f*****n
发帖数: 970 | 1 由于电脑硬盘全面飘红，我决定把各种文档、图片都转移到网盘里去（多个账户，放大
文件的不同步到本地）～于是就有了对dropbox的各种关注～
如果亲还不知道dropbox为何物，或者基本用法，请先移步：Dropbox网站
温馨提示：众多人说dropbox在国内被墙了...我表示灰常无语...请把地址栏里的http://换成https://，看看发生了什么...
接下来是升级版应用～啊哈哈～～
1。使用Dropbox的搭建一个网站或博客
你的Dropbox有一个公共文件夹，你在这个文件夹中添加的文件，网络上任何人都可以
访问到，只要他们有一个链接指向该文件。从而可以把所有的HTML，JAVASCRIPT，CSS
和图像文件放到这个文件夹中， 定向到你的域名，你的迷你网站就正式上线了。
另外，如果你想有一个更简单的解决方案，使用 DropPages.com，Scriptogr.am 和
Pancake.io这样的应用，它们都可以使用Dropbox免费的发布你的简单的网站。
DropPages和Pancake适合定期发布网页，而Scriptogram更适合于博客格式（按时间倒
序）。
2。同步... 阅读全帖 |
|
f*****n
发帖数: 970 | 2 由于电脑硬盘全面飘红，我决定把各种文档、图片都转移到网盘里去（多个账户，放大
文件的不同步到本地）～于是就有了对dropbox的各种关注～
如果亲还不知道dropbox为何物，或者基本用法，请先移步：Dropbox网站
温馨提示：众多人说dropbox在国内被墙了...我表示灰常无语...请把地址栏里的http://换成https://，看看发生了什么...
接下来是升级版应用～啊哈哈～～
1。使用Dropbox的搭建一个网站或博客
你的Dropbox有一个公共文件夹，你在这个文件夹中添加的文件，网络上任何人都可以
访问到，只要他们有一个链接指向该文件。从而可以把所有的HTML，JAVASCRIPT，CSS
和图像文件放到这个文件夹中， 定向到你的域名，你的迷你网站就正式上线了。
另外，如果你想有一个更简单的解决方案，使用 DropPages.com，Scriptogr.am 和
Pancake.io这样的应用，它们都可以使用Dropbox免费的发布你的简单的网站。
DropPages和Pancake适合定期发布网页，而Scriptogram更适合于博客格式（按时间倒
序）。
2。同步... 阅读全帖 |
|
w********o
发帖数: 10088 | 3 我的情况是生长的时候metal比较多,长完以后有多余的metal droplets,经常也是有lz
这样的分布,边缘处较小较密, 中间有的地方droplet较大较疏
mbe生长貌似也有不少model,这方面我懂得也不多,就知道随即行走之类的
我猜lz这个问题跟温度弧度关系不大,主要是boundary的存在影响了molecules的迁移和合并 |
|
w*****1
发帖数: 220 | 4 Dear Readers,
We are happy to present the first five papers that are published in our
new, open access journal, Physical Review X. These papers, together with
others that are to be published in the coming weeks into September, will
constitute the first issue of the journal. Under PRX's open access
publishing model, they are free for you to read and use.
