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全部话题 - 话题: watersheds
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T*******m
发帖数: 27308
1
葡萄美酒,这是我的翻译。希望不是太迟。
Scaling all these green mountains adds nothing to my years
– An interview of Gan Liang by Lance Li & Shawfay Guo. July 2012
Brief introduction of the interviewee. Gan Liang was among the first group
of college students after the Cultural Revolution in China. He graduated
from the Department of Technical Physics, Peking University, in 1982. Gan
Liang came to the United States under the auspice of CUSPEA sponsored by Dr.
Tsung Dao Lee in 1983. He was awarded a Ph.D. in solid ph... 阅读全帖
T*******m
发帖数: 27308
2
葡萄美酒,这是我的翻译。希望不是太迟。
Scaling all these green mountains adds nothing to my years
– An interview of Gan Liang by Lance Li & Shawfay Guo. July 2012
Brief introduction of the interviewee. Gan Liang was among the first group
of college students after the Cultural Revolution in China. He graduated
from the Department of Technical Physics, Peking University, in 1982. Gan
Liang came to the United States under the auspice of CUSPEA sponsored by Dr.
Tsung Dao Lee in 1983. He was awarded a Ph.D. in solid ph... 阅读全帖
z********o
发帖数: 18304
3

1)首先,这不是广泛接受的“科学理论”。如你给出的连接所说:“Soon after the
watershed publication, some population geneticists criticised the analytical
method as flawed, and also criticised some of the secondary conclusions[40]
while some claimed the interpretation as dubious.[41][42][43][44] Alan
Templeton asserted that the study did "not support the hypothesis of a
recent African origin for all of humanity following a split between Africans
and non-Africans 100,000 years ago" and also did "not support the
hypothesis of a... 阅读全帖
x*******a
发帖数: 11067
4
I am going to join a Clean Watershed program, basically, picking up garbage
along a river for a few hours, out in the woods. Hope it will be fun.
And Zumba class, I am trying to shed some maternity weight before going back
to Xian in May.
a***y
发帖数: 19743
5
来自主题: Apple版 - 政权交替
这个总结得很好:
If this was only about Forstall being a problem, though, Apple would replace
him. They clearly aren’t: the same press release explicitly states a
search is underway to replace Browett. Not only is this a profound increase
in responsibility for all three of these top executives, it’s a profound
change in Apple’s organization going as far back as I can remember. There’
s a long-standing pattern of separating watershed products important to the
company’s future. The Mac and Apple teams. Ma... 阅读全帖
c**i
发帖数: 6973
6
Lo Hsiu-wen and Sofia Wu, Acer Mum on Reports that Its ousted CEO Will Join
Samsung. Central News Agency, July 223, 2011.
http://focustaiwan.tw/ShowNews/WebNews_
Detail.aspx?Type=aECO&ID=201107230019
(Gianfranco Lanci)
-----------------------------------Separately
(1) Owen Fletcher, SMIC Shares Sustain Three-Day Fall. Asia Wall Street
Journal, July 20, 2011
http://online.wsj.com/article/SB100014240
53111903461104576457550484483520.html
("'The company remains caught between a rock and a hard plac... 阅读全帖
h****6
发帖数: 229
7
来自主题: Hardware版 - windows 8 真是一坨屎
windows 8?
At the moment, Microsoft Surface is hot
CENTURY CITY, Calif.--As of this weekend, Microsoft has a hot product on its
hands.
Reviews notwithstanding (some have been pretty negative), on Friday my local
Microsoft store in Century City (in Los Angeles) was buzzing with curious
customers keen on trying the Surface RT tablet, as lines snaked outside.
Other stores drew crowds too.
(And all three Surface models are back-ordered three weeks on Microsoft's
online store.)
I was surprised to see... 阅读全帖
L****g
发帖数: 155
8
来自主题: Security版 - The history of worm(蠕虫)
In November 1988 Robert Tappan Morris, a Cornell University graduate student,
launched an internet worm that spread like wildfire, infecting thousands of co
mputers and causing servers to crash.
The worm landed Morris three years of probation, 400 hours of community servic
e and a $10,000 fine. The incident wound up in the history books as a watershe
d in internet security.
