M*******s
发帖数: 108 | 1 某些地方看过来的
Ultrafast, ultrabright x-rays offer a way past this dilemma. The idea is
that a quick pulse of tightly focused x-
rays can be diffracted from a microcrystal or even a single protein or virus
in solution. The pulse is so brief
that it comes and goes before any of the atoms can move, freezing their
orientation like a strobe light. Just as
important, a sufficiently brief pulse may terminate before radiation damage
effects can start. In this way it can
outrun radiation damage, always one of |
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o**a
发帖数: 86 | 2 first you can get the 90 deg pulse width at your desired spin lock level.
(spink lock level in hz, the nutation freq)
pw90sl = 1/(4*tpwr_sl) Note 90 deg takes 1/4 of a full circle.
Then use the following equation to get spin lock power in dB
tpwr - 20.0*log10(pw90sl/pw90)
tpwr_sl: spin lock power in hz
tpwr: regular hard pulse power in dB
pw90: regular 90 deg pulse width
Make sure you understand what you are doing. Be very careful with spin lock.
It's one of the few things that can smoke the pro |
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y*****s
发帖数: 1047 | 3 pulse ON时间通过的离子会进入reflectron被检测，而inter pulse或者说pulse OFF时
间通过的离子不能进入reflectron不被检测，这个比例有多少？和频率高低无关，但是
对灵敏度很重要
如果数据传输速度不够快，那么被记录的数据占总数据的比例又是多少？0.05ms/50ms?
这个跟dwell time或者频率有关,而且对灵敏度很重要
如果trap扫描的时间是收集离子时间的十倍，那么跟QqQ比离子利用的效率只有不到1/
10了
但是如linear trap，容量比较大，可以把收集离子的时间提高到多少呢？
05ms
MS1+
level |
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d*******d
发帖数: 3382 | 4 I want to generate the time domain waveform samples
of square-root raised cosine pulse, which is used as the
transmitter pulse.
I find the function rcosflt() and use it as:
g=rcosflt([0;0;0;1;0;0;0],1,4,'fir/sqrt',r)
where r is the rolloff factor, and I set 4 samples per symbol.
change 4 to larger number and you will get more continuous
waveform.
When I set r=0.2, the waveform will goes to zero suddenly
after t>3T or 4T. I think sth is wrong, as the pulse is
freq domain limited, should be unlimi |
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w********u
发帖数: 90 | 5 wavelength 这么大，为啥pulse width 这么小？ 根据wavelength, 带宽估计是在1MHz
数量级，根据pulse width， 那么带宽1/pulse width 太大了吧， 估计没有啥示波器
可以搞出来啊 |
|
m****n
发帖数: 68 | 6 这个讨论好呀， 其实siegmann 的书的chapter9 写的很好， 只有没有chirp的pulse才
是transform limited， short pulse after fiber is highly chirped but the
spectrum should not change unless bandwidth limited or non linear effect for example self phase modulation etc. That can be easely acumulated by fs pulse in fiber. |
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n*l
发帖数: 44 | 7 if you want to convince yourself, you can try the follow methods:
- set your timing division to 1 sec/div (the point here is to make it large)
and do an auto, you should be able to actually see the screen scans from
left to right.
- feed a TTL pulse into Channel-1, but put the oscilloscope into edge-
trigger mode. Put your time cursor in the middle of the screen, then start
edge-trigger, lastly enable your TTL pulse, you'll see your TTL pulses are
to the right of the time cursor; to the left i |
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f******8
发帖数: 150 | 8 Under the supervision of VP, Chief Technical Officer, create and validate
large-signal non-linear models for range of RF power transistors. Initially,
models will be GaN but may eventually include LDMOS. The candidate must be
self-motivated and able to work independently with minimal supervision. The
candidate must be able to demonstrate a proven track-record in the
successful development of non-linear models for RF power transistors (
ideally GaN) with good agreement between modeled and measur... 阅读全帖 |
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p******9
发帖数: 114 | 9 1. A 5-year-old boy is brought to the physician 1 hour after urinating
bright red blood. He has been taking ibuprofen since injuring his right
flank while wrestling with friends yesterday; he also has been taking
penicillin for 3 days for streptococcal pharyngitis. His temperature is 36.7
C (98 F), blood pressure is 90/48mm Hg, pulse is 108/min, and respirations
are 18/min. Examination shows purple ecchymoses over the shins and right
flank; there is tenderness of the right costovertebral area. T... 阅读全帖 |
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l********y
发帖数: 2295 | 10 B1Q14. An 80-year-old man has had poor balance for 6 months. He has a
history of hypertension treated with hydrochlorothiazide. His blood pressure
is 136/86 mm Hg. Neurologic examination shows mild tremor of the hands when
his arms are outstretched and decreased vibratory sensation at the knees.
