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全部话题 - 话题: mammal
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h*****i
发帖数: 9112
1
来自主题: WebRadio版 - 严肃点,这是尿尿的流体力学zz
刚才去翻了一下原文,这帮人放了好多动物嘘嘘的录像在supplementary里。。。。。
copy一段作者的discussion:
Why is urination time 21 s, and why is this time constant across animal
sizes? The numerical value of 21 s arises from the underlying physics
involving the physical properties of urine as well as the dimensions of the
urinary system. Our model shows that differences in bladder capacity are
offset by differences in flow rate, resulting in a bladder emptying time
that does not change with system size. Such invariance has been observ... 阅读全帖
v******s
发帖数: 6949
2
来自主题: Girl版 - 核事故地点的小猫咪
The Kittenmaster writes: Yesterday I visited the site of the 1986
Chernobyl nuclear disaster in Ukraine. I spotted this little fellow just
outside the 10km exclusion zone, where we stopped for lunch. He looked
happy and healthy, and was certainly very friendly (and yes, I know he’s
not strictly a kitten, but I thought you’d like to see him anyway). Animal
life in the area, after originally suffering terribly (all small mammals
were dead within a couple of years) has actually flourished since the... 阅读全帖
wh
发帖数: 141625
3
来自主题: Girl版 - 狼是害羞的动物 (转载)
哇是五大湖那边吗?羡慕你去过好多地方啊。我可能看到狼毛也不认识,哈哈。那些工
作人员也说shy就更证实这本童话书了。我也觉得是不接近人,wiki上说有过狼攻击人
的事例,不过的确很少,以狼这样攻击能力强的肉食动物而言,的确罕见:
Compared to other carnivorous mammals known to attack humans in general, the
frequency with which wolves have been recorded to kill or prey on people is
much lower, indicating that though potentially dangerous, wolves are among
the least threatening for their size and predatory potential.

得好可爱了,赫赫
见人”。狼本身是很狡猾的动物。
i****a
发帖数: 36252
4
来自主题: Joke版 - 为啥大海是咸的?
hum... whale is mammal
x*****a
发帖数: 7797
5
来自主题: Joke版 - Jonah was swallowed by a whale
A little girl was talking to her teacher about whales.
The teacher said it was physically impossible for a whale to swallow a human
because even though it was a very large mammal its throat was very small.
The little girl stated that Jonah was swallowed by a whale.
Irritated, the teacher reiterated that a whale could not swallow a human; it
was physically impossible.
The little girl said, 'When I get to heaven I will ask Jonah'.
The teacher asked, 'What
if Jonah went to hell?'
The little girl re... 阅读全帖
m**d
发帖数: 21441
6
【 以下文字转载自 Military 讨论区 】
发信人: wayofflying (小破熊), 信区: Military
标 题: 南京大学重大发现 揭露了转基因惊人秘密
发信站: BBS 未名空间站 (Sun Oct 2 23:46:36 2011, 美东)
南京大学张辰宇教授重大发现 “剑指”转基因食物安全(图)
在九月出版的《细胞研究》(Cell research)的一篇研究中,南京大学张辰宇教授课题
组展示了一项非常令人惊奇的发现——植物的微小核糖核酸(microRNA)可以通过日常
食物摄 取的方式进入人体血液和组织器官。并且,一旦进入体内,它们将通过调控人
体内靶基因表达的方式影响人体的生理功能,进而发挥生物学作用。该研究证明植物微
小核糖核酸可能是食物中的“第七种营养成分”(其他六种分别是水、蛋白质、脂肪
酸、碳水化合物、维他命和稀有元素)。
南大教授张辰宇作《21世纪生物科学与生物经济》讲座
原文地址
Exogenous plant MIR168a specifically targets mammalian LDLRAP1: evidence of
cross-... 阅读全帖
f********t
发帖数: 6999
7
【 以下文字转载自 Military 讨论区 】
发信人: wayofflying (小破熊), 信区: Military
标 题: 南京大学重大发现 揭露了转基因惊人秘密
发信站: BBS 未名空间站 (Sun Oct 2 23:46:36 2011, 美东)
南京大学张辰宇教授重大发现 “剑指”转基因食物安全(图)
在九月出版的《细胞研究》(Cell research)的一篇研究中,南京大学张辰宇教授课题
组展示了一项非常令人惊奇的发现——植物的微小核糖核酸(microRNA)可以通过日常
食物摄 取的方式进入人体血液和组织器官。并且,一旦进入体内,它们将通过调控人
体内靶基因表达的方式影响人体的生理功能,进而发挥生物学作用。该研究证明植物微
小核糖核酸可能是食物中的“第七种营养成分”(其他六种分别是水、蛋白质、脂肪
酸、碳水化合物、维他命和稀有元素)。
南大教授张辰宇作《21世纪生物科学与生物经济》讲座
原文地址
Exogenous plant MIR168a specifically targets mammalian LDLRAP1: evidence of
cross-... 阅读全帖
s******g
发帖数: 437
8
good one.
