Parametric resonance of 4th order in a nonlinear vibrating system under the influence of frictions

... (a0 , ) + ftfo ~ - cos4^o ô a ~ s i n y v ' V ’| \ here a prime denotes partial differentiation with respect to o0 Parametric resonance o f 4th order in nonlinear vibrating system 437 The characteristic ... plitude o f stationary oscillations then becomes 5.3) D 2a% = H ị a ị ^ + í ì - ^ + ịiaì)2, /f2 = - y ^ - Parametric resonance o f 4th order in nonlinear...

Ngày tải lên: 08/04/2015, 15:30

... traces in the mycorrhiza, which exhibited a high level of NAD-GDH activity as did the non-mycorrhizal roots (Fig B) As for aspartate aminotransferase, the distinct isoforms found in mycorrhizas, ... Spruce-Hebeloma sp associa- tion, gel electrophoresis confirmed the presence of NAD-GDH in the host cells (one band) and the presence of a high level of NADP-GDH...

Ngày tải lên: 09/08/2014, 04:20

... the parametric oscillatiòn On the phenomenon o f parametric resonance o f a nonlinear vibrator 283 It is to be noted that the linear oscillation of the mass m in a similar electromechanical system ... electromechanical system, the scheme of which is represented in Fie The vibrator consists of a cantilever beam and a block of mass /?/, which is made...

Ngày tải lên: 08/04/2015, 15:30

... CONCLUSION In this paper, we analytically investigate the possibility of parametric resonance of acoustic and optical phonons in CSSL We have obtained a general dispersion equation for parametric amplification ... gases In order to continue the ideas of Refs and 3, the purpose of this paper is to also study the parametric resonance of acoustic and opt...

Ngày tải lên: 30/10/2015, 20:54

... THE PARAMETRIC TRANSFORMATION OF CONFINED ACOUSTIC PHONONS AND CONFINED OPTICAL PHONONS IN QUANTUM WELLS Parametric transformation of confined acoustic phonons and confined optical phonons in quantum ... for confined acoustic and confined optical phonons in quantum wells, we use the general quantum distribution function [11]...

Ngày tải lên: 30/10/2015, 19:51

... Agricultural Hydrology, Kyoritsu Shuppan Co., Ltd, Tokyo (in Japanese) Mays P A and Edwards G S (2001) Comparison of heavy metal accumulation in a natural wetland and constructed wetlands receiving acid ... Transfers and transformations of zinc in constructed wetlands: mitigation of a refinery effluent, Ecological Engineering, 14, 279-292 Isozaki Y., Nakajima F and...

Ngày tải lên: 05/09/2013, 10:15

... Shin-ichiro and Wakao, Takahiro (1992) Metonymy: reassessment, survey of acceptability, and its treatment in a machine translation system Locating 1.1 Container for Content Dave drank the glasses The ... Metonymic interpretation and associative processes in natural language In Exxon has raised its price again Washington is insensitive to the needs of the pe...

Ngày tải lên: 23/03/2014, 20:20

... To find the area of a circle, use the formula A = ␲r2 r ■ To find the area of a parallelogram, use the formula A = bh h b ■ To find the area of a rectangle, use the formula A = lw w l ■ To find the ... negative reciprocals Data Analysis Review Many questions on the GRE will test your ability to analyze data Analyzing data can be in the form...

Ngày tải lên: 18/06/2014, 17:20

... more clinical and statistical cohesive set together rather than existing as separate scales For the same reasons, three domains (physical comfort, technical aspects of care, coordination of care) ... JC, AJT and JH were involved in guiding the study including the design and coordination All authors contributed to the interpretation of data and writing of the manuscript A...

Ngày tải lên: 20/06/2014, 15:20

... International Journal of Heat and Mass Transfer, vol 22, no 7, pp 1021–1032, 1979 H M Laun, M Rady, and O Hassager, “Analytical solutions for squeeze flow with partial wall slip,” Journal of Non-Newtonian ... Variational Inequalities and Their Applications, vol 88 of Pure and Applied Mathematics, Academic Press, New York, NY, USA, 1980 15 J Heinonen, T Kilpel¨ inen, and O Martio, No...

Ngày tải lên: 21/06/2014, 20:20

... year [19, 20 ] Soil Fine root was estimated by coring and dead roots in the trenched plots sorting remaining years after trenching The remaining fine root necromass was then compared to initial ... retrieved and processed as above This estimation of annual fine root production was corrected for the spatial and vertical variations of fine root biomass, assuming that fine...

Ngày tải lên: 08/08/2014, 14:21

... Case report: The management of advanced oral cancer in a Jehovah’s Witness using the Ultracision Harmonic Scalpel Peter J Kullar1*, Kristian Sorenson2, Ruwan Weerakkody1 and James Adams1 Department ... a statim dose of gram tranexamic acid and anaestethseia was induced with a combination of propofol (120mg), fentanyl (100mcg) and vecuronium (8mg) Anaesthesia...

Ngày tải lên: 09/08/2014, 02:21

... 12 mice housed individually in standard breeding cages Electronic system for the recording of locomotor activity The locomotor activity of the animal is recorded automatically by means of microwave ... parameters of locomotor activity Conclusion The aim of this study was to develop an apparatus consisting of a battery of radar sensors to allow th...

Ngày tải lên: 10/08/2014, 09:20

... Thus, parental viruses (e.g A and B) always dominate a dual infection and basically obscuring the characterization of replication-competent intersubtype HIV-1 recombinants, i.e present at very low ... the remaining 172 nt have nearly no recombination breakpoints These findings clearly indicate that pattern of breakpoints in intersubtype HIV-1 recombinants is shaped by...

Ngày tải lên: 13/08/2014, 01:20

... Figure strains Evolutionary relationships among non-recombinant HIV-1 Evolutionary relationships among non-recombinant HIV-1 strains The phylogenetic tree shows the subtypes of the M (main) HIV-1 ... scenario and drive the need of adapting the diagnostic and treatment strategies currently used in European Countries LB conceived of the study, analyzed data and...

Ngày tải lên: 13/08/2014, 05:22