1. 18 JULY - 24 JULY A.
SLIDESHARE URL FOR
ARTICLE # 2

2. I AM GOING TO TALK ABOUT....
Hi, I am Motohito Yoshida (s1180202). I am grad to meet
you.
Now I am going to talk about RADIATION EFFECTS ON
HUMANS on the website. My English is poor but I try to
explain in English, so I would like you to try to read it,
please.

3. HOW MANY KIND OF RADIATION?
There are too many different types to count them. The non-
ionizing portion of electromagnetic radiation consists of
electromagnetic waves that are not energetic enough to detach
electrons from atoms or molecules, ionizing them. These
include radio waves, microwaves, infrared, and (sometimes)
visible light. (Ultraviolet light, X-rays and gamma-rays are
regarded as ionizing.) The occurrence of ionization depends on
the energy of the individual particles or waves, and not on their
number. An intense flood of particles or waves will not cause
ionization if these particles or waves do not carry enough
energy to be ionizing, unless they raise the temperature of a
body to a point high enough to ionize small fractions of atoms
or molecules in that fashion.

4. The electromagnetic
spectrum is the range of all
possible electromagnetic
radiation frequencies. The
electromagnetic spectrum
(usually just spectrum) of an
object is the characteristic
distribution of electromagnetic
radiation emitted by, or
absorbed by, that particular
object.

5. WHAT IS REM ?
The Rem used to be used in Health Physics to measure radiation dose, it is an
acronym for Rontgen Equivalent Man.(The methodology allows for the different
effects of different types of radiation). The unit now used is the Sievert (Sv), 1
Sievert = 100 Rem. This is a large unit, so millisieverts are used for practical
personnel radiation measures, so 1 millisievert = 100 millirem.
Recommended radiation levels for nuclear workers are set by the ICRP
(International Committee for Radiation Protection). These used to be set at 5
Rem/year (50 milliSv) but now the level is 20 milliSv/year ie 2 Rem/year. The use
of Rem and millirem has been discontinued in the nuclear industry in favour of
Sieverts and millisieverts.
However as someone with nuclear experience going back to 1958 I find it difficult
to think in Sieverts. For example I know that 500 Rem will kill roughly 1/2 the
people exposed to it within a month, now I have to change that to 5 Sieverts.
Fortunately that level of exposure has only happened once (at Chernobyl).

6. MAJOR RADIATION EXPOSURE
HISTORY writes three famous accident of Hiroshima and Nagasaki, Three Mile
According to the website
Island and Chernobyl. Each accident were so danger that many people had cancer and so on ,
as you can see. We have to think the accidents about nuclear plant and radiation how danger it
is and how difficult we solve it.

7. MEDICAL TREATMENT
There is not potential the effective treatment method of that can be
used for fatal doses of radiation now.
The case with a Japanese boy illustrates an important fact concerning
the radiation sickness.
The boy was almost the same with the person of the person to whom
the dosage of 450 rapid eye movements had been received maybe, and
his symptom had received about 300 rapid eye movements. The fatal
dose is received in the medicine, a less radiation is received with dying
people in spite of all efforts, and there is no method distinguished
between other one that it is possible to save at all.
Processing concerning the one that it is possible to save includes the
transfusion and the bone-marrow transplant.
The bone-marrow transplant makes the supply of the white blood
corpuscle to be influenced by the radiation rejuvenate.

8. CONCLUSION
I read this article and felt sad how danger radiation. So
today I talked about...
How Many Kind Of Radiation?
What Is Rem?
Major Radiation Exposure History
Medical Treatment
I wish you could be take care about them.
Thank you For watching...