b**********e
发帖数: 531 | 1 Let me know if you are familar and willing to review the following paper,
thanks
Preparation and Characterization of Self Emulsified Docetaxel
Abstract
The main goal of this work was to prepare a self-microemulsifying docetaxel
(Dtx) using PLGA, Tetraglycol, Labrasol, and Cremophor ELP. The prepared Dtx
-loaded SMES showed the size of the range of 80–90 nm with narrow size
distribution and the negative zeta-potential values. Its morphology was a
spherical shape by atomic force microscopy. In exp |
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z*********4
发帖数: 146 | 3 I can not download the following one:
Free precipitation of spherical particles in anomalous-viscosity liquids
Journal Journal of Engineering Physics and Thermophysics
Publisher Springer New York
ISSN 1062-0125 (Print) 1573-871X (Online)
Issue Volume 28, Number 3 / March, 1975
DOI 10.1007/BF00862010
Pages 315-317
Subject Collection Engineering
SpringerLink Date Wednesday, December 29, 2004 |
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m********8
发帖数: 314 | 5 比较奇怪这个5.5 nm的数据也能成论文重点。
"Previously, we have shown that rigid spherical nanoparticles such as
quantum dots can be cleared by the kidneys if they have a hydrodynamic
diameter of approximately 5.5 nm and a zwitterionic surface charge2. Here,
we show that quantum dots functionalized with high-affinity small-molecule
ligands that target tumours can also be cleared by the kidneys if their
hydrodynamic diameter is less than this value, which sets an upper limit of
5–10 ligands per quantum dot for rena |
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a*********r
发帖数: 14 | 6 对不起，我还真是给武大化学系留了面子。
莫非你就是其中一件丑事的主角，干嘛一触即发，破口大骂呢？
袁荃做的是还不错，但不意味武大化学系就有多好了。
举例来说，即使袁荃和另外一位新招的楚天特聘教授傅磊相比，也能看出武大化学系在其中有没有猫腻了。
首先补充一点：袁荃的老公叫廖蕾，也是武大物理系新招的楚天特聘教授，可以作为很好的对照体系。
比比三人的publication和经历，就能明显看出水平之比是:
廖蕾>袁荃>傅磊
但从袁荃却没有评上楚天特聘。
廖蕾
http://physics.whu.edu.cn/node/557
1. Y. Z. Long, L. Liao*, X. F. Duan, Z. Y. Fan*, Large-scale Integration of Semiconductor Nanowires for High Performance Flexible Electronics ACS Nano (In press)
2. L. Liao, J. W. Bai, R. Chen, H. L. Zh... 阅读全帖 |
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a*********r
发帖数: 14 | 7 对不起，我还真是给武大化学系留了面子。
莫非你就是其中一件丑事的主角，干嘛一触即发，破口大骂呢？
袁荃做的是还不错，但不意味武大化学系就有多好了。
举例来说，即使袁荃和另外一位新招的楚天特聘教授傅磊相比，也能看出武大化学系在其中有没有猫腻了。
首先补充一点：袁荃的老公叫廖蕾，也是武大物理系新招的楚天特聘教授，可以作为很好的对照体系。
比比三人的publication和经历，就能明显看出水平之比是:
廖蕾>袁荃>傅磊
但从袁荃却没有评上楚天特聘。
廖蕾
http://physics.whu.edu.cn/node/557
1. Y. Z. Long, L. Liao*, X. F. Duan, Z. Y. Fan*, Large-scale Integration of Semiconductor Nanowires for High Performance Flexible Electronics ACS Nano (In press)
2. L. Liao, J. W. Bai, R. Chen, H. L. Zh... 阅读全帖 |
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S*****n
发帖数: 6055 | 8 how would you approach a catalyst deactivation problem
what was the sorbent you used for inverse GC
how would you deal with non-spherical particles
how much experience do you have with Aspen and Fluent
what is your novel contribution to the field
do you prefer to do experiments or simulations |
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y****e
发帖数: 2023 | 9 Pressure-Driven Assembly of Spherical Nanoparticles and Formation of 1D-Nano
structure Arrays
Angewandte Chemie International Edition
Volume 49, Issue 45, pages 8431–8434, November 2, 2010
Dr. Huimeng Wu1, Dr. Feng Bai2, Dr. Zaicheng Sun2, Raid E. Haddad2, Prof. Da
niel M. Boye3, Prof. Zhongwu Wang4, Prof. Hongyou Fan1,2
Article first published online: 29 OCT 2010
DOI: 10.1002/anie.201001581
http://onlinelibrary.wiley.com/doi/10.1002/anie.201001581/abstr |
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q****i
发帖数: 6923 | 10 Thermally Induced Transition between Open and Closed Spherical Pores in
Ordered Mesoporous Silicas
Michal Kruk and Chin Ming Hui
J. Am. Chem. Soc., 2008, 130 (5), pp 1528–1529 |
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q****i
发帖数: 6923 | 11 (35) Blas, H.; Save, M.; Pasetto, P.; Boissiere, C.; Sanchez, C.;
Charleux, B. Langmuir 2008, 24, 13132–13137.
