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Journal articles on the topic 'Circular circulation'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Liu, Sanhong, Ying Xie, and Wen Liang. "Optimisation of the Circular Economy Based on the Resource Circulation Equation." Sustainability 16, no. 15 (2024): 6514. http://dx.doi.org/10.3390/su16156514.

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The lack of effective evaluation methods and implementation guidelines has led to frequent obstacles in the process of circular economy in enterprises. The efficiency equation for resource circulation can effectively evaluate the efficiency of an enterprise’s circular economy resource circulation from three perspectives: input, circulation, and output. Additionally, it delves into each link to identify weak points, offering guidance for optimising the enterprise’s circular economy. Utilising a value flow analysis within the context of a circular economy, this paper evaluates circular economy e

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Illés, Sándor. "Circulation of immigrants to Hungary." Migration Letters 12, no. 2 (2015): 152–61. http://dx.doi.org/10.33182/ml.v12i2.249.

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Abstract We measure the demographic patterns associated with international circular migration. Firstly, we define the circulation within the conceptual framework of transnationalism. Secondly, we create macro-scale data bank on long-term international circular migrants based on an original statistical method. Thirdly, we seek to gain further insight into the composition of international circular immigrants by gender, age, and family status. Conclusions indicate the need for future research.

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Halada, Kohmei. "Activities of Circular Economy in Japan - Towards Global Multi-Value Circulation –." International Journal of Automation Technology 14, no. 6 (2020): 867–72. http://dx.doi.org/10.20965/ijat.2020.p0867.

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“The Forum of Global Multi-Value Circulation” is the name of forum on Circular Economy in Japan. This forum was launched at June 2018 to discuss and exchange the information on the movement towards the circular economy. Companies that handles production, supply, distribution, and circulation in Japan join the Forum of Global Multi-Value Circulation. In addition, leading universities and national research institutes also join it. The first part of this paper introduces the concept of Global Multi-Value Circulation. In addition, as results of the discussion of the forum, the focus of attention i

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Fathullah, Hardi S., Hirsh M. Majid, Chro H. Ahmed, Sulleyman H. Sourkan, Karzan S. Ismael, and Balen Z. Abdulsamad. "Traffic Circulation Efficiency of Elliptical Roundabouts." ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY 11, no. 2 (2023): 65–72. http://dx.doi.org/10.14500/aro.11150.

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This paper investigates the impact of geometry of central island of roundabout on operational performance in terms of delay and capacity measures. A roundabout with an elliptical central island having major and minor axes of 63 and 44m respectively was selected as a case study. Using SIDRA Intersection software two simulation models are developed while considering two geometric shapes of central island; one with an elliptical shape and the other with a circular shape. The peak traffic volume of each approach was assigned to both models as a preliminary simulation then twelve scenarios were gen

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Dritschel, D. G., P. H. Diamond, and S. M. Tobias. "Circulation conservation and vortex breakup in magnetohydrodynamics at low magnetic Prandtl number." Journal of Fluid Mechanics 857 (October 15, 2018): 38–60. http://dx.doi.org/10.1017/jfm.2018.719.

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In this paper we examine the role of weak magnetic fields in breaking Kelvin’s circulation theorem and in vortex breakup in two-dimensional magnetohydrodynamics for the physically important case of a fluid with low magnetic Prandtl number (low $Pm$ ). We consider three canonical inviscid solutions for the purely hydrodynamical problem, namely a Gaussian vortex, a circular vortex patch and an elliptical vortex patch. We examine how magnetic fields lead to an initial loss of circulation $\unicode[STIX]{x1D6E4}$ and attempt to derive scaling laws for the loss of circulation as a function of field

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Kawaharada, Tadashi, Shuuji Maeda, and Hidefumi Ejima. "Circulation Technology Supporting a Regional Circular and Ecological Sphere:." Material Cycles and Waste Management Research 32, no. 3 (2021): 204–13. http://dx.doi.org/10.3985/mcwmr.32.204.

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KURODA, Shinji, and Yasuhiro NAKAMURA. "Trends in Plastic Circulation Towards Achieving a Circular Economy." Journal of The Institute of Electrical Engineers of Japan 145, no. 1 (2025): 34–37. https://doi.org/10.1541/ieejjournal.145.34.

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Ilmeneva, V. A. "Specifics of Legal Regulation of Production and Consumption Waste Inclusion in Economic Turnover." Actual Problems of Russian Law 19, no. 7 (2024): 188–94. http://dx.doi.org/10.17803/1994-1471.2024.164.7.188-194.