Deep tendon reflexes of the quadriceps and gastrocnemius-soleus muscles are
hyperactive. Babinski's sign is present bilaterally. He is unable to stand
with his eyes closed. Which of the following is most... 阅读全帖 |
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N******m
发帖数: 17 | 11 Sorry, I cannot type Chinese on thie computer.
Pulseless electrical activity
The first thing, the patient has NO pulse. However, cardiac rhythms still
present on the EKG monitor (It might be sinus rhythm, sinus brady or
different heart block or whatever).
It means although there is electrical activity on cardiac cells, the
electrical activity is not enough to induce the heart muscle's contraction
or even the contraction does happen, it is not enough to produce cardiac
output. Therefore, patient ... 阅读全帖 |
|
N******m
发帖数: 17 | 12 Sorry, I cannot type Chinese on thie computer.
Pulseless electrical activity
The first thing, the patient has NO pulse. However, cardiac rhythms still
present on the EKG monitor (It might be sinus rhythm, sinus brady or
different heart block or whatever).
It means although there is electrical activity on cardiac cells, the
electrical activity is not enough to induce the heart muscle's contraction
or even the contraction does happen, it is not enough to produce cardiac
output. Therefore, patient ... 阅读全帖 |
|
y*********m
发帖数: 33 | 13 大家给些思路吧，我能想出来的就只有用filter，但我不是统计背景的，所以真的不知道怎么用filter，大家谁能告诉一些用filter的细节，我将感激不尽，真的急啊。谢谢了
A data file contains time series energy consumption data for a home over a
one month duration sampled at 1 second granularity
Format - Each line contains a tuple , like
below:
1312182000,1322
1312182001,1322
1312182002,1328
...
The timezone is PDT and the energy readings are in Watts.
The Data:
This is aggregate energy consumption data for one home that contains the... 阅读全帖 |
|
y*********m
发帖数: 33 | 14 大家给些思路吧，如果能帮我回答，我将感激不尽，真的急啊。谢谢了
A data file contains time series energy consumption data for a home over a
one month duration sampled at 1 second granularity
Format - Each line contains a tuple , like
below:
1312182000,1322
1312182001,1322
1312182002,1328
...
The timezone is PDT and the energy readings are in Watts.
The Data:
This is aggregate energy consumption data for one home that contains the
following main appliances,
* Central AC 1 - The mo... 阅读全帖 |
|
I****a
发帖数: 407 | 15 This past Saturday with help from my volleyball teammates, we successfully
resuscitate a person with most likely a cardiac arrest on the court.
A mid age man who all of sudden collapsed on the court after playing for 2
hrs w/o any prodrome. I rushed by his side noticing him unresponsive, there
was no limb movement, his eyes were closed, there was no pulse at carotid. I
immediately gave him a chest thump and started CPR. In the mean while, my
teammates started secure his airway and started callin... 阅读全帖 |
|
I****a
发帖数: 407 | 16 This past Saturday with help from my volleyball teammates, we successfully
resuscitate a person with most likely a cardiac arrest on the court.
A mid age man who all of sudden collapsed on the court after playing for 2
hrs w/o any prodrome. I rushed by his side noticing him unresponsive, there
was no limb movement, his eyes were closed, there was no pulse at carotid. I
immediately gave him a chest thump and started CPR. In the mean while, my
teammates started secure his airway and started callin... 阅读全帖 |
|
m***f
发帖数: 1622 | 17 interesting research,
Fossil Evidence on Origin of the Mammalian Brain
science
05/20/2011 332: 955
Many hypotheses have been postulated regarding the early evolution of
the mammalian brain. Here, x-ray tomography of the EarlyJurassic
mammaliaforms Morganucodon and Hadrocodium sheds light on this history.
