Has accelerated greatly over the last two decades leading to many important scientificĪchievements and impressive technological advances. The potential to play a significant role in achieving these aims.Ĭrop biotechnologies have developed incrementally over the past century, but progress The various biotechnologies available have
Integrate considerations regarding adaptation, uncertainty, vulnerability and resilience intoĪgricultural research programmes and strategies. The implications of climate change make it necessary to Output in conjunction with conserving the natural resources base via improved cropsĪnd crop management systems. In developing countries, there is a need for continued focus on optimizing agricultural Reproductive strategies has important implications for finfish culture and broodstock That sink or stick to substrates, uncared eggs scattered into the environment to parentalĬare of eggs to live “birth” (ovoviviparity). Internal or external fertilization, a wide range of egg sizes, some that float and others Of puberty, from a few months to many years, fecundity, from a few to millions of eggs, Fish exhibit various types of sex determination, from genetic toĮnvironmental control, sex differentiation from hermaphroditism to gonochorism, age These environments have exerted evolutionary pressures that have resulted in theĮvolution of the enormous number of fishes and an immense variety of reproductive In temperature, salinity, oxygen, and other chemical and physical water properties. Fish inhabitĪlmost every aquatic environment on the planet, which present an enormous variation Out of approximately 50,000 vertebrate species (. S.A.įish are the largest phylum of living vertebrates, with around 30,000 fish species Tanggal 25 Oktober 1 963 di Winchester, Massachusets U. Lahir di Praha pada tanggal 2 Oktober 1 883 dan meninggal dunia pada
Karena jasanya memelopori pengembangan ilmu mekanika tanah.
Oleh karena itu, Terzaghi disebut sebagai Bapak mekanika tanah, Oleh proses penghancuran (disintegration) secara a/ami dan kimiawi batubatuan.
Pada tahun 1 948 Karl Von Terzaghi seorang sarjana teknik sipil Jerman/Īustria berpendapat bahwa : Mekanika tanah adalah pengetahuan yang menerapkan kaidah mekanika dan hidrolika untuk memecahkan persoalanpersoalan teknik sipil yang berhubungan dengan endapan dan kumpulanīutir-butir padat yang terurailtidak terpadu (uncosolidated) yang dihasilkan Rekayasa tanah, mekanika tanah atau geoteknik merupakan salah satu ilmu termuda perkembangannya dalam teknik Endapan alam tersebut mencakup semua bahan, dari tanah lempung (clay) Tetap menjadi ilmu tersendiri yaitu mekanika batuan (rock mechanics). Dalam ilmu mekanika tanah yang disebut “tanah “ialah semua endapanĪ/am yang berhubungan dengan teknik sipil, kecuali batuan tetap.
0 kommentar(er)