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The paper is devoted to the problem of inclusion of waste into economic turnover, which is solved within the framework of circular economy. Legal regulation of the circular economy is formed at the level of strategic planning documents and individual motives of persons in whose activities waste was generated. According to the author, for the sustainable use of substances that are currently classified as waste, the introduction of legal mechanisms for a circular economy into Russian legislation is required. Such changes, on the one hand, will reinforce the right of a person to classify a substa

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Abdillah, Muhammad Zikri, and Afrian Raus. "IMPLEMENTASI INSTRUKSI DIRJEN BIMAS ISLAM NOMOR: Kep/D/101/1978 TENTANG TUNTUNAN PENGERAS SUARA DI MASJID, LANGGAR, DAN MUSHOLA DALAM KONTEKS PLURALISME DAN PERSPEKTIF HUKUM TATA NEGARA ISLAM (Studi Kasus Masyarakat Kota Medan)." JISRAH: Jurnal Integrasi Ilmu Syariah 2, no. 1 (2021): 273. http://dx.doi.org/10.31958/jisrah.v2i1.3227.

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The main problem in this study is how is the condition of religious communities after the circulation of the Directive of the Guidance and Guidance of the Islamic Community Guidance Number: Kep/D/101/1978 on Guidance for Loud Speakers in Mosques, Langgar and Mushola and how it is implemented in the context of pluralism and then see the policy in terms of perspective Islamic constitutional law. The purpose of this study is to describe how the conditions of worship of religious people before and after the circulation of the circular letter and to know how the implementation of the circular Direc

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Yin, Chong, Yingxin Cui, Yue Liu, and Xiaoni Su. "Construction and Structural Analysis of Inter-Regional Industrial Circular Network: A Case of the Middle and Lower Reaches of the Yellow River in China." Complexity 2022 (December 9, 2022): 1–14. http://dx.doi.org/10.1155/2022/8563711.

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Imbalance, incoordination, and inter-regional economic segmentation of the middle and lower reaches of the Yellow River (MLYR) have brought challenges to high-quality development in the Yellow River basin. To solve the problem, from the perspective of optimization of inter-regional economic circulation, combining input-output technology and complex network model, we proposed a systematic framework for structural analysis of circular economy and applied it in analysis of economic circulation of the MLYR. Firstly, we defined the inter-regional industrial circular network (ICN) and proposed the c

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Çimen, Ömer. "Development of a Circular Building Lifecycle Framework: Inception to Circulation." Results in Engineering 17 (March 2023): 100861. http://dx.doi.org/10.1016/j.rineng.2022.100861.

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12

Mysko, Volodymyr. "Circular coins of European countries: history, description, systematization, methods of application in geography lessons." 33, no. 33 (August 1, 2021): 30–40. http://dx.doi.org/10.26565/2075-1893-2021-33-04.

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The article highlights the importance of the implementation of competency-based learning in modern school, which requires, above all, activation of mental activity of students and development of their creative abilities. The purpose of this article is to review and systematize circulation of coins of European countries, to study images of physical and socio-geographical objects, processes and phenomena on coins. It is important to highlight historical aspects of formation and functioning of the monetary system on the European continent, present their vision of optimal use of metal banknotes in

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Kyriakopoulos, Grigorios, Vasilis Kapsalis, Konstantinos Aravossis, Miltiadis Zamparas, and Alexandros Mitsikas. "Evaluating Circular Economy under a Multi-Parametric Approach: A Technological Review." Sustainability 11, no. 21 (2019): 6139. http://dx.doi.org/10.3390/su11216139.

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A circular economy (CE) is conceptualized under different rounds of materials and energy cycling flows and is a matter of a three-level deployment: inter-enterprise circulation, regional circulation, and social circulation. Regarding them, the aim of this research was to get an update on the current technological advances and the perspectives of its implementation. Thus, a multi-parametric approach has been conducted to analyze the functionality of technologies in wastewater treatment, organic waste management, agrarian development, and food waste in the context of CE. Beside the narrative of

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14

Pierrehumbert, Raymond T., and Mark Hammond. "Atmospheric Circulation of Tide-Locked Exoplanets." Annual Review of Fluid Mechanics 51, no. 1 (2019): 275–303. http://dx.doi.org/10.1146/annurev-fluid-010518-040516.

