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  • 1
    Electronic Resource
    Electronic Resource
    Thermal degradation of a thermolabile Serratia marcescens nuclease using capillary electrophoresis with stacking conditions (1992)
    s.l. : American Chemical Society
    Analytical chemistry 64 (1992), S. 187-191 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac00026a018
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Exercise-induced rib stress fractures: influence of reduced bone mineral density (2005)
    Oxford, UK : Munksgaard International Publishers
    Scandinavian journal of medicine & science in sports 15 (2005), S. 0 
    Details
    ISSN: 1600-0838
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Sports Science
    Notes: Exercise-induced rib stress fractures have been reported frequently in elite rowers during the past decade. The etiology of rib stress fractures is unclear, but low bone mineral density (BMD) has been suggested to be a potential risk factor for stress fractures in weight-bearing bones. The present study investigated BMD in seven Danish national team rowers with previous rib stress fracture (RSF) and 7 controls (C) matched for gender, age, height, weight and training experience. Total body scan and specific scans of the lumbar spine (L2–L4), femoral neck and distal radius were performed using a DEXA scanner. The RSF subjects showed significantly lower L2–L4 BMD: RSF: 1.22±0.05 g cm−2 (mean±SEM) (median 1.19 g cm−2, range 1.02–1.37 g cm−2) compared to C: 140±0.04 g cm−2 (median 1.41 g cm−2, range 1.27–1.57 g cm−2) (P=0.028).The present results suggest that low bone mineral density may be a potential risk factor for the development of exercise-induced rib stress fractures in elite rowers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0838.2004.00400.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Using capillary electrophoresis in the optimization of a carboxypeptidase Y catalyzed transpeptidation reaction (1993)
    Weinheim : Wiley-Blackwell
    Electrophoresis 14 (1993), S. 486-491 
    Details
    ISSN: 0173-0835
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: A peptide amide, R-Arg-NH2, was produced by carboxypeptidase Y (CPDY)-catalyzed transpeptidation of a peptide, R-Ala-OH in presence of a large excess of Arg-NH2. Baseline separation of R-Ala-OH and R-Arg-NH2 was achieved by free solution capillary electrophoresis (CE) analysis. With CE the reactions could be closely followed with an analysis frequency of 3-6 h-1. Due to a low consumption of sample per CE analysis (1-5 nL introduced, 5-6 μL in the sample vial), the reactions were performed in 100 and 250 μL volumes. Consequently, the optimization experiments consumed limited amounts of enzyme and substrate only. At optimized experimental conditions approximately 90% conversion of the starting peptide, R-Ala-OH, to R-Arg-NH2 was achieved.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elps.1150140175
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  • 4
    Electronic Resource
    Electronic Resource
    Effective ion-pairing for the separation of basic proteins in capillary electrophoresis (1995)
    Weinheim : Wiley-Blackwell
    Electrophoresis 16 (1995), S. 1917-1921 
    Details
    ISSN: 0173-0835
    Keywords: Capillary electrophoresis ; Proteins ; Ion-pairing ; Phytic acid ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: The addition of the sodium salt of phytic acid to the separation buffer (pH's 6.0-9.5) has allowed the analysis of a number of basic proteins (pIs 〉 9) by capillary electrophoresis. The method of analysis is simple and leads to considerable improvement in peak shape. Some very basic proteins, totally adsorbed onto the capillary fused silica surfaces in the presence of buffer only, can be analysed as sharp signals when this polyanionic species is included in the running electrolyte. These improvements in analysis are thought to arise as a result of the suppression of coulombic interactions between these positively charged proteins (ion-paired to phytic acid) and the negatively charged silanol groups on the inner wall of the capillary.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elps.11501601316
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  • 5
    Electronic Resource
    Electronic Resource
    Differences in absorbance levels as found in capillary zone electrophoresis under stacking conditions (1990)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 13 (1990), S. 639-642 
    Details
    ISSN: 0935-6304
    Keywords: Capillary zone electrophoresis ; “Isotachophoretic effect” ; Sample stacking ; Absorbance jumps ; pH gradient ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: During some capillary zone electrophoresis (CZE) experiments, the baseline UV absorbance signal at 200 nm “jumped” from one stable level prior to the water plug (marking the flow of neutrals) to another stable level after the water plug. The phenomenon was further examined with distilled water as the sample and with different buffers, applied potentials, and salt concentrations in the buffer. It seems that there is an “isotachophoretic effect” on top of the CZE separations when running under stacking conditions. The effect results in a higher pH value of the buffer after the water plug compared to the pH prior to the plug. The nature of the buffer, the salt concentration in the buffer, and the applied potential all affect this phenomenon.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240130911
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    Paper (German National Licenses)
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