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莱山吸脂整形哪家医院好青岛滨州激光祛痣哪家医院好As the universe continues to dance to its ancient rhythm,随着宇宙继续沿着古老的节奏发展stars will come and go in a relentless cycle恒星将进入一个永不间断的循环and because there are hundreds of billions of stars,而正因为有着上千亿颗恒星there is always one dying in the supernova somewhere.总有一颗在超新星爆发中消亡In our galaxy for instance,比如在系中a star dies every 50 years or so,大约每50年就有一颗恒星消亡which is but the briefest of moments to the universe.这对于宇宙来说只是短短的一瞬Its just about conceivable that a supernova could damage the Earth,如果你从长远的角度看,不难想象得到if you consider the likelihood over a long enough time scale.超新星爆炸会对地球造成破坏One kind of supernova discovered一类偶然被发现的超新星爆炸entirely by accident is thought to be particularly dangerous.是极具危险性的In 1967, when the cold war was at it hight,1967年,冷战进入白热化阶段时US military satellites picked up美国军事卫星探测到a massive burst of something called gamma radiation.一组名为伽马射线的大爆发Gamma radiation is the most dangerous type of radiation known.伽马射线是已知辐射中最危险的Its also the tell tale sign of an atomic weapon这也能明显显示出使用核武器的迹象whether the gamma rays detected这组伽马射线能不能evidence of a new and powerful Soviet bomb,明苏联具有新型大杀伤力炸弹呢thankfully the answer was no.还好是,不能After careful analysis of the data,经过仔细的数据分析they discovered that the sudden bursts of gamma rays他们发现伽马射线的突然爆发were actually coming from space.实际上来自太空Not even the Russians had that kind of technology.即便是当时的俄罗斯也不可能具备这种技术Decades later, we still dont have proof of几十年后的今天,我们依然不知道what causes the bursts of radiation.是什么产生了辐射的爆发But there is a well-respected theory但有一个被高度重视的理论that they are produced by a special kind of supernova,说它们源自一种特别的超新星爆发called a gamma ray burst.伽马射线暴Whats more, there might be one quite nearby.而且有一个伽马射线暴可能存在于地球附近Hidden within this massive spiral plume of plasma,隐藏在巨大的漩涡状等离子群中8,000 light years from Earth距离地球八千光年的地方is a star called WR 104.有一颗被称作WR 104的恒星Deep inside the star itself is a bright sphere,这颗恒星的内部深处是一个明亮的球体throwing off a shell of hot gas as it nears its end.在生命的尽头,它向外抛射出炙热的气体外壳201510/403065青岛牙齿畸形怎么办 In fact,scientists have aly discovered that our decision to do something...事实上 科学家已经发现 当我们决定做某件事Can be affected by many things. Not least,electricity.会被许多因素影响 尤其是电流Now,I do hope youre not squeamish...我希望你不会觉得太恐怖But lets imagine watching a surgical procedure called:但现在我们来想象我们正在目睹一种Awake Brain Surgery.;清醒开颅手术;的外科手术Its used to treat Neurological disorders.这种手术曾用来治疗神经疾病The brain is exposed and stimulated with electrical probes.开颅后露出大脑 并用电探针刺激The urge to move... a foot,hand or face想要移动脚 手或脸的行动can be artificially triggered by electrically exciting只要用电流刺激大脑的适当部位appropriate regions of the brain.便可人工触发All it takes is about 3.5 volts in the right place.这一切只需在正确位置用3 5伏特的刺激The patient may ;think; he has made a choice患者可能以为是自己做了决定but in fact,the surgeon made it for him.但其实是外科医生替他决定的We can imagine a future where advanced technology could allow the doctor我们能想象未来先进的科技 让医生能to control someones thoughts.控制一个人的想法Perhaps even make them fall in love.