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Artigos de revistas sobre o tema "Exchange"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 25 de julho de 2025

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1

Mrzygłod, Urszula, and Sabina Nowak. "Stock Exchanges Go Public. The Case of Warsaw Stock Exchange." JOURNAL OF INTERNATIONAL STUDIES 6, no. 2 (2013): 111–23. http://dx.doi.org/10.14254/2071-8330.2013/6-2/10.

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Roto, Roto, Iqmal Tahir, and Umi Nur Sholikhah. "SYNTHESIS OF HYDROTALCITE Zn-Al-SO₄ AS ANION EXCHANGER AND ITS APPLICATION TO TREAT OF POLLLUTANT CONTAINED HEXACYANOFERRAT(II)." Indonesian Journal of Chemistry 8, no. 3 (2010): 307–13. http://dx.doi.org/10.22146/ijc.21583.

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Synthesis of Zn-Al-SO4 hydrotalcite and its application as anion exchanger for hexacyanoferrat (II) have been studied. Synthesis of Zn-Al-SO4 hydrotalcite was carried out by stoichiometric method and hydrothermal treatment. Sulphate in hydrotalcite interlayer was exchanged by hexacyanoferrat (II) that was assumed as pollutant. Kinetics of ion exchange was also investigated. The product of ion exchange was characterized by XRD, IR spectrophotometry and atomic absorption spectrometry. Zn-Al-SO4 hydrotalcite can be obtained by stoichiometric method at pH 8 and followed by hydrothermal treatment.

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PRDIĆ, NEDELJKO. "STOCK EXCHANGE INDICES AS AN INVESTMENT INDICATOR." Kultura polisa, no. 44 (March 8, 2021): 267–78. http://dx.doi.org/10.51738/kpolisa2021.18.1r.4.02.

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Stock exchanges are such specialised market institutions where standardised and tradable goods are traded and exchanged, which means precisely defining the quality and all other performances of goods. Trading is enabled by stock exchange customs and strict rules within the law. Stock exchange indices are the basic indicator of the importance of the stock market in the market on the basis of which decisions on investments in the stock market are made. The aim of this paper is to systematise the knowledge about the historical role of commodity exchanges on the market, but also to indicate the im

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Santos, Jader, André Timpanaro, and Gabriel Landi. "Joint Fluctuation Theorems for Sequential Heat Exchange." Entropy 22, no. 7 (2020): 763. http://dx.doi.org/10.3390/e22070763.

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We study the statistics of heat exchange of a quantum system that collides sequentially with an arbitrary number of ancillas. This can describe, for instance, an accelerated particle going through a bubble chamber. Unlike other approaches in the literature, our focus is on the joint probability distribution that heat Q 1 is exchanged with ancilla 1, heat Q 2 is exchanged with ancilla 2, and so on. This allows us to address questions concerning the correlations between the collisional events. For instance, if in a given realization a large amount of heat is exchanged with the first ancilla, the

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Omar, Ngor THIAM *. Oumar DRAME Samba DIA Mamadou Lamine SOW and Cheikh MBOW. "NUMERICAL STUDY OF THE DYNAMIC AND THERMAL BEHAVIOR OF TWO FLOWS OF A FLUID IN A HEAT EXCHANGER." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 11, no. 10 (2022): 22–30. https://doi.org/10.5281/zenodo.7238662.

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In this work, it is a numerical study of the dynamic and thermal behavior of two counter-current flows of a fluid in a heat exchanger. The exchanger has the shape of two rectangular channels of height H separated by an exchange surface through which the exchanges between the two fluids take place by conduction and of the same length L. We have written the transfer equations which govern our problem by closing it with the boundary conditions. To solve it, we used the finite volume method and wrote a calculation code under Ansys-Fluent. We have determined the variation of isotherms and isocurren

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Confalonieri, Giorgia, Giovanna Vezzalini, Filippo Quattrini, Simona Quartieri, Catherine Dejoie, and Rossella Arletti. "Ce-exchange capacity of zeolite L in different cationic forms: a structural investigation." Journal of Applied Crystallography 54, no. 6 (2021): 1766–74. http://dx.doi.org/10.1107/s1600576721010827.

