A new method is presented to optimally design analog RF circuits such as oscillators using Hopfie... more A new method is presented to optimally design analog RF circuits such as oscillators using Hopfield Neural Networks (HNN). For this purpose, an HNN is trained with some sample realization of a specific structure of an analog circuit. Then, considering random initial points, the related HNN converges to spurious local minima of energy function which may be associated with an optimum design of the analog circuit. To demonstrate this idea in practice, a 2.4 GHz fixed-frequency oscillator is considered. The associated design parameters of the oscillator are trained in the weights of an HNN. Starting from random initialization, the HNN provides some design realizations at the convergence state (associated spurious local minima). Some of these design realizations show a better performance in terms of phase noise, power consumption and harmonic distortions.
Background: One of the venomous fishes of Persian Gulf is a type of stonefish called blackfin sto... more Background: One of the venomous fishes of Persian Gulf is a type of stonefish called blackfin stonefish (Pseudosynanceia melanostigma) that is very poorly-known. This fish lives on the muddy bottoms of marine shallow waters and have venomous spines on its stone like body. The envenomation usually is happened by unwanted contact of human body to its body and the proteinic venom is injected into the skin. Upon the venom entrance to the body various symptoms and signs will occur that their intensity depends on the venom amount.The aim of study is the understanding of some pharmacological impacts of blackfin stonefish for future studies. Material and Methods: A total of 18 male laboratory rats were divided into three groups of control, second and third and envenomed by sub lethal doses (1/3 LD50 and ½ LD50) intravenously and the serum enzymes namely Creatine Phosphokinase, Lactate Dehydrogenase, Glutamate-Oxaloacetate Transaminase, Gamma-Glutamyl Transpeptidase , Alkaline Phosphatase an...
Background: Turbotoxins are marine secondary metabolites that produce in Turbinidae family and we... more Background: Turbotoxins are marine secondary metabolites that produce in Turbinidae family and were isolated from Japanese Turbo marmorata for the first time. A few research has been done on these metabolites so far. Another species, Turbo coronatus exists in Iran. The main aim of the current project was to investigate some biological effects of the crude extract of Turbo coronatus from the Persian Gulf . Materials and methods: In this study, 18 rats were selected in three groups including the control group. The experimental groups received ½ and 1/3 lethal doses intravenously and serum levels of liver and muscle enzymes, electrolytes and complete blood counts (CBC) were measured after 24 hours. Results: The levels of liver and muscle enzymes, amylase, sodium, potassium, calcium, phosphorus, ferrous, haptoglobin, albumin and creatinine were significantly increased in experimental group compared with the control group by injection of crude extract of Turbo coronatus; however, hemoglobin, mean corpuscular volume (MCV), red blood cell count, magnesium, and glucose levels were significantly decreased in the experimental group compared with the control group. Conclusions: Intravenous injection of ½ and 1/3 lethal doses of the crude extract of Turbo coronatus to rats produced rhabdomyolysis and hepatocytes injury. In addition, the crude extract injection acted as a haematoxin and decreased hemoglobin and MCV. Key words: Turbo coronatus, Hemolysis, Rhabdomyolysis, Hepatotoxicity, Persian Gulf
A new method is presented to optimally design analog RF circuits such as oscillators using Hopfie... more A new method is presented to optimally design analog RF circuits such as oscillators using Hopfield Neural Networks (HNN). For this purpose, an HNN is trained with some sample realization of a specific structure of an analog circuit. Then, considering random initial points, the related HNN converges to spurious local minima of energy function which may be associated with an optimum design of the analog circuit. To demonstrate this idea in practice, a 2.4 GHz fixed-frequency oscillator is considered. The associated design parameters of the oscillator are trained in the weights of an HNN. Starting from random initialization, the HNN provides some design realizations at the convergence state (associated spurious local minima). Some of these design realizations show a better performance in terms of phase noise, power consumption and harmonic distortions.
