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Journal articles on the topic 'K Plasma Ratio'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Fajda, Oleksandra I., Oleksandr V. Drach, Liliya G. Barylyak, and Walery Zukow. "Relationships between Ca/K plasma ratio and parameters of heart rate variability at patients with diathesis urica." Journal of Education, Health and Sport 6, no. 1 (2016): 295–301. https://doi.org/10.5281/zenodo.45359.

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<strong>Fajda Oleksandra I., Drach Oleksandr V., Barylyak Liliya G., </strong><strong>Zukow W</strong><strong>alery. Relationships between Ca/K plasma ratio and parameters of heart rate variability at patients with diathesis urica. </strong><strong>Journal of Education, Health and Sport. </strong><strong>2016;6(1):295-301. eISSN 2391-8306. DOI</strong> <strong>http://dx.doi.org/10.5281/zenodo.45359</strong> <strong>http://ojs.ukw.edu.pl/index.php/johs/article/view/3368</strong> <strong>https://pbn.nauka.gov.pl/works/710817</strong>       <strong>The journal has had 7 points in M

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Adu-Gyamfi, Clement, Dana Savulescu, Lillian Mikhathani, et al. "Plasma Kynurenine-to-Tryptophan Ratio, a Highly Sensitive Blood-Based Diagnostic Tool for Tuberculosis in Pregnant Women Living With Human Immunodeficiency Virus (HIV)." Clinical Infectious Diseases 73, no. 6 (2021): 1027–36. http://dx.doi.org/10.1093/cid/ciab232.

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Abstract Background For pregnant women living with human immunodeficiency virus (HIV), concurrent active tuberculosis (TB) disease increases the risk of maternal mortality and poor pregnancy outcomes. Plasma indoleamine 2,3-dioxygenase (IDO) activity measured by kynurenine-to-tryptophan (K/T) ratio has been proposed as a blood-based TB biomarker. We investigated whether plasma K/T ratio could be used to diagnose active TB among pregnant women with HIV. Methods Using an enzyme-linked immunosorbent assay (ELISA), we measured K/T ratio in 72 pregnant women with and active TB and compared them to

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3

Avison, M. J., S. R. Gullans, T. Ogino, G. Giebisch, and R. G. Shulman. "Measurement of Na+-K+ coupling ratio of Na+-K+-ATPase in rabbit proximal tubules." American Journal of Physiology-Cell Physiology 253, no. 1 (1987): C126—C136. http://dx.doi.org/10.1152/ajpcell.1987.253.1.c126.

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A combination of 23Na nuclear magnetic resonance (NMR) spectroscopy and a K+-selective electrode was used to make simultaneous measurements of net Na+ and K+ fluxes across plasma membranes of rabbit renal proximal tubules after an abrupt stimulation of Na+-K+-ATPase. After a step in extracellular K+ concentration ([K+]o) from low to higher concentration (0.1-0.3 mM to 0.5-5.2 mM) at 25 degrees C, net extrusion of Na+ and uptake of K+ were observed. These fluxes were completely inhibited by ouabain (10(-3) M). Because initial rates of K+ uptake in presence or absence of Ba2+ (a known inhibitor

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Sadre, M., H. P. Sheng, M. Fiorotto, and B. L. Nichols. "Electrolyte composition changes of chronically K-depleted rats after K loading." Journal of Applied Physiology 63, no. 2 (1987): 765–69. http://dx.doi.org/10.1152/jappl.1987.63.2.765.

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The responses of whole body, skeletal muscle, and plasma to oral K loading were studied in K-depleted male rats. Potassium depletion was induced by feeding the rats a K-deficient diet for 4 wk and injecting deoxycorticosterone acetate during the first week. After 4 wk, the rats were growth retarded and hypokalemic (1.9 mmol/l plasma) and had low whole-body and muscle K content, 188 +/- 27 and 276 +/- 19 mmol/kg fat-free dried tissue (FFDT), respectively, compared with 296 +/- 10 and 454 +/- 13 mmol/kg FFDT for the control group. Sodium and water retention also occurred in the K-deficient group

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Liliane, Simpson-Louredo. "ACTH Level and Sodium-Potassium Ratio in Screening of Primary Canine Hypoadrenocorticism." International Journal of Veterinary Science and Research 3, no. 1 (2017): 023–24. https://doi.org/10.17352/ijvsr.000018.

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This article describes a primary hypoadrenocorticism (HA) case report in a spayed mix-breeded German shepherd ten years old female dog that had unspecifi c symptoms during a week. The initial suspicious were poisoning and after, renal insuffi ciency, since laboratorial exams demonstrated azotemia.In both cases, the treatment were unsuccessfully. After laboratory exams and blood sodium: potassium ratio (Na: K) measure (23:1), the presumptive diagnosis was primary HA, that it was confi rmed by plasma adrenocorticotropic hormone (ACTH) level (280 pg/mL). Although the gold standard test to confirm

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Hong, Jong Woo, Hyun Woo Tak, Young Hun Choi, Hee Jung Kim, Dong Woo Kim, and Geun Young Yeom. "Etch Characteristics of Low-K Materials Using CF₃I/C₄F₈/Ar/O₂ Inductively Coupled Plasmas." Science of Advanced Materials 14, no. 7 (2022): 1258–64. http://dx.doi.org/10.1166/sam.2022.4312.