Actually, some Americans do think whales are big fish. In one episode of
Seinfeld:
George: The sea was angry that day, my friends - like an old man trying to
send back soup in a deli. I got about fifty feet out and suddenly, the great
beast appeared before me. I tell you he was ten stories high if he was a
foot. As if sensing my presence, he let out a great bellow. I said, "Easy,
big fella!" And then, as I watched him struggling, I realized that something
was obstructing its breathing.... 阅读全帖
M******n
发帖数: 43051
9
Lots of American guys don't think human are mammals
n***d
发帖数: 8857
10
Japanese Government Covers Up Mercury Poisoning From Eating Dolphins
Tuesday, May 11, 2010, 10:48
Tokyo, Japan – For many years, Taiji, Japan has been a target of
international criticism due to its cruel mass capture and horrific slaughter
of mercury-contaminated dolphins and pilot whales, both for human
consumption and to supply captive marine mammal aquaria industry. Evidence
presented in the Academy Award winning film The Cove, and in University of
Hokkaido Professor Tetsuya Endo’s study... 阅读全帖
m***y
发帖数: 14763
11
来自主题: Joke版 - 二师兄的唯美写真~ 「图转
?
The male mammals just get the same number of nipples as the female, right?
R******d
发帖数: 5739
12
来自主题: Joke版 - 求学术版鉴定真假

well, i am fine with killing fish or crab, but mammals is a bit too much.
see the post next door for kicking the donkey off the cliff. I think
livestocks are killed by electrocution these days. I doubt they can do that
in a supermarket but with a knife. I see processing live fish in chinese
supermarket.
H********g
发帖数: 43926
13
Other animals[edit]
Due to similar reproductive system development, many mammals, including
chimpanzees, elephants, manatees, whales, and horses retain hymens.[17][18]
M******n
发帖数: 43051
14
sex orietation呢?
H********g
发帖数: 43926
15
The female monkeys need to get their anthropology degree before they can
agree to this theory.
H********g
发帖数: 43926
16
[–]Macracanthorhynchus 98 points 3 days ago
To expand on this, because I'm a bored parasitologist and a lot of people
seem to be asking for clarification - most American raccoons (as many as 70%
of adults and 90% of juveniles in some areas) carry a parasitic roundworm
in their guts called Baylisascaris procyonis. This is not their only
parasite, but it is the among the most serious for humans. The raccoons poop
out the eggs of the roundworms that live in their guts, and they infect
most any vert... 阅读全帖
H********g
发帖数: 43926
17
来自主题: Joke版 - 又一生物学难题
原来海生哺乳动物不喝水啊
http://www.scientificamerican.com/article/how-can-sea-mammals-d
H********g
发帖数: 43926
18
来自主题: Joke版 - 又一生物学难题
吃鱼的话鱼也是跟人差不多淡的。所以食物本身也不带多少盐。
吃海草或者贝类等话食物会带进去很多盐,就要想办法排掉。
Different food types vary in salt content. Species that subsist on plants or
invertebrates (such as crustaceans and mollusks) consume food with about
the same salt content as seawater. These species thus face the same salt
removal problem they would have if they drank seawater directly. In contrast
, marine mammals that feed on fish consume food with a salt content similar
to that of their own blood, thereby avoiding the problem entirely. ... 阅读全帖
d****o
发帖数: 32610
19
来自主题: Joke版 - 又一生物学难题
2001年的时候都还不知道海豚怎么喝水的?
