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351	Investigation of the biophysical basis for cell organelle morphology Mayer, Jürgen 12 February 2008 (has links) It is known that fission yeast Schizosaccharomyces pombe maintains its nuclear envelope during mitosis and it undergoes an interesting shape change during cell division - from a spherical via an ellipsoidal and a peanut-like to a dumb-bell shape. However, the biomechanical system behind this amazing transformation is still not understood. What we know is, that the shape must change due to forces acting on the membrane surrounding the nucleus and the microtubule based mitotic spindle is thought to play a key role. To estimate the locations and directions of the forces, the shape of the nucleus was recorded by confocal light microscopy. But such data is often inhomogeneously labeled with gaps in the boundary, making classical segmentation impractical. In order to accurately determine the shape we developed a global parametric shape description method, based on a Fourier coordinate expansion. The method implicitly assumes a closed and smooth surface. We will calculate the geometrical properties of the 2-dimensional shape and extend it to 3-dimensional properties, assuming rotational symmetry. Using a mechanical model for the lipid bilayer and the so called Helfrich-Canham free energy we want to calculate the minimum energy shape while respecting system-specific constraints to the surface and the enclosed volume. Comparing it with the observed shape leads to the forces. This provides the needed research tools to study forces based on images. info:eu-repo/classification/ddc/570 ddc:570
352	Cascades of genetic instability resulting from compromised break-induced replication Vasan, Soumini January 2013 (has links) Indiana University-Purdue University Indianapolis (IUPUI) / Break-induced replication (BIR) is a mechanism to repair double-strand breaks (DSBs) that possess only a single end that can find homology in the genome. This situation can result from the collapse of replication forks or telomere erosion. BIR frequently produces various genetic instabilities including mutations, loss of heterozygosity, deletions, duplications, and template switching that can result in copy-number variations (CNVs). An important type of genomic rearrangement specifically linked to BIR is half crossovers (HCs), which result from fusions between parts of recombining chromosomes. Because HC formation produces a fused molecule as well as a broken chromosome fragment, these events could be highly destabilizing. Here I demonstrate that HC formation results from the interruption of BIR caused by a defective replisome or premature onset of mitosis. Additionally, I document the existence of half crossover instability cascades (HCC) that resemble cycles of non-reciprocal translocations (NRTs) previously described in human tumors. I postulate that HCs represent a potent source of genetic destabilization with significant consequences that mimic those observed in human diseases, including cancer. Comparative Genomic Hybridization Break-induced Replication Copy Number Variations Chromosomal Rearrangements Double-strand Break Repair Half Crossover Homologous Recombination Non-reciprocal Translocation Half crossover instability cascades DNA double-strand break DNA repair Genetic instabilities Array-CGH DNA repair -- Research -- Analysis DNA damage -- Research -- Analysis DNA microarrays -- Research -- Analysis DNA replication -- Regulation DNA -- Analysis Genetic recombination -- Research Mutagenesis -- Research Molecular biology -- Research Mitosis -- Regulation -- Research DNA polymerases DNA -- Synthesis Tumors -- Genetic aspects Cancer -- Genetic aspects
353	Jesus Christ’s humanity in the contexts of the pre-fall and post-fall natures of humanity: a comparative and critical evaluative study of the views of Jack Sequeira, Millard J. Erickson and Norman R. Gulley Mwale, Emanuel 12 1900 (has links) Bibliography: leaves 653-669 / Before God created human beings, He devised a plan to save them in case they sinned. In this plan, the second Person of the Godhead would become human. Thus, the incarnation of the second Person of the Godhead was solely for the purpose of saving fallen, sinful human beings. There would have been no incarnation if human beings had not sinned. Thus, the nature of the mission that necessitated the incarnation determined what kind of human nature Jesus was to assume. It was sin that necessitated the incarnation – sin as a tendency and sin as an act of disobedience. In His incarnational life and later through His death on Calvary’s cross, Jesus needed to deal with this dual problem of sin. In order for Him to achieve this, He needed to identify Himself with the fallen humanity in such a way that He would qualify to be the substitute for the fallen humanity. In His role as fallen humanity’s substitute, He would die vicariously and at the same time have sin as a tendency rendered impotent. Jesus needed to assume a human nature that would qualify Him to be an understanding and sympathetic High Priest. He needed to assume a nature that would qualify Him to be an example in overcoming temptation and suffering. Thus, in this study, after comparing and critically evaluating the Christological views of Jack Sequeira, Millard J. Erickson and Norman R. Gulley, I propose that Jesus assumed a unique post-fall (postlapsarian) human nature. He assumed the very nature that all human beings since humankind’s fall have, with its tendency or leaning towards sin. However, unlike other human beings, who are sinners by nature and need a saviour, Jesus was not a sinner. I contend that Jesus was unique because, first and foremost, He was conceived in Mary’s womb by the power of the Holy Spirit and was filled with the Holy Spirit throughout His earthly life. Second; He was the God-Man; and third, He lived a sinless life. This study contributes to literature on Christology, and uniquely to Christological dialogue between Evangelical and Seventh-day Adventist theologians. / Philosophy, Practical and Systematic Theology / D. Phil. (Systematic Theology) Adoptionism Alleles Anhypostatic Christology Anthropotokos Alternative Christology Apollinarianism Apthartodocetism Arianism Augustinian model Autosomal chromosomes Autosomal inheritance Born-again Christology Chalcedonian creed Christology from above Christotokos Chromosomes Chromosomal abnormalities Cloning Co-dominance Communicatio idiomatum Complementary base pairing Cri-du-chat syndrome Deoxyribonucleic acid (DNA) Diploid cell Docetism Dominant gene Down syndrome Dynamic incarnation Dynamic monarchianism Eastern Orthodox Christology Ebionitism Embryogenesis Eutychianism Evangelical Christology Existential Christology Functional Christology Genes Gene mutation Gene expression Genome Genotype Gnosticism Hamartiology Haploid cell Heterozygous History of Jesus’ Christology Homoiousios Theology Homozygous Human cloning Immaculate conception Incarnation Incarnational life Inheritance Karyotype Kenoticism Klinefelter syndrome Logos-flesh Christology Meiosis Mitosis Modalistic monarchianism Monarchianism Monophysitism Mutation Nestorianism Nicene Creed One-nature Christology Ontological Christology Organogenesis Patripassianism Phenotype Polygenic inheritance Post lapsarian view/model Prelapsarian view/model Recessive gene Roman Catholic Christology Sabellianism Seventh-day Adventist Christology Sex chromosomes Sex-linked inheritance Speculative Christology Theotokos Turner syndrome Two-natures Christology Unique post-fall Christology Socinianism Soteriology Theotokos Turner syndrome Two-natures Christology Unique post-fall Christology Virginal conception 231.4 Seventh-Day Adventists -- Doctrines Salvation -- Seventh-Day Adventists Fall of man -- History of doctrines Jesus Christ -- History of doctrines Sequerra, Jack Erickson, Millard J. Gulley, Norman R.

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