t***u
发帖数: 20182 | 1 有专门测turbidity的仪器，没用过。也可以用uv-vis的transmittance at certain
wavelength。
wiki：
Measurements of turbidity
The most widely used measurement unit for turbidity is the FTU (Formazin
Turbidity Unit). ISO refers to its units as FNU (Formazin Nephelometric
Units).
There are several practical ways of checking water quality, the most direct
being some measure of attenuation (that is, reduction in strength) of light
as
it passes through a sample column of water. The alternatively used Jackson
Candle method (u |
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S*****n
发帖数: 6055 | 2 这个我知道
其实我是想问turbidity这个量是怎么定义的？
因为看见别人文章里面turbidity的单位是arbitrary unit
我想请教如何从透射光的强度换算到turbidity？
多谢！ |
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k*******a
发帖数: 772 | 3 turbidity你可以自己定义啊,那个FTU啥的我记得是90度角的scattering intensity,所
以定义都不一样,你测量的是transmittance,所以没法划算
比如你可以定义 log(I(0)/I(t)) I(0)你为没有高分子的intensity |
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j**********i
发帖数: 3758 | 4 【 以下文字转载自 Sociology 讨论区 】
发信人: jpostsildavi (ID), 信区: Sociology
标 题: The brief Code of bedridden patient care workers
发信站: BBS 未名空间站 (Sat Feb 2 11:19:09 2013, 美东)
Patient in charge often come with a fever, phlegmatic, edema，urine
turbid, arrhythmia and abnormal blood pressure. Be careful not to let
patient have bed sores, always check 6 vital signs of physical condition
of the patient:
1. heart rate 2. respiratory rate 3. body temperature 4. blood pressure
5. oxyhemoglobin 6. blood glucose l... 阅读全帖 |
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j**********i
发帖数: 3758 | 5 Patient in charge often come with a fever, phlegmatic, edema，urine
turbid, arrhythmia and abnormal blood pressure. Be careful not to let
patient have bed sores, always check 6 vital signs of physical condition
of the patient:
1. heart rate 2. respiratory rate 3. body temperature 4. blood pressure
5. oxyhemoglobin 6. blood glucose level
Care workers must communicate with the family members concerned and
doctors in charge promptly in case of emergency.
Home Phone numbers: ( ... 阅读全帖 |
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z**********e
发帖数: 22064 | 7 An Unfinished Bridge, and Partnership, Between Russia and China
By ANDREW HIGGINS July 19, 2016
ANDREW HIGGINS 2016年7月19日
NIZHNELENINSKOYE, Russia — Trumpeted for the past decade as
an emblem of Russia’s destiny as an Asian as well as a European
power, the huge steel bridge thrusts out from the Chinese side of the
Amur River, stretching more than a mile across the turbid waters that
divide the world’s most populous nation from its biggest.
俄罗斯下列宁斯科耶——过去10年里，这座钢架大桥被大加颂扬，称它
象征着俄罗斯作为亚洲和欧洲强国的天命。它从阿穆... 阅读全帖 |
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s*f
发帖数: 1071 | 8 •Hamilton, Ohio – This city has won the Berkeley Springs
International Water Testing competition (locally nicknamed the “Academy
Awards of Water”) three times recently, in 2009, 2010, and 2015. Hamilton’
s only municipal water source is the Great Miami Valley Buried Aquifer.
•Clearbrook, Abbottsford, British Columbia – In the 2016 Berkeley
Springs International Water Testing event Clearbrook won the award for Best
Municipal Water in the world. The Clearbrook Waterworks District has w... 阅读全帖 |
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l****y
发帖数: 151 | 9 sical and Chemical Properties of OREWORLDTM Ceramic Proppant
Size
Density, g/cm3
Roundness
Sphericity
Crush Resistance
Acid Solubility, %
Turbidity
Test
52MPa
69MPa
86MPa
Bulk
Apparent
7500psi
10000psi
12500psi
12%HCL+3%HF
LD20/40
(0.425-0.85)
��?.7
��?.85
0.8-0.9
0.8-0.9
��?
��?
��?0
LD30/50
(0.3-0.6)
��?.7
��?.85
0.8-0.9
0.8-0.9
��?
��?
��?0
MD16/30
(0.6-1... 阅读全帖 |
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e*z
发帖数: 1678 | 10 The common name, "walleye," comes from the fact that their eyes, like those
of cats, reflect light. This eyeshine is the result of a light-gathering
layer in the eyes called the tapetum lucidum which allows the fish to see
well in low-light conditions. In fact, many anglers look for walleyes at
night since this is when most major feeding patterns occur. Their eyes also
allow them to see well in turbid waters (stained or rough, breaking waters)
which gives them an advantage over their prey. Thus, |
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f**********y
发帖数: 252 | 11 Key words:
Atmospheric Correction
Turbid Waters
satellite remote sensing
Artificial Neural Networks
I'm looking for candidates who did research in environmental sciences,
optical limnology and/or oceanography, satellite/airborne remote sensing,
and so forth.
