نتایج جستجو برای: glass capillary micropipette

تعداد نتایج: 110213  

Journal: :Circulation research 1964
M LAVALLEE

• Caldwell* was the first to measure directly the pH of large cells (crab muscle fibres) with a glass electrode. Kostyuk and Sorokina reduced considerably the dimensions of the glass electrode and measured directly the intracellular pH of sartorius muscle (frog). Finally, Carter first measured the intracellular pH of a mammalian cell (rat voluntary muscle) by means of a double-barreled microele...

2011
ISAAC LEVIN MICHAEL LEVINE

The insertion into an animal tumor of buried capillary glass tubes containing radium emanation presents a comparatively new departure in radium therapy and is undoubtedly destined to play a prominent part in the future development of the whole field of radiotherapeutics. The technique employed on animals and human beings is as follows: Radium emanation, the first active product of decomposition...

2017
J.A. Jaffey K. J. Williams I. Masseau M. Krueger C. Reinero

BACKGROUND Pulmonary capillary hemangiomatosis is a rare, vascular obstructive disorder that uniformly causes pulmonary arterial hypertension. Clinically, pulmonary capillary hemangiomatosis is indistinguishable from primary pulmonary arterial hypertension and histology is required for definitive diagnosis. The distinctive histologic feature of pulmonary capillary hemangiomatosis is non-maligna...

Journal: :General physiology and biophysics 2003
Z H Zawada B Bilińska

A model of creation a streaming potential U as a result of colloidal particle movement in flow in a capillary has been described previously (Zawada 1996) as well as the systems for measurement (Zawada 1990, 1991). The filling of capillary with a solution of liposomes results in a labile adsorbance of liposomes on a capillary glass and changes the measured streaming potential. In order to minima...

Journal: :The Journal of General Physiology 1968
Mortimer M. Civan Howard S. Frazier

Vasopressin increases the net transport of sodium across the isolated urinary bladder of the toad by increasing the mobility of sodium ion within the tissue. This change is reflected in a decreased DC resistance of the bladder; identification of the permeability barrier which is affected localizes the site of action of vasopressin on sodium transport. Cells of the epithelial layer were impaled ...

Journal: :The Journal of General Physiology 1962
Howard S. Frazier

The electrical potential profile of the isolated toad bladder was examined in the spontaneously active, chronically short-circuited, and intermittently short-circuited states by means of glass micropipettes. The position of the micropipette tip within the bladder was evaluated by measuring the D.C. resistance between the micropipette tip and the reference electrode on the serosal side of the bl...

Journal: :Journal of Bacteriology 1923

2015
Simone Rupp Andreas Off Hendrik Seitz-Moskaliuk Timothy M. James Helmut H. Telle

Raman spectroscopy for low-pressure or trace gas analysis is rather challenging, in particular in process control applications requiring trace detection and real-time response; in general, enhancement techniques are required. One possible enhancement approach which enjoys increasing popularity makes use of an internally-reflective capillary as the gas cell. However, in the majority of cases, su...

Journal: :Journal of medical entomology 2002
Anne H Broadwater Daniel E Sonenshine Wayne L Hynes Shane Ceraul Silva Aravinda M De

We evaluated an artificial capillary feeding method to infect nymphal Ixodes scapularis (Say) ticks with Borrelia burgdoeferi, the causative agent of Lyme disease. Thirty to 70% of the nymphs were infected after feeding for 2.5 h from glass capillary tubes filled with a solution of spirochetes. Capillary infection was stable and persisted in the nymphs for at least 10 d after feeding. Capillary...

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