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Journal articles on the topic 'Coefficient Difference (CD)'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Xu, Junli, Kai Ma, Yuling Nie, et al. "Numerical Study on Storm Surge Level Including Astronomical Tide Effect Using Data Assimilation Method." Atmosphere 14, no. 1 (2022): 38. http://dx.doi.org/10.3390/atmos14010038.

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In the storm surge model, the wind drag coefficient Cd is a critical parameter that has a great influence on the forecast of the storm surge level. In the present study, the effect of various wind drag coefficient parameterizations on the storm surge level is investigated in the Bohai Sea, Yellow Sea and East China Sea for Typhoons 7203 and 7303. Firstly, the impacts of initial values of a and b in the linear expression Cd = (a + b × U10) × 10−3 on the pure storm surge model are evaluated based on the data assimilation method. Results indicate that when a and b (i.e., the wind drag coefficient

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Manoj, Modi, D. Chougaonkar Swati, Patil V., et al. "Impact of Viscosity Variation, and Flow Rate on Coefficient of Discharge in Venturimeter Utilizing Taguchi Methodology." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 4 (2020): 1838–40. https://doi.org/10.35940/ijeat.D8364.049420.

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Most of the industries are concerned with flow measurement and accurate measurement of fluid is important to obtain specific proportion as per process requirement. Generally Venturimeter (VM) is utilized in enterprises due to notable highlights offered by it. VM works on the principle of pressure difference i.e. Bernoulli’s principle. By varying cross sectional area of flow, it creates pressure difference along its length which is used to calculate theoretical discharge. Head loss in VM is less as compared to other flow measuring apparatus. Because of its specific geometry eddies formati

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Arkhipov, V. A., S. A. Basalaev, K. G. Perfilieva, and A. S. Usanina. "DRAG COEFFICIENT OF A SOLID SPHERE UNDER NON-ISOTHERMAL CONDITIONS." Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, no. 71 (2021): 13–24. http://dx.doi.org/10.17223/19988621/71/2.

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The results of an experimental study of gravitational settling of a cooled (T = 82 K, 250 K) and a heated (T = 373 K, 473 K, 573 K) steel ball in glycerin and polymethylsiloxane liquids (PDMS-10000, PDMS-30000) in the range of the Reynolds numbers Re = 10−3–1 are presented. It is shown that the stationary velocity of gravitational settling of a particle decreases with its cooling and, conversely, it increases with heating of the particle. A time dependence of the distance traveled by the particle is found to be linear for both heated, cooled, and etalon (T = Tl) solid spheres. The effect of th

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Suk, S. А., and O. A. Venediktova. "PREDICTION OF VISUAL FUNCTION IN PATIENTS WITH DIABETIC MACULAR EDEMA IN TYPE 2 DIABETES." Medical Science of Ukraine (MSU) 21, no. 1 (2025): 27–36. https://doi.org/10.32345/2664-4738.1.2025.04.

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Background. Diabetic macular ischemia (DMI) and foveal avascular zone (FAZ) enlargement are two important clinical findings and biomarkers of poor visual function in patients with diabetic retinopathy (DR). OCT angiography (OCTA) is a noninvasive technique that allows to visualize the retinal plexuses layer by layer, to quantify microvascular parameters, and to correlate them with functional and morphological data. Research is oriented towards identifying earlier preclinical biomarkers of microvascular abnormality in diabetic retina and diabetic macular edema (DME), which is very important con

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Hill, Kevin A., and Gary M. Lackmann. "Analysis of Idealized Tropical Cyclone Simulations Using the Weather Research and Forecasting Model: Sensitivity to Turbulence Parameterization and Grid Spacing." Monthly Weather Review 137, no. 2 (2009): 745–65. http://dx.doi.org/10.1175/2008mwr2220.1.

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Abstract The Weather Research and Forecasting Advanced Research Model (WRF-ARW) was used to perform idealized tropical cyclone (TC) simulations, with domains of 36-, 12-, and 4-km horizontal grid spacing. Tests were conducted to determine the sensitivity of TC intensity to the available surface layer (SL) and planetary boundary layer (PBL) parameterizations, including the Yonsei University (YSU) and Mellor–Yamada–Janjic (MYJ) schemes, and to horizontal grid spacing. Simulations were run until a quasi-steady TC intensity was attained. Differences in minimum central pressure (Pmin) of up to 35 h

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Haposan Misaelman Sinaga and Wawan Aries Widodo. "Studi Pemodelan Numerik Penempatan Shark Fin Vortex Generator dengan Susunan Sebaris Pada Dindong Kiri dan Kanan Bus Penumpang." EduInovasi: Journal of Basic Educational Studies 4, no. 2 (2024): 1383–410. http://dx.doi.org/10.47467/edu.v4i2.4321.

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This study analyzes the impact of installing Shark Fin Vortex Generators (SFVG) in a row arrangement on the left and right sides of a passenger bus on the vehicle’s aerodynamic performance. A numerical modeling approach was used to visualize the airflow around the bus and measure key parameters such as drag coefficient (CD), lift coefficient (CL), and pressure coefficient (CP) distribution. Air velocity contour analysis shows that SFVG significantly optimizes airflow around the bus. The bus with SFVG achieved a higher airspeed of 50.23 km/h, while the bus without SFVG only reached 49.83 km/h,

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Donovan, Deborah A., Brian L. Bingham, Milton From, Abby F. Fleisch, and Eli S. Loomis. "Effects of barnacle encrustation on the swimming behaviour, energetics, morphometry, and drag coefficient of the scallop Chlamys hastata." Journal of the Marine Biological Association of the United Kingdom 83, no. 4 (2003): 813–19. http://dx.doi.org/10.1017/s0025315403007847h.

