Due to the compact geometry of the tracking sub-detectors and calorimeters of the L3 experiment, a large amount of heat (about
28
kW
) is dissipated in a small volume and partly in hardly reachable ...locations. This heat, if not removed, would result in malfunctioning of these sub-detectors and even in their components damaging. Heat transfer to near irrigating cooling fluid (water, silicon oil) proved to be an efficient way to reach the required temperature stability and uniformity during long periods of data acquisition. Safe working conditions were obtained thanks to a newly developed leakless system. In this paper, we describe the studies and tests performed to achieve these goals.
The radiator gas and the gas system of COMPASS RICH-1 Albrecht, E.; Baum, G.; Bellunato, T. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
04/2003, Letnik:
502, Številka:
1
Journal Article
Recenzirano
Odprti dostop
The design of the COMPASS RICH-1 gas system, its operational modes, the cleaning setups for the preparation of the radiator gas and transmission measurement installations are described. The gas ...system in presently fully operational and satisfactory transmission of VUV light through the radiator gas has been reached.
Gases and liquids in RICH detectors Bosteels, M
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
03/1996, Letnik:
371, Številka:
1
Journal Article
Recenzirano
Various fluids are used in RICH detectors. The paper presents some aspects of cleaning and distribution systems for gases and liquids together with the basic principle and application of the Leakless ...Cooling System (LCS).
COMPASS RICH-1 Albrecht, E; Baum, G; Birsa, R ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
02/2002, Letnik:
478, Številka:
1
Journal Article
Recenzirano
Odprti dostop
RICH-1 is one of the key detectors of the COMPASS experiment at CERN. It is a large acceptance gaseous RICH, designed to perform
π/
κ separation up to 60
GeV/
c. All RICH-1 components are built, most ...of them have been commissioned during year 2000 COMPASS technical run and the detector will be completed during Spring 2001. We give a description of the detector and report about various technological achievements required by this challenging project.
To show a new technique of hysterotomy via laparoscopy for a failed termination of pregnancy as an alternative for a hysterotomy via laparotomy.
Step-by-step explanation of the technique using parts ...of the original video of the procedure (Canadian Task Force classification III).
A 39-year-old woman, para 1 gravida 2, was diagnosed with a trisomy 21 pregnancy at 18 weeks' gestation. After 7 days of failed medical and mechanical induction, including misoprostol per vaginam, intravenous sulprostone , intravenous oxytocin, a transcervical Foley catheter, and a transcervical Bakri balloon (Cooke Medical, Bloomington, IN), the decision was made to perform a laparoscopic hysterotomy.
A laparoscopic hysterotomy was performed with extraction of the fetus and placenta in an endobag. The uterus was sutured using a double layer of 2 continuous Vicryl 1 sutures (Ethicon, Cincinnati, OH). The umbilical incision was enlarged to 2.5 cm to extract the endobags. The procedure was performed using only standard reusable laparoscopic equipment.
The patient's postoperative recovery was uneventful. On the postoperative ultrasound, we suspected that a small piece of placental tissue had been left in the uterine cavity. A hysteroscopy confirmed this and showed a normal uterine cavity. The small placental fragment regressed spontaneously on the follow-up ultrasounds. A 2-year follow-up of the patient has shown no minor or major complications. The patient has used contraception since the procedure because she has no further desire for childbearing.
This new technique can help surgeons avoid a laparotomy when a hysterotomy for a failed midtrimester termination of pregnancy is required. The risk of uterine rupture in a next pregnancy needs to be taken into account. This frugally innovative technique may potentially be performed in a low-resource setting because only standard reusable laparoscopic equipment was used.
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