(23) Hah, J. S.; Kim, B. J.; Jeon, S. M.; Koo, Y. E. Chem. Commun.
2003, 14, 1712–1713.
Particle Size Control of Colloidal Suspensions of Mesostructured Silica
Andreas Berggren and Anders E. C. Palmqvist
J. Phys. Chem. C, 2008, 112 (3), pp 732–737
Surfactant-Free Synthesis of Colloidal Poly(methyl methacrylate)/Silica
Nanocomposites in the Absence of Auxiliary Comonomers
M. J. Percy and... 阅读全帖 |
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k***n
发帖数: 383 | 14 我现在有个spherical shell.
bottem temperature =1.
top temperature =0.
我想分成N layers.
把底部4 layers 设置成linear,
tem[0]=1.0,
tem[1]=0.75,
tem[2]=0.5,
tem[3]=0.25.
其他的都是 uniform , = 0.
现在的问题是整个程序是 并行化的.
在初始的时候,如果在Z 方向上分给2个processors 的话.
这2个sub layer 居然都在底部出现那个小的linear 分布了.
有什么办法把上面那个去掉呢?
读别人的程序就是痛苦啊:( |
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o******r
发帖数: 259 | 15 【 以下文字转载自 Science 讨论区 】
【 原文由 observer 所发表 】
网上已经有matlab 和 c的混合编程，
我就来写个mathematica 和 C/C++的混合编程吧，只图方便
- observer
mathematica的数学运算在有些方面比 matlab 要全一些，symbolic computing就不
用说了，
比如我感兴趣的 non-square的矩阵求逆， mathematica可以直接做，
matlab还要自己调svd,剔除无效singular value，再算逆矩阵，
还有spherical harmonics，mathematica 可以直接求
当然matlab和mathematica 我两个都用，
我比较喜欢的是用mathematica和matlab完成那些公式函数太多的运算，
调函数的方式在matlab和mathematica下效率是优化过的，所以不慢
而剩下的“苦”活就由我用c/c++来写好了
以下基于mathematica 5.0 的 mathlink 和 VC6，
mathlink支持很多接口，包括tcp/ip, 也就是装math |
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B*B
发帖数: 87 | 16 帮忙下载paper
在springer 的Lecture Notes in Mathematics 系列，学校的图书馆只能下最新的，这
个老paper不知道这里有没有人能下到
H.Brehm
Description of spherically invariant random processes by means of g-
functions
Lecture Notes in Mathematics， 1982
PP.39-73
感谢万分!
email: g**************[email protected] |
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a*******r
发帖数: 7558 | 17 t-matrix?
I once was fascinated by those 'generalized spherical functions' and
bought quite a few classics such as Szego's ,
then realized those Russian people are too good at that, so now,
I just use it as black box, gave up for details... |
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r****y
发帖数: 1437 | 18 projection illusion.
remember the area is proprotional to cos(lat)
This is why from 30S to 30N, the area is half of the total spherical
area.
Afica has a big chunk in tropics, while North American is really
further polarward a lot. |
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w******r
发帖数: 43 | 20 These papers are non-equilibrium system, because they use PS as one of blocks.
PS has high Tg than rm T.
There are a lot work is about both the hydrophobic and hydrophilic have low
Tg,
so they can reach equilibrium.
Bates have a paper in JPS 2002 using cryo-TEM to characterize the micelle
morphology.
I know amphiphilic block copolymer can form spherical, cylinder, versicle,
flower and onion and networw or bicontinuous micelles. |
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C***S
发帖数: 175 | 21 Yes.
