How to use Concentrations in a sentence
The difference of potential between two solutions of a substance at different concentrations can be calculated from the equations used to give the diffusion constants.
It is evident that the undissociated part of each acid must eventually be in equilibrium with the free hydrogen ions, and, if the concentrations are not such as to secure this condition, readjustment must occur.
If a solution, let us say of sugar, be confined in a closed vessel through the walls of It is probable that in both these solutions complex ions exist at fairly high concentrations, but gradually gets less in number and finally disappear as the dilution is increased.
In such salts as potassium chloride the ions seem to be simple throughout" a wide range of concentration since the transport numbers for the same series of concentrations as those used above run Potassium chloride 0.5 1 5, 0.515, 0.514, 0.513, 0.509, 0.508, 0.507, 0.507, 0.506.
The forces between the ions of a strongly dissociated solution will thus be considerable at a dilution which makes forces between undissociated molecules quite insensible, and at the concentrations necessary to test Ostwald's formula an electrolyte will be far from dilute in the thermodynamic sense of the term, which implies no appreciable intermolecular or interionic forces.Advertisement
In order that the solutions of these should be isohydric and the concentrations of the hydrogen ions the same, we must have a very large quantity of the feebly dissociated acetic acid, and a very small quantity of the strongly dissociated hydrochloric, and in such proportions alone will equilibrium be possible.
In ordinary cases possible changes in the concentrations only affect the electromotive force by a few parts in a hundred, but, by means such as those indicated above, it is possible to produce such immense differences in the concentrations that the electromotive force of the cell is not only changed appreciably but even reversed in direction.
If the temperature at which this dense spontaneous shower of crystals is found be determined for different concentrations of solution, we can plot a "supersolubility curve," which is found generally to run roughly parallel to the "solubility curve" of steady equilibrium between liquid and already existing solid.
High concentrations of carbon dioxide in the blood, causes the blood to become more acidic.
In ordinary cells the difference is secured by using two dissimilar metals, but an electromotive force exists if two plates of the same metal are placed in solutions of different substances, or of the same substance at different concentrations.Advertisement
When the solutions may be taken as effectively dilute, so that the gas laws apply to the osmotic pressure, this relation reduces to E _ nrRT to c1 ey gE c2 where n is the number of ions given by one molecule of the salt, r the transport ratio of the anion, R the gas constant, T the absolute temperature, y the total valency of the anions obtained from one molecule, and c i and c 2 the concentrations of the two solutions.
When we compare together electric discharges the intensity of which is altered by varying, the capacity, we are unable to form an opinion as to whether the effects observed are due to changes in the density of the luminous material or changes of temperature, but the experiments of Sir William and Lady Huggins 1 with the spectrum of calcium are significant in suggesting that it is really the density which is also the determining factor in cases where different concentrations and different spark discharges produce a change in the relative intensities of different lines.
Pfeffer showed that certain substances in definite concentrations cause the tips of hyphae to turn towards them; other substances, though not innutritious, repel them, as also do nutritious bodies if too highly concentrated.
Porcelain, enamelled iron, for high concentrations even cast-iron without any protection, are also in use.
A general nerve-plexus probably exists over considerable parts of the skin, and there are special nervous concentrations in the region of the epistome and along a double crescent (N) which follows the parietal attachment of the coelomic septum.Advertisement
The bacterial and nitrate concentrations are quite abnormal in almost all the coastal stretches of Bardez taluka.
Talin, a very widely expressed actin binding protein protein is also found in muscle cells (at fairly low concentrations ).
It was further commented that the DETR paper indicated that other simple aldehydes were generally present at lower concentrations than formaldehyde and acetaldehyde.
Studies have confirmed that muscle protein synthesis rates are stimulated as long as blood amino acid concentrations remain high  .
When coupled with sonic anemometry, fast response sensors can provide information on atmospheric fluxes, as well as gas concentrations.Advertisement
Antimony concentrations reported for the foods analyzed for this survey indicate that exposure of infants to antimony concentrations reported for the foods analyzed for this survey indicate that exposure of infants to antimony from the diet is very low.
The buffer solution contains harmless concentrations of sodium azide.
It does, however, provide a useful indication of the uncertainties of the overall estimates of roadside benzene concentrations.
With certain short-acting benzodiazepines it is not possible to achieve a smooth decline in blood and tissue concentrations.