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Cerium exchange by microporous materials, such as zeolites, has important applications in different fields, for example, rare earth element recovery from waste or catalytic processes. This work investigated the Ce-exchange capacity of zeolite L in three different cationic forms (the as-synthesized K form and Na- and NH4-exchanged ones) from a highly concentrated solution. Chemical analyses and structural investigations allowed determination of the mechanisms involved in the exchanges and give new insights into the interactions occurring between the cations and the zeolite framework. Different

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Shaimerdenova, К. М., E. R. Schrager, A. S. Tussypbaeva, and Zh K. Nausharban. "Investigation of heat exchange processes in vertically arranged heat exchangers." Bulletin of the Karaganda University. "Physics" Series 94, no. 2 (2019): 66–72. http://dx.doi.org/10.31489/2019ph2/66-72.

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Langer, G. A., and T. L. Rich. "A discrete Na-Ca exchange-dependent Ca compartment in rat ventricular cells: exchange and localization." American Journal of Physiology-Cell Physiology 262, no. 5 (1992): C1149—C1153. http://dx.doi.org/10.1152/ajpcell.1992.262.5.c1149.

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Application of a new rapid perfusion (up to 4.8 ml/s) technique to 45Ca-labeled ventricular cells from adult rat heart has defined a discrete intracellular calcium (Ca) compartment with the following characteristics: 1) its exchange is absolutely dependent on operation of the Na-Ca exchanger, i.e., its isotopic content remains constant during washout in the absence of Na and Ca and is released only upon addition of Na and Ca to the perfusate. 2) At an extracellular Ca concentration of 1.0 mM it contains 350 mumol/kg dry wt cells and exchanges with half time of 650 ms. Ca flux from the compartm

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Tlabela, Kholadi, Anneli Douglas, and Felicité Fairer-Wessels. "Generating Opportunities For Tourism Businesses Through Information Exchanges with Visitor Information Centres in South Africa." African Journal of Hospitality, Tourism and Leisure, no. 11(1)2022 (February 28, 2022): 221–38. http://dx.doi.org/10.46222/ajhtl.19770720.222.

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Information exchange is a process through which information, experience and skills are exchanged among stakeholders. While previous studies acknowledge that Visitor Information Centres (VICs) exchange information with various stakeholders, it remains unclear how this exchange contributes to economic opportunities for tourism businesses. The objective of the study is therefore to ascertain whether the information that VICs and tourism businesses exchanges contributes to economic opportunities. A survey was distributed to tourism businesses listed in the databases of government-owned VICs in Sou

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Llamas-Guzmán, Luz P., Elena Lazos Chavero, Hugo R. Perales Rivera, and Alejandro Casas. "Seed Exchange Networks of Native Maize, Beans, and Squash in San Juan Ixtenco and San Luis Huamantla, Tlaxcala, Mexico." Sustainability 14, no. 7 (2022): 3779. http://dx.doi.org/10.3390/su14073779.

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Seed exchange networks among farmers favor circulation of crop varieties and have been discussed as an effective means of crop diversity conservation. This study aims to document the processes and structure of seed exchange networks of native maize, beans, and squash among farmers and other participating sectors (local market or seed banks), analyzing their influence on agrobiodiversity conservation in the municipalities of Ixtenco and Huamantla, in the Mexican state of Tlaxcala. Through interviews, questionnaires, and social network analysis, nodal farmers were identified. In the maize networ

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Ausubel, Lawrence M., and Thayer Morrill. "Sequential Kidney Exchange." American Economic Journal: Microeconomics 6, no. 3 (2014): 265–85. http://dx.doi.org/10.1257/mic.6.3.265.

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The traditional literature on kidney exchange assumes that all components of the exchange must occur simultaneously. Unfortunately, the number of operating rooms required for concurrent surgeries poses a significant constraint on the beneficial exchanges that may be attained. The basic insight of this paper is that incentive compatibility does not require simultaneous exchange; rather, it requires that organ donation occurs no later than the associated organ receipt. Using sequential exchanges may relax the operating room constraint and thereby increase the number of beneficial exchanges. We s

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Morea, Gregory F. "The Establishment and Management of a Production Data Exchange Group." Journal of Ship Production 21, no. 02 (2005): 73–80. http://dx.doi.org/10.5957/jsp.2005.21.2.73.

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The design and construction of any marine vessel designed on a computer-assisted design (CAD) system, from a nuclear aircraft carrier to the smallest work boat, requires the interaction of many electronic databases, all of which must be continually updated for the work to proceed. The exchange of this information, especially geometry, in digital format is accomplished using many different tools and techniques. Much has been presented to the marine community about the tools used, such as the Initial Graphics Exchange Specification (IGES) and the Standard for the Exchange of Product Model Data (

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13

Vest, Joshua R., and Kosali Simon. "Hospitals’ adoption of intra-system information exchange is negatively associated with inter-system information exchange." Journal of the American Medical Informatics Association 25, no. 9 (2018): 1189–96. http://dx.doi.org/10.1093/jamia/ocy058.

