l****z
发帖数: 29846 | 1 【 以下文字转载自 Biology 讨论区 】
发信人: Chamgrape (香槟葡萄), 信区: Biology
标 题: 这期Nature Biotechnology上关于转基因的文章
发信站: BBS 未名空间站 (Tue Sep 10 14:15:59 2013, 美东)
http://www.nature.com/nbt/journal/v31/n9/full/nbt.2700.html?WT.
真正想了解而不是想吵架的同学可以看看
还可以给身边对这个有疑问的朋友看看
也提到了去年法国的那个老鼠实验
还有黄金大米
Contrary to popular belief
Nature Biotechnology 31, 767 (2013) doi:10.1038/nbt.2700
Published online 10 September 2013
Three decades after transgenes were first introduced into plants, why do so
many consumers remain so negative abou... 阅读全帖 |
|
w*******r
发帖数: 131 | 2 Whole Foods = Whole Paycheck which no longer equals organic....
http://www.prwatch.org/node/9903
Whole Foods Market Caves to Monsanto
Submitted by Anne Landman on January 28, 2011 - 3:09pm
WholeFoodsMarketAfter 12 years of battling to stop Monsanto's genetically-
engineered (GE) crops from contaminating the nation's organic farmland, the
biggest retailers of "natural" and "organic" foods in the U.S., including
Whole Foods Market (WFM), Organic Valley and Stonyfield Farm, have agreed to
stop oppo... 阅读全帖 |
|
x*****u
发帖数: 4750 | 3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wolfe Ranch Fruit Availability
Memorial Day Weekend 2011
white peach tree
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wednesday May 25, 2010
Hello faithful fruit followers!
Another summer fruit season has finally arrived.
This email confirms that you are signed up for our fruit-update emails and
you will receive weekly updates on all our fruit as the season progresses.
Due to abnormally cool weather all crops seem to be a little late this yea... 阅读全帖 |
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s****2
发帖数: 4569 | 4 来自主题: SanFrancisco版 - 摘樱桃归来 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wolfe Ranch Fruit Availability
Memorial Day Weekend 2011
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wednesday May 25, 2010
Hello faithful fruit followers!
Another summer fruit season has finally arrived.
This email confirms that you are signed up for our fruit-update emails and
you will receive weekly updates on all our fruit as the season progresses.
Due to abnormally cool weather all crops seem to be a little late this year,
but we are ha... 阅读全帖 |
|
z**n
发帖数: 22303 | 5 孟山都与FDA和EPA公用职员：美国特色滴官商勾结zt
http://blog.sina.com.cn/s/blog_72ab7f8f0102dvj7.html
孟山都与美国食品与药物监管局FDA和环境保护局EPA
公用职员：美国特色滴官商勾结
转基因作物缩写GMO反过来拼是OMG!!! 【啊！额滴上帝！快救人呀！】<原标题
GMO is OMG backwards!!!
By Holladay Allen < 原文作者
Native Foods Cafe Tribe Member <“有机食品咖啡厅”族员
翻译：tothedust 2011-10-10
Do you know Monsanto? If you don’t, you should.
您知道孟山都吗？ 若您还不知道，那您该知道知道啦。
Monsanto is THE world’s largest seed company, which means
it owns a majority of the seeds that are planted for the commercial market.
