Showing papers on "Potassium nitrate published in 1989"
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TL;DR: Results show that phosphate is an inhibitor of proteolytic activity.
83 citations
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TL;DR: The observed response of Elaeagnus toadded nitrate compared to other actinorhizal plants appears to demonstrate that root hair infected plants are much more sensitive to the inhibitory effects of added nitrate than plants infected by intercellular penetration.
Abstract: The response ofAlnus glutinosa, Casuarina cunninghamiana, Elaeagnus angustifolia andMyrica cerifera to a range of substrate nitrogen levels in solution, in relation to plant growth, infection, nodulation and root fine structure was studied. Nine concentrations of potassium nitrate ranging from 0.05 to 3.0 mM, were tested on each of the species. Plants were inoculated withFrankia pure cultures after a two week exposure to one of the nine levels of added nitrate. After six more weeks with constant exposure to nitrate, plants were harvested and assayed. With the exception of Myrica, regression analyses of whole plant dry weights as a function of added nitrate were highly significant. There was a tendency for nodulated plants grown at intermediate levels of added nitrate to exhibit higher relative growth rates, probably due to the additive effect of substrate nitrogen and fixation of atmospheric nitrogen. The mean numbers of nodules per plant were, with the exception of Alnus, significantly higher at intermediate levels of added nitrate, as were mean nodule dry weights. A highly significant inverse relationship between nodule weight as a percentage of whole plant weight was found in Elaeagnus and Myrica. The observed response of Elaeagnus to added nitrate compared to other actinorhizal plants appears to demonstrate that root hair infected plants are much more sensitive to the inhibitory effects of added nitrate than plants infected by intercellular penetration. A sharp reduction in the presence of root hairs at high concentrations of nitrate was observed. This indicates that the inhibition of nodulation in some actinorhizal plant species results from nitrate induced root hair suppression.
68 citations
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35 citations
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TL;DR: In this paper, the formation of permanent coatings of triphenyl-methane-type dyestuffs on high-performance liquid chromatographic-grade neutral polystyrene resins was described.
28 citations
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TL;DR: The enantiomers of the chiral 2,3-diphenyl- and 2, 3-11,12-tetraphenyl derivatives were obtained in single step reactions from readily available chiral precursors, (RR)- and (SS)-hydrobenzoins, followed by bulk isolations of the pure 18-crown-6 derivatives via their 1:1 crystalline complexes with potassium nitrate or calcium nitrate as mentioned in this paper.
17 citations
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15 citations
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TL;DR: In this paper, a tomato (Lvcopersicon esculentum mill) was grown in soil culture in a greenhouse and compared using biocides (nitrapymn, captan, treflan, and DDT) and an untreated control.
Abstract: Tomato (Lvcopersicon esculentum Mill.) was grown in soil culture in a greenhouse. Potassium nitrate, calcium nitrate, and urea as N sources were compared using biocides (nitrapymn, captan, treflan, and DDT) and an untreated control. The largest shoot growth and fruit yields were obtained with plants fertilized with potassium nitrate. Potassium deficiency, manifested by leaf and stem necrosis and low levels of K in these tissues, appeared to be a limiting factor for the plants receiving urea or calcium nitrate. The depression of leaf and stem K by NH4 + or Ca++ was associated with the antagonism of these ions on K+ absorption. The biocides limited plant growth especially with urea and potassium nitrate. Depression of K, Ca, or Mg concentrations in the plants were effects associated with the biocides and their interactions with N sources.
11 citations
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13 Jan 1989
TL;DR: A potassium inhibitive blend and corrosion protection method of closed cooling water systems is described in this article. But, it does not consider the effect of leakage of the circulated water and the leaked corrosion inhibitive liquid does not cause dangerous radiation.
Abstract: A potassium inhibitive blend and corrosion protection method of closed cooling water systems. The closed cooling system circulates about 35 to 40 gallons of corrosion inhibitor per 10,000 gallons of circulating water. The corrosion inhibitor contains potassium molybdate, potassium nitrite, and potassium borate in an aqueous solution so that if leakage of the circulated water occurs, the leaked corrosion inhibitive liquid does not cause dangerous radiation in any amounts dangerous to the environment. The potassium molybdate and potassium nitrate each constitute about 12% of the aqueous solution. Potassium based borate at 2 to 2.5%, ethylene glycol preferably at about 10%, and benzotriazole or tolyltriazole of about 0.4% with up to 1% polymeric scale suppressant are also included in the corrosion inhibitive blend.
9 citations
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9 citations
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TL;DR: A theoretical and experimental study of an AT-cut quartz crystal resonator as a sensor for viscous conductive liquids has been performed in this paper, where a novel continuous flow cell system and an 11 MHz quartz crystal were used for the experiments.
