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Journal articles on the topic 'Final volumes method'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Hokkinen, Lasse, Teemu Mäkelä, Sauli Savolainen, and Marko Kangasniemi. "Computed tomography angiography-based deep learning method for treatment selection and infarct volume prediction in anterior cerebral circulation large vessel occlusion." Acta Radiologica Open 10, no. 11 (2021): 205846012110603. http://dx.doi.org/10.1177/20584601211060347.

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Background Computed tomography perfusion (CTP) is the mainstay to determine possible eligibility for endovascular thrombectomy (EVT), but there is still a need for alternative methods in patient triage. Purpose To study the ability of a computed tomography angiography (CTA)-based convolutional neural network (CNN) method in predicting final infarct volume in patients with large vessel occlusion successfully treated with endovascular therapy. Materials and Methods The accuracy of the CTA source image-based CNN in final infarct volume prediction was evaluated against follow-up CT or MR imaging i

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Đuka, Andreja, Ivica Papa, Mihael Lovrinčević, Zoran Bumber, Tomislav Poršinsky, and Kristijan Tomljanović. "Terrestrial vs. UAV-Based Remote Measurements in Log Volume Estimation." Remote Sensing 15, no. 21 (2023): 5143. http://dx.doi.org/10.3390/rs15215143.

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This study compared oak butt-log volume estimations gained through terrestrial measurements in the forest stand with a remote approach using an unmanned aerial system (UAS) and photogrammetric post-processing. Terrestrial measurements were conducted in the lowland part of Croatia after a completed motor–manual final felling of a 140-year-old even-aged oak stand. Butt-logs’ volumes were estimated with four methods: the sectioning method and Huber’s, Smailan’s and Riecke–Newton’s methods. Measuring diameters and lengths and estimating volumes remotely were based on orthophotos using four differe

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Batista, Elsa, Isabel Godinho, George Rodrigues, and Doreen Rumery. "Validation of the Photometric Method Used for Micropipette Calibration." NCSL International measure 13, no. 1 (2021): 40–45. http://dx.doi.org/10.51843/measure.13.1.4.

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There are two methods generally used for calibration of micropipettes: the gravimetric method described in ISO 8655-6:2002 and the photometric method described in ISO 8655-7:2005. In order to validate the photometric method, several micropipettes of different capacities from 0.1 µL to 1000 µL were calibrated using both methods (gravimetric and photometric) in two different laboratories, IPQ (Portuguese Institute for Quality) and Artel. These tests were performed by six different operators. The uncertainty for both methods was determined and it was verified that the uncertainty component that h

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Koopman, Miou S., Olvert A. Berkhemer, Ralph R. E. G. Geuskens, et al. "Comparison of three commonly used CT perfusion software packages in patients with acute ischemic stroke." Journal of NeuroInterventional Surgery 11, no. 12 (2019): 1249–56. http://dx.doi.org/10.1136/neurintsurg-2019-014822.

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Background and purposeCT perfusion (CTP) might support decision making in patients with acute ischemic stroke by providing perfusion maps of ischemic tissue. Currently, the reliability of CTP is hampered by varying results between different post-processing software packages. The purpose of this study is to compare ischemic core volumes estimated by IntelliSpace Portal (ISP) and syngo.via with core volumes as estimated by RAPID.MethodsThirty-five CTP datasets from patients in the MR CLEAN trial were post-processed. Core volumes were estimated with ISP using default settings and with syngo.via u

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Wu, Chen-Sen, Lawrence L. Latour, and Steven Warach. "Clinically Meaningful MRI Perfusion Abnormalities in Acute Stroke: Comparison of Analytic Techniques." Stroke 32, suppl_1 (2001): 339. http://dx.doi.org/10.1161/str.32.suppl_1.339-a.

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P2 Background: MRI perfusion imaging (PWI) can demonstrate hemodynamic abnormalities in acute stroke. The volume of hypoperfusion derived from calculated perfusion parameter maps has been used to predict tissue at risk for infarction and to identify presumptive ischemic penumbra. It is unclear how best to distinguish true tissue at risk from benign hypoperfusion. A first step toward this goal is identifying clinically significant PWI abnormalities in stroke patients. Our purpose was to evaluate four different perfusion parameter maps to determine which algorithm best correlates with clinical s

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Meng, Xiaoliang, Tianyi Wang, Dayu Cheng, et al. "Enhanced Point Cloud Slicing Method for Volume Calculation of Large Irregular Bodies: Validation in Open-Pit Mining." Remote Sensing 15, no. 20 (2023): 5006. http://dx.doi.org/10.3390/rs15205006.

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The calculation of volumes for irregular bodies holds significant relevance across various production processes. This spans tasks such as evaluating the growth status of crops and fruits, conducting morphological analyses of spatial objects based on volume parameters, and estimating quantities for earthwork and excavation. While methods like drainage, surface reconstruction, and triangulation suffice for smaller irregular bodies, larger ones introduce heightened complexity. Technological advancements, such as UAV photogrammetry and LiDAR, have introduced efficient point cloud data acquisition

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Ward, Jeffrey S., George R. Stephens, and Francis J. Ferrandino. "Influence of Cutting Method on Stand Growth in Sawtimber Oak Stands." Northern Journal of Applied Forestry 22, no. 1 (2005): 59–67. http://dx.doi.org/10.1093/njaf/22.1.59.