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Barnacle encrustation negatively influenced every aspect of swimming in the scallop Chlamys hastata measured in this study. Scallops swam significantly longer, travelled further and attained greater elevation once epibiotic barnacles had been removed. Shell morphometry of barnacle-encrusted scallops was similar to shells of unencrusted scallops. Specifically, shell length was positively allometric with shell height and shell mass was negatively allometric. However, adductor muscle mass scaled isometrically to shell height, in contrast to unencrusted scallops. In the laboratory, the drag coeffi

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Permatasari, Rosyida, and Gusty Widyawati. "Effect of Vortex Generators on Airfoil NACA 632-415 to Aerodynamic Characteristics Using CFD." International Journal of Electrical, Energy and Power System Engineering 6, no. 1 (2023): 133–37. http://dx.doi.org/10.31258/ijeepse.6.1.133-137.

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To determine the aircraft’s flight performance, the airfoil type must be considered when designing the wing. A vortex can form when the airfoil travels through a fluid stream with a difference in velocity and pressure around it. Airfoil modification is carried out to delay the occurrence of flow separation by adding a vortex generator. This paper discusses how adding the vortex generator helps slow the stall’s onset and how the vortex generator affects the fluid flow and aerodynamic forces acting on the NACA 632-415. The vortex generator profile is positioned at an x/c = 20% of the chord line’

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Lopes, Tiago J., Tatiana Sampaio, Mafalda P. Pinto, João P. Oliveira, Daniel A. Marinho, and Jorge E. Morais. "Comparison of the Active Drag and Passive Drag Coefficients at the same Swimming Speed Through Experimental Methods." Montenegrin Journal of Sports Science and Medicine 14, no. 1 (2025): 1–8. https://doi.org/10.26773/mjssm.250309.

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Studies about drag in swimming usually report or put the focus on its absolute value. However, it is being claimed that the drag coefficient better represents the hydrodynamic profile of a swimmer. Drag is strongly dependent on speed. Thus, increases in speed will lead to increases in drag. This could lead to misleading interpretations since drag is the water resistance that makes the swimmers’ displacement difficult. Conversely, the drag coefficient is less dependent on speed, which can be seen as a more appropriate measure of the swimmers’ hydrodynamic profile. This study used a complete exp

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Frihdianto, Fajar, Nyeyep Sri Wardani, and Indah Widiastuti. "ANALYSIS OF THE USE OF SPOILER ONE LEVEL AND TWO LEVELS IN CONDITIONS OF STEADY AGAINST THE DRAG AND LIFT COEFFICIENTS ON A SEDAN TYPE CAR BY USING CFD (COMPUTATIONAL FLUID DYNAMIC)." Journal of Mechanical Engineering and Vocational Education (JoMEVE) 1, no. 2 (2019): 58. http://dx.doi.org/10.20961/jomeve.v1i2.25066.

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<p><em>This research was simulation analyzing the condition of steady flow in around of body car made and analized computly using CFD program (Computational Fluid Dynamic). The model used was Sedan car designed with different rear end body by adding spoiler. Analyzing in this research was done by using Software 18.2–CFD Student Version. Design of the three models were compared to find out the difference in magnitude of Coefficient of Drag, Coefficient of Lift, pressure distribution, velocity distribution, and behavioral character of flow around the rear end of car in the condition

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Li, Jiachun, Xu Yang, Yuze Zheng, et al. "The Accumulation Characteristics of Different Heavy Metals in Sea Rice." Applied Sciences 12, no. 19 (2022): 9718. http://dx.doi.org/10.3390/app12199718.

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Here heavy metal (Cd, Zn, and Cu) accumulation features of sea rice (a salt-tolerant rice cultivar) were explored to provide a reference for preventing and controlling of heavy metals, screen new plant remediation resources, and offer the basis for safe sea rice production. The sea rice variety Hai Hong 12 (HH12) was used as the research object in the soil culture experiments conducted to investigate the effects of the addition of Cd (0, 1, 2, 4, 8 mg/kg), Zn (0, 100, 200, 300, 400 mg/kg), and Cu (0, 100, 200, 300, 400 mg/kg) on the growth and accumulation of heavy metals in different HH12 par

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Poole, Chad A., R. Wayne Skaggs, Mohamed A. Youssef, George M. Chescheir, and Carl R. Crozier. "Effect of Drainage Water Management on Nitrate Nitrogen Loss to Tile Drains in North Carolina." Transactions of the ASABE 61, no. 1 (2018): 233–44. http://dx.doi.org/10.13031/trans.12296.

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Abstract. Short-term studies have demonstrated that drainage water management (DWM), or controlled drainage (CD), can be used to substantially reduce the loss of nitrogen (N) from drained lands for a wide range of soils, crops, locations, and climates. Long-term studies on the effects of the practice are limited. This article presents results on the effects of CD on nitrate-N (NO3-N) losses for three crops, corn ( L.), wheat ( L.), and soybean ( [L.] Merr.), in a two-year rotation in North Carolina. Nitrate losses were measured on replicated plots under CD and conventional, or free drainage (F

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Xiao, Kuowei, Yuli Sun, and Lin Lei. "Change Alignment-Based Image Transformation for Unsupervised Heterogeneous Change Detection." Remote Sensing 14, no. 21 (2022): 5622. http://dx.doi.org/10.3390/rs14215622.

