h****z
发帖数: 1996 | 1 5 baozi each, thanks
email: h***********[email protected]
1.
Mechanical properties of polymer mixtures: Effect of compatibility
DOI:10.1080/00222348008212826
Albert F. Yeea & Mary A. Maxwella
http://www.tandfonline.com/doi/abs/10.1080/00222348008212826
2.
Microdomain structure and some related properties of block copolymers. II.
Plastic deformation mechanisms of the glassy component in rubber-toughened
plastics
DOI:10.1080/00222348008212822
Hiromichi Kawaia, Takeji Hashimotoa, Katsunori Miyoshiab, Hir... 阅读全帖 |
|
q****e
发帖数: 3660 | 2 Shilpa N. Beesabathuni, Seth E. Lindberg, Marco Caggioni, Chris Wesner, Amy
Q. Shen.
Getting in shape: Molten wax drop deformation and solidification at an
immiscible liquid interface.
Journal of Colloid and Interface Science, 2015; 445: 231 DOI: 10.1016/j.jcis
.2014.12.089
包子答谢。谢谢！ |
|
C*******M
发帖数: 153 | 3 四个多月前一天早晨醒来，腰椎部位突然胀痛。先以为扭伤了，帖了一个月膏药不见好
转，凌晨老是痛醒。接着看了一个月Chiroprator依然不见好转。Chiroprator让我去看
Physical Therapy。Physical Therapist让我做了一些稳定腰椎和锻炼腰肌的练习还是
不见好转。后来做了MRI。MRI报告说：
1. Mild degeneration at the L4-5 level includes a small disc bulge and mild
bilateral ligamentum flavum hypertrophy. No lumbar disk herniation is
evident.
2. Very mild T12 and L2 level vertebral body compression deformities of the
chronic and benign and/or of doubtful clinical significance. No acute
fracture evident.
3. Very mild de |
|
n**********b
发帖数: 114 | 4 first, I would assume the angle is parallel to the column web and connected
to the shear tab with two bolts perpenticular to the web plan.
Another thing is the rotation can occur even in the welded beam-column
connection. That rotation may be an elastic deformation in the beam section.
I think the rotation you mentioned is like a pin rotation. Since the pin-
connection in your model can only provide very samll moment resistant, we
consider it as pin-connection for design purpose.
However, if you |
|
a*******l
发帖数: 2353 | 5 My original question was how rotation was achieved on bolted bearing type
bolts.
Looks like the rotation was achieved with oversized hole for the bolts.
Elastic deformation will contribute if the hole size is too small.
Thanks man.
connected
section.
capacity |
|
w******g
发帖数: 17 | 6 请参考文章：
Modeling the effect of water, excavation sequence and rock reinforcement
with discontinuous deformation analysis
Auteur(s) / Author(s)
KIM Y.-I. (1 2) ; AMADEI B. (2) ; PAN E. (2) ;
目前DDA能算2维问题，3维的还是有些困难。 |
|
A****0
发帖数: 72 | 7 Ask the owner if the garage wall is made of wood frame with brick veneer.
If it is, then (1), otherwise (2):
(1) You need to check the wood frame, dry walls and the roof inside the
garage. If there is no cracks or excessive deformations, then the cracks
you observed are a minor problem. You can take out the bricks and get them
replaced later as necessary. For this type of structure, wood frame is the
load bearing member; the bricks are not.
Most houses in the midwest are this type of structu |
|
a******u
发帖数: 5 | 8 请大侠帮忙找如下一篇文章：
LOGANATHAN N, POULOS H G, STEWART D P. Centrifuge model testing of tunneling
-induced ground and pile deformations[J]. Géotechnique, 2000,50(3):283–294.
