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  • 1
    Electronic Resource
    Electronic Resource
    Microbial decolorization of azo dyes by Proteus mirabilis (1999)
    Springer
    Journal of industrial microbiology and biotechnology 23 (1999), S. 686-690 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: azo dyes; biodegradation; biosorption; enzymatic reduction; Proteus mirabilis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A bacterium identified as Proteus mirabilis was isolated from acclimated sludge from a dyeing wastewater treatment plant. This strain rapidly decolorized a deep red azo dye solution (RED RBN). Features of the decolorizing process related to biodegradation and biosorption were also studied. Although P. mirabilis displayed good growth in shake culture, color removal was best in anoxic static cultures. For color removal, the optimal pH and temperature were 6.5–7.5 and 30–35°C, respectively. The organism exhibited a remarkable color removal capability, even at a high concentration of azo dye. More than 95% of azo dye was reduced within 20 h at a dye concentration of 1.0 g L−1. Decolorization appears to proceed primarily by enzymatic reduction associated with a minor portion, 13–17%, of biosorption to inactivated microbial cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.2900689
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  • 2
    Electronic Resource
    Electronic Resource
    Study of Brønsted acidity of NaHY zeolite by positron spectroscopy (1996)
    Springer
    Catalysis letters 40 (1996), S. 31-34 
    Details
    ISSN: 1572-879X
    Keywords: acidity ; positron annihilation ; zeolite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Angular correlations of positron annihilation gammas were applied to study NaHY zeolite catalysts whose acidity was altered by an ion-exchange process. The Brønsted acidity was found to vary linearly with the lineshape parameter of the angular correlation spectrum of the sample.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00807452
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  • 3
    Electronic Resource
    Electronic Resource
    A simple, sensitive, non-stimulated photon counting system for detection of superoxide anion in whole blood (1996)
    Springer
    Cellular and molecular life sciences 52 (1996), S. 141-144 
    Details
    ISSN: 1420-9071
    Keywords: Superoxide ; free radical ; reactive oxygen species ; chemiluminescence ; pancreatitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A simple, sensitive, non-stimulated assay was developed to measure the superoxide anion concentration in whole blood, using an ultra-sensitive chemiluminescence (CL) analyzer, and lucignin amplification. The assay system can be performed without leukocyte isolation or stimulant administration. The blood CL levels of healthy males (362.8±337.7 counts/10 sec) were not different from those of females (335±308.7 counts/10 sec) (p=0.64), whereas the CL levels in whole blood in patients with acute pancreatitis (2522±2014 counts/10 sec) were significantly higher than those of healthy controls (p〈0.001). This assay system may be valuable in the future for quantitative measurement of reactive oxygen species in various disorders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01923359
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  • 4
    Electronic Resource
    Electronic Resource
    Surface acidity by positron annihilation lineshapes (1994)
    Springer
    Catalysis letters 26 (1994), S. 269-275 
    Details
    ISSN: 1572-879X
    Keywords: acidity ; catalysts ; positron annihilation spectroscopy ; zeolite ZSM-5
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract An alternative new method to measure the specific acidity of catalytic materials with large internal surface areas by using positron annihilation spectroscopy was introduced. Results of lineshape parameter evaluations from two-dimensional angular correlation and Doppler broadened annihilation radiation measurements for a zeolite ZSM-5 were presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810599
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  • 5
    Electronic Resource
    Electronic Resource
    Cu-like Pd and Ag inner-shell photoionization phenomena (1996)
    Springer
    Applied physics 62 (1996), S. 619-622 
    Details
    ISSN: 1432-0649
    Keywords: 52.50.Jm ; 52.25.Nr
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have obtained results for converting focused laser radiation to X-ray line emissions in laser-heated NaF and Cu plasmas. These plasmas were used as the pump source for studying the phenomena of inner-shell photoionization of Zn-like ionic states. Soft X-ray emissions from transitions of 3d 94s 2 → 3d 104p in Cu-like Pd and Ag ions were observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081701
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  • 6
    Electronic Resource
    Electronic Resource
    Reduction of calcium excretion in the stone-forming kidney in unilateral ureteral obstruction (1991)
    Springer
    Urological research 19 (1991), S. 193-198 
    Details
    ISSN: 1434-0879