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In this study, pulsed CF3I/C4F8/Ar/O2 inductively coupled plasmas have been studied for low-k etching, and the effects of CF3I addition to C4F8/Ar/O2 on the plasma characteristics and etch characteristics of low-k materials were investigated. The increased ratio of CF3I/(CF3I+C4F8) in the gas mixture increased CF3 radicals while decreasing CF2 radicals in the plasma, and which are related to the etching and polymerization, respectively. Therefore, the etch rates of SiCOH increased with increasing the CF3I ratio. However, the etch selectivity over an amorphous carbon layer and photoresist was t

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Fatah, Kamaran, Anders Hamsten, Birger Blombäck, and Margareta Blombäck. "Fibrin Gel Network Characteristics and Coronary Heart Disease: Relations to Plasma Fibrinogen Concentration, Acute Phase Protein, Serum Lipoproteins and Coronary Atherosclerosis." Thrombosis and Haemostasis 68, no. 02 (1992): 130–35. http://dx.doi.org/10.1055/s-0038-1656337.

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SummaryThe native fibrin gel structure formed in vitro from plasma samples was examined by liquid permeation of the hydrated fibrin gel networks in 18 men who had suffered a myocardial infarction before the age of 45 years and in 20 control subjects. Patients with an elevated plasma fibrinogen concentration had a considerably lower fibrin gel porosity (permeability coefficient, K s) compared with patients with a normal plasma fibrinogen level and with controls. The calculated fiber mass-length ratio of the fibrin gel networks was decreased in both patient groups. Gel porosity differed markedly

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Lee, Jong Woo, Hyoun Woo Kim, Jeong Whan Han, et al. "Plasma Etching for the Application to Low-K Dielectrics Devices." Materials Science Forum 555 (September 2007): 113–18. http://dx.doi.org/10.4028/www.scientific.net/msf.555.113.

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We present a study of the photoresist (PR) etching and the low-k materials damage using a ferrite-core inductively coupled plasma (ICP) etcher, in order to develop an etching process for the low-k dielectric devices. We reveal that the N2/O2 flow ratio and bias power affected the PR etching rate. By Fourier transform infrared spectroscopy and HF dipping test, we investigated the effect of the gas flow ratio and bias power on the amount of etching damage to the low-k material.

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Cinieri, Giacomo, Ghazanfar Mehdi, and Maria Grazia De Giorgi. "Multiscale Modeling of Plasma-Assisted Non-Premixed Microcombustion." Aerospace 11, no. 9 (2024): 697. http://dx.doi.org/10.3390/aerospace11090697.

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This work explores microcombustion technologies enhanced by plasma-assisted combustion, focusing on a novel simulation model for a Y-shaped device with a non-premixed hydrogen-air mixture. The simulation integrates the ZDPlasKin toolbox to determine plasma-produced species concentrations to Particle-In-Cell with Monte Carlo Collision analysis for momentum and power density effects. The study details an FE-DBD plasma actuator operating under a sinusoidal voltage from 150 to 325 V peak-to-peak and a 162.5 V DC bias. At potentials below 250 V, no hydrogen dissociation occurs. The equivalence rati

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Rabinowitz, L., R. L. Sarason, and H. Yamauchi. "Effect of aldosterone on potassium excretion during potassium chloride infusion in sheep." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 249, no. 4 (1985): R455—R461. http://dx.doi.org/10.1152/ajpregu.1985.249.4.r455.

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Experiments were performed on normal mature ewes to quantitate the effect of acute variations in aldosterone activity on renal K excretion. Six-hour clearance studies were performed on three sheep. Treatments were control (no infusion), infusion of KCl (140 meq in 2 h) alone or with superimposed infusions of aldosterone (20 micrograms/h), or infusion of aldosterone antagonist potassium canrenoate (100 mg/h). During KCl infusion there were simultaneous increases in plasma K, K excretion, and Na excretion. Aldosterone treatment diminished the increase in plasma K and in Na excretion but increase

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11

Daugirdas, J.-T. "The post: pre-dialysis plasma urea nitrogen ratio to estimate K·t/V and NPCR: mathematical modeling." International Journal of Artificial Organs 12, no. 7 (1989): 411–19. https://doi.org/10.1177/039139888901200702.

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The mathematical basis of the relationship between K· t/V and the ratio of the postdialysis (C t ) to predialysis (C o ) plasma urea nitrogen levels (C t /C o = R) is the urea kinetic model. The R vs. K· t/V relationship is modulated by the patient's normalized protein catabol-ic rate (NPCR), the dialysis session length, and the predialysis plasma urea nitrogen level, due to urea generated during the dialysis session; the latter increases C, and hence raises R. The relationship between R and K·t/V is also affected by the amount of ultrafiltrate removed during the dialysis session, because conv

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Daugirdas, J. T. "The post: pre dialysis plasma urea nitrogen ratio to estimate K·t/V and NPCR: validation." International Journal of Artificial Organs 12, no. 7 (1989): 420–27. https://doi.org/10.1177/039139888901200703.