因学校里没买这个期刊，下不来，有哪位大侠能下到的给我发一个好吗？mulinlong@
hotmail.com
万分感谢！ |
|
w***o
发帖数: 1411 | 9 选一个不同W BEAM，STIFFNESS 就不同了。
不过我好像知道怎么回事了，STAAD自动加入了SHEAR DEFORMATION，这是为什么结果跟
用梁理论算出来的不一样。 |
|
j****6
发帖数: 207 | 10 papers help!
先谢谢.好些会议文献，比较难找，不管怎么样，先谢谢大家先！
Email： z***********[email protected]
1.Wardenier, J., 2007: A uniform effective width approach for the design
of CHS overlap joints.
Proceedings 5th International Conference on Advances in Steel
Structures, Singapore, Vol. II, pp.
155-165.
2.Qian, X.D., Wardenier, J., and Choo, Y.S., 2007: A uniform approach
for the design of CHS 100% overlap joints.
Proceedings 5th International Conference on Advances in Steel
Structures,
Singapore, Vol. II, pp. 172-182.
3.L... 阅读全帖 |
|
z******i
发帖数: 5114 | 11 Longitudinal slip and vertical debonding effects in the interface of steel-
concrete composite beam
Theoretical Calculation for the slip and deformation of rolled-shape steel
girder subjected to uniform loads |
|
s***n
发帖数: 821 | 12 There is no most difficult computational problem ba.
You ever tried to solve a multi-phase large deformation
dynamic analysis? |
|
bd
发帖数: 21 | 13 According to nonlinear:
There are three kinds of nonlinear problems.
The first one is nonlinear elasticity.Thats to say, the material is
nonlinear.The most famous solution is the deformation of a rubber under
lateral pressure. I once found this solution in a chinese book.
The second one is geometric nonlinear. The most famous solution in
elasticity is the deflection of a thin plate.( Qian weichang did much work in
this field)
The third one is contact nonlinear. The most famous solution |
|
s*****l
发帖数: 167 | 14
Is this a dynamic problem(time dependent)? So initially there is no
deformation, but there is a pressure(ext stress) difference between
the two ends? what is the solution like? piecewise constant? |
|
s*****l
发帖数: 167 | 15 hyperelasticity.
stress = \frac {\partial free energy} {\partial deformation} |
|
s*****o
发帖数: 48 | 16 Aims and Scope: Exploring and using anatomical shape properties plays an
increasingly important role in many medical imaging and image processing
applications. For examples, in medical image segmentation, prior knowledge
on the shape of interest has been used to achieve more accurate segmentation
, e.g. in case of ambiguities owing to limited image quality. In
neuroscience, the shape of certain brain structures, such as hippocampus,has
been shown to be useful for predicting the development of a ... 阅读全帖 |
|
s***l
发帖数: 2236 | 17 The original question is about the spacial mode of a laser, not how the
shape deforms in fiber or any media when the light propagates, not to
mention frequency domain, which is almost completely irrelavant.
For a confocal resonator, the spacial mode can be analytically solved to
be Hermite-Gauss functions, in which the TEM00 mode corresponds to a simple
2D Gaussian beam.
So for edge-emitting LD, the spacial mode should be 2D Gaussian beam, although
not degenerated since the ratio of the dimentio |
|
m*****t
发帖数: 3477 | 18 【 以下文字转载自 JobHunting 讨论区 】
发信人: dxupa (VA+fisherman), 信区: JobHunting
标 题: Intel AZ position opening
发信站: BBS 未名空间站 (Wed Oct 27 02:01:36 2010, 美东)
Please reply to mailbox for further inquiry/Referral.
Please Note job opening is for PHD RCG (18 month prior or post graduation
date) only. Candidates with chem, polymer, materials science background are
encouraged
to apply.