We found that relative brain size expanded to mammalian levels, with
enlarged olfactory bulbs,neocortex, olfactory (pyriform) cortex, and
cerebellum, in two evolutionary pulses. The initial puls... 阅读全帖 |
|
C******g
发帖数: 2930 | 18 PULSE
Pulse 4/23 Edition (free)
Join host Christina Lee for PULSE presented by the PlayStation Network. New
video arrivals include Quantum of Solace, political thriller Frost/Nixon,
Sci Fi Channel’s Caprica, and the latest season of MTV hit, The Hills. We
also take a look at the classic turn-based combat of Worms, the PixelJunk
Eden Encore expansion pack, and downloadable content for Cuboid.
File size: 193 MB (HD) 312 MB (1080)
Add-on Game Content
LittleBigPlanet Heavenly Sword Mini-Pack ($2.99) |
|
c**i
发帖数: 6973 | 19 Matt Ridley, For Democracy, Bet on Peas Over Pineapples. Wall Street Journal
, Apr 30, 2011.
http://online.wsj.com/article/SB100014240
52748704132204576285263320561604.html
Note:
(a) The article mentions "a fine new paper by Stephen Haber of Stanford and
Victor Menaldo of the University of Washington."
It is
Haber S and Menaldo V, Rainfall, Human Capital, and Democracy. Apr 2, 2011.
http://www.innovation.hoover.org/media/file/Haber%20and
%20Menaldo,%20Rainfall,%20Human%20Capital,%20Democracy%20A... 阅读全帖 |
|
c**i
发帖数: 6973 | 20 (1) 默瑟-, 澳议员呼吁阻止中国公司收购农田. VOA Chinese, June 30, 2011.
http://www.voanews.com/chinese/news
/20110630-China-Foreign-Investment.html
, which is translated from
Phil Mercer, Australia Urged to Protect Key Farmland from Foreign Buyers.
VOA, June 30, 2011.
http://www.voanews.com/english/news
/asia/Australia-Urged-to-Protect-Key-Farmland-from-Foreign-Buyers-124765804.
html
Quote:
"The Chinese state-owned mining company Shenhua Watermark Coal has purchased
large areas of coal-rich farmland in New South ... 阅读全帖 |
|
a***s
发帖数: 12296 | 21 据美国NBC报道，他们通过电话与枪手的父亲取得联系。枪手父亲称：“我们为整个事件道歉，对他（枪手）要采取的任何行动，我们事前一无所知。和整个国家一样，我们也感到非常震惊。” 枪手的父亲还表示，这一切与宗教没有任何关系。他补充说，自己的儿子之前在迈阿密看到有两个男人接吻，他感到非常愤怒。
相关新闻
央视新闻报道，据外媒援引美国佛罗里达州奥兰多市警方消息：奥兰多一家名叫“脉搏”的夜总会，当地时间12日凌晨，北京时间今天下午发生枪击事件，有人员受伤。当地媒体称，夜总会里有20人遭到枪击，目前枪手仍然在夜总会内并挟持人质，身上还可能绑有一枚炸弹。 一些伤者正在现场接受治疗。枪击事件目前仍未结束。
环球网援引法新社最新报道，奥兰多市市长表示，夜店枪击事件死亡人数已升至50人，另有53人受伤送医。
据美国哥伦比亚广播公司(CBS)报道称，执法人员已经确认了枪手的身份，为29岁的阿富汗裔美国人奥马尔·马丁(Omar Mateen)。
相关阅读
美夜总会枪击案致50死 系恐怖主义袭击
央视新闻#美国奥兰多枪击事件#【事件被定性为恐怖行动】美国佛罗里达州州长里克·斯科特表示，很明显这是一起恐怖行动。奥兰... 阅读全帖 |
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a***s
发帖数: 12296 | 22 奥兰多枪击案亲历者：就是砰，砰，砰！
据《奥兰多哨兵报》报道，当地时间6月12日凌晨，美国佛罗里达城市奥兰多同性恋夜总会“Pulse”发生大规模枪击事件，据警方通报的最新消息，目前事件已经造成大约20人死亡，伤者人数暂时无确切统计，有媒体报道称，事发时酒吧有大约100位客人，至少有42人受伤。奥兰多警方证实，枪手已经在凌晨被击毙。
Pulse酒吧自称是奥兰多“最火的同性恋酒吧”。在枪击发生的几个小时之前，该酒吧鼓励到场的客人们加入周六之夜的拉丁风情聚会。然而这些积极响应号召的酒吧客们却陷入了噩梦。
