scispace - formally typeset


Tube (fluid conveyance)

About: Tube (fluid conveyance) is a(n) research topic. Over the lifetime, 135345 publication(s) have been published within this topic receiving 663251 citation(s). The topic is also known as: tubing.
More filters

01 Jan 1969
Abstract: Habitats devoid of oxygen include the interior of the alimentary tracts of most mammals, the lower portions of many oligotrophic lakes, the sediment underlying bodies of water, and water logged soils. Water, the continuous phase in all these habitats, is chiefly responsible for the lack of O2. One ml of water equilibrated with air contains only about 8 /il of O2, compared to 210 ?l 02/ml of air. This oxygen is soon used by aerobic microbes if other suitable foods are available. Oxygen is re moved by metabolism as rapidly as it enters anaerobic habitats. Both euryoxic and anaerobic bacteria have evolved in these habitats. In most continuously anaerobic habitats obligate anaerobes are more a bundant than euryoxic types, possibly because the latter bear a burden of aerobic metabolic capacities unused in the anaerobic environment. Usual aerobic petri plates or similar containers are suitable to culture the euryoxic microbes, but most anaerobes fail to grow in the presence of air. The anaerobes can be classed as oxyduric, i.e. surviving exposure to O2 but not growing in its presence, and oxylabile Species, killed by exposure to O2. Many oxyduric anaerobes can be handled in much the same fashion as aerobes, except that after plates are streaked they must be incubated

1,404 citations

18 Feb 1993
Abstract: An electrosurgical tubular trocar system (10) has a hollow tube (13) substantially longer than its diameter. The tube (13) is shaped for insertion in a direction generally along its axis through tissue of a human or animal body. Distal and proximal ends (17 and 18) on the tube (13) enter and remain outside the tissue, respectively. A tip (19) on the distal end (17) punctures tissue of a human or animal. An insulating portion (20) of high dielectric material extends along the tube (13) between the distal and proximal ends (17 and 18). An electrode (14) on the insulating portion (20) extends from the proximal end (18) to the tip (19) to transmit radio frequency energy. A tip point (19) at an acute angle to the axis lessens the initial force necessary for entry of the tube (13). The return path (16) is a conductor (23) on the insulating portion (20) for bipolar cutting across a gap (25). An alternate system may have the return path (16) as a conductive pad (15) in contact with the tissue as a monopolar circuit. The tube (13) may be in fluid communication for flow.

792 citations

05 Feb 2002
Abstract: An endoscope including; a fixing member detachably mounted to a distal end portion of an endoscope insertion part for detachably fixing and holding a distal end portion of an indwelling tube or a distal end portion of a guide member for guiding the indwelling tube, both of which are provided along the axial direction of the insertion part, to the distal end portion of the insertion part.

782 citations

Journal ArticleDOI
Abstract: Measurements of the amount of fluid left behind when a viscous liquid is blown from an open-ended tube are described.

779 citations

08 Nov 2000
Abstract: PROBLEM TO BE SOLVED: To provide an outside tube for an endoscope that can expand the kinds of usable endo-therapy accessories, improve the safety of endoscope technique and expand applied cases. SOLUTION: A tube fixing ring 9 is provided for detachably engaging the tip part of a tube body 8 with the tip part of an insert part 3 of the endoscope 2. The engagement of the tube fixing ring 9 is released by the operation of a grip part 13 on the base end side of the tube body 8.

723 citations

No. of papers in the topic in previous years