j******l
发帖数: 10445 | 1 last two: sperm volume, sperm speed. lol |
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w***s
发帖数: 7132 | 2 A new study led by a researcher at the Stanford University School of
Medicine shows that mammalian species can "choose" the sex of their
offspring in order to beat the odds and produce extra grandchildren.
In analyzing 90 years of breeding records from the San Diego Zoo, the
researchers were able to prove for the first time what has been a
fundamental theory of evolutionary biology: that mammals rely on some
unknown physiologic mechanism to manipulate the sex ratios of their
offspring as part of... 阅读全帖 |
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H********g
发帖数: 43926 | 3 也可能没有全球人口那么多，不过反正是很多：
一个男人一辈子大概造200个中国，一个月释放半个华夏。
In fact, the average male will produce roughly 525 billion sperm cells over
a lifetime and shed at least one billion of them per month. A healthy adult
male can release between 40 million and 1.2 billion sperm cells in a single
ejaculation.
In contrast, women are born with an average 2 million egg follicles, the
reproductive structures that give rise to eggs. By puberty, a majority of
those follicles close up and only about 450 will ever release ... 阅读全帖 |
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H********g
发帖数: 43926 | 4 wikipedia上说鲸鱼老是玩深潜，老了还是有职业病：
While sperm whales are well adapted to diving, repeated dives to great
depths have long term effects. Bones show the same pitting that signals
decompression sickness in humans. Older skeletons showed the most extensive
pitting, whereas calves showed no damage. This damage may indicate that
sperm whales are susceptible to decompression sickness, and sudden surfacing
could be lethal to them.[40] |
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R***a
发帖数: 41892 | 5 sperm whale跟sperm是啥关系？
extensive
surfacing |
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H********g
发帖数: 43926 | 6 从鲸鱼的呼吸方式看，鲸鱼可能不需要含很大体积的空气下去，所以带下去的氮气跟身
体体积比不很多。
鲸鱼在每次潜水之间都要在水面上休息几分钟，在这个期间频繁地换气。因为鲸鱼身体
里的肌红蛋白和血红蛋白量都很大，可能可以在这个过程里让很多氧气溶解在身体里，
就像充电一样。因此鲸鱼并不需要像人类那样带3000升（人肺活量的1000倍）空气下去
。所以带下去的总氮气跟身体体积的比例没有人类潜水员那么大。
Between dives, the sperm whale surfaces to breathe for about eight minutes
before diving again.[11] Odontoceti (toothed whales) breathe air at the
surface through a single, S-shaped blowhole. Sperm whales spout (breathe) 3
–5 times per minute at rest, increasing to 6–7 times per minute after a
dive. ... 阅读全帖 |
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n****4
发帖数: 12553 | 7 can't be true. sperms are a lot, but eggs are few. children must be
defined as one-one combinations of sperms and eggs . |
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H********g
发帖数: 43926 | 8 不让进
The short answer is no.
Rats and mice are not that closely related. Under normal circumstances, rats
and mice are not attracted to each other and will not mate. Even if the
sperm of one and the eggs of the other are mixed together artificially,
fertilization will not occur: the eggs of one do not allow entry of the
other's sperm. |
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H********g
发帖数: 43926 | 9 These natural barriers can be overcome in a laboratory, at least at first.
Such attempts typically result in a hybrid embryo which dies after a few
cell divisions.
For example, the egg's protective covering can be stripped off, allowing the
sperm of the other species access to the egg. Sperm can also be injected
directly into the egg. When this is done, fertilization occurs. The
resulting hybrid embryo is not viable, however. It typically goes through
one cell division, resulting in a two-cell e... 阅读全帖 |
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C********s
发帖数: 495 | 10 EX之一给我打一电话，说她又流产了
好像啥她老公的sperm形状不好，胎儿没心跳
I was like........oh OK......... that is bad......... Bad sperm is bad......
And she was like......... what should I do, I am so worried, what if I end
up not able to have any
kids.........
I was like........别着急，你看我都不着急呢
And she was like........这..............
然后好像心情就更不好了
不知道该跟她说啥，我这不是没经验么，又想安慰她的说，大家给支招吧 |
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t*******e
发帖数: 118 | 11 $10000 应该是整个IVF procedure 的费用。 这方面的事情归LD管，我只管生孩子。
等她下班了让她来回答吧。
如果用自己的卵子，那么完全不必找医生。 就像Lword 里面Tina和Bett, 他们就是买
了donor sperm, 自己在家操作的。 如果是这样，那费用也就只是 sperm 的钱了。 |
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g********d
发帖数: 4174 | 12 A review:
But there is a much deeper problem with the film that Hernandez completely
ignores. What begins as an opportunity to portray a "non-traditional" family
falls into stereotypes that drag down the entire story.
Early on in the film, Bening and Moore make love while watching gay male
pornography. This scene leads to a predictable moment in which their son
finds the video and then one of the mothers finds him watching it, but the
payoff is hardly worth the unlikely setup.
