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Academic literature on the topic 'Potassiumm'

Author: Grafiati

Published: 5 June 2025

Last updated: 24 June 2025

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Journal articles on the topic "Potassiumm"

Novkovic, L., M. Trmcic, M. Rodic, et al. "Synthesis of endoperoxides by domino reactions of ketones and molecular oxygen." RSC Advances 5, no. 120 (2015): 99577–84. http://dx.doi.org/10.1039/c5ra13476e.

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Nur, Rahmah Musa, Tandean Pendrik, Mappangara Idar, et al. "Electrocardiogram pattern pre and post potassium correction in hypokalemia." International Journal of Medical Reviews and Case Reports 3, no. 11 (2019): 711–16. https://doi.org/10.5455/IJMRCR.ecg-potassium-correction-hypokalemia.

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Background: Hypokalemia with ECG changes is very hazardous; therefore, it is important to correct hypokalemia to avoid life-threatening cardiovascular complications. Objective: To know ECG pattern pre and post potassium correction in patients with hypokalemia. Methods and results: A prospective study with longitudinal observational design in hospitalized hypokalemic patients who received intravenous potassium correction at Dr. Wahidin Sudirohusodo Hospital, Makassar during February - May 2018. ECG changes are determined based on ECG examination. Potassium correction is given based on potassium deficit formula. Data analysis used SPSS version 22 with McNemar and Chi Square statistical test. Study included 80 subjects consisting of 26 males and 54 females, mean age of 48,8 ± 16 years, 53,8% of moderate and 38,8% of severe hypokalemia, 85% having ECG changes. The ECG patterns were long QT (30%), prominent U (30%), T-inverted (21,2%), ST depression (15%), T-flat (10%), VES (6,3%), SVT (3,8%), first degree AVB (3,8%), and AF (2,5%). Significant improvement found in long QT and prominent U post correction (p<0.05). Decrease of post correction potassium levels, found 100% of prominent U and 75% of long QT became normal. Conclusion: The ECG patterns in hypokalemia are mostly long QT and prominent U. Potassium correction may provide an improvement in ECG patterns even if potassium levels still below the normal range.

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Wu, Peng, Zhong-Xiuzi Gao, Dan-Dan Zhang, Xiao-Tong Su, Wen-Hui Wang, and Dao-Hong Lin. "Deletion of Kir5.1 Impairs Renal Ability to Excrete Potassium during Increased Dietary Potassium Intake." Journal of the American Society of Nephrology 30, no. 8 (2019): 1425–38. http://dx.doi.org/10.1681/asn.2019010025.

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BackgroundThe basolateral potassium channel in the distal convoluted tubule (DCT), comprising the inwardly rectifying potassium channel Kir4.1/Kir5.1 heterotetramer, plays a key role in mediating the effect of dietary potassium intake on the thiazide-sensitive NaCl cotransporter (NCC). The role of Kir5.1 (encoded by Kcnj16) in mediating effects of dietary potassium intake on the NCC and renal potassium excretion is unknown.MethodsWe used electrophysiology, renal clearance, and immunoblotting to study Kir4.1 in the DCT and NCC in Kir5.1 knockout (Kcnj16−/−) and wild-type (Kcnj16+/+) mice fed with normal, high, or low potassium diets.ResultsWe detected a 40-pS and 20-pS potassium channel in the basolateral membrane of the DCT in wild-type and knockout mice, respectively. Compared with wild-type, Kcnj16−/− mice fed a normal potassium diet had higher basolateral potassium conductance, a more negative DCT membrane potential, higher expression of phosphorylated NCC (pNCC) and total NCC (tNCC), and augmented thiazide-induced natriuresis. Neither high- nor low-potassium diets affected the basolateral DCT’s potassium conductance and membrane potential in Kcnj16−/− mice. Although high potassium reduced and low potassium increased the expression of pNCC and tNCC in wild-type mice, these effects were absent in Kcnj16−/− mice. High potassium intake inhibited and low intake augmented thiazide-induced natriuresis in wild-type but not in Kcnj16−/− mice. Compared with wild-type, Kcnj16−/− mice with normal potassium intake had slightly lower plasma potassium but were more hyperkalemic with prolonged high potassium intake and more hypokalemic during potassium restriction.ConclusionsKir5.1 is essential for dietary potassium’s effect on NCC and for maintaining potassium homeostasis.

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Nam, Young Hee, Warren B. Bilker, Charles E. Leonard, Michelle L. Bell, and Sean Hennessy. "Outdoor temperature and survival benefit of empiric potassium in users of furosemide in US Medicaid enrollees: a cohort study." BMJ Open 9, no. 2 (2019): e023809. http://dx.doi.org/10.1136/bmjopen-2018-023809.