We are very encouraged by the breadth of their topical spread. It ranges
from the well-established field of atomic, molecular and optica... 阅读全帖 |
|
f*********1
发帖数: 2518 | 5 很佩服你辗转各方在这里跟大家辩论啊！你挑起的话题，弄得好像我们要跟你争论一样
。关于你上面提到的几点我一一回答你。你自己说的啊，不再回帖了，我们大家都看看
，你忍不忍得住。
1.病人一时无法转院你是的假设，现在美国全国都在紧急状态中，两个感染的护士都安
全转院了，有专机专人来接，怕的不是无法转院，怕的是有些医院不顾自己有没有能力
，硬要逞强，其实想要出名不怕，怕的人拿别人的命去搏自己的名，比如达拉斯的那家
医院。你对护士长安排护士不熟悉吧？想当然认为护士长会因为俺没有牺牲精神而必须
自己顶上？实际上，大部分护士长会是第一个告诉医院bedboard我们没有能力收治这样
的病人。各个科室的护士长对自己科室的保护最严格，哪一级病人去哪里治疗护士长比
下面的护士清楚得多，根本用不着护士们担心。你觉得如果医院条件不够，病区里收治
了高传染性，高致死性疾病，只有那一个护士是受害者吗？护士长比你更算得过来这个
帐。不知道你在美国有多少工作经验，显然这里的文化你还不了解不熟悉。这样的时候
看你专业不专业不是看你有没有冒死的精神，而是看你懂不懂自己的limit。就像你生
了病还带病坚持上班会让同事们很讨... 阅读全帖 |
|
c**********y
发帖数: 221 | 6 刚发现这个:http://www.fda.gov/consumer/updates/respirators061107.html
Respirator vs. surgical mask:
Respirators are not the same as surgical masks. Typically worn by doctors
and dentists, surgical masks are loose-fitting and allow air particles to
leak in around the edge of the mask. They are designed to help keep
potentially infectious droplets from being spread by the person wearing them
, and to keep sprays from coughs and sneezes from reaching the mouth and
nose of the wearer.
In contrast, N95 re |
|
|
h**********o
发帖数: 4127 | 8 How can NOx go into solid phase (such as adsorption you mentioned) and
become a part of PM2.5...... it's impossible......unless NOx is converted to
HNO3......
I am not telling you to use SEM to conduct source apportionment or to figure
out changes in PM levels...... SEM is used to identify the phase status....
..liquid droplet or solid......
You said previously that the proportion of aqueous and solid phases or
increases in these two phases can help people understand the emission
sources. It is ... 阅读全帖 |
|
d****o
发帖数: 32610 | 9 体液和体液不一样的
这玩意儿给病人洗脏衣服都能传
离droplet传播就一步之遥 |
|
N******K
发帖数: 10202 | 10 提起原子弹，人们首先想到的是质能关系式E=mc2和爱因斯坦。媒体和社会大众的普遍
印象是原子弹是根据爱因斯坦的质能关系式制造出来的。E=mc2确实能解释原子弹的威
力，但是它也能解释农村烧柴火做饭，内燃机使用汽油、柴油驱动汽车。质能关系式是
普适公式，因此，它对于制造原子弹实际上并没有什么指导意义。美国物理学家罗伯特
·塞伯（Robert Serber，1909–1997）是曼哈顿工程负责理论的科学家，他给参加该
工程的科学家讲解制造原子弹的物理基础的讲义于1965年解密，并已出版，书名为《洛
萨拉莫斯启蒙：关于如何制造原子弹的第一批讲义》（Los Alamos primer: the first
lecture on how to build an atomic bomb）。以研究核物理与核武器历史著称的美
国历史学家理查德·罗德斯（Richard Rhodes，1937-）在给该书写的序言中指出：“
这里完全不包括相对论（需要的所有知识是裂变释放能量和释放多少能量），只有很少
一点量子力学。”对于制造原子弹起决定性意义的是二十世纪三十年代后期的几个实验
，正是这几个科学实验的结果及... 阅读全帖 |
|
T*R
发帖数: 36302 | 11 FLU是DROPLET，不是AIRBORNE。
TB是AIRBORNE。 |
|
T*R
发帖数: 36302 | 12 SARS显然比EBOLA厉害。
大家最怕的还是DROPLET/AIRBORNE的感染，因为不直接接触你也能被感染，病人打个喷
嚏，咳嗽一下你就可能中枪。
接触性感染没那么可怕。 |
|
a*****y
发帖数: 33185 | 13 http://www.scientificamerican.com/article/high-power-microwave-
High-Power Microwave Weapons Start to Look Like Dead-End
Despite 50 years of research on high-power microwaves, the U.S. military has
yet to produce a usable weapon
By Sharon Weinberger | September 12, 2012
E-BLAST
Nature
By Sharon Weinberger of Nature magazine
For some Pentagon officials, the demonstration in October 2007 must have
seemed like a dream come true — an opportunity to blast reporters with a
beam of energy that causes s... 阅读全帖 |
|
l*****r
发帖数: 687 | 14 Design
A Molotov cocktail is a breakable glass bottle containing a flammable
substance such as gasoline, alcohol or a napalm-like mixture, with some
motor oil added, and usually a source of ignition such as a burning cloth
wick held in place by the bottle's stopper. The wick is usually soaked in
alcohol or kerosene, rather than petrol.
