Porphyrins molecules are gaining importance in the present era. Porphyrins are important part of biological molecules like hemoglobin and chlorophyll .Photo system 1 and photo system 2 is important sunlight trap in chloroplast. Electron transport chain is a series of chemical reaction in which energy is formed in the form of ATP (Adenosine triphosphate).The members of electron transport chains ...

for determination of so2 concentration and its variation due to time and location within tehran air-shed area, department of environmental health, school of public health installed two units of semiautomatic air sampler, in tehran university campus and ghazvin-square area. collected samples were analyzed according to hydrogen peroxide method and for each month arithmetic mean was calculated. th...

tax , as the most initial and most important public revenue , principally plays an important role in providing public expenses and for this purpose, it enjoys an extraordinarily higher place for all states in the world. in this way in tax laws that are currently enforced in all states including iran, special rights and powers have been granted to tax organization in order to allow it to carry o...

Composite Web services are built as workflows made up of component Web services. WS-BPEL has become the de facto standard used for the development of above mentioned workflows. Apart from introducing main streamlines related to SOA architectures and WS-BPEL language, the paper identifies some crucial issues that must be solved during composite Web service development: granularity aggregated ins...

In the short time since the Belle Collaboration reported sighting the “missing” charmonium state η c(2 S0) in exclusive B → KKSK π decays [1], new states associated with charmonium have appeared in great profusion. Apart from the long-sought hc(1 P1), recently observed by the CLEO Collaboration in the decay ψ(2S) → πhc → (γγ)(γηc) [2, 3], all the newly observed states lie near or above charm th...