Density absorption. Medical search. Frequent questions

The high rate of water absorption at the early periods of the test has corresponding capillary coefficient of steep slope within the same period. (scirp.org)
The relationship between the variables Q the water absorption per unit area of the specimen and K the capillary coefficient, is that as the water absorption gets higher, so does the capillary coefficient and the percentage of the variation is expressed by the correlation coefficient R 2 . (scirp.org)
Second, not all transitions have the same transition matrix element, absorption coefficient or oscillator strength. (wikipedia.org)
Absorption Coefficient-- Fractional absorption of the energy of an unscattered beam of x- or gamma- radiation per unit thickness (linear absorption coefficient), per unit mass (mass absorption coefficient), or per atom (atomic absorption coefficient) of absorber, due to transfer of energy to the absorber. (cdc.gov)
The total absorption coefficient is the sum of individual energy absorption processes (see Compton Effect, Photoelectric Effect, and Pair Production). (cdc.gov)
Absorption Coefficient, Linear-- A factor expressing the fraction of a beam of x- or gamma radiation absorbed in a unit thickness of material. (cdc.gov)
In the expression I=Ioe-µx, Io is the initial intensity, I the intensity of the beam after passage through a thickness of the material x, and µ is the linear absorption coefficient. (cdc.gov)
Absorption Coefficient, Mass-- The linear absorption coefficient per cm divided by the density of the absorber in grams per cubic centimeter. (cdc.gov)
It is frequently expressed as µ/, where µ is the linear absorption coefficient and the absorber density. (cdc.gov)
Samples were cut from the panels and the sound absorption coefficient was measured using an impedance tube. (helsinki.fi)
The study noticed that the density of the sample had a significant effect on the absorption coefficient. (helsinki.fi)
On average, the higher the sample density, the higher the sound absorption coefficient. (helsinki.fi)
The effects of the measured properties of fibers were difficult to determine be-cause it was not known whether the absorption coefficient was affected by measured property or by anoth-er property that was not considered in this study. (helsinki.fi)
By increasing the density of dissolving pulp it's the absorption coefficient can be raised above the absorption coefficient of glass wool. (helsinki.fi)

We propose to do an oscillator strength based truncation of the single-orbital transition space to reduce the computational effort of TD-DFTB based absorption spectra calculations. (vu.nl)
Analysis of the spectral density and the intensities, width and shape of spectral lines sometimes can yield a lot of information about the observed system like it is done with Mössbauer spectra. (wikipedia.org)
L2-L4 exhibited similar electronic absorption spectra with λ max at ∼390 nm that is tentatively assigned to π→π* transition. (ias.ac.in)

Absorption spectroscopy was applied to 1 MA wire-array Z-pinches. (aps.org)
In X-ray absorption spectroscopy (XAS) the energy of the absorbed photon raises an electron from a deeply bound state into unoccupied bound states or it gains enough energy to escape the atom. (lu.se)
The fine structure of this X-ray emission spectroscopy (XES) can give detailed information on the density of filled states and can be used due to the influence of spin-orbit coupling to track the oxidation and total spin state of the emitting atom. (lu.se)

and the hygro-thermal property using water absorption (capillary absorption and total immersion) as measures. (scirp.org)
The concrete bulk and oven dry densities were obtained as 1789 KN/m 3 and 1674 kg/m 3 respectively , while the total water and capillary water absorption increases with time of suction. (scirp.org)
With the 30% replacement of coarse aggregate, the density and water absorption properties of concrete produced are within acceptable limits. (scirp.org)
This research work is limited to replacing only about 30% volume of natural coarse aggregate by equivalent volume of expanded polystyrene (EPS) to test for the density, and water absorption potentials. (scirp.org)
Water Absorption, Approximate 24 hr. (matweb.com)

I am interested in High Shock Absorption Nbr Yoga Mat High Density Foam Fitness Exercise Mat could you send me more details such as type, size, quantity, material, etc. (fitnessyogamat.com)
The slurry output is uniform and stable, the density of the foam concrete finished product i. (mis-asia.com)
Cushioned insole with an extra layer of pampering high-density memory foam. (blair.com)
The density of the foam prevents absorption of the polish, which saves polish and improves final results. (3m.com)
The purpose of this study is to investigate how the physical and chemical properties of the fiber affect the absorption capacity of the foam-formed pulp panel. (helsinki.fi)