I am working on NMR and we find the model of Nafion is somewhat
not in detail enough. And we think the clusters in Nafion is somewhat
not in spherical. So, we want to find a computation method to calculate
the SAXS profile and compare with the experimental SAXS data.
Now what I am looking for is to generate some geometry model, say cylinders
ditributed in space, and computate the profile.
I do not want to generate the atomic level accuracy. |
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b*******n
发帖数: 29 | 22 I think the way polymer dispersing in water is very different
from the way water dispersing in polymer, e.g., water aggregates
then coalesces, which forms very good spherical structure. However,
Non-water soluble polymer in water tends to aggregates, but is hard to
coalesce, which forms a fractal structure.
This is only my GUESS.
negtive |
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c*s
发帖数: 2145 | 23 got it. the first block is acrylate species and the second block contains
sulphonate group. two samples with different hydrophilic-hydrophobic lengths
were prepared and they self-assembled in water to form micelles, with
either spherical or fiber morphology. |
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p**n
发帖数: 10 | 24 I desperately need help now.
anyone can lecture me on how to expand a function f(x), where x is a vector in
4-dimension space, as a sum of ultraspherical harmonic. I know how to do this
in 3-dimension, i.e. f(x) can be expanded as spherical harmonics Y_lm(\theta,
\phi). every text book has it. If we generalize it to higher dimension, such
as 4-d, it is my quesion. I dont want it to be very theoretical, but I want it
practical. And also, it should have othogonal properites as well...
bow |
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c**********g
发帖数: 222 | 25 请问spherical Bessel函数的傅立叶变换怎么作？
即 j(x,l)exp(ikx)在区间[x1,x2]的积分。我可以数值求积分，但是两个振荡函数乘积
的积分，我怕数值积分精度太差。
exp(ikx)可以用j(x,l1)做展开。至少当k=1，l1=l时，积分不为零。但我不知道别的(k
neq 1), l neq l1的贡献是多大。
预谢各位！ |
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B*B
发帖数: 87 | 26 帮忙下载paper
在springer 的Lecture Notes in Mathematics 系列，学校的图书馆只能下最新的，这
个老paper不知道这里有没有人能下到
H.Brehm
Description of spherically invariant random processes by means of g-
functions
Lecture Notes in Mathematics， 1982
PP.39-73
感谢万分!
email: g**************[email protected] |
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c*****t
发帖数: 520 | 27 考虑方程 Laplace u + f(u) = 0, u = u(x), x in R^N, N>=2 的ground states。
有没有比较新近和全面的关于existence and uniqueness的综述文章？
特别考虑以下情况：f(u)=g(u)u^k, k>1, g(u) changes sign on (0,infinity).
对于uniqueness of positive ground states有什么比较普遍的结果吗？
满足条件 spherically symmetric with respect to 0 and decaying as |x| goes
to infinity 的positive solution 若存在，是否肯定唯一？
请大家指教。非常感谢。 |
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i****g
发帖数: 3896 | 28 能不能不要只盯着这些无聊的生活细节啊？他的学生对他评价都很高，绝对是一位优秀
的老师：
This man taught me calculus. A wonderful gentleman and a phenomenal
instructor.
[+]Temorse 282 points283 points284 points 12 hours ago (11 children)
[–]Temorse 282 points283 points284 points 12 hours ago
I was also lucky enough to have him as my calc professor, twice. The first
thing he would tell us at the beginning of each term was, "My name is Yitang
Zhang, but in China, you would call me Zhang Yitang." Then he would erase
both names off the white ... 阅读全帖 |
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F****k
发帖数: 19925 | 29 帮朋友问，请问哪能找到详细的傅立叶方程转换成如下坐标的推导过程？能否推荐书籍
/文献？多谢
1.elliptical cylindrical coordinate
2.ellipsodal coordinate
3.spherical coordinate |
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w*******h
发帖数: 29 | 30 如何用comsol 模拟一个圆柱体 受一恒定torque后长度方向上的rotation angle? 是
在3D mechanic structure 的package 里选那个solid （也是唯一个选项）， 然后画
3D图？ 但load 怎么样输入呢？画3D时要用直角坐标还是spherical坐标？
谢谢 |
|
发帖数: 1 | 31 One PhD position with full financial support is immediately available in Dr.
Jing Fan’s research group of Complex Fluids and Soft Materials, in the
Department of Mechanical Engineering at the City College of New York (CCNY).