In action, the wick is lit and the bottle hurled at a target such as a
vehicle or fortification. When the bottle smashes on impact, the ensuing
cloud of fuel drop... 阅读全帖 |
|
j****n
发帖数: 464 | 15 https://www.cdc.gov/media/releases/2020/p0121-novel-coronavirus-travel-case.
html
First Travel-related Case of 2019 Novel Coronavirus Detected in United
States
Press Release
For Immediate Release: Tuesday, January 21, 2020
Contact: Media Relations
(404) 639-3286
The Centers for Disease Control and Prevention (CDC) today confirmed the
first case of 2019 Novel Coronavirus (2019-nCoV) in the United States in the
state of Washington. The patient recently returned from Wuhan, China, where
an outbreak... 阅读全帖 |
|
i****d
发帖数: 724 | 16 I hope that is true, transmission by droplets is far easier to prevent |
|
V*****2
发帖数: 7930 | 17 Last month, a novel coronavirus emerged from the city of Wuhan in the Hubei
province of China. This novel coronavirus, thought to have been initially
transmitted to humans from an unknown animal source, is now being spread
from person to person and causing an outbreak of respiratory illness. In
addition to thousands of cases in China, multiple other countries, including
the United States, have confirmed cases of coronavirus. In the U.S., cases
have been confirmed in the cities of Seattle and Chi... 阅读全帖 |
|
发帖数: 1 | 18 必须要扩增达到一定水平之后荧光探针才有反应，
现在最灵敏的digital droplet-PCR 也做不到这么快 |
|
发帖数: 1 | 19 上digital droplet PCR 这个最灵敏 |
|
发帖数: 1 | 20 非洲猪瘟病毒微滴数字PCR (ddPCR)方法的建立及应用
邬旭龙1Δ, 肖璐2Δ, 宋勇5, 林华4, 陈世界4, 杨苗4, 安微4, 姚学萍1,3, 杨泽晓1,
3, 王印1,3
摘要：【目的】 非洲猪瘟病毒(African swine fever virus，ASFV)能导致猪群高死亡
率，从而造成严重的经济损失。因此，建立严密、高效的防控系统，包括灵敏、准确的
诊断方法以及高效的预报预警机制等，以避免ASF传入我国。本文旨在建立一种新型而
高灵敏度的ASFV微滴数字PCR (Droplet digital PCR，ddPCR)检测方法。【方法】 针
对ASFV K205R基因设计一对特异性引物和TaqMan探针，通过反应条件优化，建立了ASFV
实时荧光定量PCR (qPCR)和ddPCR检测方法；并对两种方法的线性关系、灵敏性、特异
性和重复性进行了评估，利用建立的ASFV检测方法对163份国内和进境的组织样本及血
清样本进行检测，血清样本经商品化ASFV ELISA试剂盒复检，评估不同方法检测结果的
符合率。【结果】 建立的ASFV qPCR和ddPCR检测方法线性... 阅读全帖 |
|
发帖数: 1 | 21 ddPCR 没有问题的，放心吧，只有假阳性，没有假阴性
Digital PCR as a tool to measure HIV persistence
Although antiretroviral therapy is able to suppress HIV replication in
infected patients, the virus persists and rebounds when treatment is stopped
. In order to find a cure that can eradicate the latent reservoir, one must
be able to quantify the persisting virus. Traditionally, HIV persistence
studies have used real-time PCR (qPCR) to measure the viral reservoir
represented by HIV DNA and RNA. Most recently, digital P... 阅读全帖 |
|
S*******l
发帖数: 4637 | 22 飞沫传播就是空气传播
Airborne diseases are caused by pathogenic microbes small enough to be
discharged from an infected person via coughing, sneezing, laughing and
close personal contact or aerosolization of the microbe. The discharged
microbes remain suspended in the air on dust particles, respiratory and
