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Artigos de revistas sobre o tema "Circulation"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 25 de julho de 2025

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1

Khoja, Leila, Christy Mitchinson, Damien Brown, et al. "Pancreatic circulating tumor cells: Where are they?" Journal of Clinical Oncology 30, no. 15_suppl (2012): e21037-e21037. http://dx.doi.org/10.1200/jco.2012.30.15_suppl.e21037.

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e21037 Background: We previously demonstrated that circulating tumor cell (CTC) numbers in advanced pancreatic carcinoma were low in contrast to other epithelial carcinomas. We hypothesized that pancreatic CTCs may sequest in the liver and conceived a study to explore CTC number in the peripheral and portal circulations of patients undergoing Whipple’s surgery. Methods: Seventeen patients undergoing Whipple’s surgery were recruited prospectively after informed written consent. Blood was collected intra-operatively from the portal vein prior to tumor mobilization and from the peripheral circula

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Miao, Yucong, Shuhua Liu, Yijia Zheng, Shu Wang, and Bicheng Chen. "Numerical Study of the Effects of Topography and Urbanization on the Local Atmospheric Circulations over the Beijing-Tianjin-Hebei, China." Advances in Meteorology 2015 (2015): 1–16. http://dx.doi.org/10.1155/2015/397070.

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The effects of the topography and urbanization on the local atmospheric circulations over the Beijing-Tianjin-Hebei (BTH) region were studied by the weather research and forecasting (WRF) model, as well as the interactions among these local atmospheric circulations. It was found that, in the summer day time, the multiscale thermally induced local atmospheric circulations may exist and interact in the same time over the BTH region; the topography played a role in the strengthening of the sea breeze circulations; after sunset, the inland progress of sea breeze was slowed down by the opposite mou

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Plesca, Elina, Verena Grützun, and Stefan A. Buehler. "How Robust Is the Weakening of the Pacific Walker Circulation in CMIP5 Idealized Transient Climate Simulations?" Journal of Climate 31, no. 1 (2017): 81–97. http://dx.doi.org/10.1175/jcli-d-17-0151.1.

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Abstract The tropical overturning circulations are likely weakening under increased CO2 forcing. However, insufficient understanding of the circulations’ dynamics diminishes the full confidence in such a response. Based on a CMIP5 idealized climate experiment, this study investigates the changes in the Pacific Walker circulation under anthropogenic forcing and the sensitivity of its weakening response to internal variability, general circulation model (GCM) configuration, and indexing method. The sensitivity to internal variability is analyzed by using a 68-member ensemble of the MPI-ESM-LR mo

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Jin, Xin, Shiru Huang, and Xue Lei. "Research on the Impact Mechanism of Green Innovation in Marine Science and Technology Enabling Dual Economic Circulations." Sustainability 16, no. 19 (2024): 8421. http://dx.doi.org/10.3390/su16198421.

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Currently, accelerating the construction of a new development pattern with dual economic circulations is strategically significant for enhancing the autonomy and sustainability of China’s economic development. First of all, this paper, from the perspective of green innovation in marine science and technology, measures its efficiency using the SBM super-efficiency model. Then, a coupling coordination model calculates the coordination degree of dual economic circulations after measuring the domestic and international economic circulations based on the TOPSIS method. Secondly, a two-way fixed eff

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Leete, Art, Elo-Hanna Seljamaa, and Laur Vallikivi. "A Few Impressions and Reflections American Anthropological Association: 109th Annual Meeting. November 17–21, 2010. New Orleans." Folklore: Electronic Journal of Folklore 47 (2011): 185–90. http://dx.doi.org/10.7592/fejf2011.47.circulation.

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Waalewijn, R. A. "Problemen met de circulatie (C: Circulation)." Bijblijven 19, no. 7 (2003): 287–95. http://dx.doi.org/10.1007/bf03059727.

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Cunningham, Stuart A. "Southern Ocean circulation." Archives of Natural History 32, no. 2 (2005): 265–80. http://dx.doi.org/10.3366/anh.2005.32.2.265.