也许甚至能让他们坠入爱河The unfortunate subject would believe he was acting out of free will这位不幸的实验品还可能相信他是出于自由意志But the opposite would be true.但事实却正好相反Its all just physics in the brain.这一切都只是大脑里的物理现象201602/425782When it comes to household versatility, baking soda is king. Here are just some of the many cleaning uses for sodium bicarbonate.在家居用途方面,小苏打就是王者。下面是小苏打的几种清洁用途。You Will Need你需要Baking soda小苏打Water水A sponge海绵A vacuum吸尘器Salt盐White vinegar白醋Laundry detergent洗衣粉A cotton swab棉花棒A toothbrush牙刷A bowl碗Steps步骤STEP 1 Remove stains1.去污Get rid of stains on countertops, sinks, bathtubs, and any nonporous surface you can think of with a paste of three parts baking soda to one part water. Apply the paste to a damp sponge, scrub away, and rinse.三份小苏打和一份水混合制成膏体,清除厨房工作台面,水槽,浴缸和任何你能想到的无孔的表面的污渍。把膏体涂在湿润的海绵上,擦拭,清洗。Baking soda works well on metallic surfaces, like chrome or stainless steel. It won’t scratch the surface, but it’s abrasive enough to remove residue and leave the metal shining.小苏打用在金属表面效果也很好,比如铬合金和不锈钢。不会刮花表面,但是其研磨作用足以清除污垢残余,散发出金属的光。STEP 2 Reduce odors2.除异味An open box of baking soda in the refrigerator or a cupboard will absorb odors and excess moisture. A sprinkle in shoes and socks helps reduce foot odor. To combat a stinky carpet, drizzle with dry baking soda and vacuum it up after 15 minutes.在冰箱或衣柜中放一盒开盖的小苏打可以吸收异味和潮湿。在鞋袜里洒一点小苏打可以除脚臭。如果地毯有异味,可以先撒一些小苏打,15分钟后用吸尘器清洁。Using a bowl instead of an open container is more effective because more baking soda is exposed.用碗比用开口的容器更有效果,因为碗的开口比较大,容易使更多小苏打暴露在空气中。STEP 3 Deter ants3.防蚂蚁Ant infestation? Sprinkling equal parts baking soda and salt near high-traffic ant areas will keep them in their place.蚂蚁横行?在蚂蚁出没的通道上撒等量的小苏打和盐,会让他们不敢前来。STEP 4 Unclog drains4.疏通下水道Pour half a cup of baking soda into a clogged drain, followed by a cup of white vinegar. Let the solution bubble for a few minutes, and then flush it down with plenty of hot water. This method won’t clear heavy-duty clogs, but it works well for minor ones.向堵塞的下水道中倒入一杯小苏打,然后倒入一杯白醋。让溶液反应几分钟,然后用足够的热水冲洗。这种方法不能清理堵塞严重的下水道,但是对于轻微的堵塞非常有效。STEP 5 Keep laundry bright5.保持衣物鲜亮Add a half-cup of baking soda to a load of wash along with your regular detergent. It helps keep clothes brighter, longer.向衣中倒入半杯小苏打和普通洗衣粉。可以让衣物更长时间保持鲜亮。STEP 6 Wash brushes and combs6.清洗刷子和梳子To remove oil and dirt from hairbrushes and combs, first remove excess hair; then soak in a tall container of warm water with a teaspoon of baking soda.要清洁发刷和梳子上的油和污垢,首先除掉脱落的头发,然后浸泡在装有温水和一茶匙小苏打的较高的容器中。STEP 7 Reduce bug-bite itch7.缓解蚊虫叮咬瘙痒To reduce itching, mix baking soda with just enough water to make a paste, and apply it with a cotton swab to the bug bite. The paste can also help relieve a painful sunburn.要缓解瘙痒,将小苏打和足够的水混合制成膏体,然后用棉花棒涂在叮咬处。膏体还可以缓解阳光晒伤。STEP 8 Whiten your teeth8.美白牙齿Sprinkle a small amount of baking soda onto a wet toothbrush to clean and whiten your teeth naturally. Practice this method sparingly, as it will wear down your enamel if used too often.向湿润的牙刷上撒少量小苏打,可以天然清洁和美白牙齿。偶尔使用这种方法,经常使用会损坏牙釉质。In 2007, a company unveiled a process that converts harmful carbon dioxide emissions from smokestacks into consumer-grade baking soda.2007年,一家公司披露了一种程序,可以将烟窗中的有害二氧化碳转化为消费者使用级别的小苏打。 视频听力译文由。201503/366993山东青岛诺德医院激光去痘手术多少钱

