cadmium (cd), known as a non-essential heavy metal, can cause oxidative stress in plants. in this study, an attempt was carried out to find out whether cd-induced oxidative and microscopic changes could be observed in the early stage of seedling growth. seeds of brassica napus (cvs. zheda 619 and zs 758) were germinated in vitro at 0, 100, 200, 300, and 500 μm cd concentrations in dark for 48 h...

background: ionizing radiation induces the production of reactive oxygen species (ros), which play an important causative role in cell death. wholebody exposure of mice to gamma radiation leads to diminution of tissue antioxidant defense systems increases the peroxidative damage to membrane lipids and damages the haematopoietic and gastrointestinal systems. tempol (tpl), a cell membranepermeabl...

objective: crocin, the carotenoid isolated from saffron, has numerous medicinal properties which include anticancer and antioxidant activities. some antioxidants, such as carotenoids, can act as pro-oxidants at higher dosages and therefore induce tissue damage. in this situation antioxidant defense systems in the liver activate to prevent tissue damage. this study investigates the possible toxi...

Free radical can be defined as a molecule or molecular fragments containing unpaired electron in the outer orbital, which react with nearby molecules to get stability. There are two types of them in the body: oxygen free radicals and nitrogen free radicals. Our body has an antioxidant defense system which prevents accumulation of these radicals. There is a balance between free radical produc...

In this paper a novel method for detection of network attacks and malicious code is described. The method is based on main principles of Artificial Immune Systems where immune detectors have an Artificial Neural Network’s structure. The main goal of proposed approach is to detect unknown, previous unseen cyber attacks (malicious code, intrusion detection, etc.). The mechanism of evolution of th...

objective(s):one cause of cigarette smoking is oxidative stress that may alter the cellular antioxidant defense system, induce apoptosis in lung tissue, inflammation and damage in liver, lung, and kidney. it has been shown that chinese green tea (cgt) (lung chen tea) has higher antioxidant property than black tea. in this paper, we will explore the preventive effect of cgt on cigarette smoke-in...

various and complex human activities in geographical contexts need proper ground if at most efficiency is to be achieved. land preparation regulates the relationship between human, space, and human activities. land preparation has various dimensions related to value system, political, scientific, artistic, and defense-security aspects. one of the most important dimensions of land preparation is...