Hasil Pencarian  ::  Simpan CSV :: Kembali

"This book traces the development of life's defense systems-the mechanisms that transform, excrete, and stow away potentially harmful chemicals-from more than three billion years ago to today."

"Genesis – in the beginning deals with the origin and diversity of Life and early biological evolution and discusses the question of where (hot or cold sources) and when the beginning of Life took place. Among the sections are chapters dealing with prebiotic chemical processes and considering self-replication of polymers in mineral habitats. One chapter is dedicated to the photobiological regime on early Earth and the emergence of Life. This volume covers the role of symmetry, information and order (homochrial biomolecules) in the beginning of Life. The models of protocells and the genetic code with gene transfer are important topics in this volume. Three chapters discuss the panspermia hypothesis (to answer “are we from outer space?”). Other chapters cover the astrobiological aspects of life in the Universe in extraterrestrial planets of the solar system and deal with cometary hydrosphere (and its connection to earth). Conclude with the history and frontiers of Astrobiogy."

" Islam memahami konsep kehidupan bermoral dalam rangka olah jiwa demi memenuhi syarat menjadi dekat dengan Tuhan, yang transenden. Untuk itu, alih-alih memahami realisasi-diri seseorang sebagai alasan untuk mewujudkan atau selaras dengan hasrat dirinya, sebagaimana telah umum diterima di dunia modern, Islam memandang realisasi diri sebagai hasil dari upaya kontrol diri, dengan mengatasi hasrat aktual dan meningkatkan kehendaknya dalam mewujudkan keselarasan antara aspek psikis (jiwa) --mencakup aktivitas emosional (hati) dan teoritis (nalar) dan aspek fisik (raga)-- berupa tindakan praktis (aksi). Kondisi yang diperlukan bagi kedua aspek tersebut terumuskan dalam istilah “iman” dan “amal saleh.”"

"This book deals with the chemical evolution of galaxies of all morphological types (ellipticals, spirals and irregulars) and stresses the importance of the star formation histories in determining the properties of stellar populations in different galaxies. The topic is approached in a didactical and logical manner via galaxy evolution models which are compared with observational results obtained in the last two decades: The reader is given an introduction to the concept of chemical abundances and learns about the main stellar populations in our Galaxy as well as about the classification of galaxy types and their main observables. In the core of the book, the construction and solution of chemical evolution models are discussed in detail, followed by descriptions and interpretations of observations of the chemical evolution of the Milky Way, spheroidal galaxies, irregular galaxies and of cosmic chemical evolution."