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Search Results: 1 - 10 of 401276 matches for " M. Niazi-Ghazani "
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Brachial Plexus Blockade in Elbow, Arm or Hand Surgeries
M.T. Mortazavi,M. Niazi-Ghazani,M. Ansari
Pakistan Journal of Biological Sciences , 2009,
Abstract: This study was performed to compare the transarterial (T) and paraarterial (P) approaches for brachial plexus block, in terms of success rate, onset time and duration of analgesia and complications. Hundred patients scheduled for elbow, arm or hand surgery at Tabriz Shohada hospital from October 2005 to December 2006, randomly allocated into two groups (n = 50 per group), based on the approach chosen to block the brachial plexus. For local anesthesia each patient received 22.5 mL of 2% lidocaine with 17.5 mL distilled water (in total volume of 40 mL and total dose of 450 mg) and 1/200000 epinephrine with a standard 23 gauge needle. All patients were sedated with 1 μg kg-1 of fentanyl and 0.02-0.05 mg kg-1 of midazolam. There was no statistical difference between the groups in duration of analgesia but the onset of anesthesia was significantly quicker in paraarterial technique (3.5 vs. 13.4 min, p<0.001). Success rate was 86% in group T and 98% in group P (p = 0.03). Two percent of patients in group P and 6% in group T had total failure of the block and 8% of the group T required supplementary drug. Paraarterial method for axillary block is preferable due to quicker onset of blockade and higher success rate.
Changing Recovery Discharge Method in Elderly Undergoing Cataract Surgery by TIVA in Nikoukari Hospital, an Ophthalmic Center
M. Parish,M. Oveisi,M. Niazi Ghazani,F. Moslemi
Research Journal of Biological Sciences , 2008,
Abstract: While age increases, some procedures such as cataract are needed to be done as outpatient. Anesthesia should be such that the turn over of discharge is rapid. The objective of this study is to change recovery discharge method in elderly undergoing cataract surgery by TIVA in our hospital. Nightly patients in 2 groups more than 65 years old and ASA physical status II, III were studied. The induction of anesthesia performed with bolus dose of remifentanil 1 μg kg-1 and propofol 2 mg kg-1 and the intubation was done after cisatracorium 0.15 mg kg-1. In group μg/kg/min were infused. In group 2, a mixture of N2O+O2 50% each and isoflurane 1.5% were given to the patients. The criteria to be discharged from recovery were recorded in 2 groups. The age and gender were equal in both groups. Some data like duration of the surgery, return of breathing and the extubation time made no difference in both groups. From the end of surgery to the time of discharge from recovery all data such as eye opening, stating name and the time of ability to discharge had significant differences between 2 groups (p<0.0005). Total 15 patients in TIVA group and 22 in group isoflurane received ephedrine. The results of this study show that the time of recovery discharge in TIVA group using remifentanil and propofol is more rapid than isoflurane. This could result to a better turn over in the operating rooms.
Changing Recovery Discharge Method in Elderly Undergoing Cataract Surgery by TIVA in Nikoukari Hospital, an Ophthalmic Center
M. Parish,M. Oveisi,M. Niazi Ghazani,F. Moslemi,S. Rasooli
Research Journal of Biological Sciences , 2012,
Abstract: While age increases, some procedures such as cataract are needed to be done as outpatient. Anesthesia should be such that the turn over of discharge is rapid. The objective of this study is to change recovery discharge method in elderly undergoing cataract surgery by TIVA in our hospital. Nightly patients in 2 groups more than 65 years old and ASA physical status II, III were studied. The induction of anesthesia performed with bolus dose of remifentanil 1 g kg 1 and propofol 2 mg kg 1 and the intubation was done after cisatracorium 0.15 mg kg 1. In group 1, for maintenance of anesthesia remifentanil 0.05 g/kg/min and propofol 60-100 g/kg/min were infused. In group 2, a mixture of N2O+O2 50% each and isoflurane 1.5% were given to the patients. The criteria to be discharged from recovery were recorded in 2 groups. The age and gender were equal in both groups. Some data like duration of the surgery, return of breathing and the extubation time made no difference in both groups. From the end of surgery to the time of discharge from recovery all data such as eye opening, stating name and the time of ability to discharge had significant differences between 2 groups (p<0.0005). Total 15 patients in TIVA group and 22 in group isoflurane received ephedrine. The results of this study show that the time of recovery discharge in TIVA group using remifentanil and propofol is more rapid than isoflurane. This could result to a better turn over in the operating rooms.
Quasi-linear functionals determined by weak-2-local $^*$-derivations on $B(H)$
Mohsen Niazi,Antonio M. Peralta
Mathematics , 2015,
Abstract: We prove that, for every separable complex Hilbert space $H$, every weak-2-local $^*$-derivation on $B(H)$ is a linear $^*$-derivation. We also establish that every (non-necessarily linear nor continuous) weak-2-local derivation on a finite dimensional C$^*$-algebra is a linear derivation.