Please contact me by internal message. Thanks. |
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s******y
发帖数: 28562 | 12 Right. The sand is Daytona is good. Also, I personally consider driving on the
beach is a hard-to-get experience. Most other places do not allow automobile
on beach.
Bu they way, I still think most beaches on east coast are better than west
coast. Naple and clear water may be the exceptions. The problem with west
coast is the water is too calm, so it is usually turbid, not as clear as east
coast.
However, the wind in east coast is stronger, the tide is bigger, better for
sailing and surfing but |
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a****9
发帖数: 1802 | 13 BE COLOR CONSCIOUS
“Few fish are as color-selective as crappie, and their preference can change
during the day. While every lake may have its "favorite" jig color combo, it
is best to have a number of hues on hand.
In turbid waters, high visibility colors like pink, yellow, fluorescent
chartreuse and pearl white are often the most effective, while clearer water
calls for black, brown, green or pumpkinseed.
Regardless of which is working, however, when the action slows it is wise to
start experim |
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v***a
发帖数: 826 | 14 nice,thanks!
"In turbid waters, high visibility colors like pink, yellow, fluorescent
chartreuse and pearl white are often the most effective, while clearer water
calls for black, brown, green or pumpkinseed"
but this part seems very different from I just learned from another post
about the selection of lure colors? |
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g*********r
发帖数: 1443 | 15 今天学了点新知识，和大家分享：
Reflection, Refraction, and Color
The uppermost, sunlit layer of the ocean where 70 percent of the entire
amount of photosynthesis in the world takes place is called the euphotic
zone. It generally extends to a depth of 100 meters (330 feet). Below this
is the disphotic zone, between 100 and 1,000 meters (330 and 3,300 feet)
deep, which is dimly lit. Some animals are able to survive here, but no
plants. Although the amount of light is measurable at this range of depths,
there is ... 阅读全帖 |
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s****i
发帖数: 1954 | 16 From Crappie.com: "I get this question a lot and while I'm sure most of you
folks know the difference, many do not. They are not that difficult to tell
the difference really. The quick way to tell is to look at the markings on
the side of the fish. White crappie's black markings form loose vertical
bands where black crappie have the markings evenly distributed across the
entire side. Of course the surefire method is to count the dorsal fin spines
. These are the sharp spines on top of the fish t... 阅读全帖 |
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d********r
发帖数: 3279 | 17 Arsenic-associated bacteria (NASA's claims)
ResearchBlogging.org
Wolfe-Simon F, Blum JS, Kulp TR, Gordon GW, Hoeft SE, Pett-Ridge J, Stolz JF
, Webb SM, Weber PK, Davies PC, Anbar AD, & Oremland RS (2010). A Bacterium
That Can Grow by Using Arsenic Instead of Phosphorus. Science (New York, N.Y
.) PMID: 21127214
Note to new readers: I wrote this post on Saturday Dec. 4, mainly to
clarify my own thinking. I didn't expect anyone other than a few
researchers to ever read it. Since then I've made ... 阅读全帖 |
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n***3
发帖数: 663 | 18 Immunity. 2010 Mar 26;32(3):367-78. Epub 2010 Mar 11.
Control of intestinal homeostasis, colitis, and colitis-associated
colorectal cancer by the inflammatory caspases.
Dupaul-Chicoine J, Yeretssian G, Doiron K, Bergstrom KS, McIntire CR,
LeBlanc PM, Meunier C, Turbide C, Gros P, Beauchemin N, Vallance BA, Saleh M.