青岛口腔矫正多少钱青岛微整哪家好 The educational materials presented here今天展示的教育材料were developed by students and faculty是由爱荷华州立大学营养学of the department of food science and human nutrition和人体营养学系的at Iowa State University.学生和老师提供的Funding for this project was provided by grants该项目的资金由from the American Cancer Society Mid West美国中西部地区癌症协会and the Lance Armstrong Foundation.及兰斯,阿姆斯斯壮基金会提供The materials are intended for educational use这些材料仅用于教学and are not meant to provide medical advice.并非用以提供医疗指导We welcome your feedback about these materials.欢迎大家对这些材料做出反馈Please use the evaluation survey link on the homepage请用主页上提供的调查评价链接to provide your comments and suggestions.提交你们的和建议Protein. During this presentation we will talk蛋白质,在今天的演讲中我会讲about many aspect of protein, from why we need it蛋白质的很多方面,包括从我们为什么需要蛋白质to tips on how to make good choices.到如何做明智选择的忠告To begin, proteins are made up of amino acids.首先,蛋白质由氨基酸组成Different amino acids come together不同的氨基酸合在一起to form different types of protein.能够形成不同的蛋白质Protein is needed in the body for many reasons,身体需要蛋白质的原因很多most commonly for growth as well as最常见的是为了促进成长以及tissue replacement and maintenance.替换或维护组织As previously mentioned, proteins are made up of就像之前提到的,蛋白质由amino acids. There are 2 types of amino acids;氨基酸组成,有两类氨基酸essential and non essential.必需氨基酸和非必需氨基酸True to their names, non essential amino acids就像它们名称一样,非必需氨基酸can be synthesized by your body可以由身体本身合成and therefore it is not essential to get them因此不必通过from your daily diet.日常膳食摄入The other type of amino acids are essential另一种氨基酸是必需氨基酸which means it is necessary to意味着必须get them from your diet.从饮食中摄入氨基酸Taking what weve learned about essential考虑到我们对必需氨基酸and non essential amino acids,和非必需氨基酸的了解we can now discuss 2 more categories of protein.我们可以讨论另外两种蛋白质The categories are complete and incomplete proteins.即完全蛋白质和不完全蛋白质A protein is considered complete when it contains一种蛋白质属于完全蛋白质,是因为它含有all of the essential amino acids.所有的必需氨基酸Common sources of this type of protein这类蛋白质通常可以从are animal sources such as meat and milk.动物身上获取,例如肉类或者奶制品Incomplete proteins therefore are proteins因此不完全蛋白质就是那些that lack one or more of the essential amino acids.缺少一种或多种必需氨基酸的蛋白质Common sources of this type of protein这类蛋白质通常来源于are most vegetable proteins.蔬菜蛋白质Another type of protein that also exists还有一种蛋白质are complementary proteins.叫做互补蛋白质Complementary proteins consist of 2 or more互补蛋白质由两种或多种incomplete proteins that when mixed together不完全蛋白质组成,当混合在一起时form a complete protein.两种不完全蛋白质可以合成一种完全蛋白质A classic example of this is rice and beans.一个经典的例子就是大米和黄豆Separately they lack specific amino acids分开时二者都缺一种必需氨基酸that are necessary but together they provide但合在一起时它们可以形成a complete protein.一个完全蛋白质Protein is found in many foods,许多食物中都含有蛋白质all foods made of meat, protein and fish肉类,蛋白质类和鱼类食品中contain protein as well as other sources都含有蛋白质,其它of dry beans or peas, eggs, nuts and seeds.干黄豆,豌豆,鸡蛋,坚果或种子类食物也含有蛋白质How much protein do you need to consume daily?