this research aims at studying challenges, difficulties and prospects of irans income distribution sector during 2005-2015 by means of an econometric model. the first part of the paper reviews some theories and empirical accomplishments regarding income distribution in national and international levels. the next part of the paper goes through the trends of income distribution and social welfare...

The algal excretion product geranylacetone was proved to be an effective and novel inhibitor of carotene synthesis in Synechoccus 6911. The application of geranylacetone resulted in an ac­ cumulation of phytofluene, indicating an inhibition of the conversion of this compound into fcarotene. The cts-isomer of geranylacetone was as effective as the natural irans-isomer. The chloro­ phyll synthesi...

in recent decades, urban planning has tended to humanist urbanism. in this regard foot travels and bicycle use are the two strategies that urban planners and transportation engineers are using them as adequate alternatives for making cities more people friendly. using bicycle is known as a strategy that has a great role in decreasing traffic among developing countries in recent decades. these c...

Studies on models synthesized by stereochemically controlled routes show that the central triene chromophore in the common cis isomer of phytoene has the irans,cis,trans configuration, and that the phytoene from Flavobacterium dehydrogenans consists mainly of the all-trans isomer. Capsorubin, with the natural configuration at all four chiral centres, has been synthesized from (+)-camphor. Sever...

s from the Energy Charter Protocol on Energy Efficiency and Related Environmental Aspects (PEEREA) Article 3 Basic Principles Contracting Parties shall be guided by the following principles: (1) Contracting Parties shall co-operate and, as appropriate, assist each other in developing and implementing energy efficiency policies, laws and regulations. (2) Contracting Parties shall establish energ...