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Tide-locked planets are planets in which tidal stresses from the host star have spun down the planet's rotation to the point where its length of sidereal day equals its length of year. In a nearly circular orbit, such planets have a permanent dayside and a permanent nightside, leading to extreme heating contrasts. In this article, the atmospheric circulations forced by this heating contrast are explored, with a focus on terrestrial planets; here, “terrestrial” refers to planets with a condensed solid or liquid surface at which most of the incident stellar radiation is absorbed and does not imp

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Beran, Philip S., and Fred E. C. Culick. "The role of non-uniqueness in the development of vortex breakdown in tubes." Journal of Fluid Mechanics 242 (September 1992): 491–527. http://dx.doi.org/10.1017/s0022112092002477.

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Numerical solutions of viscous, swirling flows through circular pipes of constant radius and circular pipes with throats have been obtained. Solutions were computed for several values of vortex circulation, Reynolds number and throat/inlet area ratio, under the assumptions of steady flow, rotational symmetry and frictionless flow at the pipe wall. When the Reynolds number is sufficiently large, vortex breakdown occurs abruptly with increased circulation as a result of the existence of non-unique solutions. Solution paths for Reynolds numbers exceeding approximately 1000 are characterized by an

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16

Xie, Yun Feng, Xu Bin Zhang, Yan Wang, and Wang Feng Cai. "CFD Simulation on Circulation within the Liquid Slug under Gas-Liquid Taylor Flow in Circular Capillary." Advanced Materials Research 482-484 (February 2012): 274–78. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.274.

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Computational Fluid Dynamics (CFD) was used to simulate the circulation within the liquid slug on gas-liquid Taylor flow in circular capillaries. The velocity profile within liquid slug was studied, the strength of circulation was considered. The separate influences of the gas bubble velocity， Taylor unit length, capillary diameter and liquid film thickness on the internal circulation in liquid slug were investigated. Parabolic velocity distribution inside liquid was obtained and found to in good agreement with the literature report. The strength of circulation was mainly determined by the gas

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17

Yi, Sora. "Evaluation and development of Korea’s national plan for resource circulation towards a circular economy." Energy & Environment 31, no. 7 (2019): 1129–46. http://dx.doi.org/10.1177/0958305x19876055.

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In light of the growing attention to the need for establishing a lifecycle-oriented circular economy and to promote resource circulation to maximize the utilization of limited resources, this paper presents a case study on setting-up new national-level indicators and targets in accordance to the shift in the national waste management paradigm from waste treatment to resource circulation, which is being initiated in multiple countries around the world. Specifically, using the case of Korea, which recently implemented its new Framework Act for Resource Circulation, this study illustrates the pro

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Chen, Cheng, Stephen H. Lubow, and Rebecca G. Martin. "Orbital dynamics of two circumbinary planets around misaligned eccentric binaries." Monthly Notices of the Royal Astronomical Society 510, no. 1 (2021): 351–65. http://dx.doi.org/10.1093/mnras/stab3488.

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ABSTRACT We investigate the orbital dynamics of circumbinary planetary systems with two planets around a circular or eccentric orbit binary. The orbits of the two planets are initially circular and coplanar to each other, but misaligned with respect to the binary orbital plane. The binary–planet and planet–planet interactions result in complex planet tilt oscillations. We use analytical models and numerical simulations to explore the effects of various values of the planet semimajor axes, binary eccentricity, and initial inclination. Around a circular orbit binary, secular tilt oscillations ar

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19

Khodakyvskyy, Volodymyr. "Diffusion of resource circulation as a methodological basis for agribusiness development." Problems and prospects of economics and management, no. 1(41) (May 16, 2025): 189–200. https://doi.org/10.25140/2411-5215-2025-1(41)-189-200.

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The article examines the diffusion of the resource circularity concept as a modern methodological basis for sustainable development of agribusiness in Ukraine. The relevance of the topic is due to the need to rethink approaches to the use of resources in the context of martial law, economic instability, and acute shortages of natural, material, technical, and financial resources. The author analyses the transformation of circular economy models - from the basic 3R concept to the extended 6R and 9R frameworks - with a focus on their adaptation to the needs of the domestic agricultural sector. T

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20

Zhang, Yi, Hua Ling Song, Chun Lei Li, and Chuan Peng Wang. "Research on the Circular Economy Mode of Modern Coal Mine - Case Study on the Development of Xishan Coal Mine Areas." Advanced Materials Research 361-363 (October 2011): 1337–41. http://dx.doi.org/10.4028/www.scientific.net/amr.361-363.1337.