water droplets. |
|
|
|
|
S*******l
发帖数: 4637 | 26 气溶胶传播途径确定，国内已经开始宣传了。
本来气溶胶传播是个given, 流感就是气溶胶传播。新冠作为呼吸道传染病，气溶胶传
播根本就是by default，喷嚏，咳嗽本来就可以雾化droplet, 根本不会迅速沉降。
美国还在纠结口罩对流感传播有没有实际效果。 |
|
c******e
发帖数: 1351 | 27 方舟子科普应该是对的吧（以下转载）：
飞沫传播(large-droplet)和气溶胶传播(aerosols)是病毒两种不同传播方式，有明确
定义。反而是空气传播(airborne)定义不明确，有时泛指二者，有时特指气溶胶传播。 |
|
u***r
发帖数: 4825 | 28 https://news.sina.com.cn/c/2020-02-11/doc-iimxyqvz1949884.shtml
原标题：张文宏：节后返工和气溶胶传播是否会打破当前的拐点
近日，武汉新型冠状病毒肺炎的疫情举世瞩目，社交媒体上的信息轰炸牵动着全国
人民的心。为帮助大家了解疫情的动态变化，复旦大学附属华山医院感染科微信公众号
“华山感染”每日更新疫情相关数据，并邀请华山医院感染科专家王新宇、张文宏就疫
情的变化趋势、热点问题及相关注意事项，专门进行答疑解读。
王新宇是华山医院感染科副主任医师；张文宏是华山医院感染科主任，中华医学会
感染病学分会常委兼秘书长，中华预防医学会感染病分会副主任委员，他所领衔的华山
医院感染科是国家重点学科，参与过“非典”与人感染H7N9禽流感的救治，张文宏也是
上海市新型冠状病毒感染的肺炎医疗救治专家组组长。自武汉疫情发生以来，王新宇、
张文宏持续跟踪，已在“华山感染”连撰数文，他们的文字既专业严谨又通俗易懂，澎
湃新闻经授权转发，我们希望“华山感染”的这一组文章对读者更理性地看待疫情、更
有效地做好自我防护工作有所裨益。
前言：元宵过后顾虑多
过... 阅读全帖 |
|
r*****g
发帖数: 9999 | 29 扯淡
“Wearing a face mask is not an iron clad guarantee that you won’t get sick
– viruses can also transmit through the eyes and tiny viral particles,
known as aerosols, can still penetrate masks. However, masks are effective
at capturing droplets, which is the main transmission route of coronavirus,
and some studies have estimated a roughly five-fold protection versus no
barrier.”
https://www.theguardian.com/world/2020/mar/02/worse-than-the-flu-busting-the
-coronavirus-myths-face-masks-vaccine-co... 阅读全帖 |
|
a*****6
发帖数: 1800 | 30 这个口罩保护是指对医护人员的保护
不是指对普通人带口罩的保护。
你理解不行啊
发信人: realbug (WA), 信区: Military
标 题: Re: 世界卫生组织官网：带口罩作用未证实而且增加风险
发信站: BBS 未名空间站 (Tue Mar 3 01:26:10 2020, 美东)
扯淡
“Wearing a face mask is not an iron clad guarantee that you won’t get sick
– viruses can also transmit through the eyes and tiny viral particles,
known as aerosols, can still penetrate masks. However, masks are effective
at capturing droplets, which is the main transmission route of coronavirus,
and some studies have estimated a roughly five-fo... 阅读全帖 |
|
a***s
发帖数: 1084 | 31 习特厚国家
---------
https://www.sacbee.com/news/local/health-and-medicine/article241047391.html
Coronavirus exposure no longer means automatic 14-day isolation, Sacramento
County says
Sacramento County announced Monday that its public health department will no
longer recommend isolation or quarantine for people exposed to someone with
COVID-19, making a pivot from a strategy of containment to one of
mitigation.
In an interview, Dr. Peter Beilenson, head of the county’s Department of
Health Services,... 阅读全帖 |
|
m**p
发帖数: 7 | 32 大夫这个扯的离谱了。如果气溶胶是主要传播途经，那口罩确实用处不大。
新冠传染途经主要2个。1是droplets，2是污染后的表面造成接触传染。
口罩能很好的阻断1的传染，和不带口罩相比，戴口罩的安全概率大多了。 |
|
T*******x
发帖数: 8565 | 33 你这么说也有道理。口罩对droplets肯定有用。 |
|
a*****6
发帖数: 1800 | 34 你太笨了
这段话原文有个link。
点击后进入
https://health.ucdavis.edu/health-news/newsroom/2019-novel-coronavirus-what-
you-need-to-know/2020/02
然后最下面
Wash your hands!