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Change detection (CD) with heterogeneous images is currently attracting extensive attention in remote sensing. In order to make heterogeneous images comparable, the image transformation methods transform one image into the domain of another image, which can simultaneously obtain a forward difference map (FDM) and backward difference map (BDM). However, previous methods only fuse the FDM and BDM in the post-processing stage, which cannot fundamentally improve the performance of CD. In this paper, a change alignment-based change detection (CACD) framework for unsupervised heterogeneous CD is pro

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Fu, Weiqi, Pan Shao, Ting Dong, and Zhewei Liu. "Novel Higher-Order Clique Conditional Random Field to Unsupervised Change Detection for Remote Sensing Images." Remote Sensing 14, no. 15 (2022): 3651. http://dx.doi.org/10.3390/rs14153651.

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Change detection (CD) is one of the most important topics in remote sensing. In this paper, we propose a novel higher-order clique conditional random field model to unsupervised CD for remote sensing images (termed HOC2RF), by defining a higher-order clique potential. The clique potential, constructed based on a well-designed higher-order clique of image objects, takes the interaction between the neighboring objects in both feature and location spaces into account. HOC2RF consists of five principle steps: (1) Two difference images with complementary change information are produced by change ve

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Komnos, Dimitrios, Stijn Broekaert, Theodoros Grigoratos, Leonidas Ntziachristos, and Georgios Fontaras. "In Use Determination of Aerodynamic and Rolling Resistances of Heavy-Duty Vehicles." Sustainability 13, no. 2 (2021): 974. http://dx.doi.org/10.3390/su13020974.

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A vehicle’s air drag coefficient (Cd) and rolling resistance coefficient (RRC) have a significant impact on its fuel consumption. Consequently, these properties are required as input for the certification of the vehicle’s fuel consumption and Carbon Dioxide emissions, regardless of whether the certification is done via simulation or chassis dyno testing. They can be determined through dedicated measurements, such as a drum test for the tire’s rolling resistance coefficient and constant speed test (EU) or coast down test (US) for the body’s air Cd. In this paper, a methodology that allows deter

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Zhang, Yingfan, Tingting Fu, Xueyao Chen, Hancheng Guo, Hongyi Li, and Bifeng Hu. "Modeling Cadmium Contents in a Soil–Rice System and Identifying Potential Controls." Land 11, no. 5 (2022): 617. http://dx.doi.org/10.3390/land11050617.

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Cadmium (Cd) pollution in a soil–rice system is closely related to widely concerning issues, such as food security and health risk due to exposure to heavy metals. Therefore, modeling the Cd content in a soil–rice system and identifying related controls could provide critical information for ensuring food security and reducing related health risks. To archive this goal, in this study, we collected 217 pairs of soil–rice samples from three subareas in Zhejiang Province in the Yangtze River Delta of China. All soil–rice samples were air-dried and conducted for chemical analysis. The Pearson’s co

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Hu, Xing Jun, and Jing Chang. "Influence of Engine Cabin Simplification on Aerodynamic Characteristics of Car." Advanced Materials Research 1042 (October 2014): 188–93. http://dx.doi.org/10.4028/www.scientific.net/amr.1042.188.

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In order to analyze the impact of engine cabin parts on aerodynamic characteristics, the related parts are divided into three categories except the engine cooling components: front thin plates (average thickness of 2mm), bottom-suspension and interior panels. The aerodynamic drag coefficient (Cd) were obtained upon the combination schemes consisting of the three types of parts by numerical simulation. Results show that Cd by simulation is closer to the test value gained by the wind tunnel experiment when front thin plates were simplified to the two-dimensional interface with zero thickness. Th

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Jayasundara, Sajith, Malik Goonewardene, and Lanka Dassanayake. "The association between maternal intra-abdominal pressure and hypertension in pregnancy." PLOS ONE 18, no. 10 (2023): e0284230. http://dx.doi.org/10.1371/journal.pone.0284230.

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Introduction Pregnancy leads to a state of chronically increased intra‐abdominal pressure (IAP) caused by a growing fetus, fluid, and tissue. Increased intra-abdominal pressure is leading to state of Intra-Abdominal Hypertension (IAH) and Abdominal Compartment Syndrome. Clinical features and risk factors of preeclampsia is comparable to abdominal compartment syndrome. IAP may be associated with the hypertension in pregnancy (HIP). Objectives The study aimed to determine the antepartum and postpartum IAP levels in women undergoing caesarean delivery (CD) and association between hypertension in

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Aldiabat, Mohammad, Yassine Kilani, Yazan Aljabiri, and Abdel-qader Al-bashabsheh. "SEPSIS IN THE SETTINGS OF INFLAMMATORY BOWEL DISEASE: STUDYING THE OUTCOMES OF OVER EIGHT-MILLION PATIENTS." Inflammatory Bowel Diseases 29, Supplement_1 (2023): S30—S31. http://dx.doi.org/10.1093/ibd/izac247.056.

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Abstract BACKGROUND Inflammatory bowel disease (IBD) is associated with increased risk of infections, attributed to the nature of the disease itself, and the use of immunosuppressive agents in these patients as well. However, the impact of IBD on patients with sepsis is poorly studied. In this analysis, authors aim to investigate the outcomes of sepsis in patients with IBD. METHODS This is an analysis of the National Inpatient Sample Database of the years 2016 to 2019. Using ICD-10 codes, authors identified patients who were admitted with a principal diagnosis of sepsis and those with history

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Garcia, Danielle, Ivo Vieira de Sousa Neto, Yuri de Souza Monteiro, et al. "Reliability and Validity of a Portable Traction Dynamometer in Knee-Strength Extension Tests: An Isometric Strength Assessment in Recreationally Active Men." Healthcare 11, no. 10 (2023): 1466. http://dx.doi.org/10.3390/healthcare11101466.