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For studying the circular mechanism and the operating mode of modern mine, this paper reviewed the current development situations of circular economy modes and some typical circular economy parks in coal mining industry at home and abroad. With the Xishan coal mine areas as the investigated objective, which operated by Xishan Coal-electricity Group in Shanxi Province of China, the characterized circular economy mode is put forwarded and concluded as “33386” development mode. Furthermore, the structure and industrial chains of Xishan circular economy system are researched in whole and interpret

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21

GOLOVINA, T. A., and I. L. AVDEEVA. "DEVELOPMENT OF CIRCULAR ECONOMY IN THE SPHERE OF WASTE CIRCULATION IN THE ARCTIC ZONE." Central Russian Journal of Social Sciences 19, no. 1 (2024): 172–90. http://dx.doi.org/10.22394/2071-2367-2024-19-1-172-190.

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The relevance of this study is due to the need to introduce the concept of circular economy in the economic sectors of the constituent entities of the Arctic zone of the Russian Federation, taking into account the increase in the total amount of household and industrial waste from business structures and the population. The circular economy is a new economic model in which secondary raw materials are involved in economic circulation, that is, the production cycle is closed, which gives economic and environmental effects. The purpose is to substantiate the feasibility of applying the concept of

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22

Wang, Huan Shun, Jin Cheng Zhu, Liang Zheng Yan, Cheng Xian Lin, Zheng Yuan Yan, and Xue Cheng Jiao. "Accelerate the Rural Ecological Environment in Dalian Actively Promote the Development of Circular Economy." Advanced Materials Research 361-363 (October 2011): 1539–46. http://dx.doi.org/10.4028/www.scientific.net/amr.361-363.1539.

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This paper introduces the "second Five-Year" period,Comprehensive management of rural pollution in Dalian,Ecological protection and construction of major initiatives,Establish and improve the rural garden, village and township enterprises in villages and the development of circular economy model,Actively promote the sustainable development of circular economy in rural areas,Care at home and abroad for economic development of rural circulation and reference reference peers.

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Danilov, V. I., and S. N. Martynenko. "System of cerebral blood circulation regulation in patients with tumors of the chiasm-sellar region." Kazan medical journal 78, no. 6 (1997): 451–53. http://dx.doi.org/10.17816/kazmj83691.

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The state of regulatory mechanisms of cerebral blood circulation in patients with tumors of the chiasm sellar region before surgical intervention is studied. The disorders of circular supply of homeostasis of the brain in carotid and vertebrobasilar basins are revealed. The necessity of control of the state of cerebral blood circulation system and pharmacological correction of its disorders before operation in these patients is noted.

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Martins, Nuno M. C., and Dídia I. C. Covas. "Induced Circulation by Plunging and Submerged Jets in Circular Water Storage Tanks Using CFD." Water 14, no. 8 (2022): 1277. http://dx.doi.org/10.3390/w14081277.

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Water circulation in storage tanks significantly impacts water quality in distribution networks since old water tends to have low residual chlorine concentrations that are insufficient to neutralize microbial regeneration. Their large capacity and long residence times result in uneven mixing, which can accelerate the disinfectant decay and the formation of potentially carcinogenic disinfection by-products. The phenomenon is strongly related to the tank inflow conditions, since there are no active mixing devices. This paper presents a comprehensive analysis of the flow dynamics in circular stor

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Ren, Zhi-Feng, Zhi-Guo Luo, Fan-Xia Meng, et al. "Physical Simulation on Molten Steel Flow Characteristics of RH Vacuum Chamber with Arched Snorkels." Advances in Materials Science and Engineering 2020 (August 30, 2020): 1–10. http://dx.doi.org/10.1155/2020/6525096.

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The RH vacuum refining technology is a vitally powerful method of producing clean steel. The inner diameter of traditional circular snorkel is very difficult to be increased owing to the metallurgical refractory thickness around the snorkels and the limitation of the area under the vacuum chamber, limiting the increase in refining efficiency. In order to improve the refining efficiency of the RH reactor, a new designed RH degasser with an optimized arched snorkel is established. This design replaces the traditional two circular snorkels structure with the two arched snorkels and greatly enhanc

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SADCHENKO, Оlena, Yuliia ZABALDINA, Zoreslava LIULCHAK, Lilia BUBLYK, and Olena KANISHCHENKO. "The Impact of Marketing Tools on the Recyclables Circulation in the Circular Economy." Theoretical and Practical Research in Economic Fields 15, no. 4 (2024): 1051. https://doi.org/10.14505/tpref.v14.4(32).20.