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ObjectiveHeat is associated with elevated all-cause mortality, and furosemide-induced potassium depletion might be worsened by heat-induced sweating. Because empiric potassium is associated with a marked survival benefit in users of furosemide at a dose of ≥40 mg/day, we hypothesised that this empiric potassium’s survival benefit would increase with higher temperature (≥24°C).DesignCohort study.SettingOutpatient setting, captured by Medicaid claims, supplemented with Medicare claims for dual enrollees, from 5 US states from 1999 to 2010, linked to meteorological data.Population/ParticipantsFurosemide (≥40 mg/day) initiators among adults continuously enrolled in Medicaid for at least 1 year prior to cohort entry (defined as the day following the dispensing day of each individual’s first observed furosemide prescription).ExposureInteraction between: (1) empiric potassium, dispensed the day of or the day following the dispensing of the initial furosemide prescription, and (2) daily average temperature and daily maximum temperature, examined separately.OutcomeAll-cause mortality.ResultsIn 1:1 propensity score matched cohorts (total n=211 878) that included 89 335 person-years and 9007 deaths, all-cause mortality rates per 1000 person-years were 96.0 (95% CI 93.2 to 98.9) and 105.8 (95% CI 102.8 to 108.9) for potassium users and non-users, respectively. The adjusted OR of all-cause mortality for potassium use declined (ie, its apparent protective effect increased) as temperature increased, from a daily average temperature of about 28°C and a daily maximum temperature of about 31°C. This relationship was not statistically significant with daily average temperature, but was statistically significant with daily maximum temperature (p values for the interaction of potassium with daily maximum temperature and daily maximum temperature squared were 0.031 and 0.028, respectively).ConclusionsThe results suggest that empiric potassium’s survival benefit among furosemide (≥40 mg/day) initiators may increase as daily maximum temperature increases. If this relationship is real, use of empiric potassium in Medicaid enrollees initiating furosemide might be particularly important on hot days.

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Qiu, Peng, Haohong Chen, Hanzhi Zhang, et al. "Hard Carbon as Anodes for Potassium-Ion Batteries: Developments and Prospects." Inorganics 12, no. 12 (2024): 302. http://dx.doi.org/10.3390/inorganics12120302.

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Potassium-ion batteries (PIBs) are regarded as a potential substitute for LIBs owing to the benefits of potassium’s abundance, low cost, and high safety. Nonetheless, the practical implementation of potassium-ion batteries still encounters numerous challenges, with the selection and design of anode materials standing out as a key factor impeding their progress. Hard carbon, characterized by its amorphous structure, high specific surface area, and well-developed pore structure, facilitates the insertion/extraction of potassium ions, demonstrating excellent rate performance and cycling stability. This review synthesizes the recent advancements in hard carbon materials utilized in PIB anodes, with a particular focus on the potassium storage mechanism, electrochemical properties, and modification strategies of hard carbon. Ultimately, we present a summary of the current challenges and future development directions of hard carbon materials, with the objective of providing a reference for the design and optimization of hard carbon materials for PIBs.

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Miyagishi, Shigeyoshi, Hiroshi Suzuki, and Tsuyoshi Asakawa. "Microviscosity and Aggregation Number of PotassiumN-Acylalaninate Micelles in Potassium Chloride Solution." Langmuir 12, no. 12 (1996): 2900–2905. http://dx.doi.org/10.1021/la950554t.

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Dhol, S. R., P. M. Gami, R. C. Khunt, and A. R. Parikh. "Design, Synthesis and Characterization of Novel Arylamides Containing 1,2,4-triazole Nuclei for Possible Antimicrobial Activity." E-Journal of Chemistry 1, no. 5 (2004): 228–30. http://dx.doi.org/10.1155/2004/240397.

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Diphenyl aceto hydrazide on reaction with carbon disulfide and potassium hydroxide gave potassiumα,α-diphenyl acetamido dithiocarbamate, which on cyclisation with hydrazine hydrate yielded key intermediate 3-mercapto-4,N-amino-5-benzhydryl-1,2,4-triazoles. The key intermediate on condensation with different acid chloride afforded our titled compounds. The synthesised compounds have been confirmed elemental analyses and further supported by spectral data. All the synthesised compounds have been evaluated for theirin vitroin vitro antimicrobial activity.

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Andrews, Ellie M., Sire Kassama, Evie E. Smith, Patrick H. Brown, and Sat Darshan S. Khalsa. "A Review of Potassium-Rich Crop Residues Used as Organic Matter Amendments in Tree Crop Agroecosystems." Agriculture 11, no. 7 (2021): 580. http://dx.doi.org/10.3390/agriculture11070580.

