【天天来听写415重新开张】TOEFL集结号，欢迎大家参加

touchanceUID: 2604018

Why aren't there more women physicists and in senior positions? one factore maybe unconcious biases that could keep woemen physicsis from advancing and may even prevent women from going into physics i ...
longxue26 发表于 2010-8-4 11:23

Grants不是津贴的意思，科学类研究的Grant就是研究基金。

hardtripUID: 2765231

0802


As many of us broil on August heat, the Mars rover Spirit is hankered down to survive a far more brutal season, a Martian winter. Spirits has been on Mars since January 2004 and already survived previous winters which ran from May through November.
With sunlight reaching Spirit at a weak angle, the rover hibernates and uses the scant solar power to recharge batteries and heat itself to minus 40 degrees, at least that's what happened in previous winters. This winter, the game  little unit just doesn't have enough juice to keep its heaters on. So temperatures inside the rover were plunge to a frigid minus 67 degrees Fahrenheit, when NASA scientists began signaling Spirit on July 26. They hope to receive a communications beep back, but so far there's only silence. The researchers say that in about 2 months, sunlight will start to increase again through March 2011. If we haven't heard Spirit by that point, then the likelihood is that we never will. The rover was designed to work on Mars for 3 months, but was mobile for more than five years. Now mission scientists wait through the Martian winter to see if this ET will phone home.

jiang08UID: 2391146

8/4：Hot Peppers' Capsaicin Helps Hypertensive Rats

sa_d_podcast_100804.mp3 (1.14 MB, 下载次数: 113)

2010-8-5 09:20:40 上传

下载次数: 113

原文，选中可见：
Here’s a possible blood pressure remedy. But it’s only for those who can stand the heat. It’s capsaicin, the “active ingredient” in peppers like habaneros that should probably be sold by prescription only. While lips burn and eyes water, blood vessels actually relax, thanks to increased production of the signaling molecule nitric oxide. In rodents, anyway.

For seven months, researchers in China fed a steady diet of capsaicin to rats bred to be hypertensive. Long-term consumption of the chemical substantially lowered the rats’ blood pressure. The results appear in the August issue of the journal Cell Metabolism.

Previous research found mixed results with capsaicin, but those studies only looked at short-term effects. Human trials are needed, but there’s already a clue. Some 20 percent of people in northeastern China have high blood pressure. But the southwest—where hot peppers are a dietary staple—has a much lower incidence, half in some places.

Human studies could also confirm whether the habanero, as legend has it, can cause hearing loss. Allegedly so that diners don’t have to listen to their own screams.

longxue26UID: 2687755

Here is a possible blood pressure remedy, but it's only for those can stand the heat. It's capsaicin, the active ingredient in peppers like habaneros that should probably be sold by prescription only.
While lips burn and eyes water blood vessels actually relax. Thanks to increase the production of signaling molecule nitric oxide in rodents, anyway. For 7 months, researchers in China fed a steady diet of capsaicin to rats bred to be hypertensive. Long term consumption of the chemical substantially lower the rats' blood pressure. The results appear in the August issue of journal cell metabolism.
Previous researchers found mixed results with capsaicin, but those studies only looked at short term effects. Human trials are now needed but there's already a clue. Some 20% of people in Northeastern China have high blood pressure. But the southwest where hot peppers are a dietary staple has a  much lower incidence, half in some places.
Human studies could also confirm whether the habanero as legend has it can cause hearing lose. Allegedly so that the diners don't have to listen to their own screams.

满山飘红啊!!!:mad:
单词
nitric oxide -- 氧化氮
habaneros=hot peppers -- 小辣椒
capsaicin --- 辣椒素
dietary staple -- 主食
incidence -- 发生率
allegedly --- 据称 依其申诉

婧榭居士UID: 2852563

317# jiang08
哦。谢谢08~

hardtripUID: 2765231

0804

Here is a possible blood pressure remedy, but it's only for those can stand the heat. It's Capsaicin, the active ingredient in peppers like habaneros, that should probably be sold by prescription only. Well, lips burn and eyes water, blood vessels actually relax, thanks to increase the production of the signaling molecule nitric oxide in rodents anyway. For seven months, researchers in China fed steady diet of Capsaicin to rats bred to be hypertensive. Long-term consumption of the chemical substantially lowered the rats' blood pressure. The results appear in the August Issue of the Journal Cell Metabolism.