孟山都，是世界上最... 阅读全帖 |
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T*******m
发帖数: 27308 | 6 上个世纪的时候，我们经常听老师说，21世纪将是生物世纪！现在看来，老师们没有骗
我们。21世纪还真是生物世纪，是转基因生物的世纪。在美国，转基因食品特别多，无
孔不入，无处不在。
朋友，你害怕转基因吗？如果你害怕，那最好不要去美国的餐馆吃饭了，因为在餐馆吃
到转基因食品的可能性实在太大了。
空口无凭，举例说明。你去餐馆吃晚饭，点了一盘人人爱吃的麻辣豆腐。如果这盘麻辣
豆腐是用玉米油烧的，那这盘麻辣豆腐含有转基因成分的可能性是多大？如果这盘麻辣
豆腐是用菜籽油烧的，那这盘麻辣豆腐含有转基因成分的可能性又是多大呢？
大家知道，豆腐是大豆做的。在美国，94%的大豆（soybean）是抗除草剂的转基因大豆
（1），所以，你在餐馆吃的麻辣豆腐，差不多有94%的可能性是转基因的。在美国，89
%的玉米是转基因的（1），所以，用来烧菜的玉米油有89%的可能性是转基因的。计算
一下，用玉米油烧的麻辣豆腐含转基因成分的概率是（1-0.06*0.11）*100%=99.34%。
在美国和加拿大，转基因油菜（canola）的种植面积占所有油菜面积的90%（2）。也就
是说，餐馆用的菜籽油含转基因成分的可能性... 阅读全帖 |
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T*******m
发帖数: 27308 | 7 上个世纪的时候，我们经常听老师说，21世纪将是生物世纪！现在看来，老师们没有骗
我们。21世纪还真是生物世纪，是转基因生物的世纪。在美国，转基因食品特别多，无
孔不入，无处不在。
朋友，你害怕转基因吗？如果你害怕，那最好不要去美国的餐馆吃饭了，因为在餐馆吃
到转基因食品的可能性实在太大了。
空口无凭，举例说明。你去餐馆吃晚饭，点了一盘人人爱吃的麻辣豆腐。如果这盘麻辣
豆腐是用玉米油烧的，那这盘麻辣豆腐含有转基因成分的可能性是多大？如果这盘麻辣
豆腐是用菜籽油烧的，那这盘麻辣豆腐含有转基因成分的可能性又是多大呢？
大家知道，豆腐是大豆做的。在美国，94%的大豆（soybean）是抗除草剂的转基因大豆
（1），所以，你在餐馆吃的麻辣豆腐，差不多有94%的可能性是转基因的。在美国，89
%的玉米是转基因的（1），所以，用来烧菜的玉米油有89%的可能性是转基因的。计算
一下，用玉米油烧的麻辣豆腐含转基因成分的概率是（1-0.06*0.11）*100%=99.34%。
在美国和加拿大，转基因油菜（canola）的种植面积占所有油菜面积的90%（2）。也就
是说，餐馆用的菜籽油含转基因成分的可能性... 阅读全帖 |
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b*****g
发帖数: 2727 | 8 以前贴过
Resized Plustek scan
Plustek crop #1
Plustek crop #2
Epson crop #1
Epson crop #2 |
|
t****g
发帖数: 35582 | 9 测试镜头:
Canon EF 24-105/4L IS USM
这个镜头是Canon去年秋天刚刚推出的高级旅游用标准变焦镜头，装备了Canon最新的
IS图像稳定器，号称可以达到四挡的防抖，在这里做一个测试:
测试条件:
镜头使用105mm望远端，拍摄一个大约一米多远的压缩空气罐，照明条件大约为:
ISO 400, F/4，快门速度约1/8s。
一共拍摄十张，非连拍，一次一次的举起相机，按快门，拍摄。然后100% crop检查因为
手抖对画质的影响。对比的画面是多开一盏灯，快门速度则达到1/40s然后用脚架拍摄
的。
下图是完全排除手震，用脚架拍摄的对比图（中心100% crop)
下面是10次，快门速度1/8s，手持打开IS的拍摄图(中心100% crop)
下面是十次拍摄中，最虚的那一张，放到全屏观看(1024x853)的效果图
结论:
可以明显看出，IS的确可以以相当高的成功率实现四挡的防抖，105mm端，1/8s手持，
即使
以100% crop的苛刻标准来衡量，也可以达到大约80%的拍摄成功率。即便是最虚的一张，
缩小到全屏幕观看的尺寸就完全没有问题，应对网上交流和8x10" |
|
k****t
发帖数: 12697 | 10 可见, 同一个镜头在相同的对焦距离,CROP的景深更小. 如果在DISTANCE SCALE 上MARK
CROP SENSOR 的DOF, BRACKET 比原来FF 的应该更小. 但这并不意味着在使用上CROP
的景深真的更小, 实用上CROP 为了拍同样的景, 必须退后, 用更大的对焦距离, 也就