“就是砰，砰，砰！”到场的客人之一克里斯托弗·汉森这样说道。
里卡多·古内龙·阿莫多瓦（Ricardo Negron Almodovar）说当时他就身在酒吧，枪击大约在凌晨2点开始。他侥幸逃了出来。
“在舞池中和吧台区的人倒在了地上。一些离吧台和后门不远的人成功逃到了外面然后赶紧跑了，”里卡多在他的脸书主页中写道。
“我安全到家了，希望大家都能够平安回家。”
当时正和朋友在酒吧的安东尼·托雷斯（Anthony Torres）说，他一听到枪响就赶紧开车走了。“这枪声听起来不像是平常的手枪，像是... 阅读全帖 |
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l********k
发帖数: 14844 | 23 Photonuclear Physics when a Multiterawatt Laser Pulse Interacts with Solid
Targets
Phys. Rev. Lett. 84, 899–902 (2000)
When a laser pulse of intensity 10^19Wcm^-2 interacts with solid targets,
electrons of energies of some tens of MeV are produced. In a tantalum target
, the electrons generate an intense highly directional γ-ray beam that can
be used to carry out photonuclear reactions. The isotopes 11C, 38K, 62,64Cu,
63Zn, 106Ag, 140Pr, and 180Ta have been produced by (γ,n) reactions using
the ... 阅读全帖 |
|
c**i
发帖数: 6973 | 24 Tabassum Zakaria, US wants to talk outer space with China. Reuters, July 19,
2011.
http://www.reuters.com/article/2011/07/19
/us-usa-china-space-idUSTRE76I6F320110719
(to set the rules)
----------------------------------Separately
(1) Jeremy Page, China to Dive for Buried Treasures; Submersible is set to
hunt for valuable minerals in Pacific. Wall Street Journal, July 20, 2011
http://online.wsj.com/article/SB10001424052
702304567604576455930556290432.html
(US "in 1960 sent two men to the bottom ... 阅读全帖 |
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y***u
发帖数: 7039 | 25 美国同时签定了两个对立协约
直言了，2012-02-17
http://zhiyanle.blog.hexun.com/72883705_d.html 。
据美国农业部和行业的新闻公告说，本月15日，美国签定了两个规模贸易协议：
一个，是与中国代表团签定了中国将购买美国大豆的协议，市值为43亿美元或862万公
吨。美国大豆种植量中，大约94%为转基因品种，剩下的6%天然品种是给美国国内消费
者用的；因此，可以说，中国所签协议购置的是转基因大豆。
另一个，是与欧盟签定了天然有机食品作物贸易合作协议，推动双方天然有机生态循环
农业和及其食品供应的贸易往来。有关资料说，2010年，美国和欧盟国家的天然有机食
品作物市场贸易额为500亿美元。
简评：这是个很值得注意的鲜明对比。
从数量看，500亿美元是43亿美元的十倍多。欧美发达国家发展政策的实际重心所在是
不言而喻的：为自己而强化天然有机生态循环农业及其食品供应，同时，把“垃圾技术
”的转基因食品作物的出路放在对中国出口。这对比足够鲜明。
转基因食品作物属于“化工农业”的生产供应和市场消费，其产品不过是用转基因手段
把原来“外用”毒素农药改... 阅读全帖 |
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J*****l
发帖数: 252 | 26 China is closing to make its "人造太阳”
2013-01-06 — On Jan 5th, Heifei Insititute of Physical Science Chinese
Academy of Sciences (CASHIPS) announces that its “big science projects”:
EAST (Experimental Advanced Superconducting Tokamak) or so-called “
artificial sun” has obtained a significant experimental results. The
auxiliary heating neutral beam injection (NBI) system works successfully to
100 seconds long pulses hydrogen neutral beam extraction in the integrated
test platform, initially verify ... 阅读全帖 |
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G***G
发帖数: 16778 | 27 Sound travels long distance underwater.