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Ecosystem-based approaches to nutrient management are needed to satisfy crop nutrient requirements while minimizing environmental impacts of fertilizer use. Applying crop residues as soil amendments can provide essential crop nutrient inputs from organic sources while improving nutrient retention, soil health, water conservation, and crop performance. Tree crop hulls, husks, and shells have been found to contain high concentrations of potassium across species including almond, cacao, coffee, pecan, and hazelnut. The objective of this review is to characterize organic sources of potassium focusing on lignocellulosic pericarps and discuss reported effects of surface application on potassium cycling, water dynamics, soil functionality, and crop yield. Research indicates potassium ions solubilize readily from plant material into soil solution due to potassium’s high mobility as a predominately unbound monatomic cation in plant tissues. Studies evaluating tree crop nutshells, field crop residues, and forest ecosystem litter layers indicate this process of potassium release is driven primarily by water and is not strongly limited by decomposition. Research suggests orchard floor management practices can be tailored to maximize the soil and plant benefits provided by this practice. Contextual factors influencing practice adoption and areas for future study are discussed.

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Hopkins, W. F., J. L. Miller, and G. P. Miljanich. "Voltage-gated Potassium Channel Inhibitors." Current Pharmaceutical Design 2, no. 4 (1996): 389–96. http://dx.doi.org/10.2174/1381612802666220925203618.

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Forty years have transpired since tetraethylammonium was first used to selectively inhibit the potassiuin conductance in squid axons. Since then, a large body of work has emerged describing inhibitors of voltage-gated potassium currents in a variety of cells. The advent of molecular cloning techniques and the cloning of the potassium channel encoded by the Shaker locus in Drosophila has enabled detailed structure function studies of several potassium channel subunits. These breakthroughs have also recently enabled studies of the "toxinology" and pharmacology of specific potassium channel subunits expressed heterologously in Xenopus oocytes and other cells. Here we describe the results of some of those efforts, focusing in particular on our work with four members of the Shaker subfamily of potassium channel a-subunits: Kvl.1 through Kvl.4. These subunits are expressed in the central nervous system and other tissues of rodents, and are highly homologous to corresponding subunits expressed in humans. We provide a profile of potency and selectivity for.five snake dendrotoxins as well as several scorpion toxins for these potassium channel subunits expressed in Xenopus oocytes. We also provide similar data for four other peptide toxins and several nonpeptide compounds that had previously been shown to inhibit potassium currents. We discuss several potential clinical applications of potassium channel inhibitors, including demyelinating diseases such as multiple sclerosis, immunosuppression, cardiac arrhythmias, neurodegenerative and psychiatric diseases. Further progress will require, among other things, a greater understanding of the expression patterns of potassium channel subunits in the CNS and elsewhere as well as knowledge of the specific subunit composition of heteromultimeric channels.

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Roeva, Tatyana, and Elena Leonicheva. "The effect of mineral fertilizers on the seasonal dynamics of exchangeable potassium in the orchard soil and the potassium status of sour cherry trees." BIO Web of Conferences 36 (2021): 04001. http://dx.doi.org/10.1051/bioconf/20213604001.

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The study was conducted to assess the impact of mineral fertilizers applied to the soil on the potassium level in the components of the “soil-plant” system of the sour cherry orchard. The experiment was conducted in the forest-steppe zone of the Central Russian Upland (Orel region) on loamy Haplic Luvisol during 2018-2020. The seasonal dynamics of exchangeable potassiumin the soil, the potassium status and productivity of sour cherry trees cv. ‘Turgenevka’ on the rootstock V-2-180 were studied in the orchard of 2015 planting. Fertilizers in the form of (NH2)2CO and K2SO4 were applied annually in early spring in doses of N30K40, N60K80, N90K120 and N120K160. It was found that a significant decrease in the level of potassium in the soil occurred during the period of intensive growth and crop formation, or after heavy precipitation. The use of fertilizers increased the content of exchangeable potassium in the soil (by 1.2-2.2 times), while the features of the potassium dynamics observed in unfertilized plots were preserved. Fertilizers contributed to the annual improvement of the potassium status of the leaves (by 0.05-0.24 % DW). The positive effect of fertilizers on the potassium content in fruits and the productivity of trees was manifested only in a year with prolonged intense precipitation (2020). The potassium content in fruits was 1.12-1.16 times higher than the control when applying N30K40, N60K80 and N90K120. A significant increase of tree productivity was found when applying N60K80 and N120K160 (by 54 and 69%, respectively).

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Dissertations / Theses on the topic "Potassiumm"

Canadell, i. Sala David. "Potassium starvation responses in yeast highlight novel potassium-related functions." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/298180.

