(1) Writing in 1922, however, the Eclectic physician Harvey Wickes Felter admitted there was "no satisfactory explanation" of how it worked.
Filter
Definition:
(n.) Any porous substance, as cloth, paper, sand, or charcoal, through which water or other liquid may passed to cleanse it from the solid or impure matter held in suspension; a chamber or device containing such substance; a strainer; also, a similar device for purifying air.
(n.) To purify or defecate, as water or other liquid, by causing it to pass through a filter.
(v. i.) To pass through a filter; to percolate.
(n.) Same as Philter.
Example Sentences:
(1) The adaptive filter processor was tested for retrospective identification of artifacts in 20 male volunteers who performed the following specific movements between epochs of quiet, supine breathing: raising arms and legs (slowly, quickly, once, and several times), sitting up, breathing deeply and rapidly, and rolling from a supine to a lateral decubitus position.
(2) With this system, a brain region loaded with fura-2 was illuminated by a rotating disc bearing three different interference filters of 340, 360 and 380 nm at a rate of 600 rpm.
(3) The image was altered in the expected way, which means that the device is suitable for investigating the possibilities of different filters to improve the diagnostic ability.
(4) The flow properties of white cells were tested after myocardial infarction, by measuring the filtration rates of cell suspensions through 8 microns pore filters.
(5) A technique, using Nuclepore polycarbonate membrane filters as a containing medium for very small volumes of ionic standard solutions, to produce homogeneous ice standards is described.
(6) The method is implemented with a digital non-causal (zero-phase shift) filter, based on the convolution with a finite impulse response, to make the computation time compatible with the use of low-cost microcomputers.
(7) Of great influence on the results of measurements are preparation and registration (warm-up-time, amplification, closeness of pressure-system, unhurt catheters), factors relating to equipment and methods (air-bubbles in pressure-system, damping by filters, continuous infusion of the micro-catheter, level of zero-pressure), factors which occur during intravital measurement (pressure-drop along the arteria pulmonalis, influence of normal breathing, great intrapleural pressure changes, pressure damping in the catheter by thrombosis and external disturbances) and last not least positive and negative acceleration forces, which influence the diastolic and systolic pulmonary artery pressure.
(8) For obstruction of greater than or equal to 50% of the pulmonary vascular cross-sectional area and pulmonary hypertension thrombolytic therapy should be given and insertion of an inferior caval filter can be considered.
(9) Erythrocyte filterability, blood viscosity, changes in the blood picture, and three blood coagulation factors (antithrombin III, protein C, and fibrin monomers) were investigated.
(10) Incubation of the blocked filters with radiolabeled DNA under optimal binding conditions and subsequent autoradiography reveals high-affinity DNA-protein interactions.
(11) Binding of uPA to filters was blocked by a synthetic oligopeptide containing the known receptor binding region of native uPA.
(12) Results of this sort are reminiscent of several related findings that have been attributed to auditory adaptation or enhancement, or to a temporally developing critical-band filter.
(13) A facility for keeping chickens free of Marek's disease (MD) was obtained by adopting a system of filtered air under positive pressure (FAPP) for ventilation, and by imposing restrictions on entrance of articles, materials and personnel.
(14) The survival and the interactions of selected, hygienically relevant bacterial species in activated carbon filters was investigated.
(15) Decreases in the level of triglycerides and prebetalipoproteins were noted after filtering but the differences were not significant.
(16) The electron spectroscopic diffraction (ESD) mode of operation of an energy-filtering electron microscope offers the possibility of being able to avoid the background from inelastic scattering in selected-area electron diffraction patterns.
(17) In an effort to decrease the treatment time for this technique, the flattening filter has been removed from an AECL Therac-6 linear accelerator and the characteristics of the resulting beam have been measured.
(18) Microbiological investigations made by membrane filtration method on antiseptics and disinfectants demonstrated that the filtering membranes present very frequently a remarkable antimicrobial activity, even after washing with 300 ml of peptone water according to the guidelines of the Pharmacopoeia.
(19) According to the duration of filtered QRS (fQRS), to the voltage of root mean square of the terminal 40 ms (RMS 40) and to the duration of low amplitude terminal components of the sinus cycles, ventricular late potentials were detected in nine out of 29 subjects.
(20) Insertion of IVC filters by percutaneous approach was successfully performed in 6 patients with recurrent pulmonary embolism.