(n.) A contrivance for forcing feed water into a steam boiler by the direct action of the steam upon the water. The water is driven into the boiler by the impulse of a jet of the steam which becomes condensed as soon as it strikes the stream of cold water it impels; -- also called Giffard's injector, from the inventor.
Example Sentences:
(1) It focuses on the major areas of concern: HIV prevalence among drug injectors; sexual risk behaviour; the potential for heterosexual transmission; condom use; sexual risk and women; pregnancy; male homosexual activity and drug use; the effect of drugs on sexual behaviour and prostitution.
(2) 21 amino acids were determined by a liquid chromatograph, consisting of an automatic controller of the gradient, nonautomatic injector, fluorimetric detector and recording device.
(3) The number of current injectors was estimated to be 9400; the prevalence of HIV infection among 447 injectors recruited to the HIV prevalence study during 1990 was 1.1%.
(4) No differences were found in the typical daily doses prior to entering treatment between chasers and injectors.
(5) Analyses are routinely performed with an automatic injector; overall analysis time is about 1 h per sample.
(6) We examined the effect of two types of automatic injector delivery of two drugs which are components of the standard antidote to anticholinesterase poisoning and which have been previously shown to have a reduced absorption rate when mixed together in a manual injection.
(7) Then the second valve was switched off and the injection line connected to a transducer, allowing measurement of EEP through the injector.
(8) The reaction system consists of two pumps to deliver reagent and carrier stream, sample injector, reaction coil (0.5 mm ID x 15 m, 150 degrees C), cooling coil (0.5 mm ID x 3 m, 30 degrees C), and cooling coil (0.5 mm ID x 20 cm, 0 degrees C).
(9) The Storz bronchoscopes produced consistently higher peak inflation pressures and flow rates at all driving pressures in spite of the relatively large angle of the injector from the axial line.
(10) Samples were injected using an automatic injector via a loop column, and separation was obtained using a reversed-phase column under isocratic conditions.
(11) Therefore, manual injection should be replaced by remotely controled injection by means of an injector.
(12) Initially a modified Carden tube with a ventilating injector was used through a tracheostomy stoma and subsequently an orotracheal tube was substituted.
(13) In an open randomized cross-over study 50 patients with insulin-dependent diabetes were allocated to 3 months of treatment with NPH insulin either by means of a pen injector (Insuject-X) or by conventional syringes.
(14) With an automatic injector and a programmable detector, the system allows unattended operation.
(15) All parameters show that an increased, more reliable, and homogeneous enhancement can be obtained by application of the power injector compared to manual bolus injection technique using the same amount of contrast media (100 cc).
(16) The impact of an outpatient, risk-management system, including a transtelephonic electrocardiographic monitor and lidocaine injector, on the quality of life in post-myocardial infarction patients was examined.
(17) A simple device is described involving suction (by means of an injector run on oxygen) and an oxygen delivery system including an outlet into which the respirator can be plugged direct.
(18) The temperature of the gas chromatographic injector should be at least 325 degrees C. A capillary column of a minimum length of 10 m coated with a methyl silicone is adequate.
(19) The Venturi is a flow-accelerating injector, activated by fresh gas inflow from the anaesthetic machine.
(20) The catheter tip is formed in three dimensions to allow simple selective catheterization and to provide improved stability during injection of contrast media by power injector or by hand.
Needle
Definition:
(n.) A small instrument of steel, sharply pointed at one end, with an eye to receive a thread, -- used in sewing.
(n.) See Magnetic needle, under Magnetic.
(n.) A slender rod or wire used in knitting; a knitting needle; also, a hooked instrument which carries the thread or twine, and by means of which knots or loops are formed in the process of netting, knitting, or crocheting.
(n.) One of the needle-shaped secondary leaves of pine trees. See Pinus.
(n.) Any slender, pointed object, like a needle, as a pointed crystal, a sharp pinnacle of rock, an obelisk, etc.
(v. t.) To form in the shape of a needle; as, to needle crystals.
(v. i.) To form needles; to crystallize in the form of needles.
Example Sentences:
(1) Needle acupuncture did, however, increase the pain threshold compared with the initial value (alpha = 0.1%).
(2) The fine needle aspiration cytology features of twelve peripherally located bronchioloalveolar cell carcinomas of the lung diagnosed by fine needle aspiration biopsy are described.
(3) Needle insertion close to the midline is the safest technique.
(4) The intra cellular free amino acid concentrations of skeletal muscle were determined in tissue specimens obtained before operation and on the third postoperative day using a percutaneous needle biopsy technique.
(5) The results showed the kind of needling sensation while acupuncture had close relation with the appearance of PSM and the acupuncture effect.
(6) Use 3-ml Luer-Lok syringes and 30-gauge needles and thread the needle carefully into the vessel while using slow and steady injection with light pressure.
(7) US guidance facilitated placement of a 22-gauge needle by means of a subxyphoid or transthoracic approach.
(8) These findings in a patient with acute leukaemia are strongly suspicious of fungal infection, and percutaneous fine-needle aspiration under ultrasound or computed tomography-guidance is indicated.
(9) Nuclear DNA distribution in fine-needle specimens from 112 breast carcinomas and 45 prostatic tumours was studied.
(10) Recent reports have indicated the usefulness of nuclear grooves (clefts or notches) as an additional criterion for the diagnosis of papillary thyroid carcinoma in fine needle aspirates; most of these studies were carried out on alcohol-fixed material stained with the Papanicolaou stain or with hematoxylin and eosin, which yield good nuclear details.
(11) The retreating rate constants deduced from the dissolution results were well coincident with the values directly determined by the needle penetration method, suggesting good applicability of the proposed equation.
(12) One to 6 needles were used on each occasion in a maximum of 3 treatments.
(13) Using a special electromyographic hypodermic needle, we injected botulinum A toxin into one of the vocal folds of two patients with severe spasmodic dysphonia.
(14) One hundred thirty-two of 397 consecutive percutaneous fine needle aspirations done at the University of Virginia between January, 1979, and December, 1984, for pulmonary lesions showed no evidence of cancer on cytological examination.
(15) The method can be successfully applied to richly cellular needle aspirates.
(16) During the surgery for the purpose of removal of the tumor, needle type-O2 sensors were inserted into femoral artery and in brain tumor to measure PaO2 and intratumoral O2 pressure.
(17) Consequently the puncture site becomes small (a balloon-catheter may be introduced through a 16 G catheter needle) allowing punctures proximal to lesions (e.g.
(18) The results of 1245 amniocenteses performed by the "free hand needle" technique and ultrasonic control are discussed.
(19) Various methods have so far been used to treat pneumothorax, including rest, needle exsufflation and blind drainage.
(20) This article demonstrates the importance of the use of immunocytochemical methods on fine-needle aspirates to diagnose metastases to the breast.