Edison's Phonograph, its History and Development

the survey of the virtual higher education in iran and the ways of its development and improvement

این پژوهش با هدف "بررسی وضعیت موجود آموزش عالی مجازی در ایران و راههای توسعه و ارتقای آن " و با روش توصیفی-تحلیلی و پیمایشی صورت پذیرفته است. بررسی اسنادو مدارک موجود در زمینه آموزش مجازی نشان داد تعداد دانشجویان و مقاطع تحصیلی و رشته محل های دوره های الکترونیکی چندان مطلوب نبوده و از نظر کیفی نیز وضعیت شاخص خدمات آموزشی اساتید و وضعیت شبکه اینترنت در محیط آموزش مجازی نامطلوب است.

Lippmann photography: its history and recent development

More than one hundred years ago Gabriel Lippmann recorded the first permanent colour photographs in France. His technique based on recorded light interference structures in an emulsion produced unique colour photographs. It is known as interferential photography or interference colour photography, as well as Lippmann photography. This type of direct colour photography was rather complicated, wh...

Fluoxetine: a case history of its discovery and preclinical development.

INTRODUCTION Depression is a multifactorial mood disorder with a high prevalence worldwide. Until now, treatments for depression have focused on the inhibition of monoaminergic reuptake sites, which augment the bioavailability of monoamines in the CNS. Advances in drug discovery have widened the therapeutic options with the synthesis of so-called selective serotonin reuptake inhibitors (SSRIs),...

The early history of veterinary literature and its British development

The European Resuscitation Council: its history and development.

This year, the European Resuscitation Council (ERC) celebrates ts25thanniversary. TheERCwascreatedbyasmall groupof friends nd has developed into a professional organisation with internaional recognition, dealing with all aspects of resuscitation care in urope. These 25 years have formed a substantial and exciting part f the professional lifetime of the present authors, who have had he privilege...