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Journal articles on the topic 'D-H parameters'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Namazian, Mansoor, Nasim Orangi, and Mohammad R. Noorbala. "Thermodynamic stability and structural parameters of carbon nanoclusters." Journal of Theoretical and Computational Chemistry 13, no. 07 (2014): 1450058. http://dx.doi.org/10.1142/s0219633614500588.

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Thermodynamic stability of neutral carbon nanoclusters of C m, up to the size of C 50 have been investigated using density functional theory. Four different symmetry point groups, C (m/2)h, acetylenic D (m/2)h, cumulenic D (m/2)h and D mh, have been considered for the clusters and the C (m/2)h has been found to be the most stable isomer for the studied clusters. Peierls transition is also studied for acetylenic D (m/2)h and cumulenic D (m/2)h point groups. It has been revealed that the relative stability of clusters converges to a constant value for clusters larger than C 38. The changes of ca

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2

Williams, Priscilla, Tirupati Bolisetti, and Ram Balachandar. "Evaluation of governing parameters on pier scour geometry." Canadian Journal of Civil Engineering 44, no. 1 (2017): 48–58. http://dx.doi.org/10.1139/cjce-2016-0133.

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Current scour estimation methods typically over-predict scour, resulting in uneconomical design. This tendency is partly due to the complexity of the scouring process, which indicates that some of its aspects are still not well understood, and can also be attributed to scale effects. Here, experiments are conducted to isolate the influence of relative coarseness (D/d50) and flow shallowness (h/D) on scour depth. For the range of D/d50 in the present study, equilibrium scour depth (dse/D) decreases with increasing D/d50 until a limiting value of D/d50 = 175, after which dse/D ≈ 0.75. Furthermor

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3

Rutley, B. D., and R. J. Hudson. "Seasonal energetic parameters of free-grazing bison (Bison bison)." Canadian Journal of Animal Science 80, no. 4 (2000): 663–71. http://dx.doi.org/10.4141/a99-114.

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Seasonal energetic parameters of yearling bison were estimated using the bite-count and single marker methods (fieldtrials) during each solstice and equinox between June 1994 and December 1995. To calibrate the marker method and to provide a controlled estimate of seasonal requirements, balance trials were conducted in metabolism crates during winter solstice 1994 and summer solstice 1995 (pen trials). In pen trials, actual metabolizable energy (ME) intake was lower (P < 0.01) during winter (528 ± 51 kJ W−0.75 d−1) than in summer (917 ± 69 kJ W−0.75 d−1). Similarly, in field trials, estimat

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4

Groebner, R. J., and T. N. Carlstrom. "Critical edge parameters for H-mode transition in DIII-D." Plasma Physics and Controlled Fusion 40, no. 5 (1998): 673–77. http://dx.doi.org/10.1088/0741-3335/40/5/021.

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5

Bagdy, Dániel, Éva Barabás, Gabriella Szabó, Sándor Bajusz, and Erzsébet Széll. "In Vivo Anticoagulant and Antiplatelet Effect of D-Phe-Pro-Arg-H and D-MePhe-Pro-Arg-H." Thrombosis and Haemostasis 67, no. 03 (1992): 357–65. http://dx.doi.org/10.1055/s-0038-1648447.

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SummaryD-Phe-Pro-Arg-H and D-MePhe-Pro-Arg-H synthetized in our institute were administered to mice, rats, rabbits and beagle dogs. The kinetics of the anticoagulant and antiplatelet effect was recorded by measuring various clotting parameters, platelet count and aggregation, and evaluated as proposed by Verstraete and Verwilghen. The minimum effective doses were found to be 0.25-0.5 mg kg-1h-1 by intravenous continuous infusions and 0.5-1.0 mg/kg by single injections. The dose-dependent prolongation of clotting times appeared after application within minutes and returned to baseline values as

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6

Chen, Hongtang, Haijun Ma, Hongli Jiang, Shenjin Lv, Yong Li, and Heshan Liu. "Kinematic Modeling of 3P2R Welding Robot Based on D-H Parameters." Journal of Physics: Conference Series 2218, no. 1 (2022): 012085. http://dx.doi.org/10.1088/1742-6596/2218/1/012085.

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Abstract To meet the demand of different vehicle models welding task, as well as lower the cost of specialized welding facility, a kind of 3P2R arc welding robot has been developed and SolidWorks is used to set up the Three Dimensional (3D) solid model. The developed robot includes 3P2R body, controller, and a welding power supply. The direct kinematical model and inverse solution have been worked out basing on Denavit-Hartenberg (D-H) method, and the direct kinematical model and inverse solution are verified by experiment. This robot could also be used to burring or spray field with the actua

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7

Wu, Liao, Ross Crawford, and Jonathan Roberts. "An Analytic Approach to Converting POE Parameters Into D–H Parameters for Serial-Link Robots." IEEE Robotics and Automation Letters 2, no. 4 (2017): 2174–79. http://dx.doi.org/10.1109/lra.2017.2723470.