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The Discovery Investigations of the 1930s provided a compelling description of the main elements of the Southern Ocean circulation. Over the intervening years, this has been extended to include ideas on ocean dynamics based on physical principles. In the modern description, the Southern Ocean has two main circulations that are intimately linked: a zonal (west-east) circumpolar circulation and a meridional (north-south) overturning circulation. The Antarctic Circumpolar Current transports around 140 million cubic metres per second west to east around Antarctica. This zonal circulation connects

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Lenz, T., G. D. James, J. H. Laragh, and J. E. Sealey. "Prorenin secretion from human placenta perfused in vitro." American Journal of Physiology-Endocrinology and Metabolism 260, no. 6 (1991): E876—E882. http://dx.doi.org/10.1152/ajpendo.1991.260.6.e876.

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We examined whether renin (prorenin plus renin) is secreted from the human placenta into the maternal or fetal circulation and compared the secretion rate to that of human chorionic gonadotropin (hCG), progesterone, and estradiol. While estradiol and progesterone passed into both circulations, renin (mostly prorenin) and hCG were secreted predominantly into the maternal circulation. To examine if prorenin passed from the maternal to the fetal circulation and vice versa, we perfused both circuits separately with exogenous recombinant human prorenin. No prorenin passed from maternal to fetal cir

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Aquino-Martínez, Lourdes P., Arturo I. Quintanar, Carlos A. Ochoa-Moya, Erika Danaé López-Espinoza, David K. Adams, and Aron Jazcilevich-Diamant. "Urban-Induced Changes on Local Circulation in Complex Terrain: Central Mexico Basin." Atmosphere 12, no. 7 (2021): 904. http://dx.doi.org/10.3390/atmos12070904.

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Land use land cover (LULC) significantly impacts local circulation in the Mexico Basin, particularly wind field circulations such as gap winds, convergence lines, and thermally induced upslope/downslope wind. A case study with a high-pressure system over the Mexico Basin isolates the influence of large-scale synoptic forcing. Numerical simulations reveal a wind system composed of meridional circulation and a zonal component. Thermal pressure gradients between the Mexico basin and its colder surroundings create near-surface convergence lines as part of the meridional circulation. Experiments sh

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10

Hickey, Joanne V. "Cerebral Circulation Demystified." AACN Advanced Critical Care 2, no. 4 (1991): 657–64. http://dx.doi.org/10.4037/15597768-1991-4005.

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Basic anatomic and physiologic concepts related to cerebral circulation are summarized. The arterial blood supply is traced from its origins to the major divisions of anterior and posterior circulation. The circle of Willis, the major arterial vessels and territories, and the peculiarities of the cerebral venous circulation are discussed. Finally, concepts of cerebral circulations are applied to clinical practice to assist the nurse in accurately assessing, monitoring, and predicting human responses to alterations in cerebral blood supply

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11

Walker, Christopher C., and Tapio Schneider. "Eddy Influences on Hadley Circulations: Simulations with an Idealized GCM." Journal of the Atmospheric Sciences 63, no. 12 (2006): 3333–50. http://dx.doi.org/10.1175/jas3821.1.

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An idealized GCM is used to investigate how the strength and meridional extent of the Hadley circulation depend on the planet radius, rotation rate, and thermal driving. Over wide parameter ranges, the strength and meridional extent of the Hadley circulation display clear scaling relations with regime transitions, which are not predicted by existing theories of axisymmetric Hadley circulations. For example, the scaling of the strength as a function of the radiative-equilibrium equator-to-pole temperature contrast exhibits a regime transition corresponding to a regime transition in scaling laws

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12

Ryu, Young-Hee, and Jong-Jin Baik. "Daytime Local Circulations and Their Interactions in the Seoul Metropolitan Area." Journal of Applied Meteorology and Climatology 52, no. 4 (2013): 784–801. http://dx.doi.org/10.1175/jamc-d-12-0157.1.

