pink color). By analyzing absorption spectra...

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