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Abstract Introduction U.S. policy on interoperable HIT has focused on increasing inter-system (ie, between different organizations) health information exchange. However, interoperable HIT also supports the movement of information within the same organization (ie, intra-system exchange). Methods We examined the relationship between hospitals’ intra- and inter-system information exchange capabilities among health system hospitals included in the 2010-2014 American Hospital Association’s Annual Health Information Technology Survey. We described the factors associated with hospitals that adopted m

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Vachon, D. T. "Removal of Iron Cyanide from Gold Mill Effluents by Ion Exchange." Water Science and Technology 17, no. 2-3 (1985): 313–24. http://dx.doi.org/10.2166/wst.1985.0140.

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Using a strongly basic anion exchanger (Rohm & Haas Amberlite IRA-958) laboratory ion exchange tests were conducted on the removal of iron cyanide from synthetic and actual gold mill effluents. Variables examined included the effects of pH, concentration and hydraulic loading of the feed on the resin exchange capacity and resin column utilization. The results showed ion exchange to be an effective method of removing iron cyanide to concentrations of less than 3 mg/L. Tests with synthetic gold mill effluents gave resin exchange capacities ranging from 13 to 34 mg CNFe/mL resin depending on

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15

Thibodeaux, Suzanne, Leah Irwin, Lita Jamensky, Kevin Schell, and Una O'Doherty. "More Efficient Exchange of Sickle Red Blood Cells Can be Achieved By Exchanging the Densest Red Blood Cells." Blood 128, no. 22 (2016): 3856. http://dx.doi.org/10.1182/blood.v128.22.3856.3856.

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Abstract Background: In sickle cell disease, it is well established that cells containing two mutated hemoglobins (SS) are denser than cells containing wild-type hemoglobin. We asked whether we could more efficiently exchange red blood cells (RBCs) in sickle cell anemia patients by exploiting the denser property of RBCs containing hemoglobin SS compared to wild-type RBCs. Methods: To probe this question, we performed a series of experiments using the waste bags from sickle cell patients as simulated patients. We exchanged the simulated patient with one RBC volume using recently expired ABO com

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Koo, Seh-Beom. "Korea’s Exchange Rate Stability and Exchange Rate Policy." APEC Studies Association of Korea 17, no. 1 (2025): 35–48. https://doi.org/10.52595/jas.17.1.35.

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Rasgado-Flores, H., and M. P. Blaustein. "Na/Ca exchange in barnacle muscle cells has a stoichiometry of 3 Na+/1 Ca2+." American Journal of Physiology-Cell Physiology 252, no. 5 (1987): C499—C504. http://dx.doi.org/10.1152/ajpcell.1987.252.5.c499.

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The portions of the 45Ca influx and 22Na efflux that were activated by physiological concentrations of intracellular free Ca2+, [Ca2+]i, were studied in internally perfused single giant barnacle muscle cells. Since both fluxes were activated by intracellular Ca2+ (Cai) and the Ca influx was dependent on internal Na+ (Nai), the fluxes appear to be coupled (Na/Ca exchange). Tracer Ca/Ca and Na/Na exchanges were eliminated by employing tris(hydroxymethyl)aminomethane (Tris) as the predominant external cation. Under these circumstances, the ratio of the external Ca2+ (Cao)-dependent, Cai-activated

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18

Patel, Divyang, and Nikita Kagalwala. "The Impact of Exchange Rate on Indian Stock Exchanges like BSE & NSE." International Journal of Scientific Research 2, no. 10 (2012): 1–2. http://dx.doi.org/10.15373/22778179/oct2013/160.

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P., Venkatesan. "National Stock Exchange Vs Bombay Stock Exchange A Comparative Analysis." International Journal of Trend in Scientific Research and Development 3, no. 1 (2018): 659–61. https://doi.org/10.31142/ijtsrd19030.

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India currently has two major stock exchanges. The Bombay Stock Exchange and National Stock Exchange, There are important differences in ownership structure, geographic reach, internal control systems and institutionalised risk management facilities between the Bombay Stock Exchange and the National Stock Exchange. The purpose of this study is to examine if these significant structural differences between these stock exchanges contribute to variations in observed measures of quality of markets. We use a paired comparison approach and document significant differences in liquidity and index pric

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Dickerson, John P., and Tuomas Sandholm. "Multi-Organ Exchange." Journal of Artificial Intelligence Research 60 (November 26, 2017): 639–79. http://dx.doi.org/10.1613/jair.4919.

