We consider type II superstring compactifications on the singular Spin(7) manifold constructed as a cone on SU(3)/U(1). Based on a toric realization of the projective space CP, we discuss how the manifold can be viewed as three intersecting Calabi-Yau conifolds. The geometric transition of the manifold is then addressed in this setting. The construction is readily extended to higher dimensions ...

The aim of this paper is to characterize $3$-dimensional $N(k)$-paracontact metric manifolds satisfying certain curvature conditions. We prove that a $3$-dimensional $N(k)$-paracontact metric manifold $M$ admits a Ricci soliton whose potential vector field is the Reeb vector field $xi$ if and only if the manifold is a paraSasaki-Einstein manifold. Several consequences of this result are discuss...

Interpretation of ground penetrating radar data from the 3.7 Ma old Roter Kamm impact crater, together with results of petrographic and sedimentologic analysis of sediment samples, indicates that --40 m or more of slope sensitive degradation f the rim was accompanied by reduction of wall slopes well below the angle of repose and nearly complete rosion of ejecta ,urn •uuu,u the crater. •,my u.c ...

Ein roter Stern ist geboren neuer Weg zur Herstellung großer und unlöslicher molekularer Starphene durch Decarbonylierung löslicher Vorstufen im festen Zustand wird Forschungsartikel auf S. 7831 von Andrej Jancarik, Andre Gourdon et al. beschrieben. Rastertunnelmikroskopie/-spektroskopie Ultrahochvakuum Absorptionsspektroskopie in gefrorenen Matrizen zeigen, dass die elektronische Delokalisieru...

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The one dimension computational model of a sequential injection engine, which runs on compressed natural gas (CNG) with spark ignition, is developed for this study, to simulate the performance of gas flow pressure profile, under various speed conditions. The computational model is used to simulate and study of the steady state and transient processes of the intake manifold. The sequential injec...