是说BRACKET 是小了, 但对焦环拧到更大的距离上, 这BRACKET COVER的距离段反而大
了. |
|
x****c
发帖数: 25662 | 11 ☆─────────────────────────────────────☆
blueashes (德叔) 于 (Sat Apr 2 15:20:00 2011, 美东) 提到:
之前犹豫过到底这个250刀的Holder值不值，因为9000ED带的几个基本Holder除了Xpan
其它的都能解决。同时还考虑要不要干脆多花100刀上869GR。最后用了一番后，我庆幸
买了这个Holder，很值而且是超值。
值的原因主要是扫Xpan和中副，中副的话不用操心片子放不好了，放上就扫，省心。
Xpan的Batch Scan更是NB。
先说中副，有人觉得Glass Holder的画质不好，我扫出来觉得还可以，不影响画质，这
里有比较，每一对比较上面是869G隔着玻璃扫，下面是没有玻璃的869S裸扫，
首先，Glass对细节没有影响，影响到的是Contrast，但是不大，可以轻松调回来。在
颜色方面，Glass出来的稍暖，这个看个人口味，可以调回来或者不变。
869G最牛的是扫Xpan，不是一般牛，是非常牛。贵100刀的869GR只能每次扫一张，但是
869G竟然可以连续扫三张，只要将... 阅读全帖 |
|
|
s*****e
发帖数: 21415 | 13 ☆─────────────────────────────────────☆
TOEIC (吐一口) 于 (Fri Apr 29 23:05:36 2011, 美东) 提到:
k20d入手以来还处在理解和学习如何使用的阶段，到现在还不习惯，还手忙脚乱的乱按键和转轮。。。
虽然也几百张拍出去了，基本都在卡里，也没在意，买的SD card reader到了，今天
backup出来了，本来准备都删掉的，随手一张张看过来，哦，还是很感动的，比如下边这张，是试验 正午下的对焦和平衡的，中心点100% cropping后，看起来细节很好哦，情不自禁的上来夸夸俺家k20d, 16-45mm f/4
把缩小过的原图也放上，这样大概有个概念。
P mode 1/250 f6.7 ISO100 AWB 时间正午 11:42
☆─────────────────────────────────────☆
CHF (无) 于 (Fri Apr 29 23:06:49 2011, 美东) 提到:
不错，很肉感
☆─────────────────────────────────... 阅读全帖 |
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z***i
发帖数: 1122 | 14 多谢,多谢.自己算了算:
RX100, crop 2.7, f/1.8, effective 4.9
G1X, crop 1.9, f/2.8, effective 5.3
LX7, crop 5.1, f/1.4, effective 7.1
X10, crop 4.1, f/2.0, effective 8.2
看来便携式还是RX100最好 |
|
l**4
发帖数: 2989 | 15 1.3x Crop挺有意思的
1.3x Crop
Get closer to your subject with the new 1.3x crop of DX sensor. Using
the 1.3x crop option allows the 51 autofocus points to cover almost the
entire frame as well as providing longer equivalent focal lengths and faster
image processing. |
|
J********o
发帖数: 17447 | 16 说白了就是你自己衡量下用1.6x的18mp跟22mp去crop中间1.6x那部分的像素哪部分得到
的素质更高
原理就是在全副的像厂里用一个18mp的残副cmos去crop, 或者用一个FF然后在上面crop
一个残副, 假设你必须用iso 3200, 7D已经没法看了, 5D3依然犀利, 你crop中间的就
好了
残副转焦距基本是呵呵 |
|
J********o
发帖数: 17447 | 17 最近着实太冷, 懒得动弹.. 再来拍片水平越来越烂, 怎么拍都不好看. 说来扫街最重
要是细心和耐心, 可能最近不在这个情绪上吧.. 共勉共勉
机器还是很喜人的.
没玩几天, 慢慢更新吧, 还没摸索很清楚很透彻, 大家多讨论
做工方面很是不错, 尽管感觉手柄想贴上的哈哈, 有点突兀, 不过捏着很舒服, 手柄内
侧甚至还有小凹槽给小拇指无名指放, nice.. 整体上细节上都是上品, 不亏是sony.