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Abstract Many upland oak forests in the eastern United States are approaching economic and biological maturity. A study was established in 1981–1984 in three central Connecticut forests to examine the effects of six distinct cutting methods (shelterwood, diameter limit, multiaged crop tree, high grading, silvicultural clearcut, forest preserve) on stand growth and dynamics in sawtimber oak stands. Board-foot volumes (International 1/4) averaged 8.4 mbf/ac before the initial harvest. Sixty-nine percent of sawtimber trees had butt-log grades of 2 or better. Volume growth was significantly lower

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Jeong, Jaecheol, Suyeon Jeon, and Yong Seok Heo. "An Efficient Stereo Matching Network Using Sequential Feature Fusion." Electronics 10, no. 9 (2021): 1045. http://dx.doi.org/10.3390/electronics10091045.

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Recent stereo matching networks adopt 4D cost volumes and 3D convolutions for processing those volumes. Although these methods show good performance in terms of accuracy, they have an inherent disadvantage in that they require great deal of computing resources and memory. These requirements limit their applications for mobile environments, which are subject to inherent computing hardware constraints. Both accuracy and consumption of computing resources are important, and improving both at the same time is a non-trivial task. To deal with this problem, we propose a simple yet efficient network,

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Hrušková, M., and J. Skvrnová. "Use of maturograph and spring oven for the dermination of wheat flour baking characteristics." Czech Journal of Food Sciences 21, No. 2 (2011): 71–77. http://dx.doi.org/10.17221/3479-cjfs.

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Quality characteristics of 30 commercial wheat flour samples from Czech industrial mills and 30 wheat flour samples prepared from wheat varieties cultivated in experimental fields (all from wheat harvest 2000) were analysed in detail including maturograph and spring oven (both from Brabender, Germany) as well as bread baking test (Czech method). Specific bread volumes of all flour samples were compared with the bread volumes determined by the oven spring test. The correlation analysis which expressed the relations between wheat flour rheological characteristics and the bread volume is reported

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Wiig, H., M. DeCarlo, L. Sibley, and E. M. Renkin. "Interstitial exclusion of albumin in rat tissues measured by a continuous infusion method." American Journal of Physiology-Heart and Circulatory Physiology 263, no. 4 (1992): H1222—H1233. http://dx.doi.org/10.1152/ajpheart.1992.263.4.h1222.

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Steady-state 125I-labeled rat serum albumin (125I-labeled RSA) concentration in plasma was maintained by intravenous infusion of tracer for 72-168 h with an implanted osmotic pump. At the end of the infusion period, the rat was anesthetized and nephrectomized, and extracellular fluid was equilibrated with intravenous 51Cr-labeled EDTA for 4 h. Five minutes before final plasma and tissue sampling, 131I-labeled bovine serum albumin (131I-labeled BSA) was injected intravenously as a plasma volume marker. Samples of skin, muscle, tendon, and intestine were assayed for all three tracers. Apparent d

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Calbo, Adonal Gimenez, and Amauri Alves Nery. "Methods for Measurement of Gas Volume of Fruits and Vegetables." Journal of the American Society for Horticultural Science 120, no. 2 (1995): 217–21. http://dx.doi.org/10.21273/jashs.120.2.217.

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Theory is presented for a differential mass-volume technique to measure non-destructively gas volume (Vg) changes, based only on the initial and final masses and volumes of an organ. Volume was measured using Archimedes' principle, but a non-invasive image analysis procedure could be an improvement. A reduction in Vg during the ripening of `Kada' tomato (Lycopersicon esculentum Mill) fruits, and irreversible Vg changes of 0.02, 0.29, 0.66, 1.2, and 1.3 ml for mature-green fruits compressed by 0, 2.5, 5.0, 7.5. and 10 mm for 5 minutes indicates the potential of this procedure. The method was co

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Ferenčík, Michal, Zuzana Dudáková, Miroslav Kardoš, Miroslav Sivák, Katarína Merganičová, and Ján Merganič. "Measuring Soil Surface Changes after Traffic of Various Wheeled Skidders with Close-Range Photogrammetry." Forests 13, no. 7 (2022): 976. http://dx.doi.org/10.3390/f13070976.

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Soil surface is directly affected by heavy traffic of machinery during harvesting operations. Machine traffic often causes damage to forest soil which is visible on the surface (ruts) and invisible changes in, for example, bulk density, penetration resistance, etc. Close-range photogrammetry is the state-of-the-art method used for recording and evaluation of visible changes. This study aims to analyze soil surface changes caused by traffic of three types of wheeled skidders without a load on Cambisol soil in Central Slovakia. We use the Structure-from-Motion (SfM) close-range photogrammetry to

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Santos, R. S., D. P. A. Peña, D. D. S. Diniz, G. A. Costa, J. G. A. Queiroz, and S. R. F. Neto. "Brick Drying Simulations by Finite Volume Method." Materials Science Forum 930 (September 2018): 115–19. http://dx.doi.org/10.4028/www.scientific.net/msf.930.115.

