منابع مشابه
a brief history of zero
it is generally recognised that ‘zero’ as we understand the concept today originated in two geographically separated cultures: the maya and indian. however, if zero merely signified a magnitude or a direction separator (i.e. separating those above the zero level from those below the zero level), the egyptian zero, nfr, dating back at least four thousand years, amply served these purposes. if ze...
متن کاملBrief history of mycology in Iran
The history of mycology in Iran is presented in five periods. In the first period (until 1860) there is no sign of Iranian fungi in scientific literature. In the second period (1860–1941) the study of Iranian fungi was started by foreign mycologists who did not visit Iran but worked on plant material collected by botanists. In the third period (1941–1963) the study of Iranian fungi was started ...
متن کاملa brief history of human blood groups.
the evolution of human blood groups, without doubt, has a history as old as man himself. there are at least three hypotheses about the emergence and mutation of human blood groups. global distribution pattern of blood groups depends on various environmental factors, such as disease, climate, altitude, humidity etc. in this survey, the collection of main blood groups abo and rh, along with some ...
متن کاملthe pathology of historical texts translation: a study of persian translations of 7th volume of cambridge history of iran
ترجمه با گسترش زبان آغاز شده و اهمیت آن روز به روز افزایش می یابد، و برای اولین بار به عنوان شاخه ای از دانش و روشی برای انتقال علوم، فرهنگ و تجربه در در دوره قاجار در ایران آغاز شد. در حقیقت متون تاریخی از اولین متونی هستند که در ایران ترجمه شدند چرا که به سیاستمداران آن دوره کمک می کردند تا به علل موفقیت جهان غرب و پیشرفت هایشان در طول تاریخ پی ببرند، بنابراین به تدریج ترجمه این گونه متون رون...
15 صفحه اولbrief history of finance
this article is based on a study done by professor fred weston. in this article the evolution of financial management concepts is explained . the history of financial ideas is presented in eight sections as follows: 1- an overview of central ideas of finance 2- historical review of the impact of economic developments on the content of the finance field. 3- the emergence of selected areas of fin...
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ژورنال
عنوان ژورنال: Clinical Infectious Diseases
سال: 2012
ISSN: 1058-4838,1537-6591
DOI: 10.1093/cid/cis569