Please send the paper to e*********[email protected]
Thanks |
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n***w
发帖数: 2405 | 19 Photonic crystal light collectors in fish retina improve vision in turbid
water
文章链接：http://www.sciencemag.org/content/336/6089/1700.full?sid=0f2184cc-e5e3-4f26-a94f-bbabf6ae257a
视网膜里的感光细胞有两种，一种是视杆细胞（rod），一种是视锥细胞 (cone)。Rod
可以感受一个到几个的光子，所以灵敏度很高，一般用于dim vision，而cone则需要比
较高强度的光来刺激，一般用于白天等比较亮的情况下，决定visual acuity。
在大部分的生物里，rod和cone是平行分布的，但是这篇文章研究了彼式象鼻鱼(
Gnathonemus petersii)，一种生活在浑浊环境里的鱼。很早之前就有人发现了他们的
视网膜结构是比较另类的，既不是dim下用rod，bright下用cone，他们视网膜结构属于
grouped retina。这是种什么结构呢？就是cone在上，rod在下，呈杯状，具体的看文
章的图... 阅读全帖 |
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发帖数: 1 | 20 您好，不知道这个职位是否找到合适的人选，我的背景还是比较符合的，PhD期间做了
大量活性炭的工作，之间还在膜分离公司工作过四年有丰富的工程经验，请看我的简历
，如果您觉得还可以的话请与我联系，非常感谢！
Yuhe Cao
North Campus Drive 1400,
Agricultural and Biosystems Engineering,
South Dakota State University,
Brookings, SD 57007
(605) 592-0789
[email protected]/* */
Objective
Challenging research position in membrane science in a pharmaceutical, gas
adsorption, gas purification and separation, water treatment or biotech
company or university
Qualifications
• How fiber membrane fabr... 阅读全帖 |
|
发帖数: 1 | 21 您好，不知道这个职位是否找到合适的人选，我的背景还是比较符合的，PhD期间做了
活性物分离提取的工作，之间还在膜分离公司工作过四年有丰富的工程经验，请看我的
简历，如果您觉得还可以的话请与我联系，非常感谢！
Yuhe Cao
North Campus Drive 1400,
Agricultural and Biosystems Engineering,
South Dakota State University,
Brookings, SD 57007
(605) 592-0789
[email protected]/* */
Objective
Challenging research position in membrane science in a pharmaceutical, gas
adsorption, gas purification and separation, water treatment or biotech
company or university
Qualifications
• How fiber membrane fa... 阅读全帖 |
|
发帖数: 1 | 22 您好，不知道这个职位是否找到合适的人选，我的背景还是比较符合的，PhD期间做了
活性物分离提取的工作，之间还在膜分离公司工作过四年有丰富的工程经验，请看我的
简历，如果您觉得还可以的话请与我联系，非常感谢！
Yuhe Cao
North Campus Drive 1400,
Agricultural and Biosystems Engineering,
South Dakota State University,
Brookings, SD 57007
(605) 592-0789
[email protected]/* */
Objective
Challenging research position in membrane science in a pharmaceutical, gas
adsorption, gas purification and separation, water treatment or biotech
company or university
Qualifications
• How fiber membrane fa... 阅读全帖 |
|
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k*******a
发帖数: 772 | 24 打一个激光在高分子溶液后面方个photodiode,看看光pass后强度的变化
如果高分子尺寸很小的话你看不到什么,除非有micrometer以上的aggregation
或者phase transition才能看到明显的变化 |
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S*****n
发帖数: 6055 | 25 俺就是想问，怎么把transmittance折算成FTU或者FNU啊：）
direct
light |
|
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t***u
发帖数: 20182 | 27 每次看到arbitrary unit，就知道是作者自己创造出来的方法。 |
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b******a
发帖数: 704 | 28 Case 12-2013 — An 18-Year-Old Woman with Pulmonary Infiltrates and
Respiratory Failure
N Engl J Med 2013; 368:1537-1545
Presentation of Case
Dr. James Sawalla Guseh (Medicine): An 18-year-old woman was admitted to
this hospital because of pulmonary infiltrates and respiratory failure.
The patient had been well until 3 weeks before admission, when fever and a
cough productive of white, nonbloody sputum developed. During the next week,
night sweats, extremely painful pharyngitis, pleuritic chest ... 阅读全帖 |
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h********n
发帖数: 25 | 29 美国国会调查机构(CRS)最近更新的报告表明，在2005年外国学生中大约34.7%的人得到
科学系博士学位，大约63.1%
的人得到工程系的博士学位。在2005年，非合法永久居民身份的外籍学生大约30.8%得
到科学系博士学位， 大约
58.6%得到工程系的博士学位。在2004年，相应的比率分别是28.5%和57.3%。在科技发
达的社会中，每个人都了解
移民的重要性，同时也深知移民历史对于一个国家的成功具有的不可代替性.
即使是在高中程度，外籍移民和移民的子女也同样出类拔萃。比如，以下是上个春季学
期德克萨斯州休斯顿地区各个高
中成绩第一名学生的姓氏的总结： Habib，Lin，Vaughn，Mejia，Lima，Villa，
Saldana，Rajan， Rivera，
Nguyen，Jaroszewski，and Manchon；还有一些名单来自马萨诸塞州德波士顿地区的高
中： Guesh，Matos，
Maiullari，Cuko，Liao，Maletz，Liu，Turbides，Disla，McGrath，Adhami，and
Tran。
下次，当你再听到有人对移民有任何置疑 |
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