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There are numerous studies on the application of ceramic materials, such as bricks, in the various engineering and manufacturing fields. Ceramic bricks are manufactured from humidified clay and are classified as structural ceramics. When exposed to drying the process is not precisely controlled, defects such as cracks, deformations and warping can arise, which compromise the final physical and structural properties of the product. Seeking to solve the procedure through simulations, this work presents a numerical study on a brick drying. A three-dimensional transient model is presented to predi

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Haryono, Ahmad Fauzan. "FINAL PIT PLANNING COAL MINING IN 16 PHASE 2 SEAMS IN PT. KTC COAL MINING & ENERGY, KECAMATAN. PALARAN, SAMARINDA, EAST KALIMANTAN." Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics 2, no. 2 (2019): 112–18. http://dx.doi.org/10.15408/fiziya.v2i2.12775.

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Mining stage design which is a complex problem in terms of three-dimensional geometry that is always changing, then in this thesis the pit limit, mine sequence design or mining stages are in accordance with the tolerance stripping ratio recommended by the company and the production equipment to be used in order to obtain production targets the optimal. The research was conducted using software to design the final pit and block model method to calculate the volume. The results of the research that have been carried out obtained 752,930 MT of mined reserves and Over Burden (OB) volumes of 4,439,

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Wahlers, Richard L., James D. Burton, Eleanor P. Maness, and Walter A. Skroch. "A stem cut and blade delivery method of herbicide application for weed control." Weed Science 45, no. 6 (1997): 829–32. http://dx.doi.org/10.1017/s0043174500089037.

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Greenhouse and field studies were conducted to investigate the responses of container-grown dogfennel, multiflora rose, and purple loosestrife to clopyralid or triclopyr applied to plants from a pruning shear blade. Clopyralid or triclopyr was diluted with water to various concentrations and placed on one side of a pruning shear blade in final volumes of either 1 or 5 μl. The shears were then used to sever and treat stems. Results indicated that 20% triclopyr concentrations in 5-μl total volume (360 μg active) gave ≥ 96% reductions of foliar regrowth in dogfennel, multiflora rose, and purple l

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Wang, Tong, Ying Li, Shengtao Yu, and Yu Liu. "Estimating the Volume of Oil Tanks Based on High-Resolution Remote Sensing Images." Remote Sensing 11, no. 7 (2019): 793. http://dx.doi.org/10.3390/rs11070793.

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The purpose of this study is to obtain oil tank volumes from high-resolution satellite imagery to meet the need to measure oil tank volume globally. A preprocessed remote sensing HSV image is used to extract the shadow of the oil tank by Otsu thresholding, shadow area thresholding, and morphological closing. The oil tank shadow is crescent-shaped. Hence, a median method based on sub-pixel subdivision positioning is used to calculate the shadow length of the oil tank and then determine its height with high precision. The top of the tank and its radius in the image are identified using the Hough

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Le, Minh, Srinivas R. Geedipally, Kay Fitzpatrick, and Raul E. Avelar. "Estimating Pedestrian Volumes for Signalized and Stop-Controlled Intersections." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 9 (2020): 799–808. http://dx.doi.org/10.1177/0361198120932161.

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Pedestrian fatal crashes in the U.S. have increased over the years. From 2007 to 2016, pedestrian fatalities increased 27% nationally, while all other traffic fatalities decreased 14%. On average, a pedestrian was killed every 1.5 h in traffic crashes in 2016. The Federal Highway Administration (FHWA) has been working with public agencies toward developing more data-driven approaches to identify and mitigate pedestrian safety issues. However, pedestrian exposure to risk is not readily available. The absence of pedestrian exposure data makes it challenging to identify and prioritize high-crash

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Semrud-Clikeman, Margaret, Jodene Goldenring Fine, Jesse Bledsoe, and David C. Zhu. "Regional Volumetric Differences Based on Structural MRI in Children With Two Subtypes of ADHD and Controls." Journal of Attention Disorders 21, no. 12 (2014): 1040–49. http://dx.doi.org/10.1177/1087054714559642.

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Objective: The purpose of this study was to compare groups of children with two subtypes of ADHD and controls on selected regions using volumetric magnetic resonance imaging (MRI) measures. Children with ADHD were expected to have smaller volumes of the anterior cingulate cortex (ACC) and caudate. Parent behavioral rating measures of hyperactivity were predicted to relate to the volume of the caudate and attention with the ACC. Method: There were a total of 74 children in the final sample (27 controls, 25 ADHD:Combined type [ADHD:C], 22 ADHD:Inattentive type [ADHD:I]). Results: Findings indica

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Ikner, Luisa A., Marcela Soto-Beltran, and Kelly R. Bright. "New Method Using a Positively Charged Microporous Filter and Ultrafiltration for Concentration of Viruses from Tap Water." Applied and Environmental Microbiology 77, no. 10 (2011): 3500–3506. http://dx.doi.org/10.1128/aem.02705-10.