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The ability of empirical formulae to predict K· t/V based on the ratio (R) of the postdialysis (C t ) to predialysis (C 0 ) plasma urea nitrogen levels was tested. In 256 patients, 336 three-point modeling sessions were performed. The K· t/V and NPCR were derived by in-terative solution of equations for V and G according to the variable volume single-pool model. The modeled K· t/V values were compared to K· t/V predicted from the formula: K· t/V= - In (R - 0.008 ·t - UF/W), where R is the C t /C 0 ratio, t the session length (h), UF the ultrafiltrate volume (liters) and W the postdialysis weig

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van den Besselaar, Antonius M. H. P., and Christa M. Cobbaert. "Assignment of international normalized ratio to frozen and freeze-dried pooled plasmas." Clinical Chemistry and Laboratory Medicine (CCLM) 58, no. 12 (2020): 2089–97. http://dx.doi.org/10.1515/cclm-2019-1321.

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AbstractObjectivesFrozen and freeze-dried plasmas may be used for local prothrombin time system calibration, for direct international normalized ratio (INR) determination, and for quality assessment. The purpose of the present study was to evaluate the usefulness of INRs assigned with various types of thromboplastins to frozen and freeze-dried pooled plasmas obtained from patients treated with vitamin K antagonists.MethodsINRs were calculated according to the international sensitivity index (ISI) model using various thromboplastins and instruments, i.e. International Standards for thromboplast

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Novakovic, Nadezda, S. M. Stojilkovic, and Dragan Gajic. "Wiedemann-Franz ratio in plasmas in the mixtures of xenon, argon and cesium." Facta universitatis - series: Physics, Chemistry and Technology 3, no. 1 (2004): 1–6. http://dx.doi.org/10.2298/fupct0401001n.

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In the present paper, the xenon plasmas containing argon and cesium as additive and pertaining to the above mentioned type (high-pressure low-temperature, LIE) are studied, and a theoretical evaluation of their basic transport parameters is presented. The numerical calculations were based on the assumption that the system is kept under constant pressure and temperature and that it attained local thermo dynamical equilibrium. Some results of a theoretical study which embraced numerical evaluations of the plasma composition, electron collision frequency, electrical and thermal conductivities and

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McKenna, M. J., T. A. Schmidt, M. Hargreaves, L. Cameron, S. L. Skinner, and K. Kjeldsen. "Sprint training increases human skeletal muscle Na(+)-K(+)-ATPase concentration and improves K+ regulation." Journal of Applied Physiology 75, no. 1 (1993): 173–80. http://dx.doi.org/10.1152/jappl.1993.75.1.173.

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This study investigated the effects of sprint training on muscle Na(+)-K(+)-adenosinetriphosphatase (ATPase) concentration, plasma [K+] regulation, muscle performance, and fatigue during severe intermittent exercise. Six untrained male subjects underwent intensive cycle-sprint training for 7 wk. Muscle biopsies were taken at rest from the vastus lateralis muscle before and after 7 wk of training and were assayed for Na(+)-K(+)-ATPase concentration using vanadate-facilitated [3H]ouabain binding to intact samples. Before and after the training period, subjects performed four maximal 30-s exercis

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Roy, Soumya, and Durgesh Tripathi. "Evolution of the Ratio of Mg ii Intensities during Solar Flares." Astrophysical Journal 964, no. 2 (2024): 106. http://dx.doi.org/10.3847/1538-4357/ad2a46.

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Abstract The Mg ii k and h line intensity ratios can be used to probe the characteristics of the plasma in the solar atmosphere. In this study, using the observations recorded by the Interface Region Imaging Spectrometer, we study the variation of the Mg ii k and h intensity ratio for three flares belonging to X-class, M-class, and C-class, throughout their evolution. We also study the k-to-h intensity ratio as a function of magnetic flux density obtained from the line-of-sight magnetograms recorded by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. Our results re

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Zheng, Dan, Anjana Perianayagam, Donna H. Lee, et al. "AMPK activation with AICAR provokes an acute fall in plasma [K+]." American Journal of Physiology-Cell Physiology 294, no. 1 (2008): C126—C135. http://dx.doi.org/10.1152/ajpcell.00464.2007.

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AMP-activated protein kinase (AMPK), activated by an increase in intracellular AMP-to-ATP ratio, stimulates pathways that can restore ATP levels. We tested the hypothesis that AMPK activation influences extracellular fluid (ECF) K+ homeostasis. In conscious rats, AMPK was activated with 5-aminoimidazole-4-carboxamide-1-beta-d-ribofuranoside (AICAR) infusion: 38.4 mg/kg bolus then 4 mg·kg−1·min−1 infusion. Plasma [K+] and [glucose] both dropped at 1 h of AICAR infusion and [K+] dropped to 3.3 ± 0.04 mM by 3 h, linearly related to the increase in muscle AMPK phosphorylation. AICAR treatment did

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ZICHA, JOSEF, CERVANTES D. NEGRIN, ZDENA DOBEŠOVÁ, et al. "Altered Na+-K+ pump activity and plasma lipids in salt-hypertensive Dahl rats: relationship to Atp1a1 gene." Physiological Genomics 6, no. 2 (2001): 99–104. http://dx.doi.org/10.1152/physiolgenomics.2001.6.2.99.