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Background: the study determined the validity and reliability of measurements obtained using the portable traction dynamometer (PTD) (E-Lastic, E-Sports Solutions, Brazil) and the reproducibility between evaluators (precision) in the evaluation of the isometric muscle strength of the knee extensors of healthy male adults, compared to measurements obtained with the “gold standard” computerized dynamometer (CD) (Biodex System 3, Nova York, NY, USA). Methods: we evaluated sixteen recreationally active men (29.50 ± 7.26 years). The test–retest reliability of both equipment to determine quadriceps

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Tucker, VANCE A. "BODY DRAG, FEATHER DRAG AND INTERFERENCE DRAG OF THE MOUNTING STRUT IN A PEREGRINE FALCON,FALCO PEREGRINUS." Journal of Experimental Biology 149, no. 1 (1990): 449–68. http://dx.doi.org/10.1242/jeb.149.1.449.

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1. The mean, minimum drag coefficients (CD,B) of a frozen, wingless peregrine falcon body and a smooth-surfaced model of the body were 0.24 and 0.14, respectively, at air speeds between 10.0 and 14.5 ms−1. These values were measured with a drag balance in a wind tunnel, and use the maximum crosssectional area of the body as a reference area. The difference between the values indicates the effect of the feathers on body drag. Both values for CD,B a r e lower than those predicted from most other studies of avian body drag, which yield estimates of CD,B up to 0.41. 2. Several factors must be cont

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Zhang, Jingzhou, Shengtang Zhang, Guibao Li, Ming Liu, and Si Chen. "Effects of vegetation lodging on overland runoff flow regime and resistance." Water Supply 20, no. 4 (2020): 1463–73. http://dx.doi.org/10.2166/ws.2020.059.

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Abstract Vegetation is a vital part of the natural environment. Variations in vegetation morphology produce changes in the mechanical and fluid characteristics of overland flow. Determining the effects of vegetation lodging on the overland runoff flow regime and resistance is a prerequisite for accurately simulating overland runoff and convergence, revealing the mechanism of overland flow propagation, and the design and management of vegetation protection, soil consolidation, and ecological slope engineering. To systematically study the effects of vegetation lodging on overland runoff, four pl

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Akhyan, Amnur, and Fadhli Fadhli. "Pengaruh Variasi Tebal Orifice dan Bilangan Reynolds (Re) terhadap Penurunan Tekanan (Pressure Drop) pada Entrance Region." Quantum Teknika : Jurnal Teknik Mesin Terapan 4, no. 2 (2023): 75–82. http://dx.doi.org/10.18196/jqt.v4i2.16154.

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Orifice is a device that is placed in a pipe flow to inhibit the flow of fluid and cause a pressure drop. The measurement of the flow rate (flow rate) is obtained from the difference in pressure due to the pressure drop. In this study, it analyzed the influence of differences in plate orifice thickness variations used ranging from 2 mm to 4 mm thick with variations in increments every 0.5 mm with an orifice center hole diameter of 1.5 cm. Orifice placement is placed in an area whose speed profile is still changing or called the entrance region with a pipe diameter used 2.54 cm (1 Inch) diamete

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Kooshartoyo, Meddy, Eflita Yohana, Muchammad Muchammad, and Ivranza Zuhdi Pane. "Analisis Visualisasi Aliran Pengujian Model Airfoil Menggunakan Fluida Vape dengan Geometri Smoke Line yang berbeda." ROTASI 26, no. 2 (2024): 73–78. https://doi.org/10.14710/rotasi.26.2.73-78.

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This research aims to analyze the flow visualization of the design of 2 types of smoke rake with vape fluid. The test model used was a three-dimensional NACA 4412 airfoil profile made from 10 mm thick flexyglass structural material, skin wrapped in epoxy resin with dimensions with chord length (C) = 151.52 mm, span width (S) = 300 mm, maximum thickness (t) = 19.18 mm made on a laboratory scale for wind tunnel testing purposes. Aerodynamic flow research was carried out at angles of attack (α) 5o, 100, 150 and 200 at wind speeds of 5 m/s, 10 m/s, and 15 m/s and 20 m/s. Several important paramete

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Smith, Kenneth J., David J. Emerson, and Michael A. Schuldt. "A demographic and psychometric assessment of the Connor-Davidson resilience scale 10 (CD-RISC 10) with a US public accounting sample." Journal of Accounting & Organizational Change 14, no. 4 (2018): 513–34. http://dx.doi.org/10.1108/jaoc-12-2016-0085.

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Purpose This paper aims to evaluate the efficacy of the Connor–Davidson Resilience Scale 10 (CD-RISC 10) (Campbell-Sills and Stein, 2007) for use in public accounting settings. Design/methodology/approach The analyses include an examination of possible demographic differences in overall score, the scale’s factor structure, the invariance of its factor structure across gender and age groups, the scale’s reliability and its convergent and divergent validity. Findings There are significant gender and age group difference in scores, but a common univariate factor structure for the scale. The autho

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Zhang, Rui, Xian Xiang Luo, and Jian Qiang Yang. "Pollution and Evaluation of Heavy Metals in the Wetland Soil of Shuangtaizi Estuary." Advanced Materials Research 573-574 (October 2012): 348–52. http://dx.doi.org/10.4028/www.scientific.net/amr.573-574.348.