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ABSTRACTThe methods used to concentrate enteric viruses from water have remained largely unchanged for nearly 30 years, with the most common technique being the use of 1MDS Virozorb filters followed by organic flocculation for secondary concentration. Recently, a few studies have investigated alternatives; however, many of these methods are impractical for use in the field or share some of the limitations of this traditional method. In the present study, the NanoCeram virus sampler, an electropositive pleated microporous filter composed of microglass filaments coated with nanoalumina fibers, w

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Fenton, R. A., H. B. Moeller, S. Nielsen, B. L. de Groot, and M. Rützler. "A plate reader-based method for cell water permeability measurement." American Journal of Physiology-Renal Physiology 298, no. 1 (2010): F224—F230. http://dx.doi.org/10.1152/ajprenal.00463.2009.

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Cell volume and water permeability measurements in cultured mammalian cells are typically conducted under a light microscope. Many of the employed approaches are time consuming and not applicable to a study of confluent epithelial cell monolayers. We present here an adaptation of a calcein-quenching-based approach for a plate reader. A standard curve of fluorescence intensities at equilibrium has been recorded, following a shift from 285 mosmol/kgH2O to a series of altered extracellular osmolyte concentrations, ranging from final concentrations of 185 to 585 mosmol/kgH2O, by changing buffer d-

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Tokarieva, O. V. "Features of application of timber harvest methods in the forests of Ukraine." Ukrainian Journal of Forest and Wood Science 12, no. 1 (2021): 34–40. http://dx.doi.org/10.31548/forest2021.01.004.

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In this paper, we present the basic features of final felling in Ukraine. Prevailing timber harvest methods and their areas were considered. For analyzing the volumes of modern forest exploitation were data from permits for final felling on actual cuttings in of all forestry enterprises of Ukraine. Studies were conducted for the period 2019-2020. It was installed that clearcutting is the main timber harvest method (95 % in Kyiv region, 45 % in Lviv region). Among other methods, the leading place is shelterwood. During the study period, only two (uniform and strip) and three (group) reception o

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Hwang, Chi Sang, Kum Whang, Hee Sung Chae, et al. "Sphenoid Sinus Fat Packing in Transsphenoidal Surgery: Long-Term Fate Assessment Using Magnetic Resonance Imaging." Journal of Rhinology 27, no. 1 (2020): 28–33. http://dx.doi.org/10.18787/jr.2019.00297.

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Background and Objectives: Following the transsphenoidal approach (TSA), appropriate sphenoid sinus fat packing has been preferred to prevent postoperative cerebrospinal fluid leakage; however, studies on the behavior of fat tissue transplanted in the sphenoid sinus are lacking. This study aimed to determine the long-term fate of these fat grafts using magnetic resonance imaging (MRI).Subjects and Method: A total of 139 postoperative MRI scans of 41 patients who underwent sphenoid sinus fat packing using the standard TSA were evaluated. Additionally, MRI time series indicating the vital fat vo

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Jia, Zhen Tang, and Yan Fang Han. "Volume Measurement of Deposits Based on Stereo Vision and SURF." Applied Mechanics and Materials 743 (March 2015): 533–36. http://dx.doi.org/10.4028/www.scientific.net/amm.743.533.

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Based on the stereo vision principle, a volume measurement method of deposit is realized. The principle can be applied for the measurement of deposits with messy texture, such as rubbish, construction waste, and small mounds. After camera calibration and image rectification, the disparity of key points are calculated using SURF feature point matching, and the mismatched point pairs are kick out by the epipolar line constrain. Delaunay triangular meshes are created on the final point pairs. Then the volumes of deposit heap are calculated according to the pinhole imaging model. Experiments show

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Lippera, Myrta, George Moussa, Tsveta Ivanova, et al. "Volumetric Biomarkers of Visual Outcome after Surgical Repair in Lamellar Macular Holes." Journal of Personalized Medicine 14, no. 7 (2024): 755. http://dx.doi.org/10.3390/jpm14070755.

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Background: We investigate novel OCT parameters, based on the volumetric analysis of lamellar macular holes (LMHs), as prognostic indicators for visual outcomes after surgery. Methods: LMHs were divided into degenerative LMHs (D-LMHs) and ERM-foveoschisis (ERM-FS). Pre-operative clinical, OCT linear and volumetric parameters were collected. Volumes were obtained using the OCT automatic segmentation, such as central retinal volume (CRV) and outer nuclear layer (ONL) volume, or using a novel method to calculate volumes of specific LMH entities like epiretinal proliferation (ERP), foveal cavity (

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Leskinen, Stephaney D., and Daniel V. Lim. "Rapid Ultrafiltration Concentration and Biosensor Detection of Enterococci from Large Volumes of Florida Recreational Water." Applied and Environmental Microbiology 74, no. 15 (2008): 4792–98. http://dx.doi.org/10.1128/aem.00052-08.

