Journal articles: 'Stoppers exchange'

1

Starygina, Natalya. "EXTRALINGUISTIC STOPPERS AS THE BASIS OF CROSS-CULTURAL SPACE WITHIN A LANGUAGE FOR SPECIFIC PURPOSES." Bulletin of Chelyabinsk State University 475, no. 5 (August 17, 2023): 121–30. http://dx.doi.org/10.47475/1994-2796-2023-475-5-121-130.

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This article discusses the features of linguistic and cultural accents within the language for special purposes of the forest cluster. The most functional and productive markers in this sense are linguistic and extralinguistic stoppers involved in the special spaсе of the profile text. Stoppers participate in the process of information exchange based on ethnic realities, strengthen communication in the field of forestry, nature management, logging and woodworking with precedent fragments of a specific geolocative linguistic and cultural environment.

2

Rowan, Stuart J., Stuart J. Cantrill, J. Fraser Stoddart, Andrew J. P. White, and David J. Williams. "Toward Daisy Chain Polymers: “Wittig Exchange” of Stoppers in [2]Rotaxane Monomers." Organic Letters 2, no. 6 (March 2000): 759–62. http://dx.doi.org/10.1021/ol9913587.

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Frumence, Etienne, Sandrine Genetet, Pierre Ripoche, Achille Iolascon, Immacolata Andolfo, Caroline Le Van Kim, Yves Colin, Isabelle Mouro-Chanteloup, and Claude Lopez. "Rapid Cl−/HCO3−exchange kinetics of AE1 in HEK293 cells and hereditary stomatocytosis red blood cells." American Journal of Physiology-Cell Physiology 305, no. 6 (September 15, 2013): C654—C662. http://dx.doi.org/10.1152/ajpcell.00142.2013.

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Anion exchanger 1 (AE1) or band 3 is a membrane protein responsible for the rapid exchange of chloride for bicarbonate across the red blood cell membrane. Nine mutations leading to single amino-acid substitutions in the transmembrane domain of AE1 are associated with dominant hereditary stomatocytosis, monovalent cation leaks, and reduced anion exchange activity. We set up a stopped-flow spectrofluorometry assay coupled with flow cytometry to investigate the anion transport and membrane expression characteristics of wild-type recombinant AE1 in HEK293 cells, using an inducible expression system. Likewise, study of three stomatocytosis-associated mutations (R730C, E758K, and G796R), allowed the validation of our method. Measurement of the rapid and specific chloride/bicarbonate exchange by surface expressed AE1 showed that E758K mutant was fully active compared with wild-type (WT) AE1, whereas R730C and G796R mutants were inactive, reinforcing previously reported data on other experimental models. Stopped-flow analysis of AE1 transport activity in red blood cell ghost preparations revealed a 50% reduction of G796R compared with WT AE1 corresponding to a loss of function of the G796R mutated protein, in accordance with the heterozygous status of the AE1 variant patients. In conclusion, stopped-flow led to measurement of rapid transport kinetics using the natural substrate for AE1 and, conjugated with flow cytometry, allowed a reliable correlation of chloride/bicarbonate exchange to surface expression of AE1, both in recombinant cells and ghosts and therefore a fine comparison of function between different stomatocytosis samples. This technical approach thus provides significant improvements in anion exchange analysis in red blood cells.

4

Caruana, Ralph J., Kenneth L. Smith, Charlene P. Hess, John Charles Perez, and Patricia L. Cheek. "Dialysate Dumping: A Novel Cause of Inadequate Dialysis in Continuous Ambulatory Peritoneal Dialysis (CAPD) Patients." Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis 9, no. 4 (October 1989): 319–20. http://dx.doi.org/10.1177/089686088900900418.

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Inadequate control of serum chemistries and extracellular fluid volume may result in patients being changed from continuous ambulatory peritoneal dialysis (CAPD) to another form of dialysis. We report 2 patients in whom apparent inadequacy of CAPD resulted from dialysate dumping. The first patient could not control her fluid intake and required frequent hypertonic exchanges. She felt too full with these exchanges and drained a substantial portion of each exchange 30 to 60 min after infusion. Patient 2 had similar complaints but simply drained a large portion of each fresh bag directly into the drain bag at the start of the fiush-before-fill step. Both patients had improved results from CAPD once they stopped their dialysate dumping. Partial wasting of each exchange because of abdominal discomfort should be added to the causes of inadequate dialysis in CAPD.

5

Bárány, Michael, and Pieter P. de Tombe. "Rapid exchange of actin-bound nucleotide in perfused rat heart." American Journal of Physiology-Heart and Circulatory Physiology 286, no. 4 (April 2004): H1394—H1401. http://dx.doi.org/10.1152/ajpheart.00866.2003.

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In the rat heart the actin-bound nucleotide contained both ATP and ADP. The ratio of bound ATP to bound ADP depended on the functional state of the heart; it was higher in hearts stopped reversibly in diastole (low Ca2+, high Mg2+, or high K+), than in stimulated (inotropic agents or pacing) hearts. Immunoblotting and gel electrophoresis showed the existence of G-actin (30% of total actin) in the cytoplasm of the heart. Pure actin was isolated from rat hearts: in G-actin the bound nucleotide readily exchanged with ATP or ADP, and in F-actin the bound nucleotide did not exchange with ATP or ADP. The free and bound nucleotides were separated in the intact heart by extraction with 75% methanol at –15°C. In rat hearts perfused with 32P-labeled orthophosphate the actin-bound nucleotide rapidly exchanged with the cytoplasmic ATP. The full exchange of the bound ATP was immediate, whereas the full exchange of the bound ADP was slower. The full exchange of the bound ATP was independent of the heartbeat frequency, whereas the full exchange of the bound ADP was frequency dependent. The data suggest that the transformation of actin monomer-ATP to actin polymer-ADP is a part of the normal contraction-relaxation cycle of the rat heart.

6

Gray, William Glenn. "“Number One in Europe”: The Startling Emergence of the Deutsche Mark, 1968–1969." Central European History 39, no. 1 (March 2006): 56–78. http://dx.doi.org/10.1017/s0008938906000033.

