The classical far field concept of wave velocities has its merits while exibiting intrinsic difficulties. A general local approach for the definition of velocities and especially phase velocities for waves avoiding these difficulties is proposed. It includes the classical definitions as particular cases and can be applied to waves of an arbitrary structure, and to arbitrary propagation media as...

Previous research on corporate household and corporate householding has presented examples, literature review, and working definitions. In this paper, we first improve our understanding of the area by developing a typology of corporate householding tasks and knowledge requirements. We stress the importance of “context” for use to get the appropriate answer for each task. Then we propose an appr...

Case Report A 21-year-old male African Negro was admitted to hospital with pneumonia. Routine examination of the right fundus revealed a prominent vascular loop arising from the nasal aspect of the physiological cup at about 5 o'clock (Figure). It was superior to the inferior nasal vein and projected about 4 dioptres into the vitreous. One limb ran parallel to the visual axis and then curved su...

This paper improves our previous research effort [1] by providing an efficient method for kernel loop unrolling minimisation in the case of already scheduled loops, where circular lifetime intervals are known. When loops are software pipelined, the number of values simultaneously alive becomes exactly known giving better opportunities for kernel loop unrolling. Furthermore, fixing circular life...

This study portrays the extent of Domestic Child Labour (DCL) Students and mathematics learning at primary level mathematics. It concentrates on the specific themes of emerging research questions such as situation of learning environment to the DCL students, and influencing factors that affect the learning of DCL students in learning mathematics. In dealing with these research questions, I used...

In an optically active liquid the diffraction angle depends on the circular polarization state of the incident light beam. We report the observation of circular differential diffraction in an isotropic chiral medium, and we demonstrate that double diffraction is an alternate means to determine the handedness (enantiomeric excess) of a solution.

Introducción. La demencia es una enfermedad prioritaria en los servicios de salud países vías desarrollo. El 30% pacientes hipertensos sin compromisos otros órganos presentan daño vascular encefálico y deterioro las funciones cognitivas.Es importante por tanto contar con test tamizaje adecuado. Objetivos. Evaluar el status cognitivo utilizando forma sistemática MoCA. la sensibilidad especificid...

gene delivery might be affected by several tribulations based on carrier/vector applied. bacteriophages lambda and m13 have different genome conformations; linear double-stranded and circular single-stranded respectively. therefore, it might be expected that these two common classes of gene delivery vehicles will have different capacity for gene delivery and expression in eukaryote cells. to ad...

Digestion of mouse L cell mitochondrial DNA with EcoRI restriction endonuclease produces two linear duplex fragments comprising 86.3 +/- 2.0% and 14.2 +/- 1.0% of the circular genome length (16,000 +/- 470 nucleotide pairs). Digestion of human HeLa cell mitochondrial DNA with EcoRI produces three linear duplex fragments comprising 49.2 +/- 1.0%, 44.4 +/- 0.9%, and 6.4 +/- 0.4% of the circular g...

In pulsed field gradient gel electrophoresis (PFGE) the intact deproteinized circular DNA of Mycoplasma (800 kb) and Escherichia coli (4700 kb) remains trapped in the slot. We show here that gamma-irradiation of the DNA in agarose plugs is a convenient method to partially convert these circles into full-length linears, migrating with the expected mobility in PFGE. We have used this method to st...