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AbstractDaytime local circulations and their interactions in the Seoul, South Korea, metropolitan area are investigated using a high-resolution mesoscale model. It is found that the urban-breeze circulation interacts strongly with other local circulations, such as sea-breeze, cross-valley, and river-breeze circulations. Inland penetration of the sea breeze is retarded in the morning when moving over the coastal urban area because of the increased surface roughness but is accelerated in the afternoon after passing through the urban area as a result of the landward-convergent flow induced by urb

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13

Wei, Liu, Zheng Xueli, Li Yunhan, Li Xia, and Liu Li. "Research on the impact effect of multimodal transport on domestic and international dual circulation: Evidence from China’s railway and water transport." PLOS One 20, no. 4 (2025): e0319982. https://doi.org/10.1371/journal.pone.0319982.

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As an important part of the modern integrated transportation system, multimodal transport can promote changes in the transportation structure and serve as a crucial lever for upgrading the logistics industry and promoting domestic and international economic and trade development. Based on panel data from 31 provinces in China from 2017 to 2023, a fixed-effects model was constructed to empirically test the mechanism and impact of multimodal transport on domestic and international dual circulation. The findings reveal that the development of multimodal transport has a positive effect on both dom

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14

Yokoyama, Chie, Edward J. Zipser, and Chuntao Liu. "TRMM-Observed Shallow versus Deep Convection in the Eastern Pacific Related to Large-Scale Circulations in Reanalysis Datasets." Journal of Climate 27, no. 14 (2014): 5575–92. http://dx.doi.org/10.1175/jcli-d-13-00315.1.

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Abstract Over the eastern Pacific, recent studies have shown that a shallow large-scale meridional circulation with its return flow just above the boundary layer coexists with a deep Hadley circulation. This study examines how the vertical structure of large-scale circulations is related to satellite-observed individual precipitation properties over the eastern Pacific in boreal autumn. Three reanalysis datasets are used to describe differences in their behavior. The results are compared among reanalyses and three distinctly different convection periods, which are defined according to their ra

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15

Kim, Hye-Ryeom, Kyung-Ja Ha, Suyeon Moon, Hyoeun Oh, and Sahil Sharma. "Impact of the Indo-Pacific Warm Pool on the Hadley, Walker, and Monsoon Circulations." Atmosphere 11, no. 10 (2020): 1030. http://dx.doi.org/10.3390/atmos11101030.

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The Indo-Pacific warm pool (IPWP) is enclosed by a 28 °C isotherm and plays a vital role in controlling atmospheric circulations. However, the effects of changes in regional warm pool sea surface temperatures (SSTs) remain unexplored. We divided the IPWP into the Indian and Pacific sectors and distinguished their responses to natural variability and global warming. Furthermore, we examined the impacts of the interannual variability (IAV) in warm pool SST on the tropical Hadley, Walker, and monsoon circulations. The Hadley circulation was affected by warm pool SST warming, i.e., warmer SSTs ove

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Wills, Robert C., Xavier J. Levine, and Tapio Schneider. "Local Energetic Constraints on Walker Circulation Strength." Journal of the Atmospheric Sciences 74, no. 6 (2017): 1907–22. http://dx.doi.org/10.1175/jas-d-16-0219.1.

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Abstract The weakening of tropical overturning circulations is a robust response to global warming in climate models and observations. However, there remain open questions on the causes of this change and the extent to which this weakening affects individual circulation features such as the Walker circulation. The study presents idealized GCM simulations of a Walker circulation forced by prescribed ocean heat flux convergence in a slab ocean, where the longwave opacity of the atmosphere is varied to simulate a wide range of climates. The weakening of the Walker circulation with warming results

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17

Endre Nagy, Tibor. "Human blood circulation model based on flow laws of intensity and continuity in relation to earth’s surface gravity." Journal of Lung, Pulmonary & Respiratory Research 10, no. 2 (2023): 46–54. http://dx.doi.org/10.15406/jlprr.2023.10.00301.

