f**s
发帖数: 2225 | 1 有的州，比如我们这里，crossbow和firearm的猎季是一样时间，crowbow和rifle哪个
更适合打猎比较明显吧，呵呵
只有compound bow的猎季才长 |
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T*R
发帖数: 25894 | 2 there is usually a poundage requirement for hunting. as long as your bow can
meet that requirement, it doesn't matter if it is compound or recurve. |
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T*R
发帖数: 25894 | 3 I think "composite" mostly means the material used in the bow is layered. "
compound" is a construction term. |
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t********n
发帖数: 728 | 4 For Hunting: Crossbow
For Fun: Compound Bow
For Saving: Gun |
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a***a
发帖数: 8941 | 7 is it the same for a compound bow? |
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N*********r
发帖数: 1190 | 8 compound的也是。多少年一换就看用的频繁程度了。 |
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z**j
发帖数: 1579 | 9 昨天收拾basement，发现好几个之前刷墙用过的装primer和装Joint Compound的塑料空
桶。里面的残余物质早就干透了。这几个桶的大小都是2 Gallon的，觉得大小挺合适，
有盖子，有把手，不知能不能利用一下在种菜种花里，比如早期盆栽育苗或者装个厨余
什么的。就是不知会不会有有害物质对土壤或者植物造成污染。
如果大家不建议，明天正好是垃圾日，我就把它们清理了。
谢谢。 |
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d*****0
发帖数: 68029 | 10 任何cooler，不管是买的还是CPU里的都有thermal compound |
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c*********s
发帖数: 279 | 11 新买一个i7 2600k想用一个好点的paste，就从mc买了个arctic silver 5，但拆开发现
“this product is a thermal compound, not a thermal adhesive. it will not
dry or set and cannot be used as a glue” 请问我需要和其他带粘性的thermal
grease混和着用么？ |
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r*******e
发帖数: 7583 | 12 除非你想把散热器永远粘死在CPU上才需要adhesive
否则就用你的compound就好了 |
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s***o
发帖数: 1189 | 13
这位朋友，我还真没见到op这么夸导师的。
对比自己的情况，就感慨了一下。
33k是不高。
但是我想这是funding里面出的钱，就算多给些，达到所谓NIH的标准4k又能说明导师人
品多少？对拿这个钱的人，又有多大的区别？
这个位置，课题明确，compound都找到了，就是要手稳的人做个分析测试。
风险不高，课题本身压力不大。我猜就是这个原因，才定了一年。
对于需要一个短期工作过度一下的人来说，是个很好的选择。 |
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c****d
发帖数: 681 | 14 有个compound，想筛一下它对不同cancer cell line的活性，有公司提供这样的服务吗
？谢谢了。 |
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m******t
发帖数: 109 | 15 最近做一个compound，想知道它的直接结合到什么蛋白上。正在试DARTS，效果不太好
。请问有其他方法吗。先谢了 |
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l*******1
发帖数: 16217 | 16 700多个compound喂老鼠，杀老鼠，一干就是8年 |
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o**********8
发帖数: 17 | 17 投JACS，需要给“Compound Characterization Check List”吗？好像JACS没有下载的
，Organic Letter倒是有。 |
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S********o
发帖数: 368 | 18 如果compound不易挥发的话,直接放真空干燥箱就好了吧
dmso的vapor pressure很高的 |
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w****l
发帖数: 632 | 19 sorry，是溶，打出来看不太清楚，就发出去了。呵呵。我compound量很少，也不太稳
定，不是合成出来的，是天然产物里提取出来的。N2好像不太干净，恩，我觉得。 |
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s*******y
发帖数: 105 | 20 实验室一直做计算的，最近老板想订购些chemical compounds来验证我们的结果,用他
们来treat
cancer cell line 看看他们是不是能抑制他们的生长，抑制的怎么样
以前从来没有搞过实验，大家一般都是从那订购啊，能给个链接什么的吗，多谢多谢！ |
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x*********i
发帖数: 170 | 21 Any one know, that why in Scifinder, there is one compound has CAS number,
but no reference, what do this mean?
thank you |
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s********s
发帖数: 579 | 22 希望大牛可以共享一下:Chemistry of Heterocyclic Compounds: Pyridine and its
Derivatives, Volume 14
谢谢啦 |
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a*****e
发帖数: 97 | 23 Run on LCMS, peak shows [M+H]222, [M+Na]244 under ESI positive mode.
UV-Vis shows a peak at 406nm(span 320-480nm) and the other at 264nm(spans
230-280nm).
We suspect it may be a quinone.
But MS/MS did not help much since the small molecule.
Went to Dictionary of natural product no luck.
Anyone help to identify the compound?
Thanks. |
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a*****e
发帖数: 97 | 24 Nice.
Tried on Synapts HRMS gives 222.0999 and search database did not give the
compounds have 406nm and 264nm maxim.
We even search the database called AntiBase and came with no success. Now
understand the untargeted analysis is no easy. |
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a*****e
发帖数: 97 | 25 We have very limited sample(mg) and this compound(peak in LC) is in the
mixture, means NMR not working here. |
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b*******g
发帖数: 1309 | 26 here is our strategy:
try higher resolution MS,like FT-MS and Obri, to get more accurate m/z less
than 1ppm or even smaller and better isotope pattern-->this will help you to
predict the formula
second, did you try MS/MS search in Metlin or other database? you may find
some possible functional group from the MS/MS fragment. Together with
formula, you may propose a structure.