没想到啊
For most whales and dolphins, however, we simply do not know how they get
their water, because it is difficult to observe these animals.
http://www.scientificamerican.com/article/how-can-sea-mammals-d
海洋公园的海豚是养在海水里还是淡水里?
H********g
发帖数: 43926
20
如果光比蛋白质基因的有无和差别,那人和猩猩的蛋白质序列的确就差1%,这不令人吃
惊。蛋白质就像是低级的函数,把这些蛋白质堆积起来是堆不出细胞的。真正的程序是
怎么用这些蛋白质。我觉得对这个问题,到目前为止我们的理解都相当少,比如说一个
人蛋白质基因,通常非编码区可以占到整个序列的90%以上,这些地方到底说了些什么
,我们的理解很少吧。如果在一大段乱码区,藏着小段小段的控制字符,那就是说序列
和序列的权重是不同的。如果1%的差别大多在权重高的地方,实际的效果也许是50%以
上的差别。
说星星和人96%都一样的这个文章是2005年左右的。似乎主要的对比都是在比蛋白质序
列。对非编码区的理解至今都比较浅,估计比了也白比:不知道哪里是重要的,哪里是
不重要的。
http://genome.wellcome.ac.uk/doc_WTD020730.html
The consortium found that the chimp and human genomes are very similar and
encode very similar proteins. The DNA sequence... 阅读全帖
R***a
发帖数: 41892
21
其实不是刺猬,是长得像刺猬的弹孔目
http://www.ucmp.berkeley.edu/mammal/monotreme.html
类似袋狼
h*********r
发帖数: 10182
22
来自主题: Joke版 - 老鼠是活化石?
科学家发现了125m years old mammal 化石。 和恐龙同时期的, 就和现在的老鼠几乎
一样。
H********g
发帖数: 43926
23
来自主题: Joke版 - 中国公布可以生二胎以后
草,西人真是丧尽天良啊,还有脸说别的民族吃的东西如何不人道
Like all mammals, dairy cows must be impregnated in order to produce milk.
Cows in the dairy industry spend their lives in a constant cycle of
impregnation, birth, and milking with just a few short months of rest
between pregnancies.
H********g
发帖数: 43926
24
来自主题: Joke版 - 中国公布可以生二胎以后
草,西人真是丧尽天良啊,还有脸说别的民族吃的东西如何不人道
Like all mammals, dairy cows must be impregnated in order to produce milk.
Cows in the dairy industry spend their lives in a constant cycle of
impregnation, birth, and milking with just a few short months of rest
between pregnancies.
r*s
发帖数: 2555
25
来自主题: Joke版 - 需要多个精子?
Bird eggs are fertilized by more than one sperm, a process called polyspermy
. Penetration by multiple sperm may be unusual in the animal kingdom, but it
is somehow crucial to the development of the bird embryo, a new study finds.
“In humans and mammals, you only need one sperm to penetrate the egg,”
said Nicola Hemmings, an evolutionary biologist at the University of
Sheffield and one of the study’s authors. “If there’s more than one, it
can be lethal and we end up with the embryo dying.”
Dr. H... 阅读全帖
c******n
发帖数: 16666
v*****1
发帖数: 2200
27
来自主题: Joke版 - 爸爸带宝宝的时候
Like all mammals (except humans and apes, who have to learn how to swim),
elephants are very good, untiring swimmers
h******e
发帖数: 9616
28
来自主题: Joke版 - 爸爸带宝宝的时候
喵也是mammal不?
k*******2
发帖数: 4163
29
你说的对,大部分欧洲都吃。
美国人一般不吃哺乳动物的内脏:
"The consumption of organ meats is relatively uncommon in U.S. culture,
although some regional cuisines make extensive use of them."