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The dollars—and pounds, and francs—came pouring in. Speculators and small savers across Western Europe raced to exchange their currencies for the Deutsche Mark. “Hot money” flowed into Germany at astounding rates. The reserves of West Germany's central bank, the Bundesbank, shot up by DM 9.4 billion ($2.15 billion) in the first three weeks of November 1968—with DM 7.3 billion arriving in just three days of trading. Airports in Germany barred exchanges of more than one hundred francs at a time; train stations in Zurich stopped accepting French notes altogether.

7

Nair, R., H. S. Plendl, E. P. Gavathas, L. C. Liu, R. J. Estep, B. J. Dropesky, J. D. Bowman, et al. "Pion-nucleus single charge exchange induced by stopped negative pions." Physical Review C 53, no. 2 (February 1, 1996): 811–14. http://dx.doi.org/10.1103/physrevc.53.811.

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Amin, Mona Ahmed, Mohamed Mommtaz, Nashwa Al-Saraf, Ahmed Fathy, Dina Farouk, Ahmed Nageeb, Rana Sherif, and Mina Adel Ragheb. "Case of hypertriglyceridemia-induced subacute pancreatitis and hypertriglyceridemia-triggered transverse sinus thrombosis in a recently diagnosed diabetic patient and the efficacy of management of hypertriglyceridemia with continuous insulin infusion." International Journal of Noncommunicable Diseases 9, no. 1 (2024): 42–45. http://dx.doi.org/10.4103/jncd.jncd_57_23.

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ABSTRACT A 28-year-old single female diagnosed with transverse sinus thrombosis; she was also discovered to be diabetic with severe hyperlipidemia. She presented by recurrent episodes of diffuse dull aching abdominal pain referred to the back; she was diagnosed with acute pancreatitis with markedly elevated triglyceride (TG) levels. She started medical treatment for hypertriglyceridemia with no improvement. She started four sessions of plasma exchanges with marked improvement of the general condition, abdominal pain and appetite, and TGs declined.While the patient was on plasma exchange she developed catheter related infection so it is stopped and soon triglycerides raised again with recurrence of the abdominal pain and we started insulin infusion with improvement of her condition

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Nierengarten, Iwona, Eric Meichsner, Michel Holler, Pauline Pieper, Robert Deschenaux, Béatrice Delavaux-Nicot, and Jean-François Nierengarten. "Preparation of Pillar[5]arene-Based [2]Rotaxanes by a Stopper-Exchange Strategy." Chemistry - A European Journal 24, no. 1 (November 23, 2017): 169–77. http://dx.doi.org/10.1002/chem.201703997.

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Hilczer, Maria, A. V. Barzykin, and M. Tachiya. "Theory of the Stopped-Flow Method for Studying Micelle Exchange Kinetics." Langmuir 17, no. 14 (July 2001): 4196–201. http://dx.doi.org/10.1021/la001285w.

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11

Nierengarten, Iwona, and Jean‐François Nierengarten. "Diversity Oriented Preparation of Pillar[5]arene‐Containing [2]Rotaxanes by a Stopper Exchange Strategy." ChemistryOpen 9, no. 4 (March 10, 2020): 393–400. http://dx.doi.org/10.1002/open.202000035.

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Nierengarten, Iwona, and Jean‐François Nierengarten. "Diversity Oriented Preparation of Pillar[5]arene‐Containing [2]Rotaxanes by a Stopper Exchange Strategy." ChemistryOpen 9, no. 4 (April 2020): 388. http://dx.doi.org/10.1002/open.202000063.

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13

Basu, Hirak S., Richard H. Shafer, and Laurence J. Marton. "A stopped-flow H-D exchange kinetic study of spermine-polynucleotide interactions." Nucleic Acids Research 15, no. 14 (1987): 5873–86. http://dx.doi.org/10.1093/nar/15.14.5873.

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14

Fu, Huachen. "The History and Impact of the Conflict between Russia and Ukraine." Journal of Education, Humanities and Social Sciences 6 (December 31, 2022): 94–98. http://dx.doi.org/10.54097/ehss.v6i.4047.

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Since February 2022, the conflict between Russia and Ukraine has attracted a lot of attention. Many researchers have analyzed and predicted this. The conflict has not stopped, and the subsequent actions and measures of Russia, the European Union, the United States and other countries and regions will also bring great changes to the world's political, economic, and cultural exchanges. Starting with the historical origins of the conflict between the two countries, this study examined how the conflict between Russia and Ukraine has deepened step by step. Then, based on game theory, this study explored the reasons for Russia's decision and the consequences of such a decision. To solve this conflict, all countries and regions should put aside their opposition, establish a win-win sense, and find solutions to the problem through negotiation, exchange and trust. Major international organizations should also play a more active role in this process and assist in communication and coordination.

15

Mori, Hideharu, Kunihiko Tashino, and Minoru Terano. "H2-D2 exchange reaction with MgCl2-supported Ziegler catalyst by stopped-flow method." Macromolecular Chemistry and Physics 197, no. 3 (March 1996): 895–900. http://dx.doi.org/10.1002/macp.1996.021970311.

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16

Salim, Agus, and Kai Shi. "A Cointegration of the Exchange Rate and Macroeconomic Fundamentals: The Case of the Indonesian Rupiah vis-á-vis Currencies of Primary Trade Partners." Journal of Risk and Financial Management 12, no. 2 (May 13, 2019): 87. http://dx.doi.org/10.3390/jrfm12020087.

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Since the appearance of persistent research finding a disconnection between the exchange rate and its macroeconomic fundamentals, the empirical debate has not stopped. Studies employ various methods to explain the presence of the exchange rate disconnect puzzle, including applying models to the case of emerging market economies. However, the exchange rate has different determinants in some countries. To revisit this puzzle in an emerging market currency, we analyzed the cointegration of the exchange rate of the Indonesian Rupiah vis-á-vis currencies of primary trade partners and its macroeconomic fundamentals. The empirical results based on Autoregressive Distributed Lag (ARDL) and Nonlinear Autoregressive Distributed Lag (NARDL) models show that the fundamental variables consistently drive the exchange rate. The trade surplus as an extended nonlinear variable revealed high feedback to the exchange rate volatility in the long-run.

