求助: permeability 的 测试问题# Chemistry - 化学
d*m
1 楼
国内有个亲人想要来这边玩，但是他每周需要打一针药，想问问能否把药带过来，另外
如果在这边打针的话都需要什么手续呢？
谢谢！
如果在这边打针的话都需要什么手续呢？
谢谢！
r*r
2 楼
FSA dependent care里面存了5000，但是一年的daycare花费要9000多，是不是出了那
个FSA 5000税前的，剩下的9000-5000=4000还可以继续抵税就是regular的那个一个小
孩最多3000 （最多2个小孩6000）的那个？
多谢了！
个FSA 5000税前的，剩下的9000-5000=4000还可以继续抵税就是regular的那个一个小
孩最多3000 （最多2个小孩6000）的那个？
多谢了！
h*y
3 楼
请问DS160表在线填完submit之后还要打印出来带着吗？
另外，除了这个表，是不是不用填其他表了？
谢谢！
另外，除了这个表，是不是不用填其他表了？
谢谢！
s*n
4 楼
在NIW和EB-1a同时还是分开办上纠结。
EB-1a现在办还差一些，paper够了想攒一些review再去参加个会。
NIW如果现在办了过一年再申请Eb1-a要重新求推荐信吗？
用一年以前的推荐信会不会不可以？因为要两次推荐信有些老板可能不高兴。
请有经验的前辈们指点。
谢谢啦！
EB-1a现在办还差一些，paper够了想攒一些review再去参加个会。
NIW如果现在办了过一年再申请Eb1-a要重新求推荐信吗？
用一年以前的推荐信会不会不可以？因为要两次推荐信有些老板可能不高兴。
请有经验的前辈们指点。
谢谢啦！
f*g
5 楼
Sorry for my writing in English 'cuz I'm on my office computer. All right,
here's the story. I droped this bady the other morning and it hit the strap
button of another guitar. The back of neck was dented quite heavily.
OOOuuuch, It hurts. I sorted out the facts that 1) The finish is polyster,
which means it won't be melt by solvent and be perfectly repaired 2) The
finish didn't go off. So I didn't wanna go for the "nail polish" approach.
Thinking it over, I came up with an idea. I then checked it up on the
Internet and found people had used it before. I unfortunately lost the title
of the inventer, lol. Anyway, at least I knew it should work. Here we go.
I placed a folded piece of damped paper towel on the 'wound' and used a
solder iron to 'massage' the area. Just slightly press the iron tip on the
towel and enjoy the steaming zzzzzzz sound. The heat and moisture would help
to restore the wood to its original form.
I did this for several minutes until the wood wouldn't come out any further.
The dent was not so deep at that time but it was still there. And you can
see the finish cracks like a broken piece of glass.
All right, here's the thing I use to fix it: CA glue.
I bought this one for my ongoing project. They carry the same material at
the homedepot marketed as 'super glue'. But those are of much higher density
and not suitable for this purpose. You need to buy the 'water / ultra thin'
one from a hobby shop.
I droped some CA glue on to the dented area. You can see the crack
disappeared. There was just some excessive glue on the surfce. I then wet
sanded down the area with some 400, 600, 800 grid sand papers. I droped some
glue and sanded again until the surface was leveled.
Here is the final result.
you wont see the dent any more if you don't look carefully at a certain
angle. That is it. Plus, a dent fix costs around $100 to $300 at a luthier.
here's the story. I droped this bady the other morning and it hit the strap
button of another guitar. The back of neck was dented quite heavily.
OOOuuuch, It hurts. I sorted out the facts that 1) The finish is polyster,
which means it won't be melt by solvent and be perfectly repaired 2) The
finish didn't go off. So I didn't wanna go for the "nail polish" approach.
Thinking it over, I came up with an idea. I then checked it up on the
Internet and found people had used it before. I unfortunately lost the title
of the inventer, lol. Anyway, at least I knew it should work. Here we go.
I placed a folded piece of damped paper towel on the 'wound' and used a
solder iron to 'massage' the area. Just slightly press the iron tip on the
towel and enjoy the steaming zzzzzzz sound. The heat and moisture would help
to restore the wood to its original form.
I did this for several minutes until the wood wouldn't come out any further.
The dent was not so deep at that time but it was still there. And you can
see the finish cracks like a broken piece of glass.
All right, here's the thing I use to fix it: CA glue.