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ABSTRACT Monitoring recreational waters for fecal contamination by standard methodologies involves culturing indicator bacteria, such as fecal coliforms and enterococci. Delayed reporting of microbial water quality parameters increases the likelihood of public exposure to pathogens of fecal origin, making the development of rapid methods important for public health protection. A rapid assay for enterococci was developed using a combined ultrafiltration-biosensor procedure. Twelve 100-liter water samples were collected from upper Tampa Bay over a 9-month period. The samples were collected on si

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Senior, Louise M., and Dunbar P. Birnie III. "Accurately Estimating Vessel Volume from Profile Illustrations." American Antiquity 60, no. 2 (1995): 319–34. http://dx.doi.org/10.2307/282143.

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The highly fragmented nature of most archaeological ceramic assemblages makes whole or reconstructible vessels valuable and rare finds. Vessel volume has rarely been systematically quantified because convenient reconstruction methods dealing with sherds and partial vessels have been lacking. Now, with the method presented in this paper, highly accurate volumetric capacities of fragmented vessels can be calculated from carefully prepared vessel profile illustrations. The profile is digitized using a small number of points per vessel (20 to 30 points are usually sufficient). These data are then

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Demirci, Mehmet, Ahmet Yeşil, and Pete Bettinger. "Using Mixed Integer Goal Programming in Final Yield Harvest Planning: A Case Study from the Mediterranean Region of Turkey." Forests 11, no. 7 (2020): 744. http://dx.doi.org/10.3390/f11070744.

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A mixed integer goal programming model is developed to address the regeneration planning problems of even-aged forests in the Mediterranean region of Turkey. The unique aspect of the goal programming formulation is to minimize deviations in scheduled wood product volumes and the size of harvest areas within each time period, as these are important goals for the management area. About 98% of the forests in Turkey are considered even-aged, and 2% are uneven-aged. Therefore, an age class method is used for the planning of even-aged forests. For the areas where this method is applied, reaching the

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Brezzi, Lorenzo, Edoardo Carraro, Davide Pasa, Giordano Teza, Simonetta Cola, and Antonio Galgaro. "Post-Collapse Evolution of a Rapid Landslide from Sequential Analysis with FE and SPH-Based Models." Geosciences 11, no. 9 (2021): 364. http://dx.doi.org/10.3390/geosciences11090364.

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Propagation models can study the runout and deposit of potential flow-like landslides only if a reliable estimate of the shape and size of the volumes involved in the phenomenon is available. This aspect becomes critical when a collapse has not yet occurred and the estimation of the unstable volume is not uniquely predictable. This work proposes a strategy to overcome this problem, using two established analysis methods in sequence; first, a Strength Reduction Method (SRM)-based 3D FEM allows the estimate of the instable volume; then, this data becomes an input for a Smoothed Particle Hydrodyn

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Speth, Anna, Andrea Dell’Orco, Justus F. Kleine, et al. "Brain Atrophy Is Associated with Hematoma Expansion in Intracerebral Hemorrhage, Depending on Coagulation Status." Journal of Clinical Medicine 14, no. 7 (2025): 2227. https://doi.org/10.3390/jcm14072227.

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Background/Objectives: This study aimed to research the potential association between brain atrophy and hematoma expansion (HE) in intracerebral hemorrhage (ICH). Methods: A retrospective analysis was conducted using data from patients with primary ICH in our stroke database. ICH volumes from initial and follow-up CT scans were manually segmented. Total brain and intracranial volumes were quantified using an automated head CT segmentation method. Normalized brain volume (NBV) was calculated by dividing the total brain volume by the total intracranial volume to account for individual head size

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Muh. Hanif, Rahma Kemala Dewi, Abu Dharin, and Florian Pohl. "Learning Al-Qur'an Using Asy-Syifaa Method at Islamic Pre-Elementary School." Jurnal Iqra' : Kajian Ilmu Pendidikan 8, no. 1 (2023): 210–23. http://dx.doi.org/10.25217/ji.v8i1.2529.

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Islamic Pre-Elementary school or Taman Pendidikan Al-Qur’an (TPQ) was a non-formal education in the field of the Islamic religion to create a generation that was Al-Qur’an and has good morals. At TPQ, various methods of learning the Qur'an were used to assist the learning of the Al-Qur’an to teach effectively. The article aimed to describe how the Asy-Syifaa method was implemented in the Al-Qur'an learning process at TPQ MNU Miftahul Ulum. In the implementation of it’s learning, several activities start from opening, core, and closing. This research included qualitative research by using the c

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Vyatkin, S. I., and B. S. Dolgovesov. "A METHOD FOR PREPARING FUNCTIONALLY SPECIFIED MODELS FOR 3D PRINTING." Vestnik komp'iuternykh i informatsionnykh tekhnologii, no. 243 (September 2024): 3–10. https://doi.org/10.14489/vkit.2024.09.pp.003-010.

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3D printing is widely used in industry, architecture, aerospace, crafts, art, etc. 3D printing based on a variety of materials allows you to create objects from complex heterogeneous materials. However, there are huge computational difficulties. The problem of 3D printing is still open for research. We propose a method for synthesizing objects with a variety of materials for 3D printing. The method supports the procedural evaluation of geometric details and the composition of the material. Functionally defined models provide compact database storage. In the method, only a small part of the fin

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Um, Jumyung, Joungmin Park, and Ian Anthony Stroud. "Squashed-Slice Algorithm Based on STEP-NC for Multi-Material and Multi-Directional Additive Processes." Applied Sciences 11, no. 18 (2021): 8292. http://dx.doi.org/10.3390/app11188292.