我们每天应当摄入多少蛋白质呢How much protein is too much?多少蛋白质算多And are you getting enough?多少算适量One excellent source for understanding一个很不错的网站上可以了解how much protein you need is www.mypyramid.gov.蛋白质需求量,那就是 www.mypyramid.gov.According to my pyramid, adults should get 5.5 ounces该网站上说,成年人每天应当摄入5.5盎司的蛋白质of protein every day. Recommendations are made建议的蛋白质摄入量都是以盎司为计量单位的in ounce equivalents, for example; one meat patty例如,一个肉饼is about 2 ounce equivalence. All foods大概相当于两盎司蛋白质,所有食物have an ounce equivalent and once they are learned都有相应的蛋白质盎司值,一旦知晓了这些值all you have to worry about我们需要做的就是is getting 5.5 of them each day.每天摄入5.5盎司201502/360236市北区中医医院打瘦脸针多少钱

青岛丰胸中心Such wild climatic swings would have made the planet uninhabitable.这样疯狂的气候变化 会使得地球无法居住Vet theres something rather strange happening to the Moon但是月球的行为很奇怪that means we shouldnt take it for granted.MeetJerry Wiant.这意味着我们不能不懂得珍惜 认识一下杰瑞·维恩特Every morning, he rides up to the McDonald Observatory in West Texas,每天早上,他都开托去得克萨斯西部的麦克唐纳天文馆and its thanks to his work that we know something extraordinary about the Moon.多亏了他的努力 我们了解到了月球独一无二的特点So, how many times do you make this journey?你走这条路多少次了?Every day for 37 years.37 years! -Yeah, on this bike.连续37年,没有任何间断 37年-是的,就骑这个托Youre joking? -No, this one bike.Thats it up there, is it? -Yeah.你开玩笑吧-没有,就它 就在上面,是吗?-是的Jerrys job is deceptively simple.杰瑞的工作看起来很简单Once a day, he fires a laser at the Moon in order to measure its distance from Earth.他每天都要向月球发射一束激光 为了测量它与地球的距离Measuring the distance to the Moon is quite simple.测量月球距离很简单We start with a bundle of light,we send it through a telescope,我们用望远镜发射一道光朝向月球 它到达月球后照射到反射镜when it reaches the Moon it hits a reflector,and it comes back toward Earth.它到达月球后照射到反射镜 激光反射回地球We intercept that with our telescope and what we do is we time when the light left我们纪录光发射和回来的时间 我们纪录光发射和回来的时间and we time when the light comes back, and thats our data.这就是来回的距离这就是我们的数据201512/415416 A bridge spanning the Mississippi River would connect跨越密西西比河的桥梁将会east to west like never before.以前所未有的方式连接东部和西部The key to success for any railroad任何铁路公司成功的关键is getting across the Mississippi River.都是建立跨越密西西比河的桥梁Once you get across the Mississippi river跨越了密西西比河you can move west.你就能够进入西部The question is: How do you get across the Mississippi river?问题在于:如何跨越密西西比河The bridge will have to be over a mile long.这座桥的长度将超过一英里One in four bridges built at the time fail.当时每四座桥的建造中就有一座会失败And nobody has built a rail bridge this big.而且没人建过一座这么大的桥But Carnegie knows theres no reward without risk.但是卡内基懂得 没有风险就不会有回报He invests everything he has into the bridge.他将自己的一切都投入到了这座桥上Andy Carnegie stepped up.安迪·卡内基加快了步伐He decided he could do it.他认为他能做到One striking thing about Carnegie--卡内基有一个很重要的品质and this is true of the great entrepreneurs--这也是很多伟大企业家都具备的theyre willing to take risks.也就是愿意冒险Theyre willing to roll the dice and bet,他们愿意下赌注 掷骰子in later days, the whole corporation,去建立整个公司or in this case, bet his career.或是像这里这样 赌上自己的职业生涯201603/432190即墨市妇女儿童医院治疗狐臭多少钱青岛公立三甲医院做整形美容要证明吗




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