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  • 1990-1994  (4)
  • 1980-1984  (3)
  • Diabetes mellitus  (2)
  • Suberin  (2)
  • 25.90  (1)
  • 42.60Da  (1)
  • Borrelia burgdorferi
Source
Material
Years
  • 1990-1994  (4)
  • 1980-1984  (3)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    High power continuous-wave diode-laser-pumped Nd:YAG laser (1994)
    Springer
    Applied physics 58 (1994), S. 389-392 
    Details
    ISSN: 1432-0649
    Keywords: 42.55.Rz ; 42.60By ; 42.60Da
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on a diode-laser-pumped cw Nd: YAG laser operating at a power level of 150 W. By using a transverse pump geometry, the radiation of 54 diode lasers with an output power of 10 W each is coupled into a Nd:YAG rod. In multimode operation, an optical slope efficiency of 32% and an optical to optical efficiency of 29% are obtained. In TEM00 operation, an output power of more than 30 W is realized with an optical to optical efficiency of 10%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081878
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Ultrastruktur der diabetischen autonomen Neuropathie des Gastrointestinaltraktes (1984)
    Springer
    Journal of molecular medicine 62 (1984), S. 399-405 
    Details
    ISSN: 1432-1440
    Keywords: Electronmicroscopy ; Diabetes mellitus ; Autonomic polyneuropathy ; Gut
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Gastrointestinal motility disorders induced by diabetes mellitus are most commonly manifested in the colon, and are considered to be an expression of diabetic autonomic polyneuropathy. In this study, for the first time, the intrinsic nervous system of the bowel has been subjected to an ultrastructural and morphometric examination in rectal biopsy material obtained from diabetics with and without diabetic enteropathy. In patients with diabetic enteropathy, the nerves of the submucous plexus (Meissner's plexus) revealed significant swelling of the axons, as an expression of neural degeneration. Furthermore, in about a half of these patients, thickening of the basal membrane of Schwann's cells was also detected. Additional, although unspecific, changes found in the diabetics were a quantitative increase in the lysosomes, lipofuscin and glycogen in the Schwann cells. The ultrastructural findings represent evidence for the presence of an intrinsic autonomic polyneuropathy in diabetics with diabetic enteropathy. At the same time, they indicate that the diagnosis of diabetic enteropathy is no longer merely an “exclusion” diagnosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01742296
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Fine structure of isolated and non-isolated potato tuber periderm (1982)
    Springer
    Planta 154 (1982), S. 76-80 
    Details
    ISSN: 1432-2048
    Keywords: Cell wall (potato) ; Periderm ; Solanum (periderm) ; Suberin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Cell walls of the periderm of native potato tuber (Solanum tuberosum L. cv. Primura) consist of a primary wall, a suberized secondary wall and a tertiary wall. With a mixture of pectinase and cellulase intact periderm membranes can be isolated. Isolation does not affect fine structure. It is suggested that the lignin in the middle lamellae and primary walls prevents the enzymes from digesting pectinaceous materials and cellulose. In specimens fixed with OsO4, the suberized walls appear as alternating electrondense and electron-lucent lamellae. This lamellar architecture is not altered by extraction with chloroform. Therefore, the current view that the electronlucent lamellae consist of soluble lipids (waxes) can no longer be maintained. It is argued that the lamellation is a property of the suberin itself, and the suberized wall consists of alternating layers of suberins differing in polarity. A hypothesis of suberin assembly from sub-units is advanced and the subunits are shown for the first time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385500
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  • 4
    Electronic Resource
    Electronic Resource
    Water permeability of periderm membranes isolated enzymatically from potato tubers (Solanum tuberosum L.) (1983)
    Springer
    Planta 158 (1983), S. 294-301 
    Details
    ISSN: 1432-2048
    Keywords: Periderm membranes ; Solanum, periderm ; Suberin ; Tuber ; Water permeability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The fine structure and water permeability of potato tuber periderm have been studied. Periderm membranes (PM) were isolated enzymatically using pectinase and cellulase. They were composed of, about six layers of phellem cells arranged in radial rows. The walls of phellem cells consist of cellulosic primary and tertiary walls and suberized secondary walls which are lamellated. Middle lamellae and primary walls contain lignin. Since the PM did not disintegrate during enzymatic isolation it appears that lignin also extends into the secondary suberized walls. The water permeability of PM was low, ranging from 1–3·10-10 m s-1. This low water permeability developed only during storage of tubers in air. Periderm membranes from freshly harvested tubers had a relatively high permeability. The low permeability of PM from stored tubers is attributed to soluble lipids associated with suberin since: (1) extraction of soluble lipids from PM increased permeability by more than 100-fold, (2) a phase transition of soluble lipids was observed between 46 and 51° C, and (3) only the permeability of PM decreased during storage while the permeability of extracted PM remained unchanged. Evidence is presented that two pathways for water movement exist in parallel. Pathway 1 is represented by middle lamellae and primary walls extending in radial direction across the membranes. This pathway has a relatively high specific permeability. Pathway 2 is represented by a polylaminated structure made up of tangential walls of phellem cells which are orientated normal to the direction of water flow. This pathway has a low specific permeability because of the properties of secondary walls incrusted with soluble lipids. It is calculated that about 10% of the water flows across pathway 1 and 90% across pathway 2 which has a volume fraction of 0.995.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397330
