Contact mechanics

This study focuses mainly on the normal stresses that are caused by applied forces. As a case study, the present work aims at investigating the bi-dimensional contact mechanics of wavy cosinusoidal anisotropic finite planes. To achieve this objective, results on the displacement and stress component are first calculated with the help of the Lekhnitskii formalism.

9p vibecca 01-10-2024 1 1   Download

Equivalent inclusion approach is then developed to account for possible diversions, such as non-idealistic geometric forms of the inhomogeneities, imperfect matrix-inclusion contacts, filler dispersions, and when the particular values of the fillers’ properties are unspecified, using available numerical or experimental reference conductivity data for particular composites.

28p capheviahe27 23-02-2021 25 4   Download

The need to develop a highly stable suspension system capable of operating in multi terrain surfaces while keeping all the wheels in contact with the ground. To design a mechanism that can traverse terrains where the left and right rockers individually climb different obstacles.

6p lucastanguyen 01-06-2020 17 1   Download

The study was carried out during 2013-14 in Meerut district of Uttar Pradesh state to focus on the sugarcane growers regarding impact of knowledge on adoption level of IPM practices. The 80 contact farmers were selected as respondents. The study revealed that the maximum knowledge gap was found to be existing in previous crop residues, crop rotation, hand picking of the insect and their destruction, hot air and water treatment, light and pheromone trap, microbial control, use of natural enemies, resistant varieties, biopesticides/ bio-agents, application and dose of different pest etc.

7p chauchaungayxua6 26-06-2020 20 3   Download

An Eddy current damper uses magnets to suppress vibrations due to external excitations. These dampers also called electromagnetic dampers, have advantages of no mechanical contact, high reliability and stability, but require a relatively large volume and mass to attain a given amount of damping.

8p tohitohi 19-05-2020 26 3   Download

This article is dealing with the study on the heterogeneous graft-reaction of maleic anhydride onto polyethylene. The reaction was carried out on the brabender mixer extruder. The optimal reaction conditions were found as follows, the temperature: 190o C, the reaction time: 6 minutes, the screw speed: 60 r/min., the %weight content of PE, MA and DCP: 80, 1.5 and 0.2, respectively. The success of the reaction was confirmed by the IR-spectroscopy, contact angles measurements and mechanical property testing.

6p uocvong01 24-09-2015 62 4   Download

Abdominal-B(Abd-B) is a complex homeotic gene with a difficult task: one transcript determines the identity of four different abdominal segments throughout development in Drosophila.

7p fptmusic 11-04-2013 38 2   Download

Residues that mediate helix–helix interactions within the seven transmem-branes (TM) of G protein-coupled receptors are important for receptor biogenesis and the receptor switch mechanism. By contrast, the residues directly contacting the lipid bilayer have only recently garnered attention as potential receptor dimerization interfaces.

15p viettel02 22-02-2013 23 2   Download

BH3 interacting domain death agonist (Bid), a pro-apoptotic member of the Bcl-2 family of proteins, is activated through cleavage by caspase-8. The active C-terminal fragment of Bid (tBid) translocates to the mitochon-dria where it interacts with cardiolipins at contact sites and induces the release of cytochromecby a mechanism that is not yet fully understood.

17p viettel02 20-02-2013 29 2   Download

The vascular endothelium is exposed to an array of physical forces, includ-ing shear stress via blood flow, contact with other cells such as neighboring endothelial cells and leukocytes, and contact with the basement membrane. Endothelial cell morphology, protein expression, stiffness and cytoskeletal arrangement are all influenced by these mechanochemical forces.

14p mobifone23 18-01-2013 39 2   Download

Is a branch of polymer science dealing with analysis and characterisation of polymers. üThe complication of macromolecular chains, the dispersion in molecular weight, tacticity, crystallinity, orientation, composition of polymers etc. and complex morphological systems ⇒ analysis of polymer ≠ the small organic materials ⇒ Focus on viscoelastic properties, dynamic mechanical testing.

114p buitiendung87 06-01-2011 339 154   Download

Clinical Manifestations Pharyngitis Although seen in patients of all ages, GAS pharyngitis is one of the most common bacterial infections of childhood, accounting for 20–40% of all cases of exudative pharyngitis in children; it is rare among those under the age of 3. Younger children may manifest streptococcal infection with a syndrome of fever, malaise, and lymphadenopathy without exudative pharyngitis. Infection is acquired through contact with another individual carrying the organism.

6p colgate_colgate 21-12-2010 83 3   Download

Metal cutting puts extreme demands on the tool and tool material through conditions of high forces, high contact pressures, high temperatures, and intense chemical attack by difficult to cut work materials. In addition, the tool geometry and cutting conditions in terms of sharp edges, cyclic engagement and presence of cutting fluid will add to the severity. Most often cutting tools are used close to their ultimate resistance against these loads, especially to the limiting thermal and mechanical stresses. ...

14p cuunien 20-12-2010 114 17   Download

Transmission to New Hosts As part of the pathogenic process, most microbes are shed from the host, often in a form infectious for susceptible individuals. However, the rate of transmissibility may not necessarily be high, even if the disease is severe in the infected individual, as transmissibility and virulence are not linked traits.

5p thanhongan 07-12-2010 80 5   Download

Immune Mediators of Antitumor Effects The very existence of a cancer in a person is testimony to the failure of the immune system to deal effectively with the cancer.

5p konheokonmummim 03-12-2010 82 3   Download

Central Mechanisms The Spinal Cord and Referred Pain The axons of primary afferent nociceptors enter the spinal cord via the dorsal root. They terminate in the dorsal horn of the spinal gray matter (Fig. 12-3). The terminals of primary afferent axons contact spinal neurons that transmit the pain signal to brain sites involved in pain perception. When primary afferents are activated by noxious stimuli, they release neurotransmitters from their terminals that excite the spinal cord neurons. The major neurotransmitter they release is glutamate, which rapidly excites dorsal horn neurons.

5p ongxaemnumber1 26-11-2010 101 6   Download

Drug Administration be very precise. (Standardized medicinal teaspoons and tablespoons are available.) Eye drops and nose drops (A) are designed for application to the mucosal surfaces of the eye (conjunctival sac) and nasal cavity, respectively. In order to prolong contact time, nasal drops are formulated as solutions of increased viscosity. Solid dosage forms include tablets, coated tablets, and capsules (B). Tablets have a disk-like shape, produced by mechanical compression of active substance, filler (e.g., lactose, calcium sulfate), binder, and auxiliary material (excipients).

14p bigbaby87 04-09-2010 132 15   Download