The influence of hydrogen ion concentration. Physiologia Plantarum, 6, 848-858. Olsen, C. (1954) Hvilke betingelser må være ... 2] Olsen, C. (1923) Studies on the hydrogen ion concentration of the soil and its significance to the vegetation, especially to ... Olsen, C. & Linderstrøm-Lang, K. (1927) On the accuracy of the various methods of measuring concentration of Hydrogen ions in ... Olsen, C. (1921) The concentration of hydrogen ions in the soil. Science 54 (1405), 539-541. [1] Olsen, C. (1921) The ecology ...
The concentration of hydrogen ions and pH are inversely proportional; in an aqueous solution, an increased concentration of ... A hydrogen ion is created when a hydrogen atom loses an electron. A positively charged hydrogen ion (or proton) can readily ... The hydrogen ion is recommended by IUPAC as a general term for all ions of hydrogen and its isotopes. Depending on the charge ... the ions produced by the reaction of these cations with water as well as their hydrates are called hydrogen ions: Hydronium ion ...
In 1923, she worked with Edna H. Fawcett to publish a paper concerning the hydrogen-ion concentration in culture mediums. Their ... Quirk, A.J. & Fawcett, E. H. (1923). Hydrogen-ion concentration vs. titratable acidity in culture mediums. Quirk, A.J. & Smith ... Agnes J. Quirk (1923). Hydrogen-ion concentration vs. titratable acidity in culture mediums. Retrieved 30 March 2012. "Norwich ...
Brandis K. "2.6 Regulation of Intracellular Hydrogen Ion Concentration". Acid-Base Physiology. Anaesthesia Education Website. ... Since the microelectrode has fluid with a high H+ concentration inside, relative to the outside of the electrode, there is a ... Intracellular pH is typically lower than extracellular pH due to lower concentrations of HCO3−. A rise of extracellular (e.g., ... Based on the ratio between the concentrations of protonated, compared to deprotonated, forms of phosphate compounds in a given ...
McClendon J. F. New hydrogen electrodes and rapid methods of determining hydrogen ion concentrations. Amer. J. Physiol., 1915, ... The hydrogen ion concentrations of the contents of the small intestine. J. of Biological Chemistry, Feb 19, 1918. XXXIV, No 1. ... McClendon J. F. A direct reading potenciometer for measuring hydrogen ion concentration. Amer. J. Physiol., 1915, 38, 2, 186. ... stomachs and duodenums of adults and infants plotted with the acid of imported methods of measuring hydrogen ion concentration ...
The hydrogen ion concentrations of the contents of the small intestine. Journal of Biological Chemistry, Feb 19, 1918. XXXIV, ...
Menten, M. L.; Crile, G. W. (1915). "Studies on the hydrogen-ion concentration in blood under various abnormal conditions". Am ... This relationship between reaction rate and enzyme-substrate concentration is known as the Michaelis-Menten equation. After ... but also that the rate of reaction rate increases to saturation as the substrate concentration increases. The constant K m {\ ... in terms of the substrate concentration a {\displaystyle a} and constants V {\displaystyle V} and K m {\displaystyle K_{\mathrm ...
1924 The Electrical Charge on a Clay Colloid as Influenced by Hydrogen-Ion Concentration and by Different Salts. With W. C. ... 1917 The Effect of Hydrogen and Hydroxyl Ion Concentration on the Growth of Barley Seedlings. Soil Sci., 3(6) :547-560. 1918 ... Arrhenius, O. (20 September 1922). "Absorption of nutrients and plant growth in relation to hydrogen ion concentration". ... Hydrogen-Ion Effects and the Accumulation of Salt by Barley Roots as Influenced by Metabolism. With T. C. Broyer. Am. J. Bot., ...
Thomas, A. W., & Kelly, M. W. (1923). The influence of hydrogen-ion concentration in the fixation of vegetable tannins by hide ... Thomas, A. W. (1920). Tabulation of hydrogen and hydroxyl ion concentrations of some acids and bases. Journal of the American ... Influence of hydrogen-ion concentration upon enzymatic activity of three typical amylases. Journal of the American Chemical ... Contrasting effects of chlorides and sulfates on the hydrogen-ion concentration of acid solutions. Journal of the American ...
Arrhenius, O. (1922). "Absorption of nutrients and plant growth in relation to hydrogen ion concentration". Journal of General ... In Arnon's revision of 1950, only one concentration (Mo 0.011 ppm) was changed compared to 1938 (Mo 0.048 ppm), while the ... The Hoagland solution, originally intended to imitate a (nutrient-) rich soil solution, has high concentrations of N and K so ... Due to relatively high concentrations in the aqueous stock solutions (cf. Tables 1 and 2) the Hoagland solution is very good ...
The sudden change of the indicator during a typical titration means, as is known, that the concentration of hydrogen ions in ... "hydrogen ion exponent" and the notation p H {\displaystyle p_{\mathrm {H} }} . By the hydrogen ion exponent ( p H {\ ... die colorimetrische Methode genannt." (There are still two procedures by which the hydrogen or hydroxyl ion concentration of a ... On the measurement and the importance of hydrogen ion concentration during enzymatic processes]. Biochemische Zeitschrift (in ...
Arnon, Daniel I.; Johnson, Clarence M. (1942). "Influence of hydrogen ion concentration on the growth of higher plants under ... Hydrogen ions have a single charge and one-thousandth of a gram of hydrogen ions per 100 grams dry soil gives a measure of one ... Plant nutrient availability is affected by soil pH, which is a measure of the hydrogen ion activity in the soil solution. Soil ... milliequivalent of hydrogen ion. Calcium, with an atomic weight 40 times that of hydrogen and with a valence of two, converts ...