"Use of organs of mammals is not common, except for the liver, which is
common to a certain degree."
https://en.wikipedia.org/wiki/Offal
c******n
发帖数: 16666
30
有毒的哺乳动物貌似都集中在长得比较吓人的地老鼠那边
https://animalcorner.co.uk/venomous-mammals/
L*****L
发帖数: 406
31
来自主题: Love版 - Endless love(真实故事转载)
As Nick Schmidt's body grew weaker as he battled cancer, the bond he shared
with Bahar Mallah grew stronger
By Duaa Eldeib, Tribune reporter
5:55 PM CST, December 12, 2010
When Nick Schmidt and Bahar Mallah were introduced, he told her he was sick.
At a bar after an Illini game on a chilly night in October 2008, she asked
him why he wasn't drinking. Cancer, he explained. That was typically when
such conversations ended.
But Mallah stuck around long enough for him to ask whether he could buy her
... 阅读全帖
b***t
发帖数: 1513
32
http://www.enchantedlearning.com/subjects/mammals/dog/label/anatomy/label.shtml
不过我觉得那个link里面的没用。
你就直接和他们说lulu face没有弄好,尤其是the hair between her nose and eyes,人家应该就明白了。
x********u
发帖数: 15396
33
Cats are the only primary hosts of T. gondii; they are the only mammals in
which Toxoplasma is passed through the feces
http://www.peteducation.com/article.cfm?c=1+1318&aid=770
t******n
发帖数: 3113
34
来自主题: pets版 - [bssd]shelter真的会杀猫么
前面已经说了,猫是不介意吃垃圾和尸体的,只有50%的猫靠捕猎维生,而且主要的下
游生物是繁殖力巨强的小型mammals(相信适应新环境也很快),猫的天生捕鸟能力是很
有限的,基本是不存在的,能抓到的多是受伤或者死掉的鸟,对野生鸟类不太存在巨大
威胁。
而且什么叫做融入当地生态,就是取得新平衡而不是破坏食物链。外来物种入侵时,大
规模扩散是很快的,而且初始数量上不需要很多。但在这100年里,不断有家养猫变成
流浪猫,不但没有猫大规模繁衍需要控制的事情出现,我们甚至都见不到真正的n代野
猫,自身能不能融入野生生物圈都是个问题,更别提制造灾难了。
我认为的就是,就算撒手不管流浪猫让他们自生自灭,最终的结果就是他们挤进本地生
物圈,然后各种生物数量达到新的平衡。所谓会造成生态灾难是很难的,中国城市里现在也没
有天生的野猫(除了草原野猫),流浪猫还不是等于引进一个新物种,竞争者和天敌还少一点(中国没有
那么多野生小动物),90%都没绝育,结果也没见它们爆炸式增长 (当然,很多都被人吃了)。
总之,没那么可怕。
p****y
发帖数: 23737
35
【 以下文字转载自 Vegetarianism 俱乐部 】
发信人: purity (purity), 信区: Vegetarianism
标 题: 如果你不愿意吃狗肉和猫肉,为什么吃鸡肉?
发信站: BBS 未名空间站 (Thu Nov 25 07:39:04 2010, 美东)
http://article.yeeyan.org/view/185743/147710
如果你不愿意吃狗肉和猫肉,为什么吃鸡肉?
moviemovie于2010-11-04 00:42:11翻译
作者:布鲁斯.弗莱德茨(Bruce Friedrich)
最近数以亿计的鸡蛋被召回,对于经常食用鸡蛋的大众来说,这无疑是个坏消息。令人
没有想到的是,这样一来,鸡被推到了聚光灯下,全社会都在关注这些鸡肉的来源。
由此产生的的后果就是漫天铺地的媒体报道。无论是黛安.索亚,还是艾米.古德曼的
电视报道(译者注:这两位都是著名的电视记者),无论是纽约时报数篇评论还是CNN的
简.米歇尔深度分析都让美国民众震惊,他们没有料到鸡在美国受到如此残忍的对待。
因祸得福的是美国人因此认识到了鸡的遭遇。在美国的任何地方,数以百万... 阅读全帖
b******a
发帖数: 12216
36
☆─────────────────────────────────────☆
purity (purity) 于 (Sat Nov 27 22:10:55 2010, 美东) 提到:
【 以下文字转载自 Vegetarianism 俱乐部 】
发信人: purity (purity), 信区: Vegetarianism
标 题: 如果你不愿意吃狗肉和猫肉,为什么吃鸡肉?
