Effects of Monochromatic Ultraviolet Rays on Yeast Cells

Advantages of Monochromatic X-rays for Imaging

The contrast of X-ray imaging depends on the radiation energy and acquires its maximum value at a certain optimum energy typical for the object under investigation. Usually, higher energies result in reduced contrast, lower energies are absorbed in the object thus having a smaller probability of reaching the detector. Therefore, broad X-ray spectra contain non-optimal quanta to a large extent a...

the effects of error correction methods on pronunciation accuracy

هدف از انجام این تحقیق مشخص کردن موثرترین متد اصلاح خطا بر روی دقت آهنگ و تاکید تلفظ کلمه در زبان انگلیسی بود. این تحقیق با پیاده کردن چهار متد ارائه اصلاح خطا در چهار گروه، سه گروه آزمایشی و یک گروه تحت کنترل، انجام شد که گروه های فوق الذکر شامل دانشجویان سطح بالای متوسط کتاب اول passages بودند. گروه اول شامل 15، دوم 14، سوم 15 و آخرین 16 دانشجو بودند. دوره مربوطه به مدت 10 هفته ادامه یافت و د...

Medical Uses of Monochromatic X-rays

At a time in which medical costs are straining the economic welfare of our country, do we need another new technology to diagnose and treat diseases? To answer that question we must explore any shortcomings of our present system and assess the benefits that we might hope to derive from the costs of another layer of expensive technology. If our longevity and quality of life can be significantly ...

The effect of ultraviolet light on living yeast cells.

Monochromatic Ultraviolet Microscopy of Microorganisms: Preliminary Observations on Bacterial Spores

An ultraviolet source may be used in light mi-croscopy to excite visible fluorescence, increase resolution, or differentiate absorbing materials. The last two aims require ultraviolet-transmitting optics, usually of quartz, and have infrequently been sought by bacteriologists, especially since electron microscopy with its vastly increased resolving power became available. However, ultraviolet l...