Description
Job Description: Packaging Engineers provide package development and
sustaining support for integrated circuit or se... 阅读全帖 |
|
s*****o
发帖数: 48 | 19 CFP: CVIU Special Issue on Shape Modeling in Medical Image Analysis
Aims and Scope: Exploring and using anatomical shape properties plays an
increasingly important role in many medical imaging and image processing
applications. For examples, in medical image segmentation, prior knowledge
on the shape of interest has been used to achieve more accurate segmentation
, e.g. in case of ambiguities owing to limited image quality. In
neuroscience, the shape of certain brain structures, such as hippoca... 阅读全帖 |
|
K**********n
发帖数: 1197 | 20 学术界珍稀有限的原版外文资料，
Remote Mind Control Technology
Reprinted from SECRET AND SUPPRESSED: BANNED IDEAS AND HIDDEN
HISTORY, edited by Jim Keith, $12.95, available from
1-800-680-INET.
There had been an ongoing controversy over health effects of electromagnetic
fields (EMF) for years (e.g., extremely low frequency radiation and the
Navy's Project Seafarer; emissions of high power lines and video display
terminals; radar and other military and industrial sources of radio
frequencies and micr... 阅读全帖 |
|
i********y
发帖数: 2263 | 21 The correspondence and branching problem in medical contour reconstruction
J He - Systems, Man and Cybernetics, 2008. SMC 2008. IEEE …, 2008 -
ieeexplore.ieee.org
Applications of deformable models for in-dopth analysis and feature extracti
on from medical images—A review
A Srinivasan, S Sundaram - Pattern recognition and image analysis, 2013 - Sp
ringer
如果能下到这篇就更感谢了
Contour Reconstruction Based on Non-Closed Contours
B Wang, JG He - Applied Mechanics and Materials, 2012 - Trans Tech Publ
Please ... 阅读全帖 |
|
t******d
发帖数: 376 | 22 No idea. is it your research topic? Large deformation problems are hard to
see.
Please |
|
w******d
发帖数: 279 | 23 A professor in Mechanical Engineering of WSU is seeeking a PhD student for
his research group.
The candidate should have a Master degree with any backgrounds in
metallurgy, polymer science, mechanical engineering, mechanics (theoretical
and experimental), solid physics, microstructure and deformation,
thermomechanical processing.
The candidates can be from departments of ME, ChE/MSE, ECE etc,ideally in
US right now.
Anybody interested can send the resume TO d****[email protected] |
|
s*****o
发帖数: 48 | 24 CFP: CVIU Special Issue on Shape Modeling in Medical Image Analysis
Aims and Scope: Exploring and using anatomical shape properties plays an
increasingly important role in many medical imaging and image processing
applications. For examples, in medical image segmentation, prior knowledge
on the shape of interest has been used to achieve more accurate segmentation
, e.g. in case of ambiguities owing to limited image quality. In
neuroscience, the shape of certain brain structures, such as hippoca... 阅读全帖 |
|
v*********1
发帖数: 4 | 25 The USA NSF funded Engineering Research Center for Revolutionizing Metallic
Biomaterials (ERC-RMB) had organized a big team ( from 3 universities in USA
) to study the Mg-based biodegradable alloys since 6 years ago. The research
covers alloy design, processing, plastic deformation, materials and
biological characterizations, surface modifications, implant prototyping,
cell toxicity and animal studies and so on. More information about the
center can be found at http://erc.ncat.edu.
Now there is ... 阅读全帖 |
|
发帖数: 1 | 26 正在努力攒review，真诚希望能够在本版找到review的机会。
我的专业是材料科学，主要研究领域的关键词包括electron microscopy，
microstructure，dislocation，surface structure，radiation damage，
nanocrystalline，nanomaterials，mechanical properties，plastic deformation，
stress corrosion，metals，alloys，nuclear materials等。
如果哪位前辈有文章要审，请不吝推荐。我的邮箱是[email protected]/* */。万分感谢！ |
|
A*5
发帖数: 59 | 27 The Department of Earth and Oceanographic Science invites applications for a
tenure-track position at the assistant professor rank. Ph.D. is required (
advanced ABDs will be considered). We seek candidates whose research is
within the solid-earth field including such specializations as volcanology,
structural geology, tectonics or mineralogy. Maine’s coastal and inland
rock exposures provide outstanding opportunities to study igneous,
metamorphic, and deformed minerals and rocks for teaching |
|
U******n
发帖数: 75 | 28 I dun think is the migration of Au/Pd into PMMA. do you check the height? it
may be the deformation of the PMMA or change in the surface morphology.
