英语医学科普文章
英语医学科普文章
医学科普是科普知识和全民科学素质中的重要内容之一;而和谐医患关系及公平合理调处并最大限度地防范医疗纠纷是构建和谐社会的一个重要组成部分。下面是学习啦小编带来的英语医学科普文章，欢迎阅读!
英语医学科普文章1
人的寿命是否有极限
After celebrating her 60th year on the throne in style this pastweek, Britain's QueenElizabeth II can now look forward tobreaking some more records. She is already, at 86,Britain'soldest monarch (were she to die now, her son wouldimmediately be the 12th oldest).On Sept. 10, 2015, she wouldpass Queen Victoria to become the longest-reigning monarchinBritish history. To beat Louis XIV (who succeeded to the throneat the age of 4) for thelongest reign in European history, she would have to live to 98.
Elizabeth II is still going strong, but the maximum human lifespan isn't rising at anythinglike therate of average life expectancy, which is rushing upward globally at the rate of aboutthree monthsa year, mainly because of progress against premature mortality. Indeed, we mayalready have hitsome kind of limit for maximum lifespan -- perhaps because natural selection,with its strict focus onreproductive success, has no particular need to preserve genes thatwould keep us going to 150.
The oldest woman in the world, Besse Cooper, a retired schoolteacher in Georgia, will be116 onAug. 26, according to the Gerontology Research Group, an organization that studiesaging issues. That's a great age, but it's a hefty six years short of the record: 122 years and164 days, set byJeanne Calment of France in 1997. In other words, if Mrs. Cooper can getthere, Mrs. Calment'srecord will have stood for 21 years; if she can't, maybe longer.
That's a long time, considering that there are now nearly a half million centenarians alive intheworld. That number has been going up 7% a year, but the number of those over 115 isnotincreasing.
If Mrs. Cooper does not take the record, there are only two other 115-year-olds alive totake onthe challenge, and one of them is a man: Jiroemon Kimura, a retired postman fromKyoto. He'swithin seven months of beating the age record for his sex, set by ChristianMortensen, who died in 1998. But Mr. Kimura is less likely than a woman to make 122, andthere are fewer women over 115 today (two) than there were in 2006 (four) or even 1997 (three).
At least two people died after their 110th birthdays in the 1800s, if you're willing to trustthe birthcertificates. So the increase of 12 years in maximum life expectancy during the 20thcentury wasjust one-third as large as the increase in average life expectancy during the period(36 years).
In 2002, James Vaupel of the Max Planck Institute for Demographic Research in Rostock,Germany, startled demographers by pointing out that every estimate published of the levelatwhich average life expectancy would level out has been broken within a few years. JayOlshanskyof the University of Illinois, however, argues that since 1980 this has no longer beentrue foralready-old people in rich countries like the U.S.: Official estimates of remaining years oflife for awoman aged 65 should be revised downward.
Thanks to healthier lifestyles, more and more people are surviving into old age. But that isnotincompatible with there being a sort of expiration date on human lifespan. Most scientiststhink thedecay of the body by aging is not itself programmed by genes, but the repairmechanisms thatdelay decay are. In human beings, genes that help keep you alive as a parentor even grandparenthave had a selective advantage through helping children thrive, but onesthat keep you alive as agreat-grandparent -- who likely doesn't play much of a role in the well-being and survival of great-grandchildren -- have probably never contributed to reproductivesuccess.
In other words, there is perhaps no limit to the number of people who can reach 90 or 100,butgetting more than a handful of people past 120 may never be possible, and 150 isprobablyunattainable, absent genetic engineering -- even for a monarch.