The pulse haixun-1 detected was from a far-away black box.
Since it is long distance, the detect duration is short.
Any one has the detailed GPS point of the two pulses detected by Ocean
Shield? |
|
s*******e
发帖数: 1395 | 28 33.331KHz (detected) / 37.5KHz(nominal) * 1.106 (actual pulse interval) / 1
(nominal pulse interval) = 0.983
基本上可以确定是马航了。 |
|
g******o
发帖数: 4042 | 29 Houston said data analysis of the first two acoustic signals established
that the pulse was not of natural origin, and more likely from a flight data
recorder.
"The analysis determines that a very stable distinct and clear signal was
detected at 33.331 kHz and that it consistently pulsed at a 1.106 second
interval.
"They therefore assessed that the transmission was not of natural origin and
was likely sourced from specific electronic equipment.
"They believe the signals to be consistent with the... 阅读全帖 |
|
b***2
发帖数: 348 | 30 外行，但是联系上下文，30fs是他们的目标吧。越短越牛b？
The High Repetition Rate Advanced Petawatt Laser System (HAPLS) will deliver
peak powers greater than one petawatt (10^15 watts) at a repetition rate of
10 Hz and pulse lengths of 30 fs. (The Texas Petawatt Laser at the
University of Texas at Austin, in comparison, the most powerful research
laser operating today, features pulse lengths of 167 fs in duration.)
comparison |
|
|
z*******n
发帖数: 444 | 32 On June 12, 2016, Omar Mateen, a 29-year-old American security guard, killed
49 people and wounded 53 others in a terrorist attack—also considered a
hate crime—inside Pulse, a gay nightclub in Orlando, Florida, United States
. He was shot and killed by Orlando police after a three-hour standoff.
Pulse was hosting Latin Night and most of the victims were Hispanic. It was
both the deadliest mass shooting by a single shooter and the deadliest
incident of violence against LGBT people in U.S. history... 阅读全帖 |
|
f***y
发帖数: 4447 | 33 http://bbs.netbig.com/thread-2702025-1-2.html
一期9篇研究性文章，1/3是科大的，郭光灿组两篇，潘建伟组一篇
另外在news and views还有一篇点评潘建伟的工作
etters
Experimental investigation of the no-signalling principle in parity–time
symmetric theory using an open quantum system - pp642 - 646
Jian-Shun Tang, Yi-Tao Wang, Shang Yu, De-Yong He, Jin-Shi Xu, Bi-Heng Liu,
Geng Chen, Yong-Nan Sun, Kai Sun, Yong-Jian Han, Chuan-Feng Li & Guang-Can
Guo
doi:10.1038/nphoton.2016.144
The violation of the no-signalling principle — information can be
tr... 阅读全帖 |
|
d*****u
发帖数: 17243 | 34 美国的诉讼文化
https://www.yahoo.com/news/pulse-nightclub-shooting-survivors-sue-orlando-
police-164028045.html
ORLANDO, Fla. (AP) — Almost two years after a massacre at an Orlando
nightclub left 49 people dead and 53 injured, some of the surviving victims
were filing a lawsuit in federal court Thursday saying the city and police
didn't do enough to try to stop the shooter.
More than 35 victims have signed on as plaintiffs, accusing the city and its
officers violated the Constitutional rights of those ... 阅读全帖 |
|
|
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s*****n
发帖数: 1998 | 37 I Have a Rendezvous with Death
By Alan Seeger
I have a rendezvous with Death
At some disputed barricade,
When Spring comes back with rustling shade
And apple-blossoms fill the air—
I have a rendezvous with Death
When Spring brings back blue days and fair.
It may be he shall take my hand
And lead me into his dark land
And close my eyes and quench my breath—
It may be I shall pass him still.