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Kidney exchange, where candidates with organ failure trade incompatible but willing donors, is a life-saving alternative to the deceased donor waitlist, which has inadequate supply to meet demand. While fielded kidney exchanges see huge benefit from altruistic kidney donors (who give an organ without a paired needy candidate), a significantly higher medical risk to the donor deters similar altruism with livers. In this paper, we begin by exploring the idea of large-scale liver exchange, and show on demographically accurate data that vetted kidney exchange algorithms can be adapted to clear suc

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21

Skvoretz, John, and Michael J. Lovaglia. "Who Exchanges with Whom: Structural Determinants of Exchange Frequency in Negotiated Exchange Networks." Social Psychology Quarterly 58, no. 3 (1995): 163. http://dx.doi.org/10.2307/2787040.

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Koshel, N.D., O.V. Smyrnova, and S.A. Koshel. "Study of Exchange Processes in Ion Exchangers in Electric Fields via Computer Resistometrics. Part 2. Methods and Technology." Elektronnaya Obrabotka Materialov 54(5) (October 15, 2018): 56–67. https://doi.org/10.5281/zenodo.1464855.

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The experimental technique and equipment to study the kinetics of the ion exchange processes in weak electric fields on the ion-exchange resins by computer resisto-metrics method have been described. The interaction scheme of electrical and diffusion ion fields in the solid phase of the ion exchanger has been discussed. It is shown that during the superposition of a weak electric field to the ion exchanger globule, the vectors of the total speed of displacement of ions generate the ellipsoidal surface, displaced to the side of the vector of the electric field strength relative to the center of

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23

Zhang, Liang, and Anlong Zhang. "Study on turbulent flow in <1-2> wave wall tube heat exchanger." Journal of Physics: Conference Series 2076, no. 1 (2021): 012025. http://dx.doi.org/10.1088/1742-6596/2076/1/012025.

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Abstract The traditional straight wall tube heat exchanger has low heat exchange efficiency, in order to solve this problem, the turbulent flow in wave wall tube heat exchanger was studied by numerical simulation. It is found that the unique corrugated structure of the heat exchange tube in the wave wall tube heat exchanger can improve the flow state of the fluid in the heat exchanger. The average pressure drop of heat exchanger gradually increases with the increase of Reynolds number Re. Under the same conditions, the average pressure drop of wave wall tube heat exchanger is lower than that o

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Schilke, Oliver, and Gabriel Rossman. "It’s Only Wrong If It’s Transactional: Moral Perceptions of Obfuscated Exchange." American Sociological Review 83, no. 6 (2018): 1079–107. http://dx.doi.org/10.1177/0003122418806284.

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A wide class of economic exchanges, such as bribery and compensated adoption, are considered morally disreputable precisely because they are seen as economic exchanges. However, parties to these exchanges can structurally obfuscate them by arranging the transfers so as to obscure that a disreputable exchange is occurring at all. In this article, we propose that four obfuscation structures—bundling, brokerage, gift exchange, and pawning—will decrease the moral opprobrium of external audiences by (1) masking intentionality, (2) reducing the explicitness of the reciprocity, and (3) making the exc

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Labeyrie, Vanesse, Mathieu Thomas, Zachary K. Muthamia, and Christian Leclerc. "Seed exchange networks, ethnicity, and sorghum diversity." Proceedings of the National Academy of Sciences 113, no. 1 (2015): 98–103. http://dx.doi.org/10.1073/pnas.1513238112.

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Recent studies investigating the relationship between crop genetic diversity and human cultural diversity patterns showed that seed exchanges are embedded in farmers’ social organization. However, our understanding of the social processes involved remains limited. We investigated how farmers’ membership in three major social groups interacts in shaping sorghum seed exchange networks in a cultural contact zone on Mount Kenya. Farmers are members of residence groups at the local scale and of dialect groups clustered within larger ethnolinguistic units at a wider scale. The Chuka and Tharaka, who

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Lee, Seung-Rae. "Evaluation of Heat Exchange Rate of Different Types of Ground Heat Exchangers." Journal of the Korean Society of Civil Engineers 33, no. 6 (2013): 2393. http://dx.doi.org/10.12652/ksce.2013.33.6.2393.

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Borgese, F., F. Garcia-Romeu, and R. Motais. "Catecholamine-induced transport systems in trout erythrocyte. Na+/H+ countertransport or NaCl cotransport?" Journal of General Physiology 87, no. 4 (1986): 551–66. http://dx.doi.org/10.1085/jgp.87.4.551.