在风风光光庆祝完自己登基60周年后，英国女王伊丽莎白二世(Queen Elizabeth II)现在可以期待打破更多纪录了。86岁的她已经是英国历史上最年长的君主了(如果她现在离世，她的儿子就会立即成为第12位年长的君主)。到2015年9月10日，她将会超越维多利亚女王(QueenVictoria)，成为英国历史上在位时间最长的君主。要打败四岁时继承王位的路易十四(Louis XIV)成为欧洲历史上在位时间最长的君主，她需要活到98岁。
伊丽莎白二世身体依然很硬朗，但人类最长寿命并不像平均预期寿命一样在不断增长，后者在全球范围内以每年约三个月的幅度在增长，主要是由于对抗过早死亡方面取得的进展。的确，我们或许已经达到了某种最长寿命的极限，这可能是因为严格以繁殖成功为中心的自然选择过程没有必要特别保存能让我们活到150岁的基因。
根据研究老龄化问题的老年学研究组织(Gerontology Research Group)的数据，世界最长寿的女性、来自佐治亚州的退休教师贝斯·库珀(Besse Cooper)将在8月26日年满116岁。这是很长寿的年纪了，但是依然比世界纪录小六岁多：122岁零164天，它是由法国的雅娜·卡尔芒(JeanneCalment)创下的纪录。换句话说，如果库珀能活到这个年纪，那么卡尔芒的纪录就保持了21年，如果活不到，可能保持的时间会更长。
这会是漫长的一段时间，因为目前全世界有近50万百岁老人在世。这个数字在以每年7%的幅度增长，但115岁以上老人的人数并没有增加。
如果库珀没有刷新纪录，就只有两位在世的115岁老人接受这项挑战，其中一位是男性：来自日本京都的退休邮差木村次郎右卫门(Jiroemon Kimura)。他还有七个月就将打破由1998年去世的克里斯蒂安·莫滕森(Christian Mortensen)创下的男性最长寿命纪录。但木村次郎右卫门活到122岁的可能性没有女性大，而目前超过115岁的女性(两位)没有2006年(四位)多，甚至还不如1997年(三位)。
从出生证明来看，19世纪至少有两个人在110岁生日后逝世。因此，20世纪最长寿命12年的增长幅度只不过是同期平均寿命增幅(36年)的三分之一。
2002年，德国罗斯托克马克斯-普朗克人口研究所(Max Planck Institute forDemographicResearch)的詹姆斯·沃佩尔(James Vaupel)指出，每次公开发布的对平均寿命趋稳水平的估计都会在几年内被打破，这令人口统计学家感到吃惊。然而，伊利诺伊大学(University of Illinois)的杰伊·奥尔山斯基(Jay Olshansky)则认为，从1980年开始，在美国等富裕国家，这种规律已经不适用于已经进入高龄的老人了：官方对年龄在65岁的女性剩余寿命的估算应该下调。
由于生活方式越来越健康，活到高龄的人越来越多。但这与人类寿命存在某种期限并不矛盾。大多数科学家认为，人体随年龄增大而衰老本身并不是由基因决定的，但延缓衰老的修复机制却是由基因决定的。对人类来说，帮助人作为父母甚至祖父母活着的基因有助于孩子健壮成长因而具备了选择性优势，但帮助人作为曾祖父母活着的基因可能永远都不会有助于繁殖成功，因为曾祖父母在曾孙的健康和生存上可能发挥不了什么作用。
换句话说，活到90岁或100岁者的人数或许没有上限，但让一大批人活到120岁以上或许永远都不可能实现，没有遗传工程的帮助，人是很难活到150岁的，即便君主也做不到。
英语医学科普文章2
15 Differences Between Positive People And Negative People
As you know, it is a drastically different experience being around positive people versus negative ones. If you are striving to be more positive yourself, here are 15 ways you can do so:
1. “Failure is part of learning.”
Positive people view failure as an opportunity to learn and get better. They understand that failure is an event, and doesn’t define who they are. Negative people are emotionally disabled by failure because they allow it to define who they are. They fail to understand that it’s part of the learning and growing process.
2. “I can do hard things.”
Positive people love to be challenged. They understand that there is no growth without struggle. Positive people embrace difficulty, and look for ways to overcome them. Negative people love the easy road. Because obstacles increase the likelihood of failure, they try to avoid them like the plague. To negative people, hard times don’t make you, they break you.
3. “I always give my best.”
Positive people focus on giving their best effort, regardless of the situation. They understand that there are many things they cannot control, but effort is not one of them. No matter what, the positive person strives to give their best — even if it isn’t much. Negative people want things to come easy to them. If they have to try hard, they believe they just aren’t good at it and give up. They are more likely to give their absolute best if they know people are watching them.
4. “She is inspiring!”
Positive people are inspired by the success of others, they look at those who are excelling and ask themselves the question, “What can I learn from them?” Negative people become jealous and threatened by the success of others. To negative people, when others succeed it means they are failing.
5. “What can I do better?”
Positive people embrace feedback. Because they are always striving to get better, they are open to learn anything that will enhance their skill set. Negative people get offended when they receive correction or feedback. Instead of seeing it as means to improve, they interpret feedback as a sign of their incompetence.
6. “I give power to what I focus on.”
Positive people focus on things they can control. They understand that their happiness is dependent on how they choose to respond to what happens to them. Positive people believe that they give power to what they focus on, so they use it wisely. Negative people center their focus on things they can’t control. For example, they ruminate over past conversations, beat themselves up on past mistakes, and allow their fear of the future to stop them in their tracks today.
7. “People can change.”
Positive people know that the only thing that doesn’t change is change. They believe that they can change, and that other people can change. Negative people believe that people are fixed; therefore, they don’t try to improve because they believe, “What’s the use?” Additionally, negative people don’t allow others to change. Once a negative person puts a label on something, it’s very difficult for them to see it in a different way.