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Even though additive manufacturing is receiving increasing interest from aerospace, automotive, and shipbuilding, the legacy approach using tessellated form representation and cross-section slice algorithm still has the essential limitation of its inaccuracy of geometrical information and volumetric losses of final outputs. This paper introduces an innovative method to represent multi-material and multi-directional layers defined in boundary-representation standard model and to process complex sliced layers without missing volumes by using the proposed squashing operation. Applications of the

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del-Campo-Sanchez, Ana, Miguel Moreno, Rocio Ballesteros, and David Hernandez-Lopez. "Geometric Characterization of Vines from 3D Point Clouds Obtained with Laser Scanner Systems." Remote Sensing 11, no. 20 (2019): 2365. http://dx.doi.org/10.3390/rs11202365.

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The 3D digital characterization of vegetation is a growing practice in the agronomy sector. Precision agriculture is sustained, among other methods, by variables that remote sensing techniques can digitize. At present, laser scanners make it possible to digitize three-dimensional crop geometry in the form of point clouds. In this work, we developed several methods for calculating the volume of vine wood, with the final intention of using these values as indicators of vegetative vigor on a thematic map. For this, we used a static terrestrial laser scanner (TLS), a mobile scanning system (MMS),

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Carignan, Germain, Karen Carrier, and Stephen Sved. "Assay of Oxytetracycline Residues in Salmon Muscle by Liquid Chromatography with Ultraviolet Detection." Journal of AOAC INTERNATIONAL 76, no. 2 (1993): 325–28. http://dx.doi.org/10.1093/jaoac/76.2.325.

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Abstract A novel method for the assay of oxytetracycline residues in salmon muscle is described. Tissue is homogenized with 4 volumes of 1 % metaphosphoric acid in the presence of a small amount of dichloromethane (0.4 volume), shaken, and centrifuged. The residue is washed twice (4 and 2 volumes, respectively) with 1 % metaphosphoric acid, and the combined aqueous supernatants are concentrated to about 2 mL by flash evaporation and then diluted to 5 mL. Filtered aliquots of the extract are subjected to liquid chromatography using a C18 column with a mobile phase of acetonitrile-tetrahydrofura

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Wei, Fangzheng, Zhiyong Guo, Qiaoli Han, and Wenkai Qi. "Estimation of Wind Turbine Blade Icing Volume Based on Binocular Vision." Applied Sciences 15, no. 1 (2024): 114. https://doi.org/10.3390/app15010114.

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Icing on wind turbine blades in cold and humid weather has become a detrimental factor limiting their efficient operation, and traditional methods for detecting blade icing have various limitations. Therefore, this paper proposes a non-contact ice volume estimation method based on binocular vision and improved image processing algorithms. The method employs a stereo matching algorithm that combines dynamic windows, multi-feature fusion, and reordering, integrating gradient, color, and other information to generate matching costs. It utilizes a cross-based support region for cost aggregation an

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Kazungu, ML, NA Wekesa, KB Balozi, OJ Manyala, KJ Maghanga, and L. Etiégni. "Defluoridation of water by the Homa* method, a co-precipitation technique using wood ash leachate and alum." Annals of Civil and Environmental Engineering 6, no. 1 (2022): 031–39. http://dx.doi.org/10.29328/journal.acee.1001037.

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High fluoride level in drinking water is an endemic public health concern in East Africa. Unlike in Kenya where it is absent, the Nalgonda technique, a defluoridation method that uses two chemicals, alum, and CaO, has seen mixed results in its application and adoption in Ethiopia and Tanzania. This has been due to the low capacity of communities to manage the process and the breakdown in the supply chain of chemicals used in the technique. In the present study, we attempted to bridge the gap in the chemical deficit by investigating the possible substitution of CaO with leachate from wood ash,

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Gault, Baptiste, Frederic de Geuser, Leigh T. Stephenson, Michael P. Moody, Barrington C. Muddle, and Simon P. Ringer. "Estimation of the Reconstruction Parameters for Atom Probe Tomography." Microscopy and Microanalysis 14, no. 4 (2008): 296–305. http://dx.doi.org/10.1017/s1431927608080690.

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The application of wide field-of-view detection systems to atom probe experiments emphasizes the importance of careful parameter selection in the tomographic reconstruction of the analyzed volume, as the sensitivity to errors rises steeply with increases in analysis dimensions. In this article, a self-consistent method is presented for the systematic determination of the main reconstruction parameters. In the proposed approach, the compression factor and the field factor are determined using geometrical projections from the desorption images. A three-dimensional Fourier transform is then appli

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Senger, Anne B., and Timothy C. Mueser. "Rapid preparation of custom grid screens for crystal growth optimization." Journal of Applied Crystallography 38, no. 5 (2005): 847–50. http://dx.doi.org/10.1107/s0021889805019953.