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It has previously been shown (Baroin, A., F. Garcia-Romeu, T. Lamarre, and R. Motais. 1984a, b. Journal of Physiology. 350:137, 356:21; Mahé, Y., F. Garcia-Romeu, and R. Motais. 1985. European Journal of Pharmacology. 116:199) that the addition of catecholamines to an isotonic suspension of nucleated red blood cells of the rainbow trout first stimulates a cAMP-dependent, amiloride-sensitive Na+/H+ exchange. This stimulation seems to be transient. It is followed by a more permanent activation of a coupled entry of Na+ and Cl-, which is inhibited by amiloride but also by inhibitors of band 3 pro

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Brigida, Matt. "THE MARKET VALUE OF DECENTRALISATION." Applied Finance Letters 12, no. 1 (2023): 70–76. http://dx.doi.org/10.24135/afl.v12i1.682.

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A prominent motivation for the use of cryptocurrencies is the system of exchange does not require a central trusted authority. In fact there are a class of decentralised exchanges where participants can exchange cryptocurrencies using a protocol rather than a centralized exchange. This analysis uses the failure of the centralized FTX exchange to estimate the value the market assigns to decentralised versus centralised exchanges. We find the market assigns a significant value to decentralisation.

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NIKOLAICHUK, Olha. "DEVELOPMENT OF EXCHANGE TRADING: CURRENT STATE AND PROSPECTS." Herald of Khmelnytskyi National University. Economic sciences 312, no. 6(2) (2022): 13–19. http://dx.doi.org/10.31891/2307-5740-2022-312-6(2)-2.

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The article analyzes the main trends in the development of global and domestic stock exchange trade. The development trends of the international stock market are considered and characterized. The current state and structure of global exchange trading in commodity and financial derivatives in 2013-2022 is analyzed. An analysis of the structure of the world exchange trade was carried out, in particular its following groups: stock indices, securities, interest rates, currency, energy resources, agricultural products, precious metals. The structure of the world stock market was studied by geograph

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Munger, Michael C. "EUVOLUNTARY OR NOT, EXCHANGE IS JUST." Social Philosophy and Policy 28, no. 2 (2011): 192–211. http://dx.doi.org/10.1017/s0265052510000269.

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AbstractThe arguments for redistribution of wealth, and for prohibiting certain transactions such as price-gouging, both are based in mistaken conceptions of exchange. This paper proposes a neologism, “euvoluntary” exchange, meaning both that the exchange is truly voluntary and that it benefits both parties to the transaction. The argument has two parts: First, all euvoluntary exchanges should be permitted, and there is no justification for redistribution of wealth if disparities result only from euvoluntary exchanges. Second, even exchanges that are not euvoluntary should generally be permitt

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Frazier, Gary L., Robert E. Spekman, and Charles R. O'Neal. "Just-In-Time Exchange Relationships in Industrial Markets." Journal of Marketing 52, no. 4 (1988): 52–67. http://dx.doi.org/10.1177/002224298805200406.

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A new form of relational exchange, commonly referred to as the “just-in-time” (JIT) exchange relationship, has been adopted and implemented by many original equipment manufacturers (OEMs) and suppliers of component parts-materials during the past several years. Though the “exchange relationship” is at the core of the marketing discipline, JIT exchanges have received little attention in the marketing literature. The authors attempt to expand understanding of (1) how JIT exchanges compare with other forms of exchange between suppliers of component parts-materials and OEMs, (2) what conditions ar

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Liebertz, Scott, Jaclyn Bunch, and Thomas Shaw. "Federalism and Public Opinion on Healthcare: The Design of the Affordable Care Act’s Insurance Exchanges and User Experience with the Exchanges." Publius: The Journal of Federalism 50, no. 1 (2019): 55–80. http://dx.doi.org/10.1093/publius/pjz002.

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Abstract Using original survey data and the 2016 American National Election Study (ANES), we examine the effects of healthcare exchange type and user experience on individuals’ support for the Affordable Care Act (ACA). States are divided into three different types of ACA exchange implementation regimes: state-run exchanges, federally operated exchanges, and mixed state-federal exchanges. We hypothesize that individuals in states running their own exchanges will demonstrate greater support for the ACA and individuals with experience using the exchanges will exhibit greater levels of support fo

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Rocquin, Baudry. "'Rates of Exchange' Rather than Intellectual Exchanges." Durkheimian Studies 24, no. 1 (2020): 86–96. http://dx.doi.org/10.3167/ds.2020.240107.