Good hand hygiene is crucial for keeping you and your family healthy. Wash
your hands often with soap and water or use alcohol-based hand gels.
What about masks?
Public health officials do not recommend that people wear masks unless they
are actually sick. As with many contagious viruses, the key is to prevent
the spread of respiratory droplets from... 阅读全帖 |
|
a*****6
发帖数: 1800 | 35 你太笨了
这段话原文有个link。
点击后进入
https://health.ucdavis.edu/health-news/newsroom/2019-novel-coronavirus-what-
you-need-to-know/2020/02
然后最下面
Wash your hands!
Good hand hygiene is crucial for keeping you and your family healthy. Wash
your hands often with soap and water or use alcohol-based hand gels.
What about masks?
Public health officials do not recommend that people wear masks unless they
are actually sick. As with many contagious viruses, the key is to prevent
the spread of respiratory droplets from... 阅读全帖 |
|
a*****6
发帖数: 1800 | 36 别被谣言骗了
医院按CDC防护标准
Evidence gathered from multiple academic medical centers in the U.S.,
including here at UC Davis Health, supports the CDC’s move from airborne
precautions to droplet precautions. |
|
a*********n
发帖数: 390 | 37 都是自己人，就实话实说了
cdc没说带口罩有害，只说不推荐带，没说推荐不带，不要过度解读
cdc没有ncov19的口罩预防数据，一切是基于过去的经验，然鹅cdc的经验已经在过去的
2个月里被花式打脸
美国人至今不相信ncov19有气溶胶传播，仍然以droplet传播为前提预防，这一方面是
种族主义的傲慢，不相信中国的数据；一方面也是条件有限，没办法大规模开展气溶胶
传播的预防
总结：中国人，带口罩！ |
|
F********r
发帖数: 878 | 38 Agree. That's also what I told some of the people I know. Diamond Princess
is telling us that this virus definitely can get into the air, in the
coughing droplet, aerosol or whatever you call it, otherwise there is no way
to explain its high infection rate of 19%. The US does want to learn from
China due to its arrogance; however, once the lesson is painful enough, they
will learn. |
|
a*****6
发帖数: 1800 | 39 不需要戴口罩
Uc davis 治疗三例病人后，医疗团队再次确认口罩没用
https://health.ucdavis.edu/health-news/newsroom/2019-novel-coronavirus-what-
you-need-to-know/2020/02
然后最下面
Wash your hands!
Good hand hygiene is crucial for keeping you and your family healthy. Wash
your hands often with soap and water or use alcohol-based hand gels.
What about masks?
Public health officials do not recommend that people wear masks unless they
are actually sick. As with many contagious viruses, the key is to prevent
the spread of respiratory ... 阅读全帖 |
|
B*******c
发帖数: 5056 | 40 手离鼻孔很远，但脸离鼻孔很近，
病毒一步步靠近鼻孔，最后被吸入。
但这只是周围没有病人的情况，
病人通过呼吸和咳嗽可以让周围空气中出现大量悬浮的droplet，里面充满病毒
: 病毒在你手上，怎么进入呼吸道的？挖鼻孔？
|
|
t****r
发帖数: 1606 | 41 https://www.washingtonexaminer.com/washington-secrets/trending-out-of-
control-teens-coughing-on-grocery-store-produce
Trending: Out-of-control teenagers coughing on grocery store produce
Idle teenagers are participating in a “disturbing trend” of coughing on
grocery store produce and posting their pranks online as the nation fights
the coronavirus, which is known to spread from human “droplets” spraying
from mouths. |
|
s******n
发帖数: 518 | 42 【 以下文字转载自 History 讨论区 】
发信人: shaodian (有熊), 信区: History
标 题: 美国生物实验室泄露
发信站: BBS 未名空间站 (Sun Mar 22 15:25:05 2020, 美东)
Google翻译一次只能3900字符。
https://www.usatoday.com/story/news/2015/05/28/biolabs-pathogens-location-
incidents/26587505/
Investigation reveals hundreds of accidents, safety violations and near
misses put people at risk
Alison Young and Nick Penzenstadler, USA TODAY
Vials of bioterror bacteria have gone missing. Lab mice infected with deadly
viruses have escaped, and wild rodents have b... 阅读全帖 |
|
发帖数: 1 | 43 While a surgical mask may be effective in blocking splashes and large-
particle droplets, a face mask, by design, does not filter or block very
small particles in the air that may be transmitted by coughs, sneezes, or
certain medical procedures. Surgical masks also do not provide complete
protection from germs and other contaminants because of the loose fit
between the surface of the face mask and your face.