Abstract: A theoretical and experimental study of an AT-cut quartz crystal resonator as a sensor for viscous conductive liquids has been performed. A novel continuous-flow cell system and an 11 MHz quartz crystal were used for the experiments. Results are presented for aqueous dilute solutions of potassium chloride (KCl) and potassium nitrate (KNO3).
9 citations
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TL;DR: Gamma-ray induced decomposition of solid binary mixtures of KNO3 with halides viz. KCl, KBr and KI has been studied at room temperature.
Abstract: Gamma-ray induced decomposition of solid binary mixtures of KNO3 with halides viz. KCl, KBr and KI has been studied at room temperature. G(NO2−) values were found to vary with absorbed dose. Size and electronegativity of anions and molar composition of halides are the other factors influencing radiolysis.
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TL;DR: In this paper, a constant pressure molecular dynamics simulation was made for a simple ionic model for crystalline potassium nitrate at several pressures and temperatures which span the known phase diagram.
Abstract: Constant pressure molecular dynamics simulations have been made for a simple ionic model for crystalline potassium nitrate at several pressures and temperatures which span the known phase diagram. The nitrate ion was modeled as a rigid four‐site entity with distributed charges and a quaternion algorithm was used to solve the rotational equations of motion. Several structural features of KNO3 are reproduced in the simulations. The 300 K, 0.1 GPa aragonite‐like phase II of KNO3 has been reproduced although in the model it appears at a pressure between 1 and 2 GPa. The disordering of the nitrate orientations which occurs at high temperatures has also been observed. At 3 GPa the stable phase of the model is very similar to the recently characterized phase IV of KNO3. Spontaneous phase transitions in the simulations did not always produce well ordered structures and this appears to be a problem inherent in the method.
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TL;DR: Acinetobacter sp.
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TL;DR: In this paper, the critical gelation concentration (CGC) for the nitrate salts of lithium, sodium and potassium was examined and the pH of the suspensions was held constant at its point of maximum stability (pH = 5.85).
Abstract: Silica suspensions (CabOSil) can be made to gel without loss of water by adjusting the ionic strength of the suspension with inert electrolyte ions. In this paper we examine this critical gelation concentration (CGC) for the nitrate salts of lithium, sodium and potassium. The pH of the suspensions is held constant at its point of maximum stability (pH = 5.85) and the ionic strength was varied (0.01–0.263 M) to determine the CGC. All of the systems gelled through water evaporation without loosing more than 10% of their volume. While this small volume change results in less sensitivity in determining the CGC, it can be said that lithium, sodium and potassium ions show a lyotropic trend. When lithium, which is the largest hydrated ion tested, is the counter-ion, the sol loses more water before gelling than in the presence of sodium which in turn has to lose more water than when potassium is the counter-ion. A similar lyotropic trend was found in the cleaning of these sols before gelation and in the ability of the gels to retain their salts upon drying and calcination to 200°C without evidence of salt segregation.
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TL;DR: Etude de la double couche electrochimique d'une electrode en plomb dans une solution saline is described in this paper, where a solution of saline is used.
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TL;DR: The peritoneal membrane has been inferred to be anion selective and positively charged and the transference numbers of ions, charge density and permselectivity of the membrane-electrolyte system are calculated.
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25 Dec 1989
TL;DR: In this article, a durable cooling agent capable of keeping a low temperature state over a long time, securing a viscosity by gelation of the whole cooling agent and imparting a moderate flexibility when utilized for a cold reserving apparatus by mixing plural sorts of freezing mixtures with water and a high water-absorbing polymer.
Abstract: PURPOSE:To obtain a novel durable-type cooling agent capable of keeping a low temperature state over a long time, securing a viscosity by gelation of the whole cooling agent and imparting a moderate flexibility when utilized for a cold reserving apparatus by mixing plural sorts of freezing mixtures with water and a high water-absorbing polymer. CONSTITUTION:An objective cooling agent obtained by mixing (A) plural sorts of freezing mixtures composed of ammonium nitrate, ammonium chloride, potassium nitrate, salt, potassium carbonate, etc., with (B) (i) water and (ii) a high water-absorbing polymer consisting of a saponified vinyl acetate-acrylic ester copolymer, starch-acrylic acid graft copolymer, etc. In addition, an expanded material such as an expanded polystyrene and/or a thickener such as methyl cellulose is preferably blended therewith.
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23 Jul 1989
TL;DR: In this article, a solution of a mixture of sodium nitrate with potassium chloride is added to the solution of the initial mixture while heating, where the mixture is cooled for potassium nitrate crystallization and separated from recycled solution.