Based on cutting-edge microfluidics and visualization techniques, the group
conducts interdisciplinary experimental research on a wide variety of
topics, such as the transport phenomena in biological tissues, design and
fabrication of functional porous materials, enhanced oi... 阅读全帖 |
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j***e
发帖数: 287 | 32 最近刚做了视力检查，结果如下：
Rx | Spherical | Cylindrical | Axis | Add |
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a********s
发帖数: 575 | 33 医生检测结果如下
O.D. (网上查到这2个字母代表“右眼”
SPHERICAL： -2.50 （这个代表近视250度）
CYLINDRICAL: +0.75 （这个不明白？散光？为何有一个+号？）
AXIS: 091 （散光的轴度是091？）
想让假期回国的同学，从国内再多配个眼镜，可看不明白检测结果，请您给帮一下啊，
多谢了 |
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m******i
发帖数: 834 | 34 Tweaking a standard chemical method to make nanotubes has provided
researchers with a structure that looks just like a miniature sea urchin.
These structures, composed of vanadium oxide, roll up during the reaction to
form hollow tubes. By varying the reaction researchers were able to ‘grow
’ these tubes into spherical/radial structures which resemble the common
sea urchin ("Atomic Layer Structure of Vanadium Oxide Nanotubes Grown on
Nanourchin Structures"). [点击图片可在新窗口打开]
Nano-urchin and real se |
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C********5
发帖数: 194 | 35 Thanks you two!
Spherical. And in the future maybe other shapes. |
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d***a
发帖数: 128 | 36 1. SiO2 pattern as mask ok, even with large SiO2 sphere as mask, at 90C, PS
sphere will be soft, >100C, deform spherical shape
2, try to use tobulene, maybe working, |
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h********g
发帖数: 5 | 37 Ming Liu and Fuqian Yang, Finite element simulation of the effect of
electric boundary conditions on the spherical indentation of transversely
isotropic piezoelectric films, Smart Materials and Structures 21 (2012)
105020 (10pp)
Finite element simulation was used to analyze the effect of electric
boundary conditions on the
indentation deformation of a transversely isotropic piezoelectric film
with the contact radius
much larger than the film thickness. Six different combinations of... 阅读全帖 |
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t*d
发帖数: 1290 | 38 【 以下文字转载自 Biology 讨论区 】
发信人: ttd (oldcat), 信区: Biology
标 题: better way to conquer cancer
发信站: BBS 未名空间站 (Wed Jan 16 14:57:14 2013, 美东)
IMHO, to find novel drug delivering methods might be better ways to conquer
cancer comparing to studying the mechanisms of cancer initiation and
progression.
Nature 491, S58–S60 (22 November 2012)
Nanotechnology: Carrying drugs
When Joseph DeSimone makes nanomedicines, he compares himself to a baker. He
mixes drugs with different chemical 'batters', ... 阅读全帖 |
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a********s
发帖数: 575 | 39 医生检测结果如下
O.D. (网上查到这2个字母代表“右眼”
SPHERICAL： -2.50 （这个代表近视250度）
CYLINDRICAL: +0.75 （这个不明白？散光？为何有一个+号？）
AXIS: 091 （散光的轴度是091？）
想自已让同学从国内配眼镜，可看不明白检测结果，请您给帮一下啊，多谢了 |
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s*****n
发帖数: 209 | 40 When people say that recent observational evidence suggests that
the universe is flat, they mean that the spatial section of
the universe is flat. The metric for the cosmological model is
ds^2 = -dt^2 + a(t)^2 ds_3^2
where ds_3^2 = dx_1^2 + dx_2^2 + dx_3^2 instead of spherical or
hyperbolic metrics. The four-dimensional spacetime is not flat,
since the only flat spacetime in D=4 with Lorentian signature is
Minkowskian.