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With the help of the physical laws of flow, it is possible to describe the entire human blood circulation. However, this requires precise knowledge of the individual parameters. Within this, the determination of the flow rate included in the law of continuity is essential. Together with the data of the heart and circulation examination procedures, in order to establish the average human blood circulation, an intermediate velocity value must be selected, which is located in the middle between the two extreme velocities of the blood circulation. Another important factor from the point of view of

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18

Wu, Yutian, and Olivier Pauluis. "Examination of Isentropic Circulation Response to a Doubling of Carbon Dioxide Using Statistical Transformed Eulerian Mean*." Journal of the Atmospheric Sciences 70, no. 6 (2013): 1649–67. http://dx.doi.org/10.1175/jas-d-12-0235.1.

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Abstract Responses of the atmospheric circulation to a doubling of CO2 are examined in a global climate model, focusing on the circulation on both dry and moist isentropes. The isentropic circulations are reconstructed using the statistical transformed Eulerian mean (STEM), which approximates the isentropic flow from the Eulerian-mean and second-order moments. This approach also makes it possible to decompose the changes in the circulation into changes in zonal mean and eddy statistics. It is found that, as a consequence of CO2 doubling, the dry isentropic circulation weakens across all latitu

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19

French, Michael M., Howard B. Bluestein, David C. Dowell, Louis J. Wicker, Matthew R. Kramar, and Andrew L. Pazmany. "High-Resolution, Mobile Doppler Radar Observations of Cyclic Mesocyclogenesis in a Supercell." Monthly Weather Review 136, no. 12 (2008): 4997–5016. http://dx.doi.org/10.1175/2008mwr2407.1.

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Abstract On 15 May 2003, two ground-based, mobile, Doppler radars scanned a supercell that moved through the Texas Panhandle and cyclically produced mesocyclones. The two radars collected data from the storm during a rapid cyclic mesocyclogenesis stage and a more slowly evolving tornadic period. A 3-cm-wavelength radar scanned the supercell continuously for a short time after it was cyclic but close to the time of tornadogenesis. A 5-cm-wavelength radar scanned the supercell the entire time it exhibited cyclic behavior and for an additional 30 min after that. The volumetric data obtained with

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20

Wang, Yafei, Jianzhao Qin, and Lijuan Zhu. "The Okhotsk-Japan Circulation Pattern and the Heavy Rainfall in Beijing in 2012 Summer." Advances in Meteorology 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/483970.

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Using station precipitation and reanalysis data, we examined the evolution of the large-scale circulations associated with the heavy rainfall event that occurred around July 21, 2012 (721 heavy rainfall). This study focuses on a role that the large-scale circulations named “the Okhotsk-Japan (OKJ) circulation pattern” played in causing the heavy rainfall case. We found that the 721 heavy rainfall occurred under a background of the OKJ circulation that persisted for about 10 days. However, the pattern was different from the normal OKJ circulation, for this circulation pattern accompanied a bloc

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Jiang, Yunyan, Jinyuan Xin, Ying Wang, et al. "The thermodynamic structures of the planetary boundary layer dominated by synoptic circulations and the regular effect on air pollution in Beijing." Atmospheric Chemistry and Physics 21, no. 8 (2021): 6111–28. http://dx.doi.org/10.5194/acp-21-6111-2021.

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Abstract. To investigate the impacts of multiscale circulations on the planetary boundary layer (PBL), we have carried out the PBL thermodynamic structure field experiment with a Doppler wind profile lidar, a microwave radiometer, and a ceilometer from January 2018 to December 2019 in Beijing. We found that the direct regulatory effect of synoptic circulation worked through transporting and accumulating pollutants in front of mountains in the daytime, while the indirect effect of multiscale circulations worked through coupling mechanisms in the nighttime. The horizontal coupling of different-d

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Pasquier, Benoît, Mark Holzer, Matthew A. Chamberlain, Richard J. Matear, Nathaniel L. Bindoff, and François W. Primeau. "Optimal parameters for the ocean's nutrient, carbon, and oxygen cycles compensate for circulation biases but replumb the biological pump." Biogeosciences 20, no. 14 (2023): 2985–3009. http://dx.doi.org/10.5194/bg-20-2985-2023.