不过可能最近胶片摸得多, 感觉数码的好金贵.. 都不舍得使劲噪..
操控基本跟rx1一致, 两个customize键很方便, 快门按钮的感觉很操蛋, 位置也很操蛋
..
吐槽个小细节, LCD/EVF切换依然没有独立的一键式, 从nex-6就是, 看似小, 但真的是
很不舒服的设计. Fuji的话, 在屏幕旁边有个专门按键. 很多时候, 只需要evf的, 只
是偶尔回来看图切
到LCD. Sony这样的设计, 我没拍完一张, 拿下来, LCD开始亮, 知道休眠开始, 其实是
相当费电的.
峰值对焦不错, 但放大操作起来就不是很顺手.. 不知道能不能设定接手动头后, 一个
波轮变成变焦放大的... 阅读全帖 |
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x****k
发帖数: 661 | 18 网上常说的一个argument是如果你要crop的话，还不如用aps-c。
7d2和1d2的像素数差不多，如果crop 1d2中间crop sensor大小的幅面的话，同样的镜
头条件下接收到的光学信息和7d2的一样，但是这个时候1d2那个crop只有大概21MP/1.6
*1.6=8MP像素，然后相对来说7d2的21MP sampling更多一些。两张照片zoom-in到同样
的frame的话应该7d2占便宜（不考虑noise）。
不过我上面的论点是镜头其实没有那么好的resolving power所以这个好处不明显。倒
是Noise会negatively affect resolution。
网上这么测试的人很少。 |
|
c*****e
发帖数: 757 | 19 A7iii 24p是6k超采的4k，我不知道可换相机里除了A6300/6500，A9，还有哪个能做到
这个。A7iii比A6500提高的是视频的果冻有所减轻。
你r3 full frame 4k的画质肯定是赶不上A7iii的。
6k超采数据量太大，30p就只能有些crop，但是1.2的crop（这时也有5k的超采）已经比
佳能单反全系都强了（佳能目前还都是1:1取样）。
24p，180度设置好快门，除非你拍运动特别快的物体，否则都是很流畅的。
r3连拍时，把人眼和人像识别关掉，就用广域或区域afc追焦，效果会好很多。眼控还
要连拍的话，需要stacked sensor的机型。
: A7m3发布的时候我一听参数就庆幸买了R3了，就是听到30p要crop。我当
初不考
虑A6500
: 的理由就是讨厌他们优化了24p却在30p拆烂污，搞crop，居然过了两年还
是这样。
: 那些所谓的大师喜欢拍24p，把24p吹成dreamy，艺术性，filmic。。把
30p/60i
贬称为
: “看起来电视感太浓，像肥皂剧的感觉”。。这些都不管... 阅读全帖 |
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c*****e
发帖数: 757 | 20 A7iii 24p是6k超采的4k，我不知道可换相机里除了A6300/6500，A9，还有哪个能做到
这个。A7iii比A6500提高的是视频的果冻有所减轻。
你r3 full frame 4k的画质肯定是赶不上A7iii的。
6k超采数据量太大，30p就只能有些crop，但是1.2的crop（这时也有5k的超采）已经比
佳能单反全系都强了（佳能目前还都是1:1取样）。
24p，180度设置好快门，除非你拍运动特别快的物体，否则都是很流畅的。
r3连拍时，把人眼和人像识别关掉，就用广域或区域afc追焦，效果会好很多。眼控还
要连拍的话，需要stacked sensor的机型。
: A7m3发布的时候我一听参数就庆幸买了R3了，就是听到30p要crop。我当
初不考
虑A6500
: 的理由就是讨厌他们优化了24p却在30p拆烂污，搞crop，居然过了两年还
是这样。
: 那些所谓的大师喜欢拍24p，把24p吹成dreamy，艺术性，filmic。。把
30p/60i
贬称为
: “看起来电视感太浓，像肥皂剧的感觉”。。这些都不管... 阅读全帖 |
|
w*l
发帖数: 2550 | 21 Why Aren’t G.M.O. Foods Labeled?
http://opinionator.blogs.nytimes.com/2011/02/15/why-arent-g-m-o
If you want to avoid sugar, aspartame, trans-fats, MSG, or just about
anything else, you read the label. If you want to avoid G.M.O.’s —
genetically modified organisms — you’re out of luck. They’re not listed.