17

Magerl, Kathrin, and Bernhard Dick. "Dimerization of LOV domains of Rhodobacter sphaeroides (RsLOV) studied with FRET and stopped-flow experiments." Photochemical & Photobiological Sciences 19, no. 2 (2020): 159–70. http://dx.doi.org/10.1039/c9pp00424f.

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LOV (light-oxygen-voltage) proteins function as light sensors in plants, fungi, and bacteria. RsLOV is unique as the light state is a monomer but the dark state is a dimer. These dimers exchange their monomer units on a time-scale of seconds.

18

Skinner, Jason G., Kaili Ranta, Nicholas Whiting, Aaron M. Coffey, Panayiotis Nikolaou, Matthew S. Rosen, Eduard Y. Chekmenev, Peter G. Morris, Michael J. Barlow, and Boyd M. Goodson. "High Xe density, high photon flux, stopped-flow spin-exchange optical pumping: Simulations versus experiments." Journal of Magnetic Resonance 312 (March 2020): 106686. http://dx.doi.org/10.1016/j.jmr.2020.106686.

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19

Breen, Patrick J., Kenneth A. Johnson, and William D. Horrocks. "Stopped-flow kinetic studies of metal ion dissociation or exchange in a tryptophan-containing parvalbumin." Biochemistry 24, no. 19 (September 1985): 4997–5004. http://dx.doi.org/10.1021/bi00340a006.

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Nelsen, Stephen F., Michael T. Ramm, Rustem F. Ismagilov, Mark A. Nagy, Dwight A. Trieber, Douglas R. Powell, Xi Chen, et al. "Estimation of Self-Exchange Electron Transfer Rate Constants for Organic Compounds from Stopped-Flow Studies." Journal of the American Chemical Society 119, no. 25 (June 1997): 5900–5907. http://dx.doi.org/10.1021/ja970321j.

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21

Mazahreh, Janine, and Nathaniel V. Nucci. "Characterizing the composition dependence of exchange rates in reverse micelle systems by stopped-flow fluorescence." Biophysical Journal 123, no. 3 (February 2024): 150a. http://dx.doi.org/10.1016/j.bpj.2023.11.1026.

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22

Mazzi, G., A. Raineri, M. Zucco, P. Passadore, A. Pomes, and B. M. Orazi. "Plasma-Exchange in Chronic Peripheral Neurological Disorders." International Journal of Artificial Organs 21, no. 1 (January 1998): 40–46. http://dx.doi.org/10.1177/039139889802100109.

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We investigated 19 patients affected by chronic peripheral neurological disorders treated with therapeutic plasma exchange (TPE) to verify the efficacy of the therapeutic protocol used in these diseases. Every patient was clinically considered after 5 TPE. Those who showed an improvement started chemotherapy and continued TPE at the rate of 2 procedures/week for 2 weeks, then 1 procedure/week for 1 month and finally 1 procedure every 2 weeks for 2 months. Intravenous immunoglobulins (IVIg) were infused at the end of apheretic treatment in one of the patients affected by neurological disorders due to monoclonal gammopathy undetermined significance. HCV-positive patients with cryoglobulins were treated with α-interferon (α-IFN) for 6 months before TPE. Eleven patients (58%) had a symptomatic improvement, 2 (1.5%) stopped TPE treatment owing to side effects and 6 (31.5%) did not respond to apheretic therapy. In order to improve the advantages of TPE we suggest using IVIg at the end of apheretic therapy, while in HCV-positive patients, at least one year of α-IFN therapy is required before initiating TPE.

23

Rispens, Theo, Anke Vennegoor, Gert Jan Wolbink, Chris H. Polman, and Joep Killestein. "Natalizumab remains detectable in patients with multiple sclerosis long after treatment is stopped." Multiple Sclerosis Journal 18, no. 6 (December 19, 2011): 899–901. http://dx.doi.org/10.1177/1352458511431073.

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Natalizumab is frequently used as a treatment for multiple sclerosis (MS). The occurrence of progressive multifocal leukoencephalopathy (PML) in natalizumab-treated patients indicates that its prominent beneficial effects need to be balanced against the risks. Also, cessation of the drug seems to be associated with recurrence of disease activity. Both the moment of rebound disease activity and the outcome of PML are related to clearance of the drug. Specific features of this IgG4 antibody (i.e. half-antibody exchange) may result in underestimated drug levels. Here, we demonstrate natalizumab levels in 10 patients with relapsing MS, using a recently developed sensitive assay. Remarkably, natalizumab was detectable up to 200 days after cessation of therapy.

24

Breen, Patrick J., William D. Horrocks, and Kenneth A. Johnson. "Stopped-flow study of ligand-exchange kinetics between terbium(III) ion and calcium(II) ethylenediaminetetraacetate(4-)." Inorganic Chemistry 25, no. 12 (June 1986): 1968–71. http://dx.doi.org/10.1021/ic00232a013.

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Girardet, Jean-Luc, and Jean Ramstein. "A reexamination of the stopped-flow measured hydrogen-deuterium exchange rates in nucleic acid double helices." Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression 1130, no. 2 (March 1992): 127–32. http://dx.doi.org/10.1016/0167-4781(92)90519-6.

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Bhuyan, Abani K., and Jayant B. Udgaonkar. "Stopped-flow NMR measurement of hydrogen exchange rates in reduced horse cytochromec under strongly destabilizing conditions." Proteins: Structure, Function, and Genetics 32, no. 2 (August 1, 1998): 241–47. http://dx.doi.org/10.1002/(sici)1097-0134(19980801)32:2<241::aid-prot10>3.0.co;2-d.

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LIM, CHONG YAH. "ECONOMIC GROWTH AND EXCHANGE RATE: A NEW ROAD AHEAD FOR INDONESIA." Singapore Economic Review 60, no. 02 (June 2015): 1550010. http://dx.doi.org/10.1142/s0217590815500101.

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This short article advocates the further development of Indonesia through an export-oriented industrialization policy. It opines that it is only through this policy that the perennial depreciation of the Indonesian exchange rate, including through capital flight, can be stopped. The article also advocates a twin-engine approach, with the State be responsible for the efficient supply of public goods, and the private sector, including the active participation of foreign investment, be encouraged, actively, for the supply of private goods, with concentration on export-oriented manufactured goods. The social and educational system will have to give support to this fundamental policy shift.