Weak 2-local derivations on $\mathbb{M}_n$
Mohsen Niazi,Antonio M. Peralta
Mathematics , 2015,
Abstract: We introduce the notion of weak-2-local derivation (respectively, $^*$-derivation) on a C$^*$-algebra $A$ as a (non-necessarily linear) map $\Delta : A\to A$ satisfying that for every $a,b\in A$ and $\phi\in A^*$ there exists a derivation (respectively, a $^*$-derivation) $D_{a,b,\phi}: A\to A$, depending on $a$, $b$ and $\phi$, such that $\phi \Delta (a) = \phi D_{a,b,\phi} (a)$ and $\phi \Delta (b) = \phi D_{a,b,\phi} (b)$. We prove that every weak-2-local $^*$-derivation on $M_n$ is a linear derivation. We also show that the same conclusion remains true for weak-2-local $^*$-derivations on finite dimensional C$^*$-algebras.
Finite Element Study on the Development of Damage and Flow Characteristics in Al7075 Alloy during Ex-ECAP  [PDF]
Mehdi Shaban Ghazani, Beitallah Eghbali
Modeling and Numerical Simulation of Material Science (MNSMS) , 2013, DOI: 10.4236/mnsms.2013.31004
Abstract: In the present study, 3D-finite element method was conducted to investigate the deformation characteristics of Al7075 alloy during integrated extrusion-equal channel angular pressing. Effective strain, strain rate, mean stress, and damage distributions were evaluated. Severe cracking was observed at Al7075 sample after extrusion-equal channel angular pressing. Finite element results show that cracking is due to the positive mean stress and damage accumulation at the top surface of sample.
Finite Element Analysis of the Groove Pressing of Aluminum Alloy  [PDF]
Mehdi Shaban Ghazani, Akbar Vajd
Modeling and Numerical Simulation of Material Science (MNSMS) , 2014, DOI: 10.4236/mnsms.2014.41006
Abstract:
In this paper, the finite element method was applied to analyze the deformation behavior of Al-1%Mg alloy during constrained groove pressing (CGP). Deformation inhomogeneity was studied in term of plastic strain distribution during deformation. It was found that after first pressing and flattening steps, the plastic strain is inhomogeneous but second pressing and flattening improve deformation distribution considerably. Also the regions between flat and inclined parts of sample receive less shear strain and consequently after four passes the deformation distribution is still inhomogeneous and doesn’t improve remarkably with more deformation steps.
The Response of Fodderbeet to Salinity: An Analysis of Physiological and Morphological Aspects of Growth
Banaras H. Niazi,Jelte Rozema,M. Salim
Pakistan Journal of Biological Sciences , 1999,
Abstract: Greenhouse studies on fodderbeet cultivars Beta vulgaris (cvs. Majoral, Monored, and Polygroeningia) and of Beta maritima (Seabeet) showed significant differences for Relative Growth Rate (RGR) among themselves while no significant differences were observed for salinity treatments until the first harvest. Plants had adapted themselves to salinity after six weeks of treatment and showed significant differences in RGR and Net Assimilation Rate (NAR) during the whole period of growth. Leaf thickness did not change significantly with salinity. B. vulgaris cv. Majoral and B. maritima were found to be better adapted 150 mM NaCl concentration in soil solution than cv. Monored and Polygroeningia under greenhouse conditions.
Isolation of a Cold-Responsive Gene (Wcor14) Encoding a Chloroplast-Targeted Protein from Aegilops tauschii
E. Valiellahi,A. Niazi,M. Farsi
Biotechnology , 2009,
Abstract: To determine the genetic nature of these mechanisms, several cold-responsive genes were identified. Wcor14, a member of the wheat cold-responsive (Cor) gene family, in this study has been isolated and characterized from ancient wheat ancestor Aegilops tauschii. The deduced polypeptide Aegilops tauschii WCOR14 is a hydrophobic polypeptide with 140 amino acids (MW = 13.5 kDa) showed high homology to the previously identified wheat and barley COR proteins. Analyses of the cDNA and genomic DNA sequences in this study suggested that, Aegilops tauschii Wcor14 and its related sequences constitute a small multigene family with different intron sizes. The transcripts Analyses of Wcor14 suggested that Wcor14 transcripts were up-regulated within 3-6 h of cold acclimation at 4°C. We used SCRATCH server for protein structure prediction.
Semiquantitative RT-PCR Analysis to Assess the Expression Levels of Wcor14 Transcripts in Winter-Type Wheat
E. Valiellahi,A. Niazi,M. Farsi
Biotechnology , 2009,
Abstract: The objective of this study was to determine the quantitative expression of COR gene (Wcor14) in different cold treatment in Iranian winter-type wheat, using semiquantitative RT-PCR analysis. Semiquantitative RT-PCR analysis showed that Wcor14 specifically induced by low temperature. The transcripts of Wcor14 were up-regulated within 3-6 h of cold acclimation at 4°C.
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