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Initial crystallization conditions are typically discovered using commercially available sparse-matrix screens. Positive results are then refined using some type of expansion tray. For example, coarse and shallow gradients can be prepared which vary single chemical parameters around the initial conditions in a grid-screen format. Expansion trays are customarily formulated using numerous volume calculations and pipetting stock solutions into individual wells. This tedious process is plagued by pipetting errors, including differences in viscosity, small volumes with large dilutions, evaporation

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Zápalková, Petra, Václav Smítka, and Milan Mikoláš. "Comparison of Tacheometry and Laser Scanning Methods for Measuring the Quarry in Jakubčovice Nad Odrou / Porovnání Tachymetrie A Laserového Skenování Při Zaměření Části Lomu V Jakubčovicích Nad Odrou." GeoScience Engineering 57, no. 3 (2011): 73–88. http://dx.doi.org/10.2478/gse-2014-0030.

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Abstract The presented this method is more efficient for surveying a site. Part of this is the calculation of the volumes of excavated muck using 3D models and their comparison. The comparison of the measurements of part of the quarry in Jakubčovice nad Odrou using the tacheometry and laser scanning techniques was performed. The final assessment was in favour of the laser scanning method which provides capturing the entire object surface with a chosen level of detail compared to the tacheometry method, in which only characteristic points of the measured object, such as edges, are captured.

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Li, Yue En, Jun Zhao, W. Wang, and Q. Y. Cao. "A Mathematical Model of EEBP for HSM Surface Quality Prediction." Advanced Materials Research 97-101 (March 2010): 2123–27. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.2123.

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The main purpose of this study was to construct a relationship between the cutting parameters and the machined surface on high speed milling operation. An optimization algorithm using an Exponential Equation and BP method (EEBP) is then applied to determine optimal cutting parameters. For using the method, once the material removal volumes for machined parts of the high speed milling operations are given, the surface quality could be predicted. The final result we choose the surface roughness prediction as an example of H13 dies steel HSM in this paper, it presents that the method is efficient

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Cai, Kun, and Shi Jiao. "Volumes Constrained Layout Optimization of a Continuum with Multiple Materials." Key Engineering Materials 480-481 (June 2011): 619–23. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.619.

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A sequencing approach is presented to deal with the layout optimization of a continuum with multiple materials. Commonly, a structure may not have only one type of solid phase, e.g., steel-reinforced concrete structure. To have an excellent mechanical performance of the structure, the layout of the steel-lips should be optimized. It is difficult to solve such kind of optimization problem by traditional method, especially, the number of phases is big. In this work, a criterion method is presented and the essentials of the method are as follows. For example, a structure with many materials, howe

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Astudillo, Patricio, Peter Mortier, Johan Bosmans, et al. "Automatic Detection of the Aortic Annular Plane and Coronary Ostia from Multidetector Computed Tomography." Journal of Interventional Cardiology 2020 (May 28, 2020): 1–9. http://dx.doi.org/10.1155/2020/9843275.

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Anatomic landmark detection is crucial during preoperative planning of transcatheter aortic valve implantation (TAVI) to select the proper device size and assess the risk of complications. The detection is currently a time-consuming manual process influenced by the image quality and subject to operator variability. In this work, we propose a novel automatic method to detect the relevant aortic landmarks from MDCT images using deep learning techniques. We trained three convolutional neural networks (CNNs) with 344 multidetector computed tomography (MDCT) acquisitions to detect five anatomical l

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Delaney, Ed, David Rosinski, Harvey Ellis, Keith A. Samolyk, and Jeffrey B. Riley. "An In-Vitro Comparison between Hemobag® and Non-Hemobag® Ultrafiltration Methods of Salvaging Circuit Blood Following Cardiopulmonary Bypass." Journal of ExtraCorporeal Technology 42, no. 2 (2010): 128–33. http://dx.doi.org/10.1051/ject/201042128.

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Ultrafiltration of the residual cardiopulmonary bypass circuit blood has become one of the most advantageous procedures to maximize autologous whole blood recovery and coagulation management in cardiovascular surgery. In this invitro study, the Hemobag® technique (HB) was compared to the most common non-Hemobag® method (NHB) of hemoconcentrating residual circuit blood. The residual bovine blood from 10 identical extracorporeal circuits was processed by the recirculating HB technique or by a venous reservoir NHB concentration method. Blood component concentrations and hemolysis levels were meas

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Angelini, A., P. Accorsi, A. Iacone, et al. "Concentration of Human Hematopoietic Stem Cells in Bone Marrow Transplantation: Results of a Multicenter Study Using Baxter CS 3000 plus Cell Separator." International Journal of Artificial Organs 16, no. 5_suppl (1993): 13–18. http://dx.doi.org/10.1177/039139889301605s03.

