d*****r
发帖数: 39446 | 1 【此篇文章是由自动发信系统所张贴】
erbium 申请加入本俱乐部的请求已经通过审批, 成为本俱乐部的正式成员, 特此通知. |
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T******1
发帖数: 158 | 2 From: Laser Dermatology by Christine C.Dierickx/David J. Goldberg
The management of giant congenital melanocytic nevi (GCMN) remains difficult
. It has been well proved that there is an increased risk of malignant
changes among patients with these lesions, although the amount of increased
risk for each individual patient is not clear.
Removal of superficial nevus cells is possible by dermabrasion, curettage,
shave excision, or laser. High energy CO2 laser therapy is less traumatic
and can produc... 阅读全帖 |
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m*****e
发帖数: 1063 | 3 chemical elements:
Barium
Argon
calcium
titanium
iron
Erbium
vanadium
virology, |
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s******l
发帖数: 278 | 4 CHAPTER 15
Erbium Dowel
The earth, that is sufficient, I do not want the
constellations any nearer, I know they are very well where
they are, I know they suffice for those who belong to them.
-Walt Whitman
Leaves of Grass
"Song of the Open Road" (1855)
it took years, it was a technological dream and a
diplomatic nightmare, but finally they got around to
building the Machine. Various neologisms were proposed, and
project names evocative of ancient myths. But from the
beginning everyone had called |
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s*****n
发帖数: 536 | 5 OK. still energy is constant. The power of signal comes from the power
of pump laser, right? Then how much power a pump laser can provide
actually set the highest power a signal can get, right?
Saturation power just define a region of saturation, within which
the gain is not constant over input power, the fundamental of this
saturation comes from what?----two things, all of the Erbium ion are
excited, or, all of your pump power are used. So there must a upper
limit for the output power, otherwis |
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kx
发帖数: 16384 | 6 发信人: erbium (阿不__无所为而为), 信区: NJUExpress
标 题: 假如真让政府得逞，几百年后某诗人的怀古诗
发信站: 南京大学小百合站 (Sat Nov 22 12:58:35 2008)
汉口路怀古
访南京大学遗址，仿刘禹锡《西塞山怀古》泣血而作
外资滚滚流苏州
金陵王气黯然收
千名学子挤地道
一条官路出石头
人生几回伤往事
屁股依旧指挥头
从今鸡犬不宁日
车声隆隆憩园休 |
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S*********k
发帖数: 507 | 7 From today's NY Times:
Tingye Li （厉鼎毅）, Instrumental in the Laser’s Development, Dies at 81
Tingye Li, an electrical engineer whose calculations in the early 1960s
helped guide the development of the laser and propel the dizzying increase
in the speed of fiber-optic communication, died on Dec. 27 in Snowbird, Utah
. He was 81.
Family photo
Some of the work done by Dr. Tingye Li and his colleagues at Bell Labs laid
the groundwork for today’s broadband.
The cause was a heart attack while he was on... 阅读全帖 |
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