159 research outputs found

    Auswirkungen einer Hecke auf Bodenwasserhaushalt, Bodenparameter und Ertrag in angrenzenden AckerflÀchen

    Get PDF
    Bei trockenen Bedingungen wurde ein positiver Einfluss auf den Pflanzenertrag aufgrund des Verdunstungsschutzes von Hecken nachgewiesen In einem interdisziplinĂ€ren Projekt auf einem ökologisch wirtschaftenden Betrieb, östlich von Wien, wird das Ausmaß des Einflusses einer Hecke auf das gespeicherten Bodenwasser, auf ausgewĂ€hlte Bodenparameter und den Pflanzenertrag in die angrenzende AckerflĂ€che seit dem Jahr 2003 untersucht. Bei jedem Luzerneschnitt wurde der höchste Ertrag unmittelbar neben der Hecke erzielt. Die statistische Auswertung ergab jedoch nur beim dritten Luzerneschnitt und beim Gesamtluzerneertrag einen signifikanten Zusammenhang zwischen Ertrag und Entfernung zur Hecke. Beim dritten Schnitt Mitte August ist eine deutliche kontinuierliche Ertragsabnahme mit zunehmender Entfernung zur Hecke erkennbar, was durch den geringeren Bodenwassergehalt im Hochsommer mit grĂ¶ĂŸerem Heckenabstand erklĂ€rt werden kann

    Die vaskulĂ€re Anatomie der vorderen Bauchwand: ein Beitrag zur Vermeidung von GefĂ€ĂŸverletzungen bei der laparoskopischen Chirurgie

    Get PDF
    Die Verletzung der in der Bauchwand verlaufenden GefĂ€ĂŸe ist eine potentielle Komplikation aller laparoskopischer Verfahren. Die Kenntnis der Anatomie bildet die Grundvoraussetzung zur Vermeidung derartiger Komplikationen. An 28 Leichnamen wurde der Verlauf der GefĂ€ĂŸe der Bauchwand bestimmt und Regionen fĂŒr eine sichere sowie solche fĂŒr eine gefĂ€hrliche Trokarposition (dangerous zones) aufgezeigt.Injuries to vessels of the abdominal wall are an potential complication in laparoscopic surgery but, with the increasing use of this technique, tend to occur more often. The exact knowledge of the anatomy of the parietal structures of the abdominal wall remains the main prerequisite in avoiding these complications. In this study, the course of these vessels was dissected in 28 abdominal walls taken from human cadavers, and regions for relatively safe trocar positions and ‘dangerous zones’ were determined

    Sternalis muscle: an underestimated anterior chest wall anatomical variant

    Get PDF
    Over the recent years, an increased alertness for thorough knowledge of anatomical variants with clinical significance has been recorded in order to minimize the risks of surgical complications. We report a rare case of bilateral strap-like sternalis muscle of the anterior chest wall in a female cadaver. Its presence may evoke alterations in the electrocardiogram or confuse a routine mammography. The incidental finding of a sternalis muscle in mammography, CT, and MRI studies must be documented in a patient's medical records as it can be used as a pedicle flap or flap microvascular anastomosis during reconstructive surgery of the anterior chest wall, head and neck, and breast. Moreover, its presence may be misdiagnosed as a wide range of benign and malignant anterior chest wall lesions and tumors

    Albumin and multiple sclerosis

    Get PDF
    A grant from the One-University Open Access Fund at the University of Kansas was used to defray the author's publication fees in this Open Access journal. The Open Access Fund, administered by librarians from the KU, KU Law, and KUMC libraries, is made possible by contributions from the offices of KU Provost, KU Vice Chancellor for Research & Graduate Studies, and KUMC Vice Chancellor for Research. For more information about the Open Access Fund, please see http://library.kumc.edu/authors-fund.xml.Leakage of the blood–brain barrier (BBB) is a common pathological feature in multiple sclerosis (MS). Following a breach of the BBB, albumin, the most abundant protein in plasma, gains access to CNS tissue where it is exposed to an inflammatory milieu and tissue damage, e.g., demyelination. Once in the CNS, albumin can participate in protective mechanisms. For example, due to its high concentration and molecular properties, albumin becomes a target for oxidation and nitration reactions. Furthermore, albumin binds metals and heme thereby limiting their ability to produce reactive oxygen and reactive nitrogen species. Albumin also has the potential to worsen disease. Similar to pathogenic processes that occur during epilepsy, extravasated albumin could induce the expression of proinflammatory cytokines and affect the ability of astrocytes to maintain potassium homeostasis thereby possibly making neurons more vulnerable to glutamate exicitotoxicity, which is thought to be a pathogenic mechanism in MS. The albumin quotient, albumin in cerebrospinal fluid (CSF)/albumin in serum, is used as a measure of blood-CSF barrier dysfunction in MS, but it may be inaccurate since albumin levels in the CSF can be influenced by multiple factors including: 1) albumin becomes proteolytically cleaved during disease, 2) extravasated albumin is taken up by macrophages, microglia, and astrocytes, and 3) the location of BBB damage affects the entry of extravasated albumin into ventricular CSF. A discussion of the roles that albumin performs during MS is put forth
    • 

    corecore