The Use of Sodium and Mercury Vapour Lamps in Ophthalmoscopy.

نویسنده

  • A J Ballantyne
چکیده

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

ارزیابی پرتوهای فرابنفش لامپ‌های کم‌مصرف از نوع فلورسنت فشرده

Iranians are replacing traditional incandescent lamps with Compact Fluorescent Lamps (CFLs), because they use about a quarter of the power of incandescent lamps and their lifecycle is up to ten times longer. Government encourages public to use CFLs too, for saving energy and reducing carbon dioxide emissions. Small amounts of mercury are used in CFLs, released to the environment if they are bro...

متن کامل

Dichroic Halogen Lamps - unsuitable as UV lighting for reptiles

Ordinary incandescent lamps (with a tungsten filament) produce no ultraviolet light. Recently a range of lamps which do emit significant and useful amounts of UV light have become available. Specialist fluorescent tubes, compact fluorescent lamps and mercury vapour lamps, all designed to emit UVA and UVB light in varying amounts, are now on sale worldwide. Over the last year, those of us writin...

متن کامل

Effects of mercury on embryonic development and larval growth of the sea urchin Echinometra mathaei from the Persian Gulf

This study investigated the effects of increasing mercury (Hg) concentration on early developmental stages of sea urchin, Echinomethra mathaei, as a bioindicator. The toxicity test was carried out after the gamete released induction and fertilization in six concentrations of mercury within the range of 4, 8, 16, 32, 64 and 128 µg/L. Embryos samples were incubated for 30 h in control and test so...

متن کامل

Mass photokeratitis following exposure to unprotected ultraviolet light.

We report a cluster of patients developing photokeratitis as a result of exposure to unprotected UV-B light source. The incident occurred at a cattle livestock market auction where the light source protective covers of mercury vapour lamps were damaged because of vandalism. The incident was investigated by the District Council as a public health and safety issue. This report stresses the hazard...

متن کامل

Graphene production: new solutions to a new problem.

528 nature nanotechnology | VOL 3 | SEPTEMBER 2008 | www.nature.com/naturenanotechnology Interestingly, the nano-selenium material captured five times more mercury than the maximum predicted on the basis of its surface area, indicating significant penetration of mercury into the nanoselenium matrix. This did not occur in the other sorbent materials. Even so, the amount of mercury sequestered wa...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • The British journal of ophthalmology

دوره 22 4  شماره 

صفحات  -

تاریخ انتشار 1938