(n.) A kind of shallow plow used in tillage to break the ground, and clear it of weeds.
(n.) A thin piece of metal placed between two parts to make a fit.
Example Sentences:
(1) The model contains 13 parameters that can be varied, 12 shim coil currents, and the receiver mixer frequency.
(2) The derivatized bile acids were separated stepwise on a Shim-pack CLC-ODS column using acetonitrilemethanol-water (100:50:30) (A), (100:50:20) (B), and (100:50:0) (C) as mobile phases with changing automatically from A to C using a solvent changer.
(3) For this purpose, a method of automatic shimming was developed and tested on phantoms and volunteers.
(4) This probe design tunes to 23-Sodium for rapid shimming and then, to 31-Phosphorus for measurements of pH and high energy phosphate metabolites.
(5) Voxels may be shimmed using only first-order X, Y, and Z shims to produce three-dimensional shim current maps, thus avoiding shim coupling problems.
(6) A novel latent proteinase of which activity was induced by heating in the presence of NaCl was purified to homogeneity from threadfin-bream muscle by a combination of DEAE-cellulose, Con A-Sepharose, Arg-Sepharose, and Shim-pack HAC chromatographies.
(7) Our localization strategy also allows us to shim easily on the well-defined volume of interest and leads to high-resolution spectra that exhibit multiplet structure.
(8) A complete shimming process generally requires only 80 transients.
(9) A data link to the shim power supply allows automatic update of currents.
(10) Addition of CO2 to the oxygen and appropriate changes in gas flow and "shim" pressure permit changes to be made in the ventilation of the device during perfusion to achieve desired levels of PaO2 and PaCO2 under widely disparate conditions of temperature and flow.
(11) We recently described the identification of BOS1 (Newman, A., J. Shim, and S. Ferro-Novick.
(12) However, despite our monitoring of additional variables, including shim and inlet pressure and recirculation flow, gas exchange abnormalities were encountered in 5 patients on whom the membrane oxygenator was used; in 4 of these cases the abnormalities were encountered prior to our recognition of the potential for occasional internal shunting with this device.
(13) The thickness of the blood film is decreased by increasing the "shim" pressure, so that increasing the "shim" presure results in higher PaO2.
(14) The chromatographic conditions were as follows: column: Shim-pack CLC-ODS; mobile phase: methanol-water (70:30).
(15) In addition to the main magnet important additions like gradient and shim coils, aspects of site planning and future problems are discussed.
(16) An acid sialidase [EC 3.2.1.18] has been purified from human placenta by means of successive procedures including extraction, Con A-Sepharose adsorption, ammonium sulfate precipitation, activation, p-aminophenyl thio-beta-D-galactoside-CH-Sepharose (PATG-Sepharose) affinity chromatography and high-performance liquid chromatography on a Shim pack Diol 300 column.
(17) The resolution and homogeneity limitations of echo-planar imaging (EPI) are overcome by zoom imaging of an easily shimmed localized volume.
(18) This high failure rate has led the authors to reevaluate the use of prosthetic shims or wedges in large fragment defects but to continue to use bone grafting for smaller, circumscribed defects.
(19) A sialidase [EC 3.2.1.18] has been partially purified from human placenta by means of procedures comprising Con A-Sepharose adsorption, ammonium sulfate precipitation, sucrose density gradient centrifugation, and high-pressure liquid chromatography on a Shim pack Diol 300 column.
(20) We have developed a pulse sequence which enables fast and accurate measurement of three-dimensional field maps in vivo, and a data analysis package that allows calculation of shim currents to optimally shim arbitrary selected volumes.
Tillage
Definition:
(n.) The operation, practice, or art of tilling or preparing land for seed, and keeping the ground in a proper state for the growth of crops.
(n.) A place tilled or cultivated; cultivated land.
Example Sentences:
(1) Two long-term tillage studies on fine-textured, clay loam soils were sampled in July and November 1977 following 2 years of limited rainfall.
(2) These data indicate that tillage can have substantial effects on the accumulation of NO3 in soils and that additional research is needed to determine the mechanisms responsible for these differences.
(3) In contrast, the tillage treatment, alone or in combination with the Agri-Strep or Kocide treatments, had a short-term stimulatory effect and increased populations of applied bacteria and also levels of indigenous fungi and bacteria.
(4) Soil samples were taken in 1 foot increments to a depth of 5 feet to ascertain the accumulation and distribution of nitrate-nitrogen (NO3-N) in the soil profile as influenced by tillage.
(5) The two cultivated sites have been eroded by aeolian processes and tillage practices.
(6) The burn and burn-tillage treatments produced the most significant reductions in bacterial populations.
(7) Evaluations of the effectiveness of diapause egg control or the elimination of early spring broods to provide lasting, season-long suppression were not encouraging if only conventional methods such as insecticides or tillage were used.
(8) Such techniques already exist, from terracing to prevent soil loss through erosion and flooding, minimum or zero tillage, coupled with crop rotation and the application of manure, compost or mulching.
(9) Deeper tillage of the soil generally decreased C-content.
(10) Nitrate-N accumulation in the 0 to 3 foot profile in late July was reduced by 75% (no tillage) to 38% (chisel plow) compared with the conventional moldboard tillage system in this 8-year-old study.
(11) Conservation tillage systems facilitate the infiltration of greater amounts of precipitation into the soil profile by reducing surface runoff.
(12) Dynamic processes in the model include foliar interception, weathering and absorption; plant growth, uptake, harvest and senescence; soil resuspension, percolation, leaching and tillage; radioactive decay; and livestock ingestion, absorption and excretion.
(13) "Fall tillage can also reduce weed numbers, but it is generally not as effective as residual herbicides.
(14) Field plots of bush beans (Phaseolus vulgaris), sprayed with the bacterium Pseudomonas syringae, Pseudomonas fluorescens, or Erwinia herbicola, received the following treatments: (i) control, (ii) tillage, (iii) burning, (iv) burning plus tillage (burn-tillage), (v) Kocide (cupric hydroxide), (vi) Kocide plus tillage, (vii) Agri-Strep (streptomycin sulfate), and (viii) Agri-Strep plus tillage.
(15) Rendering moldy peanuts inaccessible to the cranes by conventional tillage resulted in reduced crane mortality in these areas.
(16) Decontamination treatments of burning and biocide application, alone and in combination with tillage, were evaluated for their ability to reduce populations of bacteria applied to the leaves of plants in field plots.