This makes density of states calculations of absorption band shapes easier. (wikipedia.org)
Presented here is a framework to reduce Ir loading by combining core-shell iridium/metal nitride morphologies using in situ experiments and density functional theory (DFT) calculations. (osti.gov)
The synthetic mechanisms for L2, L3 were studied by density functional theory calculations. (ias.ac.in)
The assignment was further supported by density functional theory (DFT) calculations. (ias.ac.in)

Light absorption by phytoplankton, non - algal particles (NAP) and chromophoric dissolved organic matter (CDOM) was investigated at 90 sites of a clear, deep artificial lake (Lake Qiandaohu) to study natural variability of absorption coefficients. (mdpi.com)
However, the absorption coefficients dissolving pulps were high despite their low densities. (helsinki.fi)
There were no significant differences in the absorption coefficients with the samples of the same density. (helsinki.fi)
Dissolving pulp had the highest absorption coefficients and the lowest density. (helsinki.fi)

We show that even a sizable truncation does not destroy the principal features of the absorption spectrum, while naturally avoiding the unnecessary calculation of excitations with small oscillator strengths. (vu.nl)
In quantum mechanics, an absorption band is a range of wavelengths, frequencies or energies in the electromagnetic spectrum that are characteristic of a particular transition from initial to final state in a substance. (wikipedia.org)
In systems with a very large number of states like macromolecules and large conjugated systems the separate energy levels can't always be distinguished in an absorption spectrum. (wikipedia.org)
If the line broadening mechanism is known and the shape of then spectral density is clearly visible in the spectrum, it is possible to get the desired data. (wikipedia.org)
The Landweber iteration approach is used to construct the radial pair distribution function (RPDF) from an X-ray absorption (EXAFS) spectrum. (iucr.org)
L1 exhibited electronic absorption spectrum with λ max at ∼320 nm. (ias.ac.in)
The absorption spectrum thus contains detailed information about the density of empty states and allows conclusions about coordination, oxidation state and many more information about the local structure. (lu.se)

Aerodynamic diameter, AD - the physical diameter of a particle of unit density (1 gram per cubic centimeter) that has the same gravitational settling velocity as the particle of interest. (cdc.gov)

In order for a substance to change its energy it must do so in a series of "steps" by the absorption of a photon. (wikipedia.org)
One of the prominent phase contrast imaging methods, Talbot-Lau grating interferometry, is limited by the manufacturing, alignment, and photon absorption of the analyzer grating, which is placed in the beam path in front of the detector. (lu.se)
If the energy of the the photon is sufficient to overcome the binding potential the electron the absorption probability is influenced by a electron scattering process from the local environment of the surrounding atoms. (lu.se)

Porous materials such as glass wool, mineral wool or polyester based batts are commonly used as sound absorption panels. (helsinki.fi)
By foaming cellulose, water and soap, it is possible to form an environmentally friendly porous fiber material, which has the same sound absorption capacity as mineral wool. (helsinki.fi)
The purpose is to find properties that increase the sound absorption ca-pacity. (helsinki.fi)

Here we theoretically investigate the optical absorption resonances of armchair carbon nanotubes and zigzag graphene nanoribbons continuously spanning the tube (ribbon) transverse sizes from 0.5(0.4) nm to 8.1(12.8) nm. (nature.com)

This absorption process can move a particle, like an electron, from an occupied state to an empty or unoccupied state. (wikipedia.org)
Activity Median Aerodynamic Diameter (AMAD)-- The diameter of a unit-density sphere with the same terminal settling velocity in air as that of the aerosol particle whose activity is the median for the entire size distribution of the aerosol. (cdc.gov)

The changes observed in the absorption by three seawater components (phytoplankton, detritus and chromophoric dissolved organic matter or CDOM) were analyzed in relation to changes in bio-optical regions and composition of the phytoplankton community (determined based on phytoplankton pigments). (scirp.org)

The electrons filling the core hole that is generated during the absorption process emit X-ray photons whose energy can be analyzed. (lu.se)

