نتایج جستجو برای: جذب یون pb2
تعداد نتایج: 37300 فیلتر نتایج به سال:
در این مطالعه، جذب زیستی یون های کادمیم از پسابهای صنعتی توسط مخمر ساکارومایسس سرویسیه مورد بررسی قرار گرفت. برای افزایش میزان جذب در این مطالعه یک آماده سازی اولیه توسط محلول اتانول 70 درصد بر روی سلول های مخمر انجام شد که موجب افزایش میزان جذب توسط این سلول ها گردید. مقادیر 5، 37/5 میلی گرم بر لیتر و 0/1 گرم بر لیتر برای ph، غلظت اولیه کادمیم و غلظت بیومس، به عنوان شرایط بهینه در میزان جذب تع...
در این کار تحقیقاتی جذب یون های فلزات سنگین و سمی Pb+2، Cd2+ و Hg2+ از آب توسط کربن فعال مورد مطالعه قرار گرفته شده است. کربن فعال مورد استفاده به صورت پودری بود و سیستم جذب به صورت منقطع به کار گرفته شد. آزمایش های اولیه ما نشان داد که کربن فعال پودری برای جذب فلزات سنگین از آب، بسیار موثرتر از گرانول عمل می کند. کربن های فعال پودری برای جذب فلزات سنگین از آب، بسیار موثرتر از گرانول عمل می کن...
We modeled the stimulated hydrogel volume transitions of a material which binds Pb2+ and is used as a photonic crystal chemical sensing material. This material consists of a polymerized crystalline colloidal array (PCCA) hydrogel which contains a crown ether molecular recognition group. The PCCA is a polyacrylamide hydrogel which embeds a crystalline colloidal array (CCA) of monodisperse polyst...
BACKGROUND Influenza A virus has a RNA-dependent RNA polymerase (RdRp) that is composed of three subunits (PB1, PB2 and PA subunit), which assemble with nucleoproteins (NP) and a viral RNA (vRNA) to form a RNP complex in the host nucleus. Recently, we demonstrated that the combination of influenza ribonucleoprotein (RNP) components is important for both its assembly and activity. Therefore, we ...
An electrochemical sensor incorporating a signal enhancement for the determination of lead (II) ions (Pb2+) was designed on the basis of the thrombin-binding aptamer (TBA) as a molecular recognition element and ionic liquid supported cerium oxide (CeO2) nanoparticles-carbon nanotubes composite modification. The composite comprises nanoparticles CeO2, multi-wall carbon nanotubes (MWNTs) and hydr...
The potency of Pb2+ inhibition of glutamate-activated currents mediated by N-methyl-D-aspartate (NMDA) receptors was dependent on the subunits composing the receptors when functionally expressed in Xenopus laevis oocytes. Pb2+ reduced the amplitudes of glutamate-activated currents and shifted the agonist EC50 values of NMDA receptors consisting of different subunit compositions. The IC50 values...
Biochar is widely used as an adsorbent to remove heavy metals from aqueous solutions. To investigate the contribution of soluble minerals (mainly anions) to Pb2+ removal in solution, wheat straw biochar was washed with deionized water to remove soluble minerals. Batch adsorption was conducted using washed biochar (WBC) and unwashed biochar (BC) to absorb Pb2+. After washing, the pH and ash cont...
The divalent cation lead (Pb2+) blocks sustained and transient voltage sensitive calcium channel currents of cultured rat dorsal root ganglion cells. The IC50 for inhibition of the total peak current evoked by a step depolarization from -80 to 0 mV was 0.6 microM, compared to an IC50 of 2.2 microM for Cd2+. The current activated by a depolarization from -40 to 0 mV was inhibited by 50% by 1.0 m...
The usage of wastes of bagasse would be admirable from environmental and solid waste management point of view. Thus, herein, this data set present a facile method for providing an adsorbent from mixture of bagasse-bentonite. The prepared adsorbent was applied to remove Pb2+ from aqueous solution. It was conducted in laboratory scale using completely randomized design with variations in mixed ma...
Highly pathogenic avian influenza (HPAI) H5N8 virus has caused considerable economic losses to poultry industry and poses a great threat to public health. Our previous study revealed two genetically similar HPAI H5N8 viruses displaying completely different virulence in mice. However, the molecular basis for viral pathogenicity to mammals remains unknown. Herein, we generated a series of reassor...
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