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pro vyhledávání: '"A. I. Petrov"'
Autor:
A. I. Petrov
Publikováno v:
Интеллект. Инновации. Инвестиции, Vol 4, Pp 72-82 (2023)
The safety issues of road transport operation have been relevant for more than 125 years. During this time, the vision of the essence and ideas about the principles and methods of ensuring road safety (traffic safety paradigms) have changed several t
Externí odkaz:
https://doaj.org/article/b44a1bc6afe2421b8cb8092e1b18a1bd
Publikováno v:
Сибирский лесной журнал, Vol 10, Iss 3, Pp 15-20 (2023)
Significant areas of land has been withdrawn from the forest fund for the extraction of precious metals in the Urals. After the completion of the development of alluvial deposits, these lands require reclamation work. Low content in soils formed duri
Externí odkaz:
https://doaj.org/article/1774e3b8967e41dfb5cbca37d6d37b4c
Publikováno v:
Mašiny i Ustanovki: Proektirovanie, Razrabotka i Èkspluataciâ, Vol 0, Iss 2, Pp 1-12 (2017)
Centrifugal pumps are the most extensive class of dynamic hydraulic machines, which are commonly used. So-called hermetic pumps, which possess a number of calculation and design features, stand apart among these machines. Rather complicated task is t
Externí odkaz:
https://doaj.org/article/e44ac8ef4b2f42e6bc419574737bfabf
Autor:
A. I. Petrov
Publikováno v:
Mašiny i Ustanovki: Proektirovanie, Razrabotka i Èkspluataciâ, Vol 0, Iss 4, Pp 1-12 (2016)
The article "Scale effect features during simulation tests of 3D printer-made vane pump models" discusses the influence of scale effect on translation of pump parameters from models, made with 3D-prototyping methods, to full-scale pumps. Widely sprea
Externí odkaz:
https://doaj.org/article/83f827462a4649ccb924f10d32086c5d
Autor:
A. I. Petrov
Publikováno v:
Mašiny i Ustanovki: Proektirovanie, Razrabotka i Èkspluataciâ, Vol 0, Iss 5, Pp 33-44 (2016)
The article “Systems of the heat balance maintenance in modern test benches for centrifugal pumps” makes the case to include cooling systems of a working fluid (heat setting) in test bench for impeller pumps. It briefly summarizes an experience o
Externí odkaz:
https://doaj.org/article/d709834bd6a64023af130296d531d1b5
Autor:
A. I. Petrov
Publikováno v:
Vestnik Permskogo Universiteta: Seriâ Geologiâ, Vol 2, Iss 23, Pp 95-99 (2014)
Представлены результаты исследования экономичного функционирования системы вентиляции подземного горного предприятия. Его целью яви
Externí odkaz:
https://doaj.org/article/3d6b095ab6a24f28a9be1b0efe75c3ef
Publikováno v:
Nauka i Obrazovanie, Vol 0, Iss 9, Pp 45-64 (2014)
The article provides a methodology to study the flow in the wet part of the pump with fundamentally new axial-centrifugal impeller by methods of hydrodynamic modeling in the software package STAR CCM +. The objective of the study was to determine the
Externí odkaz:
https://doaj.org/article/23dc14b9dc6a4e7f894b031f3bc173a7
Publikováno v:
Българска кардиология, Vol 28, Iss 3, Pp 24-29 (2022)
Acute pulmonary embolism is the third most common cause of cardiovascular mortality in the world. The sudden pressure overload of the right ventricle, caused by the thrombotic masses in the pulmonary artery, may quickly progress to profound cardiogen
Externí odkaz:
https://doaj.org/article/dd09b36505884292977840b888c7caa2
Publikováno v:
Българска кардиология, Vol 28, Iss 3, Pp 7-23 (2022)
The cardiogenic shock is a state of low cardiac output, primarily due to cardiac dysfunction, which leads to severe organ hypoperfusion with tissue hypoxia and increased lactate levels. It presents a severe complication with a prevalence of around 15
Externí odkaz:
https://doaj.org/article/d212356a66854de09e517cd20db60266
Publikováno v:
Българска кардиология, Vol 28, Iss 3, Pp 81-87 (2022)
Introduction: Arterial hypertension is the most common correctable risk factor for death worldwide. Achievement of therapeutic goal is hampered by multiple factors including non-adherence to drug therapy and individual physiological resistance. Objec
Externí odkaz:
https://doaj.org/article/f4cb7d75a9ef491891520e693cca5f8a