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  • Open Access

    ARTICLE

    Reproduction of Pavonia cymbalaria (Malvaceae), a native species with ornamental potential

    Torres, YA1, MA Long2, SM Zalba1

    Phyton-International Journal of Experimental Botany, Vol.77, pp. 151-160, 2008, DOI:10.32604/phyton.2008.77.151

    Abstract Pavonia cymbalaria A. St.-Hil. & Naudin (Malvaceae) is a native species of the southern mountains in the Province of Buenos Aires. Its morphological characteristics become it as a potential candidate for ornamental use. Crop requirements and seed germination were evaluated for this species in this study. Different treatments were applied to 640 mericarps: removal of carpel residues, mechanical scarification or exposition of mericarps and nude seeds to cold conditions. An untreated control was used for each of these treatments. Germination only occurred on nude seeds; this implies the existence of an extrinsic dormancy imposed by the… More >

  • Open Access

    ABSTRACT

    Kinematic Analysis of Lumbar Spine Undergoing Extension and Dynamic Neural Foramina Cross Section Measurement

    Yongjie Zhang1, Boyle C. Cheng2, Changho Oh1, Jessica L. Spehar2, James Burgess3

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.7, No.2, pp. 57-62, 2008, DOI:10.3970/icces.2008.007.057

    Abstract The spinal column plays a vital biomechanical role in the human body by providing structural support and facilitating motion. As degenerative changes occur in the spine, however, chronic pain can result which frequently forces patient to seek surgical treatment. Such treatments seek to address that pain, frequently by addressing both spinal motion and structural integrity. More >

  • Open Access

    ARTICLE

    Kinematic Analysis of Lumbar Spine Undergoing Extension and Dynamic Neural Foramina Cross Section Measurement

    Yongjie Zhang1, Boyle C. Cheng2, Changho Oh1, Jessica L. Spehar2, James Burgess3

    CMES-Computer Modeling in Engineering & Sciences, Vol.29, No.2, pp. 55-62, 2008, DOI:10.3970/cmes.2008.029.055

    Abstract The spinal column plays a vital biomechanical role in the human body by providing structural support and facilitating motion. As degenerative changes occur in the spine, surgical treatment may be necessary in certain instances. Such treatments seek to address pain, frequently through the restriction of spinal motion. Traditional spinal implant devices are designed to restrict the motion of a functional spinal unit (FSU) but newer device designs allow for semi-constrained motion such as spinal arthroplasty devices. In this study, a sequence of fluoroscopic imaging data was recorded during the flexibility protocol with an interspinous process… More >

  • Open Access

    ARTICLE

    Transgenic wheat plants resistant to herbicide BASTA obtained by microprojectile bombardment

    MARIANA N. MELCHIORRE, HERNÁN R. LASCANO, VICTORIO S.TRIPPI

    BIOCELL, Vol.26, No.2, pp. 217-223, 2002, DOI:10.32604/biocell.2002.26.217

    Abstract Wheat (Triticum aestivum) transgenic plants of an important commercial cv (Oasis) was obtained with an efficient and short procedure. First, the optimum conditions for the embriogenic calli generation from inmature embryos with a high regeneration percentage were established. The transformation of calli was performed by high velocity microprojectile bombardment, using the pAHC25 plasmid, which contains the reporter gene β-glucuronidase (GUS) and the selectable BAR gene which confers resistance to the herbicide Basta. The transformations were confirmed by β-glucuronidase assay activity, PCR and Southern blot analysis. The efficiency of this procedure was high and similar to other More >

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