You could, until now, simply buy organic foods, which by law can’t contain
more than 5 percent G.M.O.’s. Now, however, even that may not work.
In the last three weeks, the U.S. Department of Ag... 阅读全帖 |
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C*******e
发帖数: 4348 | 22 http://www.nature.com/nbt/journal/v31/n9/full/nbt.2700.html?WT.
真正想了解而不是想吵架的同学可以看看
还可以给身边对这个有疑问的朋友看看
也提到了去年法国的那个老鼠实验
还有黄金大米
Contrary to popular belief
Nature Biotechnology 31, 767 (2013) doi:10.1038/nbt.2700
Published online 10 September 2013
Three decades after transgenes were first introduced into plants, why do so
many consumers remain so negative about genetically modified (GM) food?
GM food has an uncanny ability to spook consumers. It does not matter that
many of us have been consuming GM ... 阅读全帖 |
|
l*****o
发帖数: 61 | 23 有一组数据。Dependent variable yield, independent variables: rate, timing,
form, crop, tillage, year, site. 所有independent variables都是categorical
variable.
我用proc mixed 看这些independent variables 怎么影响dependent variable的：
proc mixed data=st0810;
class year site timing rate form Crop Tillage;
model yield=rate timing form Crop Tillage year;
random site;
lsmeans Nrate nform prevcrop tillage/adjust=t... 阅读全帖 |
|
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c***r
发帖数: 4631 | 25 不知道这样的东西算书么， 1772 BCE的样子。刻的内容如下：
CODE OF LAWS
1. If any one ensnare another, putting a ban upon him, but he can not prove
it, then he that ensnared him shall be put to death.
2. If any one bring an accusation against a man, and the accused go to the
river and leap into the river, if he sink in the river his accuser shall
take possession of his house. But if the river prove that the accused is not
guilty, and he escape unhurt, then he who had brought the accusation shall
be put to death, while he... 阅读全帖 |
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s******n
发帖数: 518 | 26 这段：Monsanto invented the herbicide glyphosate and brought it to market
under
the trade name Roundup in 1974, after DDT was banned. But it wasn’t until
the late 1990s that the use of Roundup surged, thanks to Monsanto's
ingenious marketing strategy. The strategy? Genetically engineer seeds to
grow food crops that could tolerate high doses of Roundup. With the
introduction of these new GE seeds, farmers could now easily control weeds
on their corn, soy, cotton, canola, sugar beets and alfalfa crop... 阅读全帖 |
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s********n
发帖数: 26222 | 28 Go to hell with US GMO crops. The history told us the US had banned food
exports to China for 10+ years after 1949. There is no reason to believe US
will not do it again. China can feed Chinese with crops invented by Chinese
scientists. We will continue to be an independent country in term of the
quantity and quality of food production. We don't need US bastards to
educated us about the importance of crops.
Once again, you should go to hell with all your US greed and ignorance.
of
need
. |
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V*E
发帖数: 1642 | 29 Although they had first sighted land off Cape Cod they did not settle until
they arrived at Plymouth, which had been named by Captain John Smith in 1614
. It was there that the Pilgrims decide to settle. Plymouth offered an
excellent harbor. A large brook offered a resource for fish. The Pilgrims
biggest concern was attack by the local Native American Indians. But the
Patuxets were a peaceful group and did not prove to be a threat.
The first winter was devastating to the Pilgrims. The cold, snow... 阅读全帖 |
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s*******e
发帖数: 1544 | 30 http://www.usnews.com/science/articles/2009/10/28/the-hidden-co
Contents Provided by National Science Foundation:
University Park, Pa.—Genetically modified squash plants that are resistant
to a debilitating viral disease become more vulnerable to a fatal bacterial
infection, according to biologists.