anyone can tell me if that may possible cause by the swollen by your so-call
"chemical environment" ?? i mean, when taking in or out from that storage.
anyway, now you bought the interest to me and others also
well, i also wish i am a wisom of that. good luck to u
>
Temperature
Symposium,
metal,
this
old
lower
either. |
|
F***Q
发帖数: 6599 | 29 请教一个问题：科研当中需要作一个phantom，对这个phantom的要求如下：
1.原材料最好比较透明（或者有些发白也可以），这样我们可以
添加不同的材料来实现不同的光学特性
2.phantom的可塑形需要非常的好，最好能够象橡皮泥
3.phantom需要是固体的，象jell的那种，但不能易碎
4.如果能够有一些弹性最好，因为我们需要压缩
我们曾经尝试过一种silicon rubber(Shaw A hardness为0.03)，只是有一些
弹性，几乎没有塑性。
不知道应该找那方面的材料或者资料？
先谢了！ |
|
f***8
发帖数: 571 | 30 现有的microtome在这个设定下很不稳定,一会厚一会薄的
这个是不是材料deform造成的. 冻得不够结实?
以前也用epoxy切过膜,感觉如果膜很薄很软,切的时候经常被从epoxy里扯出来,十分不
爽 |
|
c*s
发帖数: 2145 | 31 please use scientific language next time :)
first of all, it is not emulsion, it is dispersion polymerization.
the second, 全变成糊糊了 does not mean that the polymer spheres are deformed
, the state of your product migght be due to the low Tg OF THE polymer.
If so, no matter how you do, you can not get nice pictures. Otherwise, just
go ahead to take image of it. |
|
n*******r
发帖数: 213 | 32 how do you know it is not emulsion? maybe he did use surfactant
deformed
just |
|
c**********g
发帖数: 293 | 33 Can anybody download this paper for me? Thanks.
Molecular Crystals and Liquid Crystals,
Volume 254, September 1994 , pages 335 - 368 ,
Rheological Behavior of Thermotropic Liquid-Crystalline Polymers: Effects of
Thermal and Deformation Histories ,
谢谢. |
|
d***a
发帖数: 73 | 34 Please Note job opening is for PHD RCG (18 month prior or post graduation
date) only.
Candidates with chem, polymer, materials science background are encouraged
to apply.
Please reply to mailbox for further inquiry.
Description
Job Description: Packaging Engineers provide package development and
sustaining support for integrated circuit or semiconductor assemblies,
various other electronic components and/or completed units. Conducts tests
and research on basic materials and properties. Establish... 阅读全帖 |
|
h****z
发帖数: 1996 | 35 【 以下文字转载自 Chemistry 讨论区 】
发信人: hktkrz (hktk), 信区: Chemistry
标 题: [包子] paper help
发信站: BBS 未名空间站 (Fri Jan 20 16:45:41 2012, 美东)
5 baozi each, thanks
email: h***********[email protected]
1.
Mechanical properties of polymer mixtures: Effect of compatibility
DOI:10.1080/00222348008212826
Albert F. Yeea & Mary A. Maxwella
http://www.tandfonline.com/doi/abs/10.1080/00222348008212826
2.
Microdomain structure and some related properties of block copolymers. II.
Plastic deformation mechanisms of the glassy co... 阅读全帖 |
|
t*****e
发帖数: 4 | 36 taylor series for tensor?
how to do it? |
|
c*******s
发帖数: 179 | 37 正在做surface evolution的问题，用于3D object segmentation.