你所谓的文献，你给我找出证据来 |
|
c******d
发帖数: 206 | 44 从两侧呼吸？没有任何过滤作用？英文不好？
Surgical masks are made in different thicknesses and with different ability
to protect you from contact with liquids. These properties may also affect
how easily you can ”breathe through” the face mask and how well the
surgical mask protects you.
If worn properly, a surgical mask is ”meant to help block” large-particle
droplets, splashes, sprays, or splatter that may contain germs (viruses and
bacteria), keeping it from reaching your mouth and nose. Surgical masks may
also h... 阅读全帖 |
|
发帖数: 1 | 45 原来看的找不到了。
不过随手一篇 68%
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4293989/
Aside from handwashing, the use of facemasks is also valuable in infectious
disease control, especially in circumventing droplet transmission.(14,15)
For example, the effectiveness of surgical masks and N95 masks in blocking
the transmission of SARS are 68% and 91%, respectively.(7)
Facemasks, when fitted properly, effectively disrupt the forward momentum of
particles expelled from a cough or sneeze, preventing disease tra... 阅读全帖 |
|
W*****B
发帖数: 4796 | 46 Should I wear a mask?
For health-care workers, the answer is obviously yes. But which masks? The
World Health Organization and the Centers for Disease Control and Prevention
both state that doctors and nurses can use basic surgical masks when
treating COVID-19 patients, switching to the more advanced N95 respirators
if they’re carrying out procedures that might create aerosols. But such
recommendations assume that the virus isn’t generally airborne. Because it
might be, health-care workers shoul... 阅读全帖 |
|
i****r
发帖数: 673 | 47 那么，你调查过人在交谈时，飞沫（large droplets）和气溶胶（aerosols）
各占多大比例吗？有效病毒载荷•滞空时间积各为多大吗？
行，你也承认全民戴口罩有效，就好了
流行病最重要的是检测隔离，而非救治 |
|
a*********n
发帖数: 390 | 48 很矛盾
一边说是droplet传播
一边不要kn95 |
|
i****r
发帖数: 673 | 49 对，大部分是 large droplets，普通口罩就够了 |
|
q*a
发帖数: 2330 | 50 ☆─────────────────────────────────────☆
weiqing (weiqing) 于 (Wed Aug 1 14:43:41 2012, 美东) 提到:
希望可以转载至各媒体或社交网络，谢谢！我在微博上生成了图片http://ww4.sinaimg.cn/bmiddle/488ffe06jw1dvhqo3a5cyj.jpg，你们可以转载或自
己生成。http://www.weibo.com/u/1217396230 仅签名没用，需要渠道让更多人看到！
时间仓促，必有不足，也请更新补充内容。
致中国伦敦奥运代表团，中国国家体育总局，新华社：
中国伦敦奥运代表团所有成员，中国国家体育总局及其所属所有部门，新华社所有记者
与编辑，你们好！
我们是海外的部分华人代表，以此信向你们表达对世界羽联取消我国羽毛球选手于洋、
王晓理伦敦奥运会参赛资格一事中，中国代表团领导的态度以及新华社部分言论的遗憾
。
1、 从奥林匹克精神上来说
a. 奥林匹克运动会的诞生，是希望将赛场代替战场，将人类对第一的朴素追
求在赛场上释放出来。运动员为了获得... 阅读全帖 |
|