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A genetic variant of the gene for the α1-isoform of Na+-K+-ATPase ( Atp1a1) was suggested to be involved in the pathogenesis of salt hypertension in Dahl rats through altered Na+:K+ coupling ratio. We studied Na+-K+ pump activity in erythrocytes of Dahl salt-sensitive (SS/Jr) rats in relation to plasma lipids and blood pressure (BP) and the linkage of polymorphic microsatellite marker D2Arb18 (located within intron 1 and exon 2 of Atp1a1 gene) with various phenotypes in 130 SS/Jr × SR/Jr F2 rats. Salt-hypertensive SS/Jr rats had higher erythrocyte Na+ content, enhanced ouabain-sensitive (OS) N

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Crabtree, Kyle N., and Benjamin J. McCall. "The ortho : para ratio of H 3 + in laboratory and astrophysical plasmas." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370, no. 1978 (2012): 5055–65. http://dx.doi.org/10.1098/rsta.2012.0016.

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In diffuse molecular clouds, the nuclear spin temperature of (approx. 30 K) is much lower than the cloud kinetic temperature (approx. 70 K). To understand this temperature discrepancy, we have measured the ratio of the hop to exchange pathways ( α ) in the reaction (which interconverts ortho- and para- ) using high-resolution spectroscopy of the ν 2 fundamental band of in a hydrogenic plasma. We find that α decreases from 1.6±0.1 at 350 K to its statistical value of 0.5±0.1 at 135 K. We use this result to model the steady-state chemistry of diffuse molecular clouds, finding good agreement with

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Azharuddin, Mohammed K., Denis St J. O’Reilly, Andrew Gray, and Dinesh Talwar. "HPLC Method for Plasma Vitamin K1: Effect of Plasma Triglyceride and Acute-Phase Response on Circulating Concentrations." Clinical Chemistry 53, no. 9 (2007): 1706–13. http://dx.doi.org/10.1373/clinchem.2007.086280.

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Abstract Background: The plasma concentration of vitamin K1 (phylloquinone) is the most reliable index for assessing vitamin K status. Our aim was to analytically validate an HPLC method for quantifying phylloquinone in plasma and to examine the effect of plasma triglyceride concentration on the phylloquinone reference interval. We also examined the effect of acute-phase response on phylloquinone concentration in plasma. Methods: Phylloquinone was extracted from fasting plasma samples by deproteinization and C18 solid-phase extraction, separated by reversed-phase HPLC, and detected fluorometri

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Chaudhry, M. B., and M. D. Tahir. "Ion- and electron-acoustic waves in sheet plasmas." Journal of Plasma Physics 41, no. 2 (1989): 281–87. http://dx.doi.org/10.1017/s0022377800013866.

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Ion-acoustic waves in sheet plasmas, which are of thickness of order of the ion Larmor radius ρi, have been investigated numerically. The frequency range considered is less than the ion cyclotron frequency ωci. An integral equation in wavenumber space is derived from the linearized Vlasov-Poisson equations and analysed numerically. Eigenfrequencies and eigenfunctions of the wave have been studied systematically by varying the plasma thickness, plasma density, electron-to-ion temperature ratio and parallel wavenumber. Electron-acoustic waves are found when the parallel wavenumber is very small

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JIANG, H. C., W. L. ZHANG, Z. C. CHEN, W. X. ZHANG та B. PENG. "EFFECTS OF OXYGEN CONTENT ON THE TRANSPORT PROPERTIES OF La0.7Ca0.3MnO3-δ THIN FILMS". Surface Review and Letters 14, № 05 (2007): 899–902. http://dx.doi.org/10.1142/s0218625x0701041x.

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We report the effects of oxygen content on the transport properties of La 0.7 Ca 0.3 MnO 3-δ thin films grown epitaxially on LaAlO 3 (001) substrates by RF magnetron sputtering. The as-deposited thin films were annealed and treated by oxygen plasma to improve the oxygen content. We observe that the La 0.7 Ca 0.3 MnO 3-δ films annealed at 850°C is highly oriented growth on (001) LAO substrate. However, the XRD patterns of the samples annealed at lower than 850°C show no distinct diffraction peaks. This evidence indicates that the samples annealed at lower than 850°C are still amorphous or nanoc

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Wang, Peir-Jyh, Chin-Ching Tzeng, and Yan Liu. "Thermal Temperature Measurements of Plasma Torch by Alexandrite Effect Spectropyrometer." Advances in Optical Technologies 2010 (August 18, 2010): 1–7. http://dx.doi.org/10.1155/2010/656421.

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An alexandrite effect spectropyrometer is used to directly measure the thermal temperature of an argon gas plasma jet from a 100 kW DC plasma torch, and the directly measured thermal temperature of the plasma is K. By using the spectral correction function to delete the spectral lines and to correct its underlying spectrum of the relative spectral power distribution of the plasma jet, the remaining continuum spectral power distribution represents the thermal spectral emission of the plasma jet. The calculated thermal temperature of the corrected relative continuum spectral power distribution b

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Castells, Antoni, Pere Puig, Josefina Móra, et al. "K-ras Mutations in DNA Extracted From the Plasma of Patients With Pancreatic Carcinoma: Diagnostic Utility and Prognostic Significance." Journal of Clinical Oncology 17, no. 2 (1999): 578. http://dx.doi.org/10.1200/jco.1999.17.2.578.

