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Factors Governing the Three-Dimensional Hydrogen Bond Network
Factors Governing the Three-Dimensional Hydrogen Bond Network

... calculation.5 The combination of a rigid chemical structure with this strong hydrogen bond results in high thermal resistivity, as mentioned above. Clarification of the origins of such a difference in hydrogen bond structure between PPTA and PMIA is important for understanding the essential differen ...
Chiral classical states in a rhombus and a rhombi chain of
Chiral classical states in a rhombus and a rhombi chain of

... a sign-reversed two-band scenario, the so-called s± state, has been recently proposed in the context of the iron-based superconductors [20]. The JJ rhombi chain of one-band superconductors (OBS) is one of the most simple geometries where frustration effects have been studied theoretically and experi ...
ClickLine CoverLine StandardLine
ClickLine CoverLine StandardLine

... Rubber profiles for high visual requirements The synthesis of practicality and appearance The aluminium profile is covered by the lateral attachment principle. This results in a uniform appearance that blends very well even into even demanding designs. The installation is quick and easy: simply clic ...
Voltage-Driven DNA Translocations through a Nanopore
Voltage-Driven DNA Translocations through a Nanopore

... through the pore, and a is the base to base distance along the DNA polymer. Assuming z 苷 1, V 苷 125 mV, and a 苷 4 Å, the force is estimated to be F 艐 5kB T 兾a 艐 44 piconewtons (pN). Equivalently, F can be seen as determining the ratio of the probabilities of moving one unit forward and one unit back ...
Dielectric Elastomer Generators: How Much Energy Can Be Converted?
Dielectric Elastomer Generators: How Much Energy Can Be Converted?

... 0, the neo-Hookean model is recovered, with the small–strain shear modulus μ = N kT . Note that n sets the limit stretch, and μ sets the amplitude of the stress. Fig. 3(a) fits the eight-chain model to existing experimental data for VHB under fast mechanical uniaxial loading (strain rate = 1.8 s−1 ) ...
Silicone Elastomers UV-Cure Silicone Rubber
Silicone Elastomers UV-Cure Silicone Rubber

... PRODUCTS OR SERVICES DESCRIBED HEREIN. Each user bears full responsibility for making its own determination as to the suitability of Supplier’s materials, services, recommendations, or advice for its own particular use. Each user must identify and perform all tests and analyses necessary to assure t ...
Medical Instrumentation
Medical Instrumentation

... gage of gage factor of -100. As pressure is placed in the diaphragm, the same strain occurs in the each strain gage and the responsiveness is 10-5%/mmHg. As not, the strain gage is 50. suppose the relationship between pressure and strain is linear.  (a) When pressure is changed from 0 to 50mmHg, Wh ...
Origin of the Efficient Polaron Pair Dissociation in Polymer
Origin of the Efficient Polaron Pair Dissociation in Polymer

... geminate pair separation, Arkhipov et al. proposed the analytic dark dipole model, based on the experimental finding of vacuum level shifts at the heterojunction of oligomer/fullerene bilayers.10 We point out that optical investigations on spin coated polymer films show that the polymer chains were ...
Scapular Stabilization
Scapular Stabilization

... called the “scapulohumeral rhythm.” Because the shoulder socket is part of the scapula, many conditions involving the shoulder joint cause secondary problems related to scapular motion and position. These secondary problems can, in turn, worsen the primary condition. • What is scapular dyskinesia?: ...
Project_fracture_crack.doc
Project_fracture_crack.doc

...  For solder creep and stress relaxation is significant relative to the initial plastic strains due to yielding, determination of W or p is not straightforward. The total plastic strains increase with time as the strain energy elastically stored in the assembly (component, solder joint, PCB) is c ...
Structure and packing of phosphatidylcholines in lamellar and
Structure and packing of phosphatidylcholines in lamellar and

... At higher concentrations these detergents form liquid-crystalline structures, among which the hexagonal (HI) phase is frequently of particular extension and stability (depending on the size of the polyoxyethylene moiety).* It has been shown in an earlier study that phospholipids, when incorporated i ...
ENTROPY
ENTROPY