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Increasing the efficiency of the recyclables circulation is a generally recognized necessity in view of the worsening of environmental problems. In this context, marketing plays an important role as an effective stimulus for the transition to a circular economy. The aim of the study is to determine marketing tools capable of influencing the improvement of the efficiency of the recyclables circulation, in accordance with the determined aspects of green growth. The work used the methods of correlation, regression, and statistical analysis, as well as case studies. The conducted research proved t

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Tao, Zhao Yun, Xin Jian Li, and Pei Li Han. "The Research of Developing Circular Economy in Enterprise by Using Closed-Circuit Circulation Principle." Advanced Materials Research 524-527 (May 2012): 3260–63. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.3260.

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Since the reform and opening up, China's economic construction has made remarkable achievements, but the extensive mode of economic growth brought about by the growing environmental problems. The real way out is to apply the theory of circular economy, the use of environmentally sounds of the means of production, from the source to reduce pollution and achieve development in harmony with the environment. This article describes the recent years, some scholars to study the application of circular economy and business results, and proposed vision for the future.

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Perne, Teos, Marko Šetinc Ph.D, and Tine Seljak. "INNOVATIVE GASIFICATION TECHNOLOGY FOR THE CIRCULAR ECONOMY." Journal of Energy Technology 13, no. 3 (2024): 11–26. https://doi.org/10.18690/jet.13.3.11-26.2020.

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This article presents a novel gasification technology process in the context of achieving carbon neutrality by establishing a sustainable circulation of carbonaceous materials with a focus on the production of virgin materials from various kinds of waste. The technology can alleviate the key limitations of existing gasification systems, which are the production and management of residue tars. The innovative technology process re-utilizes tars within the reaction itself, enabling an endless cycle of carbon. It also ensures high flexibility for efficiently handling heterogenic waste materials.

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Obasaju, E. D., P. W. Bearman, and J. M. R. Graham. "A study of forces, circulation and vortex patterns around a circular cylinder in oscillating flow." Journal of Fluid Mechanics 196 (November 1988): 467–94. http://dx.doi.org/10.1017/s0022112088002782.

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Measurements of sectional and total forces and the spanwise correlation of vortex shedding are presented for a circular cylinder in planar oscillatory flow at Keulegan-Carpenter numbers, KC, in the range from about 4 to 55. The viscous parameter β is in the range from around 100 to 1665. Circulation measurements around a circuit close to and enclosing the cylinder, are also presented. A mode-averaging technique was used for both sectional forces and circulation measurements and this gave, for typical modes of vortex shedding, time histories over an average cycle. The transverse force and the c

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Putra, Ferdian Ahya Al, Septyanto Galan Prakoso, and Rahma Sintya Devi. "“Made in China 2025 Initiative” and Dual Circulation Economy: Reducing Dependence on U.S. Technology." Jurnal Global & Strategis 18, no. 2 (2024): 383–408. http://dx.doi.org/10.20473/jgs.18.2.2024.383-408.

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The “Made in China” 2025 Initiative and Dual Circular Economy emerged as strategies to propel China towards becoming a global leader in advanced technologies. It also aims to reduce dependence on foreign technology products, particularly from the United States, since the increased geopolitical tensions and trade disputes arose between the two countries. Meanwhile, the Dual Circulation Economy can be perceived as an economic strategy emphasizing domestic and international circulation of goods, services, and technologies. This strategy prioritizes bolstering domestic innovation, production, and

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Renfors, Sanna-Mari, and Ted Wendt. "Restaurants without Bins: How Does a Circular Restaurant Operate?" Sustainability 16, no. 6 (2024): 2312. http://dx.doi.org/10.3390/su16062312.

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The circular economy is seen as a potential solution to tackle the environmental concerns of the restaurant industry, offering a set of practices to support the industry in achieving more efficient use of resources and becoming more sustainable. However, studies that focus on the circular economy as a theoretical framework in the restaurant context are scarce. Thus, this study aims to increase understanding of how a circular restaurant operates in practice and provide insight into the circular transformation of restaurants. This article adopts a qualitative, multiple case study methodology, as

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Dart, Andrew J., Jack R. Snyder, and Faye A. Harmon. "Microvascular circulation of the descending colon in horses." American Journal of Veterinary Research 53, no. 6 (1992): 1001–6. http://dx.doi.org/10.2460/ajvr.1992.53.06.1001.