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8

Snider, Miriam A., Jacqueline M. Johnson, Sara E. Ziegler, Heather M. Darby, and Sabrina L. Greenwood. "180 Effects of Forage Mixtures on Rumen Fermentation Parameters as Assessed by Continuous Culture." Journal of Animal Science 99, Supplement_3 (2021): 97. http://dx.doi.org/10.1093/jas/skab235.174.

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Abstract The impact of using diverse forage mixtures on rumen performance is poorly characterized. The objective of this study was to evaluate the impact of feeding diverse pastures on rumen performance using in vitro continuous culture fermenters. Treatments were assessed using a 4 x 4 Latin square design. Each 10-d period included 7-d of adaption followed by 3-d of sample collection. Dietary treatments (DM basis) included 1) 50% orchardgrass + 50% alfalfa (OG-ALF); 2) 50% OG-ALF + 50% red clover (RC); 3) 50% OG-ALF + 50% pearl millet (MIL); and 4) 50% OG-ALF + 50% sorghum x sudangrass (SUD).

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9

Li, Guangshuo, Chuanying Wang, Shang Wang, Yahui Hao, Yunyun Xiong, and Xingquan Zhao. "Clinical Significance and Dynamic Change of Coagulation Parameters in Ischemic Stroke Patients Treated with Intravenous Thrombolysis." Clinical and Applied Thrombosis/Hemostasis 28 (January 2022): 107602962211212. http://dx.doi.org/10.1177/10760296221121287.

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Objective Investigations on coagulation parameters including fibrinogen (Fbg), fibrinogen degradation products (FDP), and D-dimer in ischemic stroke patients treated with intravenous thrombolysis are insufficient. We aimed to investigate the association between in-hospital clinical outcomes and the coagulation parameters at different time points in ischemic stroke patients treated with intravenous tissues plasminogen activator (IV tPA). Methods We retrospectively enrolled patients who received IV tPA therapy within 4.5 h from symptoms onset. Demographics, clinical characteristics, imaging meas

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10

Hamiruddin, Nur Ain, and Nik Azimatolakma Awang. "The Relationship Between the Biokinetic Parameters of an Aerobic Granular Sludge System and the Applied Operating Conditions." Civil and Environmental Engineering Reports 31, no. 1 (2021): 161–71. http://dx.doi.org/10.2478/ceer-2021-0011.

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Abstract Biokinetic parameters help to describe the rate of substrate utilization and biomass production or growth by microbial action, which is important to the design process and performance optimization of wastewater treatment. Although studies of the biokinetic parameters of aerobic granular sludge (AGS) systems have been increasing lately, the significance for each value in terms of maximum specific growth rate (μmax), substrate concentration at one-half of the maximum specific growth rate (KS), and cell yield (Y) in relation to the applied operating conditions are rarely discussed. There

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11

Zhao, Hao, Renbo Xia, Yueling Chen, Liming Tao, Daixian Zhao, and Tianyu Zhang. "A Fast Conversion Method of Tube Coordinates." Highlights in Science, Engineering and Technology 15 (November 26, 2022): 16–21. http://dx.doi.org/10.54097/hset.v15i.2197.

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Inspired by the idea of the coordinate transformation of the robot arm, the tube structure is analogized to the robot arm structure, and the conversion method of the tube bend processing parameters LRA to the three-dimensional coordinate points is obtained. The method first regards the tube as a “mechanical arm”; then, using the similarity of the LRA processing parameters and D-H parameters, all the LRA parameters are converted into D-H parameters; finally, the D-H parameter method is applied to calculate the distance between each axis of the " mechanical arm ". If the first space coordinate p

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12

Szymon, Bijak, and Orzoł Katarzyna. "Slenderness of trees in black locust stands." Lesne Prace Badawcze / Forest Research Papers 79, no. 2 (2017): 113–17. https://doi.org/10.2478/frp-2018-0012.

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This paper investigates the slenderness of black locust (Robinia pseudoacacia) trees in relation to the biosocial status of the trees, stand age class, crown parameters and habitat type. The research material was collected on 35 research plots in the Sława Śląska, Sulechów and Głogów forest districts in western Poland and comprises 1058 trees. For each tree, we measured height (h) as well as diameter at breast height (d) and determined its biosocial status (Kraft class), crown length (CL) and relative crown length (rCL). The age class and habitat type were assessed at the plot le

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13

Catalá-Gregori, Pablo, Victoria García, Josefa Madrid, Juan Orengo, and Fuensanta Hernández. "Response of broilers to feeding low-calcium and total phosphorus wheat-soybean based diets plus phytase: Performance, digestibility, mineral retention and tibiotarsus mineralization." Canadian Journal of Animal Science 87, no. 4 (2007): 563–69. http://dx.doi.org/10.4141/cjas07059.

