... be seen with conditions that interfere with their absorption in the small intestine. These may include: Celiac ... or no intrinsic factor is produced, preventing the absorption of B12. Surgery that removes part of the ...

A short discussion is given on the difficulties inherent in solar absorption air conditioning. Passive heating and cooling systems, nocturnal radiative cooling, and backup systems are briefly mentioned. (WDM)

Characteristics of cw lasers with intracavity absorption are discussed by taking account of the spatial relaxation as well as mode competition. A comparison is made with the conventional single-path absorption method, under the same conditions, for estimating the absorption enhancement ...

... Page 3. 62-1114 C= A MEDIUM WITH A NEGATIVE ABSORPTION FACTOR By ... A MEDIU1, WITH A NEGATIVE ABSORPTION FACTOR ...

... Title : Absorption Air Conditioning. ... Abstract : NOS, Indian Head has proposed a study of steam absorption air conditioning. ...

Numerous factors may act to increase or decrease the biologic availability of heavy metals. The precise mechanisms controlling gastrointestinal absorption are unknown, even for an essential element as extensively studied as iron. For iron there is substantial evidence that absorption is controlled at the level of the intestinal mucosal ...

Polarization-dependent absorption of obliquely incident laser radiation by dense plasmas has been observed. Irradiation of a planar plasma with a nearly collimated p-polarized laser beam shows an enhancement in absorption by a factor of 2 to 2.5 over s-polarized irradiation. Theoretical estimates of the effect of resonance ...

Most previous models of vapour absorption in the respiratory tract have assumed steady state flow fields and steady state diffusion into the airway walls. However, recent studies have shown that transient absorption flux into the walls of the upper airways can significantly influence predicted uptake or deposition values. The disadvantage of accounting for ...

Describe the factors involved in oral drug absorption and the influences of meal-related variables on those factors.

This paper discusses the performance of 3-ton, 15-ton, and 25-ton absorption chillers fired by solar hot water. An important concern to manufacturers and designers of solar cooling systems is the effect of solar insolation on the chilled water output and efficiency of absorption chillers. Hourly performance factors are calculated for ...

The absorption of moderately and highly soluble vapors into the walls of the conducting airways was previously shown to be a transient process over the timescale of an inhalation cycle. However, a boundary condition to predict the transient wall absorption of vapors in CFD simulations does not exist. The objective of this study was to ...

The radiative properties of bubbles or particles embedded in an absorbing medium are investigated. We aim first to determine the conditions under which absorption by the surrounding medium must be accounted for in the calculation of the efficiency factors by comparing results from Mie theory and the far-field and near-field ...

For the characterization of CO(2) absorption in aerated microalgal culture systems, a different approach based on K(L)a(O(2)) determination and transformation was studied. To confirm the validity of this method, the influence of reactions between CO(2) and compounds (OH(-), H(2)O, and NH(3)) present in the culture medium upon the absorption mechanism was ...

Based on a microarray study, which demonstrated the upregulation of Sp6 transcriptional factor in iron deficient rat duodenum, we reasoned that SP6 could regulate iron absorption by controlling the expression of iron absorption genes (Collins,2006). For that, we generated Sp6 specific intestinal knockout mice. Our data suggest a lack ...

The water absorptions behaviors of the okra fibers, which are available in north east India, were studied under ambient, annealed, bleached and mercerized conditions by using ordinary gravimetric absorption method. The gains in moisture content in the fibers due to water absorption as well as their capillarity at ...

... Title : THE RATIO OF ABSORPTION TO BACKSCATTER OF SOLAR RADIATION BY AEROSOLS DURING KHAMSIN CONDITIONS AND ...

Under conditions of Anomalous X-ray Transmission (known as the Borrmann Effect), an X-ray standing wave is set up inside a crystal, leading to a strong reduction in electric dipole absorption. We show that electric quadrupole absorption is not similarly diminished and is thus relatively enhanced by a large factor. ...

The authors examine significant experimental and theoretical material related to the hydrogen embrittlement of aluminum alloys and systemize them for the purpose of obtaining a qualitative picture of the role of hydrogen embrittlement in corrosion cracking and determination of the influence of metallurgical factors on both phenomena. Conditions of hydrogen ...

This paper reports that a basic program for IBM PC-compatible computers optimizes the design of packed absorption or stripping columns with respect to operating and installation costs. The program provides a plot of column costs as a function of absorption/stripping factor, from which the final design conditions ...

1. The effect of variability of gastric emptying and oro-caecal transit on the absorption of a multicomponent solution of frusemide, atenolol, hydrochlorthiazide and salicylic acid has been studied in six healthy subjects. Each subject was studied on five separate occasions: three times under basal conditions, once following metoclopramide and once ...

Our knowledge of the mechanisms and regulation of intestinal absorption of water-soluble vitamins under normal physiological conditions, and of the factors/conditions that affect and interfere with theses processes has been significantly expanded in recent years as a result of the availability of a host of valuable molecular/cellular ...

The variation factors of data using atomic absorption method are considered as follows: 1. Sampling 2. Contamination of glassware 3. Damaged cuvettes 4. Chemical interference by coexisting elements. Those problems of the variation factor are solved by checking and replacement of sample nozzle, glassware, and cuvettes. The chemical ...

In this paper a computer package for the design and optimization of the simple Li-Br absorption air conditioning system, operated by solar energy, is developed in order to study its performance. This was necessary, as a first step, before carrying out any computations regarding the dual system (1-3). The computer package has the facilities of examining any ...

The applicability of the two-flow model to problems is dependent on assumptions that are used to reduce the model to two equations with two unknowns. Such a reduction requires proper parameterization of the shape factors. An extensive data set that reveals the relationships of shape factors to scattering-to-absorption ratios (0.1 < ...

The influence of various factors on the damage threshold of coated optical components used in high-power, pulsed CO/sub 2/ lasers is reviewed. The factors considered are substrate roughness and polishing defects, coating defects, linear absorption, deposition parameters, standing-wave electric fields, pulsewidth dependence, ...

The absorption of mixtures of nitrogen oxides into aqueous solutions of NaOH was investigated in the range of partial pressures of 0.004 to 0.05 atm NO and 0.002 to 0.015 atm NO_2. Absorption experiments were conducted in a gas-liquid contractor that permitted independent variation of the gas and liquid mass transfer coefficients. The use of concentrated ...

Cobalt and iron seem to share a common intestinal absorptive pathway. Cobalt decreases iron absorption as effectively as equimolar amounts of carrier iron. Factors which influence the absorption of one metal significantly affect the absorption of the othe...

... Title : NUMERICAL EVALUATION OF X-RAY ABSORPTION FACTORS FOR CYLINDRICAL SAMPLES AND ANNULAR SAMPLE CELLS,. ...

... An approximate connection between riometer absorption and the square-root of the proton flux for nighttime conditions is presented. ...

Conditions are investigated for initiation of nonreflecting absorption of electromagnetic radiation in a polar dielectric layer applied to a reflecting metal substrate.