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Basiakova, K. V., and E. P. Titovets. "Study of the effect of some drugs used in the clinic on the AQP1 activity of the human erythrocyte membrane." Proceedings of the National Academy of Sciences of Belarus, Medical series 18, no. 2 (June 4, 2021): 204–11. http://dx.doi.org/10.29235/1814-6023-2021-18-2-204-211.

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Using the stopped flow method and based on the study of the intensity of light scattering, the effect of pharmacological preparations used in the clinic on the water exchange of human erythrocytes, catalyzed by aquaporin AQP1, was studied. Pharmacological preparations used in therapeutic concentrations have a variable inhibitory effect on water permeability of the erythrocyte membrane. The obtained results broaden our understanding of the molecular action mechanism of the investigated drugs. In view of the wide distribution of AQP1 in various human tissues, these data should be taken into account when carrying out therapeutic measures aimed at normalizing the water exchange of organs and tissues.

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Ivanov, Yuri D., Ivan D. Shumov, Andrey F. Kozlov, Maria O. Ershova, Anastasia A. Valueva, Irina A. Ivanova, Vadim Y. Tatur, Andrei A. Lukyanitsa, Nina D. Ivanova, and Vadim S. Ziborov. "Stopped Flow of Glycerol Induces the Enhancement of Adsorption and Aggregation of HRP on Mica." Micromachines 14, no. 5 (May 10, 2023): 1024. http://dx.doi.org/10.3390/mi14051024.

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Glycerol is a usable component of heat-transfer fluids, and is thus suitable for the use in microchannel-based heat exchangers in biosensors and microelectronic devices. The flow of a fluid can lead to the generation of electromagnetic fields, which can affect enzymes. Herein, by means of atomic force microscopy (AFM) and spectrophotometry, a long-term effect of stopped flow of glycerol through a coiled heat exchanger on horseradish peroxidase (HRP) has been revealed. Samples of buffered HRP solution were incubated near either the inlet or the outlet sections of the heat exchanger after stopping the flow. It has been found that both the enzyme aggregation state and the number of mica-adsorbed HRP particles increase after such an incubation for 40 min. Moreover, the enzymatic activity of the enzyme incubated near the inlet section has been found to increase in comparison with that of the control sample, while the activity of the enzyme incubated near the outlet section remained unaffected. Our results can find application in the development of biosensors and bioreactors, in which flow-based heat exchangers are employed.

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Nierengarten, Iwona, and Jean‐François Nierengarten. "Front Cover: Diversity Oriented Preparation of Pillar[5]arene‐Containing [2]Rotaxanes by a Stopper Exchange Strategy (ChemistryOpen 4/2020)." ChemistryOpen 9, no. 4 (April 2020): 386. http://dx.doi.org/10.1002/open.202000064.

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Deng, Xiaoxuan, Haibo Li, Chenxi Ji, Bin Chen, Haichen Zhou, and Congcong Zhang. "Formation mechanism of point-like defect in IF steel sheet during deep drawing process." Metallurgical Research & Technology 119, no. 4 (2022): 411. http://dx.doi.org/10.1051/metal/2022052.

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In the current study, the three-dimensional morphology of a typical point-like defect in deep drawing IF steel sheets was characterized by step machining method, and the corresponding casting parameters and stopper tip clogs were also analyzed. The results show that the defect contains two parts: single alumina refractory grain and alumina clusters. Furthermore, the actual size of inclusion in the defect using the 3D characterization was determined to about 1 mm, much larger than that only from surface evaluation (~ 0.1 mm). Based on clog analysis and tracing casting parameters, the formation mechanism of defect during the whole production process was proposed. The defect may originates from the occasional dislodging of stopper tip deposits in the tundish level rising period of ladle exchange process where the entrapped FeO rich ladle slag into the tundish and temperature drop worsen the clogging. Therefore, elimination of ladle slag entrapment and stabilization of steel temperature in the tundish during ladle change procedures help to eliminate the point-like defect of steel sheets for deep drawing purpose.

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Dowling, Kenneth C., and J. K. Thomas. "Dynamics of ion exchange in partially sulfonated polystyrene ionomer solutions as monitored by stopped-flow fluorescence measurements." Macromolecules 24, no. 14 (July 1991): 4131–37. http://dx.doi.org/10.1021/ma00014a026.

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MCKINNON, RONALD, BRIAN LEE, and YI DAVID WANG. "THE GLOBAL CREDIT CRISIS AND CHINA'S EXCHANGE RATE." Singapore Economic Review 55, no. 02 (June 2010): 253–72. http://dx.doi.org/10.1142/s0217590810003705.

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The case for stabilizing China's exchange rate against the dollar is strong. Before 2005 when the yuan/dollar rate was credibly fixed, it helped anchor China's domestic price level. But gradual RMB appreciation from July 2005 to July 2008 created a "one-way-bet" that disordered China's financial markets in two respects: (i) no private capital outflows to finance China's huge trade surplus leading to an undue build up of official exchange reserves and erosion of monetary control, and (ii) a breakdown of the forward exchange market in 2007–2008 so that exporters could no longer get trade credit — probably worsening the severe slump in Chinese exports. But after July 2008, the credit crunch induced an unexpected unwinding of the dollar carry trade leading to a sharp appreciation in the dollar's effective exchange rate. The People's Bank of China (PBC) then stopped RMB appreciation against the dollar. China's forward exchange market was restored and monetary control regained. Now the PBC can better support the fiscal stimulus by promoting a parallel expansion of bank credit. But, since March 2009, the fall in the dollar (with the RMB tied to it) again threatens to undermine the yuan/dollar rate and China's monetary stability.

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Santosa, A. Rumbiana, Z. Wahab, S. P. Kurniawan, R. M. Naibaho, and P. Yogyartono. "Successful Treatment of Methampyrone-Induced Toxic Epidermal Necrolysis with Therapeutic Plasma Exchange." Case Reports in Medicine 2018 (July 18, 2018): 1–4. http://dx.doi.org/10.1155/2018/2182604.

