Host-guest driven ligand replacement on monodisperse inorganic nanoparticles

ISSN:2040-3364ISSN:2040-337

D:Int Agrophysics-3AlizadehAlizadeh.vp

A b s t r a c t. To investigate the effect of amended substrates on cadmium uptake by one-year old poplar rooted cuttings a pot culture was carried out. Pots were filled with three substrates. Four treatments of Cd supply including were organized. The results showed that higher biomass productions in substrates A and B compare to substrate C, led to an increase total Cd uptake two times more than that in substrate C, at 150 mg kg -1 concentration. Meanwhile maximum total uptake occurred in substrate B at 100 mg kg -1 concentration. Using synthetic chelators such as ethylenediaminetetraacetic acid in order to achieve high removal rate led to increased environmental impacts while they are not expected when such environmental friendly approaches are applied. K e y w o r d s: soil, cadmium, ethylenediaminetetraacetic acid, phytoextraction, substrat

D:Int Agrophysics -3 AlizadehAlizadeh.vp

A b s t r a c t. To investigate the effect of amended substrates on cadmium uptake by one-year old poplar rooted cuttings a pot culture was carried out. Pots were filled with three substrates. Four treatments of Cd supply including were organized. The results showed that higher biomass productions in substrates A and B compare to substrate C, led to an increase total Cd uptake two times more than that in substrate C, at 150 mg kg -1 concentration. Meanwhile maximum total uptake occurred in substrate B at 100 mg kg -1 concentration. Using synthetic chelators such as ethylenediaminetetraacetic acid in order to achieve high removal rate led to increased environmental impacts while they are not expected when such environmental friendly approaches are applied. K e y w o r d s: soil, cadmium, ethylenediaminetetraacetic acid, phytoextraction, substrat

Molecular investigation of mtDNA A1555G, A3243G and A7445G mutations among the non syndromic hearing loss cases in Fars, Iran

Background: Hearing loss is a sensorineural disorder occuring in 1 out of 500 births. It happens due to some genetic/environmental causes or both. More than 60 of cases are noninherited and 80 non syndromic with autosomal recessive inheritance. In the present study we investigated the frequency of mtDNA A1555G, A3243 and A7445G mutations among the patients in Fars province.Materials and Methods: Seventy two non syndromic hearing loss subjects were studied. DNA was extracted using standard phenol-chloroform method. The screening of the mitochondrial gene mutations were performed using PCR-RFLP procedure. Finally, the possible mutations were confirmed by direct sequencing. Results: None of the A1555G, A3243G and A7445G mutations was detected in this study. However, destroying a MTTL1 restriction site for the investigation of A3243G mutation, revealed a G3316A with allelic variant of 1.4 in the deaf subjects. Conclusion: Our data indicated that the mitochondrial A1555G, A3243 and A7445G mutations have no role in auditory deficits in patients studied

Direct C-S bond formation: Via C-O bond activation of phenols in a crossover Pd/Cu dual-metal catalysis system

A dual-metal catalysis system including a newly prepared nanoparticle [SiO 2 @organic-linker(OL)@Pd (II) ] and CuI was introduced with ultra-high catalytic activity (high turnover number (TON), up to 19000) to a one-pot and odorless synthesis of unsymmetrical aryl sulfides by crossover C-S bond formation. The reaction proceeds via C-O bond activation of phenols and direct C-S bond formation in the presence of S 8 as an oddorless sulfur source and aryl boronic acids under mild conditions (room temperature). The catalyst could be recycled up to five times without an obvious change in its activity. © 2019 The Royal Society of Chemistry

DFNB59 Gene Mutations and its Association with Deafness in Schoolchildren in Kohgilooyeh & Boyerahmad Province

Introduction & Objective: Hearing loss is a common disease affecting millions of people worldwide. Hearing loss can be caused due to genetic or environmental factors or even both. The genetic of hearing defect is highly heterogeneous and more than 100 genes are predicted to cause this disorder in humans. A newly identified gene (DFNB59) has been shown to cause deafness in some populations. Here we report mutation analysis for DFNB59 gene in 88 genetic non-syndromic hearing loss subjects. Materials & Methods: In this descriptive-lab based study which was conducted at the Cellular and Molecular Research Center of Shahrekord University of Medical Sciences, DNA was extracted from the peripheral blood samples using standard phenol chloroform procedure. Mutation analysis for DFNB59 gene was performed using PCR-SSCP/HA protocol. The suspected DFNB59 which was detected as shifted bands on PAGE were then confirmed by direct sequencing strategy. Results: Two DFNB59 polymorphisms including c.793C>G and c.793C>T were detected in 8 and 1 deaf subjects respectively. Conclusion: We conclude that there is no association between DFNB59 mutations and deafness in the studied patients in the region