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  • 1995-1999  (3)
  • CMOS steering-current techniques  (1)
  • Cultivars  (1)
  • Key words: Laparoscopy — Complications — Open approach  (1)
  • RAPD analysis  (1)
Material
Years
  • 1995-1999  (3)
Year
Keywords
  • 1
    ISSN: 1432-203X
    Keywords: Key words PCR ; RAPD analysis ; Corylus avellana ; Cultivars
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The random amplified polymorphic DNA (RAPD) technique offers a useful tool to detect DNA polymorphisms. It can also be used to distinguish different clones and cultivars. We have developed a comprehensive RAPD-based procedure for the routine molecular typing of various plants. Here we report the application of this technique for the correct identification of six hazelnut cultivars (Corylus avellana) widespread in the Campania region (south Italy). The analysed hazelnut cultivars were successfully distinguished by their RAPD fingerprints using the DNA primers U2, U3, U4, U11 and U14. However, in each cultivar we observed very low genetic heterogeneity among the clonal variants. Since this technique is among the simplest and easiest methods used to fingerprint DNA, it could be easily transferred to less sophisticated laboratory infrastructures (e.g. outstations of crop regulatory agencies).
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 11 (1997), S. 655 -657 
    ISSN: 1432-2218
    Keywords: Key words: Laparoscopy — Complications — Open approach
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Surgical complications of laparoscopy most often occur during Veress needle or primary trocar placement. Veress needle punctures are insignificant and require no further treatment, whereas trocar-induced vascular injuries can be catastrophic. The frequency of vascular and viscus injuries is difficult to calculate because several complications are not reported in the literature. Methods: During a 10-year-period (1984–1995), at the Division of Pediatric Surgery at ``Federico II'' University of Naples, 430 laparoscopic procedures were performed in 395 children with a mean age of 5 years. The incidence of complications related to laparoscopy was 1.8% with eight complications, one of which was rather severe. The complications included one abdominal wall hematoma, two perforations of abdominal viscus (stomach, ovary), one umbilical scar complication, one postoperative hydrocele, one subcutaneous emphysema, and one pneumothorax during a Nissen procedure. The only severe complication occurred in a young girl with neurologic problems and a kyphoscoliosis operated on via laparoscopy for a gastroesophageal reflux. She suffered injuries of both right common iliac vessels and several intestinal perforations due to blind introduction of the first umbilical trocar. Results: In this case rapid conversion, complex vascular reconstruction, and multiple intestinal sutures were performed. The Nissen fundoplication with pyloroplasty was performed traditionally and the patient left the hospital free of symptoms after 20 days. The other seven complications were resolved without any problem intra- or postoperatively. Conclusions: The authors believe that the open approach with a blunt trocar is most important in helping to avoid complications in pediatric laparoscopy.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Analog integrated circuits and signal processing 8 (1995), S. 145-155 
    ISSN: 1573-1979
    Keywords: digital-to-analog conversion ; CMOS steering-current techniques ; multiplying functions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper discusses the design and integrated circuit implementation of two alternative solutions for realizing an 8-bit high-speed steering-current multiplying digital-to-analog converter based on a current-source-array architecture. In the first solution, designated as voltage-controlled-current-source operation, a reference voltage is used to drive directly the gate-to-source voltage of the current-sources while in the second solution, designated as geometry-programmable-current-source operation, the current-sources are generated using a digitally programmable transistor-array. The characteristics of both solutions are discussed from the viewpoints of the accuracy and distortion introduced by the multiplying function. For demonstration purposes a prototype chip suitable for both operating modes has been fabricated in a single-poly 1.2µm CMOS digital technology. At 5 V supply and 13.3 mA full-scale output current, the chip dissipates about 90 mW for a sampling frequency of 50 MHz. The die area is approximately 1.75 mm2.
    Type of Medium: Electronic Resource
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