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Summary The microvascular circulation of the descending colon was studied in 5 adult horses, using microangiography and light microscopy combined with gross studies and scanning electron microscopy of vascular replicas. After heparinization, horses were euthanatized, and 3 segments of the descending colon and its mesentery containing 1 vascular arcade were removed from each horse. The fecal balls were gently massaged from the lumen, and the blood was flushed free of the circulation with isotonic NaCl. In 5 segments, the vascular system was injected with a modified radiopaque medium and evaluat

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Jin, Yirong. "The Impact of Digital Economy on Circulation Efficiency: Empirical Evidence from China's Postal Industry." Frontiers in Business, Economics and Management 8, no. 3 (2023): 76–79. http://dx.doi.org/10.54097/fbem.v8i3.7726.

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With the rapid development of digital technology, the traditional economic operation mode has been completely changed. Digital economy has become a new driving force for world economic growth. In the context of the new development model, accelerating the development of digital economy, deepening circulation reform and improving circulation efficiency have important theoretical and practical significance for stabilizing the national economic cycle. In order to explore the influence of the development of digital economy on the efficiency of circulation industry, this paper firstly expounds the b

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Yin, Chong, Yingxin Cui, and Yue Liu. "Effect and Mechanism of Economic Circulation in the Middle and Lower Reaches of the Yellow River: Multiregional Input–Output Model and Industrial Complex Network Approaches." Sustainability 14, no. 19 (2022): 12922. http://dx.doi.org/10.3390/su141912922.

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China has implemented the Yellow River strategy, and the middle and lower reaches of the Yellow River (MLYR) play an important role in promoting the sustainable economic growth of China. However, the economic circulation of the MLYR is constricted by the imbalance and heterogeneity in the economy in the regions, and it is necessary to explore how economic circulation and sustainable development in the MLYR can be improved. In this study, based on the multiregional input–output tables for 2012 and 2017, we developed a MLYR multiregional input–output model; applied indicators, such as intraregio

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Shen, Yuan, Linlin Shi, Yueyue Tao, et al. "Sustainability Evaluation and Optimization on the Modern Agro-Pastoral Circular System Integrating Emergy Analysis and Life Cycle Assessment." Sustainability 14, no. 9 (2022): 4890. http://dx.doi.org/10.3390/su14094890.

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Developing modern circular agriculture is one of the important ways to promote agricultural sustainable development, facilitating the achievement of the Sustainable Development Goals adopted by the United Nations. However, when agricultural production operators constructed particular systems, they often lacked accurate data support and parameter matching. Consequently, problems such as unknown input and output, low circulation efficiency, and lack of comprehensive evaluation occurred, increasing challenges for efficient circulation of the systems. Therefore, based on sufficient data collection

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Hsiao, Chen-Jie, and Jin-Li Hu. "Biomass and Circular Economy: Now and the Future." Biomass 4, no. 3 (2024): 720–39. http://dx.doi.org/10.3390/biomass4030040.

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Biomass is inherently organic and renewable, promoting a circular economy ecosystem. As global consumption patterns change, circular economy strategies have turned into sustainable net-zero strategies for developing countries and developed countries, and its value chain is now included in important biomass energy policies. Many countries are actively transforming their economic growth patterns, developing their own circular economy, targeting ecological sustainable development, and adjusting domestic industrial structures. The concept of a circular society, synergistic with the social economy

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Yang, An-long, Lai-bing Jia, and Xie-zhen Yin. "Formation process of the vortex ring generated by an impulsively started circular disc." Journal of Fluid Mechanics 713 (October 29, 2012): 61–85. http://dx.doi.org/10.1017/jfm.2012.436.

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AbstractWe present an experimental study on the axisymmetric vortex ring generated by a thin circular disc. The velocity and vorticity fields are measured by digital particle image velocimetry (DPIV). The finite-time Lyapunov exponent fields and the Lagrangian coherent structures (LCSs) of the vortex flow are computed in order to analyse the transport of the fluid during its formation and identify the boundary of the vortex ring. The volume, circulation and energy of the vortex ring are calculated. It is found that the formation of the vortex ring basically includes three phases: a rapid growt

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Domozhirova, Alena. "LOCOMOTIVE PERFORMANCE AS AN INDICATOR OF THE EFFICIENCY OPERATION CIRCULAR BLOCK TRAIN CIRCULATION SYSTEM." Modern Technologies and Scientific and Technological Progress 2022, no. 1 (2022): 167–68. http://dx.doi.org/10.36629/2686-9896-2022-1-167-168.

