Results 31 to 40 of about 2,186,596 (297)

A TGA/FTIR and Mass Spectral Study on the Thermal Degradation of Bisphenol A Polycarbonate [PDF]

open access: yes, 2004
The thermal degradation of polycarbonate under nitrogen was studied using TGA/FTIR, GC/MS and LC/MS as a function of mass loss. The gases evolved during degradation were inspected by in situ FTIR and then the evolved products were collected and analysed ...
Jang, Bok Nam, Wilkie, Charles A.
core   +2 more sources

Absence of zero-temperature transmission rate of a double-chain tight-binding model for DNA with random sequence of nucleotides in thermodynamic limit [PDF]

open access: yes, 2005
The zero-temperature transmission rate spectrum of a double-chain tight-binding model for real DNA is calculated. It is shown that a band of extended-like states exists only for finite chain length with strong inter-chain coupling.
Abrahams   +23 more
core   +1 more source

Mechanical response of random heteropolymers [PDF]

open access: yes, 2001
We present an analytical theory for heteropolymer deformation, as exemplified experimentally by stretching of single protein molecules. Using a mean-field replica theory, we determine phase diagrams for stress-induced unfolding of typical random ...
Best R.   +26 more
core   +2 more sources

Cascading time evolution of dissipative structures leading to unique crystalline textures

open access: yesIUCrJ, 2015
This article reports unique pattern formation processes and mechanisms via crystallization of materials under external flow fields as one of the general problems of open nonequilibrium phenomena in statistical physics.
Takeji Hashimoto, Hiroki Murase
doaj   +1 more source

The Vimos VLT Deep Survey: Compact structures in the CDFS [PDF]

open access: yes, 2005
We have used the Vimos VLT Deep Survey in combination with other spectroscopic, photometric and X-ray surveys from literature to detect several galaxy structures in the Chandra Deep Field South (CDFS).
A. Bongiorno   +49 more
core   +5 more sources

Linking Supply Chain Governance and Biosecurity in the Context of HPAI Control in Western Java: A Value Chain Perspective

open access: yesFrontiers in Veterinary Science, 2018
Despite extensive efforts to control the highly pathogenic avian influenza (HPAI), it remains endemic in Western Java, Indonesia. To understand the limited effectiveness of HPAI control measures, it is important to map the complex structure of the ...
Dikky Indrawan   +5 more
doaj   +1 more source

Structures and functions of the sugar chains of glycoproteins [PDF]

open access: yesJournal of Synthetic Organic Chemistry, Japan, 1988
Most proteins within living organisms contain sugar chains. Recent advancements in cell biology have revealed that many of these sugar chains play important roles as signals for cell‐surface recognition phenomena in multi‐cellular organisms. In order to elucidate the biological information included in the sugar chains and link them with biology, a ...
openaire   +4 more sources

One-dimensional polyhedral chain of ThCl6 encapsulated within single-walled carbon nanotubes

open access: yesAIP Advances, 2021
Using density functional theory together with dispersion correction, we optimize geometries and calculate encapsulation energies, charge transfer, and electronic structures of a one-dimensional ThCl6 chain encapsulated within single-walled carbon ...
Navaratnarajah Kuganathan
doaj   +1 more source

Reversible stretching of homopolymers and random heteropolymers

open access: yes, 2001
We have analyzed the equilibrium response of chain molecules to stretching. For a homogeneous sequence of monomers, the induced transition from compact globule to extended coil below the $\theta$-temperature is predicted to be sharp. For random sequences,
A. Halperin   +25 more
core   +2 more sources

Synthesis of 1 alpha,25-Dihydroxyvitamin D Analogues Featuring a S-2-symmetric CD-ring Core [PDF]

open access: yes, 2009
Three analogues of 1 alpha,25-dihydroxyvitamin D-3 (calcitriol), featuring a transfused decalin C, D-core with local S-2-symmetry, and possessing identical side-chain and seco-B,A-ring structures, have been synthesized starting from readily available ...
De Clercq, Pierre, Minne, Garrett
core   +2 more sources

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