Transverse Vibrations in Beams Supported by a Piece-Wise Homogeneous Visco- Elastic Foundation

Transversal vibrations induced by a load moving uniformly along an infinite beam resting on a piece-wise homogeneous visco-elastic foundation are studied. Special attention is paid to the additional vibrations, conventionally referred to as transition radiations, which arise as the point load traverses the place of foundation discontinuity. The governing equations of the problem are solved by the normalmode analysis. The solution is expressed in a form of infinite sum of orthogonal natural modes multiplied by the generalized coordinate of displacement. The natural frequencies are obtained numerically exploiting the concept of the global dynamic stiffness matrix. This ensures that the frequencies obtained are exact. The methodology has restrictions neither on velocity nor on damping. The approach looks simple, though, the numerical expression of the results is not straightforward. A general procedure for numerical implementation is presented and verified. To illustrate the utility of the methodology parametric optimization is presented and influence of the load mass is studied. The results obtained have direct application in analysis of railway track vibrations induced by high-speed trains when passing regions with significantly different foundation stiffness.

L'interprète communautaire: une pièce centrale dans le puzzle de la consultation interculturelle [The community interpreter: a central piece in the puzzle of the intercultural consultation]

As a consequence of growing global migration, physicians in French speaking Switzerland often face communicational difficulties with allophone patients. This paper first discusses advantages and shortcomings of various ways of dealing with this kind of situations. The indication of using professional interpreters will be addressed, as well as some specific therapeutic, linguistic and relational features of triadic consultations involving a physician, a patient and an interpreter. Finally, useful practical information and advices are provided to clinicians in order to help them optimize their consultations with allophone patients.

Identification of secretory IgA, free secretory piece and serum IgA in the ovine and caprine species.

Caprine and ovine IgA were identified by cross-reaction with anti-human and anti-bovine IgA sera in colostrum, mature milk, saliva, urine and serum. Secretory component (SC) was shown in the free form and associated with polymeric serum IgA in secretions. Mean molecular weights were determined for the IgA and the free secretory components. The high IgA content of saliva suggested that it was a major secretory immunoglobulin in these species. Traces of secretory IgA were also found in normal sera but most of the serum IgA had no secretory determinant. Secretory IgA, serum IgA and free secretory component were purified. Levels of the sheep and goat immunoglobulins were measured in various fluids.

IgA with "secretory piece" in bovine colostrum and saliva.

We have shown that in bovine colostrum and saliva there is a secretory IgA with a sedimentation, coefficient of 11S and a secretory piece, previously unknown and comparable with the 11S IgA described in human and rabbit external secretions. These secretory IgA contain molecules of 7S IgA with an additional protein segment called the transport or secretory piece1-5. Furthermore, the free form of the secretory piece is identified in bovine colostrum and also in mature milk which contains very little IgA.

Piece for 12 players

Soitinnus: kamariorkesteri.

La piece de cabinet , dédiée aux poëtes du temps

[Mazarinade. 1649]

Calculations on a piece of “Long Point, Head Quarters” stationary with the “Long Point Company, Canada” seal

Calculations on a piece of “Long Point, Head Quarters” stationary with the “Long Point Company, Canada” seal. There are land calculations on this sheet, n.d.

Partial piece of post office registration to J.M. Ball of Toronto, Ont.

Partial piece of post office registration to J.M. Ball of Toronto, Ont. Half of ticket is missing. Text is affected, Jul. 5, 1875.

Musotte : piece en trais actes

UANL

Modified section method for laser-welding of ill-fitting cp Ti and Ni-Cr alloy one-piece cast implant-supported frameworks

P>This study aimed to verify the effect of modified section method and laser-welding on the accuracy of fit of ill-fitting commercially pure titanium (cp Ti) and Ni-Cr alloy one-piece cast frameworks. Two sets of similar implant-supported frameworks were constructed. Both groups of six 3-unit implant-supported fixed partial dentures were cast as one-piece [I: Ni-Cr (control) and II: cp Ti] and evaluated for passive fitting in an optical microscope with both screws tightened and with only one screw tightened. All frameworks were then sectioned in the diagonal axis at the pontic region (III: Ni-Cr and IV: cp Ti). Sectioned frameworks were positioned in the matrix (10-Ncm torque) and laser-welded. Passive fitting was evaluated for the second time. Data were submitted to anova and Tukey-Kramer honestly significant difference tests (P < 0 center dot 05). With both screws tightened, one-piece cp Ti group II showed significantly higher misfit values (27 center dot 57 +/- 5 center dot 06 mu m) than other groups (I: 11 center dot 19 +/- 2 center dot 54 mu m, III: 12 center dot 88 +/- 2 center dot 93 mu m, IV: 13 center dot 77 +/- 1 center dot 51 mu m) (P < 0 center dot 05). In the single-screw-tightened test, with readings on the opposite side to the tightened side, Ni-Cr cast as one-piece (I: 58 center dot 66 +/- 14 center dot 30 mu m) was significantly different from cp Ti group after diagonal section (IV: 27 center dot 51 +/- 8 center dot 28 mu m) (P < 0 center dot 05). On the tightened side, no significant differences were found between groups (P > 0 center dot 05). Results showed that diagonally sectioning ill-fitting cp Ti frameworks lowers misfit levels of prosthetic implant-supported frameworks and also improves passivity levels of the same frameworks when compared to one-piece cast structures.

Brands cho(a)mping at the bit for a piece of Suarez social media action

If you’re a fan of soccer, brands, or social media you’ve been inundated online the past 24 hours. Uruguay’s World Cup forward Luis Suarez apparently bit another player before they defeated the Italian team during their final group game on Tuesday. This is his third biting offense. Good luck with those disciplinary hearings FIFA.