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  • 1995-1999  (1)
  • 1985-1989  (3)
  • 07.35.+k  (1)
  • 32.80.Fb  (1)
  • K+ channels  (1)
  • Key words: Laparoscopic cholecystectomy — Intraoperative ultrasonography — Miniature probe — Cystic duct — Bile duct injury  (1)
Datenquelle
Materialart
Erscheinungszeitraum
  • 1995-1999  (1)
  • 1985-1989  (3)
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Laser isotope separation of titanium by two-step photoionization (1987)
    Springer
    Applied physics 44 (1987), S. 163-166 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 32.80.Fb
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Titanium isotopes were selectively excited and photoionized using a two-step photoionization method, and the isotope separation was demonstrated, in which a separation factor of around 15 for50Ti was obtained. Spectroscopic parameters such as isotope shifts, photo-ionization cross section and excited state lifetimes were also measured. Isotope shifts up to 0.92 GHz were obtained for the transitions between 0 and 19938 cm−1 or between 170 and 20006 cm−1 among five isotopes. The cross section is 7.4×10−17 cm2 for the photo-ionization. The excited state lifetimes are 330±20 ns for 19938 cm−1, 260±15 ns for 20006 cm−1 and 250±15 ns for 20126 cm−1.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00692318
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  • 2
    Digitale Medien
    Digitale Medien
    Tunable picosecond pulses from a short-cavity dye laser under ultra-high pressure using diamond-anvil cell (1985)
    Springer
    Applied physics 38 (1985), S. 159-163 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 42.55.Mv ; 06.60.Jn ; 07.35.+k
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract It is demonstrated that broadly tunable picosecond pulses are generated from a dye laser of very short cavity utilizing a diamond-anvil cell, which operates at pressures up to 10 GPa. The pulses as short as 5 ps are obtained from the rhodamine 6G dye laser pumped by a frequency-doubled Q-switched Nd: YAG laser. The way of tuning is based on the pressure induced shift of the emission peak of the dye. The laser is tunable over 20 nm by changing the pressure of the cell within 4 GPa.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697478
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  • 3
    Digitale Medien
    Digitale Medien
    Ensemble noise and current relaxation analysis of K+ current in single isolated salivary acinar cells from rat (1986)
    Springer
    Pflügers Archiv 406 (1986), S. 69-72 
    Details
    ISSN: 1432-2013
    Schlagwort(e): K+ channels ; Acinar cells ; Ensemble noise analysis ; Current relaxation ; Patch-clamp whole cell recording
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract The K+ channel in rat parotid gland acinar cells were investigated by ensemble current noise analysis in single isolated cells employing the giga-seal whole cell current recording mode. Sets of 20–40 identical de- and hyperpolarization voltage steps were applied and the resultant current records were processed by computer to obtain the mean and the variance of the current. The time-course of the mean current could be fitted by the sum of two exponentials, suggesting a 3-state model. The simplest plausible hypothesis is a model with one open and two closed states. Assuming this model, the relationship between the variance (σ2) and the mean current (I) could be fitted by the function σ2/I=i−I/N. The estimated single channeli/V-relations were similar to those taken from single channel current recordings, and the size of the population of channels per cell (N) was 76±26 (n=12). The validity of the model was tested by a successful simulation of the time-course of the variance.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00582956
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  • 4
    Digitale Medien
    Digitale Medien
    A miniature probe enables clear demonstration of the cystic duct during laparoscopic cholecystectomy (1998)
    Springer
    Surgical endoscopy and other interventional techniques 12 (1998), S. 1186-1188 
    Details
    ISSN: 1432-2218
    Schlagwort(e): Key words: Laparoscopic cholecystectomy — Intraoperative ultrasonography — Miniature probe — Cystic duct — Bile duct injury
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract. We performed intraoperative ultrasonography with a miniature probe to explore the biliary anatomy, especially the cystic duct, during laparoscopic cholecystectomy. By using this radial-type probe introduced into a hard metal sheath with a balloon at the end, the plane containing Calot's triangle can be scanned easily when the gallbladder is extracted to the right side, thereby facilitating the identification of the cystic duct as well as the common ducts. In 30 cases, no common duct stone was found and the cystic duct was clearly identified. This radial-type miniature probe can be used to locate the cystic duct and avoid inadvertant incision or division of the common ducts.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s004649900814
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