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Preliminary BM processing to produce an enriched MNC fraction from large BM volumes improves subsequent pharmacological and/or immunological “ex vivo” treatment and cryopreservation. We detail on a multicenter study (6 Transplant Centers) performed to establish an effective and reliable protocol using a CS 3000 continuous flow separator on a large series of BM processed for autologous (96) and allogeneic (12) transplantation. The reduction in volume was 78.6+7.2% while 28.9+12.4% of the original nucleated cells were found in the final product. A mean of 84.3+13.2% of the starting MNC was yield

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Kaplin, M. I., T. R. Bilan, V. M. Makarov, and M. O. Perov. "Specific features of the application of cost form of the model of interproduct balance for determining the volume and price indicators of the development of energy sector and other branches of economy of the country." Problems of General Energy 2020, no. 3 (2020): 22–29. http://dx.doi.org/10.15407/pge2020.03.022.

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The deformation of price system due to the inflated prices for energy resources, raw materials and supplies has led to an unreasonable rise of prices for products, a decrease in the competitiveness of country's economy, a reduction of the demand for products and, consequently, their output. These factors have led to an increase in the share of intermediate consumption in the structure of output and are one of the main reasons for low profitability, crisis of sales and increase in debt between domestic enterprises. In this context, the aim of this article is to study the possibility of applying

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Kenzhebekov, D. M., А. Е. Khussanov, I. Iristaev, А. Zholshybek, and D. Janabayev. "GENERATION AND CONFIGURATIONOF A HEAT EXCHANGER MODEL GRID FOR CFD MODELING IN COMSOL MULTIPHYSICS." Mechanics and Technologies, no. 1 (March 30, 2025): 279–85. https://doi.org/10.55956/ptul4611.

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The stages of creating a three-dimensional computational domain and generating a grid model for CFD modeling of flow hydrodynamics in a pipe-in-pipe heat exchanger are considered in detail. The sequence of actions for grid generation in COMSOL multiphysics is described. A description is given of the method of thickening the grid by dissecting the volume with a surface and constructing grids with the required interval in each of the resulting connected volumes. A model grid with triangular and square elements was used for the heat exchange model. The construction and adjustment of the model gri

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Rylski, Bartosz, Florian Mayer, Friedhelm Beyersdorf, et al. "How to minimize air embolisms during thoracic endovascular aortic repair with Relay Pro?" Interactive CardioVascular and Thoracic Surgery 30, no. 2 (2019): 293–95. http://dx.doi.org/10.1093/icvts/ivz261.

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Abstract The aim of this study was to evaluate the volume of air released from Relay Pro NBS thoracic stent grafts using different de-airing methods. The gas volume was measured in an in vitro experimental setting. Stent grafts were de-aired via (i) standard saline flushing (40 ml), (ii) increased volume saline flushing (120 ml), (iii) carbon dioxide followed by 40 ml saline flushing and (iv) de-airing with 40 ml of saline in an ultrasound bath. The volume of gas released was measured separately while introducing the folded stent graft in the delivery device into the simulated aorta (step 1) a

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Gaul, Florian, William D. Bugbee, Heinz R. Hoenecke, and Darryl D. D’Lima. "A Review of Commercially Available Point-of-Care Devices to Concentrate Bone Marrow for the Treatment of Osteoarthritis and Focal Cartilage Lesions." CARTILAGE 10, no. 4 (2018): 387–94. http://dx.doi.org/10.1177/1947603518768080.

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Objective Mesenchymal stem cells (MSCs) are a promising cell-based therapy treatment option for several orthopedic indications. Because culture expansion of MSC is time and cost intensive, a bedside concentration of bone marrow (BM) aspirate is used as an alternative. Many commercial systems are available but the available literature and knowledge regarding these systems is limited. We compared different point-of-care devices that concentrate BM (BMC) by focusing on technical features and quality parameters to help surgeons make informed decisions while selecting the appropriate device. Method

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Zhu, Cai-Hui. "Post-construction settlement estimation and increased earthwork volumes calculation of high loess fill." Journal of Geo-Engineering Sciences 3, no. 1 (2016): 43–55. http://dx.doi.org/10.3233/jgs-150035.

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In this study, the post-construction settlement (PCS) area distribution of high fill was analyzed based with reference to a case history of an airport runway crossing a deep gully reclaimed by a thick fill of loess. Earthwork volumes (EV) attributed to PCS was calculated based on in-situ tests. Results showed that the uneven PCS were related to fill depth, construction time, fill rate, integrated compaction degree, and boundary conditions. An empirical equation that considers the aforementioned influence factors was established to calculate the final PCS of high fill. The surface PCS of high f

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Kim, Eunhye, Tsatsral Amarbayasgalan, and Hoon Jung. "Efficient Weighted Ensemble Method for Predicting Peak-Period Postal Logistics Volume: A South Korean Case Study." Applied Sciences 12, no. 23 (2022): 11962. http://dx.doi.org/10.3390/app122311962.

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Demand prediction for postal delivery services is useful for managing logistic operations optimally. Particularly for holiday periods, namely the Lunar New Year and Korean Thanksgiving Day (Chuseok) in South Korea, the logistics service increases sharply compared with the usual period, which makes it hard to provide reliable operation in mail centers. This study proposes a Multilayer Perceptron-based weighted ensemble method for predicting the accepted parcel volumes during special periods. The proposed method consists of two main phases: the first phase enriches the training dataset via synth

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