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Journal articles on the topic 'Highly concave'

Author: Grafiati

Published: 17 May 2025

Last updated: 31 July 2025

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1

Cao, Zhiyuan, Bo Liu, Ting Zhang, Yibing Xu, and Hang Zhao. "Non-axisymmetric endwall profiling in a highly loaded compressor cascade." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 233, no. 3 (2018): 275–92. http://dx.doi.org/10.1177/0957650918786148.

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Very few studies of non-axisymmetric endwall profiling in compressor have been conducted in published literatures. This study investigates the control mechanism of non-axisymmetric endwall on the flow field of a highly loaded compressor cascade and the guidelines for the design of non-axisymmetric endwall. First, CFD method was validated with existing experimental data. Then, the design method of non-axisymmetric endwall based on trigonometric function and Bezier curve was introduced. The design strategies of non-axisymmetric endwall considering axial position effect, height effect and differe

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2

Liu, Huan, Yaru Zhang, Jinyang Dong, et al. "Curving effects of concave dodecahedral nanocarbons enable enhanced Li-ion storage." Journal of Materials Chemistry A 6, no. 30 (2018): 14894–902. http://dx.doi.org/10.1039/c8ta04934c.

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3

Handelman, David. "Arguments of zeros of highly log concave polynomials." Rocky Mountain Journal of Mathematics 43, no. 1 (2013): 149–77. http://dx.doi.org/10.1216/rmj-2013-43-1-149.

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4

Ramakrishnan, Venkatesh, and Karunakaran Kulandaivelu. "Kinetic investigation of oxidation of aromatic anils by magnesium monoperoxyphthalate in aqueous acidic medium." Polish Journal of Chemical Technology 15, no. 3 (2013): 55–60. http://dx.doi.org/10.2478/pjct-2013-0044.

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Abstract The kinetics of oxidation of aromatic anils to benzaldehyde and azobenzene by magnesium monoperoxyphthalate (MMPP) has been studied in aqueous acetic acid medium. The low dielectric constant of the medium facilitates the reactivity. It has been found that ionic strength of the reaction has no significant effect on rate. The added acrylonitrile has no effect on the reaction rate indicating the absence of free radical mechanism. The added Mn(II) decreases the rate of the reaction, which indicates the involvement of two-electron transfer. Highly negative ΔS# values indicate a structured

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Huang, Youju, Palanisamy Kannan, Lei Zhang, Tao Chen, and Dong-Hwan Kim. "Concave gold nanoparticle-based highly sensitive electrochemical IgG immunobiosensor for the detection of antibody–antigen interactions." RSC Advances 5, no. 72 (2015): 58478–84. http://dx.doi.org/10.1039/c5ra10990f.

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6

Li, Ming, Le Chen, Chao Zhou, Chengchao Jin, Yanjie Su, and Yafei Zhang. "3D highly efficient photonic micro concave-pit arrays for enhanced solar water splitting." Nanoscale 11, no. 39 (2019): 18071–80. http://dx.doi.org/10.1039/c9nr05778a.

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3D micro concave-pit arrays, for the first time, are designed as effective photonic substrates for remarkably enhanced photoelectrochemical water splitting using In<sub>2</sub>S<sub>3</sub>/ZnO heterojunction nanosheet arrays as photochemical catalysts.

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7

Hu, Jianqiang, Huichao He, Liang Li, et al. "Highly symmetrical, 24-faceted, concave BiVO4 polyhedron bounded by multiple high-index facets for prominent photocatalytic O2 evolution under visible light." Chemical Communications 55, no. 33 (2019): 4777–80. http://dx.doi.org/10.1039/c9cc01366k.

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A highly symmetrical, 24-faceted, concave BiVO<sub>4</sub> polyhedron bounded by multiple high-index facets was designed to exhibit prominent photocatalytic O<sub>2</sub> evolution under visible light.

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8

Pathak, Amit, Vikram S. Deshpande, Robert M. McMeeking, and Anthony G. Evans. "The simulation of stress fibre and focal adhesion development in cells on patterned substrates." Journal of The Royal Society Interface 5, no. 22 (2007): 507–24. http://dx.doi.org/10.1098/rsif.2007.1182.