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Mantenir la homeòstasis de cations és essencial per la supervivència dels éssers vius, i en especial pels organismes unicel·lulars. El llevat Saccharomyces cerevisiae s’ha utilitzat al llarg dels anys com un organisme model per l’estudi del conjunt de processos que controlen els nivells intracel·lulars de cations. El potassi és el principal catió intracel·lular del llevat i està involucrat en diversos processos de la fisiologia d'aquest organisme. Per aquest motiu la seva homeòstasis està minuciosament controlada per un seguit de transportadors que permeten la seva captació, distribució intracel·lular i eliminació de la cèl·lula i per un conjunt de proteïnes reguladores d’aquests processos. Encara que es té constància de la rellevància del potassi en el llevat, les seves dianes específiques i les bases moleculars d’algunes de les seves funcions són poc conegudes. En aquest treball, mitjançant aproximacions d’eliminació del potassi del medi de cultiu, s’han pogut determinar els mecanismes d’algunes de les funcions conegudes del potassi i descobrir-ne de noves. S’ha demostrat que la manca de potassi provoca profundes alteracions en el perfil transcripcional del llevat. Entre elles destaquen l’accentuada repressió del gens que codifiquen proteïnes ribosomals i elements necessaris per la síntesi del ribosoma, dotant d’explicació molecular al ja conegut bloqueig en la síntesi de proteïnes provocat per la manca de potassi. L’eliminació del potassi del medi també provoca una caiguda dels nivells dels aminoàcids cisteïna i metionina que condueix a una activació del gens relacionats amb el metabolisme del sulfat i la síntesi d’aminoàcids sulfurats. Igualment, la privació del potassi comporta una acumulació d’espècies reactives de l’oxigen que produeixen un estat d’estrès oxidatiu a la cèl·lula. Aquesta respon amb l’activació transcripcional dels gens necessaris per combatre l’estrès oxidatiu, eliminar els oxidants i retornar la cèl·lula a un correcte estat redox. El llevat creixent en un medi sense potassi i en presència d’amoni acumula grans quantitats d’amoni a l’interior cel·lular a través del transportador de potassi Trk1 aprofitant la similitud química d’ambdós cations. Aquesta acumulació d’amoni activa vies per la seva fixació i eliminació en forma d’aminoàcids com és la via retrograda mitocondrial. L’eliminació del potassi del medi atura la proliferació cel·lular. Els nostres resultats han demostrat que aquesta aturada podria ser deguda a la disminució de les ciclines i d’elements reguladors de la formació dels anells de septines que afecten la progressió del cicle cel·lular. El potassi també l’hem relacionat amb la homeòstasi d’un nutrient essencial com és el fosfat. L’absència de potassi o la pertorbació de la entrada normal d’aquest catió indueix els gens involucrats en la obtenció i mobilització del fosfat, d’igual manera com ho faria la depleció o limitació del fosfat. En aquetes condicions, la resposta transcripcional d’aquets gens està regulada pels diferents elements que composen la via PHO. L’afectació en l’obtenció del potassi impacte en la normal homeòstasis del fosfat provocant la mobilització de les reserves emmagatzemades en forma de polifosfats. La limitació del potassi, però, no modifica els nivells de fosfat lliure intracel·lular però sí que provoca una caiguda del nivells d’ATP i d’ADP, que podrien ser el senyal d’activació de la via PHO. A més, la pertorbació de la homeòstasis del potassi afecta el creixement dels llevats en medis amb baixos nivells de fosfat. El conjunt de dades obtingudes en aquest treball ha permès descobrir nous vincles entre la homeòstasis del potassi i diversos processos cel·lulars, a més de la connexió d’aquest catió amb la homeòstasis de nutrients com el nitrogen, el sulfat i el fosfat.<br>The maintenance of cation homeostasis is essential for the survival of all living organisms and especially for microorganisms. The yeast Saccharomyces cerevisiae has been used over the years as a model organism for study the processes that control intracellular cation levels. Potassium is the major intracellular cation in yeast and it has been associated with various relevant cellular processes. For this reason, potassium homeostasis is tightly controlled by several transporters, that allow the cation uptake, intracellular traffic and efflux, and by a set of proteins regulating these processes. In spite of the importance of potassium for yeast physiology, not all relevant functional potassium-related targets have been identified. In this work, potassium starvation conditions are used to determine the mechanisms of some of the known potassium functions and to discover new ones. We show that lack of potassium causes major alterations in the transcriptional profile of yeast cells. These transcriptional changes include the marked repression of genes encoding ribosomal proteins and elements necessary for the synthesis and assembly of ribosomes, providing the molecular basis for previously observed halt in protein synthesis caused by potassium deprivation. The elimination of potassium from the medium also causes a drop in cysteine and methionine levels which lead to transcriptional activation of genes related to metabolism of sulfate and biosynthesis of sulfur-contain amino acids. Similarly, cells deprived for potassium accumulate reactive oxygen species which results in oxidative stress. Concomitantly, cells trigger the transcriptional activation of genes necessary to combat oxidative stress, eliminate oxidants and return cells to the proper redox state. Yeast cells growing on ammonium as nitrogen source but lacking potassium accumulate large amounts of intracellular ammonium, which is transported through Trk1 taking advantage of the chemical similarity of both cations. Ammonium accumulation activates the retrograde mitochondrial pathway, resulting in detoxification of ammonium by its integration into amino acids. The complete removal of potassium from the medium leads to growth arrest. Our results show that this arrest could be due to the decrease in cyclins levels and in proteins involved in the assembly of septin rings, elements that are necessary for cell cycle progression. We also have related potassium to the homeostasis of other essential nutrients such as phosphate. Depletion of potassium from the medium or disturbance of normal potassium uptake induces genes involved in the acquisition and release of phosphate, as it is usually observed in a situation of phosphate starvation. Under these conditions, the transcription of PHO-controlled genes is activated by different regulatory elements of the PHO pathway. Situations that impact on normal potassium homeostasis also cause mobilization of the phosphate reserves stored in form of polyphosphates. Potassium restrictions, however, does not alter the levels of intracellular free phosphate but it causes a drop in the levels of ATP and ADP, which could be the signal for the activation of the PHO pathway. In addition, on media with low levels of phosphate, disruption of normal potassium homeostasis effects yeast growth. The results obtained in this work have been crucial to uncover new links between potassium homeostasis and many important cellular processes, in particular establishing the link between the homeostasis of this cation with that of other essential nutrients such as nitrogen, sulfate, and phosphate.

