Results 311 to 320 of about 6,470,188 (388)

[Ultracentrifugation in density gradient].

Postepy higieny i medycyny doswiadczalnej, 1968
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Density Gradient Centrifugation

Definitions, 1978
Richard Hinton, Miloslav Dobrota
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Independent gradient model based on Hirshfeld partition: A new method for visual study of interactions in chemical systems

Journal of Computational Chemistry, 2021
The powerful independent gradient model (IGM) method has been increasingly popular in visual analysis of intramolecular and intermolecular interactions in recent years.
T. Lu, Qinxue Chen
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Directional Magnetization Reversal Enables Ultrahigh Energy Density in Gradient Nanostructures

Advances in Materials, 2021
High‐performance ferromagnetic materials are essential for energy conversion and electronic devices. However, the random and nonuniform magnetization reversal in ferromagnetics limits their performance that can be achieved.
Li Lou, Yuqing Li, Xiaohong Li, Hailing Li, Wei Li, Yingxin Hua, W. Xia, Zhihe Zhao, Hai-Tian Zhang, M. Yue, Xiangyi Zhang   +10 more
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Prolonging Density Gradient Stability

Langmuir, 2009
For bottom-up particle fabrication, separation of complex particle assemblies from their precursor colloidal building blocks is critical to producing useable quantities of materials. The separations are often done using a density gradient sedimentation due to its simplicity and scalability.
Huda A, Jerri, William P, Sheehan, Charles E, Snyder, Darrell, Velegol   +3 more
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Density gradient system

Analytical Biochemistry, 1972
Abstract The hydrodynamic artifacts of turning over and droplet formation associated with isopycnic swinging-bucket rotor centrifugation have been virtually eliminated by increasing the viscosity of the layering solution. A 0.25% DNA solution was utilized for this purpose.
R.C. Leif, W.C. Kneece, R.L. Warters, H. Grinvalsky, R.A. Thomas   +4 more
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Formulating Reduced Density Gradient Approaches for Noncovalent Interactions.

Journal of Physical Chemistry A
This work elucidates several forms of reduced electron density gradient (RDG) to describe noncovalent interactions (NCIs). By interpreting the RDG as a local moment function, we systematically leveraged Weizacker's and Fermi's local moments.
Cristian Guerra, José Burgos, Leandro Ayarde‐Henríquez, Eduardo Chamorro   +3 more
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Density Gradient Techniques.

Chemical Reviews, 1963
The most sensitive and simplest method for determining minute changes in density is the density gradient column technique, which is capable of detecting density differences as small as 10/sup -7/ g/cc. A review is presented of the theory and formation of the gradient, the movement of the test object in the gradient, and the applications of the ...
Gerald Oster, Masahide Yamamoto
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Density-Gradient Expansion

1990
Publisher Summary This chapter discusses the expansion of the exchange and correlation energy density functional. It presents recent developments with regard to first principle derivations of the coefficients of these expansions. It also deals with an analysis of these expansions based on a study of the corresponding Fermi and Coulomb hole charge ...
Leonard Kleinman, Viraht Sahni
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Rapid, preparative, density-gradient electrophoresis

Analytical Biochemistry, 1961
Abstract A density-gradient electrophoresis apparatus is described, which has a fractionator that can cut the liquid column of the apparatus into small segments. This permits the clean separation of electrophoretic components without the use of a solid supporting medium. A sample run is presented showing the efficiency of the fractionator and showing
G L, CHOULES, R, BALLENTINE
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