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The remodelling of the cytoskeleton and focal adhesion (FA) distributions for cells on substrates with micro-patterned ligand patches is investigated using a bio-chemo-mechanical model. We investigate the effect of ligand pattern shape on the cytoskeletal arrangements and FA distributions for cells having approximately the same area. The cytoskeleton model accounts for the dynamic rearrangement of the actin/myosin stress fibres. It entails the highly nonlinear interactions between signalling, the kinetics of tension-dependent stress-fibre formation/dissolution and stress-dependent contractilit

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9

Allende-Seco, Rodrigo, Alfredo Artigas, Héctor Bruna, Linton Carvajal, Alberto Monsalve, and María Florencia Sklate-Boja. "Hardening by Transformation and Cold Working in a Hadfield Steel Cone Crusher Liner." Metals 11, no. 6 (2021): 961. http://dx.doi.org/10.3390/met11060961.

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This paper presents the characterization of a secondary cone crusher concave liner made of Hadfield steel used in Chilean mining after crushing copper minerals during all service life. During use, a cone crusher concave liner suffers indentation (cold working) and abrasion; this combination provides the concave with a layer that constantly renews itself, maintaining a surface highly resistant to abrasive wear. The results presented here were obtained using optical microscopy, microhardness test, measuring abrasion using the dry sand/rubber wheel apparatus, and x-ray diffraction peaks analysis

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10

Chen, Chi Feng, Bo Han Lin, and Shin Hong Kuo. "A Highly Directional Light Emitting Diode Light Guide Bar Based on Concave V-Grooves." Advanced Materials Research 605-607 (December 2012): 2019–22. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.2019.

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A light emitting diode (LED) light guide bar based on concave V-grooves is investigated by using optical simulation software to control the distribution of illumination angle. The structure parameters of V-groove and the distribution of micro-prism are considered. It is found that the illumination angle of LED light guide bar is most concentrated within ±35 degrees.

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11

Zhang, Lin-Fei, Sheng-Liang Zhong, and An-Wu Xu. "Highly Branched Concave Au/Pd Bimetallic Nanocrystals with Superior Electrocatalytic Activity and Highly Efficient SERS Enhancement." Angewandte Chemie 125, no. 2 (2012): 673–77. http://dx.doi.org/10.1002/ange.201205279.

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12

Zhang, Lin-Fei, Sheng-Liang Zhong, and An-Wu Xu. "Highly Branched Concave Au/Pd Bimetallic Nanocrystals with Superior Electrocatalytic Activity and Highly Efficient SERS Enhancement." Angewandte Chemie International Edition 52, no. 2 (2012): 645–49. http://dx.doi.org/10.1002/anie.201205279.

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13

Wu, Yu Mao, Hanzhang Zhou, Ya-Qiu Jin, Jun Hu, Haijing Zhou, and Weijie Wang. "The Efficient Method for Calculating the Physical Optics Scattered Fields from the Concave Surfaces." International Journal of Antennas and Propagation 2020 (July 23, 2020): 1–12. http://dx.doi.org/10.1155/2020/5296754.

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In this work, the numerical steepest descent path (NSDP) method is proposed to compute the highly oscillatory physical optics (PO) scattered fields from the concave surfaces, including both the monostatic and the bistatic cases. Quadratic variations are adopted to approximate the integrands of the PO type integral into the canonical form. Then, on involving the NSDP method, we deform the integration paths of the integrals into several NSDPs on the complex plain, through which the highly oscillatory integrands are converted to exponentially decay integrands. The RCS results of the PO scattered

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14

Lim, Min-Cheol, Tai-Yong Kim, Gyeongsik Ok, Hyun Jung Kim, Yun-Sang Choi, and Young-Rok Kim. "Concave Microwell Formation Induced by PDMS Water Vapor Permeability for Spheroid Generation." Micromachines 15, no. 12 (2024): 1496. https://doi.org/10.3390/mi15121496.

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This study introduces a novel method for the fabrication of concave microwells involving water vapor permeation through polydimethylsiloxane (PDMS). This method leverages the exceptional water vapor permeability of PDMS to enable a scalable and cost-effective fabrication process, addressing the limitations of existing techniques such as photolithography that are resource-intensive and complex. PDMS is more permeable to water vapor than to other gas molecules, resulting in the formation of microwells. Smooth-sloped concave microwells are formed by depositing droplets of 10% ethylene glycol on a

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15

Bulzak, Tomasz. "Assessment of the Susceptibility to Material Fracture in the Cross-Wedge Rolling Process with Concave Tools." Materials 15, no. 19 (2022): 6605. http://dx.doi.org/10.3390/ma15196605.