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A 42-d trial was conducted with broilers fed a wheat-soy bean-meal-based diet to compare three dietary levels of calcium (Ca) and total phosphorus (TP) plus phytase on growth performance parameters, nutrient digestibility, mineral retention and tibiotarsus bone parameters. Three treatments were compared: a high Ca and TP diet (H−; according to NRC recommendations) without addition of phytase; a moderate Ca and TP diet (M+) with 600 U kg-1 of phytase; and a low Ca and TP diet (L+; similar to local industry practices) with 600 U kg-1 of phytase supplementation. Feed intake and weight gain of bro

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14

Tzeng, Sheng Chung. "Convective Heat Transfer in a Rectangular Channel Filled With Sintered Bronze Beads and Periodically Spaced Heated Blocks." Journal of Heat Transfer 128, no. 5 (2005): 453–64. http://dx.doi.org/10.1115/1.2175151.

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This work numerically investigated the steady state fluid flow and heat transfer behaviors associated with a sintered porous channel that contains periodically spaced heated blocks. Some typical cases are experimentally examined in this study. The relevant varied parameters were the average bead diameter (d), the relative block height (h∕H), the relative block width (w∕H), the relative block spacing (s∕H), and the Reynolds number (Re). The numerical results revealed a lack of global recirculation in regions between the blocks, where the forced convective heat transfer was low, but the heat in

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15

Berezhnoy, Yu A., and V. A. Slipko. "Polarization Phenomena in Inclusive Nucleon Transfer Reactions." International Journal of Modern Physics E 07, no. 06 (1998): 723–46. http://dx.doi.org/10.1142/s0218301398000415.

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The theory of the polarization phenomena in the inclusive one- and two-nucleon transfer reactions (d,n) and (3 H ,n) at intermediate energies is developed on the basis of the S-matrix approach. Since the parameters of the S-matrix are found from fitting the experimental data for the elastic scattering of protons by the nuclei, the calculated polarization observables of the neutrons released in reactions 40 Ca (d,n), 208 Pb (d,n), 40 Ca (3 H ,n) and 208 Pb (3 H ,n) in the wide energy region do not have any free parameters.

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16

Farah, Edris, and Shao Gang Liu. "D-H Parameters and Forward Kinematics Solution for 6D of Surgical Robot." Applied Mechanics and Materials 415 (September 2013): 18–22. http://dx.doi.org/10.4028/www.scientific.net/amm.415.18.

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Since 1985 when the first appear of robots in surgery field, the interest and the amount of research in surgical robots have been increase significantly. We study in this paper the kinematics of a 6dof surgical robot by determining Denavit-Hartenberg parameters using simple approach supported by robotic toolbox. We describe in details the forward kinematics using the D-H parameters, the successful build of the robot was verified by plotting 3D model for the robot in two positions.

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17

Wang, SF, JH Zhang, ZG Liu, et al. "Riveting parameter design that satisfies requirements for driven rivet head dimensions." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 13 (2014): 2412–32. http://dx.doi.org/10.1177/0954406214559256.

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Riveted joints are extensively adopted in designing aircraft structures. Riveting implies a squeezing process of the rivet with large plastic deformations to form the driven rivet head. The driven rivet head dimensions (height H, diameter D) depend on riveting force ( X1), rivet length and diameter tolerance ( X2 and X3), as well as rivet hole tolerance ( X4). Incorrect selection in these parameters could induce the excessive stress concentration that results in initial crack and also results in improper rivet head deformation leading to loose rivet. The present research is conducted on a MS20

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18

Zuhair, Suwoto, Topan Setiadipura, and Zaki Su'ud. "STUDY ON MCNP6 MODEL IN THE CALCULATION OF KINETIC PARAMETERS FOR PEBBLE BED REACTOR." Acta Polytechnica 60, no. 2 (2020): 175–84. http://dx.doi.org/10.14311/ap.2020.60.0175.

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When conducting a nuclear reactor transient analysis, the most important parameter, called the kinetic parameter, is required. The calculation of kinetic parameters can be conducted using several methods. The deterministic method is one possible method that relies on the forward and adjoint neutron fluxes to provide the kinetic parameters calculation based on the perturbation theory. In this study, the Monte Carlo transport code MCNP6 was utilized to perform the exact prediction of the kinetic parameters of a pebble bed reactor. The core was modelled with a different fuel composition of uraniu

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19

Niemann, Niclas, Patrick Wiegel, Alexander Kurz, John C. Rothwell, and Christian Leukel. "Assessing TMS-induced D and I waves with spinal H-reflexes." Journal of Neurophysiology 119, no. 3 (2018): 933–43. http://dx.doi.org/10.1152/jn.00671.2017.

