ionic compound
ionic compound Substance formed by ionic bonding, a chemical bond of positively and negatively charged
ions. Salts, bases and some acids are ionic compounds. As crystalline solids, they have high melting points and boiling points. As solids, they are nonconductors of electricity, and are usually soluble in water but insoluble in organic solvents. In the liquid and molten states, ionic compounds are good conductors.
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Pilot- and full-scale measurements of VOC emissions from lumber drying of Inland Northwest species.(Volatile organic compounds )
Magazine article from: Forest Products Journal; 7/1/2004; ; 700+ words
; ...conducted at a small-scale university kiln...emphasis was on measurement of speciated VOCs...methods Two series of measurements were conducted at...of Idaho small-scale kiln (500 board...experimental plan included measurement of terpenes, aldehydes...
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Real-time, small-scale measurements in biological systems: dynamic devices that allow control of chemical environments as well as chemical sensing have been used in applications such as the investigation of chemical fluctuations on the surface of individual cells and in the living brain.(Instruments & Systems)
Magazine article from: Bioscience Technology; 4/1/2007; 700+ words
; ...advances in real time measurement have been made...changes down to the scale of a few cells...such a brief time scale that the molecule...often to perform measurements in intact animals...millisecond time scales may escape detection...the micrometer scale that sense ...
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The Dryline on 22 May 2002 during IHOP_2002: Convective-Scale Measurements at the Profiling Site
Magazine article from: Monthly Weather Review; 1/1/2006; ; 700+ words
; ...respectively. These measurements are combined with the vertical velocity measurements derived from the National...observation of the small-scale variability within the boundary...Doppler radar (S-Pol) measurements, are also used to provide...observational network, measurement strategy, and ...
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Use of laboratory-scale rill and interill erodibility measurements for the prediction of hillslope-scale erosion on rehabilitated coal mine soils and overburdens.(Statistical Data Included)
Magazine article from: Australian Journal of Soil Research; 3/1/2000; ; 700+ words
; ...1987; Evans 1992). The use of laboratory scale measurements for prediction of hillslope-scale erosion offers many technical advantages and...the parameterisation of predictive hillslope scale models, usually due to the inadequate representation...
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ADC enables temperature-compensated weigh-scale measurements.(Technology Information)
Magazine article from: EDN; 7/5/2001; ; 700+ words
; ...temperature compensation in weigh-scale applications by simultaneously...The output data from both measurements is available in parallel...3 mV/V produces a full-scale output of 15 mV when a 5V excitation...128, resulting in a full-scale input span of the ADC equal...
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Resolvable- and subgrid-scale measurement in the atmospheric surface layer: Technique and issues
Magazine article from: Journal of the Atmospheric Sciences; 10/15/1998; ; 700+ words
; ...new technique for the measurement of two-dimensionally...resolvable- and subgrid-scale (SGS) turbulence...resolvable- and subgrid-scale velocity and temperature...energy-containing scales of vertical velocity...resolvable- and subgrid-scale dy namics of surface...accessible to experimental ...
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Virginia Inventor Develops Units Scale Measurement Device
News Wire article from: US Fed News Service, Including US State News; 7/22/2006; 494 words
; ...measuring and teaching scales of units. According...students different scales of measure and aiding...taking of accurate measurements by users of the device...fractions of inches. Each scale represents a different...such that the feet measurement is arranged next to...larger and smaller ...
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A confirmatory study of rating scale category effectiveness for the coaching efficacy scale.(Measurement and Evaluation)(Report)
Magazine article from: Research Quarterly for Exercise and Sport; 9/1/2008; ; 700+ words
; ...Item Response Theory (IRT) measurement models. IRT is well suited to analyze rating scale data (Wright & Masters...are fit to the Rasch rating scale model and not a more complex...in part, the same rating scale structure is imposed across...
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The Patient-Specific Functional Scale: measurement properties in patients with knee dysfunction.
Magazine article from: Physical Therapy; 8/1/1997; ; 700+ words
; ...better or worse (five-point scale), (2) whether they are...change using a transitional scale in which the patient is asked...condition-specific or generic scale may incorporate many questions...3) that it yield reliable measurements, (4) that it yield valid...
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Back to the Basics: Birmingham, Alabama, Measurement and Scale
Magazine article from: The Journal of Geography; 9/1/2005; ; 700+ words
; ...focus of this exercise is on scale and measurement, foundational skills for spatial...from a spatial perspective. Scale and measurement are concepts that even trained...Birmingham, Alabama Measurement and Scale Subject Area: Geography Grade...
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Health Measurement Scales
Encyclopedia entry from: Encyclopedia of Public Health
...rating, or health measurement scale. The indicators included in such a scale may be recorded mechanically...application of a numerical rating scale is often quite simple (as...range of standardized health measurement scales that are available for general...current repertoire of ...
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Scientific Method, Measurements and the
Book article from: Mathematics
...In brief, even direct measurement involves some degree or...error. The Relation Between Measurement and the Scientific Method...data must be measured on a scale. Because measurements are always imprecise to...develop increasingly accurate measurement devices. The possibility
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measurement
Book article from: A Dictionary of Sociology
measurement Measurement raises...On the Theory of Scales of Measurement...perfect Guttman scale), and any order...intervals on the scale (as in temperature...many other such scales (such as partial...higher levels of measurement are known as...Guttman and Likert ...
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Scales
Encyclopedia entry from: International Encyclopedia of the Social Sciences
...interval scale of measurement. Finally if a scale has equal psychological...measurement. Most scales used by social...that visual analog scales have an interval scale of measurement, whereas others...only an ordinal scale of measurement. Ratings on ...
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Richter Scale
Book article from: World of Earth Science
Richter Scale The earliest earthquake measurements were simple descriptions...called the modified Mercalli Scale, dividing the measurements into 12 categories: level...was influenced by the measurement's distance from the earthquake...
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