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Shirani, Kobra,Bostan, Hassan Badie,Baroti, Ashkan,Hassanzadeh, Mohammad,Khashyarmanesh, Zahra,Haghighi, Hamideh Moalemzadeh,Karimi, Gholamreza KOREAN PHARMACOPUNCTURE INSTITUTE 2018 Journal of pharmacopuncture Vol.21 No.3
Objectives: Ma-al-shaeer is a popular beverage in Islamic countries. The aim of this study was to determine the concentrations of methanol and ethanol in most consumed brands of Ma-al-shaeer in Iran. Methods: Eighty-one Ma-al-shaeer samples which commonly used in Iran were provided. Methanol and ethanol contents were determined by gas chromatography with flame ionization detector. Results: The mean methanol concentrations in Iranian and foreign brands was $129.84{\pm}205.38mg/L$ and $110.157{\pm}135.98mg/L$, respectively. Although mean ethanol contents of Iranian brands was $1.2{\pm}2.41mg/L$, ethanol level in foreign ones was lower than LOQ. Conclusion: Since the most Ma-al-shaeer brands had methanol pollution at different levels establishment of a definitive relationship between the methanol content and toxicological effects seem to be vital. EDI of methanol for Iranian people through consumption of Maal-shaeer was determined 0.023mg/kg bw/day.
Siamak Shirani Bidabadi,Maziah Mahmood,Sariah Meon,Zakaria Wahab,Cyrus Ghobadi 한국작물학회 2011 Journal of crop science and biotechnology Vol.14 No.4
Water stress is a serious environmental restriction to banana productivity. Hence, the objective of this study was to employ in vitro mutagenesis in selection and characterization of drought tolerant lines in banana. In vitro culture responses of ethyl methanesulphonate induced variants of banana cultivars, ‘Berangan Intan’ and ‘Berangan’ were assessed concerning morphological, physiological and molecular characteristics involving mutated shoot tips on MS medium supplemented with 30 g L_(-1) PEG. The results showed that water stress tolerant lines could be obtained from induced variations. Variants L_(2-5) and L_(1-5) showed the highest number of leaves per shoot (2.37 and 2.06, respectively) and the lowest were recorded in the parental lines L_(1-1) and L_(2-1) (0.81 and 0.93, respectively). Fresh weight and shoot vigor rate indicated the maximum increase in the water stress tolerant lines compared with susceptible and non-mutated parental lines. L_(2-5) exhibited the most increase in the chlorophyll and the most reduction in H₂O₂ and MDA contents when exposed to water stress. Under PEG treatment, proline and relative water content was enhanced in L_(1-5), L_(2-5), L_(2-6), L_(1-6) L_(2-3), L_(2-4), and L_(1-4). RAPD analysis revealed polymorphism (18.35 and 21.48%) among variants derived from ‘Berangan Intan’ and ‘Berangan’,respectively. The amplified fragments generated by primers opc01, opc04, opa11, and opa20 observed to be specific for L_(2-5) and L_(1-5) as more tolerant followed by L_(2-3), L_(1-4), L_(2-6), and L_(1-6) as moderately tolerant lines against water stress. This study demonstrates the application of in vitro mutagenesis in selection of water stress tolerant lines of banana as a convenient, cheap, and rapid technique.
Kobra Shirani,Hassan Badie Bostan,Ashkan Baroti,Mohammad Hassanzadeh,Zahra Khashyarmanesh,Hamideh Moalemzadeh Haghighi,Gholamreza Karimi 대한약침학회 2018 Journal of pharmacopuncture Vol.21 No.3
Objectives: Ma-al-shaeer is a popular beverage in Islamic countries. The aim of this study was to determine the concentrations of methanol and ethanol in most consumed brands of Ma-al-shaeer in Iran. Methods: Eighty-one Ma-al-shaeer samples which commonly used in Iran were provided. Methanol and ethanol contents were determined by gas chromatography with flame ionization detector. Results: The mean methanol concentrations in Iranian and foreign brands was 129.84±205.38 mg/L and 110.157±135.98 mg/L, respectively. Although mean ethanol contents of Iranian brands was 1.2±2.41 mg/L, ethanol level in foreign ones was lower than LOQ. Conclusion: Since the most Ma-al-shaeer brands had methanol pollution at different levels establishment of a definitive relationship between the methanol content and toxicological effects seem to be vital. EDI of methanol for Iranian people through consumption of Ma-al-shaeer was determined 0.023mg/kg bw/day.