- - - - - - - - - ... 阅读全帖 |
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F*****k
发帖数: 1112 | 13 不可以去Sperm Bank吗？
话说大家有多少人考虑过Sperm Bank呀？有人成功过吗？ |
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j*******2
发帖数: 83 | 14 前 一阵子很生媚外女的气，我觉得吧，中国人都是兄弟姐妹，所以她们也是我们的
姐妹，兄弟姐妹吃了亏，应该劝一下吧，所以就想劝一下媒外女姐妹们。
在中国，不夸张的说，100个女人被外国男人玩弄，只有一个能够“幸运”的嫁给
外国男人。
100个嫁给外国男人的中国女人，其中60个最后离婚，20个生活在更穷困的外国农
村，5个成为小老婆，5个成为性奴（换妻、裸照上网、全家男人共用...）,嫁给外国老
头的...幸运能在国外过上好日子的女人，剩下的没几个！
可以说，找外国男人真正能幸福的比例非常非常非常低，大多是痛苦甚至悲惨，这
么说一点也不夸张。
男人都知道，风险太大的生意不能做，女人也应该清楚，风险太大的感情不能投入
吧。
我们中国人都是兄弟姐妹，平常各过各的，一旦有难，还是要互相提醒互相帮助，
就像四川地震的时候对吧，互相帮助是我们中国人一种本分。
劝一下姐妹们，找外国男人风险很大，一定要小心再小心，其实也是出于好心，谁
知却招来女人们一阵臭骂...（（（讨厌，我们爱跟谁关你什么事）））...
男人劝女人，无非是希望姐妹们别往火坑里跳，说急了骂几句，也是好意。女人就
不同了，明知道嫁出去... 阅读全帖 |
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H*******o
发帖数: 1637 | 15 据我观察，这个公式非常正确
Asian sperm + White egg = good looking kids
亚洲(黄色)精子 + 白色卵子 = 优秀的混血儿
White sperm + Asian egg = fcuked up looking kids
白色精子 + 亚洲(黄色)卵子 = 垃圾混血儿 |
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m****8
发帖数: 627 | 16 what is the difference between a lawyer and a sperm?
A sperm has one in a million chances turning into a human being. |
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e*********n
发帖数: 51 | 17 since you post this all around the mitbbs, I may talk more about it.
first of all
let me correct some misunderstanding we might have.
1) erection dysfunction is quite different from male infertility.
A man with erection dysfunction who is unable to maintian an erection
during foreplay or intercourse may be very capable of producing sperm which
could fertilize an egg.
However, an infertile man is usually able to maintain an erection,
but he may be unable to father a child due to problems with spe... 阅读全帖 |
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l*********1
发帖数: 2971 | 18 Egg Quality
Egg quality is often blamed as the cause for IVF failure. Improving egg
quality gives you a better outcome from subsequent IVF cycles and also
contributes to having a healthy pregnancy and baby.
One of the reasons that the focus is more on egg quality than sperm quality
is that the egg contributes all the mitochondria for the embryo.
Mitochondria are tiny organelles in every cell of your body where energy is
produced. All the mitochondria in the embryo come from the egg – none come
f... 阅读全帖 |
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w*********r
发帖数: 2192 | 19 Older Men's Sperm Raise Risk Of Genetic Problems In Offspring
http://www.medicalnewstoday.com/articles/44641.php
after the age of 40. Not only does the lower quality of older men's sperm lower fertility, it also makes it more likely that babies with genetic abnormalities are born. |
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n*****s
发帖数: 64 | 21 I also total agree 结婚和生育没有必然联系，只要赶上时间生育就可以，结婚可遇
不可求, 难啊...
Now if you have to go to sperm banks for donor sperm, will you choose from?
(a) caucasian donors
(b) asian donors
(c) jewish donors
(d) other
Considering mother is a chinese, if choosing from asian donors, especially
those from east asia (china, korea, japan), the child will look like his/her
mom, and may have higher IQ. If choosing from caucasian donors, the child
may look cute because he/she is a mix? and maybe easier for him/her to gr... 阅读全帖 |
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T*******d
发帖数: 126 | 22 人工授精is a solution if the sperm has some quality. The fetus could have
problem if the male sperm has quality issue. You never really know about 人
工授精, right? Do you know how much pain a woman need to bear through 人工授
精? However, even if I would like to sacrifice and do 人工授精, he still
decided to file petition. You never know how much pain I had when I first
knew about his health problem. It almost shattered my heart and my dream.
Plus, he and I had a bumpy relation along the road. I did feel unsaf... 阅读全帖 |
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m**********e
发帖数: 2808 | 23 作為一個曾經考慮過sperm bank的新媽支持你。現在才知道我當初找sperm bank的想法
多天真及不負責，幸好我意識到這個不負責。據我媽媽說，我的小朋友是她親自帶過的
4個中最乖的(很感恩，touch wood)。外子也很幫手（我媽媽的說法是＂下世你都要找
回他來嫁＂，我很感恩，touch wood）。我自己生產也順利（無麻藥push了十幾分鐘）
，坐月調理得也好，恢復非常快，我本身以前體質也不錯（力量比不少男人好），也能
吃苦。就是這樣，有時都覺得overwhelmed，未能時時刻刻都以最好態度對小朋友。
所以說為了對孩子負責，沒有丈夫在身邊，或者沒有負責任、願分擔、夠精力的丈夫在
身邊時，不要輕率地生育。生孩子容易，但孩子生下來要養的。作為父母，我們手中掌
握的是一個人的人生起點，這一程走得如何，很可能就是不同人生路了，所以我們再惶
栈炭忠膊粸檫^。孩子不是讓我們自己人生更完滿的工具。考慮生養孩子時，負責任的
態度是一定要摒棄＂聊勝於無＂的態度：好歹有個后代，也聊勝於無；孩子非婚生，父
親閒時來看看，也聊勝於無；為了孩子婚生，找個不負責任或年紀太大想負也無精力負
責的丈夫，... 阅读全帖 |
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C******9
发帖数: 1 | 24 conception:
1. a. Formation of a viable zygote by the union of the male sperm and
female ovum; fertilization. b. The entity formed by the union of the male
sperm and female ovum; an embryo or zygote.
2. a. The ability to form or understand mental concepts and abstractions. b
. Something conceived in the mind; a concept, plan, design, idea, or
thought. See Synonyms at idea.
3. Archaic A beginning; a start.
他真的用了“conception”吗？ |
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