I bought this one for my ongoing project. They carry the same material at
the homedepot marketed as 'super glue'. But those are of much higher density
and not suitable for this purpose. You need to buy the 'water / ultra thin'
one from a hobby shop.
I droped some CA glue on to the dented area. You can see the crack
disappeared. There was just some excessive glue on the surfce. I then wet
sanded down the area with some 400, 600, 800 grid sand papers. I droped some
glue and sanded again until the surface was leveled.
Here is the final result.
you wont see the dent any more if you don't look carefully at a certain
angle. That is it. Plus, a dent fix costs around $100 to $300 at a luthier.
e*r
6 楼
说起来都是泪，小学时候有个老师，脾气不好，谁上课喜欢说话，就喜欢骂谁，有时候
还喜欢用粉笔扔你，有次有个人说话厉害，就直接用粉笔刷扔，结果用力过猛，还准头
不行，把另外一个旁边的无辜的同学给砸的额头流血。
后来五年级时，有个数学老师更变态，喜欢拧你的耳朵，你成绩不好，拧你耳朵，上课
说话拧你耳朵，他妈的，他心情不好，还是拧同学耳朵。拧起耳朵会用力扭曲，你的耳
朵变成麻花，他再用力往上拉，你只能踮起脚尖，那叫一个痛呀。几乎每次他还没拧同
学，同学都会哭的。
有次拧一个同学的耳朵，这个同学很倔强，无论老师怎么用力，都是不出声求饶，也不
哭，老师觉得自己的尊严受到挑战了，越发用力，骂道，你还不哭，我看你苦不苦。最
后用力过度，把那个同学的耳朵拧开了，撕了一个很长的口子。那同学才哇哇大哭起来
。老师觉得很满意，放下手，说，你现在终于哭了把。
对那个老师印象很差很差，因此对其他老师也没什么好印象。我估计在这个老师手里读
过书的，都会有严重的心理阴影，我也被他体罚过，那拧起的耳朵，真是痛的要命，所
以也佩服那个同学忍了那么久没有哭。
还喜欢用粉笔扔你，有次有个人说话厉害，就直接用粉笔刷扔，结果用力过猛，还准头
不行，把另外一个旁边的无辜的同学给砸的额头流血。
后来五年级时，有个数学老师更变态，喜欢拧你的耳朵，你成绩不好，拧你耳朵，上课
说话拧你耳朵，他妈的，他心情不好，还是拧同学耳朵。拧起耳朵会用力扭曲，你的耳
朵变成麻花，他再用力往上拉，你只能踮起脚尖，那叫一个痛呀。几乎每次他还没拧同
学，同学都会哭的。
有次拧一个同学的耳朵，这个同学很倔强，无论老师怎么用力，都是不出声求饶，也不
哭，老师觉得自己的尊严受到挑战了，越发用力，骂道，你还不哭，我看你苦不苦。最
后用力过度，把那个同学的耳朵拧开了，撕了一个很长的口子。那同学才哇哇大哭起来
。老师觉得很满意，放下手，说，你现在终于哭了把。
对那个老师印象很差很差，因此对其他老师也没什么好印象。我估计在这个老师手里读
过书的，都会有严重的心理阴影，我也被他体罚过，那拧起的耳朵，真是痛的要命，所
以也佩服那个同学忍了那么久没有哭。
d*7
7 楼
不知道发在这里合适不合适，但是还是希望有牛人来解答一下，我没有这方面的背景。
问题： 要测一种材料对液体的 permeability， 但是这种材料不是弹性的，而且很薄
，crosslink
之后比较脆，如何能够用试验方法测呢？ diffusion cell 好像对那些有弹性的薄膜有
用，但是我这
个一加紧会破坏材料本身.
还有一个问题是，这个材料本身是粘合剂 adhesion promoter, 很难把这层从基片上取
下来
有没有人做过类似材料的测试？望不吝赐教， 谢谢
问题： 要测一种材料对液体的 permeability， 但是这种材料不是弹性的，而且很薄
，crosslink
之后比较脆，如何能够用试验方法测呢？ diffusion cell 好像对那些有弹性的薄膜有
用，但是我这
个一加紧会破坏材料本身.
