نتایج جستجو برای: extractable cd were diminished by using cd
تعداد نتایج: 9370970 فیلتر نتایج به سال:
Crohn's disease (CD) is a chronic inflammatory condition with uncertain aetiology. Dysfunction of immunoregulatory factors and overproduction of reactive oxygen species (ROS) may contribute to the damage of the gastrointestinal tract. Superoxide dismutase (SOD) and glutathione peroxidase (GPx) are involved in protection of cells from the damaging effects of ROS. The aim of the study was to asse...
The study compares nitric acid and ethylenediaminetetraacetic acid (EDTA) extraction of forest soils for the analysis of trace metals Fe, Mn, Zn, Cu, Pb, and Cd. Fifty forest soil samples from ten different locations were extracted using both methods. The two extraction procedures were compared through regression analysis for each element. All elements were analysed by flame atomic absorption s...
The study was designed to investigate the role of magnesium (Mg) pretreatment on reduced glutathione (GSH) levels in kidney, liver and testis of mice intoxicated with cadmium (Cd). Animals were divided into four groups: I--controls, II--Cd group: mice intoxicated with Cd, III--Mg+Cd group: mice given Mg 1 h before Cd, and IV--Mg group: mice given only Mg. In acute time--response studies, the si...
core decompression (cd) of the femoral head is one of the effective treatments of avascular necrosis (avn), especially in the early stages of the disease. to investigate further the value of cd in treating the avn, this study was performed on patients with symptomatic avn with different etiologies who were treated with cd. this study was carried out on 25 patients (with the total number of 37 f...
the research questions were as follows: 1. is there any relationship between the students concious awareness of the form and implications of the conjuncations and their improvement in using appropriate conjunctions? 2. does students knowledge of the from and the implications of the conjunctions help them to produce more coherent writings. 3. does a comparison between english conjunctions and th...
iron (in zero-valent and oxide forms) is used to remove numerous organic and inorganic contaminants in environment. however, there are few reports, especially in nano scale, on the remediation of heavy metals contaminated soils using zero-valent iron in the literature. in this study, the effect of iron on the availability of heavy metals was evaluated in a calcareous soil spiked with cadmium, z...
The effect of biochar amendment of a multi-element contaminated soil on the transfer and accumulation of Cd, Zn, Pb, and As in wheat was investigated in this study. Addition of biochars from rice residues (straw, husk, and bran) significantly decreased shoot Cd, Zn, and Pb concentrations by up to 71%, 37%, and 60%, respectively, but increased As by up to 199%. Biochar additions decreased the NH...
The main sources of cadmium in soil-plant continuum in amounts that might present a hazard are liquid and solid wastes of sewage sludge, farm manures and fertilizers. In the southwest of Iran (Khuzestan Province) over 50,000 ha of land is under sugarcane (Saccarum officinarum) cultivation and more than 80,000 ha will be under sugarcane by the end of the year 2000. In these sugarcane fields, abo...
Two contrasting ecotypes of Dianthus carthusianorum L., metallicolous (M) and nonmetallicolous (NM), were cultivated in hydroponics at 0-50 μM Cd for 14 days to compare their Cd accumulation, sensitivity and tolerance mechanisms. While both ecotypes contained similar concentrations of Cd in the shoots and roots, the M ecotype was more Cd-tolerant (as measured by fresh weight production and root...
Cadmium (Cd) pollution poses a growing threat to rice production in acidic paddies. In south China, common agricultural practice involves the combined utilization of Chinese milk vetch (M) and straw (R). However, it is unclear how addition lime these amendments affects Cd bioavailability accumulation soil. Control (CK), chemical fertilizer (F), + (MRF), (MRFL) treatments were applied develop ki...
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