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PURPOSE: Previous studies have demonstrated the presence of K-ras mutations in the plasma of patients with pancreatic carcinoma. However, the diagnostic utility and the prognostic significance of this finding have never been addressed. PATIENTS AND METHODS: Forty-four consecutive patients with histologically confirmed primary pancreatic ductal adenocarcinoma were included. A control group of 37 patients with chronic pancreatitis, 10 patients with other tumors of the pancreatic area, nine patients with acute pancreatitis, and four healthy volunteers was also included. Plasma DNA was isolated an

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Lenders, Jacques W. M., Jacques J. Willemsen, Theo Beissel, Peter W. C. Kloppenborg, Theo Thien, and Theo J. Benraad. "Value of the plasma norepinephrine/3,4-dihydroxyphenylglycol ratio for the diagnosis of pheochromocytoma." American Journal of Medicine 92, no. 2 (1992): 147–52. http://dx.doi.org/10.1016/0002-9343(92)90105-k.

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Levy, Jerrold H., Kenichi A. Tanaka, and Wulf Dietrich. "Perioperative Hemostatic Management of Patients Treated with Vitamin K Antagonists." Anesthesiology 109, no. 5 (2008): 918–26. http://dx.doi.org/10.1097/aln.0b013e3181895bd8.

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Clinicians, including anesthesiologists, surgeons, and intensivists, are frequently called on to correct coagulopathy in patients receiving oral anticoagulation therapy. Before elective surgery, anticoagulation reversal may be undertaken over several days by discontinuing warfarin or vitamin K treatment, but rapid correction is required in an emergency. European and American guidelines recommend prothrombin complex concentrates (PCCs) for anticoagulation reversal in patients with life-threatening bleeding and an increased international normalized ratio. Compared with human fresh frozen plasma,

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Vijayan, M., J. Morgan, T. Sakamoto, E. Grau, and G. Iwama. "Food-deprivation affects seawater acclimation in tilapia: hormonal and metabolic changes." Journal of Experimental Biology 199, no. 11 (1996): 2467–75. http://dx.doi.org/10.1242/jeb.199.11.2467.

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We tested the hypothesis that nutritional state affects seawater acclimation by transferring either fed or food-deprived (2 weeks) male tilapia (Oreochromis mossambicus) from fresh water to full-strength sea water. Food-deprivation resulted in a significant increase in plasma concentrations of Na+, Cl-, cortisol, glucose, total amino acid, glutamate, serine and alanine, and in hepatic pyruvate kinase (PK) and lactate dehydrogenase (LDH) activities, whereas the prolactin-188 to prolactin-177 ratio (tPRL188:tPRL177) and plasma prolactin-188 (tPRL188), lactate, arginine and hepatic glycogen conte

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Park, Min Kyu, Wan Soo Song, Min Ho Kim, and Sang Jeen Hong. "Surface Analysis of TMCTS-Based SiOC(H) Low-k Dielectrics in Post-Etch Strip of ACL Hardmask." Materials 14, no. 5 (2021): 1144. http://dx.doi.org/10.3390/ma14051144.

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The miniaturization of devices requires the introduction of a high aspect ratio through patterning in the Damascene copper interconnect process. The high aspect ratio etch process employs hardmasks, such as amorphous carbon, that can withstand high-powered plasma exposure. When an etch hardmask is removed after patterning, the properties of the underlying film can be altered by the effect of plasma exposure during the strip process. In this study, surface properties of SiOC(H) are investigated after an amorphous carbon strip with O2/Ar plasma. Since the low-k film of SiOC(H) structure shows ch

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Kurniati, Roza, Dwitya Elvira, and Rido Wandrivel. "The Differences in Indoleamine 2,3-dioxygenase 1 Plasma Activity of HIV-Positive Pulmonary Tuberculosis and HIV-Negative Pulmonary Tuberculosis." Bioscientia Medicina : Journal of Biomedicine and Translational Research 6, no. 14 (2022): 2634–38. http://dx.doi.org/10.37275/bsm.v6i14.659.

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Background: Tuberculosis is the most common cause of death in HIV patients. Indoleamine 2,3-dioxygenase 1 (IDO1) is an enzyme that plays a crucial role in the immune response to TB and HIV infection. Increased plasma IDO1 activity in TB patients can be a promising marker for the diagnosis of TB, especially in HIV patients. This study aimed to evaluate the differences in the activity of indoleamine 2,3-dioxygenase 1 plasma of HIV-positive pulmonary TB with HIV-negative pulmonary TB patients. Methods: This study is an analytic observational study. Plasma IDO1 activity was assessed by calcu

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Efremov, Alexander M., Alexander V. Bobylev, and Kwang-Ho Kwon. "PLASMA PARAMETRS AND SILICON ETCHING KINETICS IN CF4 + C4F8 + O2 MIXTURE: EFFECT OF CF4/C4F8 MIXING RATIO." ChemChemTech 67, no. 6 (2024): 29–37. http://dx.doi.org/10.6060/ivkkt.20246706.6982.

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In this work, we investigated the influence of fluorocarbon component ratio in the CF4 + C4F8 + O2 gas mixture on electro-physical plasma parameters, steady-state densities of active species and silicon etching kinetics under typical reactive-ion process conditions. The combination of plasma diagnostics (double Langmuir probes, optical emission spectroscopy) and plasma modeling confirmed known peculiarities of plasma chemistry of individual fluorocarbons in the presence of oxygen as well as provided an extended analysis of both fluorine and oxygen atom kinetics in the three-component gas mixtu

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Riad, F., J. Lefaivre, C. Tournaire, and J. P. Barlet. "Aldosterone regulates salivary sodium secretion in cattle." Journal of Endocrinology 108, no. 3 (1986): 405–11. http://dx.doi.org/10.1677/joe.0.1080405.