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Transcranial magnetic stimulation (TMS) of motor cortex produces a series of descending volleys known as D (direct) and I (indirect) waves. In the present study, we questioned whether spinal H-reflexes can be used to dissect D waves and early and late I waves from TMS. We therefore probed H-reflex facilitation at arrival times of D and I waves at the spinal level and thereby changed TMS parameters that have previously been shown to have selective effects on evoked D and different I waves. We changed TMS intensity and current direction and applied a double-pulse paradigm known as short-interval

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20

Malaescu, Iosif, Catalin N. Marin, and Paul C. Fannin. "Experimental Investigations on the Ferromagnetic Resonance and Absorbing Properties of a Ferrofluid in the Microwave Range." Magnetochemistry 10, no. 2 (2024): 7. http://dx.doi.org/10.3390/magnetochemistry10020007.

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Measurements of complex magnetic permeability, μ(f,H) = μ′(f,H) − iμ″(f,H) and dielectric permittivity ε(f,H) = ε′(f,H) − iε″(f,H), in the frequency range, f of (0.4–7) GHz, and polarizing field, H of (0–135) kA/m, were performed, for a kerosene-based ferrofluid with magnetite nanoparticles. Based on these measurements, the phenomenon of ferromagnetic resonance was highlighted and some microwave propagation parameters of the ferrofluid were determined: the attenuation constant, α(f,H), and the reflection coefficient, R(f,H), at the air-material interface, at the normal incidence. Knowing these

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21

Jerro, H. D., S. S. Pang, C. Yang, and R. A. Mirshams. "Kinematics Analysis of the Chipping Process Using the Circular Diamond Saw Blade." Journal of Manufacturing Science and Engineering 121, no. 2 (1999): 257–64. http://dx.doi.org/10.1115/1.2831214.

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One of the primary goals in the design of a diamond blade cutting system is to reduce the cutting force. By understanding the fundamentals of the kinematics of the sawing operation, these forces can be lowered and even optimized with respect to the machining parameters. In this work the material chipping geometries have been mathematically defined and derived through kinematic analysis. These geometries are bounded by four curves and depend on the parameters: depth of cut h, blade diameter D, transverse rate of the workpiece νT, peripheral speed of the saw blade νP, and grit spacing λ. From th

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22

Almeida, Marina de Paula, Marcelo de Andrade Ferreira, João Paulo Ismério Monnerat dos Santos, et al. "PSX-13 Effects of supplementing sugar-based byproducts on ingestive behavior and ruminal fermentation parameters in small ruminants." Journal of Animal Science 98, Supplement_4 (2020): 458–59. http://dx.doi.org/10.1093/jas/skaa278.799.

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Abstract A duplicated 4 × 4 Latin square design evaluated the effects of replacing ground corn grain (GCG) by sugar-based byproducts plus corn gluten feed (SBB-CGF) on ingestive behavior and ruminal fermentation parameters in small ruminants. Four ruminally cannulated wether sheep and four wether goats (72 and 65 ± 2.3 kg BW, respectively) were individually allocated to 8 pens, over 4 periods of 19-d each (12 d adaptation plus 7 d of sample collection) to receive a diet containing 50% roughage (bermudagrass hay; Cynodon sp.) and 50% concentrate (80% GCG, 16% soybean meal, and 4% premix) with 4

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23

Hmamou, M., and A. Laghzal. "Determination of Surface Parameters of Iron(III) Hydroxide Sorbent." Asian Journal of Chemistry 36, no. 12 (2024): 2760–64. https://doi.org/10.14233/ajchem.2024.32465.

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The surface layer parameters of iron(III) hydroxide were studied. The surface charge, the sorption of proton H+, hydroxyl OH– as a function of hydration time (TCT), the pH of the suspension solution and the sorbent concentration were presented. For this purpose, two methods were chosen: potentiometric mass titration (PMT) and potentiometric time titration (PTT). The concentrations suspensions used were 20, 40 and 60 g/L. The variations of surface charge with the time contact, Q = f(TCT) were examined for hydration time ranging from zero to 72 h. The isoelectric point (IEP) and point zero charg

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24

Saeedy, Hamed S. "Stability of circular vertical earth anchors." Canadian Geotechnical Journal 24, no. 3 (1987): 452–56. http://dx.doi.org/10.1139/t87-056.