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Detection ofBorrelia burgdorferi by nested polymerase chain reaction in cerebrospinal fluid and urine of children with neuroborreliosis (1993)
    Springer
    European journal of pediatrics 152 (1993), S. 414-417 
    Details
    ISSN: 1432-1076
    Keywords: Neuroborreliosis ; Borrelia burgdorferi ; Polymerase chain reaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Diagnosis of neuroborreliosis is often difficult since history and clinical presentation may be non-specific and serological tests may initially be negative. We therefore tested the polymerase chain reaction (PCR) for the detection of borrelial sequences in CSF and urine samples of consecutive children with neuroborreliosis seen in a single summer season. Four of eight children were negative in serum for antibodies toBorrelia burgdorferi. Two of eight children were PCR-positive in CSF and one other child was positive in urine. In two out of four children PCR was the only laboratory test confirming the clinical diagnosis. All children recovered after treatment with third generation cephalosporins. When seven of eight children were re-examined 6 months later all were healthy and antibodies toB. burgdorferi were detected in their serum. PCR may assist the paediatrician in establishing a diagnosis of neuroborreliosis; however, a negative result does not rule out neuroborreliosis. PCR is an adjunct, but no substitute for clinical judgement and serology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01955900
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Development of height and weight in children with diabetes mellitus: Report on two prospective multicentre studies, one cross-sectional, one longitudinal (1992)
    Springer
    European journal of pediatrics 151 (1992), S. 258-262 
    Details
    ISSN: 1432-1076
    Keywords: Diabetes mellitus ; Growth ; Height ; Weight ; Metabolic control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Optimal regimen for insulin therapy should lead to normal longitudinal growth and weight gain in children with diabetes mellitus. However, reports published so far indicate that this goal of paediatric diabetology is currently not achieved in a considerable number of patients. In a cross-sectional sample of 89 children with insulin dependent diabetes mellitus (IDDM) for more than 3 years, we found the relation of height to weight to be significantly different compared to 102 healthy school children of similar age. Using bivariate analysis, body shape in these children with diabetes was shifted towards small and obese (P〈0.05) compared to control children. We subsequently initiated a longitudinal study and followed children from the onset of diabetes for the following 3 years, recording height, weight and bone age as well as glycosylated haemoglobin and daily insulin requirement. At diagnosis, height SDS was identical in children with IDDM (+0.04±0.10) compared to control children (−0.07±0.10; M±SE), while weight SDS was −0.26±0.10 in children with diabetes (controls: +0.01±0.1). Bone age was identically retarded in newly diagnosed IDDM children (−0.73±0.12 SDS) and in our control group of children from the same regional background (−0.50±0.12; n.s.). In this group of children with diabetes mellitus followed prospectively, height to weight relationship differed from controls after 2 and after 3 years of the disease (P〈0.05). At 2 years, body size in children with diabetes was shifted towards taller and heavier compared to controls, while at 3 years, the relation of height to weight was even more abnormal with increased obesity but a reduction of standardized height. This is the same relation encountered in the cross-sectional sample of children with a duration of diabetes beyond 3 years. These data demonstrate that even modern insulin therapy does not guarantee normal development of height and weight in children with IDDM.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02072224
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Comparison of residual nuclei from relativistic ion and antiproton reactions with nuclei (1991)
    Springer
    The European physical journal 341 (1991), S. 79-82 
    Details
    ISSN: 1434-601X
    Keywords: 25.90
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The distribution of residual nuclei after stopped antiproton annihilation in several targets from Cu to Ho has been compared with a recent empirical parametrization of mass and charge yields which is supposed to be valid for relativistic light and heavy ion induced reactions. The basic structure of the proposed formula is also applicable for antiproton induced fragmentation or spallation, but some specific modifications are suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01281276
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    Paper (German National Licenses)
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