Announcing the ACSESS Digital Library!

The ACSESS Digital Library houses the full text of all journals, books, Annual Meeting presentations, magazines, and related publications and documents. This content is searchable via leading-edge software that provides the user with guided navigation; journal-, article-, and author-level metrics; and links to external sources. There are unique individual profile pages for each author to customize as he or she sees fit. Users have the opportunity to save their searches to a “virtual binder” and email those binders to students and/or colleagues. In addition, there will be significant third-party content, e.g., the journal and members” magazine of the American Society for Animal Science will be available in the Digital Library in January 2013.

see: https://www.soils.org/publications

Setiap tahun mereka meninggalkan desanya dan hidup sebagai satu kesatuan kelompok di daerah perladangan untuk 4 sampai 6 bulan sampai panen selesai. Begitulah cara pemanfaatan hutan dengan berladang berpindah-pindah: membuka sebagian sangat kecil hutan di lingkungan huniannya dan membakar hasil tebangan untuk mendapatkan abu sebagai pupuk. Jika kesuburan telah menurun, mereka berganti lahan untuk membiarkan yang lama mengalami proses pemulihan alami. Jika tak berladang di hutan seperti itu, orang Ribun bertanam padi di tanah paya (tanah becek, berlumpur). Hampir setiap keluarga Ribun mempunyai ladang dan tanah paya di tepi hutan.

Selengkapnya di:http://4archiculture.net/post/52#comment_370

A mineral is a naturally occurring solid chemical substance formed through biogeochemical processes, having characteristic chemical composition, highly ordered atomic structure, and specific physical properties. By comparison, a rock is an aggregate of minerals and/or mineraloids and does not have a specific chemical composition. Minerals range in composition from pure elements and simple salts to very complex silicates with thousands of known forms. The study of minerals is called mineralogy. (Wiki)

Database mineral visit here: http://webmineral.com

The Mineralogy Database was last updated on 12/31/2009 and it contains 4,714 individual mineral species descriptions with links and a comprehensive image library. Visit the “What’s New” section for details.  

Each mineral has a page linked to tables devoted to crystallography, crystal structures, X-Ray powder diffraction, chemical composition, physical and optical properties, Dana’s New classification, Strunz classification, mineral specimen images, and alphabetical listings of mineral species. There also are extensive links to other external sources of mineral data and information.