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The newly found exchange of letters between Marcel Mauss and Victor Branford dated 1926 testifies to the active exchanges between both their traditions. Durkheimian sociology owed a great deal to the Branford-Geddes network of colleagues across the Channel, not less than a funding of the republication of their iconic journal, the Année sociologique. On the other hand, Branford was far from apologetic about his own tradition of thought and even went as far as to criticize the Institut Français de Sociologie in the 1920s. All this shows the enduring links between both countries in the field of s

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Bortun, Anatoly I., Lyudmila N. Bortun, and Abraham Clearfield. "Ion Exchange Behavior of the NH4TiOPO4Based Exchanger." Solvent Extraction and Ion Exchange 16, no. 2 (1998): 669–81. http://dx.doi.org/10.1080/07366299808934546.

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INDIVERI, Cesare, Annamaria TONAZZI, Italo STIPANI, and Ferdinando PALMIERI. "The purified and reconstituted ornithine/citrulline carrier from rat liver mitochondria: electrical nature and coupling of the exchange reaction with H+ translocation." Biochemical Journal 327, no. 2 (1997): 349–56. http://dx.doi.org/10.1042/bj3270349.

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The mechanism and the electrical nature of ornithine/citrulline exchange has been investigated in proteoliposomes reconstituted with the ornithine/citrulline carrier purified from rat liver mitochondria. The stoichiometry of the exchanging substrates was close to 1:1. The exchange was not affected by inducing electrogenic flux of K+ with valinomycin. In contrast, the pH gradient generated by the K+/H+ exchanger nigericin in the presence of an outwardly directed K+ gradient stimulated the ornithineout/citrullinein exchange, but not the ornithine/ornithine homoexchange. Experiments in which eith

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Li, Heng. "Study of an Inorganic Ion Exchanger Mg₂Ti_1.25(PO₄)₃." Advanced Materials Research 442 (January 2012): 50–53. http://dx.doi.org/10.4028/www.scientific.net/amr.442.50.

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The ion-exchanger Mg2Ti1.25(PO4)3 of spinel type was prepared by means of the solid state reaction crystallization method. Its ion-exchange properties for alkali ions such as saturation capacity of exchange and distribution coefficient were determined. Mg2Ti1.25(PO4)3 was characterized by virtue of X-ray diffraction method. This inorganic ion-exchanger (Mg2Ti1.25(PO4)3) has the saturation capacity of exchange for Li+ higher than those for other alkali ions, the saturation capacity of exchange for Li+ reaches to 6.0mmol/g, MgTi-750(H) has a higher selectivity of ion exchange for Li+ than for ot

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Jiang, Jin He. "Synthesis of Al_1.75Fe_1.25(PO₄)₃ and its Selectivity to Li⁺ Exchange." Advanced Materials Research 490-495 (March 2012): 3703–6. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.3703.

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The ion-exchanger Al1.75Fe1.25(PO4)3of spinel type was prepared by means of the solid state reaction crystallization method. Its ion-exchange properties for alkali ions such as saturation capacity of exchange and distribution coefficient were determined. Al1.75Fe1.25(PO4)3was characterized by virtue of X-ray diffraction method. This inorganic ion-exchanger (Al1.75Fe1.25(PO4)3) has the saturation capacity of exchange for Li+higher than those for other alkali ions, the saturation capacity of exchange for Li+reaches to 7.1mmol/g, AlFe-720(H) has a higher selectivity of ion exchange for Li+than fo

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Tomasevic-Canovic, Magdalena, Aleksandra Dakovic, Vesna Markovic, and Dragan Stojsic. "The effect of exchangeable cations in clinoptilolite and montmorillonite on the adsorption of aflatoxin B1." Journal of the Serbian Chemical Society 66, no. 8 (2001): 555–61. http://dx.doi.org/10.2298/jsc0108555t.

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The adsorption of aflatoxin B1 (AFB1) by cation-exchanged clinoptilolite zeolitic tuff and montmorillonite was investigated at 37?C and pH 3.8 from an aqueous electrolyte having a composition similar to that of gastric juices of animals. Bothminerals were exchanged from the natural form to the sodium form and then to the Cu2+, Zn2+ and Co2+-rich forms. The cation exchange was different for the different cations, but in all cases the exchanges were larger on montmorillonite than on clinoptilolite. The degree of exchange on montmorillonite was 76 % for copper (from a total of CEC 0.95 meq/g, Cu2

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Kadi, Xhensila. "Advantages Of Stock Exchange Lıstıng." European Scientific Journal, ESJ 12, no. 4 (2016): 190. http://dx.doi.org/10.19044/esj.2016.v12n4p190.