Concentrations of lead, zinc, cadmium and other heavy metals in lichens and marine bivalves are measured.Advertisement
Young broccoli sprouts have the highest concentrations of these phytochemicals, but broccoli sprouts have the highest concentrations of these phytochemicals, but broccoli in any form was found to have the desired effect.
Over a period of 14 months we found cadmium in counterfeits to average more than five times the concentrations in genuine brands.
Analysis lead, cadmium, copper and zinc concentrations were determined by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS ).
The restored canal would bring increased tourism throughout its length rather than in its present concentrations.
Eggs, miscellaneous cereals and meat products contained the highest nitrite concentrations.
In general, contaminant inputs have declined and elevated concentrations are often a legacy of former industrial discharges.
However, high concentrations or extended periods of exposure can have serious health effects.
The strategy is based on the latest research that suggests creatine's benefits are proportional to intracellular creatine concentrations  .
With the syrup, mean peak plasma concentrations are attained within 2 hours.
Several prognostic factors and serum rituximab concentrations are useful for predicting the therapeutic efficacy.
However, 50% reductions in North America or Asia will produce a larger impact in mean ozone concentrations.
Results A summary of the concentrations of pulegone and menthol found in mint confectionery and other mint products is given in Table 1.
The use of upper bound estimates may significantly overestimate total dioxins concentrations in those samples where most congeners are not present at the LOD.
For Quality Control purposes a reference sample with known concentrations of dioxins congeners was included in the batches of samples analyzed.
Uncertainty of whether the current distribution of valley bottom sites represent discrete concentrations or windows on a broader continuum.
This pattern of binding could explain the raised plasma corticosterone concentrations and adrenocortical hypertrophy previously noted in MHS.
Affected dogs have high blood creatine kinase concentrations and bizarre high frequency discharges on electromyographic examination.
For both geographical concentrations Atlantic exchanges emerged as crucial.
The aim is to achieve high concentrations of activated cyclophosphamide locally in the tumor while minimizing circulating levels of the drug.
Rather, it stated that hypericum " ...may significantly affect plasma concentrations of any drug that is metabolized by the cytochrome P-450 system.
The resulting graph shows the rapid decrease in concentrations in the 1960s and 1970s and the more gradual decrease in concentrations in the 1960s and 1970s and the more gradual decrease through the 1980s and 1990s.
The resulting graph shows the rapid decrease in concentrations in the 1960s and 1970s and the more gradual decrease through the 1980s and 1990s.
This study involved operating laboratory-scale thermophilic anaerobic digesters with high feed concentrations to limit additional energy costs.
Methods The analytical methodology for determining dioxin and PCB concentrations in cows ' milk has already been reported 15.
The combined dioxin and PCB concentrations were in the range 2.5 - 6.1 ng TEQ/kg milk fat.
Air pollution dispersion modeling was carried out to predict ground level pollution concentrations in the boro in 2004.
High efficiency electrostatic precipitators or fabric filters can reduce particulate emissions to low concentrations.
Inhibition of CYP2D6 may lead to increased plasma concentrations of co-administered drugs metabolized by this enzyme.
In contrast, ritonavir may decrease ethinyl estradiol concentrations.
The kidneys are capable of increasing calcium excretion nearly fivefold to maintain homeostatic serum calcium concentrations.
Flavonoid intakes were estimated based on the known flavonoid intakes were estimated based on the known flavonoid concentrations in specific foods.
By using a laser which excites the OH and induces fluorescence, he is able to measure the concentrations of the molecule.
The distributions of the flux, area, peak flux density and lifetimes of the concentrations are determined.
Mean concentrations of plasma vitamin C and red cell folate were significantly lower for men and women in receipt of household benefits.
The alpha cells detect that glucose concentrations are returning to normal and stop secreting glucagon.
Clearview HCG can detect hCG in urine at concentrations ≥ 25 mIU/ml.
The aim of the strategy was to reduce the air pollutant impact on human health by reducing airborne concentrations.
At high hydrogen concentrations the microorganism would allow hydrogen ions to leak through the cell membrane.
They are often accompanied by high pollutant concentrations, traffic impediments due to restricted visibility or wind shear, and interference with health.
They are an arbitrary imposition of a 1% per annum growth in future greenhouse gas concentrations.