发信站: BBS 未名空间站 (Thu Nov 25 07:39:04 2010, 美东)
http://article.yeeyan.org/view/185743/147710
如果你不愿意吃狗肉和猫肉,为什么吃鸡肉?
moviemovie于2010-11-04 00:42:11翻译
作者:布鲁斯.弗莱德茨(Bruce Friedrich)
最近数以亿计的鸡蛋被召回,对于经常食用鸡蛋的大众来说,这无疑是个坏消息。令人
没有想到的是,这样一来,鸡被推到了聚光灯下,全社会都在关注这些鸡肉的来源。
由此产生的的后果就是漫天铺地的媒体报道。无论是黛安.索亚,还是艾米.古德曼的
电视报道(译者注:这两位都是著... 阅读全帖
m**u
发帖数: 6829
37
来自主题: pets版 - 请猫妈们帮个忙
看置顶的宠物常识,你的问题都有谈到。我还专门说了by-product的问题:
官方(Association of American Feed
Control Officials)的定义:The non-rendered, clean parts, other than meat,
derived from slaughtered mammals. It includes, but is not limited to, lungs,
spleen, kidneys, brain, livers, blood, bone, partially defatted low
temperature fatty tissue, and stomachs and intestines freed of their
contents. 就是说呢,肯定不是肉,多半是内脏及其内容物,比如血液和脑浆,胃和里
面没消化的东西,肠子和里面的黄白之物… 这里还没提到一些事:4D animals (dead,
dying, diseased, down), road kill, euthanized cats an... 阅读全帖
b******a
发帖数: 12216
38
来自主题: pets版 - [合集] 请猫妈们帮个忙
☆─────────────────────────────────────☆
PQOI (pqoi) 于 (Tue Jan 25 21:52:15 2011, 美东) 提到:
我ld呢,十分不信我说by-product对猫不好,认为shelter推荐的diet science是不错
的,可以长期用。
理由如下:
shelter对猫是负责的,他们用diet science这么多年了,也没什么问题。
diet science在petsmart里有卖,还不少,那么肯定有不少的用户群。
最重要的还是要看成分的百分比,比如说protein占了多少,至于添加了什么并不重要。
我想调研一下:
1、by-product对猫不好的证据。我找到了一些,但是都是一些博客什么的,并没有很
正规的,很详细的解释。所以如果mm有比较详细的介绍,能不能提供个连接?
2、diet science不好的证据。我看了许多review,说不好,但也没说具体什么不好,
有什么后果。
猫妈们,帮个忙吧!我现在以science diet在附近超市买不到,并且双儿并不爱吃
science diet,吃的很少为由,换了一... 阅读全帖
g**4
发帖数: 863
39
来自主题: pets版 - Chicago可爱猫咪求寄养10天
有那么恐怖 ??
Google了下
The definition for meat by-products by the Association of American Feed
Control Officials is:
The non-rendered, clean parts, other than meat, derived from slaughtered
mammals. It includes, but is not limited to, lungs, spleen, kidneys, brain,
livers, blood, bone, partially defatted low temperature fatty tissue, and
stomachs and intestines freed of their contents. It does not include hair,
horns, teeth and hoofs. It shall be suitable for use in animal food. If it
bears name desc... 阅读全帖
l******8
发帖数: 9475
l*****o
发帖数: 26631
41
meal是熟的脱水的meat,蛋白含量比较高(raw meat含大量水), 不过质量没啥保证。
"Meat meal is the rendered product from mammal tissues, exclusive of any
added blood, hair, hoof, horn, hide trimmings, manure, stomach and rumen
contents except in such amounts as may occur unavoidably in good processing
practices. It shall not contain added extraneous materials not provided for
by this definition.The Calcium (Ca) level shall not exceed the actual level
of Phosphorus (P) by more than 2.2 times. It shall not contain more than 12%
P... 阅读全帖
o**s
发帖数: 3412
42
I dun feed fish flavored cans, skeptical about brands that offer many fish
flavored food, such as weruva.