Siamak Shirani Bidabadi,Hamidreza Mehri,Cyrus Ghobadi,Bahram Baninasab,Marzieh Afazel 한국작물학회 2013 Journal of crop science and biotechnology Vol.16 No.4
The role of exogenously applied Methyl jasmonate (MeJA) in morphological responses, photochemical efficiency, changesof malondialdehyde content, and the activities of some antioxidant enzymes were investigated in four Iranian grapevine cultivars. MeJA improved morphological traits containing dry and fresh weight, node number, and shoot length. MeJA induced anoxidative stress, as shown by an increase in lipid peroxidation. Activities of catalase, peroxidase, and ascorbate peroxidasewere higher in MeJA-treated grapevines than in controls while the relative water content and leaf water loss of grapevine cultivarsdemonstrated a non-significant difference between the control and varying levels of MeJA. MeJA was positively affectedin recovery of the leaf chlorophyll fluorescence (photochemical efficiency) of grapevine cultivars, although the mean prolinecontent of MeJA-treated grapevines indicated a significant decrease when compared with those of the controls. These resultssuggest that MeJA could act as an intervener in grapevine responses by the enhancing the activity of antioxidants and recoveryof photochemical efficiency, leading to enhanced grapevine performance
Bidabadi, Siamak Shirani,Mahmood, Maziah,Meon, Sariah,Wahab, Zakaria,Ghobadi, Cyrus 한국작물학회 2011 Journal of crop science and biotechnology Vol.14 No.4
Water stress is a serious environmental restriction to banana productivity. Hence, the objective of this study was to employ in vitro mutagenesis in selection and characterization of drought tolerant lines in banana. In vitro culture responses of ethyl methanesulphonate induced variants of banana cultivars, 'Berangan Intan' and 'Berangan' were assessed concerning morphological, physiological and molecular characteristics involving mutated shoot tips on MS medium supplemented with 30 g $L^{-1}$ PEG. The results showed that water stress tolerant lines could be obtained from induced variations. Variants $L_{2-5}$ and $L_{1-5}$ showed the highest number of leaves per shoot (2.37 and 2.06, respectively) and the lowest were recorded in the parental lines $L_{1-1}$ and $L_{2-1}$ (0.81 and 0.93, respectively). Fresh weight and shoot vigor rate indicated the maximum increase in the water stress tolerant lines compared with susceptible and non-mutated parental lines. $L_{2-5}$ exhibited the most increase in the chlorophyll and the most reduction in $H_2O_2$ and MDA contents when exposed to water stress. Under PEG treatment, proline and relative water content was enhanced in $L_{1-5}$, $L_{2-5}$, $L_{2-6}$, $L_{1-6}$, $L_{2-3}$, $L_{2-4}$, and $L_{1-4}$. RAPD analysis revealed polymorphism (18.35 and 21.48%) among variants derived from 'Berangan Intan' and 'Berangan', respectively. The amplified fragments generated by primers opc01, opc04, opa11, and opa20 observed to be specific for $L_{2-5}$ and $L_{1-5}$ as more tolerant followed by $L_{2-3}$, $L_{1-4}$, $L_{2-6}$, and $L_{1-6}$ as moderately tolerant lines against water stress. This study demonstrates the application of in vitro mutagenesis in selection of water stress tolerant lines of banana as a convenient, cheap, and rapid technique.
Bidabadi, Siamak Shirani,Mehri, Hamidreza,Ghobadi, Cyrus,Baninasab, Bahram,Afazel, Marzieh 한국작물학회 2013 Journal of crop science and biotechnology Vol.16 No.4
The role of exogenously applied Methyl jasmonate (MeJA) in morphological responses, photochemical efficiency, changes of malondialdehyde content, and the activities of some antioxidant enzymes were investigated in four Iranian grapevine cultivars. MeJA improved morphological traits containing dry and fresh weight, node number, and shoot length. MeJA induced an oxidative stress, as shown by an increase in lipid peroxidation. Activities of catalase, peroxidase, and ascorbate peroxidase were higher in MeJA-treated grapevines than in controls while the relative water content and leaf water loss of grapevine cultivars demonstrated a non-significant difference between the control and varying levels of MeJA. MeJA was positively affected in recovery of the leaf chlorophyll fluorescence (photochemical efficiency) of grapevine cultivars, although the mean proline content of MeJA-treated grapevines indicated a significant decrease when compared with those of the controls. These results suggest that MeJA could act as an intervener in grapevine responses by the enhancing the activity of antioxidants and recovery of photochemical efficiency, leading to enhanced grapevine performance.
Comparative study of abutment screw loosening with or without adhesive material
Arshad, Mahnaz,Shirani, Gholamreza,Refoua, Sina,Yeganeh, Mohammadreza Rahimi The Korean Academy of Prosthodonitics 2017 The Journal of Advanced Prosthodontics Vol.9 No.2
PURPOSE. The purpose of this study was to achieve more retention and stability and to delay or prevent screw loosening. MATERIALS AND METHODS. Twenty implants (Implantium 3.4 mm, Dentium, Seoul, Korea) were divided into 2 groups (n = 20). In the first group, an adhesive material was applied around the screw of the abutments (test group). In the second group, the screws are soaked in saliva (control group). All the screws were torqued under 30 N/cm, Then, the samples were gone through a cyclic fatigue loading process. After cyclic loading, we detorqued screws and calculated detorque value. RESULTS. In comparison with the control group, all the implant screws in the test group were smeared with the adhesive material, showing significant higher detorque value. CONCLUSION. There are significantly higher detorque values in the group with adhesive. It is recommended to make biocompatible adhesive to reduce screw loosening.
Eydan, Anna,Shirani, Babak,Sadeghi, Yahya,Asgarian, Mohammad Ali,Noori, Ehsanollah Korean Nuclear Society 2020 Nuclear Engineering and Technology Vol.52 No.11
To understand the fundamental parameters of Alvand tokamak, A Rogowski coil with an active integrator was designed and constructed. Considering the characteristics of the Alvand tokamak, the structural and electrical parameters affecting the sensor function, were designed. Calibration was performed directly in the presence of plasma. The sensor has a high resistance against interference of external magnetic fields. Plasma current was measured in various experiments. Based on the plasma current profile and loop voltage signal, the time evolution of plasma discharge was investigated and plasma behavior was analyzed. Alvand tokamak discharge was divided into several regions that represents different physical phenomena in the plasma. During the plasma discharge time, plasma had significant changes and its characteristic was not uniform. To understand the plasma behavior in each of the phases, the Rogowski sensor should have sufficient time resolution. The Rogowski sensor with a frequency up to 15 kHz was appropriate for this purpose.