The age of the universe can be measured regardless whether |
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o****e
发帖数: 92 | 41 this reminds me of the 'spherical cow' joke... |
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c******a
发帖数: 159 | 42 Does an atomic level with larger quantum numbers always have larger average
radius? assuming no degeneracy。（注：之所以说是average是因为radius非
spherical）比方说，(n,l,m)态的半径一定大于(n,l,m+1)态吗？ |
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c****e
发帖数: 2097 | 43 in other words, the cow eats the mushroom and says Mooo...
this has the following physical consequence: GR has solutions which violate
Mach's 'principle', but such solutions tend to have pathologies.
in human language, there are mushrooms which are square instead of round,
but these are poisonous for the spherical cow. |
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Q*T
发帖数: 263 | 44 这个无非就是把H展成spherical tensor，然后算矩阵元 |
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s*******n
发帖数: 1474 | 45 Zwicky是天文领域一个独一无二的牛人, 以敏锐的洞察力和刻薄的人品著称
他把他在Palomar天文台的同事叫做“spherical bastard”
why? because“they are bastard in any way you look”
不过他对于现代天文学的贡献基本也只有Hubble等寥寥几人能相抗了。
Chicago
of
speakers
Marc |
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x***u
发帖数: 6421 | 46 Improved measurement of the shape of the electron
J. J. Hudson, D. M. Kara, I. J. Smallman, B. E. Sauer, M. R.
Tarbutt & E. A. Hinds
AffiliationsContributionsCorresponding author
Nature 473, 493–496 (26 May 2011) doi:10.1038/nature10104
Received 18 February 2011 Accepted 08 April 2011 Published online 25 May
2011
The electron is predicted to be slightly aspheric1, with a distortion
characterized by the electric dipole
moment (EDM), de. No experiment has ever detected this dev... 阅读全帖 |
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j****c
发帖数: 19908 | 47 Nature最新文章：
http://www.nature.com/nature/journal/v473/n7348/full/nature1010
Improved measurement of the shape of the electron
Nature Volume: 473,Pages: 493–496 Date published: (26 May 2011) DOI
The electron is predicted to be slightly aspheric1, with a distortion
characterized by the electric dipole moment (EDM), de. No experiment has
ever detected this deviation. The standard model of particle physics
predicts that de is far too small to detect2, being some eleven orders of
magnitude sm... 阅读全帖 |
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g*********n
发帖数: 808 | 48 锂电池特辑1:迈向超级电池[物理]
锂离子电池，也许是下一代能源和交通问题解决的方法
1801年，伏打把他的“电堆”装置公开给拿破仑，他不可能想到两个世纪之后，他的发
明可能成为人类生活的中心。由被盐水浸泡的锌和银电极的原始电池使得小型电化学能
源-锂电池成为了现代消费电子市场的中心。
在《瓶瓶装闪电》中，科学记者森斯-费莱彻解释了锂电池的工作原理，并且对致使锂
电池盛行的研究节奏进行了描述。每年数十亿的元件生产和数十亿的美元利润，可见移
动电子市场正在繁荣。在绿色能源中，锂电池也受到了新的挑战。费莱彻描述到发展下
一代锂电池的激烈竞争，但是可能更多的人选择现有的技术。
日益减少的石油资源以及备受关注的气候变化迫使我们使用更多的替代能源，比如太阳
能、风能，也不得不用混合动力车、油电混合车以及最终的全电动汽车来替代污染的内
燃汽车。由于我们的太阳不能按照我们的要求发光，风不能按照我们的意愿吹来，这些
可再生能源的成功应用依赖于我们高效的储电能力。电化学电池，特别是锂电池，成为
了最佳选择，因为它们把化学能转变为电能效率很高并且无有毒物质释放。
玻利维亚和南美国家巨大储量的碳酸锂盐可使汽... 阅读全帖 |
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d******l
发帖数: 43 | 49 On the Neumann function and the method of images in spherical and
ellipsoidal geometry
Source: MATHEMATICAL METHODS IN THE APPLIED SCIENCES Volume: 35 Issue: 4
Pages: 482-496 DOI: 10.1002/mma.1595 Published: MAR 15 2012
Please send to dukebaal at yahoo.com
包子酬谢。 |
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m********e
发帖数: 1156 | 50 我还算有知的，无论深度还是广度，奈何世界上的知识太多。
有人贴出老爱的几百篇论文，我一看大多数是德文，不知道，无法判断。
您瞅一眼，看看有多少是真正的科研论文？
1913 Einige Argumente für die Annahme einer molekular Agitation beim
absoluten Nullpunkt Annalen der Physik(ser. 4), 40, 551–560, link
Some Arguments for the Assumption of Molecular Agitation at Absolute
Zero
1913 Déduction thermodynamique de la loi de l'équivalence
photochimique Journal de physique (ser. 5), 3, 277–282
Thermodynamic Deduction of the Law of Photoche... 阅读全帖 |
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