Previous research found mixed results with Capsaicin, but those studies only looked on the short-term effects. Human trials are now needed, but there is already a clue. Some 20 percent of people in Northeastern China have high blood pressure. The Southwest where hot peppers are a dietary staple has much lower incidence, half in some places. Human studies could also confirm whether the habaneros, as legend has it,  can cause hearing loss. Allegedly so that dinners don't have to listen to their own screams.


It's a tough task, not so easy.

婧榭居士UID: 2852563

5/Aug


8/4：Hot Peppers' Capsaicin Helps Hypertensive Rats
Here’s a possible blood pressure remedy. But it’s only for those who can stand the heat. It’s capsaicin, the “active ingredient” in peppers like habaneros that should probably be sold by prescription only. While lips burn and eyes water, blood vessels actually relax, thanks to increased production of the signaling molecule nitric oxide. In rodents, anyway.
For seven months, researchers in China fed a steady diet of capsaicin to rats bred to be hypertensive. Long-term consumption of the chemical substantially lowered the rats’ blood pressure. The results appear in the August issue of the journal Cell Previous research found mixed results with capsaicin, but those studies only looked at short-term effects. Human trials are needed, but there’s already a clue. Some 20 percent of people in northeastern China have high blood pressure. But the southwest—where hot peppers are a dietary staple—has a much lower incidence, half in some places.
Human studies could also confirm whether the habanero, as legend has it, can cause hearing loss. Allegedly so that diners don’t have to listen to their own screams.
allegedly adv. 1. 依其申述2. 据传说,据宣称

dietary adj. 1. 与饮食有关的;饮食的

n. 1. 饮食的规定

substantially adv. 1. 本质上,实质上;大体上2. 相当多地,大大地

metabolism n. 1. 新陈代谢

habanero 小辣椒
rodent n. 1. <动>啮齿目动物
capsaicin 辣椒素

hardtripUID: 2765231

0728

Spend any time in a bar, and sooner or later, you'll hear all have what she is having. It sounds a bad pickup line, but there may be an actual biological basis for this kind of alcohol copycat behavior. Because scientists have found that having the genes for a certain dopamine receptor could predispose you to being influenced by the sight of other people drinking.

Volunteers were ushered in a lab, set up to look like a pub. They were asking to do some busy work, then told that during the break, they should help themselves to some beverages. While they watched, shills planted by the scientists immediately liquored up. The study subjects were then tracked to see how much they drink after watching others toss'em back. When the plants could be seen having just one drink, all the subjects drank similar amounts. But when the plants had at least three drinks, some participants drank twice as much as others. And DNA tests show that heavier drinkers had a particular variant of dopamine receptor called DRD4. The work appears in the journal Psychological Science. Next, the search for genes that make people order drinks for those little umbrellas.

hardtripUID: 2765231

0729

What's in a neck? Well, it's a good place to hang a pendent or tie. Or to rest your head? Now scientists say that by separating our heads from our bodies, the neck gave our brains a leg up revolution. Their findings appear in the online journal Nature Communications.

Not all animal have legs, a fish's head is pretty much continuous with its body. And a fish gets around just fine. Nerves based in the fish's brain instruct its fins to move and off it goes. But something happen when our aquatic ancestors first slithered onto the land. The source of the nerve cells that power the animals' forelimbs shifted from the brain down to the spinal cord, that move allow the body to grow more distant from the head, taking the arms with it. And so the neck was born.

That neck say the scientists, was more than just a way to keep the head off the shoulders. The anatomical relocation improved dexterity by leaving the arms free to move in new ways. And the resulting flexibility helped shape the revolution of our heads and our hands. And how we use them together to do all sort of nifty things like tie a perfect Windsor knot.

hardtripUID: 2765231

0727

Have you ever bought an electronic device or tried a new activity, and then dropped it because you were sure you couldn't possibly master it. Well, don't give up so quickly. Researchers performed six experiments that involved subjects trying out new tasks, including drawing an image from looking at its reflection in a mirror and learning to type a new kind of keyboard. The participants were first asked how long it would take them to learn the task. They tended to be overconfident and thought they'd do better on the first try than they actually did. Then after trying, they were asked how quickly they'd become good at it. But this time, they were pessimistic and thought it'd take longer to learn than they actually did. The study is in the journal of Consumer Research.