I have a rendezvous with Death
On some scarred slope of battered hill,
When Spring comes round again this y... 阅读全帖 |
|
a***e
发帖数: 27968 | 38 that is 10s MJ energy already.
where does the energy come from?
maybe if they do it right, they could compress a ns pulse to a ps pulse at
100km?
但这个强度远不够电离空气的。
，居然和毛子学，搞以大为美的暴力美学。丫的，太浪费能源，太不环保了。 |
|
g**1
发帖数: 10330 | 39 我共的进度如何？
Raytheon Awarded Naval Power System Contract
$10 million system will power future weapons
TEWKSBURY, Mass., Jan. 30, 2012 /PRNewswire/ -- Raytheon Company (NYSE: RTN)
has been awarded a $10 million contract from Naval Sea Systems Command to
develop a pulsed power system that will enable projectiles to reach great
distances without the use of an explosive charge or rocket motor.
The contract for the preliminary design of a Pulse Forming Network (PFN) is
part of a larger effort by the U.S... 阅读全帖 |
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m***s
发帖数: 1094 | 40 真是太搞了，原来说是给华尔街把钱都掳走了，现在刚刚开始管理这个"占领华尔街运
动"的经费就马上也从99%变成1%了...
http://www.nypost.com/p/news/local/manhattan/they_want_lice_of_
From the article:
"Occupy Wall Street’s Finance Committee has nearly $500,000 in the bank,
and donations continue to pour in -- but its reluctance to share the wealth
with other protesters is fraying tempers.
Some drummers -- incensed they got no money to replace or safeguard their
drums after a midnight vandal destroyed their instruments Wednesday -- are
threatening to sp... 阅读全帖 |
|
H**U
发帖数: 1814 | 41 Really? I thought only size of d@ck matters to Female.
"It's easy to imagine that we humans might also prefer multitasking partners
, such as someone who can successfully earn a good income, cook dinner,
manage the finances and get the kids to soccer practice on time," Ward said
in a news release.
============
Female frogs choose to mate with males that can multitask, a new study
reported.
The study supports the multitasking hypothesis, according to which females
prefer males that can manage man... 阅读全帖 |
|
g********2
发帖数: 6571 | 42 Omar Mateen called the cops to pledge his fealty to ISIS as he was carrying
out his mass murder in Orlando early Sunday. Twelve hours later, the
president of the United States declared that “we have no definitive
assessment on the motivation” of Omar Mateen but that “we know he was a
person filled with hate.”
So I guess the president thinks Mateen didn’t mean it?
Here again, and horribly, we have an unmistakable indication that Obama
finds it astonishingly easy to divorce himself from a reality ... 阅读全帖 |
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l******a
发帖数: 10467 | 43 那我就讲讲吧， 当你讲warp的表象是pulse， vibrate， 不可能有奇怪的声音的时候
我就知道你其实不知道warp的真正原因， 你看的东西都是网上随便google来的， 就拿
你口中说的scottykilmer来说吧， 我曾经发信问过他， 这个是scotty前面一段时间对
我一个关于噪音的回答“replace the rotors, they are too cheaply made to
resurface them and often warp.”， 另外你不了解warp形成的原因， 就张口就来，
我建议你先看一下stoptech上对于rotor warp的解释， 那里讲的比较令人信服， 至
于链接， 你自己随便一找就能搜到了， 至于warp噪音的解释和表象， 我建议你看一
下g-w training系列中auto brakes的解释， 作为一个工科的， 我们不是专业修车的
， 许多情况没有碰到是正常的， 我们不是专业修车的， 这个东西是需要经验的积累
， 但是有许多基本点是相同的， 就是了解原理以后可以有正确的思路去解决问题，
举个简单的例子， bedding in的时... 阅读全帖 |
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t******a
发帖数: 1200 | 44 Prius 省油关键靠的是 Pulse & Glide 大法，不是降速。
priuschat 论坛里的大神们可以用 Pulse & Glide 大法开到
70 mpg+ |
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g********d
发帖数: 19244 | 45 ☆─────────────────────────────────────☆
wila1012 (wi2la) 于 提到:
上班地方比较远，和LP一起carpool，每天开freeway, 来回整100mile，还不包括周末
！3个月不到就要换次机油。。。现在想换车。
我知道Prius肯定省油，但是不知道这个车子耐操不？ 开个15w mile左右行么？有这车
的朋友，每次在dealer换机油多少钱？
还有听说现在plug in 的版本有政府补助,和绿色carpool贴纸，是不是真的？ 什么时
候到期？
谢谢啦！
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那请你们推荐一下什么车好啊？ 我家里已经有SUV了，另外我不买美国车的，德国豪华车
也还买不起~ 我LP现在喜欢Mini 的countryman,怎么样呢？
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都怪... 阅读全帖 |
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W***n
发帖数: 11530 | 46 The BMW Ultimate Driving Experience is coming to a town near you and you don
’t want to miss our exhilarating Autocross course!
