منابع مشابه
Formamide and the origin of life.
The complexity of life boils down to the definition: "self-sustained chemical system capable of undergoing Darwinian evolution" (Joyce, 1994) [1]. The term "self-sustained" implies a set of chemical reactions capable of harnessing energy from the environment, using it to carry out programmed anabolic and catabolic functions. We briefly present our opinion on the general validity of this definit...
متن کاملThermodynamics, formamide, and the origin of life: Comment on "Formamide and the origin of life" by R. Saladino et al.
“There is something rather than nothing because something is more stable”, wrote Victor Stenger about the universe [1]. The same applies to the origin of life; but what sort of something, and where? Thermodynamics and life itself are the surest guides. Thermodynamics, because life is more stable than non-life only under certain farfrom-equilibrium conditions. Life, because the best explanation ...
متن کامل“the effect of risk aversion on the demand for life insurance: the case of iranian life insurance market”
abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...
15 صفحه اولA "warm formamide" scenario for the origins of life might not be so hot: Comment on "Formamide and the origin of life" by E. Di Mauro et al.
In this review, Saladino et al. present an intriguing hypothesis surrounding the role of formamide in the origins of life on Earth, backed by experimental results supporting each step from formamide to RNA polymers [1]. The overall premise is that, from formamide and inorganic phosphate, RNA molecules over 100 nucleotides in length can be produced. In addition, many carboxylic acids likely rele...
متن کاملthis study investigated the relationship between quality of work life and organization citizenship behavior from the viewpoint of teachers in high schools in tehran city.
چکیده هدف از پژوهش حاضر بررسی رابطه کیفیت زندگی کاری و رفتار شهروندی سازمانی در مدارس مقطع متوسطه پسرانه شهر تهران از دیدگاه دبیران بود. روش پژوهش حاضر توصیفی و از نوع همبستگی بود. از بین دبیران مدارس شهر تهران تعداد 380 نفر به روش نمونه گیری خوشه ای چند مرحله ای به عنوان نمونه پژوهش انتخاب شدند و با تکمیل پرسشنامه ی کیفیت زندگی کاری والتون(1975) و پرسشنامه ی رفتار شهروندی سازمانی پودساکو...
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ژورنال
عنوان ژورنال: Physics of Life Reviews
سال: 2012
ISSN: 1571-0645
DOI: 10.1016/j.plrev.2011.12.002