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The Stock Exchange is a regulated market of securities where contracts for the sale and purchase of the financial instruments are stipulated. The financial instruments such as stocks, bonds, derivatives with a definite price are traded and exchanged in the Stock Exchange. In this case the price is determined by the balance of supply and demand. If we would describe the Stock Exchange with an image, we would think a square in which some companies with public offer or companies with public participation operate. In particular, in it we may found industrial companies, financial companies, banks,

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Y. Uppal, Jamshed. "The Role of Satellite Stock Exchanges: A Case Study of the Lahore Stock Exchange." LAHORE JOURNAL OF ECONOMICS 14, no. 2 (2009): 1–47. http://dx.doi.org/10.35536/lje.2009.v14.i2.a1.

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In many countries, capital markets are often served by multiple stock exchanges, typically with one national or dominant exchange and several regional or satellite exchanges. While multiple exchanges create a competitive landscape, they also lead to fragmented liquidity and diseconomies in operations. This paper examines the role of the Lahore Stock Exchange (LSE) in comparison with the country’s dominant exchange, the Karachi Stock Exchange (KSE), in four areas: (i) market efficiency in processing information, (ii) transaction costs, (iii) contribution to price discovery, and (iv) market inte

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Li, Heng. "Synthesis of Al_1.6667Ti(PO₄)₃ and its Selectivity to Li⁺Exchange." Advanced Materials Research 463-464 (February 2012): 165–68. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.165.

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The ion-exchanger Al1.6667Ti(PO4)3 of inverse spinel type was prepared by means of the solid state reaction crystallization method. Its ion-exchange properties for alkali ions such as saturation capacity of exchange and distribution coefficient were determined. Al1.6667Ti(PO4)3 was characterized by virtue of X-ray diffraction method. This inorganic ion-exchanger has the saturation capacity of exchange for Li+ higher than those for other alkali ions, the saturation capacity of exchange for Li+ reaches to 6.6mmol/g.

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Yunvirusaba, Nelson, Jane Aduda, and Ananda Kube. "Volatility Spillover Effects among Securities Exchanges in East Africa." International Journal of Economics and Finance 11, no. 10 (2019): 32. http://dx.doi.org/10.5539/ijef.v11n10p32.

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This paper aims at examining volatility spillover effects among the returns of three out of the four securities exchanges in East Africa. Vector autoregressive model was used to model return series evolution; and, Johansen co-integration test, was further applied to examine any possibilities of co-integration. Dynamic conditional correlation model was then employed to explore the dynamics of conditional variances. Daily closing all share indices data spanning the period 29 February 2008 to 28 February 2018 was used. The results of the study revealed that, there is bidirectional causality betwe

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Bellvydha S. Momin, Smt. "Practices of Trade and Commerce and Usages of Coins by the A·chiks in Northeastern Region." Himalayan Journal of Economics and Business Management 01, no. 01 (2020): 1–3. https://doi.org/10.47310/hjebm.2020.v01i01.007.

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The A·chiks, known for their engagement in trade and commerce since ancient times, relied on agriculture for sustenance while also participating in organized labor exchanges. Renowned for producing high-quality cotton, their goods were sought after in neighboring districts. The first known trader among them, Gonga, exchanged cotton for gold and coins, marking the beginning of economic exchanges. The use of coins as a medium of exchange is evident in various A·chik folktales, highlighting the importance of trade and commerce in their society.

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KUKSA, Ihor, Serhii AREFIEV, and Iryna HNATENKO. "EXCHANGE ACTIVITY IN THE SYSTEM OF NATIONAL ECONOMY." Ukrainian Journal of Applied Economics 5, no. 3 (2020): 135–43. http://dx.doi.org/10.36887/2415-8453-2020-3-14.

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Introduction. Exchange activity occupies an important place in the financial services market and in the system of the national economy as a whole. At the same time, the development of such ac-tivities is characterized by significant problems and obstacles that cause its inertia. There is a need to review the main trends in the field of exchange activities and identify measures to improve it. The purpose of the article is to consider the exchange activity and the main trends of its functioning in the system of modern national economy. Results of this study: The features, classification of excha

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Vaníček, Petr. "Analysis and comparison of chosen FX – strategy." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 54, no. 6 (2006): 209–22. http://dx.doi.org/10.11118/actaun200654060209.

