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  • 1995-1999  (5)
  • 1996  (5)
  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 3 (1996), S. 4197-4206 
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A high-power microwave Free Electron Laser (FEL) experiment has been performed to study the inherent electron beam bunching that occurs in the FEL interaction. An induction linac delivered a 1 kA, 2.2 MeV electron beam to a FEL amplifier. In the process of amplifying the input signal of frequency 35 GHz to power levels of the order of 10 MW, the electron beam was bunched by the ponderomotive force. In this paper we describe the FEL experiment and the optical technique that was used to observe the bunches. Their properties as functions of the basic FEL parameters are discussed. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Diseases of the colon & rectum 39 (1996), S. 1227-1231 
    ISSN: 1530-0358
    Keywords: Colonic surgery ; Colostomy ; Morbidity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Purpose: The trend toward avoidance of a colostomy at both elective and emergency large-bowel surgery is partly driven by the perceived morbidity and low closure rates of temporary stomas. The aim of this study was to examine whether significant colostomy-related morbidity remains persistently high. METHODS: To examine this, we reviewed 120 patients with a potentially reversible colostomy performed during either elective or emergency large-bowel surgery during a seven-year period. RESULTS Forty-seven patients underwent elective and 73 patients underwent emergency colonic or colorectal resection. Fifty-eight patients had colorectal carcinoma (48.3 percent), diverticular disease accounted for 39 patients (32.5 percent), and a miscellaneous group of 23 patients (19.2 percent) made-up the remainder. Seven patients died, all in the emergency group (9.6 percent). Colostomy-related morbidity, which included stenosis, retraction, prolapse, and hernia formation, occurred in 19.2 percent of patients, with no difference between the elective (14.9 percent) and emergency (21.9 percent) groups or underlying pathologic condition. Colostomy closure was performed initially in 71 patients (59.2 percent). Highest closure rates occurred in the diverticular group (84.6 percent), followed by the colorectal carcinoma group (48.3 percent), and then the miscellaneous group (43.5 percent). One patient died undergoing colostomy closure, and complications occurred in 25 patients (35.2 percent), requiring fashioning of a second colostomy in eight patients, two of whom were closed. Final colostomy closure rate was 54.2 percent. CONCLUSIONS: This study confirms the contention that both formation and closure of defunctioning colostomies are associated with significant complications; furthermore, approximately one-half of patients will not have their colostomy closed.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1433-8726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This article deals with observations of the clinical behavior of metastatic germ cell cancers of testicular origin. Therefore, when we speak of biology of metastases, we refer to that seen by the clinician as opposed to the laboratory scientist. First, we will review our experience with chemotherapy for metastatic disease. From this we can gain insight into risk factors for relapse and survival. Furthermore, we can infer there are fundamental differences in the biology of germ cell cancers of testicular origin as opposed to primary mediastinal or primary retroperitoneal origin. Some of these differences are further discussed. We also identify “good risk” parameters and suggest criteria for expectant or conservative management postchemotherapy instead of postchemotherapy surgical management. Second, the diversity of metastases as evidenced by a wide histologic spectrum, is discussed in clinical terms. Among topics discussed are non-germ-cell malignant elements found within metastatic germ cell tumors, and possible mechanisms for their emergence. Third, the increasing awareness of long delayed, late relapse and its relative refractoriness to chemotherapy gives further insight into the clinical biology of metastatic germ cell cancer. The multipotential nature of the germ cell results in a wide variety of metastatic subtypes, each with its own clinical behavior. Therefore, a variety of clinical management strategies may be required based upon these different clinical behaviors.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 10 (1996), S. 848-849 
    ISSN: 1432-2218
    Keywords: Key words: Herpes zoster — Biliary colic — Murphy's sign
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. Herpes zoster must be included in the differential diagnosis of acute right upper quadrant pain. The presence of a dermatomal vesicular rash should be considered a contraindication to surgical intervention.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 10 (1996), S. 848-849 
    ISSN: 1432-2218
    Keywords: Herpes zoster ; Biliary colic ; Murphy's sign
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Herpes zoster must be included in the differential diagnosis of acute right upper quadrant pain. The presence of a dermatomal vesicular rash should be considered a contraindication to surgical intervention.
    Type of Medium: Electronic Resource
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