i try to feed species appropriate meat, chicken, duck, turkey, rabbit, with
exception of lamb. Occasionally i feed beef, pork, fish, seafood.
mercury is a concern, allergy also, and some say cats easily get addicted to
fish flavor won't eat a balanced diet. nutrient profile different in fish
vs. birds vs. small mammals?
m*******y
发帖数: 14292
43
awwwwwwwwwwww mammal
S********t
发帖数: 18987
44
黄咪小恙后又恢复了往常的健康,每天在窗口的阳光里把自己晒成一只太阳能小黄咪,
然后在晚上被窝里把小热量反馈给猫爸猫妈。
黄咪这么喜欢太阳,也向往着到处转转,看看外面的世界。
因此周末,只要有闲,带上黄咪,推上他的小车,游游周边,正好增进亲子关系。这一
次是黄咪的寻根之旅
湖与森林市的heritage hill是个小小的历史公园,早期传教时期的老泥土房,
我一直认为黄咪是具有墨西哥血统的,因此它的墨西哥名字是Juan,看到这些老家什,
黄咪也涌起一翻寻根的情怀。
在大仙人掌树下,黄咪依靠在猫爸肩头,似乎想起了什么,眼中分明有些晶莹。
坐在两百年的小学台阶前,黄咪说 很久很久以前在墨西哥,有一只黄咪。。。
还有印第安遗迹,大概500年了,油然有一种 远古的,史前的感脚。。。。或许黄咪是
一只印地安毛咪?
离开古迹,来到Pacific Marine Mammal Center
这里是受伤海洋动物的救助站,主要是黄咪的远洋亲戚海狮,上次黄咪船长出海的时候
就见过他们,
当然要在大自然里自由自在才是海狮该做的,因此黄咪捐了点私房钱,希望他们能尽快
好起来。
告别海狮,去海边转转,黄咪最喜欢还是海... 阅读全帖
b*****r
发帖数: 4717
45
re, 兔子是cache mammal, 母乳蛋白和脂肪含量高,兔妈一般藏好宝宝,每隔12小时或
更长回来喂一次
b******a
发帖数: 12216
46
来自主题: pets版 - 科普系列
第二篇——Backyard Hunters
Scientists from the Smithsonian Conservation Biology Institute and the U.S.
Fish and Wildlife Service recently released a report in the journal Nature
Communications that sought to estimate the number of wildlife killed by cats
in the United States. The mainstream media seized on the study, which used
older, small studies to conclude that cats are killing billion of birds and
mammals each year. Within two days, the story generated significant outcry
from cat lovers and othe... 阅读全帖
R*********a
发帖数: 514
47
为什么carb多的猫粮不太好(长,欢迎校正/补充)
都是肉食动物,我们什么时候看到老虎啊狮子啊豹子啊,吃玉米,土豆,大米,大黄豆
,豌豆神马的。都是肉食动物,为什么要让猫儿吃呢?
小猫的生命只有一次,比我们短很多。我们都希望他们能健健康康,快快乐乐。
饮食是小猫健康情况最大的影响因素。所以健康平衡的饮食很重要。
不健康的饮食,会增加小猫生病的概率(肥胖,糖尿病,泌尿系统疾病等),即会让猫
儿和主人受很多不必要的肉体和精神的痛苦,也会增加主人的经济负担。
所以还不如,pay in advance, 尽量让小猫吃的健康一点点。
1.carb对猫体不好,会增加肾脏和泌尿系统疾病的概率。
2.carb不能提供猫体需要的营养。猫无法依靠谷物合成体内必需营养物质。
3.摄入大量carb容易产生饮食紊乱,抑制猫吃蛋白质,造成恶性循环。
4.carb对牙齿健康不好 (牙痛不是病,痛了真要命)
为什么商店买的干猫粮会有carb呢?
主要的原因是为了减低成本啊,成本低+卖的贵&多=多赚钱
另外,原料和成品相对易于保存
喂猫粮相对便宜,省事儿,但是考虑到可能产生的各种问题,
不如raw feeding或者罐... 阅读全帖
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