    Keywords: Urolthiasis ; Obstructive uropathy ; Percutaneous nephrostomy ; Hypercalciuria ; Creatinine clearance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirteen urolithiasis patients with unilateral obstructive uropathy were treated with percutaneous nephrostomy (PCN) either for urinary diversion, endopyelotomy, nephrolithtotmy or chemolysis. After percutaneous nephrostomy, the indvidual urine volume, creatinine clearance (Ccr), urinary absolute and fractional excretions of sodium, potassium, calcium, magnesium and inorganic phosphate were measured separately in timed urine collections from a pigtail catheter and from the urethra. The data showed that Ccr and the absolute urinary excretions of sodium, potassium, calcium, magnesium and inorganic phosphate were significantly lower in the PCN kidney immediately or 2 days after relief of obstruction. The ratio of total urinary calcium excretion to urinary creatinine excretion in the obstructed kidney was significantly greater than that in the contralateral kidney. The fractional excretions of calcium and magnesium increased as renal function decreased. The results showed that when the total Ccr is below normal, the apparent excretion of urinary calcium will be underestimated. However, when the total Ccr of patients is within normal range, hypercalciuria may be detected adequately and thus favors early implementation of an appropriate therapeutic strategy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00303749
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  • 7
    Electronic Resource
    Electronic Resource
    Rotational-flow analysis of plane right-angle bends (1967)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 18 (1967), S. 621-642 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Zusammenfassung Nach einem Verfahren, das als “Methode der gefrorenen Wirbel” bezeichnet wird, werden ebene Strömungen durch einen Krümmer berechnet. Der Grundgedanke des Verfahrens besteht darin, die Wirbelstärke näherungsweise als eine Funktion der Stromfunktion allein anzusetzen. Man wird so auf eine Poisson-Gleichung für die Stromfunktion geführt. Die Rechnungen werden durchgeführt für Geschwindigkeitsverteilungen im Eintrittsquerschnitt, die der ausgebildeten laminaren und turbulenten Strömung entsprechen. Am Beispiel der Laminarströmung wird der Einfluss vorgegebener Wirbelverteilungen und Ausflussbedingungen auf die Strömung in den verschiedenen Bereichen des durchströmten Raumes untersucht. Bei den Berechnungen mit Geschwindigkeitsprofilen, die der turbulenten Strömung entsprechen, wurden zudem die Einflüsse der Krümmung und der Art der Zuströmung betrachtet, wobei der Krümmungsradius vom 0,75fachen bis zum 4fachen der Kanalbreite variiert wurde. Das Verhältnis des Mittelwertes der Geschwindigkeit im Eintrittsquerschnitt zur Geschwindigkeit in der Mitte dieses Querschnittes erweist sich dabei als ein hydrodynamisch charakteristischer Parameter, während die Annahmen über die Geschwindigkeitsverteilung am Austritt nur von geringfügigem Einfluss sind. Bei scharfer Krümmung und ungleichmässigen Geschwindigkeitsprofilen tritt Strömungsablösung an der Aussenwand auf. Ablösungserscheinungen an der Innenwand — die praktisch beobachtet werden — liefert diese Theorie nicht, womit die Grenzen ihrer Anwendbarkeit in Erscheinung treten.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01602036
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  • 8
    Electronic Resource
    Electronic Resource
    Parts Feeding on a Conveyor with a One Joint Robot (2000)
    Springer
    Algorithmica 26 (2000), S. 313-344 
    Details
    ISSN: 1432-0541
    Keywords: Key words. Robotics, Manipulation, Mechanics, Planning, Minimalism, Automation, Manufacturing, Parts feeding.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract. This paper explores a method of manipulating a planar rigid part on a conveyor belt using a robot with just one joint. This approach has the potential of offering a simple and flexible method for feeding parts in industrial automation applications. In this paper we develop a model of this system and of a variation which requires no sensing. We have been able to characterize these systems and to prove that they can serve as parts feeding devices for planar polygonal parts. We present the planners for these systems and describe our implementations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004539910016
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  • 9
    Electronic Resource
    Electronic Resource
    The observation and new mechanism of an anomalous superperiod on a HOPG surface (1998)
    Springer
    Applied physics 66 (1998), S. 1129-1131 
    Details
    ISSN: 1432-0630
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/
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  • 10
    Electronic Resource
    Electronic Resource
    A rapid method for detecting bacterial polyhydroxyalkanoates in intact cells by Fourier transform infrared spectroscopy (1999)
    Springer
    Applied microbiology and biotechnology 51 (1999), S. 523-526 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Polyhydroxyalkanoates (PHA) are synthesized by many bacteria as inclusion bodies, and their biodegradability and structural diversity have been studied with a view to their potential application as biodegradable materials. In this paper, Fourier-transform infrared spectroscopy (FT-IR) was used to carry out rapid qualitative analysis of PHA in intact bacterial cells. The FT-IR spectra of pure PHA containing short-chain-length monomers, such as hydroxybutyrate (HB), medium-chain-length hydroxyalkanoate (mclHA) monomers including hydroxyoctanoate (HO) and hydroxydecanoate (HD), or both HB and mclHA monomers, showed their strong characteristic band at 1728 cm−1, 1740 cm−1 or 1732 cm−1 respectively. Other accompanying bands near 1280 cm−1 and 1165 cm−1 helped identify the types of PHA. The intensity of the methylene band near 2925 cm−1 provided additional information for PHA characterization. In comparison, bacterial cells accumulating the above PHA also showed strong marker bands at 1732 cm−1, 1744 cm−1 or 1739 cm−1, corresponding to intracellular PHB, mclPHA and P(HB + mclHA) respectively. The accompanying bands visible in pure PHA were also observable in the intact cells. The FT-IR results were further confirmed by gas chromatography analysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530051427
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