"It was a massive event," said Ed Skoudis, vice president of ethical hacking,
incident response and digital forensics at US
b*****l
发帖数: 9499
9
赞 boos :)
建议先用 DAPI image 来做 thresholding 找出每个 nuclei,可能还需要做
segmentation 来区分开相邻的 nuclei,这个用 watershed 比较好。然后用 nuclei
的结果做 mask 来处理 TUNEL 的图像(如果背景干扰比较大,而且背景跟信号有叠加
,可以先去一遍背景),就可以得出每个 nucleus 里的 TUNEL 信号来。把这 1000+
nuclei 的 TUNEL 信号统计起来画成一个分布,然后就可以用分峰软件准确地找到两个
峰,算出面积,就可以很准确地得出 apoptosis rate。同时,也可以找到最佳的
threshold 点来分 TUNEL 信号,这样就可以把原始图上的每个细胞核都标为 pos 或者
neg。这样做的好处是根据分峰结果可以算出两类错误分别是多少。
这个流程的每一步,都是很规范很常用的工具,可以 google 到 ImageJ 的代码。不知
道有没有人集成过,反正我到最后还是懒得集成了。

staining
see
g***j
发帖数: 40861
10
来自主题: Biology版 - paper needed
Unno T, Jang J, Han D, Kim JH, Sadowsky MJ, Kim OS, Chun J, Hur HG.
Environ Sci Technol. 2010 Sep 20. [Epub ahead of print]
Use of Barcoded Pyrosequencing and Shared OTUs To Determine Sources of Fecal
Bacteria in Watersheds.
s*****[email protected]
Thanks
P******X
发帖数: 8
11
来自主题: CivilEngineering版 - 有做Stormwater方向的吗
未来几个月可能有一个stormwater方向的entry-level职位,在Fairfax,VA。如果知道
有water resources engineering, watershed management, BMP, LID相关背景的同学
,请帮忙转一下。可以把简历发到我站内信箱,多谢。
s********n
发帖数: 154
12
来自主题: Environmental版 - 如何自学GIS?
上学期用了那个ESRI的tutorial过了一遍ArcMap,但那本书实在教的太简单了,我只会
一些ArcMap的基本操作,一些稍微深一点的,比如利用elevation划分watershed之类的
,我就不行了,而且一看到raster也马上完蛋。查看了我们学校的所有与GIS有点边的
课,没有找到好的,所以现在准备弄本书自学。我希望我能把它自学到professional的
程度,各位有何教材推荐的,而且应该是怎样的一个学习顺序?
看了网站上同志们的就业信息觉得很是人心惶惶的,别是毕业了也找不到工作呀。
s********n
发帖数: 154
13
来自主题: Environmental版 - Anyone knows where I can download MAGIC model?
I know Mike She is a software developed by a Denmark company. I have ever
used it to simulate hydrology, but not water quality. Do you have any
experience of that software for the application in the watershed
ACIDIFICATION?
I also used HSPF from BASIN 4.0. HSPF runs good for nitrogen, but not pH due
to the program limitation. That's why I am looking for new model or
software to compute the acidification.
a***h
发帖数: 1222
14
watershed management, stormwater managment, water quality simulation
a***h
发帖数: 1222
15
来自主题: Environmental版 - 问做stormwater treatment的高人一个问题
I am not quite sure what kind of answer you are looking for. Are you trying
to obtain NPDES permits for the construction projects? If so, it may only
depend on the watershed the projects is in but not the distance from the
waterbody.
m********e
发帖数: 177
16
看你具体做什么的了。如果是water resource engineering/watershed management之
类的可能在美国更有市场一些。
S****t
发帖数: 2183
17
来自主题: Environmental版 - 被挫折了一下!
呵呵,你是内行啊。你说的没错,但是因为我在农业工程系学习,所以我们系的项目就
比较侧重于农业生产,就拿我做的项目来说就是搞Best Management Practices (BMP
),这里面就涉及到农药和氮肥、磷肥的污染与控制这些。我的方向侧重于水文、水质
还有灌溉,和生物没有太大关系。
我们也有老师搞Watershed Hydrology的,也有搞Remote Sensing的,也有搞ET的,还
有搞Hydrological Modeling的。我们系没有人搞流体力学和泥沙这些,Civil他们那边
有。我们学校还有很多人在搞湿地水文。所以我们学校的几个系,比如我们
Agricultural Engineering, Civil, Environmental, Soil and Water 等就联合起来
搞了一个Hydrology Cluster,相当于一个Minor。
你说的这几个杂志也正是我们平时看paper的。看了你的例子,我也是有了不少的信心。
谢谢啊!