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The toxic epidermal necrolysis (TEN) is a severe cutaneous adverse reaction frequently caused by drug exposure. A 58-year-old male was admitted to the hospital after administration of methampyrone. He developed sloughing of the total epidermis which rapidly extended over the trunk and limbs. The presumptive diagnosis was drug-induced TEN. Despite the treatment with pulsed glucocorticoid and cyclosporine, the skin lesions extended over the entire body. Strikingly, the progression of blistering was stopped by therapeutic plasma exchange (TPE). TPE was discontinued after the signs of skin inflammation had been overcome. He recovered in 8 days of hospitalization. We present here a case of a methampyrone-induced TEN which was successfully treated with TPE.

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BERTANI, M., M. AGNELLO, G. BEER, L. BENUSSI, S. BIANCO, E. BOTTA, T. BRESSANI, et al. "FIRST HYPERNUCLEAR RESULTS FROM THE FINUDA EXPERIMENT AT DAΦNE." International Journal of Modern Physics A 20, no. 02n03 (January 30, 2005): 310–20. http://dx.doi.org/10.1142/s0217751x05021476.

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FINUDA is the hypernuclear physics experiment carried out at DAΦNE, the e+e- ϕ-factory of the INFN Frascati Laboratory. The aim of the experiment is to study simultaneously the formation and decay of hypernuclei produced by the strangeness exchange reaction induced by the stopped K- coming from the decay of the ϕ(1020) mesons. This paper presents the first preliminary results concerning spectrometer performances, hypernuclear formation and decay from the first FINUDA data set.

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Comber, Michael H. I., Gordon J. Eales, Peter J. D. Nicholson, and Simon P. Henn. "Simple in-line stopped flow photolysis of copper complexes in natural waters using a flow injection system." Journal of Automatic Chemistry 14, no. 1 (1992): 5–8. http://dx.doi.org/10.1155/s1463924692000026.

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The development of an in-line digestion system based on simple UV lamp is reported. The effect of photolysis on the preconcentration of copper was investigated using an in-line Chelex-l00 ion-exchange column linked to an atomic absorption spectrometer. Three model ligands, glycine, NTA and EDTA, have been used to demonstrate the effect of the digestion system. In a stopped-flow mode, over 90% of the complexed copper was recovered in the presence of any of the three ligands. When the UV lamp was turned off, this changed to 84, 45 and 2% recovery for the glycine, NTA and EDTA complexed copper, respectively. The ability to analyse samples with the UV lamp on or off means that the device may be used to study the speciation of the copper.

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Wang, N., J. P. Butler, and R. B. Banzett. "Gas exchange across avian eggshells oscillates in phase with heartbeat." Journal of Applied Physiology 69, no. 4 (October 1, 1990): 1549–52. http://dx.doi.org/10.1152/jappl.1990.69.4.1549.

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Rahn et al. (J. Appl. Physiol. 69: 1546-1548, 1990) showed that the gas pressure in a plethysmograph containing an intact egg oscillates in phase with electrocardiogram (ECG) and that this pressure variation could be used as a noninvasive way to determine the heart rate of an avian embryo. One possible mechanism to account for the pressure oscillation is the mechanical movement of the embryonic heart, which leads to volume shifts of gas within the plethysmograph. Another possibility is that the oscillation of gas pressure with heartbeat is pulsatile gas exchange resulting from pulsatile blood flow. If gas exchange were transiently stopped, a pressure signal dependent on gas exchange should disappear, while a pressure signal dependent on cardiovascular motion should persist. Using a number of late-age hen eggs (at days 15-20 of incubation), we tested these hypotheses by suddenly changing the gas composition surrounding an egg and measuring the effect of the pressure oscillation. We found that 1) after 5% CO2-95% N2 was flushed into the plethysmograph (presumably halting gas exchange), pressure oscillations went almost to zero and the ECG signal remained; after air was flushed back to the plethysmograph, the pressure signal returned to control level; 2) after 20% CO2-20% O2-60% N2 was flushed into the plethysmograph (presumably increasing net gas exchange), the pressure signal increased 2.5-fold compared with that in air; and 3) after 1% CO2-99% N2 was flushed into the plethysmograph (presumably reversing gas exchange), the oscillation pressure decreased to one-fourth of that in air and the phase of pressure relative to ECG reversed compared with the phase in air.(ABSTRACT TRUNCATED AT 250 WORDS)

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Mizuno, H., J. Isobe, S. Matsunobe, T. Nakamura, Y. Shimizu, and S. Hitomi. "A liquid-liquid blood-gas exchange for the treatment of acute respiratory failure: A new blood gas exchange using artificial blood as an oxygen carrier." International Journal of Artificial Organs 17, no. 11 (November 1994): 609–15. http://dx.doi.org/10.1177/039139889401701110.

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A new liquid-liquid blood gas exchange system was investigated using a veno-venous low flow extracorporeal circuit. A 2 m2 hollow fiber dialyzer served as the interface of the blood and oxygen carrier (a 38 percent FC-43, perfluorocarbon emulsion in a buffered electrolyte solution), which was continuously recycled through a bubble oxygenator. Experiments were performed on five mongrel dogs under general anesthesia. Upon the arrest of spontaneous ventilation, the dogs' lungs were inflated with 50% oxygen gas under a positive pressure of 10 cmH2O. After 10 min of apnea the dogs' PaO2 decreased to 37 ± 14 mmHg, and the extracorporeal circulation was started at 10 ml/min/kg b./w. At 15 min the PaO2 had risen to 80 ± 41 mmHg and at 30 min to 121 ± 17 mmHg. The oxygen transfer was 8.3 ± 2.3 ml/min. The extracorporeal circulation was continued 5h, when PaO2 reached 156 ± 90 mmHg, and PaCO2 148 ± 43 mmHg, then stopped. Fifteen minutes later, the PaO2 had returned to 32 ± 10 mmHg. These findings indicate that our blood gas exchange system can supply a sufficient amount of oxygen to the body under apnea with continuous positive airway pressure.