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Abstract. Accurate predictive modeling of the ocean's global carbon and oxygen cycles is challenging because of uncertainties in both biogeochemistry and ocean circulation. Advances over the last decade have made parameter optimization feasible, allowing models to better match observed biogeochemical fields. However, does fitting a biogeochemical model to observed tracers using a circulation with known biases robustly capture the inner workings of the biological pump? Here we embed a mechanistic model of the ocean's coupled nutrient, carbon, and oxygen cycles into two circulations for the curr

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Fernández-Rodriguez, Conrado M., Ignacio R. Prada, Jesús Prieto, et al. "Circulating adrenomedullin in cirrhosis: relationship to hyperdynamic circulation." Journal of Hepatology 29, no. 2 (1998): 250–56. http://dx.doi.org/10.1016/s0168-8278(98)80010-x.

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Jiao, Fangyi, Dongchao Zhang, and Xiyue Zheng. "A study on the mechanisms of building a new development pattern through new urbanization from the perspective of industrial capital circulation." China Political Economy 7, no. 1 (2024): 33–46. http://dx.doi.org/10.1108/cpe-06-2024-039.

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PurposeThis paper analyzes and discusses the fundamental role of new urbanization in the construction of a new development pattern based on the specific practice of China’s new urbanization construction, combining the classical Marxist ideas in urbanization and the theory of the industrial capital circulation, and proposes to remove blockages in the domestic and international circulations through developing new urbanization and construct a new development pattern with the domestic circulation as the mainstay and the domestic and international circulations promoting each other, thereby achievin

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Kuznetsova, Daria, Thibaut Dauhut, and Jean-Pierre Chaboureau. "The Three Atmospheric Circulations over the Indian Ocean and the Maritime Continent and Their Modulation by the Passage of the MJO." Journal of the Atmospheric Sciences 76, no. 2 (2019): 517–31. http://dx.doi.org/10.1175/jas-d-18-0188.1.

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Abstract The passage of the Madden–Julian oscillation (MJO) over the Indian Ocean and the Maritime Continent is investigated during the episode of 23–30 November 2011. A Meso-NH convection-permitting simulation with a horizontal grid spacing of 4 km is examined. The simulation reproduces the MJO signal correctly, showing the eastward propagation of the primary rain activity. The atmospheric overturning is analyzed using the isentropic method, which separates the ascending air with high equivalent potential temperature from the subsiding air with low equivalent potential temperature. Three key

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Kriest, Iris, Paul Kähler, Wolfgang Koeve, Karin Kvale, Volkmar Sauerland, and Andreas Oschlies. "One size fits all? Calibrating an ocean biogeochemistry model for different circulations." Biogeosciences 17, no. 12 (2020): 3057–82. http://dx.doi.org/10.5194/bg-17-3057-2020.

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Abstract. Global biogeochemical ocean models are often tuned to match the observed distributions and fluxes of inorganic and organic quantities. This tuning is typically carried out “by hand”. However, this rather subjective approach might not yield the best fit to observations, is closely linked to the circulation employed and is thus influenced by its specific features and even its faults. We here investigate the effect of model tuning, via objective optimisation, of one biogeochemical model of intermediate complexity when simulated in five different offline circulations. For each circulatio

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Suzuki, Nobuhiro. "On the physical mechanisms of the two-way coupling between a surface wave field and a circulation consisting of a roll and streak." Journal of Fluid Mechanics 881 (October 25, 2019): 906–50. http://dx.doi.org/10.1017/jfm.2019.752.

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The governing equations of a surface wave field and a coexisting roll–streak circulation typical of Langmuir circulations or submesoscale frontal circulations are derived to better describe their two-way interactions. The gradients and vertical velocities of the roll–streak circulation induce wave refraction, amplitude modulation and higher-order waves. These changes then produce wave–wave nonlinear forces and divergence of the wave-induced mass transport, both of which in turn affect the circulation. To accurately represent these processes, both a wave theory and a wave-averaged theory are de

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Lian, Yuchen, Adam P. Showman, Xianyu Tan, and Yongyun Hu. "Influences of Internal Forcing on Atmospheric Circulations of Irradiated Giant Planets." Astrophysical Journal 928, no. 2 (2022): 166. http://dx.doi.org/10.3847/1538-4357/ac5598.