Mineral concentrations were higher in organic soils whilst soil quality on conventional farms was significantly improved by the addition of organic fertilizer.
In the patient group, urinary excretion of 5-HIAA and serotonin was compared with concentrations of plasma indoles.
The improved glycaemic control is associated with a reduction in both fasting and postprandial plasma insulin concentrations.
In vitro Glivec inhibits the cytochrome P450 isoenzyme CYP2D6 activity at concentrations similar to those that affect CYP3A4 activity.
Based upon the measured concentrations the lifetime risk due to the ingestion of uranium isotopes was estimated.
No notable abnormalities in laboratory values associated with treatment were observed except for minor increases in serum concentrations of creatinine kinase.
In contrast, the protein is more readily leached through soil with lower clay concentrations, indicating that it could contaminate groundwater.
At that time, the landfill site at Buckden in Cambridgeshire was generating leachate containing significant concentrations of herbicides, mecoprop and isoproturon.
Nitrate concentrations were therefore higher in the winter months compared with greenhouse lettuces grown during the summer.
Barbiturates readily cross the placental barrier and are distributed throughout fetal tissues with highest concentrations in placenta, fetal liver and brain.
Grapefruit juice greatly increased the serum concentrations of both lovastatin and lovastatin acid.
Endometrial concentrations of prostaglandins E2 and F2 alpha in the follicular phase of the cycle were similar whether or not patients had menorrhagia.
Hence, strong inhibitors of this enzyme may inhibit the metabolism of clarithromycin, resulting in increased plasma concentrations of clarithromycin.
Of the four minor metabolites detected in urine, two are Phase I oxidative metabolites present in low concentrations.
In the metabolite images, colors represent metabolite concentrations.
With increasing attractant concentrations, the MCPs are gradually converted into a fully methylated, low affinity state.
If ozone concentrations exceed 180 micrograms per cubic meter, they must inform the public and provide health advice.
Nitrogen dioxide Monitoring data shows that current nitrogen dioxide concentrations are currently within the National Air Quality Strategy Objective concentrations for nitrogen dioxide Monitoring data shows that current nitrogen dioxide concentrations are currently within the National Air Quality Strategy Objective concentrations for nitrogen dioxide.
However, peel-off mats will work best with smaller particles, more homogeneous panicles, and at lower concentrations of particles per surface area.
The laboratory method used to detect high blood phenylalanine concentrations is tandem mass spectrometry.
It has been organized into research clusters, which offer concentrations of research that should attract future postgraduates.
Characteristic changes in extracellular potassium, sodium and hydrogen ion concentrations are usually diagnostic.
Insulin resistance also develops, due to downregulation of the insulin receptors caused by increased insulin production in response to increase glucose concentrations.
Maximum peak concentrations are obtained within 1 to 1.5 hours; serum prolactin decreases within 2 hours and is maximally decreased at 8 hours.
It's thought these complications are caused by protease inhibitors blocking the elimination of corticosteroids leading to higher concentrations in the blood.
Increased concentrations of selected elements can indicate the near proximity of mineralization.
Produced by smoldering fires, carbon monoxide reduces concentrations of reactive atmospheric chemicals called hydroxyl radicals that remove methane from the air.
Plasma sampling was performed every 2 hr for 24 hr and melatonin concentrations were measured by radioimmunoassay.
The method of estimating future benzene roadside and background concentrations is similar to that used for calculating exceedances of the 5 ppb standard.
Vegetables increase satiety and keep blood sugar concentrations steady so that the muscle building, fat burning process isn't interrupted.
I would have liked to have seen a graph or a table for dissolved oxygen concentrations in surface seawater included.
Overall the concentrations reported for young leaf spinach were lower than those reported for mature spinach.
Normal range morning serum testosterone concentrations are reached during the first day of dosing.
However, genetically modified plants could also contain unexpected high concentrations of plant toxicants.
Elevated bilirubin, alanine transaminase and lactate dehydrogenase concentrations are indicative of hepatocellular injury.
Low GI diets also reduce mean blood glucose concentrations, insulin secretion and serum triglycerides.
Estimating suspended sediment concentrations from ocean color measurements in moderately turbid waters; the impact of variable particle scattering properties.
In fact, intense training can produce sizeable upswings in MCT concentrations very rapidly.
For example, pets with hypertension or struvite urolithiasis should not be given water with high sodium or magnesium concentrations, respectively.