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ABSTRACT Intravenous infusion of aldosterone (10 μg/kg body wt per h for 5 h) in four 2-month-old calves decreased salivary and urinary sodium (Na+) concentration and increased salivary potassium (K+) concentration without modifying salivary flow or urinary K+ concentration. Intravenous angiotensin II infusion (0·3 μg/kg body wt per min for 1 h) in four Na+-replete 16-month-old bulls decreased salivary Na+ concentration and increased that of K+. It also increased plasma cortisol and plasma aldosterone concentrations, and decreased plasma renin activity (PRA). In four 16-month-old bulls Na+ def

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Torrisi, G., E. Naselli, L. Di Donato, et al. "RF and microwave diagnostics for compact plasma traps and possible perspectives for fusion devices." Journal of Instrumentation 17, no. 01 (2022): C01050. http://dx.doi.org/10.1088/1748-0221/17/01/c01050.

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Abstract Plasma diagnostics is a topic having a great impact on R&D in compact ion sources as well as in large fusion reactors. Towards this aim, non-invasive microwave diagnostics approaches, such as interferometric, polarimetric and microwave imaging profilometric techniques can allow obtaining volumetric, line-integrated or even space-resolved information about plasma electron density. Special probes can be also designed and implemented in order to characterize external and/or self-generated radio-waves in the plasmas. In particular, the design, construction and operation of a K-band mi

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Wołyniec, Wojciech, Katarzyna Kasprowicz, Patrycja Rita-Tkachenko, Marcin Renke, and Wojciech Ratkowski. "Biochemical Markers of Renal Hypoperfusion, Hemoconcentration, and Proteinuria after Extreme Physical Exercise." Medicina 55, no. 5 (2019): 154. http://dx.doi.org/10.3390/medicina55050154.

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Background and Objectives: Physical exercise increases the blood perfusion of muscles, but decreases the renal blood flow. There are several markers of renal hypoperfusion which are used in the differential diagnosis of acute kidney failure. Albuminuria is observed after almost any exercise. The aim of this study was to assess changes in renal hypoperfusion and albuminuria after a 100-km race. Materials and Methods: A total of 27 males who finished a 100-km run were studied. The mean age of the runners was 38.04 ± 5.64 years. The exclusion criteria were a history of kidney disease, glomerular

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McPhail, Andrew, and Dominick Jokel. "Effectiveness of four-factor prothrombin complex concentrates versus plasma on vitamin K antagonist associated plasma international normalized ratio reversal." JBI Database of Systematic Reviews and Implementation Reports 16, no. 3 (2018): 662–68. http://dx.doi.org/10.11124/jbisrir-2017-003470.

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Fu, Yuan-Xia, Li Wang, and Li Xu. "Electronic temperature characteristics of laser-induced Fe plasma in fruits." Open Physics 18, no. 1 (2020): 40–47. http://dx.doi.org/10.1515/phys-2020-0005.

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AbstractFruit is not only delicious, but it also contains iron, potassium, magnesium, and other microelements necessary for the human body. Banana, pineapple and kiwifruit were selected as samples for testing. A laser with a wavelength of 532 nm was focused on the samples’ surface to generate a plasma. The emission spectrum of the atoms and ions in the plasma were collected by optical receivers, and the optimal condition was confirmed by analyzing the signal-to-noise ratio. The electronic temperature characteristics of the Fe plasma were studied under optimal experimental conditions. The maxim

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SUGAYA, R. "Cross-field plasma acceleration and potential formation induced by electromagnetic waves in a magnetized plasma." Journal of Plasma Physics 66, no. 3 (2001): 143–55. http://dx.doi.org/10.1017/s0022377801001234.

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A single-particle theory is developed to investigate particle acceleration along and across a magnetic field and the generation of an electric field transverse to the magnetic field induced by electromagnetic waves in a magnetized plasma. The almost perpendicularly propagating waves accelerate particles via their Landau and cyclotron damping, and the ratio of parallel and perpendicular drift velocities vs∥/vd can be proved to be proportional to k∥/k⊥. Simultaneously, an intense cross-field electric field E0 = B0×vd/c is generated via the dynamo effect owing to perpendicular particle accelerati

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Tligui, Noursaid, George R. Ruth, and Lawrence J. Felice. "Plasma ferulenol concentration and activity of clotting factors in sheep with Ferula communis variety brevifolia intoxication." American Journal of Veterinary Research 55, no. 11 (1994): 1564–69. http://dx.doi.org/10.2460/ajvr.1994.55.11.1564.

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Summary Dynamics of plasma ferulenol concentration and its effect on the vitamin K-dependent coagulation factors, prothrombin time (pt), and activated partial thromboplastin time (aptt) were determined in 4 sheep intoxicated individually with 600 g of powdered Ferula communis variety brevifolia (fcb) given in 8 doses at intervals of 6 hours. Ferulenol was detected in the plasma of all sheep at initial blood sample collection, 6 hours after the first dose of approximately 75 g of fcb was placed in the rumen. The last observed peak of approximately 20 μg/ml was detected at about 12 hours after t

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Alielden, Khaled. "Characteristics of stripes-pattern radio-emission sources." Monthly Notices of the Royal Astronomical Society 514, no. 2 (2022): 2135–44. http://dx.doi.org/10.1093/mnras/stac1384.