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Abstract Close-in giant planets with strong stellar irradiation show atmospheric circulation patterns with strong equatorial jets and global-scale stationary waves. So far, almost all modeling works on atmospheric circulations of such giant planets have mainly considered external radiation alone, without taking into account the role of internal heat fluxes or just treating it in very simplified ways. Here, we study atmospheric circulations of strongly irradiated giant planets by considering the effect of internal forcing, which is characterized by small-scale stochastic interior thermal pertur

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Nagao, Shigeto. "Structures and Interactions of Quantum Particles Based on the Energy Circulation Theory." Reports in Advances of Physical Sciences 03, no. 01 (2019): 1950001. http://dx.doi.org/10.1142/s2424942419500014.

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Although the quark model is widely accepted, it is unknown what the origin of the electric charge of a quark is and why the charge magnitudes are fractional and different among the [Formula: see text] and [Formula: see text] quarks. Here we propose a novel scheme for quantum particles independent of quantum chromodynamics and quarks. We previously reported the energy circulation theory, in which the fundamental force works between antiparallel energy movements based on momentums, and forms an energy circulation. The electric charge is the momentum in the hidden dimension of an energy circulati

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Yang, Xuanyuan, and Yifa Sheng. "Research on MMC Circulation Suppression Technology." Journal of Physics: Conference Series 2479, no. 1 (2023): 012058. http://dx.doi.org/10.1088/1742-6596/2479/1/012058.

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Abstract Modular multilevel converters (MMCs) are extensively used in flexible high-voltage DC transmission systems. As an important part of them, it plays an important role in the normal use of MMCs. The main additional loss in the system is generated by the second harmonic in the circulating current. By summarizing and comparing current circulation control strategies. Based on the current research status of circulation suppression, we prospect the research direction of the MMC circulating current suppression.

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Nair, Anish Kumar M., K. V. Sambhu Namboodiri, Mahesh C., and Dileep P. K. "Cyclonic and anticyclonic circulations of 850 hPa over India and adjoining areas based on highly packed hand drawn streamline charts : part 1 - characteristics." MAUSAM 76, no. 2 (2025): 553–68. https://doi.org/10.54302/mausam.v76i2.5906.

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Cyclonic (‘C’) and Anticyclonic (‘A’) circulations play a decisive role in deciding the weather of a region. Therefore, understanding the characteristics of circulation and their spatio-temporal distribution has become important. The present exploratory study characterizes circulations of 850 hPa pressure level over India and adjoining regions. Highly packed wind streamlines are drawn for 850 hPa integrating wind data from satellites, radiosondes, pilot balloons and Doppler Weather Radars. ‘C’ and ‘A’ circulations centre points are identified and the characteristics of their distribution are e

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Ji, Shengxian, Fei Xiao, Guisheng Jie, Shan Gao, and Jiamin Ye. "A Power Circulating Suppression Method for Parallel Transient Inverters with Instantaneous Phase Angle Compensation." Energies 17, no. 17 (2024): 4368. http://dx.doi.org/10.3390/en17174368.

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A unidirectional link is typically incorporated into the DC input side of an inverter to ensure the reliability and stability of the microgrid power supply. Due to impedance and control variations among inverters, circulating currents may rapidly arise during the operation of parallel transient inverters. Nonetheless, the unidirectional power circulating in a DC unidirectional link results in energy accumulation on the DC side, causing DC bus voltage pumping and affecting MGs’ operation safety and stability. This paper proposes a non-communication-based circulation suppression strategy to supp

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Suresh, Karthik, and Larissa A. Shimoda. "Lung Circulation." Comprehensive Physiology 6, no. 2 (2016): 897–943. https://doi.org/10.1002/j.2040-4603.2016.tb00688.x.