8. “I still have a lot to learn.”
Positive people love to learn. They understand information evolves, and what used to work 10-years ago, might not be effective today. Negative people believe they know it all, and are less likely to welcome new information if it contradicts what they believe. They care less about what’s right, and more about who’s right.
9. “Let’s go big!”
A positive person isn’t afraid to swing for the fences because they don’t fear striking out. A negative person not only thinks small, but they also try to convince others that their dreams and aspirations are too big.
10. “Have you heard about [insert name]?”
Positive people build others up when they aren’t around. Negative people tear people down to make themselves feel good.
11. “I am my own worst enemy or best friend.”
Positive people have effective self talk. They are aware of the story they tell themselves, and don’t allow their own thoughts to discourage them. Additionally, they are realistic with their expectations. Positive people don’t feed themselves lies about their weaknesses or how difficult the situation is. Instead, they tell themselves what they need to do to succeed. Negative people are their own worst enemy. They struggle to see the bright side of anything, even if they are successful. They are also masterful at focusing on all the negative aspects, and diminishing their own confidence.
12. “What is my body saying?”
Positive people carry themselves like champions. They are purposeful in the way they interact with people and their facial expressions show positivity. Negative people carry themselves small. They hang their heads, and look down. Just by looking at them, you would think they are mad, sad, or indifferent — definitely not happy.
13. “Teamwork makes the dream work.”
Because they are team players, positive people will get behind and support ideas that are not their’s — even if they might disagree with it. Negative people have a hard time fully supporting ideas they feel won’t be successful. When an idea that wasn’t their’s doesn’t succeed, they are sure to give their teammates the “I-told-you-so” expression.
14. “What’s the bright side?”
Positive people have an attitude of gratitude. They can see the good in a situation, and don’t take things for granted. Negative people struggle to see the silver-lining in difficult situations. They don’t often take the time to stop and notice the positive aspects of a situation.
15. “You’re so good!”
Positive people like to spread positivity. They pay close attention to when others do well, and they are quick to tell them. Negative people say, “Why would I compliment people for things they are supposed to do?” What they don’t understand is, it’s not about the compliment, it’s about showing the other person that you notice them. A simple compliment can strengthen relationships and motivate the person to do even better. Positive people don’t underestimate the power of encouraging words.
英语医学科普文章3
10 Things Our Dogs Teach Us About Healthy Communication
If a dog will not come to you after having looked you in the face, you should go home and examine your conscience.- Woodrow Wilson
The Humane Society reports that approximately 47% of U.S households own at least one dog, and when we refer to the dog as man’s best friend, we mean it so sincerely that according to clinical psychologist Dr. Suzanne Phillips, we treat our dogs better than our spouses: “What is interesting in my work with couples is that although couples may disagree vehemently on most topics, they usually both soften in tone and manner to agree that the dog, cat, bird, or horse is great.” As much as we love our four-legged, furry friends, they demand a lot of responsibility; they need food, shelter, medical care, and attention, but when they chew holes in our favorite pair of high-heels or toss their biscuits all over the newly-cleaned carpet, we forgive them.
The reason why we sometimes seem to develop stronger relationships with our dogs than with the humans in our lives is so simple that we easily overlook it. Dogs operate on the Golden Rule; they treat us the way we want to be treated, and we respond in kind. Here are 10 things our dogs can teach us about healthy communication in our relationships.
1. They don’t hold grudges
According to a recent study led by ethologist Johan Lind at Stockholm University in Sweden, dogs’ short-term memory span is approximately 27 seconds. This might explain why your dog has no recollection of that vigorous game of tug you just played fifteen minutes ago and insists on whacking you around the legs with his rope for another go at it. On the other hand, this can actually work to our advantage. No matter what we do, whether it’s coming home late from work, snapping at them for wanting to play fetch when we’d rather watch TV, or boarding them at the vet for two weeks while we go on a family vacation, they still love us. A dog will never turn his back on you or withhold a snuggle, even when every other human in the vicinity declares you to be the most unlikable person they’ve had to deal with all day. Our dogs know we aren’t perfect, and because of this, they forgive our mistakes. IF we can learn one thing from this, let it be to never let the sun set on our anger. Our dogs certainly never do.
2. They always remember to say “I love you.”
One of the things I love most about my dog is his demonstrative displays of affection; tail-wagging, nuzzling, and licking are all ways to let me know he loves me. More than this, I love that I never have to ask him for it. Not only does he forgive me for being an absolute pain in the butt (which happens more often than I feel comfortable admitting), he reminds me that, however imperfect we are, we’re always worthy of love. Never miss an opportunity to tell a friend or family member you love them. It might be said that too much of a good thing is dangerous, but if we can learn anything from our dogs, it’s that this rule doesn’t apply to love.