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This study aims to provide an extensive analytical approach for determining the uplift capacity of circular vertical earth anchors and to investigate the soil–anchor interaction. The solution is simplified by utilizing proper dimensionless parameters, in which controlling dimensionless factors [Formula: see text] are produced for a range of values of H/D and angle of internal friction. The factor [Formula: see text] is a pressure ratio representing gravitational and shear strength of the soil, and H/D signifies relative depth, which pertains to anchor geometry. The functional relationship of t

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25

Sağlam, Fadime, and Oytun Emre Sakici. "Height-Diameter Relationships for Pinus brutia Ten. in the Adana-Karaisali Region of Türkiye." Dendrobiology 93 (July 4, 2025): 121–31. https://doi.org/10.12657/denbio.093.009.

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In this study, it was aimed to develop height (H)-diameter (D) models for pure Pinus brutia Ten. stands distributed in the Adana-Karaisalı region in Türkiye. Diameter at breast height and tree height data were obtained from 1081 sample trees in 82 sample plots. Additionally, measurements were made regarding various stand variables. Based on the data obtained, parameters were estimated for four base H-D models, which provide estimates based only on diameter at breast height, and five generalized H-D models, which incorporate stand variables in addition to diameter at breast height. According to

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26

Schneider, P. A., C. Angioni, L. Frassinetti, et al. "The dependence of confinement on the isotope mass in the core and the edge of AUG and JET-ILW H-mode plasmas." Nuclear Fusion 62, no. 2 (2021): 026014. http://dx.doi.org/10.1088/1741-4326/ac3e82.

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Abstract Experiments in ASDEX Upgrade (AUG) and JET with the ITER-like wall (JET-ILW) are performed to separate the pedestal and core contributions to confinement in H-modes with different main ion masses. A strong isotope mass dependence in the pedestal is found which is enhanced at high gas puffing. This is because the ELM type changes when going from D to H for matched engineering parameters, which is likely due to differences in the inter ELM transport with isotope mass. The pedestal can be matched in H and D plasmas by varying only the triangularity and keeping the engineering parameters

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27

Yao, Suya, Zishi Jiang, and Sabyasachi Kar. "Resonance States of Negative Hydrogen-like Ions in Quantum Plasmas." Atoms 11, no. 4 (2023): 69. http://dx.doi.org/10.3390/atoms11040069.

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We studied the 1Se and 1,3Po resonance states of negative hydrogen-like ions immersed in quantum plasmas. The exponential cosine screened Coulomb potential was considered to model the quantum plasma environment. The correlated exponential wave functions in which the exponents were generated by a pseudo-random technique were applied to represent the correlation effects between the charged particles. The stabilization method was used to calculate the resonance parameters (position and width). The resonance parameters (position and width) for Ps−, Mμ−, π−, 1H−, D−, T− and ∞H− embedded in quantum

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28

Kaya, D., B. Emre, H. Bollwein, et al. "Evaluation of endometrial echotexture and cervical cytology in cows during and after treatment of endometritis." Tierärztliche Praxis Ausgabe G: Großtiere / Nutztiere 42, no. 06 (2014): 343–50. http://dx.doi.org/10.15653/tpg-140473.

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Summary Objective: The aim of this study was to evaluate changes in the endometrium by using echotexture parameters during and after treatment of endometritis with intrauterine administration of an intra ute rine antiseptic solution (Lotagen®, 3% metacresolsulphonic acid and formaldehyde) in cows which became pregnant after treatment. Material and methods: According to the severity of endometritis 21 cows were divided into three groups: E1 (slight, n = 7), E2 (moderate, n = 8), E3 (severe, n = 6). The control group (C, n = 11) consisted of cows without endometritis that did not receive an intr

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Hodges, R. Richard. "Collision cross sections and diffusion parameters for H and D in atomic oxygen." Journal of Geophysical Research: Space Physics 98, A3 (1993): 3799–805. http://dx.doi.org/10.1029/92ja02606.

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Bi, Z. M., W. J. Zhang, I. M. Chen, and S. Y. T. Lang. "Automated geneartion of the D–H parameters for configuration design of modular manipulators." Robotics and Computer-Integrated Manufacturing 23, no. 5 (2007): 553–62. http://dx.doi.org/10.1016/j.rcim.2006.02.014.

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Valovic, M., P. G. Carolan, A. R. Field, et al. "Inboard gas puffing and behaviour of H-mode edge parameters in COMPASS-D." Plasma Physics and Controlled Fusion 44, no. 5A (2002): A175—A181. http://dx.doi.org/10.1088/0741-3335/44/5a/314.

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Asadov, A. K., E. N. Malyshev, A. N. Ul’yanov, and Yu E. Kuzovlev. "Effect of strong magnetic fields on the lattice parameters of YBaCuO ceramics." Low Temperature Physics 22, no. 5 (1996): 445–46. https://doi.org/10.1063/10.0034013.

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The effect of a magnetic field (up to 5.4 T) on the lattice parameters of YBaCuO ceramics is investigated in the temperature range 600–700° C. The obtained results are explained by magnetic blocking of weakly bound oxygen, The ratio D(O)/D(H) of the oxygen diffusion coefficients varies in experiments from 1.03 to 1.28.