With UV information, refine you structure and synthesize the
compound. Then try MS/MS again, to see whether it matches wi... 阅读全帖 |
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s*****e
发帖数: 1905 | 27 Coumarin type compound? |
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a*****e
发帖数: 97 | 28 Run on LCMS, peak shows [M+H]222, [M+Na]244 under ESI positive mode.
UV-Vis shows a peak at 406nm(span 320-480nm) and the other at 264nm(spans
230-280nm).
We suspect it may be a quinone.
But MS/MS did not help much since the small molecule.
Went to Dictionary of natural product no luck.
Anyone help to identify the compound?
Thanks. |
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a*****e
发帖数: 97 | 29 Nice.
Tried on Synapts HRMS gives 222.0999 and search database did not give the
compounds have 406nm and 264nm maxim.
We even search the database called AntiBase and came with no success. Now
understand the untargeted analysis is no easy. |
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a*****e
发帖数: 97 | 30 We have very limited sample(mg) and this compound(peak in LC) is in the
mixture, means NMR not working here. |
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b*******g
发帖数: 1309 | 31 here is our strategy:
try higher resolution MS,like FT-MS and Obri, to get more accurate m/z less
than 1ppm or even smaller and better isotope pattern-->this will help you to
predict the formula
second, did you try MS/MS search in Metlin or other database? you may find
some possible functional group from the MS/MS fragment. Together with
formula, you may propose a structure.
With UV information, refine you structure and synthesize the
compound. Then try MS/MS again, to see whether it matches wi... 阅读全帖 |
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s*****e
发帖数: 1905 | 32 Coumarin type compound? |
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c********r
发帖数: 2227 | 33 chemistry of nature compound, 47(4), 550-555 2011. By zengin gulay.
Please send to M************[email protected].
Later baozi will be sent to you for appreciation. Thanks so much. |
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A******y
发帖数: 2041 | 34 Polar compound is water distillation. It is part of organic chemistry lab.
E.J. Corey did some of that long long time ago. |
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c*****e
发帖数: 206 | 35 一般水加乙氰即可。看polar compound的酸碱性，可在提取溶剂中加点碱或酸。比较重
要的地方是要加入溶剂后用某种grinding或homogenize的机械手段来打碎植物tissue，
提高提取效率。
有时要看这个极性化合物有没有在叶片中形成conjugate，如果有的话，要再查些文献
看看怎么liberate你要的东西。 |
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j******0
发帖数: 258 | 36 organomercuric compound, 比如说,phenylmercuric acetate,与铝金属在室温下能反
应吗? |
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s*******a
发帖数: 17 | 37 A key energy company in China is opening a semiconductor engineer position
with payment as high as counterparts in USA industry and very competitive welfare.
Requirements:
On-hand experiences on III-V compound semiconductors either epitaxy or
fabrication.
Working Location:
Beijing and Wuxi
Please contact me through the board if any one is interested . |
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c******n
发帖数: 2439 | 38 在一般的hood里做high potent compound抽干，一定要在isolator里么？
如果可以在一般的filter里做的话，最大一般做到多少克呢？ |
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c*****a
发帖数: 845 | 39 你太牛了，在一般的hood里能做high potent compound吗？我都是在专门的实验室做，
做的时候穿全身防护服，带好防毒面具，从头到尾都包得严严实实的。 |
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c*****a
发帖数: 845 | 40 那当然，我们公司只有我做这些high potent compounds,其他人都不愿做。净会欺负中
国人，都让中国人来做这些毒性大的东西。在我的强烈要求之下才做出这些防护措施，
这两年来，现在我负责的这个实验室已经变成全公司最专业化的实验室，每次都成为客
户参观的亮点。 |
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b**o
发帖数: 5769 | 42 Anyone entered this, too?
I just joined a team because they have someone withdraw few days ago. Our
local competition is this Thursday. There are only two teams on each campus
and each campus can send one team to Florida.
But I have no idea be because we only had one semester compounding lab. |
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j****i
发帖数: 54 | 44 请问哪里能找到关于manual aseptic processing / compounding的SOP?
或者能否有人分享一下?
不知这个在pharmacy用的还多么 |
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y*****a
发帖数: 210 | 45 很想拿一个 CSP compounding specialist 的证书，网上没查到， 请问这个证书该怎
样才能申请那？ 是毕业前申请还是一定要拿到 药剂师的正书后才能申请？ 有了解详
情的姐妹给点信息， 多谢！ |
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y********o
发帖数: 104 | 46 这个怎么让我想起了New England Compounding Center...........开个玩笑啊，别当
真，呵呵。 |
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F*****y
发帖数: 92 | 47 个人觉得，既然选择了这一行，还是选retail 好，先干几年再说，很锻炼人的！如果
从一开始就去compounding setting 的话，局限性太大，一旦失去工作，再回到retail
难度比较大。仅供参考，个人意见而已！ |
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p********0
发帖数: 186 | 48 I assume it is continuous compounding since I have the rate
for 1 month, 4 months, 7 months etc.
Is this correct?
Also how do I interpolate the 3 months yield, just fit a spline to the whole
yield curve using excel and then read approximately? |
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