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The article is focused on possibilities of profit of chosen FX instruments by proceeding of foreign exchange risk. The foreign exchanges risk affect economic result of each economic subject. The foreign exchanges risk ensue unexpectible change of foreign exchange rate. Economic subjects pursue in exchange market that are concern on hedging of exchange risk during doing business and financial contracts. The most discussed problems in this article are the possibilies of present products in financials markets, that can help in hedging of exchange risk. The article is concentrated mainly on chosen

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Nath, K. V. Surendra, and S. N. Tandon. "Synthesis and characterization of a new crystalline tin(IV) arsenophosphate ion exchanger." Canadian Journal of Chemistry 68, no. 2 (1990): 346–49. http://dx.doi.org/10.1139/v90-050.

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A new crystalline layered inorganic ion exchanger tin(IV) arsenophosphate with the formula Sn(HAsO4)(HPO4)•H2O has been prepared by refluxing the amorphous precursor. This exchanger has been characterized by X-ray powder pattern, chemical analysis, IR spectra, and thermal dehydration. Its ion exchange behaviour towards sodium ions is reported. The exchanger has an exchange capacity of 5.36 mequiv./g for Na+. The performance of tin(IV) arsenophosphate is compared with crystalline tin(IV) phosphate and arsenate. Keywords: cation exchanger, crystalline tin(IV) arsenophosphate, ion exchange, therm

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Sung, Pildoo, Rahul Malhotra, Grand Cheng, and Angelique Chan. "TRANSITIONS IN SOCIAL SUPPORT EXCHANGE PROFILES OVER TIME AMONG OLDER ADULTS." Innovation in Aging 6, Supplement_1 (2022): 307–8. http://dx.doi.org/10.1093/geroni/igac059.1218.

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Abstract Despite increasing interest in social support exchanges among older adults, little is known about the interplay between giving and receiving social support, how social support exchanges change over time, and factors associated with such change. Using data on 1,305 older Singaporeans participating in two waves of a national, longitudinal survey conducted in 2016-2017 and 2019, we investigated (1) distinct social support exchange profiles that comprise different types of giving and receiving social support, (2) transitions in social support exchange profiles over time, and (3) associati

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Kruzel, Marcin, Tadeusz Bohdal, and Krzysztof Dutkowski. "Heat Transfer Enhancement in a 3D-Printed Compact Heat Exchanger." Energies 17, no. 18 (2024): 4754. http://dx.doi.org/10.3390/en17184754.

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The study describes experimental data on thermal tests during the condensation of HFE7100 refrigerant in a compact heat exchanger. The heat exchanger was manufactured using the additive 3D printing in metal. The material is AISI 316L steel. MPCM slurry was used as the heat exchanger coolant, and water was used as the reference medium. The refrigerant was condensed on a bundle of circular tubes made of steel with an internal/external diameter of di/de = 2/3 mm, while a mixture of water and phase change materials as the coolant flowed through the channels. Few studies consider the heat exchange

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Thomason, Erin Elizabeth. "Owing the daughter-in-law: Bridewealth and the dynamics of intergenerational care in rural China." Sociological Review 73, no. 4 (2025): 771–88. https://doi.org/10.1177/00380261251347743.

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Bridewealth is one of the first gifts exchanged between the patriline and an incoming daughter-in-law, yet it has become a visible symbol of the contemporary reversal of traditional age-based authority—particularly provoking complaints from older women. Despite their protests, the older generation continues to make significant sacrifices of time and finances to provide expensive bridewealth packages. Through analysis of ethnographic scenes in rural Henan, China, I complicate the notion of bridewealth as intergenerational gift exchange. My analysis challenges foundational assumptions in exchang

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Hu, Tianshen, Ning Zhang, Joseph Mcdevitt, et al. "Comparative Evaluation of Nonprocedural Nephrostomy-Related Complications in Patients with Ureteric Obstruction due to Cancer versus Other Causes: Is the Protocol of Routine 3-month Nephrostomy Exchange Optimal for Both Disease Processes?" Journal of Clinical Interventional Radiology ISVIR 02, no. 01 (2018): 023–26. http://dx.doi.org/10.1055/s-0038-1641674.

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Abstract Purpose To evaluate nonprocedural percutaneous nephrostomy (PCN) complications and assess whether the protocol of routine 3-month exchange of PCN is optimal in patients with malignant ureteral obstruction (MUO) and benign ureteral obstruction (BUO). Materials and Methods Retrospective study of 103 patients with a mean age of 48 years (36 men, 67 women) who underwent PCN placement and subsequent PCN exchanges between January 2011 and January 2014 at the institution was conducted. Comparisons of the number of catheter days for those with routine exchange and emergency exchange due to tu

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