PHD
a*****a
发帖数: 1038
18
来自主题: Environmental版 - 中美间水处理在工业界差距有多大

~~~~~~~~~~~~~~~~~~~~I think you mean Resource Water Protection Plan or
Watershed Protection Plan.
c********i
发帖数: 1489
19
http://news.yahoo.com/s/ap/20080309/ap_on_re_us/pharmawater_watersheds;_ylt=AqmULGt.jL8lSFmCNNoVHTas0NUE
Here's the list of the 28 areas with pharmaceuticals detected, with the
number found and some examples.
Arlington, Texas: 5 (unspecified drugs)
Atlanta: 10 (including caffeine, sulfamethoxazole, diltiazem, acetaminophen,
trimethoprim, cotinine and paraxanthine)
Cincinnati: 4 (gemfibrozil, ibuprofen, sulfamethaxazole and ethinyl
estradiol)
Columbus, Ohio: 15 (including azithromycin, erythromyc
m*l
发帖数: 507
x********u
发帖数: 15396
21
我在费城,居然63。。。
m*l
发帖数: 507
22
NBC的新闻里刚播了这条新闻。费城查出来的最多。
上学的时候做过一些这方面的研究。
首先这个东西的机理很复杂,大家都知道对人有影响,但是怎么影响,量多少会有影响
还不太清楚。
另外,就算立法也有很大困难执行。主要是分析起来很难。因为这里讲的是PPB级别的
浓度,以目前的常用仪器和方法,很难实现准确,快速的测定。
不过都上NBC新闻了,说明现在这个东西已经火起来了。越来越多的实际工程项目将要
考虑EDC的控制了。
f*****0
发帖数: 489
23

trace
embryos
what knowledge do you have that suggests this "foundamental impact"?
don't drink?
f*****0
发帖数: 489
24
I am not sure why this comes to everyone as a surprise? some of the medicine
we take will not be absorbed by our bodies and they go into the sewage, or
through landfills, which sooner or later will find its way into our water
supply.
what's so surprising about it, especially for you "environmental"
professionals?
d******e
发帖数: 299
m*l
发帖数: 507
26
环境这一行做的东西虽然不是特别深,但是很广。同是一个系的两个相邻的实验室,很
有可能根本就不懂对方做的是什么东西的。
所以当考环境的PE的时候觉得题出的特别没道理,搞水的为什么要懂如何烧垃圾呢。

medicine
or
o**e
发帖数: 542
27
有时候还要烧剩余污泥,如果剩余活性污泥为0,当然不用烧垃圾(污泥)了,呵呵
o**e
发帖数: 542
28
这些东西早就在水里了,EPA好像还有几百个有机化合物在waiting list上准备加到饮
用水监测标准里吧,但是具体多低的浓度对人体是安全的,没有10来年的评估难以定论吧

acetaminophen,
V*******7
发帖数: 53
29
搞环境评价/法规的和喂小白鼠的不愁funding了。
a***h
发帖数: 1222
f*****0
发帖数: 489
31

still, it is excusable that AP's journalists don't know that. But for anyone
with a college degree who didn't anticipate this and got surprised? s/he
deserves a full refund of his/her college tuition.
f*****0
发帖数: 489
32

without reading it, i know it is scary. afterall, that's how they sell books.
they would be foolish if they were anything but scary.
f*****0
发帖数: 489
33

of
before you lable it a problem, don't you need to prove that it is a problem?
there is no "pure" watre as we know it. so there is always traces of "
impurity" in our water, or whatever we run into.
so before you spend billions of dollars to treat such a "problem", you will
need to at least spend a few dollars to prove it out and convince the rest
of us that traces of stuff at ppb or lower levels are indeed problems.
maybe you can help educate the rest of the population on that front.
o**e
发帖数: 542
34
Alcohol, smoking and obesity reduce sperm counts, pesticides and chemicals
damage sperm quality.

the
50
a*****a
发帖数: 1038
35
hi man, I can not agree with you anymore. USGS starte to study and develop
analytical methods starting from the mid 90s last century. My graduate
research used to focus on the removal of the EDC and PPCPs from drinking
water 10 years ago. I still remembered that, there were no more than 10
journal papers published in the worldwide, which were all from Germany and
Switezland on this issue during that time. Since I am currently serving as
a member of the AWWA Organic Contaminant Committee, I'm
f*****0
发帖数: 489
36

agreed. often times, it's the naveity that really really kills me.