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Hiew, Fu Liong, Win Min Thit, Mathew Alexander, Umapathi Thirugnanam, Sasitorn Siritho, Kevin Tan, Seinn Mya Mya Aye, et al. "Consensus recommendation on the use of therapeutic plasma exchange for adult neurological diseases in Southeast Asia from the Southeast Asia therapeutic plasma exchange consortium." Journal of Central Nervous System Disease 13 (January 2021): 117957352110573. http://dx.doi.org/10.1177/11795735211057314.

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Therapeutic plasma exchange (TPE) is an effective and affordable treatment option in most parts of Southeast Asia (SEA). In 2018, the SEA TPE Consortium (SEATPEC) was established, consisting of regional neurologists working to improve outcome of various autoimmune neurological diseases. We proposed an immunotherapeutic guideline prioritizing TPE for this region. We reviewed disease burden, evidence-based treatment options, and major guidelines for common autoimmune neurological disorders seen in SEA. A modified treatment algorithm based on consensus agreement by key-opinion leaders was proposed. Autoimmune antibody diagnostic testing through collaboration with accredited laboratories was established. Choice of first-line immunotherapies (IVIg/corticosteroid/TPE) is based on available evidence, clinicians’ experience, contraindications, local availability, and affordability. TPE could be chosen as first-line therapy for GBS, CIDP, MG (acute/short term), IgG, A paraproteinemic neuropathy, and NMDAR encephalitis. Treatment is stopped for acute monophasic conditions such as GBS and ADEM following satisfactory outcome. For chronic immune disorders, a therapy taper or long-term maintenance therapy is recommended depending on the defined clinical state. TPE as second-line treatment is indicated for IVIg or corticosteroids refractory cases of ADEM, NMOSD (acute), MG, and NMDAR/LGI1/CASPR2/Hashimoto’s encephalitis. With better diagnosis, treatment initiation with TPE is a sustainable and effective immunotherapy for autoimmune neurological diseases in SEA.

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Baek, Seung Moon, Won Sil Seol, Ho Saeng Lee, and Jung In Yoon. "Decreasing the Fouling of Heat Exchanger Plates Using Air Bubbles." Defect and Diffusion Forum 297-301 (April 2010): 1199–204. http://dx.doi.org/10.4028/www.scientific.net/ddf.297-301.1199.

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The heat transfer performance of heat exchanger plate decreases as time goes by. The main reason for this phenomenon is the fouling of the heat exchanger plates. To remove the fouling, we have usually cleaned the plate of heat exchanger using chemicals or polishing brush or cloth with hand after stopping the equipment and disassembling the heat exchanger. However, to clean the plate using these methods, the heat exchanger equipment needs to be stopped and disjointed. In addition, it must be re-jointed after cleaning. Especially, the concern of environmental pollution happens in case of using chemicals. Therefore, we need to develop an automatic fouling removal equipment which can continuously keep high heat transfer efficiency and solve the problem of environmental pollution. So, in this paper, we developed and tested the equipment which can clean the fouling on heat exchanger plates automatically per constant period and interval using air bubbles. The total heat transfer coefficient decreased with a slower tendency when using air bubbles compared to the existing methods. There was 10% higher heat transfer effect air bubbles every 10 minutes for 2 hours to remove the fouling ingredients on the heat transfer surface area concerned to the case without air bubbles after 192 hours.

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Gromadski, Kirill B., Tobias Schümmer, Anne Strømgaard, Charlotte R. Knudsen, Terri Goss Kinzy, and Marina V. Rodnina. "Kinetics of the Interactions between Yeast Elongation Factors 1A and 1Bα, Guanine Nucleotides, and Aminoacyl-tRNA." Journal of Biological Chemistry 282, no. 49 (October 9, 2007): 35629–37. http://dx.doi.org/10.1074/jbc.m707245200.

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The interactions of elongation factor 1A (eEF1A) from Saccharomyces cerevisiae with elongation factor 1Bα (eEF1Bα), guanine nucleotides, and aminoacyl-tRNA were studied kinetically by fluorescence stopped-flow. eEF1A has similar affinities for GDP and GTP, 0.4 and 1.1 μm, respectively. Dissociation of nucleotides from eEF1A in the absence of the guanine nucleotide exchange factor is slow (about 0.1 s–1) and is accelerated by eEF1Bα by 320-fold and 250-fold for GDP and GTP, respectively. The rate constant of eEF1Bα binding to eEF1A (107–108m–1 s–1) is independent of guanine nucleotides. At the concentrations of nucleotides and factors prevailing in the cell, the overall exchange rate is expected to be in the range of 6 s–1, which is compatible with the rate of protein synthesis in the cell. eEF1A·GTP binds Phe-tRNAPhe with a Kd of 3 nm, whereas eEF1A·GDP shows no significant binding, indicating that eEF1A has similar tRNA binding properties as its prokaryotic homolog, EF-Tu.

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Stach, J., R. Kirmse, W. Dietzsch, G. Lassmann, V. K. Belyaeva, and I. N. Marov. "Ligand exchange reactions between copper(II)- and nickel(II)-chelates of different sulfur- and selenium-containing ligands. VI [1]. Kinetics of ligands exchange reactions studied by stopped-flow ESR." Inorganica Chimica Acta 96, no. 1 (January 1985): 55–59. http://dx.doi.org/10.1016/s0020-1693(00)93737-x.

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Fernandez, R., M. J. Lopes, R. F. de Lira, W. F. Dantas, E. J. Cragoe Junior, and G. Malnic. "Mechanism of acidification along cortical distal tubule of the rat." American Journal of Physiology-Renal Physiology 266, no. 2 (February 1, 1994): F218—F226. http://dx.doi.org/10.1152/ajprenal.1994.266.2.f218.

