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We construct three-dimensional families of small-amplitude gravity-driven rotational steady water waves of finite depth. The solutions contain counter-currents and multiple crests in each minimal period. Each such wave is, generically, a combination of three different Fourier modes, giving rise to a rich and complex variety of wave patterns. The bifurcation argument is based on a blow-up technique
Using harmonic maps we provide an approach towards obtaining explicit solutions to the incompressible two-dimensional Euler equations. More precisely, the problem of finding all solutions which in Lagrangian variables (describing the particle paths of the flow) present a labelling by harmonic functions is reduced to solving an explicit nonlinear differential system in C-n with n = 3 or n = 4. Whil
This paper develops a new approach in the analysis of the Camassa-Holm equation. By introducing a new set of independent and dependent variables, the equation is transformed into a semilinear system, whose solutions are obtained as fixed points of a contractive transformation. These new variables resolve all singularities due to possible wave breaking. Returning to the original variables, we obtai
Glukosamin ingår i glykosaminoglykaner i ledbrosk och synovialvätska. Tidigare gavs glukosamin som kosttillskott, men det klassificeras numera som ett icke-steroidliknande, antiinflammatoriskt läkemedel. Det beror på att flera kliniska studier har visat att glukosamin kan ge symtomlindring hos en del patienter med lätt till måttlig knäartros. Det brukar ta 2 - 4 veckor innan symtomlindringen kan m
Nizar Qabbani (1923-1998) är en av den moderna arabiska poesins främsta förnyare. Han är för närvarande både den mest läste och den mest kontroversielle, den mest älskade och den mest hatade av samtidens poeter i Arabvärlden.
Mahmoud Darwish's senaste diktsamlingar är skrivna inifrån Palestina 1997 och 2001, den sista sedan den andra intifadan brutit ut. Vi (Henry Diab & Kerstin Eksell) har förvärvat rättigheterna till dem från författaren. Översättningarna här är hämtade från vårt arbetsmaterial.
We analysed the role of the prechordal plate in forebrain development of chick embryos in vivo. After transplantation to uncommitted ectoderm a prechordal plate induces an ectopic, dorsoventrally patterned, forebrain-like vesicle. Grafting laterally under the anterior neural plate causes ventralization of the lateral side of the forebrain, as indicated by a second expression domain of the homeobox
In the early decades of the 17th century, when the idea of the Swedish colony of New Sweden was conceived and realized, America had a vague place in popular consciousness. Knowledge of the new continent was rather limited, and early Swedish images of it were influenced by tales told by foreign travellers and sailors, by pictorial representations in prints and maps, and by news and reports publishe
