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36 articles for “Blood Flow”

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Research ArticleOpen accessPhrase in the titleImproving Medical Imaging and Blood Flow Measurement by using a New Doppler Effect RelationshipFlorian Ion T. PetrescuThe Doppler Effect represents the frequency variation of the waves, received by an observer which is drawing (coming), respectively it’s removing (going), from a wave spring (source). One proposes to study the Doppler Effect for the light waves, generally for the electromagnetic waves. Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842 in … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 4 · 14 Oct 2015 · 12,852 accessesView PDFCite
Research ArticleOpen accessPhrase in the titleNumerical Analysis of Pulsatile Blood Flow in a Stented Human Coronary Artery with a Flow DividerVahab Dehlaghi, Mohammad Tafazoli Shadpoor, Siamak NajarianShear stress is known to play a central role in restenosis formation and is sensitive to stent geometry. Local flow alterations created by a different stents without and with flow divider were studied to compare the hemodynamic effects of Stent design properties on restenosis in stented human coronary artery. Blood pressure and shear stress values were computed in three different … …American Journal of Applied Sciences, Vol. 4, Issue 6 · 30 Jun 2007 · 6,521 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAnalysis of Blood Turbulent Flow in Carotid Artery Including the Effects of Mural Thrombosis Using Finite Element ModelingM. Arab-Ghanbari, M. M. Khani, A. Arefmanesh, F. Tabatabai-GhomsheArterial thrombosis is an extremely significant health problem. As a result of numerous factors involved in such problem, describing the role of hemodynamics in thrombogenesis has been asserted to be one of the most demanding and complicated challenges in biomechanics. An axisymmetric model considering fluid-structure interactions (FSI) was introduced and numerically solved for an artery with a thrombosis to perform … …American Journal of Applied Sciences, Vol. 6, Issue 2 · 28 Feb 2009 · 7,408 accessesView PDFCite
Research ArticleOpen accessIn the keywordsMorphological Changes in Brain Tissue During Experimental HypoxiaAizhan Mussayeva, Ulbossin Kozhaniyazova, Laura Koibasova et al.The extensive application of hypoxic training to enhance cerebral circulation highlights its significant role in effectively realizing the therapeutic and health-promoting benefits of this method. The discrepancy between the data on the features of cerebral circulation and cellular metabolism in brain tissues during circulatory hypoxia and significant interest in the physiological patterns of the integrative response of the body determined … …OnLine Journal of Biological Sciences, Vol. 25, Issue 4 · 20 Feb 2026 · 1,552 accessesView PDFCite
Research ArticleOpen accessIn the keywordsBlood-Circulating Type 2 Follicular Helper T Cells in Pediatric Allergy PatientsMasaaki Hamada, Yoshihiko Sakurai, Tomohiro TakedaPediatric allergic diseases are primarily caused by an IgE-dependent immunological reaction. Despite studies reporting the involvement of T follicular Helper (TfH) cells, especially type 2 TfH cells, in class-switching to IgE production in B cells, TfH subset skewing in peripheral blood in pediatric allergy patients remains to be elucidated. This study aimed to investigate the possible involvement of type 2 … …American Journal of Immunology, Vol. 16, Issue 1 · 18 Jun 2020 · 7,505 accessesView PDFCite
Research ArticleOpen accessIn the keywordsNUTRITIONAL CHARACTERISTICS OF THE DAIRY COW DURING EARLY GESTATION AND SUBSEQUENT GROWTH AND CARDIAC MEASUREMENTS OF HER OFFSPRINGJ. E. Larson, B. E. Voelz, D. K. Hardin, C. O. LemleyThe objective was to determine whether maternal nutritional status and milk production during early gestation influenced or were correlated with parameters of the calf at birth and at 1 month of age. From parturition until 90 days pregnant, blood samples were collected every 14 days in dairy cows and plasma was assayed for concentrations of glucose and β-Hydroxybutyrate (BHBA). Calves … …American Journal of Animal and Veterinary Sciences, Vol. 9, Issue 3 · 15 Sep 2014 · 7,625 accessesView PDFCite
Research ArticleOpen accessIn the keywordsFlow Characteristics in Elastic Arteries Using a Fluid-Structure Interaction ModelH. Niroomand Oscuii, M. Tafazzoli Shadpour, Farzan GhalichiIn this study the interaction of blood flow with arterial wall has been investigated using FSI (Fluid-Structure Interaction) modeling. Computer simulation of pulsatile blood flow was carried out on the basis of the time dependent axisymmetric Navier-Stokes equations for an incompressible Newtonian fluid flow. An elastic incompressible material with large deformation was considered for the arterial wall and momentum and … …American Journal of Applied Sciences, Vol. 4, Issue 8 · 31 Aug 2007 · 7,429 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Two Dimensional Infinite Element Model to Study Temperature Distribution in Human Dermal Regions due to TumorsK. R. pardasani, Madhvi shakyaIn this study, a two dimensional infinite element model has been developed to study thermal effect in human dermal regions due to tumors. This model incorporates the effect of blood mass flow rate, metabolic heat generation and thermal conductivity of the tissues.The dermal region is divided into three natural layers, namely, epidermis, dermis and subdermal tissues. A uniformly perfused tumor … …Journal of Mathematics and Statistics, Vol. 1, Issue 3 · 30 Sep 2005 · 6,372 accessesView PDFCite
Research ArticleOpen accessIn the keywordsFlow Cytometry Baseline on Peripheral Leukocyte Cell Profiles for Dairy Goat KidsDarcy M. Fletcher, Megan B. Vogt, Hannah E. Pirner et al.Small ruminants, like goats, would make excellent animal models for not only infectious diseases in large ruminants but also analogous diseases in humans, such as human tuberculosis, Crohn’s disease, melioidosis and brucellosis. The main disadvantage for the small ruminant model is the lack of sufficient baseline data on normal, healthy goat kids. Furthermore, most reagents (antibodies and the like) were … …American Journal of Animal and Veterinary Sciences, Vol. 8, Issue 4 · 26 Sep 2013 · 7,572 accessesView PDFCite
Research ArticleOpen accessIn the abstractNerve Growth Factor (NGF) Gene Analysis in Menstrual Blood of Endometriosis: DNA Methylation and mRNA Expression LevelsOcktariyana, Nurul Hikmawati et al.Menstrual blood flow is reversed through the fallopian tubes during the menstrual process and implants outside the uterus, which is the theory of pathogenesis in endometriosis sufferers. This study aims to analyze the level of DNA methylation and mRNA expression of the Nerve Growth Factor (NGF) gene in menstrual blood in endometriosis patients and analyze the correlation. The study was … …OnLine Journal of Biological Sciences, Vol. 25, Issue 2 · 7 Aug 2025 · 4,684 accessesView PDFCite