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ABSTRACTThe circulation of the lung is unique both in volume and function. For example, it is the only organ with two circulations: the pulmonary circulation, the main function of which is gas exchange, and the bronchial circulation, a systemic vascular supply that provides oxygenated blood to the walls of the conducting airways, pulmonary arteries and veins. The pulmonary circulation accommodates the entire cardiac output, maintaining high blood flow at low intravascular arterial pressure. As compared with the systemic circulation, pulmonary arteries have thinner walls with much less vascular

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Chung, Cheng-Ta, Chien-Hsun Wu, and Yi-Hsuan Hung. "Effects of Electric Circulation on the Energy Efficiency of the Power Split e-CVT Hybrid Systems." Energies 11, no. 9 (2018): 2342. http://dx.doi.org/10.3390/en11092342.

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This paper aims at investigating the fundamental characteristics of energy efficiency for power split electronic-continuously-variable-transmission (e-CVT) hybrid systems under the operation of electric circulation, i.e., circulating part of the engine power through the generator and motor in form of electric energy to improve system efficiency as well as perform the continuously-variable-transmission (CVT) functionality. The relations of kinematics and energy conservation for each power component are constructed and analyzed to classify how the operating points of the engine in term of torque

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Kang, Chuyan, Sijia Huo, Yingbo Yue, et al. "Analysis of MMC Circulation Phase Sequence Separation and Research on Flexible Sliding Mode Circulation Suppression Method." Energies 18, no. 4 (2025): 960. https://doi.org/10.3390/en18040960.

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Modular multilevel converter (MMC) circulating current suppression is an effective method in improving power conversion quality. However, due to the complex composition of circulation under a three-phase imbalanced state, as well as the limitations of existing sliding mode circulation suppression methods that can easily cause high-frequency oscillation in the system, the circulation suppression effectiveness still needs to be further improved. Firstly, this article clarifies the phase sequence law and key control factors of the circulation by separating the MMC circulation phase sequence and d

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Ferrari, Raffaele, Louis-Philippe Nadeau, David P. Marshall, Lesley C. Allison, and Helen L. Johnson. "A Model of the Ocean Overturning Circulation with Two Closed Basins and a Reentrant Channel." Journal of Physical Oceanography 47, no. 12 (2017): 2887–906. http://dx.doi.org/10.1175/jpo-d-16-0223.1.

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AbstractZonally averaged models of the ocean overturning circulation miss important zonal exchanges of waters between the Atlantic and Indo-Pacific Oceans. A two-layer, two-basin model that accounts for these exchanges is introduced and suggests that in the present-day climate the overturning circulation is best described as the combination of three circulations: an adiabatic overturning circulation in the Atlantic Ocean associated with transformation of intermediate to deep waters in the north, a diabatic overturning circulation in the Indo-Pacific Ocean associated with transformation of abys

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Yang, Xingtuan, Yanfei Sun, Zhiyong Liu, and Shengyao Jiang. "Natural Circulation Characteristics of a Symmetric Loop under Inclined Conditions." Science and Technology of Nuclear Installations 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/925760.

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Natural circulation is an important process for primary loops of some marine integrated reactors. The reactor works under inclined conditions when severe accidents happen to the ship. In this paper, to investigate the characteristics of natural circulation, experiments were conducted in a symmetric loop under the inclined angle of 0~45°. A CFD model was also set up to predict the behaviors of the loop beyond the experimental scope. Total circulation flow rate decreases with the increase of inclined angle. Meanwhile one circulation is depressed while the other is enhanced, and accordingly the d

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Kim, Dong Wan, and Sukyoung Lee. "The Role of Latent Heating Anomalies in Exciting the Summertime Eurasian Circulation Trend Pattern and High Surface Temperature." Journal of Climate 35, no. 2 (2022): 801–14. http://dx.doi.org/10.1175/jcli-d-21-0392.1.

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Abstract Dynamical mechanisms for the summer Eurasian circulation trend pattern are investigated by analyzing reanalysis data and conducting numerical model simulations. The daily circulations that resemble the Eurasian circulation trend pattern are identified and categorized into two groups based on surface warming signal over central and eastern Europe. In the group with large warm anomaly, the upper-level circulation takes on a wave packet form over Eurasia, and there are enhanced latent heating anomalies centered over the North Sea and suppressed latent heating anomalies over the Caspian S

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giusti, sandra. "closing remarks." Cardiology in the Young 14, S3 (2004): 97. http://dx.doi.org/10.1017/s1047951104006675.