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Contents of five kinds of heavy metals (Cu, Pb, Zn, Cd, As) were determined from the surface and section of Shuangtaizi estuarine wetland, China, in October of 2008.The results indicated that, the average concentrations of Cu, Pb, Zn, Cd and As in surface soil were higher than background value, but the content of Cd exceeded the first environmental quality standard for soils, and became the main pollutant factor. The contents of Cu, Pb and As in the coastal marsh solonchak were relatively higher; while the content of Zn in the salt meadow soil was higher and Cd in the tidal shallow solonchak w

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Diyana Nasri Huang, Farah, Wirachman Wisnoe, Rizal Effendy Mohd. Nasir, and Ehan Sabah Shukri Askari. "Effect of Wing Locations to the Aerodynamic of UiTMâ€™s Blended Wing Body-Unmanned Aerial Vehicle (BWB-UAV) Prototype." International Journal of Engineering & Technology 7, no. 4.25 (2018): 119–25. http://dx.doi.org/10.14419/ijet.v7i4.25.22410.

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This paper focuses on the effect of wing placement on UiTMâ€™s BWB Prototype to the aerodynamic performance of the aircraft. Lift coefficient (CL), drag coefficient (CD) and pitching moment coefficient (CM) are analyzed at 20 m/s air velocity, using NUMECA Computational Fluid Dynamics (CFD) software. Three wing locations are selected, i.e.: initial location (in reference to the BWB Prototype), front location (30% from leading edge), and middle location (in between of the first two cases). The canard and wing tips from the BWB Prototype are removed for this study. Grid independence study is com

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Parzentny, Henryk R. "Spatial Macroscale Variability of the Role of Mineral Matter in Concentrating Some Trace Elements in Bituminous Coal in a Coal Basin—A Case Study from the Upper Silesian Coal Basin in Poland." Minerals 10, no. 5 (2020): 422. http://dx.doi.org/10.3390/min10050422.

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As there are numerous claims that the mode of occurrence of trace elements in coal influences the quality of the substrates as well as the course and results of the coal preparation processes, it is necessary to analyse the differences in the mode of occurrence of the elements in coal within a coal basin or a coal deposit. With the use of concentration distribution functions and the Pearson correlation coefficient, it was concluded that (1) mineral matter plays a significant and nearly constant or constant role in concentrating V, Cr, Co, As, Rb, Sr, Ba, and Pb in coal; (2) organic matter play

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Culik, B., R. Wilson, and R. Bannasch. "UNDERWATER SWIMMING AT LOW ENERGETIC COST BY PYGOSCELID PENGUINS." Journal of Experimental Biology 197, no. 1 (1994): 65–78. http://dx.doi.org/10.1242/jeb.197.1.65.

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Energetic requirements of under-water swimming in pygoscelid penguins were studied in Antarctica, using respirometry together with a 21 m long swim canal and externally attached devices recording the swimming speed and dive duration of unrestrained animals. Field measurements were compared with measurements of the hydrodynamic properties of an Adelie penguin model in a circulating water tank. Minimium transport costs during underwater swimming in Adelie (Pygoscelis adeliae), chinstrap (P. antarctica) and gentoo (P. papua) penguins averaged 4.9, 3.7 and 7.6 J kg-1 m-1, respectively, at their pr

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Ibrahim, Mohamed Mohamed-Aly, Omar Hassan Salama, Mahmoud Sofy, Sanaa Ahmed Mohamed, and Ahmed Gomaa Elmahdy. "Hydro-implantation versus Visco-implantation of Intraocular Lenses and Fluid Load Effect on Corneal Endothelial Cells after Uneventful Phacoemulsification." Open Access Macedonian Journal of Medical Sciences 10, B (2022): 2573–80. http://dx.doi.org/10.3889/oamjms.2022.10900.

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AIM: The purpose of the study was to study the effect of implantation method and fluid load (aspiration time, aspiration volume) on corneal endothelium in uneventful phacoemulsification surgeries. METHODS: This study was a prospective and interventional study involved 77 eyes, 50−81 years, divided into three groups according to implantation method (on Saline, Healon, or Methylcellulose). Specular microscope analysis of corneal endothelial parameters: Cell density (CD), central corneal thickness (CCT), coefficient of variation (CV), and Hexagonality (HEX) were done before and 3 months after sur

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Savić, Živorad N., Ivan I. Soldatović, Milan D. Brajović, Aleksandra M. Pavlović, Dušan R. Mladenović, and Vesna D. Škodrić-Trifunović. "Comparison between Carotid Artery Wall Thickness Measured by Multidetector Row Computed Tomography Angiography and Intimae-Media Thickness Measured by Sonography." Scientific World JOURNAL 11 (2011): 1582–90. http://dx.doi.org/10.1100/tsw.2011.147.

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The increased thickness of the carotid wall >1 mm is a significant predictor of coronary and cerebrovascular diseases. The purpose of our study was to assess the agreement between multidetector row computed tomography angiography (MDCTA) in measuring carotid artery wall thickness (CAWT) and color Doppler ultrasound (CD-US) in measuring intimae-media thickness (IMT). Eighty-nine patients (aged 35–81) were prospectively analyzed using a 64-detector MDCTA and a CD-US scanner. Continuous data were described as the mean value ± standard deviation, and were compared using the Mann–Whitney U test.