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Salinas-Velandia, Diego Alejandro, Felipe Romero-Perdomo, Stephanie Numa-Vergel, Edwin Villagrán, Pilar Donado-Godoy, and Julio Ricardo Galindo-Pacheco. "Insights into Circular Horticulture: Knowledge Diffusion, Resource Circulation, One Health Approach, and Greenhouse Technologies." International Journal of Environmental Research and Public Health 19, no. 19 (2022): 12053. http://dx.doi.org/10.3390/ijerph191912053.

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The integration of the circular economy in agriculture has promoted sustainable innovation in food production systems such as horticulture. The present paper illustrates how horticulture is transitioning to the circular economy. This research field’s performance approaches and trends were assessed through a bibliometric and text-mining analysis of the literature. Our findings revealed that circular horticulture is a recent research field that is constantly growing. Its approach has been neither systemic nor integrative but fragmented. Bioeconomy, urban agriculture, recycled nutrients, biochar,

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Geografi, Nabilla, Wahid Akhsin Budi Nursidiq, Puji Hardati, and Rahma Hayati. "Pengaruh Kondisi Sosial Ekonomi Keluarga Sirkuler Terhadap Tingkat Pendidikan Anak di Desa Turirejo Kecamatan Demak." Edu Geography 10, no. 3 (2023): 57–66. http://dx.doi.org/10.15294/edugeo.v10i3.62512.

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Abstrak Penelitian ini bertujuan untuk memetakan sebaran spasial aliran mobilitas sirkulasi dari Desa Turirejo, mengetahui kondisi sosial ekonomi dan pendidikan keluarga sirkuler, mengidentifikasi faktor-faktor yang mendasari melakukan mobilitas sirkulasi dan rendahnya tingkat pendidikan sebagian keluarga sirkuler, serta menganalisis pengaruh kondisi sosial ekonomi keluarga sirkuler terhadap tingkat pendidikan Anak. Populasi penelitian adalah kepala keluarga di Desa Turirejo yang melakukan mobilitas sirkulasi. Sampel penelitian adalah kepala keluarga sirkuler berstatus aktif maupun tidak

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Bakhrunov, Konstantin. "Analysis of Initial Gas Media and their Influence on the Process of Diffusion Saturation." Key Engineering Materials 712 (September 2016): 256–60. http://dx.doi.org/10.4028/www.scientific.net/kem.712.256.

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The work analyses gas media (activators) and their influence on the process of circular aluminizing of nickel-based heat-proof alloys of grade ZhS. The paper studies the structure and properties of coatings in ZhS alloys after circular aluminizing in initial gas media NiCl2+NH4Cl, AlCl3+NH4Cl, NiCl2 and NH4Cl. The analysis of the formation of gas medium in the muffle of the circulation setup allows excluding unwanted inclusions (nitrogen, aluminum oxide) and their occurrence in coatings, which lead to their embrittlement and early cracking.

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Liu, Jia Lin. "Study on Cycle Economic and Ecological Innovation System under the Perspective of Ecological Capital." Advanced Materials Research 524-527 (May 2012): 3584–88. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.3584.

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The nature of the circular economy is an ecological economy, and its smooth implementation need to have the ecological basis for the ecological capital stock to maintain non-decreasing. This paper first introduces the connotation of the cycle of economic and ecological innovation of the relevance of ecological capital and circulation of economic innovation, in order to determine the value orientation of the circular economy in the ecological capital of eco-innovation as a basis to build a cycle of economic and ecological innovation system.

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Dobson, James Whiteley, Edem Barnor-Ahiaku, Sapna Puppala, and Simon John McPherson. "A Rare Pulmonary Arterio-venous Malformation with Circular Shunting Due to Inferior Phrenic Artery Supply with Pulmonary Venous Drainage: a Case Report." SN Comprehensive Clinical Medicine 3, no. 2 (2021): 688–91. http://dx.doi.org/10.1007/s42399-021-00764-z.

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AbstractA rare case of a pulmonary arterio-venous malformation not requiring treatment is reported. An incidental peripheral right lower lobe intrapulmonary pulmonary arterio-venous malformation was identified on computed tomography. On catheter angiography, no pulmonary artery supply was identified. Systemic artery catheter arteriography identified systemic arterial supply from a conjoined inferior phrenic artery with pulmonary venous drainage to the left atrium. Due to this lung abnormality being a systemic arterial circulation to pulmonary venous circulation (left to left or circular) shunt

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Illés, Sándor, and Éva Gellér-Lukács. "Dual Nature of International Circular Migration." Migration Letters 19, no. 2 (2022): 149–58. http://dx.doi.org/10.33182/ml.v19i2.1554.