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Young, Bradford Kenneth Guertal Elizabeth A. "Potassium movement and uptake as affected by potassium source and placement." Auburn, Ala, 2009. http://hdl.handle.net/10415/1575.

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Bailey, Matthew Alexander. "Studies in renal cation transport in potassium replete and potassium-depleted rats." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264703.

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Alfaro, Marta Andrea. "Potassium balances in grassland systems : does nitrogen affect potassium cycling and leaching?" Thesis, University of Reading, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252256.

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Lee, Kai-lok. "The contribution of KATP channels to potassium release into the interstitial space during skeletal muscle contractions /." View the Table of Contents & Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38347647.

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Salomon, Eva. "Availability of potassium to clover and grass from soils with different potassium fertilization histories /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5459-X.pdf.

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Stansfield, Phillip James. "Molecular modelling of potassium channels." Thesis, University of Leicester, 2007. http://hdl.handle.net/2381/29963.

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This study uses the structural coordinates of the determined K+ channels to create comparative models of three diverse members of this family, with the aim of enabling a better understanding of the function of these channels. The K+ channel of primary interest is the hERG K+ channel. The pharmacology of this channel is of considerable interest as serendipitous block of K+ conduction pore may result in cardiac arrest. A set of known antagonists have been docked into novel comparative models of hERG to propose how these drugs interact with the channel. The models have also been subjected to molecular dynamics simulations to investigate the drug binding in more detail and to gain a structural understanding of two critical biophysical properties of this channel: activation and inactivation. Additionally, ancillary domains of the channel have been modelled to provide a tool for interpreting detailed structure-function relationships for the hERG channel. The second channel investigated is the TASK-1 channel. Comparative models of this channel have been created to evaluate mutations that alter selectivity and pH sensitivity. The final K+ channel studied is the Kir2.1 channel. A fundamental property of this channel is its block by polyamines, which prevents the efflux of K+. Comparative models have been created, with a series of polyamine analogues docked into the membrane and cytoplasmic pore regions of this channel. Overall, this study has illuminated the structural basis of several biophysical properties that are intrinsic to normal K+ channel function.

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Chan, Brenda Kit Ching. "Reaction of potassium with carbons." Thesis, University of Newcastle Upon Tyne, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316091.

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Viriyatum, Rawee Boyd Claude E. "Potassium fertilization of bluegill ponds." Auburn, Ala., 2009. http://hdl.handle.net/10415/1940.

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Podesta, M. de. "Helicon wave studies in potassium." Thesis, University of Sussex, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370431.

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Books on the topic "Potassiumm"

E, Wesson Donald, ed. Potassium. Libra & Gemini Publications, 1992.

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Adrogué, Horacio J. Potassium. Blackwell Scientific, 1994.

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Lippiat, Jonathan D., ed. Potassium Channels. Humana Press, 2009. http://dx.doi.org/10.1007/978-1-59745-526-8.

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Shyng, Show-Ling, Francis I. Valiyaveetil, and Matt Whorton, eds. Potassium Channels. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7362-0.

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Furini, Simone, ed. Potassium Channels. Springer US, 2024. http://dx.doi.org/10.1007/978-1-0716-3818-7.

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D, Munson Robert, American Society of Agronomy, and Potash & Phosphate Institute (Atlanta, Ga.), eds. Potassium in agriculture. American Society of Agronomy, 1985.

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1881-1968, Klemm Wilhelm, and United States. National Aeronautics and Space Administration., eds. Potassium cuprate (III). National Aeronautics and Space Administration, 1988.

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Gamper, Nikita, and KeWei Wang, eds. Pharmacology of Potassium Channels. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-84052-5.

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Perrenoud, S. Potassium and plant health. 2nd ed. International Potash Institute, 1990.