Abstract: FIELD: chemistrySUBSTANCE: invention relates to production of mineral salts and fertilizers and can be used for production of potassium nitrate Method of producing potassium nitrate involves converting a solution of a mixture of sodium nitrate with potassium chloride, where sodium nitrate is added to the solution of the initial mixture while heating Obtained mixture is cooled for potassium nitrate crystallization and separated from recycled solution After separation of potassium nitrate potassium chloride or mixture of potassium and sodium chlorides is added to solution Solution is evaporated to form sodium chloride crystals and separated from the recycled solution Reverse solution having molar ratio of Cl:NOions, equal to (10–40):(60–90), respectively, is directed to prepare initial mixture Mass fraction of chloride-ion in the finished product – potassium nitrate crystals is 01–036 %EFFECT: method enables to obtain potassium nitrate with minimum content of chloride impurities1 cl, 1 dwg, 1 tbl, 3 ex
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27 Sep 1989
TL;DR: Optical waveguides in lithium compound optoelectronic substrate material are defined by a two-stage process in this article, in which the first stage is selectively exposed to a proton source and such that hydrogen and lithium ions are exchanged.
Abstract: Optical waveguides in lithium compound optoelectronic substrate material are defined by a two-stage process In the first stage of this process the lithium compound substrate is selectively exposed to a proton source and such that hydrogen and lithium ions are exchanged In the second stage of this process, the substrate is immersed in a molten metal saft to define a stabilized region of higher refractive index Substrates of the lithium compound lithium niobate, may be treated by immersion in molten benzoic acid followed by immersion in a potassium salt, for example potassium nitrate
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28 Feb 1989
TL;DR: In this paper, a mixture of aminotetrazole and a proper amount of a vehicle (e.g., magnesium stearate) is used to obtain a clean gas generation agent capable of quickly and efficiently generating a gas having a composition close to air.
Abstract: PURPOSE:To obtain a clean gas generation agent capable of quickly and efficiently generating a gas having a composition close to air and suitable to be used in an emergency, etc., by compounding aminotetrazole with specific amounts of nitric acid Na salt, K salt or Ba salt and a proper amount of a vehicle. CONSTITUTION:A mixture is produced by mixing 57-77 pts.wt. of sodium nitrate with 43-23 pts.wt. of aminotetrazole or mixing 60-80 pts.wt. of potassium nitrate with 40-20 pts.wt. of aminotetrazole or mixing 58-78 pts.wt. of barium nitrate with 42-22 pts.wt. of aminotetrazole. The mixture is mixed with a proper amount of a vehicle (e.g. magnesium stearate) and formed to obtain the objective clean gas generation agent. When the agent is filled in a container and ignited in use, the reactions of formula I, formula II and formula III take place to generate a gas having a composition close to that of air.
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12 Oct 1989
TL;DR: A heat transfer liquid in the form of a molten salt mixture includes a mixture of potassium nitrate and lithium nitrate, and added calcium Nitrate and/or anhydrous salts if appropriate as discussed by the authors.
Abstract: A heat transfer liquid in the form of a molten salt mixture includes a mixture of potassium nitrate and lithium nitrate, and added calcium nitrate and/or anhydrous salts if appropriate. This is done in order to achieve a low melting point, a low toxicity and in particular a low viscosity. The heat transfer liquid may be used in the vulcanization of rubber.
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11 Apr 1989TL;DR: In this paper, the terminal fatigue characteristics of vacuum deposited phase-III potassium nitrate (KNO/sub 3/-III) ferroelectric memory devices are reported and it is concluded that the decrease in the polarization values after several million read/write cycles is probably due to the interfacial degradation at the gold/KNO sub 3/interface observed by Auger electron-spectroscopy techniques.
Abstract: The terminal fatigue characteristics of vacuum deposited phase-III potassium nitrate (KNO/sub 3/-III) ferroelectric memory devices are reported. It is concluded that the decrease in the polarization values after several million read/write cycles is probably due to the interfacial degradation at the gold/KNO/sub 3/ interface observed by Auger electron-spectroscopy techniques. >
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TL;DR: In this paper, the reaction of metallic sodium with a large excess of sodium and potassium nitrate salt mixtures was studied at temperatures up to 873 K. The reaction was exothermic, producing sodium nitrate, sodium oxide, and nitrogen gas.
Abstract: The reaction of metallic sodium with a large excess of sodium and potassium nitrate salt mixtures was studied at temperatures up to 873 K. Reactions were carried out in 316 stainless steel (316SS) vessels to ascertain the extent of corrosive action that would take place if a leak developed in a sodium-to-nitrate heat exchanger employed in a solar thermal, central receiver power plant. The reaction was exothermic, producing sodium nitrate, sodium oxide, and nitrogen gas. A black residue of chromium depleted steel was also found. Heat exchanger damage due to a pinhole leak was estimated by injecting sodium through 316SS capillary tubes immersed in the salt mixture at 873 K. To determine the extent of damage to adjacent material, experiments were designed so that the sodium, which was injected through the capillaries, impinged on INCOLOY® 800 or 316SS targets.