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ABSTRACT An investigation of the generation mechanism for stripes-pattern radio spectra is important for an understanding of the dynamics of non-thermal electrons in several astronomical objects, including the Sun, Jupiter, and the Crab Pulsar. A new analytical study is carried out to identify the plasma characteristics of fiber- and zebra-pattern emission sources without an underlying density or magnetic model. The analysis demonstrates that the source region of the stripes emission is located underneath the reconnection point, where the ratio s of the instability growth rate to the electron

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Macha, Kosmas, Armin Marsch, Gabriela Siedler, et al. "Cerebral Ischemia in Patients on Direct Oral Anticoagulants." Stroke 50, no. 4 (2019): 873–79. http://dx.doi.org/10.1161/strokeaha.118.023877.

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Background and Purpose— In patients with ischemic stroke on therapy with vitamin K antagonists, stroke severity and clinical course are affected by the quality of anticoagulation at the time of stroke onset, but clinical data for patients using direct oral anticoagulants (DOACs) are limited. Methods— Data from our registry including all patients admitted with acute cerebral ischemia while taking oral anticoagulants for atrial fibrillation between November 2014 and October 2017 were investigated. The activity of vitamin K antagonists was assessed using the international normalized ratio on admi

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Lin, Rong, Jiansen He, Xingyu Zhu, et al. "Power Anisotropy, Dispersion Signature and Turbulence Diffusion Region in the 3D Wavenumber Domain of Space Plasma Turbulence." Astrophysical Journal 939, no. 2 (2022): 121. http://dx.doi.org/10.3847/1538-4357/ac8e07.

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Abstract We explore the multifaceted important features of turbulence (e.g., anisotropy, dispersion, and diffusion) in the three-dimensional (3D) wavenumber domain (k ∥, k ⊥,1, k ⊥,2), by employing the k-filtering technique to high-quality measurements of fields and particles from the Magnetospheric Multiscale Mission (MMS) multi-spacecraft constellation. We compute the 3D power spectral densities (PSDs) of magnetic and electric field fluctuations (marked as PSD(δ B ( k )) and PSD ( δ E 〈 v i 〉 ′ ( k ) ) , respectively), both of which show a prominent spectral anisotropy in the sub-ion range.

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West, M. L., H. Sonnenberg, A. Veress, and M. L. Halperin. "The relationship between the plasma potassium concentration and renal potassium excretion in the adrenalectomized rat." Clinical Science 72, no. 5 (1987): 577–83. http://dx.doi.org/10.1042/cs0720577.

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1. The purpose of this study was to evaluate the renal mechanisms which lead to a high urine [K+] in adrenalectomized (ADX) rats devoid of aldosterone. 2. By dividing the urine [K+] by the urine to plasma osmolality ratio, the [K+] in the cortical collecting duct luminal fluid can be estimated; dividing this value by the plasma [K+] yields an index of the transtubular [K+] gradient (TTKG) in vivo. 3. The TTKG was close to 7 in aldosterone deficient ADX rats while on a normal K+ diet and fell towards unity when amiloride or a low K+ diet was administered to these rats. 4. With a longer time on

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Le Roux, C., and F. S. Navarra. "The origin of the K ^∗ suppression at the LHC." Journal of Physics: Conference Series 2340, no. 1 (2022): 012010. http://dx.doi.org/10.1088/1742-6596/2340/1/012010.

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Abstract When relativistic heavy ions collide, a plasma of quarks and gluons is created. It expands, cools down and eventually reaches the hadronization temperature, when a hadron gas phase is formed. In this phase, K ∗ and K can interact with light mesons and change their abundances with respect to the predictions of statistical hadronization models. In a previous article, we studied the effect of the cooling of the gas, the freeze-out temperature and the interaction cross sections on the K ∗/K yield ratio. In the present work, we investigate the effect of the different reaction mechanisms on

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Levy, Jerrold H., James Douketis, Thorsten Steiner, Joshua N. Goldstein, and Truman J. Milling. "Prothrombin Complex Concentrates for Perioperative Vitamin K Antagonist and Non–vitamin K Anticoagulant Reversal." Anesthesiology 129, no. 6 (2018): 1171–84. http://dx.doi.org/10.1097/aln.0000000000002399.

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Abstract Vitamin K antagonist therapy is associated with an increased bleeding risk, and clinicians often reverse anticoagulation in patients who require emergency surgical procedures. Current guidelines for rapid anticoagulation reversal for emergency surgery recommend four-factor prothrombin complex concentrate and vitamin K coadministration. The authors reviewed the current evidence on prothrombin complex concentrate treatment for vitamin K antagonist reversal in the perioperative setting, focusing on comparative studies and in the context of intracranial hemorrhage and cardiac surgery. The

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SUGAYA, R. "Cross-field plasma acceleration and potential formation induced by electrostatic waves in a relativistic magnetized plasma." Journal of Plasma Physics 64, no. 2 (2000): 109–24. http://dx.doi.org/10.1017/s0022377800008485.