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The cellular mechanism of luminal acidification (bicarbonate reabsorption) was studied in cortical distal tubules of rat kidney. The stopped-flow microperfusion technique was applied to early distal (ED) and late distal (LD) segments, perfused with bicarbonate Ringer solution to which specific inhibitors were added, to measure bicarbonate reabsorption [HCO3 flux (JHCO3)]. pH and transepithelial potential difference (Vt) were recorded by double-barreled H+ exchange resin/reference (1 M KCl) electrodes. Amiloride increased stationary pH and reduced Vt in both early and late segments. Hexamethylene-amiloride (HMA), a specific Na(+)-H+ exchange blocker, reduced JHCO3 in both segments (ED by 43.6 and LD by 40.3%) without affecting Vt. Benzamil, an Na(+)-channel blocker, reduced Vt by 75.9 in ED and 74.9% in LD but had no significant effect on acidification in both segments. The specific inhibitor of H(+)-ATPase, bafilomycin A1, inhibited LD JHCO3 at a concentration of 2 x 10(-7) M by 49%, but ED was inhibited by 24% only at 2 x 10(-6) M. Sch-28080, an inhibitor of gastric H(+)-K(+)-ATPase, reduced JHCO3 by 35% in LD of K(+)-depleted rats but not in control rats and had no effect on ED. These data indicate that, in ED, bicarbonate reabsorption is mediated mostly by Na(+)-H+ exchange. In LD, there is evidence for contribution of Na(+)-H+ exchange, vacuolar H(+)-ATPase, and H(+)-K(+)-ATPase (in K(+)-depleted rats) to bicarbonate reabsorption.

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Suraya, Fatona, Tandiyo Rahayu, and Rebecca Alcuizar. "Models of sports student exchange and the role of their support systems." Journal Sport Area 6, no. 2 (July 21, 2021): 162–74. http://dx.doi.org/10.25299/sportarea.2021.vol6(2).6500.

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Establishing student exchange programs is one way for sports science faculty to support the University to be a world-class university. For several years the faculty has been hosting several batches of a sports students exchange (SSE) program that gains interest and benefits for the students and the institution; however, limited studies have been conducted to present information about the program and its support system. This research is conducted to explain and give an overview of the program as well as explore the support system of the program. Three primary data, namely a depth-interview, questionnaire, and documentation, are gathered to explore the SSE program. The participants are lectures, faculty management, and students involved in the SSE in 2018-2019. The existence of the SSE program was exceedingly influenced by the faculty participation in AUCPESS. A grant from the Dharmasiswa Scholarship that aimed to bolster the exchange of culture and build up the Faculty's International atmosphere was the first booster. However, after the funding stopped, the program ran independently with non-financial support from Rector, faculty management, partner universities, and students. Hence, funding is not a pivotal issue as long as the University and faculty management eager to support the program.

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Zhou, X.-J., M. Chen, S.-X. Wang, F.-D. Zhou, and M.-H. Zhao. "A 3-year follow-up of a patient with acute renal failure caused by thrombotic microangiopathy related to antiphospholipid syndrome: case report." Lupus 26, no. 7 (December 5, 2016): 777–82. http://dx.doi.org/10.1177/0961203316682098.

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Background Microvascular manifestations of antiphospholipid antibody syndrome in the kidneys include acute renal failure, thrombotic microangiopathy and hypertension. Therapy has been largely empiric. Case report A 49-year-old Chinese man presented with anuric acute renal failure without abundant proteinuria and heavy haematuria, but markedly low levels of urinary sodium, potassium and chlorine upon admission. On day 1 of hospitalization, his thrombocytopenia, anaemia and renal failure showed rapid progression. The presence of lupus anticoagulant and vascular ischaemia of the small vessels in renal arteriography were also observed. Anticoagulants, continuous renal replacement therapy, glucocorticoids and six sessions of plasma exchange were started. After the fourth plasma exchange (on day 20), his urine output increased and began to normalize. On day 25, haemodialysis was stopped and his general condition gradually improved. A renal biopsy was subsequently performed, and the histopathological diagnosis was thrombotic microangiopathy due to antiphospholipid antibody syndrome. A further 3-year follow-up showed that his haemoglobin level, platelet count and serum creatinine were within the normal range, with stable blood pressure. Conclusion Treatment modalities such as anticoagulation, immunosuppression and plasma exchange are likely to be necessary when severe acute renal failure combined with thrombotic microangiopathy present in nephropathy of antiphospholipid antibody syndrome.

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Dandy Silva and Widya Setiafindari. "ANALISIS PENURUNAN WAKTU SETUP DENGAN MENGGUNAKAN SINGLE MINUTE EXCHANGE OF DIE UNTUK MENINGKATKAN PRODUKTIVITAS PADA AUTOMATIC MOULDING MACHINE." Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer 3, no. 1 (March 30, 2023): 93–111. http://dx.doi.org/10.51903/juritek.v3i1.1268.

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PT XYZ is a company that has been engaged in metal casting for a long time. This company produces products in the form of wingnut spare parts. The production system used is make to order production. The obstacle faced by PT XYZ was that it was found that the setup operation process activity took quite a long time on average 40 minutes. If it continues to occur it will have an impact on delays. With these problems, PT XYZ reduced the setup time to overcome delays in completing the automatic molding machine wingnut product. Utilize the Single minute exchange of die (SMED) method to speed up setup. The SMED approach distinguishes between internal regulatory and external regulatory activities. Adjustment activities that only Internal adjustments can be made while the machine is stopped. The External Setup setup activity can be performed while the machine is running or operating. By switching to external setup instead of internal setup, setup tasks that were completed when the machine was stopped can now be completed while it is running, thereby reducing setup time. the setup operation of all these activities is carried out when the engine is off or the internal setup produces an average of 101 molds. Meanwhile, the setup time after implementing SMED can be reduced to 26.78 minutes or a decrease of 47.61%. This decrease in setup time increases productivity by 2 molds/day and if in a month with 26 working days it can add 59 molds so that in total it can produce 159 molds/month.

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Suzuki, Takamoto. "The Renminbi Exchange Rate Reform and Its Implications for Asian Markets." China Quarterly of International Strategic Studies 02, no. 04 (January 2016): 485–506. http://dx.doi.org/10.1142/s2377740016500317.