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in the 17th century, william harvey discovered the circulation of the blood, describing at this time the pumping function of the heart and the “in series” disposition of the pulmonary and systemic circulations. these concepts provided the foundation for the development of modern cardiac physiology. during the three centuries that followed the discovery of circulation, many scientists studied and expanded our knowledge of cardiac and pulmonary function. with the description of complex congenital cardiac diseases, in particular functionally univentricular hearts, and with the development of thei

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Kelly, L., J. Kolbe, W. Mitzner, E. W. Spannhake, B. Bromberger-Barnea, and H. Menkes. "Bronchial blood flow affects recovery from constriction in dog lung periphery." Journal of Applied Physiology 60, no. 6 (1986): 1954–59. http://dx.doi.org/10.1152/jappl.1986.60.6.1954.

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We investigated the effect of eliminating the bronchial circulation on recovery time from intravenous histamine challenge in canine lung periphery. Results from animals with intact bronchial circulations were compared with a second group in which the left lower lobe was isolated in situ. The pulmonary artery to this lobe was perfused and a bronchoscope was wedged in a small airway, which provided an index of resistance to airflow through the collateral system. The lobe was challenged with intravenous histamine, and the time constant of recovery (tau) from bronchoconstriction was measured. With

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Heinrich, P., and X. Blanchard. "Simulation of Atmospheric Circulation over Tahiti and of Local Effects on the Transport of 210Pb." Monthly Weather Review 137, no. 6 (2009): 1863–80. http://dx.doi.org/10.1175/2008mwr2648.1.

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Abstract Atmospheric transport of the natural radionuclide 210Pb is simulated by a general circulation model (GCM) and calculated surface concentrations are compared with those recorded at the Tahiti station on a daily scale. Numerical results for 2006 show the underestimation of concentrations for most recorded peaks. The purpose of this paper is to explain the observed discrepancies, to evaluate the GCM physical parameterizations, and to determine by numerical means the concentrations at Tahiti for a pollutant circulating across the South Pacific Ocean. Three meteorological situations in 200

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Pottroff, Christy L. "Circulation." Early American Studies: An Interdisciplinary Journal 16, no. 4 (2018): 621–27. http://dx.doi.org/10.1353/eam.2018.0026.

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Hartroft, W. S. "Circulation." Annals of the New York Academy of Sciences 111, no. 1 (2006): 534–37. http://dx.doi.org/10.1111/j.1749-6632.1963.tb36993.x.

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Agathocleous, Tanya, and Jason R. Rudy. "Circulation." Victorian Literature and Culture 46, no. 3-4 (2018): 621–25. http://dx.doi.org/10.1017/s1060150318000402.

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Wear, Andrew. "Circulation." Lancet 364, no. 9437 (2004): 835. http://dx.doi.org/10.1016/s0140-6736(04)16962-6.

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Kountchev, Jordan. "Circulation." Lancet 364, no. 9448 (2004): 1856. http://dx.doi.org/10.1016/s0140-6736(04)17437-0.

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Galcerà-Tomás, J., J. A. Nuño ade la Rosa, P. Rodriguez, et al. "Circulation." Intensive Care Medicine 18, S2 (1992): S115—S116. http://dx.doi.org/10.1007/bf03216350.

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Sealy, Jon. "Circulation." Appalachian Heritage 46, no. 2 (2018): 88–102. http://dx.doi.org/10.1353/aph.2018.0008.

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Lee, Thomas N., and Leonard J. Pietrafesa. "Circulation." Progress in Oceanography 19, no. 3-4 (1987): 267–312. http://dx.doi.org/10.1016/0079-6611(87)90011-5.

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Eff, Carine, and Isabelle Saint-Saëns. "liberté de circulation vs circulation libérale." Vacarme 41, no. 4 (2007): 84. http://dx.doi.org/10.3917/vaca.041.0084.

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