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Yang, Jing, Lingtao Yu, Lan Wang, Wenjie Wang, and Jianwei Cui. "The estimation method of friction in unconfined compression tests of liver tissue." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 232, no. 6 (2018): 573–87. http://dx.doi.org/10.1177/0954411918774377.

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In traditional unconfined compression tests, the friction between platform and specimen is often considered negligible or minimized by lubrication or other means. However, friction can affect the estimation of material parameters. The percentage difference in radial deformation was investigated in this study. A novel friction estimation method was established and verified using a finite element method. The proposed method was based on the radial deformation during the compression process. Three different hyperelastic material parameters of liver tissue were applied in the simulations. The hype

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Alshahrani, Saeed, Saied M. Soliman, Abdullah Saleh Alamary, et al. "Synthesis of Enaminones-Based Benzo[d]imidazole Scaffold: Characterization and Molecular Insight Structure." Crystals 10, no. 10 (2020): 955. http://dx.doi.org/10.3390/cryst10100955.

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(E)-1-(1H-Benzo[d]imidazol-2-yl)-3-(dimethylamino)prop-2-en-1-one 2 was synthesized by one-pot synthesis protocol of 2-acetyl benzo[d]imidazole with dimethylformamide dimethylacetal (DMF-DMA) in xylene at 140 °C for 8 h. Reaction of enaminone derivative 1 with acetylacetone in the presence of AcOH/NH4OAc under reflux afforded the cyclized pyridino-benzo[d]imidazole derivative 3. The latter compound was converted into the corresponding β-enaminone 4 with DMF-DMA. The single crystal X-ray diffraction technique eventually confirmed the assigned chemical structure of the N-alkyl-β-enaminone 2 and

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Contreras Raggio, José I., Carlos Toro Arancibia, Carola Millán, Heidi-Lynn Ploeg, Ameet Aiyangar, and Juan F. Vivanco. "Height-to-Diameter Ratio and Porosity Strongly Influence Bulk Compressive Mechanical Properties of 3D-Printed Polymer Scaffolds." Polymers 14, no. 22 (2022): 5017. http://dx.doi.org/10.3390/polym14225017.

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Although the architectural design parameters of 3D-printed polymer-based scaffolds—porosity, height-to-diameter (H/D) ratio and pore size—are significant determinants of their mechanical integrity, their impact has not been explicitly discussed when reporting bulk mechanical properties. Controlled architectures were designed by systematically varying porosity (30–75%, H/D ratio (0.5–2.0) and pore size (0.25–1.0 mm) and fabricated using fused filament fabrication technique. The influence of the three parameters on compressive mechanical properties—apparent elastic modulus Eapp, bulk yield stres

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Chen, Kai, Kai Zhan, Xiaocong Yang, and Da Zhang. "Accuracy Improvement Method of a 3D Laser Scanner Based on the D-H Model." Shock and Vibration 2021 (May 25, 2021): 1–9. http://dx.doi.org/10.1155/2021/9965904.

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A three-dimensional (3D) laser scanner with characteristics such as acquiring huge point cloud data and noncontact measurement has revolutionized the surveying and mapping industry. Nonetheless, how to guarantee the 3D laser scanner precision remains the critical factor that determines the excellence of 3D laser scanners. Hence, this study proposes a 3D laser scanner error analysis and calibration-method-based D-H model, applies the D-H model method in the robot area to the 3D laser scanner coordinate for calculating the point cloud data and creatively derive the error model, comprehensively a

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Li, Shengfeng, and Yi Dong. "Parametric Estimation in the Vasicek-Type Model Driven by Sub-Fractional Brownian Motion." Algorithms 11, no. 12 (2018): 197. http://dx.doi.org/10.3390/a11120197.

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In the paper, we tackle the least squares estimators of the Vasicek-type model driven by sub-fractional Brownian motion: d X t = ( μ + θ X t ) d t + d S t H , t ≥ 0 with X 0 = 0 , where S H is a sub-fractional Brownian motion whose Hurst index H is greater than 1 2 , and μ ∈ R , θ ∈ R + are two unknown parameters. Based on the so-called continuous observations, we suggest the least square estimators of μ and θ and discuss the consistency and asymptotic distributions of the two estimators.

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Song, Bo, Bin Shen, Xue Lin Lei, Lei Cheng, and Fang Hong Sun. "Simulation of Temperature Distribution in HFCVD Diamond Films Growth on the Multitudinous Micro End Mills." Advanced Materials Research 1027 (October 2014): 163–66. http://dx.doi.org/10.4028/www.scientific.net/amr.1027.163.