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09 Oct 1989
TL;DR: In this article, a vapor absorbing medium was proposed to obtain an excellent vapor absorbing performance in a absorbing medium and to make it possible to use it stably by using a medium to absorb vapor which includes at least one kind of nitrate selected from nitrates of alkali metal and nitrate of alkaline earth metal.
Abstract: PURPOSE:To obtain an excellent vapor absorbing performance in a absorbing medium and make it possible to use it stably by using a medium to absorb vapor which includes at least one kind of nitrate selected from nitrates of alkali metal and nitrates of alkaline earth metal. CONSTITUTION:As a vapor absorbing medium the water solution of a nitrate of alkali metal, water solution of alkaline earth metal, and the water solution of a mixture of a nitrate of alkali metal and nitrate of alkaline earth metal are used. As a nitrate of alkali metal lithium nitrate, sodium nitrate, and potassium nitrate are, for instance, used. As a nitrate of alkaline earth metal calcium nitrate, magnesium nitrate, strontium nitrate, etc. are, for instance, used. Those nitrates are used individually or in a combination of more than two nitrates. The vapor absorbing medium in the invention has not only an excellent vapor absorbing capability but also a very low corrosiveness for metal materials and it is used preferably as a working medium for vapor absorbing in a chemical heat pump of absorption type, its refrigerator, etc.
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18 Jan 1989
TL;DR: In this paper, the authors proposed a method to make the handling of the title combustion assistant safe and permit the combustion and removal of coke type hydrocarbon at a lower temperature, by a method wherein the weight ratio of a copper compound to a potassium compound is specified and the powder of silica or the like is made to exist in a specified ratio with respect to the total amount of both compounds.
Abstract: PURPOSE:To make the handling of the title combustion assistant safe and permit the combustion and removal of coke type hydrocarbon at a lower temperature, by a method wherein the weight ratio of a copper compound to a potassium compound is specified and the powder of silica or the like is made to exist in a specified ratio with respect to the total amount of both compounds. CONSTITUTION:The title combustion assistant is the physical mixture of powdered copper compound, selected from cuprous chloride, cupric chloride and copper nitrate, powdered potassium compound, selected from potassium chloride and/or potassium nitrate, and powder, selected from silica, alumina, silica alumina, zeorite and clay, and the weight ratio of the copper compound in the mixture to the potassium compound in the same is 5:95-90:10 while the powder of silica or the like is made to exist in the weight parts of 20-300 with respect to the total amount 100 weight parts of both compounds. When about 5-15weight% of hydrocarbon is absorbed and carried by the powder of silica or the like under the boiling point of about 350 deg.C or higher, igniting property and combustion property are further promoted. When rice powder, rice bran, wood powder or the like is blended into combustion assistant consisting of the mixture, it may serve to prevent the high-temperature fusing of the copper compound and the potassium compound.
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29 Mar 1989
TL;DR: In this article, a soda-lime silica glass is made to contact with a molten salt containing potassium ion to substitute the sodium ion in the surface layer of the glass with potassium ion and the product is heat-treated.
Abstract: PURPOSE:To obtain a glass article resistant to discoloration with radiation of electron ray, by contacting soda-lime silica glass with a molten salt containing K to substitute the Na in the surface layer of the glass with K and heat-treating the product. CONSTITUTION:A soda-lime silica glass is made to contact with a molten salt containing potassium ion to substitute the sodium ion in the surface layer of the glass with potassium ion and the product is heat-treated. The surface layer extending from the surface to the intrusion depth of the radiated electron ray has a Na2O/(Na2O+K2O) molar ratio of 0.4-0.65. When the K -containing molten salt is potassium nitrate, the molten salt is maintained preferably at 440-480 deg.C and is made to contact with the glass for preferably 0.5-4hr. The heat-treatment is preferably carried out at 440-480 deg.C for 1-10hr.
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16 Sep 1989
TL;DR: In this paper, a heat transfer fluid in the form of a molten salt mixture is proposed according to the invention, in order to achieve a low melting point, low toxicity and, in particular, low viscosity, that the salt mixture comprises a blend of potassium nitrate and lithium nitrate.
Abstract: In a heat transfer fluid in the form of a molten salt mixture, it is proposed according to the invention, in order to achieve a low melting point, low toxicity and, in particular, low viscosity, that the salt mixture comprises a blend of potassium nitrate and lithium nitrate and may contain added calcium nitrate.