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The paper deals with the international circular migration which has globally become a buzzword in scientific, political, and administrative circles since the new century. The article concentrates on an unknown feature of the circular migration, namely its dialectic nature, which encompasses both event and system characteristics. This would be the common root of false ideas surrounding human circulation. The literature echoes wide variety of conceptualisations of international circular migration. However, the investigation and application of double characteristic is absent. On one hand, circula

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Lortz, D. "On Rayleigh’s Stability Criterion for Couette Flow." Zeitschrift für Naturforschung A 48, no. 5-6 (1993): 703–4. http://dx.doi.org/10.1515/zna-1993-5-621.

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Abstract The stability problem of a stationary circular flow of an ideal fluid between two coaxial cylinders is considered. It is shown that Rayleigh's circulation criterion is necessary and sufficient for the total kinetic energy of an axisymmetric disturbance to be bounded in time.

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Samtaney, Ravi, and Norman J. Zabusky. "Circulation deposition on shock-accelerated planar and curved density-stratified interfaces: models and scaling laws." Journal of Fluid Mechanics 269 (June 25, 1994): 45–78. http://dx.doi.org/10.1017/s0022112094001485.

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Vorticity is deposited baroclinically by shock waves on density inhomogeneities. In two dimenslons, the circulation deposited on a planar interface may be derived analytically using shock polar analysis provided the shock refraction is regular. We present analytical expressions for Γ′, the circulation deposited per unit length of the unshocked planar interface, within and beyond the regular refraction regime. To lowest order, Γ′ scales as \[ \Gamma^\prime\propto (1-\eta^{-\frac{1}{2}})(\sin\alpha)(1+M^{-1}+2M^{-2})(M-1)(\gamma^{\frac{1}{2}}/\gamma + 1)\] where M is the Mach number of the incid

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Feng, Bing, Hui Quan, and Zhisheng Wang. "Design and numerical simulation of elliptical claw-type hydrogen circulation pump rotor." Journal of Physics: Conference Series 2707, no. 1 (2024): 012033. http://dx.doi.org/10.1088/1742-6596/2707/1/012033.

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Abstract The claw-type hydrogen circulation pump has the advantages of smooth gas delivery, wide range of adapted working conditions, high efficiency, etc., which is the key equipment of the fuel cell system. In this paper, a new type of elliptical claw rotor is proposed by the combination of elliptical line, circular arc and pendulum line, and the equation of the line is calculated and deduced, and the distribution law of the flow field in the working chamber is obtained based on numerical simulation, and the internal flow characteristics, the working process, the change rule of the pressure,

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Chaplin, John R. "Orbital flow around a circular cylinder. Part 1. Steady streaming in non-uniform conditions." Journal of Fluid Mechanics 237 (April 1992): 395–411. http://dx.doi.org/10.1017/s002211209200346x.

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This work is concerned with the source of an important component of nonlinear loading on a horizontal cylinder beneath waves that is not present in conventional diffraction calculations. Earlier measurements (Chaplin 1984b) have suggested that circulation induced by steady streaming around the cylinder may be responsible for loading which in some cases reduces the perceived inertia force by 50%. The present work is aimed at studying the steady streaming around a cylinder in general non-uniform orbital flow, and determining whether in the particular case of wave-induced flow it could be related

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Lin, Ming-Chung, and Sheng-Yeh Hwang. "NEARSHORE CIRCULATIONS ON A WAVY COAST." Coastal Engineering Proceedings 1, no. 21 (1988): 193. http://dx.doi.org/10.9753/icce.v21.193.

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Nearshore circulations, produced by wave-induced radiation stress gradients, form different circulation patterns under different wave characteristics and topographical conditions. Although numerous studies of nearshore circulations, such as Bowen (1969), Miller and Barcilon (1978), Dalrymple & Lozano (1978) and so on, have been appeared in the literature, it seems that little attention is paid on the case of a non-straight shoreline. O'Rorske & Leblond (1972) have investigated the wave-induced longshore currents in a semicircular bay, while Oda (1982) has used the coordinate transforma

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Ghee, Terence A., and J. Gordon Leishman. "Unsteady circulation control aerodynamics of a circular cylinder with periodic jet blowing." AIAA Journal 30, no. 2 (1992): 289–99. http://dx.doi.org/10.2514/3.10916.

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