1. max principal curvature k1> min principal curvature k2. 包括符号吗? 还是只
是|k1|>|k2|. 对于elliptic convex surface, k1>k2>0. 对于elliptic concave
surface, 是 k2|k2|).
2. 对于一个3D elliptic sphere的上下两部分，例如下面的两个图中的突起部分，应
该一个是convex, 另外一个是concave吧。当用k2>0搜索符合条件的点，然后在进行
surface evolution, concave部分也有deformation. 能帮助解释一下吗？ |
|
p****o
发帖数: 13 | 38 Let's see. How about some simple stuff, like a galois deformation proof of
abelian reciprocity? I wonder where I can find the complete argument
involving iwasawa algebra etc. |
|
l***o
发帖数: 7937 | 39 In finite element method, matrix is a second-order tensor. If the matrix (3
by 3) describes a strain state, then the trace would be the volume strain. If the matrix is a Cauchy tensor describing the deformation of a hyperelastic material, the trace would be the first invariant I; If the matrix (3 by 3) describes a stress state, the trace would be three times the hydraulic pressure.
Extending to multi-dimensional spaces (R^n), the trace would be the volume
strain in R^n. |
|
S*****a
发帖数: 190 | 40 民科论调。真实情况是，开拓新领域的工作往往是伴随着解决困难问题而产生的，尤其
是像数论这样的领域。具体到Wiles，他的工作开拓了 Galois deformation 这个在数
论里已经持续热了20年至今的方向，引发的浪潮导致了若干个顽固老问题的新突破。
种。 |
|
g****a
发帖数: 1520 | 41 【 以下文字转载自 WaterWorld 讨论区 】
发信人: xiaoshushu (songshu), 信区: WaterWorld
标 题: 关于近期Fano流形上构造KE度量的工作(转载)
发信站: BBS 未名空间站 (Sat Aug 31 10:30:12 2013, 美东)
关于近期Fano流形上构造Kähler-Einstein度量的工作
最近公布的Fano流形上构造Kähler-Einstein度量的工作，是Kähler几
何近年来引人注目的进展，专家们正在验证。若验查无误，将证明丘成桐关于Fano流形
的构想与猜测是正确的。Donaldson的稳定性条件是其中的关键步骤，还需在代数几何
上把此概念搞清楚，这样丘猜测就为深刻理解Fano流形奠定了基础。由于近期发生了一
些混淆不清的事件，我们将相关工作的公开记录做了客观、学术的分析，望有助于澄清
事实。本文主要涉及文献的比较，阅读本文无需是专家，数学专业本科高年级学生或研
究生可读懂绝大部分。欢迎关于数学上的批评与指正。
本文分三个部分：
1) 陈-Don... 阅读全帖 |
|
g****a
发帖数: 1520 | 42 【 以下文字转载自 WaterWorld 讨论区 】
发信人: xiaoshushu (songshu), 信区: WaterWorld
标 题: 关于近期Fano流形上构造KE度量的工作(转载)
发信站: BBS 未名空间站 (Sat Aug 31 10:30:12 2013, 美东)
关于近期Fano流形上构造Kähler-Einstein度量的工作
最近公布的Fano流形上构造Kähler-Einstein度量的工作，是Kähler几
何近年来引人注目的进展，专家们正在验证。若验查无误，将证明丘成桐关于Fano流形
的构想与猜测是正确的。Donaldson的稳定性条件是其中的关键步骤，还需在代数几何
上把此概念搞清楚，这样丘猜测就为深刻理解Fano流形奠定了基础。由于近期发生了一
些混淆不清的事件，我们将相关工作的公开记录做了客观、学术的分析，望有助于澄清
事实。本文主要涉及文献的比较，阅读本文无需是专家，数学专业本科高年级学生或研
究生可读懂绝大部分。欢迎关于数学上的批评与指正。
本文分三个部分：
1) 陈-Don... 阅读全帖 |
|
S*****a
发帖数: 190 | 43 数论里解决困难问题和开拓新方向新领域往往是相伴着发生的。Langlands部分解决
Artin猜想的过程中开辟 functoriality 这个方向； Wiles, Taylor等人解决Fermat及
Sato-Tate猜想的过程中拓展 deformation theory 这个领域。 像 RH 这么深刻的问题
，倘能解决，不开辟几个新方向几乎是不可能的。 |
|
i*******n
发帖数: 166 | 44 首届数学突破奖，5人，每人300万美元
https://breakthroughprize.org/?controller=Page&action=news&news_id=18
Simon Donaldson, Stony Brook University and Imperial College London, for the
new revolutionary invariants of 4-dimensional manifolds and for the study
of the relation between stability in algebraic geometry and in global
differential geometry, both for bundles and for Fano varieties.