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Colloquium, International Potash Institute. Potassium in ecosystems: Biogeochemical fluxes of cations in agro- and forest-systems : 23rd Colloquium of the International Potash Institute, Prague, Czechoslovakia, October 12-16, 1992. The Institute, 1992.

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Book chapters on the topic "Potassiumm"

Seel, F., Ralph G. Czerepinski, and George H. Cady. "Potassium Fluorosulfite: (Potassium Fluorosulfinate)." In Inorganic Syntheses. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470132401.ch29.

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Satlin, Lisa M. "Potassium." In Pediatric Nephrology. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-76341-3_8.

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Arevalo, Ricardo. "Potassium." In Encyclopedia of Earth Sciences Series. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39193-9_132-1.

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Arevalo, Ricardo. "Potassium." In Encyclopedia of Earth Sciences Series. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-39312-4_132.

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Bährle-Rapp, Marina. "potassium." In Springer Lexikon Kosmetik und Körperpflege. Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_8250.

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White, Philip J., and Alison J. Karley. "Potassium." In Plant Cell Monographs. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10613-2_9.

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Sawyer, A. K. "Potassium." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145258.ch46.

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Sawyer, A. K. "Potassium." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145258.ch51.

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Sawyer, A. K. "Potassium." In Inorganic Reactions and Methods. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470145258.ch54.

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Gooch, Jan W. "Potassium." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9310.

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Conference papers on the topic "Potassiumm"

Zhou, B., K. Wu’, and Z. Xiang. "Terahertz Wave Driven Potassium Channel Permeability Regulation." In 2024 IEEE International Conference on Plasma Science (ICOPS). IEEE, 2024. http://dx.doi.org/10.1109/icops58192.2024.10625904.

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Osborne, Christine. "Infrastructure Corrosion Protection in Mineral Processing and Power Generation: Spotlight on Potassium Silicate Materials and Applications." In CORROSION 2012. NACE International, 2012. https://doi.org/10.5006/c2012-01141.

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Abstract Mineral processors and power generators have relied on inorganic potassium silicate brick mortars, structural polymer concretes, and gunite linings to protect infrastructure and equipment against the ravages of corrosion. While resistant to strong organic, mineral, and oxidizing acids, potassium silicate materials contain silica, making them ill-suited for use in fluoride acid service. Owing to the materials’ characteristic properties, structures and linings constructed from these materials are designed differently than those constructed of organic polymer composites. This paper presents an introduction to the capabilities and limitations of potassium silicate materials, examples of their use in the aforementioned industries, and insight into design features unique to the structures and linings in which they are used.

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Muztahidul, Islam Md, Tatsunori Kamiya, Satoshi Tsuruta, et al. "Development of Potassium Ion Sensor with Integrated Striped Gate Electrodes into Membrane for Long-Term Soil Potassium Ion Monitoring." In 2024 IEEE SENSORS. IEEE, 2024. https://doi.org/10.1109/sensors60989.2024.10785011.

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Williams, R., A. Kisor, M. Ryan, B. Jeffries-Nakamura, S. Kikkert, and D. O'Connor. "Potassium beta-double-prime-alumina/ potassium/ molybdenum electrochemical cells." In Intersociety Energy Conversion Engineering Conference. American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-3833.

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Izutani, Natsuko. "Recipe for potassium." In ORIGIN OF MATTER AND EVOLUTION OF GALAXIES 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4763429.

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Barkan, A., T. K. Hunt, and B. Thomas. "Potassium AMTEC Cell Performance." In 34th Intersociety Energy Conversion Engineering Conference. SAE International, 1999. http://dx.doi.org/10.4271/1999-01-2702.

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Zhang, J. W., S. Wang, S. L. Yang, X. Chen, W. J. Wei, and L. H. Li. "Laboratory Study on the Strength Deterioration Characteristics of Solid Potash Ore Samples in Moist Environment." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0306.