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Steenwijk, Brian, and Pablo Druetta. "NumericalStudy of Turbulent Flows over a NACA 0012 Airfoil: Insights into Its Performance and the Addition of a Slotted Flap." Applied Sciences 13, no. 13 (2023): 7890. http://dx.doi.org/10.3390/app13137890.

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This work provides a comprehensive overview of various aspects of airfoil CFD simulations. The airflow around a 2D NACA 0012 airfoil at various angles of attack is simulated using the RANS SST turbulent flow model and compared to experimental data. The airfoil is then modified with a slotted flap and additionally the angle of the flap is altered. The flow model is subsequently coupled to a heat transfer model to compare the isothermal versus non-isothermal performance. The airfoil with the slotted flap shows increased CL and CD values compared to the standard NACA 0012. Larger flap angles furt

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Byelyavsky, S. K., I. P. Katerenchuk, V. I. Lutsenko, et al. "Descending vestibular nucleus forms arterial hypertension." INTERNATIONAL NEUROLOGICAL JOURNAL 21, no. 1 (2025): 14–23. https://doi.org/10.22141/2224-0713.21.1.2025.1146.

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Background. The popular idea that cardiovascular disorders cause dizziness has a weak evidence base. Therefore, the objective of this research was to identify the relationship between vestibular and vascular dysfunctions. Materials and methods. 123 patients were examined, 42 males and 81 females. Blood pressure was increased in 51 people (43.09 %, the main group). Patients with normal blood pressure formed the control group (72 people, 56.91 %). Results. The greatest changes in patients with hypertension compared to those with normal blood pressure were registered during posturography on a sta

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Amaro, Flavia, Maria Alessandra Saltarelli, Marina Primavera, Marina Cerruto, and Stefano Tumini. "Continuous Glucose Monitoring (CGM) and Metabolic Control in a Cohort of Patients with Type 1 Diabetes and Coeliac Disease." Endocrines 4, no. 3 (2023): 595–606. http://dx.doi.org/10.3390/endocrines4030042.

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The association between type 1 diabetes (T1D) and coeliac disease (CD) is well known. Metabolic control of thirty-seven patients aged between 1 and 18 years, with coexisting T1D and CD were evaluated. The control group includes 37 patients affected only by diabetes. All data relating to the metabolic control of all patients were acquired through examination of medical records and CMG reports available on dedicated online platforms. Glucose variability was expressed as Coefficient of Variation (CV) and Standard Deviation of blood glucose values (SD). The formula used for CV computation is: CV (

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Muñoz-Calderón, Arturo A., Susana A. Besuschio, Season Wong, et al. "Loop-Mediated Isothermal Amplification of Trypanosoma cruzi DNA for Point-of-Care Follow-Up of Anti-Parasitic Treatment of Chagas Disease." Microorganisms 10, no. 5 (2022): 909. http://dx.doi.org/10.3390/microorganisms10050909.

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A loop-mediated isothermal amplification assay was evaluated as a surrogate marker of treatment failure in Chagas disease (CD). A convenience series of 18 acute or reactivated CD patients who received anti-parasitic treatment with benznidazole was selected—namely, nine orally infected patients: three people living with HIV and CD reactivation, five chronic CD recipients with reactivation after organ transplantation and one seronegative recipient of a kidney and liver transplant from a CD donor. Fifty-four archival samples (venous blood treated with EDTA or guanidinium hydrochloride-EDTA buffer

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Muñoz-Calderón, Arturo A., Susana A. Besuschio, Season Wong, et al. "Loop-Mediated Isothermal Amplification of Trypanosoma cruzi DNA for Point-of-Care Follow-Up of Anti-Parasitic Treatment of Chagas Disease." Microorganisms 10, no. 5 (2022): 909. http://dx.doi.org/10.3390/microorganisms10050909.

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A loop-mediated isothermal amplification assay was evaluated as a surrogate marker of treatment failure in Chagas disease (CD). A convenience series of 18 acute or reactivated CD patients who received anti-parasitic treatment with benznidazole was selected—namely, nine orally infected patients: three people living with HIV and CD reactivation, five chronic CD recipients with reactivation after organ transplantation and one seronegative recipient of a kidney and liver transplant from a CD donor. Fifty-four archival samples (venous blood treated with EDTA or guanidinium hydrochloride-EDTA buffer

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Zhan, Shukai, Caiguang Liu, Jixin Meng, et al. "Mucosa-Associated Oscillospira sp. Is Related to Intestinal Stricture and Post-Operative Disease Course in Crohn’s Disease." Microorganisms 11, no. 3 (2023): 794. http://dx.doi.org/10.3390/microorganisms11030794.

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Intestinal stricture remains one of the most intractable complications in Crohn’s disease (CD), and the involved mechanisms are poorly understood. Accumulating evidence suggests that the gut microbiota contributes to the pathogenesis of intestinal fibrosis. In this study, we investigated specific mucosa-associated microbiota related to intestinal strictures and their role in predicting postoperative disease course. Twenty CD patients who had undergone operative treatments were enrolled and followed up. Intestinal mucosa and full-thickness sections from stenotic and non-stenotic sites were ster

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Purba, Ronsen, Irpan Pardosi, Harry Darmawan, and Aldo Alex Sitorus. "Pengamanan Data Teks Dengan NTRU dan Modulus Function pada Koefisien IHWT Citra Warna." Jurnal SIFO Mikroskil 20, no. 1 (2019): 59–70. http://dx.doi.org/10.55601/jsm.v20i1.649.