"Cultivated squash is susceptible to a variety of viral diseases and that is
a major problem for farmers," said Andrew Stephenson, Penn State professor
of biology. "Infected plants grow more slowly a... 阅读全帖 |
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g********y
发帖数: 992 | 31 初中英语第三册好像是，海鸥纪念碑啥的，并且去犹他盐湖城的摩门教的庙里看过那个
纪念碑的，SEAGULL MEMORIAL 当时英文全文都要背诵的 看到一堆人怀旧，呵呵
THE SEAGULLS OF SALT LAKE CITY
Salt Lake City is a beautiful city in the west of North America. The name
comes from a great lake nearby. The city lies in a valley with high
mountains all around it. But long ago there was almost nothing in this place
and were very few people living here.
More than a hundred years ago, a group of men, women and children moved
from the east to the west. They had travelled a long way... 阅读全帖 |
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b**a
发帖数: 207 | 32 mark
THE SEAGULLS OF SALT LAKE CITY
Salt Lake City is a beautiful city in the west of North America. The name
comes from a great lake nearby. The city lies in a valley with high
mountains all around it. But long ago there was almost nothing in this place
and were very few people living here.
More than a hundred years ago, a group of men, women and children moved
from the east to the west. They had travelled a long way. At last these
brave people came to the great mountains by the salt lake. They... 阅读全帖 |
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c****i
发帖数: 688 | 33 大民主国尽管降价在国际市场上推销粮食，仍然卖不出去，粮食堆在港口烂掉。
同时，印度2012年营养不良儿童占44%， 人民只吃两顿饭。饥饿指数23%，是全世界三
个饥饿指数正增长的国家。和索马里，刚果并列。
India's grain mountain grows despite push for exports
SINGAPORE/NEW DELHI (Reuters) - India will be unable to consume or export
enough wheat and rice to rein in a record stockpile after another bumper
harvest, a failure that means crops risk rotting in fields instead of being
sold on world markets to cash in on higher prices.
In March, farmers in India will begin to harvest the sixth consecutiv... 阅读全帖 |
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r*******r
发帖数: 2565 | 34 你不推广，别人推广。
转基因种植前5大国。中国已经落后太多了。人口还是第一大国。
Extent of worldwide use of GM crops[edit source]
Country
2010– planted area (million hectares)[81]
2009 – Agriculture area (million hectares)[82]
Percentage of agriculture area with GM crops
Biotech crops
USA 66.8 403 16.56% Soybean, Maize, Cotton, Canola, Squash, Papaya, Alfalfa,
ugarbeet
Brazil 25.4 265 9.60% Soybean, Maize, Cotton
Argentina 22.9 141 16.30% Soybean, Maize, Cotton
India 9.4 180 5.22% Cotton
Canada 8.8 68 13.02% Maize, Soybean, Canola, Su... 阅读全帖 |
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l***s
发帖数: 841 | 35 那好，给你贴个AAAS的statement.这机构足够主流了吧。
Moreover, the AAAS Board said, the World Health Organization, the American
Medical Association, the U.S. National Academy of Sciences, the British
Royal Society, and “every other respected organization that has examined
the evidence has come to the same conclusion: consuming foods containing
ingredients derived from GM crops is no riskier than consuming the same
foods containing ingredients from crop plants modified by conventional plant
improvement techniques.”
... 阅读全帖 |
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z****0
发帖数: 3942 | 36 Are foods made using biotechnology safe to eat?
by Jonathan Strickland
Agricultural biotechnology is the science of using genes to alter crops. Why
would scientists want to fiddle with a plant's genes? The reasons range
from improving crop yields to designing plants that are resistant to pests
and disease. But are these genetically modified foods safe to eat?
The short answer is yes. Scientists around the world have conducted multiple
studies on genetically modified food and found that the food ... 阅读全帖 |
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B********D
发帖数: 443 | 37 Chinese Implicated in Agricultural Espionage Efforts
http://www.nytimes.com/2014/02/05/us/chinese-implicated-in-agri
KANSAS CITY, Mo. — The case of the missing corn seeds first broke in May
2011 when a manager at a DuPont research farm in east-central Iowa noticed a
man on his knees, digging up the field. When confronted, the man, Mo
Hailong, who was with his colleague Wang Lei, appeared flushed. Mr. Mo told
the manager that he worked for the University of Iowa and was traveling to a
conference ... 阅读全帖 |
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G****r
发帖数: 5579 | 38 sn’t the produce department in my grocery store full of products from GMOs?