The average concentration of hydrogen ions was 0.0001 milligrams per liter. The total concentration of nitrogen in the waters ... The concentration of hydrogen ions in the waters of Fishing Creek near Bloomsburg between 2002 and 2012 ranged from 0.00001 to ... The date of the lowest concentration of hydrogen ions at that location was on March 1 and July 16, 2003. The date of the ... highest concentration of hydrogen ions at the location on the creek was December 17, 2003. ...
McClendon J. F. New hydrogen electrodes and rapid methods of determining hydrogen ion concentrations. - Amer. J. Physoil., 1915 ...
"The Absorption of Water by Plant Tissue in Relation to External Hydrogen-Ion Concentration" (PDF). The Journal of Experimental ...
This results in decreased gastric acid secretion and gastric volume, and reduced hydrogen ion concentration. Ranitidine's acid- ...
Heathcote RS (1935). "Hexamine as an Urinary Antiseptic: I. Its Rate of Hydrolysis at Different Hydrogen Ion Concentrations. II ...
When the pH (or equivalent e.m.f., E).is measured, the free concentration of hydrogen ions, [H], is obtained from the measured ... Constant-boiling hydrochloric acid may also be used as a primary standard for hydrogen ion concentration. The most widely used ... A solution of known hydrogen ion concentration may be prepared by standardization of a strong acid against borax. ... With aqueous solutions the concentrations of proton (hydronium ion) and hydroxide ion are constrained by the self-dissociation ...
Redman, Thirza (1929). "The hydrogen ion concentration and the calcium and phosphorus content of the faeces of rachitic ...
... is the result of a process reducing hydrogen ion concentration of arterial blood plasma (alkalemia). In contrast to ... Compensatory mechanisms for this include release of hydrogen ion from tissue buffers and excretion of bicarbonate in the ... Metabolic alkalosis is usually accompanied by low blood potassium concentration, causing, e.g., muscular weakness, muscle pain ... It may also cause low blood calcium concentration. As the blood pH increases, blood transport proteins, such as albumin, become ...
In water the concentration of hydroxide is related to the concentration of hydrogen ions by the self-ionization constant, Kw. K ... The concentration, or activity, of the hydrogen ion is monitored by means of a glass electrode. The data set used for the ... Hence by following the hydrogen ion concentration during a titration of a mixture of M and HL with base, and knowing the acid ... Under conditions of equal copper concentrations and when then concentration of methylamine is twice the concentration of ...
... s are adapted to live in an environment where the hydrogen ion concentration is at equilibrium. They are sensitive ... to the concentration, and when the pH become too basic or acidic, the cell's proteins can denature. Depending on the microbe ...
pH meter, a tool that uses an electric current to determine the concentration of hydrogen ions in solution. Oxygen electrode, ... Litmus paper, disposable pH indicator strips that determine hydrogen ion concentrations by color changing chemical reaction. ... Acceptable concentrations for the individual nutrient ions, which comprise that total ppm figure, are summarized in the ... ions is used as a key parameter to estimate the remaining proportions and concentrations of other essential nutrient ions to ...
The borate-guar reaction is reversible, and depends on the pH (hydrogen ion concentration) of the solution. This reaction is ... Guar gum is often crosslinked with boron or chromium ions to make it more stable and heat-resistant. The crosslinking of guar ... Thus, it exhibits a great hydrogen bonding activity having a viscosifying effect in liquids. Guar is drought-tolerant and sun- ... PHGG as sold commercially is completely soluble, acid and heat stable, unaffected by ions, and will not gel at high ...
However, beyond this pH range, the effective hydrogen-ion activity changes much more rapidly than the concentration. This is ... concentration of 1012 mol/L, as measured by its ability to protonate weak bases. Although the Hammett acidity function is the ... which would imply an impossibly high H3O+ concentration of 10+12 mol/L in ideal solution). Instead it means that the acid ... because some of these reactions use acids in very high concentrations, or even neat (pure). The Hammett acidity function, H0, ...
Soil acidity (or alkalinity) is the concentration of hydrogen ions (H+) in the soil. Measured on the pH scale, soil acidity is ... If the concentration occurs repeatedly, the soil becomes cement-like, with little or no structure. Extended exposure to high ... In addition, this ion has negative effects on nitrifying microorganisms, thus affecting nutrient availability in the soil. ... In high levels, sodium ions break apart clay platelets and cause swelling and dispersion in soil. This results in reduced soil ...
The research measured the rate of bromite decomposition as a function of hydrogen and bromite ion concentrations. The ... Bromous acid is an intermediate stage of the reaction between bromate ion (BrO− 3 ) and bromine (Br−): BrO− 3 + 2 Br− → HBrO2 ...
Chemoreceptors in the body sense a change in partial pressures and pH (hydrogen ion concentration) in the blood. Chemoreceptors ... leading to lowered plasma calcium ions (Hypocalcaemia), causing increased nerve and muscle excitability. This explains the ...
La Mer, V. K.; Sherman, H. C.; Campbell, H. L. (1921). "The Effect of Temperature and of the Concentration of Hydrogen Ions ... Sherman, H. C.; La Mer, V. K.; Campbell, H. L. (1921). "The Effect of Temperature and of the Concentration of Hydrogen Ions ... LaMer, V. K.; Campbell, H. L.; Sherman, H. C. (1922). "The Effect of Temperature and the Concentration of Hydrogen Ions Upon ... La Mer, Victor K. (1921). The effect of temperature and hydrogen ion concentration upon the rate of destruction of the ...
1969). "Effect of hydrogen ion concentration and of temperature on the growth of Paracoccidioides brasiliensis in soil extract ...