The findings are relevant because many new consumer goods are quickly tossed aside. It could be because people initially think that their fancy new MP3 player will be easy. Then after the try, they are sure they will never be able to master it. So you will be able to ski or use that iPad later than you expected, but sooner than you think.

hardtripUID: 2765231

0726

You'd think that animals that hops, would know how to land, but for a kind of frog, that's not the case. Imagine trying to catch a frog, you reach and they jump, only to land gracefully on their feet a few feet away. It was thought that all the frogs move this way. They'd push off their back legs and then once in flight rotate the limbs forward, and they landed their forelimbs first. But researchers compared frogs of the family Leiopelmatidae which still sport an ancient physiology to two more modern frog's species. Unlike the more graceful cousins, the primitive frogs kept their back legs straight out after they jumped. So they don't land their feet, instead, they do an ungainly belly flop and then struggle to get their feet and jump again. The finding is in the journal Naturwissenschaften.

The scientists say that the back legs push off must have evolved first, with the ability to rotate and land softly evolving later. Although the bad landers are still around, there're more controlled relatives appeared to be better at making long trips foraging for food and most importantly avoiding other animals that have an interest in frog legs for dinner.

Come on, encourage myself to persist !

hardtripUID: 2765231

As many of us broiling in August heat, the Mars Rover Spirit is hunkered down to survive a far more brutal season-- a Martian Winter. Spirit’s been on Mars since January 2004 and already survived pre ...
longxue26 发表于 2010-8-3 10:41

Juice --- 个人理解，此处并不是电流的含义。

我们知道电池内部靠的是电解质溶液的电子转移形成电流，这里是说电池内部的溶液不足够，从而无法供电使heaters工作。
所以，juice还是类似“汁”的含义，只不过是说电解质溶液，个人理解，仅供参考。

hardtripUID: 2765231

301# longxue26

我也是根据文章推测的意思，因为‘toss down’ 有 （倾杯）一口喝下的意思

toss 'em back 出现的地方是在讨论他们的引导实验，所以推出应该跟喝酒有些关系吧

大家有什么意见，分享一下啊!
friendjihao 发表于 2010-8-1 15:30

其实我觉得就是前面讲的“一饮而尽”之意。
toss 'em back 就是toss them back 的缩写，其中them 是指酒。
toss back 这个词组的意思是 throw back: throw back with a quick, light motion; "She tossed back her head"

还能查到相关的句子，比如 Maybe, I should toss back a couple of cocktails.

hardtripUID: 2765231

Have you ever bought a new electronic device or tried a new activity, and then dropped it because you were sure you couldn't possibly master it? Well, don't give up so quickly.
Researchers performed  ...
Santon 发表于 2010-7-29 20:34

The findings are relevant because many new consumer goods are quickly tossed aside. It could be because people initially think that their fancy new MP3 player will be easy. Then after the try, they are sure they will never be able to master it. So you will be able to ski or use that iPad later than you expected, but sooner than you think.

这句话是讲：人们一开始总以为他们刚买的时兴MP3播放器非常简单好用，然而在尝试某些功能后，他们相信他们永远不会掌握那个播放器（因为某些功能并不是他们想象得那么容易操作，也是为什么many new consumer goods are quickly tossed aside 的原因。）。

touchanceUID: 2604018

Aug, 4th

Hot Peppers' Capsaicin Helps Hypertensive Rats

Here's a possible blood pressure remedy, but it's only for those who can stand the heat. It's Capsaicin, the active ingredient in peppers like habaneros that should probably be sold by prescription only. While lips burn and eyes water, blood vessels actually relax. Thanks to the increasesd production of the signalling molecule, nitric oxide, in rodents anyway. For seven months, researchers in China fed a steady diet of Capsaicin to rats bred to be hypertensive. Long-term consumption of the chemical substantially lowered the rats' blood pressure. The results appear in the August issue of the journal Cell Matabolism. Previous research found mixed results with Capsaicin, but those studies only looked at the short-term effects. Human trials are now needed but there is already a clue. Some 20% of people in Northeastern China have high blood pressure. But the southwest, where hot peppers are a dietary staple, has a much lower incidence, half in some places. Human studies could also confirm whether the habanero, as legend has it,  can cause hearing loss, allegedly so that the diners don't have to listen to their own screams.

囧啊，hebanero是西班牙词，所以此人就省读了h...habana就是哈瓦那。只知道jelapeno的人飘过~
另外， thanks to the increased那句也忒快了吧，而且signalling说的也很不清楚，rodents的d缩音orz...