Question Submitted By: beckster17 from San Francisco, California **
Questions submitted to GMO Answers appear as written at the time of
submission. Question are reviewed to ensure they conform with our house
rules, but are never edited or altered by GMO Answers.
Notification Preferences
A:Expert Answer
By: Alan McHughen, CE Biotechnology Specialist and Geneticist on Tuesday, 7/
30/2013 9:02 pm
Actually, only a few produ... 阅读全帖 |
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x******g
发帖数: 33885 | 39 老千们来说说这petition的论点论据有科学道理吗？
I'm Peter Stocker of Friends of the Earth, and I started a petition to the U
.S. Department of Agriculture, which says:
As someone who cares about the health of our families, our food system, and
our environment, I was very disappointed by your recent approval of Monsanto
's dicamba-resistant cotton and soybeans.
Dicamba has been linked to a range of adverse human health impacts, such as
reproductive and developmental harm. Workers, farming communities, and
children a... 阅读全帖 |
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n**e
发帖数: 2026 | 40 转基因农作物与传统农作物同样安全无害，一直以来被广为传颂，成为转基因的护身法
宝。最近卢大儒与崔永元的当面争论把转基因安全性的问题再次堆上媒体头条。卢教授
指出，科学家业内共同体关于转基因食品的安全性已经有了共识。作为转基因专家的卢
教授可以不知道黄金大米有几个人工基因。但是，他应该知道世界上没有一个叫做“科
学家业内共同体”的东西。也应该知道他所谓的“转基因安全共识”究竟是怎么回事。
我们首先要知道什么是科学共识。共识在人们的社会生活中通常指某种共同的价值观或
者某种约定俗成的道德标准。但是科学共识不是一个形而上的概念。科学共识指某种科
学事物的真理性得到一再检验，所有的实证结果都支持其正确无误，从来没有出现相反
的证据。科学业内人士已经不再表示怀疑也没有继续争论的必要。
简单的科学共识比如生物体是由细胞组成的，地球是围绕太阳旋转。再比如进化论是科
学共识，理由有如下两点。第一，所有的已知证据都证明进化论的核心——基因的随机
突变和自然选择，是正确的。第二，没有任何已知的证据证明这个理论是错误的。进化
论的证据链上还有很多缺失的环节，有些证据可能永远也不可能找到。但是，这无损进
化论... 阅读全帖 |
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l****p
发帖数: 27354 | 41 美国NAS相对权威的报告，我来个摘要里面的片段，有关增产的：
There is disagreement among researchers about how much GE traits
can increase yields compared with conventional breeding. In addition to
assessing detailed surveys and experiments comparing GE with non-GE
crop yields, the committee examined changes over time in overall yield per
hectare of maize, soybean, and cotton reported by the U.S. Department of
Agriculture (USDA) before, during, and after the switch from conventionally
bred to GE varieties of these crops. No ... 阅读全帖 |
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s******n
发帖数: 518 | 42 【 以下文字转载自 History 讨论区 】
发信人: shaodian (有熊), 信区: History
标 题: 美国禁止GMO喂养野生动物
发信站: BBS 未名空间站 (Sat Mar 31 23:00:08 2018, 美东)
美国禁止GMO喂养野生动物
https://www.refugeassociation.org/2014/08/u-s-fish-and-wildlife-service-bans
-gmos-and-neonicotinoid-insecticides/
美内政部FWS发文要求各地，在２０１６年１月之后，不再使用GMO（转基因生物）喂养
野生动物
U.S. Fish and Wildlife Service Bans GMOs and Neonicotinoid Insecticides
Refuge News
August 8, 2014
by National Wildlife Refuge Association
In support of their mission to conserve wildlife, Jim Kurth... 阅读全帖 |
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n****G
发帖数: 1191 | 43 As Canola Spat Steals Headlines, China Quietly Buys Canada Crops
https://www.bloomberg.com/news/articles/2019-08-13/as-canola-spat-steals-
headlines-china-quietly-buys-canada-crops?srnd=premium-canada
As the very public China-Canada canola spat drags on, buyers from the Asian
nation have been quietly purchasing other Canadian farm products.