ANP infusion did not alter Na absorption at the esophagus, but it profoundly reduced the absorption at the intestine. (bioone.org)

NGC is characterized by an average Chla of 0.7 mg/m3 and the predominance of picophytoplankton, characterized by the dominance of zeaxanthin (marker pigment for cyanobacteria) and/or chlorophyll b (marker pigment for green algae), along with a co-dominium by CDOM and phytoplankton to light absorption. (scirp.org)
Results indicate that Case II waters can be very different when evaluating the individual contribution by phytoplankton, detritus and CDOM to total light absorption what has to be considered for the selection of bio-optical models for each specific region what can also help to a better definition of the related uncertainties. (scirp.org)

Intestinal damage causes diarrhea and poor absorption of nutrients, which may lead to weight loss. (medlineplus.gov)
Furthermore, sharp decline of parasite density immediately after quinine and doxycycline administration by nasogastric tube is not consistent with the proposed hypothesis of reduced intestinal absorption. (cdc.gov)

The new maps also reveal several sight-lines where CaII absorption is high and the corresponding NaI absorption is low, and vice-versa. (aanda.org)
Density and Volumetric Behavior of Binary CO2 + n-Decane and Ternary CO2 + n-Decane + Naphthalene Systems at High Pressure and High Temperature. (acs.org)
X-ray phase contrast imaging enables the measurement of the electron density of a sample with high sensitivity compared to the conventional absorption contrast. (lu.se)
Since our interest lays primarily in the dynamics of molecules in solution this process can be used to study the relation of points of high electron density to each other. (lu.se)

X-ray phase contrast imaging (XPCI) is more sensitive to density variations than X-ray absorption radiography, which is a crucial advantage when imaging weakly-absorbing, low-Z materials, or steep density gradients in matter under extreme conditions. (nature.com)

During the last two decades density functional based linear response approaches have become the de facto standard for the calculation of optical properties of small- and medium-sized molecules. (vu.nl)
This is especially true for time-dependent density functional tight binding (TD-DFTB), where the evaluation of the matrix elements is inexpensive. (vu.nl)

For condensed matter and solids the shape of absorption bands are often determined by transitions between states in their continuous density of states distributions. (wikipedia.org)

50 000) absorption measurements of the NaI doublet (5889-5895 Å) along 482 nearby sight-lines, in addition to 807 new measurements of the CaII K (3933 Å) absorption line. (aanda.org)
We have combined these new data with previously reported measurements to produce a catalog of absorptions towards a total of 1857 early-type stars located within 800 pc of the Sun. Using these data we have determined the approximate 3-dimensional spatial distribution of neutral and partly ionized interstellar gas density within a distance-cube of 300 pc from the Sun. (aanda.org)
In situ X-ray absorption fine structure measurements are used to determine the structure and stability of the core-shell catalysts under OER conditions. (osti.gov)
Review of Density Measurements and Predictions of CO2-Alkane Solutions for Enhancing Oil Recovery. (acs.org)
Measurements and Modeling of Phase Behavior, Density, and Viscosity of Oil + Carbon Dioxide: Squalane + CO2 at Temperatures (313 to 363) K and Pressures up to 77 MPa. (acs.org)

Absorption-- The process by which a chemical penetrates the exchange boundaries of an organism after contact, or the process by which radiation imparts some or all of its energy to any material through which it passes. (cdc.gov)

For (far) infrared, microwave and radio frequency ranges the temperature dependent occupation numbers of states and the difference between Bose-Einstein statistics and Fermi-Dirac statistics determines the intensity of observed absorptions. (wikipedia.org)

The x-ray absorption near-edge structure of graphene, graphene oxide, and diamond is studied by the recently developed real-space full potential multiple scattering (FPMS) theory with space-filling cells. (hal.science)

Corrections can be applied for this self-absorption of alpha particles in some samples (e.g. air filters). (cdc.gov)

Together with our previous finding that ANP does not alter renal Na excretion, we propose that ANP reduces plasma Na concentration in SW eels by inhibiting drinking and subsequent absorption of Na by the intestine. (bioone.org)
An example is plutonium-239 produced following neutron absorption by uranium-238 and subsequent decays of uranium-239 to neptunium-239 and then to plutonium-239. (cdc.gov)

