in this paper mathematical structure of time-dependent lagrangian systems and their symmetries are extended and the explicit relation between constants of motion and infinitesimal symmetries of time-dependent lagrangian systems are considered. starting point is time-independent lagrangian systems ,then we extend mathematical concepts of these systems such as equivalent lagrangian systems to the...

a study was conducted to evaluate the effects of two laying systems (floor versus cage) on egg production, egg quality, and microbial safety. one hundred and eighty 42 wk old laying hens were separated into two groups of 90 hens each, and housed in laying cages and a floor laying system. eggs from the hens were collected for 2 weeks, and hen-day egg production, egg quality (whole egg, albumen, ...

health systems research aims to understand the governance of health systems (i.e. how health systems function and perform and how their actors interact with each other). this can be achieved by applying innovative methodologies and concepts that are going to capture the complexity and dynamics of health systems when they are affected by shocks. the capacity of health systems to adapt to shocks ...

saffron is one of the highly exotic spices known for traditional values and antiquity. it is used for home décor besides serving as a colorant flavor and is widely known for medicinal value. over the last few years, saffron has garnered a lot of interest due to its anti-cancer, anti-mutagenic, anti-oxidant and immunomodulatory properties. integration of systems biology approaches with wide appl...

this review presents a brief outline of our current knowledge of the structure and chemical composition of the outer membrane vesicles (omvs), originating from the surface of gram negative bacteria including their outer membrane proteins and lipopolysaccharides. moreover, the functional roles and applications of omvs in medical research such as omv-based vaccines, omv adjuvants properties, omv ...

this study aims to investigate the capability of forming itraconazole containing niosomes with span 60 and brij 58 as non-ionic surfactants. lower cost and higher stability makes niosomes a more suitable choice in comparison with liposomes.the capability to form vesicles as an itraconazole delivery system and the influence of different factors such as type of surfactant and molar ratio of chole...

the paper discusses the use of modern information technologies, and in particular geographic information systems (gis), in the management and control of major accident risk. for this purpose, the regulatory framework of the recent “seveso ii” directive is briefly described. the referencing in space of the phenomena may be defined in terms of a geometrically exact or a relative location. the for...

background: increasing hospital costs and its social and cultural problems has led to the idea of providing healthcare services at home. because of infrastructural and implementation problems, providing healthcare at home in iran has not been initiated yet. therefore, this study set out to elaborate the need for a comprehensive system in order to provide this service in iran. methods: all artic...