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ABSTRACT: Potassium salt rock is a typical discontinuous heterogeneous material formed naturally, which is mainly composed of carnallite, sylvite, halite and so on. Potassium salt is widely used in various industry fields (such as agriculture, chemical industry, medicine, metallurgy, electroplating, printing and dyeing, glass, etc.) and has a large demand. One of the important sources is the mining of solid potassium salt mines. Through the laboratory test of solid potassium salt ore samples obtained from an underground potassium salt mine in a mine in Laos, various mechanical parameter data of potassium salt ore deformation and failure can be obtained intuitively and effectively, so as to provide theoretical and data basis for the design of specific engineering parameters such as pillar strength calculation and size optimization. In this paper, the large potassium salt ore obtained from the underground mining site of a potassium salt mine in Laos was cut and cored, and the cylinder and disc standard specimens of the potassium salt rock were obtained. By simulating the underground moist environment under different humidity conditions, potassium salt cylinder specimens with different water contents were prepared in the laboratory. Then, the uniaxial compressive strength test and other indoor tests were carried out on these potassium salt specimens, and the test results were obtained and analyzed in depth. The results show that the potassium salt ore sample exhibits typical plastic rheological properties under the condition of unconfined uniaxial compression, and its uniaxial compressive strength in the natural state is roughly between 6.7MPa -9.3MPa; and within a certain range of water content, the uniaxial compressive strength of potash ore samples gradually decreases with the increase of water content. Through the analysis of strength deterioration characteristics of solid potash ore, it can provide scientific guidance for the optimization of pillar size in underground mining of solid potassium salt ore with different moist environments, and then lay a theoretical foundation for improving the underground mining recovery rate of potassium salt ore and reducing the waste of resources. 1. INTRODUCTION Potassium salt is a non-metallic mineral with potassium chloride and sulfate minerals as the main components (Bai et al., 2014). The main potassium salt minerals are sylvite, carnallite, potassium magnesium alum, anhydrous potassium magnesium alum, polyhalite, potassium magnesium alum, soft potassium magnesium alum and so on. In its raw state, potassium salt is an important industrial and agricultural mineral, which has important economic value, (Cheng, 2007). It is mainly used as potassium fertilizer, which is an important agricultural fertilizer resource and one of the three essential fertilizers for crops. Therefore, it is of great significance to study the mining of underground solid potash ore.

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Chen, Xinyang, Brian Beard, Clark Johnson, and Xin-Yuan Zheng. "Experimental constraints on potassium isotope fractionation between potassium solutions and clay minerals." In Goldschmidt2021. European Association of Geochemistry, 2021. http://dx.doi.org/10.7185/gold2021.8194.

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Wen, Xinrong, and Changqing Tu. "Determination of Potassium Iodate in Edible Salt by Potassium Iodide-Iodine-Starch System." In International Conference on Biotechnology and Biomedicine. SCITEPRESS - Science and Technology Publications, 2022. http://dx.doi.org/10.5220/0012012100003633.

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SHAMSULLAH, J. A., and B. A. HAMID. "EFFECT OF POTASSIUM SOURCE, HUMIC ACID AND IRRIGATION WATER SALINITY ON SOME PHYSIOLOGICAL TRAITS, GROWTH AND YIELD OF BROCCOLI." In VIII.International ScientificCongressofPure,AppliedandTechnological Sciences. Rimar Academy, 2023. http://dx.doi.org/10.47832/minarcongress8-11.

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A field experiment was carried out in the season 2020-2021 in a field site in AlDora/Baghdad area in a clay mixture under the Type Torrfluvent group, on broccoli plant. Potassium sulfate was formed in three concentrations (0, 60, 120) Kg K ha-1 and irrigated with two types of irrigation water (river and well) under the drip irrigation system. The results showed a significant increase of potassium sources on the leaf area. The treatment of fertilization with potassium sulfate was superior at the second level. (HS2) in the values of leaf area (40.66) cm2. The interaction between potassium sources and salinity of irrigation water was also recorded, and the highest value was recorded when treatment (S1HS2) was (66.86) cm2. A significant decrease in leaf area was recorded with the increase in salinity of irrigation water (S2) (24.08). ) cm2, and the results of the research indicated a significant increase of potassium sources in the percentage of chlorophyll in the leaves. The treatment of fertilization with potassium sulfate at the second level (HS1) was superior to the values of chlorophyll (1.23) mg liter-1. The interaction between potassium sources and salinity of irrigation water was also recorded. The highest value was observed when treatment (S2HS1) was (1.06) mg liter-1, and there was a significant increase in biological yield and economic yield due to potassium sources. The treatment of fertilizing with potassium sulfate at the level (HS) was (1530.5) gm plant-1 and (20.2) ton ha-1 for both biological yield and economic yield, respectively. Also, the interaction between potassium sources and irrigation water salinity recorded the highest value when treatment (S1HS1) and it was (2033) gm plant-1 and (23.8) ton ha-1 for both biological yield and economic yield Respectively and there was a significant increase in the potassium content in the plant due to potassium sources.

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Reports on the topic "Potassiumm"

Knight, R. D., B. A. Kjarsgaard, E G Potter, and A. Plourde. Uranium, thorium, and potassium analyses using pXRF spectrometry. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328973.

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The application of portable XRF spectrometry (pXRF) for determining concentrations of uranium (U), thorium (Th) and potassium (K) was evaluated using a combination of 12 Certified Reference Materials, 17 Standard Reference Materials, and 25 rock samples collected from areas of known U occurrences or mineralization. Samples were analysed by pXRF in Soil, Mining Cu/Zn and Mining Ta/Hf modes. Resulting pXRF data were compared to published recommended values, obtained by total or near total digestion methods with ICP-MS and ICP-OES analysis. Results for pXRF show a linear relationship, for thorium, potassium, and uranium (&amp;lt;5000 ppm U) as compared to the recommended concentrations. However, above 5000 ppm U, pXRF results show an exponential relationship with under reporting of pXRF concentrations compared to recommended values. Accuracy of the data can be improved by post-analysis correction using linear regression equations for potassium and thorium, and samples with &amp;lt;5000 ppm uranium; an exponential correction curve is required at &amp;gt;5000 ppm U. In addition, pXRF analyses of samples with high concentrations of uranium (e.g. &amp;gt;1 wt.% U) significantly over-estimated potassium contents as compared to the published values, indicating interference between the two elements not calibrated by the manufacturer software.