They grow as budding yeasts in anaerobic conditions but as mycelia in the presence of even low concentrations of oxygen.
Gases at high pressures fail to conform to Boyle's law, and solu tions at moderate concentrations give osmotic pressures which increase faster than the concentration.
To compile a database of background natural radionuclide concentrations in seafood.
In direct contrast, perfect replication of the membrane structure was achieved at low reagent concentrations.
The vasodilatory effect at low potassium concentrations is assumed in the model to occur primarily via the activation of inward rectifier potassium channels.
Both the absolute concentrations and the concentrations of these elements relative to each other change rapidly in the reef aquarium.
This research in the area of molecular biology, involved reporter assay methods to quantify gene expression and immunological techniques to measure protein concentrations.
Vegetables increase satiety and keep blood sugar concentrations steady so that the muscle building, fat burning process is n't interrupted.
Concentrations of siliceous plant remains may be higher in some areas not sampled for the Leverhulme Project, based on observations in the field.
There are significant emissions from sinter plants owing more to the large gas volumes emitted than to high concentrations.
Carbon dioxide at sufficient concentrations can inhibit the growth of spoilage molds.
Steady-state plasma concentrations are attained within 5 days of once daily dosing.
Exposures to sublethal concentrations of this gas may permanently damage the respiratory system.
The act also specifies maximum concentrations of lead and sulfur in motor fuel.
Recent environmental surveys along the Norwegian coast indicate a six-fold increase in technetium concentrations in seaweed since 1996.
The proportionally lower thallium concentrations reported for these baby foods compared with previous data on food probably results from the improved LOD.
When severe poisoning is suspected, the plasma theophylline concentration should be measured regularly, until concentrations are falling.
The mean serum cholesterol and triglyceride concentrations were not significantly changed within 3 months.
In well controlled add-on trials, no correlation has been demonstrated between trough plasma concentrations of topiramate and its clinical efficacy.
Apparently tupelo honey has the least concentrations of the sugars that have the greatest effect on blood sugar.
Strikingly low circulating CRP concentrations in ultramarathon runners independent of markers of adiposity - How low can you go?
However neonates require lower concentrations of volatile anesthetics than infants.
Peptides encompassing the EBNA 3C zipper domain are approximately 54 to 67% alpha-helical in solution but cannot form dimers at physiologically relevant concentrations.
Can be used by gasoline vehicles in the U.S. in concentrations up to 10 percent.
Can be used in specialized cars and trucks known as Flexible Fuel Vehicles in concentrations up to 85 percent.
Is used as an additive to gasoline in many states, in concentrations of up to 10 percent.
Ethanol can be used in all cars in low concentrations, such as 10% ethanol.
It can be used in specialized cars, trucks and minivans known as "flexible fuel vehicles" in concentrations up to 85% ethanol - commonly called "E85."
While these gases occur in lower atmospheric concentrations than carbon dioxide, they are substantially more potent.
Nearly all of the observed increase in temperature over the last 50 to 100 years is a direct result of increased levels of greenhouse gas concentrations in the atmosphere.
In fact, it has been shown in studies that acai has higher concentrations of antioxidants than any other food!
However, acai berries contain even higher concentrations of these desirable compounds and come with none of the associated risks of alcohol.
However, remember that fruit juice contains high concentrations of the fruit and subsequently high concentrations of fruit sugar.
In high concentrations, stevia can have an almost licorice-like aftertaste and it can be bitter.
Available in a variety of chemical concentrations depending on your level of discoloration.
The Michigan State University College of Education offers a Master of Arts in Education degree online with concentrations in special education, technology, school leadership, literacy, and science and mathematics education.
The University of Missouri Columbia's online offerings include a Master of Education degree with early childhood education, gifted education, literacy, and social studies concentrations.
Areas that have high concentrations of melanin are freckles and moles.
There are no majors and no concentrations.
In addition, many of the undergraduate degrees will offer "concentrations," such as "Communication and Technology" and "Sustainable Enterprise Management."
Division of Education offers an opportunity for students to earn unaccredited degrees in the areas of early childhood education, secondary education, and various other education concentrations.
Division of Basic Sciences and Engineering offers study concentrations in areas like biology and engineering.
Concentrations include Adult Education, Foundations of Education, and Instructional Technology.