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Relativistic and non-relativistic particle acceleration along and across a magnetic field, and the generation of an electric field transverse to the magnetic field, both induced by almost perpendicularly propagating electrostatic waves in a relativistic magnetized plasma, are investigated theoretically on the basis of relativistic quasilinear transport equations. The electrostatic waves accelerate particles via Landau or cyclotron damping, and the ratio of parallel and perpendicular drift velocities vs||/vd can be proved to be proportional to k||/k⊥. Simultaneously, an intense cross-field elec

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HOSHIKAWA, KIYOFUSA, ITSURO TAMANOI, AKEMI NAKAMURA, MUTSUMI KACHI, KUNIO OOHASHI, and SHINJI MATSUMOTO. "POSSIBLE CHARACTERIZATION OF MOUSE STRAINS BY PLASMA ANALYSIS WITH PIXE." International Journal of PIXE 04, no. 02n03 (1994): 97–105. http://dx.doi.org/10.1142/s0129083594000131.

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We investigated the elemental composition of mouse blood plasma with PIXE method. We measured quantitative X-ray yields of S, Cl, K and Ca by changing sample volume from 1.25 to 15.0 µl to find the most profitable volume of plasma for elemental analysis. Linear relationships were confirmed between the applied volume (1.25~5.0 µl) and the counts of X-ray from each element. Some elements showed, however, saturated curves over 5.0 µl. Five μl was enough to analyze some important elements of blood plasma and used in the present analysis. We propose 5.0 µl as a standard amount of sample in plasma a

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46

Hoshi, Hiroaki, Hiroto Kuwabara, Gabriel Léger, Paul Cumming, Mark Guttman, and Albert Gjedde. "6-[18F]fluoro-l-DOPA Metabolism in Living Human Brain: A Comparison of Six Analytical Methods." Journal of Cerebral Blood Flow & Metabolism 13, no. 1 (1993): 57–69. http://dx.doi.org/10.1038/jcbfm.1993.8.

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In 11 normal volunteers and six patients with Parkinson's disease, we compared six different analyses of dopaminergic function with l-3,4-dihydroxy-6-[18F]fluorophenylalanine (FDOPA) and positron emission tomography (PET). The caudate nucleus, putamen, and several reference regions were identified in PET images, using magnetic resonance imaging (MRI). The six analyses included two direct determinations of DOPA decarboxylase activity ( kD3, k*3), the slope–intercept plot based on plasma concentration ( K), two slope–intercept plots based on tissue content ( kr3, ks3), and the striato–occipital

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Howarth, David, Janet Attfield, C. Cooke, et al. "Haemostatic Factors in Human Peripheral Afferent Lymph." Thrombosis and Haemostasis 83, no. 03 (2000): 427–32. http://dx.doi.org/10.1055/s-0037-1613832.

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SummaryPeripheral afferent lymph was obtained by cannulation of a collecting vessel in 17 healthy men (mean age 26 years). Lymph/plasma ratios of all vitamin K-dependent factors were lower than expected from molecular weight. Factor VII, factor IX and tissue factor pathway inhibitor (TFPI) lymph/plasma activity ratios were higher than antigen ratios. Activated factor VII (FVIIa) and TFPI-Xa complex concentrations were higher in lymph than plasma, and the raised FVIIa did not appear to be due to cannulation. The fibrinogen lymph/plasma activity (Clauss) ratio averaged about 20% of the antigen r

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Vitish-Sharma, P., R. Shah, M. Anjari, J. Knowles, and K. Qurashi. "Failure of fresh frozen plasma infusion and vitamin K to correct elevated international normalised ratio." Case Reports 2012, jul12 2 (2012): bcr0820114635. http://dx.doi.org/10.1136/bcr.08.2011.4635.

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Zhang, Lianshui, Xiaojun Wang, Weidong Lai, Xueliang Cheng, and Kuifang Zhao. "Removal Dynamics of Nitric Oxide (NO) Pollutant Gas by Pulse-Discharged Plasma Technique." Scientific World Journal 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/653576.

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Nonthermal plasma technique has drawn extensive attentions for removal of air pollutants such as NOxand SO2. The NO removal mechanism in pulse discharged plasma is discussed in this paper. Emission spectra diagnosis indicates that the higher the discharge voltage is, the more the NO are removed and transformed into O, N, N2, NO2, and so forth. Plasma electron temperatureTeis ranged from 6400 K at 2.4 kV discharge voltage to 9500 K at 4.8 kV. After establishing a zero-dimensional chemical reaction kinetic model, the major reaction paths are clarified as the electron collision dissociation of NO

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de Vries, Bram C. S., Stefan P. Berger, Stephan J. L. Bakker, Martin H. de Borst, and Margriet F. C. de Jong. "Pre-Transplant Plasma Potassium as a Potential Risk Factor for the Need of Early Hyperkalaemia Treatment after Kidney Transplantation: A Cohort Study." Nephron 145, no. 1 (2020): 63–70. http://dx.doi.org/10.1159/000511404.

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<b><i>Introduction:</i></b> Plasma potassium (K<sup>+</sup>) abnormalities are common among patients with chronic kidney disease and are associated with higher rates of death, major adverse cardiac events, and hospitalization in this population. Currently, no guidelines exist on how to handle pre-transplant plasma K+ in renal transplant recipients (RTR). <b><i>Objective:</i></b> The aim of this study is to examine the relation between pre-transplant plasma K<sup>+</sup> and interventions to resolve hyperkalaemia within 48

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