Showing 2 results for Taghizadeh
R Taghizadeh Asl , Mohammad K., R Majdzadeh ,
Volume 3, Issue 2 (3 2005)
Abstract
Awareness regarding incidence pattern of disease is an important issue for researchers. To
explore seasonal pattern of TB in Iran we decided to do this study.
This study have been done as an ecologic study .all notified TB cases during 1997 to 2001
have been included in this study .all data have been processed and analyzed by the Cosinor
analysis method.
We found 59756 registered TB cases during above mentioned years.
TB in this 5 year period has seasonal pattern (amplitude=11.73% ,acrophase=13 June(85.23) ,
p<0.000) .
Frequency of TB cases evaluated by sex in this model and found that there is seasonality by
sex too (p<0.000) , but different amplitudes found for female and male(13.35%, 10.5%) and
point estimate of acrophase for them were consequently 18 June and 8 June .
When we evaluate this pattern among smear positive and smear negative cases found that
smear positives have seasonal pattern (p<0.000) . Association of TB frequencies in quarters
and mean temperature of each quarter have been evaluated by ANOVA in different 4
temperature groups(p< 0.020) ,and a significant difference have been found between 10-20
and 20-30 temperature groups(p<0.051) .
According to this study there is a seasonal pattern in TB notification (incidence) in Iran which
should be notified in population based studies and surveys in this regards.
Comments:
We recommend performing more studies on patterns of pulmonary disease, other relevant
factors on TB involvement and also laboratory circulation to clarifying cause of existing
seasonality
Eisa Solgi, Raziyeh Yazdanyar , Mina Taghizadeh,
Volume 17, Issue 4 (3-2020)
Abstract
Background and Aim: Phytoremediation is a promising method for improving soils that can easily absorb heavy metals, resulting in decontamination of the soil. The objective of this study was to assess the phytoremediation potential of Alyssum maritimum in the remediation of lead-contaminated soil.
Materials and Methods: A randomized complete block design was used with five levels of lead (Pb) concentration (as lead nitrate) and Alyssum maritimum with six treatments in the research greenhouse of Malayer University, Malayer, Iran. After growth and flowering of the plant, lead concentration in its different organs was measured by atomic absorption spectrometry. The bioaccumulation factor (BCF) and the translocation factor (TF) were used to determine the potential of plant species selected for removing heavy metals from the soil in the environment.
Results: Analysis of the data showed that the highest accumulation of lead nitrate was in the leaf. It could be expected, then, that an increase in the concentration of Pb in the soil would result in the accumulation of Pb in the organs of Alyssum maritimum. Generally the degree of Pb accumulation in various plant organs followed the pattern: leaf > root > stem pattern. The BCF and TF indices of Alyssum maritimum species were greater than 1, which would indicate a high potential for transfer and accumulation of lead in the above-ground parts of the plant.
Conclusion: The selected plant species has, based on defined criteria for a heavy metal hyperaccumulator plant and its bioaccumulation factor and translocation factor values, a high potential for remediation of lead-contaminated soil and can be included in the group of hyperaccumulator plants.