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In the process of HFCVD diamond film growth on the multitudinous micro end mills, the uniformity and stability of the temperature distribution have a vital importance on the quality of film. So a new method by using the finite volume is proposed to analyze the importance of different disposition parameters on the uniformity of substrate temperature field. These parameters are filament diameter (d), filament-substrate distance (H), filament separation (S) and filament length (L). The mono-factor method are used to optimize the best parameter combination. The simulation results show that the opt

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Goel, Danny P., Alba Vecchini, Vincenzo Panagia, and Grant N. Pierce. "Altered cardiac Na+/H+ exchange in phospholipase D-treated sarcolemmal vesicles." American Journal of Physiology-Heart and Circulatory Physiology 279, no. 3 (2000): H1179—H1184. http://dx.doi.org/10.1152/ajpheart.2000.279.3.h1179.

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Cardiac sarcolemmal Na+/H+ exchange is critical for the regulation of intracellular pH, and its activity contributes to ischemia-reperfusion injury. It has been suggested that the membrane phospholipid environment does not modulate Na+/H+ exchange. The present study was carried out to determine the effects on Na+/H+ exchange of modifying the endogenous membrane phospholipids through the addition of exogenous phospholipase D. Incubation of 0.825 U of phospholipase D with 1 mg of porcine cardiac sarcolemmal vesicles hydrolyzed 34 ± 2% of the sarcolemmal phosphatidylcholine and increased phosphat

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Ikeda, Akihiro, Teiji Uozumi, Akimasa Yoshikawa, Akiko Fujimoto, and Shuji Abe. "Schumann resonance parameters at Kuju station during solar flares." E3S Web of Conferences 62 (2018): 01012. http://dx.doi.org/10.1051/e3sconf/20186201012.

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We examined the Schumann resonance (SR) at low-latitude station KUJ by comparing with solar X-ray flux and solar proton flux at a geostationary orbit. For intense solar activity in October-November 2003, the reaction of the SR frequency to X-ray enhancement and SPEs was different. The SR frequency in H component increased at the time of the Xray enhancement. The response of SR seems to be caused by the increase of the electron density in the ionospheric D region which ionized by the enhanced solar X-ray flux. In the case of the SPEs, the SR frequency in D component decreased with enhancement o

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Mehtätalo, Lauri. "A longitudinal height–diameter model for Norway spruce in Finland." Canadian Journal of Forest Research 34, no. 1 (2004): 131–40. http://dx.doi.org/10.1139/x03-207.

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A height–diameter (HD) model for Norway spruce (Picea abies (L.) Karst.) was estimated from longitudinal data. The Korf growth curve was used as the HD curve. Firstly, HD curves for each stand at each measurement time were fitted, and the trends in the parameters of the HD curve were modeled. Secondly, the trends were included in the HD model to estimate the whole model at once. To take the hierarchy of the data into account, a mixed-model approach was used. This makes it possible to calibrate the model for a new stand at a given point in time using sample tree height(s). The heights may

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Rao, K. Ravindra, J. Vijaya Ratna, and T. Manikya Rao. "Comparative Bioavailability of Four Marketed Sparfloxacin Formulations in Healthy Human Volunteers." E-Journal of Chemistry 1, no. 1 (2004): 43–50. http://dx.doi.org/10.1155/2004/879208.

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The objective of the study was to obtain the pharmacokinetic data of four marketed tablet formulations of sparfloxacin and compare the relative bioavailability of the formulations with standard formulation. A single dose 4×4 latin square design of the four marketed tablet formulations of sparfloxacin (200 mg) was carried out in four healthy male volunteers. Blood samples were collected at predetermined time intervals. The serum concentrations of the drug were determined by microbiological assay. The pharmacokinetic parameters were calculated from the plasma concentration of sparfloxacinversust

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Sahib, Jumana Hadi, Luay Kadhim Al-Waeli, and Ali Hussein Jaber Al Rammahi. "Utilization of ANN technique to estimate the discharge coefficient for trapezoidal weir-gate." Open Engineering 12, no. 1 (2022): 142–50. http://dx.doi.org/10.1515/eng-2022-0030.

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Abstract Developing and assessing the performance of water projects and irrigation networks is based on many factors, such as flow measurement. Weir and gate structures have been extensively utilized for flow measurement and to get rid of sediments. The process of modeling and estimating the coefficient of discharge in the weir is an essential part of hydraulic engineering. Recently the application of computer skills was adopted instead of traditional methods. In the present study, the artificial neural network (ANN) was adopted to estimate the coefficient of discharge for a combined weir that

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Joe, Athbel, and S. Krishna. "An Underfrequency Load Shedding Scheme with Minimal Knowledge of System Parameters." International Journal of Emerging Electric Power Systems 16, no. 1 (2015): 33–46. http://dx.doi.org/10.1515/ijeeps-2014-0108.