Maxim Kontsevich, Institut des Hautes Études Scientifiques, for work
making a deep impact in a vast variety of mathemati... 阅读全帖 |
|
t********w
发帖数: 347 | 45 The Breakthrough Prize in Mathematics is an award announced in 2013, and
funded by Yuri Milner and Mark Zuckerberg.
The first awards of the Prize, worth $3 million to each recipient, were made
in 2014:
Simon Donaldson – "For the new revolutionary invariants of 4-dimensional
manifolds and for the study of the relation between stability in algebraic
geometry and in global differential geometry, both for bundles and for Fano
varieties.
Maxim Kontsevich – "For work making a deep impact in a vast var... 阅读全帖 |
|
L*m
发帖数: 235 | 46 统计了近十余年来中国大陆高校在四大刊物上的发文，有些是挂名的，但不管如何，还
是都统计了。全名单如下
Annals of Mathematics
A proof of Demailly’s strong openness conjecture
Qi'an Guan（关启安 北京大学） Xiangyu Zhou（周向宇 中科院）
A solution of an L2 extension problem with an optimal estimate and
applications
Qi'an Guan（关启安 北京大学） Xiangyu Zhou（周向宇 中科院）
Construction of Cauchy data of vacuum Einstein field equations evolving to
black holes
Junbin Li（黎俊彬 中山大学） Pin Yu（于品 清华大学）
Special test configuration and K-stability of Fano varieties
Chi Li(李驰 普林斯顿大学 现stony broo... 阅读全帖 |
|
S*****a
发帖数: 190 | 47 Wiles也是通过建立 deformation theory 来证明这个 modularity定理的。 他的理论
在二十多年来又被Taylor，Harris，Kisin 乃至天才的 Scholze 等人大大发展至高秩
群的情形。
“建立理论” 和 “解决问题” 许多时候是密不可分的，尤其对当代数论而言。 |
|
x********i
发帖数: 905 | 48 http://iccm.mcm.ac.cn/dct/page/1
Invited Lectures
Group 1
Fan Qin: Cluster algebras and monoidal categorification
Fang Li: Positivity of acyclic sign-skew-symmetric cluster algebras via
unfolding method and some related topics
Cheng-Chiang Tsai: An attempt for affine Springer theory
Li Cai: The Gross-Zagier formula: arithmetic applications
Ming-Hsuan Kang: Geometric zeta functions on reductive groups over non-
archimedean local fields
Huanchen Bao: Canonical bases arising... 阅读全帖 |
|
F****y
发帖数: 145 | 49
There are discussions in detail about the correlations between
fracture-toughness and Charpy Energy in R. W. Hertzberg book (Deformation and
Fracture Mechanics of Engineering Materials, Ch.9). Table 9.3 lists some
correlations.
The hardness of a metal is about 3 times larger than its yield strength.
In general, the hardness of a engineering material is about 2 to 3 times
larger
than its yield strength. |
|
f*********e
发帖数: 71 | 50 老板说在applied mechanics里，这两个词完全等同，偶认为应该也可以指displacement
吧？ |
|