In this challenging 2-hour closed-course driving session, push a legendary 3
Series and agile 4 Series or an unmistakable X4 to its limits while
simultaneously raising your pulse. With a BMW Professional Driving
Instructor at your side, you’ll learn advanced driving theory and defensive
driving techniques, and enjoy pulse-pounding laps around the track.
Preview an onsit... 阅读全帖 |
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p*********e
发帖数: 32207 | 47 How Much Will a Laser Jammer Cost Me?
For a typical mid-sized passenger car, a good laser jamming system starts
off around $600. Before you do decide to make the investment, however, there
are two important things to research: How often does the jammer
manufacturer offer updates to its firmware? And what is the jammer's ability
to jam the new pulse-rate and random-pulse-rate laser guns, such as the
DragonEye?
http://www.autoblog.com/2015/11/10/laser-jammer-basics-explained/ |
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p****e
发帖数: 607 | 48 Reebok® Competitor RT 5.1 SpaceSaver® Treadmill for sale.
Bought new in November at costco, already assembled, barely used. Ask for $500
Location: near JFK library.
Product information:
Get in shape fast with the Reebok® Competitor RT 5.1 Treadmill.
Featuring iFit® Workout Card Technology, this treadmill delivers 8
weeks of weight-loss training with audio coaching and automatic speed and
incline controls. The included weight-loss card plugs directly into the
console to give y... 阅读全帖 |
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D****9
发帖数: 10889 | 49 恶寒天气令交通瘫痪，将人们纷纷留在家中，受免费送货服务增加以及大量在线交
易的吸引，网络销售成了最大的受益者之一。彭博社引述一个调查公司的报告称，在今
年圣诞季，美国网络销售额蹿升了15%。
总部在纽约的零售调查公司Spending Pulse发布报告称，从今年10月31日开始的圣
诞季，网络销售额达到了364亿美元，去年同期为315亿美元。网络服装销售增幅达到26
%，增速位列第一，电子产品增长12%，百货则增长11%。
“今年圣诞季有6天的单日网络销售额超过了10亿美元，比去年翻番。”Spending
Pulse副总裁马克纳拉称，这意味着网络销售在人们消费方式中的比例大幅上升。他称
，根据调查，目前各种领域的消费都出现了明显回升，这也是过去3年来，美国市场首
次迎来较为正常的圣诞季消费。该机构还表示，除去汽车和天然气，网络销售目前约占
所有零售销售的10%。 |
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D**s
发帖数: 6361 | 50 美国《People》杂志周一引述联邦执法部门人士消息，马丁4月与妻子萨曼（Noor Zahi
Salman）去过位于迪士尼世界。萨曼周日向联邦当局透露，马丁最近视察过迪士尼市
集（Downtown Disney）和同志夜店Pulse，准备施袭。
马丁最后选择到Pulse施袭，杀了49人后，被警员击毙。
最近改名迪士尼之泉（Disney Springs）的迪士尼市集，是迪士尼世界（Walt Disney
World）的餐饮购物区，入场前毋须安检和查袋。
迪士尼世界的神奇王国（ Magic Kingdom）、Animal Kingdom（动物王国）、
「未来世界」(Epcot)、「荷李活影城」(Hollywood Studios)等，去年起安装金属探测
器，游客亦须接受随机筛检。 |
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