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The development of digital information have caused the rise of information technology security to protect text data that contains secret. Steganography is one of many solutions for securing text data by hiding the text data on an image so that another party would not know the existence of such data. Criteria of a good steganography involves imperceptibility, fidelity, robustness dan recovery. One steganographic method is CD (Coefficient Difference), adopted from PVD (Pixel Value Differencing) which does hiding in spatial domain using difference of two pixel values that results in large modific

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Rosenthal, F. S., and S. Wright. "Assessment of papain-induced lung injury in isolated lungs by measurements of aerosol deposition and mixing." Journal of Applied Physiology 72, no. 2 (1992): 459–67. http://dx.doi.org/10.1152/jappl.1992.72.2.459.

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Aerosol bolus inspirations were used to assess lung injury in 15 isolated dog lungs exposed to low (0–375 units) or high doses (600–1,200 units) of papain. Effective air space size (EAD) was determined from aerosol deposition during a 5-s breath hold. Convective mixing was assessed by the spreading of the expired bolus with respect to expired volume, quantified by a coefficient of dispersion (CD) equal to the square root of the difference in the variances of the expired and inspired boluses divided by the volumetric penetration of the bolus. After exposure, CD measured with deeply penetrating

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Milham, P. J., K. B. P. N. Jinadasa, D. Collins, et al. "Modelling the effects of soil properties on the concentration of Cd extracted by 10 mM CaCl2 from soils of the Sydney Basin." Soil Research 42, no. 7 (2004): 799. http://dx.doi.org/10.1071/sr04017.

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Undisturbed surface soils on the peri-urban fringe of the Sydney Basin are mostly acidic, with low concentrations of total cadmium (Cdt) and a wide range of other properties. In taxonomically similar soils on vegetable farms, Cdt is typically about 20-fold greater and undesirably large concentrations of Cd occur in some of the vegetables. We used a sequence of multiple regression models to evaluate how soil properties, taxonomy, and farming affected the behaviour of Cd in surface composites (0–15 cm) from 29 farmed and 12 unfarmed sites in the Basin. The dependent variable was the log10 transf

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Dowhaniuk, Jenna K., Heather Mileski, Joanne Saab, Perri Tutelman, Lehana Thabane, and Herbert Brill. "The Gluten Free Diet: Assessing Adherence in a Pediatric Celiac Disease Population." Journal of the Canadian Association of Gastroenterology 3, no. 2 (2018): 67–73. http://dx.doi.org/10.1093/jcag/gwy067.

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Abstract Background A strict, lifelong, gluten-free diet (GFD) remains the sole treatment for celiac disease (CD). The assessment of adherence to the GFD in pediatric studies is often based on self-report and visual analogue scales which lack proven validity. We sought to compare parental-report of GFD adherence to expert registered dietitian (RD) assessments, the best available standard. Methods Parents of children with biopsy-proven CD scored their adherence to the GFD on a five-point Likert scale similar to that used in previous pediatric CD studies. Each family was then evaluated by an RD

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Magill, R., L. Shurtz, S. C. Bunt, et al. "A - 23 Comparison of the Connor-Davidson and Brief Resilience Scale in Adolescents With Concussion." Archives of Clinical Neuropsychology 40, Supplement_1 (2025): i23. https://doi.org/10.1093/arclin/acaf058.23.

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Abstract Purpose Resilience has been shown to affect concussion recovery, and both the Connor-Davidson Resilience Scale (CD-RISC) and the Brief Resilience Scale (BRS) are validated measures of resilience. They differ, however, in their approach to assessing this construct. Examining associations between the CD-RISC, BRS, and established measures of emotional symptoms in adolescents following concussion may better elucidate the nuances of their emotional response to concussion. Method Eighty-three participants aged 12–17 (m = 14.6) were evaluated within one month of concussion (±3 days) as part

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Wojujutari, Ajele Kenni, Erhabor Sunday Idemudia, and Lawrence Ejike Ugwu. "Evaluation of reliability generalization of Conner-Davison Resilience Scale (CD-RISC-10 and CD-RISC-25): A Meta-analysis." PLOS ONE 19, no. 11 (2024): e0297913. http://dx.doi.org/10.1371/journal.pone.0297913.

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Background Resilience, a critical multi-faceted construct in psychological research, is often measured using Conner-Davison Resilience Scale (CD-RISC-10 and CD-RISC-25). This reliability generalization (RG) meta-analysis delves into evaluate the level of reliability generalization estimate of both CD-RISC-10 and CD-RISC-25 in assessing resilience across diverse populations and settings. Methods A reliability generalization meta-analysis on the psychometric properties of CD-RISC-10 and CD-RISC-25 was conducted, encompassing 27 studies. The original versions’ psychometric properties were systema

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Yang, Xiaoyu, Yuekun Heng, Zhaohan Li, et al. "The study of acrylic bonding gap stress for the JUNO Central Detector." Journal of Instrumentation 17, no. 07 (2022): T07003. http://dx.doi.org/10.1088/1748-0221/17/07/t07003.