还有一个问题是，这个材料本身是粘合剂 adhesion promoter, 很难把这层从基片上取
下来
有没有人做过类似材料的测试？望不吝赐教， 谢谢
d*m
8 楼
挽尊
d*n
9 楼
如果你有2个孩子，还可以用1000
t*s
10 楼
交表的时候只交160确认页。
不过带上应急还是好的（比如突然发现错误需要重填，或者条码打印的不清楚）。
不过带上应急还是好的（比如突然发现错误需要重填，或者条码打印的不清楚）。
s*u
11 楼
要重新求推荐信。
你现在可以要求老板同时签2分推荐信
你现在可以要求老板同时签2分推荐信
x*n
12 楼
电烙铁这一招我也试过，挺管用的，但上面的漆太厚的话效果不明显。有人会把漆先除
了再上烙铁。
改天我也去买 ultra thin glue 把我好几把琴上的clean coat dent 修一下。
这是把什么琴？Polyester paint on a mahogany neck? A Taylor?
好想冲到你家里看琴,可惜这段时间太忙，过一小会儿吧 ：）
strap
title
【在 f****g 的大作中提到】
: Sorry for my writing in English 'cuz I'm on my office computer. All right,
: here's the story. I droped this bady the other morning and it hit the strap
: button of another guitar. The back of neck was dented quite heavily.
: OOOuuuch, It hurts. I sorted out the facts that 1) The finish is polyster,
: which means it won't be melt by solvent and be perfectly repaired 2) The
: finish didn't go off. So I didn't wanna go for the "nail polish" approach.
: Thinking it over, I came up with an idea. I then checked it up on the
: Internet and found people had used it before. I unfortunately lost the title
: of the inventer, lol. Anyway, at least I knew it should work. Here we go.
: I placed a folded piece of damped paper towel on the 'wound' and used a
了再上烙铁。
改天我也去买 ultra thin glue 把我好几把琴上的clean coat dent 修一下。
这是把什么琴？Polyester paint on a mahogany neck? A Taylor?
好想冲到你家里看琴,可惜这段时间太忙，过一小会儿吧 ：）
strap
title
【在 f****g 的大作中提到】
: Sorry for my writing in English 'cuz I'm on my office computer. All right,
: here's the story. I droped this bady the other morning and it hit the strap
: button of another guitar. The back of neck was dented quite heavily.
: OOOuuuch, It hurts. I sorted out the facts that 1) The finish is polyster,
: which means it won't be melt by solvent and be perfectly repaired 2) The
: finish didn't go off. So I didn't wanna go for the "nail polish" approach.
: Thinking it over, I came up with an idea. I then checked it up on the
: Internet and found people had used it before. I unfortunately lost the title
: of the inventer, lol. Anyway, at least I knew it should work. Here we go.
: I placed a folded piece of damped paper towel on the 'wound' and used a
t*a
13 楼
$3000x2 - $5000.
和总花费关系不大(as long as > $6000)
【在 d*******n 的大作中提到】
: 如果你有2个孩子，还可以用1000
和总花费关系不大(as long as > $6000)
【在 d*******n 的大作中提到】
: 如果你有2个孩子，还可以用1000
f*g
14 楼
r u back from China yet?
Right, it won't come out totally neither in my case. But the glue helps fill
the gap.
The iron works like a charm on bare wood when building a new guitar.
It's a Larrivee acoustic.
【在 x****n 的大作中提到】
: 电烙铁这一招我也试过，挺管用的，但上面的漆太厚的话效果不明显。有人会把漆先除
: 了再上烙铁。
: 改天我也去买 ultra thin glue 把我好几把琴上的clean coat dent 修一下。
: 这是把什么琴？Polyester paint on a mahogany neck? A Taylor?
: 好想冲到你家里看琴,可惜这段时间太忙，过一小会儿吧 ：）
:
: strap
: title
Right, it won't come out totally neither in my case. But the glue helps fill
the gap.
The iron works like a charm on bare wood when building a new guitar.
It's a Larrivee acoustic.
【在 x****n 的大作中提到】
: 电烙铁这一招我也试过，挺管用的，但上面的漆太厚的话效果不明显。有人会把漆先除
: 了再上烙铁。
: 改天我也去买 ultra thin glue 把我好几把琴上的clean coat dent 修一下。
: 这是把什么琴？Polyester paint on a mahogany neck? A Taylor?