Background: One of the venomous fishes of Persian Gulf is a type of stonefish called blackfin sto... more Background: One of the venomous fishes of Persian Gulf is a type of stonefish called blackfin stonefish (Pseudosynanceia melanostigma) that is very poorly-known. This fish lives on the muddy bottoms of marine shallow waters and have venomous spines on its stone like body. The envenomation usually is happened by unwanted contact of human body to its body and the proteinic venom is injected into the skin. Upon the venom entrance to the body various symptoms and signs will occur that their intensity depends on the venom amount.The aim of study is the understanding of some pharmacological impacts of blackfin stonefish for future studies. Material and Methods: A total of 18 male laboratory rats were divided into three groups of control, second and third and envenomed by sub lethal doses (1/3 LD50 and ½ LD50) intravenously and the serum enzymes namely Creatine Phosphokinase, Lactate Dehydrogenase, Glutamate-Oxaloacetate Transaminase, Gamma-Glutamyl Transpeptidase , Alkaline Phosphatase an...
Background: Turbotoxins are marine secondary metabolites that produce in Turbinidae family and we... more Background: Turbotoxins are marine secondary metabolites that produce in Turbinidae family and were isolated from Japanese Turbo marmorata for the first time. A few research has been done on these metabolites so far. Another species, Turbo coronatus exists in Iran. The main aim of the current project was to investigate some biological effects of the crude extract of Turbo coronatus from the Persian Gulf . Materials and methods: In this study, 18 rats were selected in three groups including the control group. The experimental groups received ½ and 1/3 lethal doses intravenously and serum levels of liver and muscle enzymes, electrolytes and complete blood counts (CBC) were measured after 24 hours. Results: The levels of liver and muscle enzymes, amylase, sodium, potassium, calcium, phosphorus, ferrous, haptoglobin, albumin and creatinine were significantly increased in experimental group compared with the control group by injection of crude extract of Turbo coronatus; however, hemoglobin, mean corpuscular volume (MCV), red blood cell count, magnesium, and glucose levels were significantly decreased in the experimental group compared with the control group. Conclusions: Intravenous injection of ½ and 1/3 lethal doses of the crude extract of Turbo coronatus to rats produced rhabdomyolysis and hepatocytes injury. In addition, the crude extract injection acted as a haematoxin and decreased hemoglobin and MCV. Key words: Turbo coronatus, Hemolysis, Rhabdomyolysis, Hepatotoxicity, Persian Gulf
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Papers by Amir Vaziri
Materials and methods: In this study, 18 rats were selected in three groups including the control group. The experimental groups received ½ and 1/3 lethal doses intravenously and serum levels of liver and muscle enzymes, electrolytes and complete blood counts (CBC) were measured after 24 hours.
Results: The levels of liver and muscle enzymes, amylase, sodium, potassium, calcium, phosphorus, ferrous, haptoglobin, albumin and creatinine were significantly increased in experimental group compared with the control group by injection of crude extract of Turbo coronatus; however, hemoglobin, mean corpuscular volume (MCV), red blood cell count, magnesium, and glucose levels were significantly decreased in the experimental group compared with the control group.
Conclusions: Intravenous injection of ½ and 1/3 lethal doses of the crude extract of Turbo coronatus to rats produced rhabdomyolysis and hepatocytes injury. In addition, the crude extract injection acted as a haematoxin and decreased hemoglobin and MCV.
Key words: Turbo coronatus, Hemolysis, Rhabdomyolysis, Hepatotoxicity, Persian Gulf
Materials and methods: In this study, 18 rats were selected in three groups including the control group. The experimental groups received ½ and 1/3 lethal doses intravenously and serum levels of liver and muscle enzymes, electrolytes and complete blood counts (CBC) were measured after 24 hours.
Results: The levels of liver and muscle enzymes, amylase, sodium, potassium, calcium, phosphorus, ferrous, haptoglobin, albumin and creatinine were significantly increased in experimental group compared with the control group by injection of crude extract of Turbo coronatus; however, hemoglobin, mean corpuscular volume (MCV), red blood cell count, magnesium, and glucose levels were significantly decreased in the experimental group compared with the control group.
Conclusions: Intravenous injection of ½ and 1/3 lethal doses of the crude extract of Turbo coronatus to rats produced rhabdomyolysis and hepatocytes injury. In addition, the crude extract injection acted as a haematoxin and decreased hemoglobin and MCV.
Key words: Turbo coronatus, Hemolysis, Rhabdomyolysis, Hepatotoxicity, Persian Gulf