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Abstract Underfrequency load shedding (UFLS) is a common practice to protect a power system during large generation deficit. The adaptive UFLS schemes proposed in the literature have the drawbacks such as requirement of transmission of local frequency measurements to a central location and knowledge of system parameters, such as inertia constant H and load damping constant D. In this paper, a UFLS scheme that uses only the local frequency measurements is proposed. The proposed method does not require prior knowledge of H and D. The scheme is developed for power systems with and without spinnin

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Chen, Julian C. H., Zoë Fisher, Andrey Y. Kovalevsky, et al. "Room-temperature ultrahigh-resolution time-of-flight neutron and X-ray diffraction studies of H/D-exchanged crambin." Acta Crystallographica Section F Structural Biology and Crystallization Communications 68, no. 2 (2012): 119–23. http://dx.doi.org/10.1107/s1744309111051499.

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The room-temperature (RT) X-ray structure of H/D-exchanged crambin is reported at 0.85 Å resolution. As one of the very few proteins refined with anisotropic atomic displacement parameters at two temperatures, the dynamics of atoms in the RT and 100 K structures are compared. Neutron diffraction data from an H/D-exchanged crambin crystal collected at the Protein Crystallography Station (PCS) showed diffraction beyond 1.1 Å resolution. This is the highest resolution neutron diffraction reported to date for a protein crystal and will reveal important details of the anisotropic motions of H and D

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Nazarov, S., and J. Taskinen. "Asymptotics of the spectrum of the mixed boundary value problem for the Laplace operator in a thin spindle-shaped domain." St. Petersburg Mathematical Journal 33, no. 2 (2022): 283–325. http://dx.doi.org/10.1090/spmj/1701.

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The asymptotics is examined for solutions to the spectral problem for the Laplace operator in a d d -dimensional thin, of diameter O ( h ) O(h) , spindle-shaped domain Ω h \Omega ^h with the Dirichlet condition on small, of size h ≪ 1 h\ll 1 , terminal zones Γ ± h \Gamma ^h_\pm and the Neumann condition on the remaining part of the boundary ∂ Ω h \partial \Omega ^h . In the limit as h → + 0 h\rightarrow +0 , an ordinary differential equation on the axis ( − 1 , 1 ) ∋ z (-1,1)\ni z of the spindle arises with a coefficient degenerating at the points z = ± 1 z=\pm 1 and moreover, without any boun

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Lin, Jieye, Allen G. Oliver, and Anthony S. Serianni. "D-Mannosamine hydrochloride (2-amino-2-deoxy-D-mannose hydrochloride): ionic hydrogen bonding in saccharides involving chloride and aminium ions." Acta Crystallographica Section C Structural Chemistry 78, no. 4 (2022): 223–30. http://dx.doi.org/10.1107/s2053229622002121.

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D-Mannosamine hydrochloride (2-amino-2-deoxy-D-mannose hydrochloride), C6H14NO5 +·Cl−, (I), crystallized from a methanol/ethyl acetate/n-hexane solvent mixture at room temperature in a 4 C 1 chair conformation that is slightly distorted towards the C3,O5 B form. A comparison of the structural parameters of (I) with the corresponding parameters in α-D-glucosamine hydrochloride, (II), and β-D-galactosamine hydrochloride, (III)/(III′), was undertaken to evaluate the effects of ionic hydrogen bonding on structural properties. Three types of ionic hydrogen bonds are present in the crystals of (I)–(

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Chen, Ze, Yufang Tian, Yinan Wang, et al. "Turbulence parameters measured by the Beijing mesosphere–stratosphere–troposphere radar in the troposphere and lower stratosphere with three models: comparison and analyses." Atmospheric Measurement Techniques 15, no. 16 (2022): 4785–800. http://dx.doi.org/10.5194/amt-15-4785-2022.

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Abstract. Based on the quality-controlled observational spectral width data of the Beijing mesosphere–stratosphere–troposphere (MST) radar in the altitudinal range of 3–19.8 km from 2012 to 2014, this paper analyses the relationship between the proportion of negative turbulent kinetic energy (N-TKE) and the horizontal wind speed and the vertical shear of horizontal wind domain and gives the distributional characteristics of atmospheric turbulence parameters obtained by using different calculation models. Three calculation models of the spectral width method were used in this study – namely the

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Singh, Satwinder, and Ekta Singla. "Modelling and simulation of basic robotic configurations using D–H parameters based adaptive modules." Perspectives in Science 8 (September 2016): 513–15. http://dx.doi.org/10.1016/j.pisc.2016.06.006.

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Hatae, T., T. H. Osborne, Y. Kamada, et al. "Comparison of edge pedestal parameters for JT-60U and DIII-D H-mode plasmas." Plasma Physics and Controlled Fusion 42, no. 5A (2000): A283—A288. http://dx.doi.org/10.1088/0741-3335/42/5a/334.

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