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Abstract The Central Detector (CD) of Jiangmen Underground Neutrino Observatory (JUNO) has a huge acrylic spherical vessel, which will contain 20000 tons of liquid scintillator, being immersed in pure water, endure about 3 × 107 N of buoyancy. It is composed of 263 pieces of acrylic spherical panels bonded by the mass polymerization. Acrylic stress is critical to the structural safety of the JUNO CD, and it is required not to be greater than 3.5 MPa. The specialized measurement system for acrylic stress of the JUNO CD has been designed and realized, which supports non-destructive and quantitat

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Prabhakar, Rao. V. V*1 &. Brahmaji Rao. P2. "DIVERSITY VARIATIONS OF MANGROVE FLORA AMONG CREEKS AND MUDFLATS OF MACHILIPATNAM MANDAL IN KRISHNA DISTRICT." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 8 (2017): 209–19. https://doi.org/10.5281/zenodo.839172.

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Mangrove flora is unique vegetation that survives at high salinity; tidal regimes, strong wind velocity, high temperature and muddy anaerobic soil with the development of some adaptive morphological characteristics.The present study was carried in creeks and mudflats mangrove patches, to find ecological status of the mangrove vegetation and to analyze significant changes. Results shows, highest Important Value Index (IVI) in Kanuru 33.33and Achyyavaripalem is31.82 for Avicennia marina. Highest Maturity index values (MIV) is 71.00 of Kanuru and 31.82 of and 71.00 of Achyyavaripalem .Similarity

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Souza, Cesar Almiro de, Julio Cesar Costa Campos, Antonio Marcos de Oliveira Siqueira, et al. "Experimental Simulation of a Tennis Ball using Wind Tunnel." Journal of Engineering and Exact Sciences 9, no. 1 (2023): 15179–01. http://dx.doi.org/10.18540/jcecvl9iss1pp15179-01e.

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In this study, tennis balls were analyzed experimentally through the use of a wind tunnel with speed ranging from 1m/s to 14 m/s, which is a variation in the Reynolds number (10,000 < Re < 60,000). In this context, aerodynamic aspects of the balls were evaluated, including the position of the seam and the degree fuzz, i.e., with and without fuzz. It was possible to analyze the effect of drag on the diameter, in the investigation of the relationship between the drag coefficient (CD) and the Reynolds number (Re) for new and used balls. Graphics were generated using the Reynolds number and

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Adamcová, Dana, Antonín Kintl, Igor Huňady, et al. "Light Assisted Phytoextraction of Landfill Leachate: An Effective Tool to Attenuate Pollutants in Landfill Leachate." Ecological Chemistry and Engineering S 32, no. 1 (2025): 59–83. https://doi.org/10.2478/eces-2025-0004.

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Abstract In the presented experiment, we tested the influence of irrigation with different proportions of leachate collected from the leachate sump of municipal solid waste landfill in combination with LED light on the capacity of model plant to remove some heavy metals (HMs) (As, Cr, Cd, Ni and Hg) from the soil and to store them in the biomass of model plant Sinapis alba L. There were six variants irrigated either with distilled water (control) or with a combination of distilled water and leachate (20 %, 50 %, 75 %, 90 %, 100 %). The variants were divided into two groups: A (LED) and B (no L

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Takahashi, M., N. Aoyama, and M. Nunotani. "N03 Disease burden of patients with inflammatory bowel disease from the viewpoint of QOL and depression." Journal of Crohn's and Colitis 14, Supplement_1 (2020): S658—S659. http://dx.doi.org/10.1093/ecco-jcc/jjz203.987.

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Abstract Background Inflammatory bowel disease (IBD) can lead to a decreased quality of life (QOL), and mental care is necessary for patients with IBD. Disease burden (patient burden caused by a disease) attracts attention from the viewpoint of QOL and mental care. However, the relationship between QOL and depression in patients with IBD has not yet been adequately researched. Therefore, we aimed to examine disease burden and the relationship between QOL and depression in Japanese patients with IBD. Methods The present study enrolled 200 patients with ulcerative colitis (UC) and 31 patients wi

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Oliveira, Gerlandes Fernandes de, Mariane Albuquerque Lima Ribeiro, Gabriela Vieira de Souza Castro, et al. "Retrospective study of the epidemiological overview of the transmission of Chagas disease in the State of Acre, South-Western Amazonia, from 2009 to 2016." Journal of Human Growth and Development 28, no. 3 (2018): 329–36. http://dx.doi.org/10.7322/jhgd.152187.

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Introduction: Chagas disease (CD), also known as American Trypanosomiasis, is an infectious parasitic disease caused by the etiologic agent Trypanosoma cruzi. It is considered endemic in the low-income population and is classified by the WHO as a neglected tropical disease. In the state of Acre, there is almost no scientific data regarding the epidemiology of CD, even though the first autochthonous case was registered in the 1980s. Objective: To analyze the epidemiological panorama of the transmission of Chagas disease in the State of Acre, Brazil, from 2009 to 2016. Methods: A sur

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Daniyan, O. C., O. Matanmi, O. P. Oladipo, and O. Y. A. Olukosi. "Comfort behaviour in harco strain of cockerels with different drinkers and at different periods ofthe day (short communication)." Archives Animal Breeding 44, no. 5 (2001): 569–74. http://dx.doi.org/10.5194/aab-44-569-2001.

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Abstract. The effects of different drinkers and time of the day on comfort behaviour was studied in two hundred and fifty two cockerels from week 4–8. The types of drinkers used were bamboo drinker (BD), clay pot drinkers (CD) and plastic fountain drinkers (FD). Comfort behaviour was observed in the morning and afternoon and evening. The largest number of total comfort behaviour observed during the four-week period was 3089 in CD, followed by 2326 and 2216 in FD and BD respectively. Preening was the most frequently observed comfort behaviour the average being 57 % of the total comfort behaviou

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