Online bachelor's degree programs are more expansive with a wider range of concentrations and accompanying minors.
Most master's degrees include concentrations in specific areas of business, education, counseling and religious studies.
All ingredients are listed in order by weight, with the largest ingredient concentrations listed first.
Studies have shown that organic foods are not only lower in chemical pesticides, herbicides and fungicides, but they may also have higher concentrations of valuable nutrients.
A purified preparation of the allergen is inhaled or ingested in increasing concentrations to determine if it will provoke symptoms.
Children's acetaminophen contains low concentrations of the drug, 160 milligrams in a teaspoonful of solution.
A person with CF will have salt concentrations that are 1.5 to 2 times greater than normal.
Acute phase reactants-Blood proteins whose concentrations increase or decrease in reaction to the inflammation process.
Concentrations that are above the normal range can confirm the initial suspected diagnosis.
When used to assess the brain, it produces a three-dimensional image that shows anatomy and function, including such information as blood flow, oxygen consumption, glucose metabolism, and concentrations of various molecules in brain tissue.
Under normal circumstances, when heme concentrations are at an appropriate level, precursor production decreases.
Diagnosis usually requires a number of laboratory tests that measure concentrations of platelets and fibrinogen in the blood along with measuring prothrombin time.
Knowing this level may help doctors evaluate low concentrations of normal hemoglobin in red blood cells (anemia), as well as higher-than-normal levels of fetal hemoglobin or its hereditary persistence.
A powerful diuretic and fluids to restore normal sodium concentrations are administered rapidly at first.
In this test, PKU is confirmed by the appearance of bacteria growing around high concentrations of phenylalanine in the blood spot.
The following list gives the estimated amount of caffeine in common foods, but actual concentrations may be higher or lower.
Radioimmunoassay (a test to show concentrations of thyroid hormones with the use of a radioisotope mixed with fluid samples) helps confirm the diagnosis.
Children with type 1 VWD usually have normal to decreased RIPA concentrations.
Minoxidil is available in concentrations for both women and men.
Supporters of the green tea treatment claim that tea promotes hair growth as it influences blood concentrations of some of the hormones associated with hair growth.
Keep in mind that higher concentrations of chlorine gas can be produced when the chemicals in chlorine are mixed with water.
Chlorine kills bacteria very quickly, and is effective at low concentrations.
At higher concentrations, it can also kill algae.
It also contain high concentrations of soluble fiber.
Humans, as well as some animal species, can't synthesize this vitamin, but most plants can produce extremely high concentrations, especially citrus fruits.
Raw meats generally contain higher concentrations of these vitamins and may lose some during the cooking process.
There are three different concentrations of this oil at three different price points.
Since this color combines various concentrations of yellow and blue to achieve its hue, it looks great as an accessory with a variety of skin tones as well.
The corrosive nature of bleach can actually damage many surfaces if used in such high concentrations, but when it comes to health safety - replacing tile on a floor is preferable to spreading illness.
It is an antiseptic and oxidizing agent that can be found in a variety of concentrations.
Alpha hydroxy is also formulated in lower concentrations for daily home use.
Over-the-counter concentrations are typically found in 10 percent strength or less.
Physicians can prescribe benzoyl peroxide in higher concentrations, which may provide the effectiveness some acne sufferers need.
Used in high concentrations, vitamin C is said to encourage collagen growth and diminish the appearance of fine lines.
Children benefit from a 6 to 10 percent concentration of DEET, which is found in pediatric formulas, while adults may apply 30 to 50 percent concentrations.
It's now available over the counter in lower concentrations, but is still used, sometimes in conjunction with other chemicals, as a prescriptive.
A dermatologist uses chemical peel agents with much higher concentrations of acid, so unless you're really on a budget, it's probably a better option to visit a professional for the best results.
Specific acids in the alpha hydroxy family include glycolic and lactic acid, both of which are known to be gentle and non-irritating to skin when used in concentrations of 10 percent or less.
The Brazilian Peel contains one of the highest concentrations of glycolic acid available in an at-home peel, so it comes close to mimicking the results of a professional in-office peel.
For acids its value is usually rather less than for salts at equivalent concentrations.
A current can be obtained by the combination of two metals in the same electrolyte, of two metals in different electrolytes, of the same metal in different electrolytes, or of the same metal in solutions of the same electrolyte at different concentrations.