Canada shipped 1.9 million metric tons of wheat to China in the crop year
through June, up 92% from a year earlier, Canadian Grain Commission data
show. Cano... 阅读全帖 |
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D****8
发帖数: 408 | 44 鸽子的神奇地方很多的
鸽子父母给雏鸽喂养的成分是鸽乳crop milk，很精致的喂养
不是叼个虫子，扔雏鸽嘴里就完事了
目前貌似只知道鸽子，火烈鸟和帝企鹅是用crop milk喂养下一代的
更神奇的是，雄鸽子也能分泌crop milk，下完蛋后，鸽爸和鸽妈的工作量是一样一样的 |
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V*E
发帖数: 1642 | 45 【 以下文字转载自 Military 讨论区 】
发信人: VUE (信人), 信区: Military
标 题: Re: Sao Mang: thanksgiving
发信站: BBS 未名空间站 (Fri Nov 26 23:07:33 2010, 美东)
Although they had first sighted land off Cape Cod they did not settle until
they arrived at Plymouth, which had been named by Captain John Smith in 1614
. It was there that the Pilgrims decide to settle. Plymouth offered an
excellent harbor. A large brook offered a resource for fish. The Pilgrims
biggest concern was attack by the local Native American Indians. But t... 阅读全帖 |
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d******i
发帖数: 3957 | 46 【 以下文字转载自 Military 讨论区 】
发信人: nile (nile), 信区: Military
标 题: 转基因安全“科学共识”原来如此
发信站: BBS 未名空间站 (Sat Apr 11 11:28:04 2015, 美东)
转基因农作物与传统农作物同样安全无害，一直以来被广为传颂，成为转基因的护身法
宝。最近卢大儒与崔永元的当面争论把转基因安全性的问题再次堆上媒体头条。卢教授
指出，科学家业内共同体关于转基因食品的安全性已经有了共识。作为转基因专家的卢
教授可以不知道黄金大米有几个人工基因。但是，他应该知道世界上没有一个叫做“科
学家业内共同体”的东西。也应该知道他所谓的“转基因安全共识”究竟是怎么回事。
我们首先要知道什么是科学共识。共识在人们的社会生活中通常指某种共同的价值观或
者某种约定俗成的道德标准。但是科学共识不是一个形而上的概念。科学共识指某种科
学事物的真理性得到一再检验，所有的实证结果都支持其正确无误，从来没有出现相反
的证据。科学业内人士已经不再表示怀疑也没有继续争论的必要。
简单的科学共识比如生物体是由细胞组成的，地球是围绕太阳旋转。再比如进... 阅读全帖 |
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D*V
发帖数: 3096 | 47 大民主国尽管降价在国际市场上推销粮食，仍然卖不出去，粮食堆在港口烂掉。
同时，印度2012年营养不良儿童占44%， 人民只吃两顿饭。饥饿指数23%，是全世界三
个饥饿指数正增长的国家。和索马里，刚果并列。
India's grain mountain grows despite push for exports
SINGAPORE/NEW DELHI (Reuters) - India will be unable to consume or export
enough wheat and rice to rein in a record stockpile after another bumper
harvest, a failure that means crops risk rotting in fields instead of being
sold on world markets to cash in on higher prices.
In March, farmers in India will begin to harvest the sixth consecutiv... 阅读全帖 |
|
l***n
发帖数: 731 | 48 http://embeds.blogs.foxnews.com/2008/10/22/palin-in-corn/
AKRON, OH – On our flight from Toledo to Akron the flight attendants on the Palin plane told us to look out the left side of our window for a once in a life time glimpse at a crop circle. But, not just any crop circle made by a mischievous farmer or actual aliens, but one that is cultivated to “resemble” Sarah Palin.
The corn maze is located in the appropriate town of Whitehouse, Ohio. On our first pass by the Palin crop “circle,” not eve |
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