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Rupke, Andrew. Estimates of Lithium, Magnesium, and Potassium Resources in Great Salt Lake Brine. Utah Geological Survey, 2025. https://doi.org/10.34191/ofr-769.

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Understanding the available mineral resources in Great Salt Lake brine is an important component to managing these resources into the future. This study examined the in-place resource, or mass, of three economically important ions held within the brine: lithium, magnesium, and potassium. Interest in Great Salt Lake’s lithium has risen in recent years with society’s increased use of lithium in batteries, and magnesium and potassium have long been extracted from the lake. Using the Utah Geological Survey’s Great Salt Lake brine chemistry database, which contains data from 1966 to the present, the resources of these ions held within the lake brine were calculated over time. This study estimates that the in-place lithium resource in Great Salt Lake brine, based on recent sampling, averages about 410,000 metric tons, which is comparable to other recent studies. Notably, the average lithium resource estimate from the 1990s is similar to the recent average; however, a gap in lithium concentration data exists from 1999 through 2018 so a continuous comparison is not possible. An examination of brine withdrawals by mineral operations indicates that roughly 200,000 tons of lithium may have been removed from Great Salt Lake via extractive processes for other commodities from 1988 through 2021 (although some of this lithium remains available to the overall Great Salt Lake system in evaporation ponds). Given the apparent minimal resource change from the 1990s to recently, some recharge of lithium to the lake brine is likely occurring through surface or groundwater inflow. The average estimates of in-place resources of magnesium and potassium in the lake brine since 2011 are 91 million metric tons and 57 million metric tons, respectively. The resources of magnesium and potassium also show limited change since around 2000, suggesting that those resources may also be recharging to some degree.

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Evans, Dean R. A New Type of Potassium Niobate Crystal: Utilizing the Potassium Sites (Preprint). Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada473932.

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Baumann, Hilary Beatrix. Potassium dihydrogen phosphate and potassium tantalate niobate pyroelectric materials and far-infrared detectors. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10109402.

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Mallarino, Antonio P., Pedro A. Barbagelata, and Kevin Van Dee. Potassium Fertilization Effects on Soil-Test Potassium and Yields of Corn and Soybeans. Iowa State University, Digital Repository, 2005. http://dx.doi.org/10.31274/farmprogressreports-180814-2687.

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Buckle, J. L., J. M. Carson, K. L. Ford, R. Fortin, and W F Miles. Radioactivity map of Canada, potassium. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/293360.

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Ruangpornvisuti, Vithaya. A study of protonation and deprotonation of the novel amino acids : the compounds of aspartic acids : research repor. Chulalongkorn University, 1997. https://doi.org/10.58837/chula.res.1997.16.

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Acidity and basicity constants of N-acetylaspartic acid, aspartic acid, aspartylaspartic acid, Asp-Asp-Asp, Asp-Asp-Asp-Asp, Asp-Asp-Asp-Asp-Asp and Asp-Asp-asp-Asp-Asp-Asp were determined in 0.1 M potassium nitrate at 25 degree celsius, by means of potentiometric titration. Acidity constants of N-acetylaspartic acid are log K1 = -3.41 and log K2 = -5.13. Basicity constants, expressed as log K, of aspartic acid (asp) and polyaspartic acids (asp)n ; when n=2 to 6, are 9.80 and 8.79, 8.34, 8.50, 8.56 and 8.99 respectively. The number of acidity constant of polyaspartic acids (asp)n is equal to n+1 that is equivalent to the number of carboxylic acid in molecule. The pI’s of aspartic acid, aspartylaspartic acid, Asp-Asp-Asp, Asp-Asp-Asp-Asp, Asp-Asp-Asp-Asp-Asp และ Asp-Asp-Asp-Asp-Asp-Asp in aqueous solution of 0.1 M potassium nitrate at 25 degree celsius are 3.1, 3.3, 3.1, 2.8, 2.7 and 2.4 respectively.

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Mallarino, Antonio P., Matthew William Clover, and David Rueber. Potassium Fertilization Rate Effects on Soil-Test Potassium and Yields of Corn and Soybeans. Iowa State University, Digital Repository, 2007. http://dx.doi.org/10.31274/farmprogressreports-180814-2730.

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Smith, J. R. Acid-permanganate oxidation of potassium tetraphenylboron. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10145622.

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Takacs, T. J., and M. E. Johnson. Alternatives for sodium-potassium alloy treatment. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10195025.

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