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Up until now, the Renminbi (RMB) reform has been progressing gradually. With the RMB becoming a Special Drawing Right (SDR) component currency, China’s monetary policies will exert significant influence on the international marketplace. The year 2014 witnessed the weakening of the RMB against the U.S. dollar, yet thanks to China’s prudent economic policies, the RMB stopped depreciating further and remained quite stable for the first half of 2015, which benefited not only China itself, but also the United States, Japan, and other Asian economies. Asian markets used to be strongly influenced by the U.S. monetary policy and the performance of the U.S. dollar. However, since the RMB devaluation against U.S. dollar in the summer of 2015, Asian markets have been inclined to move in accordance with the market information from China rather than that from the United States. Although the RMB is not a currency like the euro that has been adopted by a number of countries, it can still exert great impacts on emerging economies in the world. For the RMB to take hold globally, improved fundamentals in emerging economies, an easing in the influence of the RMB-USD exchange rate, and a healthy financial system in China are all necessary. Meanwhile, both China and the United States need to enhance their coordination on macroeconomic policies and guarantee the stability of RMB-USD exchange rate.

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Ivanov, Yuri D., Ivan D. Shumov, Andrey F. Kozlov, Anastasia A. Valueva, Maria O. Ershova, Irina A. Ivanova, Alexander N. Ableev, et al. "Atomic Force Microscopy Study of the Long-Term Effect of the Glycerol Flow, Stopped in a Coiled Heat Exchanger, on Horseradish Peroxidase." Micromachines 15, no. 4 (April 4, 2024): 499. http://dx.doi.org/10.3390/mi15040499.

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Glycerol is employed as a functional component of heat-transfer fluids, which are of use in both bioreactors and various biosensor devices. At the same time, flowing glycerol was reported to cause considerable triboelectric effects. Herein, by using atomic force microscopy (AFM), we have revealed the long-term effect of glycerol flow, stopped in a ground-shielded coiled heat exchanger, on horseradish peroxidase (HRP) adsorption on mica. Namely, the solution of HRP was incubated in the vicinity of the side of the cylindrical coil with stopped glycerol flow, and then HRP was adsorbed from this solution onto a mica substrate. This incubation has been found to markedly increase the content of aggregated enzyme on mica—as compared with the control enzyme sample. We explain the phenomenon observed by the influence of triboelectrically induced electromagnetic fields of non-trivial topology. The results reported should be further considered in the development of flow-based heat exchangers of biosensors and bioreactors intended for operation with enzymes.

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Nagadia, Urja, Niravkumar Kamleshbhai Brahmbhatt, Ghulam Ghous, and Verghese Cherian. "Use of IV Hydration Instead of Exchange Transfusion for Prophylactic Management of Pain Crisis in Homozygous (SS) Sickle Cell Disease Helps Maintain Hgb Levels and Prevents Further Escalation of Iron Overload." Blood 142, Supplement 1 (November 28, 2023): 5307. http://dx.doi.org/10.1182/blood-2023-185325.

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Introduction: Indications for exchange transfusion in the management of sickle cell disease and its complications are over time becoming limited. Currently accepted indications include acute chest syndrome and cerebrovascular accidents only. However, there is often consideration of using exchange transfusions for management of sickle cell pain crisis episodes resistant to opioid-based pain management. This is, however, of questionable efficacy due to concerns of iron overload as well as alloimmunization. The excessive utilization of blood products also presents a significant challenge. Therefore, it is important to explore alternatives to exchange transfusion in the management of pain crisis in sickle cell disease. Method: This study aimed at investigating the effects of transitioning patients with homozygous SS disease from routine exchange transfusions to IV hydration protocols. The main objective was to examine the changes in Hgb levels and the status of iron overload in these patients. A cohort of 16 patients with a Ferritin level above 1000 ng/ml, who were already receiving regular exchange transfusions, were included in the study. Their Hgb levels and Ferritin levels were measured periodically. This group was then given IV hydration twice a week, regardless of whether they were experiencing pain issues. We then compared the Hgb and Ferritin levels during a 6-month period of active exchange transfusions and 6-month period of being on IV hydration protocols. Both periods were a year apart, allowing for adequate homeostatic changes to take place. Additionally, we compared the number of simple transfusions during both these periods. Result: The mean ferritin level in patients getting exchange transfusions was 6097 ng/mL with the mean Hgb level maintained at 7.48 g/dL. During the initial study period, there were 14 exchange transfusion sessions involving 96 units of packed red blood cells (PRBCs). Additionally, 8 units of simple transfusion units were administered during the same period. Interestingly, as this cohort transitioned away from exchange transfusions, the number of simple transfusions increased to 30. Only one exchange transfusion occurred during the second 6-month observation period. During this time, ferritin level stopped increasing, and the mean was measured at 6076 ng/ml. The Hgb levels did show a slight decrease, with the mean being 6.90 g/dL, but the difference was not statistically significant. Conclusion: The findings of this study suggest that the use of IV hydration protocol is effective in managing iron overload issues and maintaining an adequate Hgb level in patients who were previously undergoing routine exchange transfusions to prevent or manage pain crisis episodes. The results indicate that IV hydration should be initiated when ferritin levels increase beyond 1000 ng/ml, rather than waiting for more advanced stages. Moreover, the study shows that even when IV hydration is started at a later stage of iron overload, it still appears to limit further iron accumulation, as evidenced by the stabilization of ferritin levels. Overall, the use of IV hydration as an alternative to routine exchange transfusions holds promise in managing pain crisis and iron overload in sickle cell disease.

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Gradwell, M. H. S., and M. J. van der Merwe. "2-t-Butylbenzothiazole Sulfenamide Accelerated Sulfur Vulcanization of Polyisoprene." Rubber Chemistry and Technology 72, no. 1 (March 1, 1999): 65–73. http://dx.doi.org/10.5254/1.3538795.

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Abstract The mechanism of 2-t-butylbenzothiazole sulfenamide (TBBS) accelerated sulfur vulcanization of polyisoprene was investigated. Samples of compounded rubber were heated in a differential scanning calorimeter to preselected temperatures or degrees of vulcanization, the reaction stopped, and the products analyzed. TBBS polysulfides, formed from the reaction of TBBS with sulfur, react with the rubber chain to form benzothiazole pendent groups and free t-butylamine. The delayed action of TBBS accelerated sulfur vulcanization was shown to be due to an exchange reaction involving benzothiazole terminated pendent groups and TBBS. Crosslinking occurred very rapidly once the TBBS was depleted. Special reference was made to the role of the amine. Reaction mechanisms were proposed to account for the formation of products.

Journal articles on the topic 'Stoppers exchange'

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