... The above-mentioned concept of entropy as the averaged uncertainty of a distribution, was stated in 1948 by the mathematician C. Shannon working at Bell Labs on Information Theory, trying to measure uncertainty, but the name entropy was coined in 1865 by the thermodynamicist R. Clausius for the int ...
Thermodynamics: the Second Law
Thermodynamics: the Second Law

... When a change occurs, the total energy of an isolated system remains constant but it is parceled out in different ways. Can it be that the direction of change is related to the distribution of energy? The dispersal of energy Consider a ball (the system) bouncing on the floor (the surroundings). The ...
Polymer Electrolytes
Polymer Electrolytes

... ● Semiconductor: rigid lattice, doping is well described by band models → doping processes; introduction of impurities into the crystal lattice with the intergap energy levels near CB or VB; conduction proceeds via a coherent propagation of electrons and/or holes across the lattice ● Polymer: flexib ...
Document
Document

... left to itself; no action from outside the system is necessary to bring it about. • A nonspontaneous process is one that cannot take place in a system left to itself. • If a process is spontaneous, the reverse process is nonspontaneous, and vice versa. • Example: gasoline combines spontaneously with ...
Stress and Strain
Stress and Strain

... 13.6 Stress–Strain Diagrams ...
Energy dissipation and dispersion effects in granular media
Energy dissipation and dispersion effects in granular media

... the forces are found, time is advanced by the explicit integration of the corresponding Newton equations of motion. There exist various models for calculating normal contact forces: some of them based on the viscoelasticity 关14,42兴, others on the elastoplasticity of the material properties of the co ...
Alkyl Chain Length Dependence of the Dynamics and Structure in
Alkyl Chain Length Dependence of the Dynamics and Structure in

... though minor, are an indication that the chain length does have some impact on the structure of the ionic regions, resulting in changes in the intermolecular interactions between the SeCN− vibrational probe and its environment. Infrared PSPP experiments were used to measure the vibrational lifetimes ...
Effect of intermolecular disorder on the intrachain charge transport p P. Prins,
Effect of intermolecular disorder on the intrachain charge transport p P. Prins,

... be limited by disorder along the polymer chains. Effects that cause such intrachain disorder include torsion of the polymer backbone and the presence of chemical defects that can act as barriers to charge transport.17–19 In addition, intrachain disorder can originate from interchain interactions. Pl ...
On the nonlinear stress-strain behavior of nematic elastomers
On the nonlinear stress-strain behavior of nematic elastomers

... from the coupling between these two preferred directions. We take into account this coupling via the variables of relative rotations between the two directions. For this purpose, we have extended the variables of relative rotations to the nonlinear regime. In addition, we generalize the concept in s ...
7.9 Other polyamide polymers. Man
7.9 Other polyamide polymers. Man

... 7.9 Other polyamide polymers. Man-made polyamide polymers can be made by reacting the carboxylic acid and amine functional groups of multiple monomers and linking them together by means of amide linkages. Some well known examples are shown below: Nylon 6 ...
Flow chart of the production chain of animal fat and animal
Flow chart of the production chain of animal fat and animal

... A pest control programme is in place that prevents pests and toxins from entering the food chain during the processing of category 3 animal by-products. ...
Solid State Polyselenides and Polytellurides: A Large Variety of Se
Solid State Polyselenides and Polytellurides: A Large Variety of Se

... The dimorph TlTe is a nice example of a material exhibiting different Te atom chains [65]. The room temperature (RT) modification of TlTe represents an equidistant ஶଵሾ Te–] chain with Te–Te distances of 3.08 Å. A parallel running, second linear equidistant Te atom chain within the same structure is ...
Document
Document

... compare it to a linear molecule of similar chemistry, we might be able to get information on the nature of the branching Luckily, we have some methods that can be used to measure these properties GPC/Viscometry allows us to measure the intrinsic viscosity of a polymer molecule, a property related to ...
4 Constitutive Equations
4 Constitutive Equations

... they are not yet a closed set of equations, since they do not distinguish one material from another. In addition, constitutive laws1 are required which should in appropriate form specify the material behavior as a function of strain and stress state. Here we make no attempt to review the huge body o ...
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Rubber elasticity

Rubber elasticity, a well-known example of hyperelasticity, describes the mechanical behavior of many polymers, especially those with cross-links.
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