3. They value quality time
Does your dog jump up eagerly every time he sees his leash or his favorite fetch toy? Does he nudge his nose between your hand and the laptop keyboard as you frantically type away, racing to meet a deadline? This is his way of reminding you that sometimes, work can wait. When we take fifteen minutes to jog around the block with our dogs or throw the Frisbee in the back-yard, we should also challenge ourselves to think about how we can transfer this practice to the relationships we cultivate with other people. Take a few minutes on your lunch-break to text your best friend and ask how her day is going. Stop by your girlfriend’s apartment after work with Chinese takeout and a bottle of wine and enjoy a few hours in her company. Time with our loved ones is finite, and since we can never know how much of it we have left, it’s a luxury we can’t afford to squander.
4. They always listen to our problems
I love those classic sitcom or movie scenes with an angst-ridden teenage girl, sitting on the porch with her Golden Retriever, asking why the boy at school whom she’s convinced is her soulmate won’t give her a second look. In response, the dog simply wags his tail and licks her face, as if to say, “Whatever. He’s an idiot. I still love you.” Your dog will never roll his eyes at you when you complain about a coworker for the tenth time or wonder why your ex still seems to have you dancing on a string. Your dog also won’t tell you to just cut the cord yourself and stop replying to his texts, because that’s not what you want to hear. He just offers his big floppy ears as a vessel for your frustrations without complaint.
Think about this the next time you find yourself serving as a sounding board for someone else’s problems. Pretend, just for a few minutes, to be your dog, as if you can do nothing but listen sympathetically and nod. (Just don’t lick anyone’s face. It probably won’t end well).
5. They’re always happy to see a friend
Whether it’s been five seconds, five minutes, or five years, our dogs always greet us with a yip and a wagging tail. This likely has to do with that so-called short-term memory problem I mentioned earlier, but again, this works in our favor. A dog treats each time he sees someone he loves as an opportunity to rejoice and reunite. Imagine how much sweeter our interpersonal relationships would be if we treated each other that way.
6. They teach us about sharing
We share our food, our beds, and our spot on the couch with them, and never once do we complain. If we do, it’s a half-hearted complaint while the dog casually raises his head from his position in the middle of the bed, gives a look that, roughly interpreted, means “Yeah, right,” and goes back to sleep. WE share the spaces in our homes and our hearts with our dogs not under a sense of obligation, but simply because we want to. Our willingness to reach out to other people in our lives, physically and emotionally, can be just as rewarding because we have the mutually beneficial experience of sharing our resources and making a connection with someone who might one day return the favor. No one is meant to walk through life alone.
7. They force us to listen
In addition to being great listeners themselves, our dogs force us to listen in order to understand their way of communicating. The yips, the whines, the barks, and the howls are all nuances of the canine vocabulary, and we learn whether Sparky is happy, sad, frightened, or feeling threatened based on the tenor of his bark. We can similarly improve our communication with others just by listening to their tone of voice, learning to recognize shades of emotion that can help us to show more sensitivity toward one another’s feelings.
8. They teach us about trust
When we take our dogs into our homes, they simply trust that we’ll treat them with love and kindness. They trust that we’ll feed them, walk them, and care for them when they’re sick because, having been domesticated, they’ve learned to depend on humans for survival. In doing so, they hold us accountable. They remind us that we need to show others with our actions that we’re worthy of their trust and respect. I sometimes think that if people saw in me whatever my dog does, I’d have a lot more friends.
9. They remind us of the importance of physical contact
In this increasingly technological world, virtual is something of a buzz-word, but as convenient as having the world at our fingertips can be sometimes, it also eliminates a lot of the need for human contact. Even in the digital age, our dogs crave physical touch. They need pets, belly rubs, and scratches behind the ears as affirmation of our affection, and they reward us with licks and snuggles. Texts are great, but according to the National Institute of Health, our brains crave hugs. The release of oxytocin that hugs trigger creates feelings of pleasure by lowering blood pressure and stress hormones.
10. They teach us to read body language
While dogs communicate verbally by barking, they also use body language, much as humans do, to tell us how they feel. A wagging tail might indicate happiness, while a drooping tail and ears might indicate fear or sadness. I used to have a Labrador who would pace incessantly whenever he heard a crying baby. This was his way of alerting us to something unsettling that he knew required attention.
Recognizing these signs in our dogs’ nonverbal communication is easily transferable in our human relationships as well. Noticing posture, facial expressions, or hand gestures can help us to read between the lines in our conversations and gain a deeper understanding of each other’s emotions.