I am, there is risk in anything we do, or don't do. Just because there are
some chamicals in water doesn't mean that a) it will have *materially*
negative impact on us; and b) we should fix it.
it is so frustrating to see some common sense seems to be missing from so
many well educated people.
a********n
发帖数: 102
37
looks like bottled water industry will thrive le
so is membrane technology

acetaminophen,
a*****a
发帖数: 1038
38
MF & NF are not working effectively on most of compounds, and RO could take
care some but not all. There are no single technology to remove the EDC and
PPCPs from the potable water.
a***h
发帖数: 1222
39
There will probably be more job opportunities for us if the stuff is
regulated. I am just being selfish to scare people to believe the water they
are drinking contains a whole bunch of toxics.

develop
as
f*****0
发帖数: 489
40

they
that's no different from a con-artist, albeit a highly paid well degreed con
-artist.
remember, you may be able to cheat some of the people some of the times but
you will not be able to cheat all the people all the times.
f*****0
发帖数: 489
41
through out my career, I have found that I make more money off people over
the long run by telling them the truth, even if that means less business for
me.
People respect you if you have integrity, ethics, and honesty. if your goal
is to maximize your profits by telling lies to people and frontrunning your
clients' interests, it is just a matter of time before you are caught in
your own mess.
a***h
发帖数: 1222
42
I was kidding. Apprently it is a bad joke.
I don't believe there is absolute truth in many environment issues amid the
complexicity of nature. Many times environment "science" is actually more of
an art than science. Not to say the even more complex political forces
involved in those issues. Albeit the effort we make, most time the solution
is just compromise. Scientific knowledge many times is rarely valued in
making compromise. It makes me frustrated so I tend to make bad jokes.
As for the iss
f*****0
发帖数: 489
43
"BTW, those pharmcautical earn huge money by scare people with all
sorts of fake diseases. "
considering that most drugs cannot beat the placebo effect of sugar pills, I
would consider most of the benefits of taking drugs to be psychological.
and if there is a market for that, so be it.
x*******a
发帖数: 11067
44
来自主题: Environmental版 - 估计公司要招人乐-地下水模型方向
Location: Reston, Virginia
Level: Entry Level
Title: Modeler / Scientific Programmer
Job ID: MOD06
Description: HGL is always looking for talented Modeler/Scientific
Programmers. Read here to see if this position fits you. Responsible for
developing and applying state-of-the art groundwater / surface water
modeling software, and graphical user-interfaces. Requires strong background
in Fortran, C++ and GIS programming, and demonstrated experience with using
groundwater and surface water/watershed
a***h
发帖数: 1222
45
There are many types of waste water. There is no universal waste water
standard.
What EPA has is a National Recommend Water Quality Criteria. You can GOOGLE
it. Every state develop their own surface water quality criteria based on
the EPA recommend level.
The criteria for individual waste water discharge is even more complicated.
Depends on the watershed they are in, the applicable standard might be based
on anti-degradation or TMDL level.
s********n
发帖数: 154
46
来自主题: Environmental版 - 求助如何才能成为期刊审稿人
博士快要毕业了,只发表了一篇文章在water, air and soil pollution上。现在做的
是watershed acidification方面的,偏向于化学与water resource的方面。现在想做
个期刊审稿人,为以后作点准备,但不知道什么样的期刊会接受我这种没有经验的呢?
而且又是与我的方向比较相近。谢谢各位给点推荐。
x*******a
发帖数: 11067
47
HydroGeology或者数学比较强的NUMERICAL MODELING应该还不错.
别做试验,别做Hydrology WATERSHED 这种没太大技术含量的.
a***h
发帖数: 1222
48
来自主题: Environmental版 - Engineering job - stormwater modeling
Department: Water Resources
Location: Tetra Tech Division - Charleston, WV
Metropolitan Area: Charleston, WV
Job Level: Staff Engineer
Employment Status: Full-Time (Regular)
Responsibilities:
Tetra Tech, a national leader in watershed management and assessment, seeks
water resources engineers and scientists interested in working closely with
national leaders on a wide variety of stormwater planning and design,
abandoned mine reclamation, and modeling projects. Key requirements of the
position in
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