: 好想冲到你家里看琴,可惜这段时间太忙，过一小会儿吧 ：）
:
: strap
: title
r*r
15 楼
多谢多谢！还是有点不明白，不好意思
我就只有一个小孩。难道说FSA里面存5000也最多只能用3000吗？还是可以用完这个
5000的。
另外，除了这个FSA里面的钱，我还可以用多少？就是说，最多6000了，可以一部分从
FSA出（5000），剩下的只有1000了？
我就只有一个小孩。难道说FSA里面存5000也最多只能用3000吗？还是可以用完这个
5000的。
另外，除了这个FSA里面的钱，我还可以用多少？就是说，最多6000了，可以一部分从
FSA出（5000），剩下的只有1000了？
x*n
16 楼
上星期回的。
我在国内恰好也弹了一把朋友的 Larrivee acoustic，感觉很不错，性价比高。
fill
【在 f****g 的大作中提到】
: r u back from China yet?
: Right, it won't come out totally neither in my case. But the glue helps fill
: the gap.
: The iron works like a charm on bare wood when building a new guitar.
: It's a Larrivee acoustic.
我在国内恰好也弹了一把朋友的 Larrivee acoustic，感觉很不错，性价比高。
fill
【在 f****g 的大作中提到】
: r u back from China yet?
: Right, it won't come out totally neither in my case. But the glue helps fill
: the gap.
: The iron works like a charm on bare wood when building a new guitar.
: It's a Larrivee acoustic.
d*n
17 楼
只有一个孩子，FSA里面的5000可以用完，然后就没的用了
f*g
18 楼
cool. welcome back :>
【在 x****n 的大作中提到】
: 上星期回的。
: 我在国内恰好也弹了一把朋友的 Larrivee acoustic，感觉很不错，性价比高。
:
: fill
【在 x****n 的大作中提到】
: 上星期回的。
: 我在国内恰好也弹了一把朋友的 Larrivee acoustic，感觉很不错，性价比高。
:
: fill
j*j
19 楼
两个孩子，一个上学一个不上 有6000 还是3000 呢
【在 d*******n 的大作中提到】
: 只有一个孩子，FSA里面的5000可以用完，然后就没的用了
【在 d*******n 的大作中提到】
: 只有一个孩子，FSA里面的5000可以用完，然后就没的用了
y*x
20 楼
我长见识了
s*n
21 楼
13岁以下都可以。不过学校教育费用不算。
【在 j******j 的大作中提到】
: 两个孩子，一个上学一个不上 有6000 还是3000 呢
【在 j******j 的大作中提到】
: 两个孩子，一个上学一个不上 有6000 还是3000 呢
j*t
22 楼
这么牛的帖子一定要顶一下
被我在从国内回来的路上错过了
strap
title
【在 f****g 的大作中提到】
: Sorry for my writing in English 'cuz I'm on my office computer. All right,
: here's the story. I droped this bady the other morning and it hit the strap
: button of another guitar. The back of neck was dented quite heavily.
: OOOuuuch, It hurts. I sorted out the facts that 1) The finish is polyster,
: which means it won't be melt by solvent and be perfectly repaired 2) The
: finish didn't go off. So I didn't wanna go for the "nail polish" approach.
: Thinking it over, I came up with an idea. I then checked it up on the
: Internet and found people had used it before. I unfortunately lost the title
: of the inventer, lol. Anyway, at least I knew it should work. Here we go.
: I placed a folded piece of damped paper towel on the 'wound' and used a
被我在从国内回来的路上错过了
strap
title
【在 f****g 的大作中提到】
: Sorry for my writing in English 'cuz I'm on my office computer. All right,
: here's the story. I droped this bady the other morning and it hit the strap
: button of another guitar. The back of neck was dented quite heavily.
: OOOuuuch, It hurts. I sorted out the facts that 1) The finish is polyster,
: which means it won't be melt by solvent and be perfectly repaired 2) The
: finish didn't go off. So I didn't wanna go for the "nail polish" approach.
: Thinking it over, I came up with an idea. I then checked it up on the
: Internet and found people had used it before. I unfortunately lost the title
: of the inventer, lol. Anyway, at least I knew it should work. Here we go.
: I placed a folded piece of damped paper towel on the 'wound' and used a
d*y
23 楼
fsa和child care credit两个只能拿一个。
m*u
24 楼
不太明白，问题同LZ一样，如果FSA没有cover的那部分钱，还能否用来claim那个child
care credit？
【在 d******y 的大作中提到】
: fsa和child care credit两个只能拿一个。
care credit？
【在 d******y 的大作中提到】
: fsa和child care credit两个只能拿一个。
d*y
25 楼
child
自己google一下就知道了，有了fsa就不能claim child care credit了。
【在 m*******u 的大作中提到】
: 不太明白，问题同LZ一样，如果FSA没有cover的那部分钱，还能否用来claim那个child
: care credit？
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