Quantitative analysis of the compressed object is achieved using a density map reconstructed from the experimental data. (nature.com)
Experimental liquid densities of decane and of CO 2 (1) + decane (2) binary mixtures (at five different compositions, x 1 = 0.0551, 0.2369, 0.4536, 0.8114, and 0.9663) were measured from (313 to 363) K and at pressures up to 25 MPa. (acs.org)

Normalized absorption profiles were fitted by varying the velocity, doppler width and column density for all intervening interstellar clouds. (aanda.org)
Such regions are probably influenced by the effects of the local stellar ionization field which can significantly affect the observed NaI/CaII column density ratio. (aanda.org)
We investigated the magnitude of change in topographical and seasonal O 4 vertical column density (VCD) in Northeast Asia and evaluated its effect on AEH retrieval accuracy using our AEH retrieval algorithm. (elsevierpure.com)

In contrast, a similar plot for the equivalent width of CaII shows no sharply increasing absorption at 80 pc, but instead we observe a slowly increasing value of CaII equivalent width with increasing sight-line distance sampled. (aanda.org)

The bulk density of silica gel is 480 - 720 kg/m3. (newmars.com)
The bulk density is 800 - 870 kg/m3. (newmars.com)

Absorption Ratio, Differential-- Ratio of concentration of a nuclide in a given organ or tissue to the concentration that would be obtained if the same administered quantity of this nuclide were uniformly distributed throughout the body. (cdc.gov)

Activation products - radionuclides that result from the absorption of neutrons by uranium, and other materials present in a nuclear reactor. (cdc.gov)

This effect is due to the depth and density of the pigmented cells (or melanin granule dispersion) and the physical properties of light absorption and reflection described by the Tyndall light phenomenon or effect. (medscape.com)

Absorption panels are utilized in public spaces to improve the acoustic properties of the space and to reduce reverberation. (helsinki.fi)

Condensed systems, like liquids or solids, have a continuous density of states distribution and often possess continuous energy bands. (wikipedia.org)

Using the mass values thus obtained and formulas in this test method, it is possible to calculate density, relative density (specific gravity), and absorption. (geocomp.com)

The resulting total column densities were then used in conjunction with the Hipparcos distances of the target stars to construct inversion maps of the 3D spatial density distribution of the NaI and CaII bearing gas. (aanda.org)
UGC is characterized by an average Chla of 1.78 mg/m3, the dominance of microphytoplankton (diatoms and dinoflagellates) and a stronger contribution of detritus to total light absorption. (scirp.org)

The strength of an electromagnetic absorption process is mainly determined by two factors. (wikipedia.org)

The atomic pair distribution function describes the density of interatomic distances in matter. (iucr.org)

For crystals the electronic band structure determines the density of states. (wikipedia.org)

Inflammation and poor nutrient absorption may lead to problems affecting many other organs and systems of the body in affected individuals. (medlineplus.gov)
Refractory sprue is characterized by chronic inflammation of the gastrointestinal tract, poor absorption of nutrients, and an increased risk of developing a type of cancer of the immune cells called T-cell lymphoma. (medlineplus.gov)

Molecular Simulation Study on the Density Behavior of n-Alkane/CO2 Systems. (acs.org)

Anatomy33

Organisms12

Diseases5

Chemicals and Drugs92

Analytical, Diagnostic and Therapeutic Techniques and Equipment46

Phenomena and Processes56

Disciplines and Occupations7

Technology, Industry, Agriculture16

Information Science4

Health Care8

Coefficient14

Spectra3

Spectroscopy3

Water absorption5

Foam5

Calculations4

Coefficients4

Spectrum7

Cubic centimeter1

Photon3

Sound absorption3

Optical absorption1

Particle2

Chromophoric dissolved organi1

Photons1

Esophagus1

Phytoplankton2

Intestinal2

High4

Variations1

Functional2

Transitions1

Measurements5

Chemical1

Temperature1

Graphene1

Particles1

Subsequent2

Experimental2

Column density3

Contrast1

Bulk2

Ratio1

Activation1

Dispersion1

Properties1

Continuous1

Mass1

Total2

Process1

Distances1

Crystals1

Poor2

Study1