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The internal cracking of forgings during the cross-wedge rolling (CWR) process is a serious limitation that prevents the correct implementation of this process. The phenomenon of material cracking in the CWR process reduces the technological and application possibilities of this highly efficient process, which can produce forgings with high geometric accuracy. This article presents the results of rolling forgings at different temperatures. An analysis of the results showed that the size of the resulting material fracture in the CWR process is related to the size of the ovalisation of the cross

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16

Li, Zhenhu, Yurong Ma, and Limin Qi. "Controlled synthesis of MnxFe1−xO concave nanocubes and highly branched cubic mesocrystals." CrystEngComm 16, no. 4 (2014): 600–608. http://dx.doi.org/10.1039/c3ce41618f.

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17

Csete, M., and Zs Bor. "Plano–concave microcuvette for measuring the absorption coefficient of highly absorbing liquids." Applied Optics 36, no. 10 (1997): 2133. http://dx.doi.org/10.1364/ao.36.002133.

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18

Hamada, Tetsuya, Ryo Irie, Jun Mihara, Kiyoe Hamachi, and Tsutomu Katsuki. "Highly enantioselective benzylic hydroxylation with concave type of (salen)manganese(III) complex." Tetrahedron 54, no. 34 (1998): 10017–28. http://dx.doi.org/10.1016/s0040-4020(98)00603-6.

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19

Li, Pengwei, Lina Liu, Dongjie Qin, et al. "Cu2O concave hexapod microcrystals: selective facet etching and highly improved photocatalytic performance." Journal of Materials Science 54, no. 4 (2018): 2876–84. http://dx.doi.org/10.1007/s10853-018-3031-8.

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20

Su, Qi, Xian Huang, Kuibo Lan, Tao Xue, Wei Gao, and Qiang Zou. "Highly sensitive ionic pressure sensor based on concave meniscus for electronic skin." Journal of Micromechanics and Microengineering 30, no. 1 (2019): 015009. http://dx.doi.org/10.1088/1361-6439/ab5a2b.

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21

Xia, Bao Yu, Hao Bin Wu, Xin Wang, and Xiong Wen David Lou. "Highly Concave Platinum Nanoframes with High-Index Facets and Enhanced Electrocatalytic Properties." Angewandte Chemie 125, no. 47 (2013): 12563–66. http://dx.doi.org/10.1002/ange.201307518.

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22

Xia, Bao Yu, Hao Bin Wu, Xin Wang, and Xiong Wen David Lou. "Highly Concave Platinum Nanoframes with High-Index Facets and Enhanced Electrocatalytic Properties." Angewandte Chemie International Edition 52, no. 47 (2013): 12337–40. http://dx.doi.org/10.1002/anie.201307518.

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23

Yu, Chun-Mei, Dang-Jun Zhao, and Ye Yang. "Efficient Convex Optimization of Reentry Trajectory via the Chebyshev Pseudospectral Method." International Journal of Aerospace Engineering 2019 (May 2, 2019): 1–9. http://dx.doi.org/10.1155/2019/1414279.

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A novel sequential convex (SCvx) optimization scheme via the Chebyshev pseudospectral method is proposed for efficiently solving the hypersonic reentry trajectory optimization problem which is highly constrained by heat flux, dynamic pressure, normal load, and multiple no-fly zones. The Chebyshev-Gauss Legend (CGL) node points are used to transcribe the original dynamic constraint into algebraic equality constraint; therefore, a nonlinear programming (NLP) problem is concave and time-consuming to be solved. The iterative linearization and convexification techniques are proposed to convert the

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24

Yoon, Hyewon, and Seongin Hong. "Highly improved photocurrent of a flexible MoS₂ photodetector via a backside Al metal mirror and its in- and outward folding states." RSC Advances 14, no. 47 (2024): 34979–84. http://dx.doi.org/10.1039/d4ra00459k.

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The photocurrent of a flexible MoS2 photodetector was significantly improved by attaching an Al metal mirror on its backside. In-folding state, the Al metal mirror acted as a concave mirror, further boosting the photocurrent.

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25

Mangum, James M., Ferdinand Harerimana, Millicent N. Gikunda, and Paul M. Thibado. "Mechanisms of Spontaneous Curvature Inversion in Compressed Graphene Ripples for Energy Harvesting Applications via Molecular Dynamics Simulations." Membranes 11, no. 7 (2021): 516. http://dx.doi.org/10.3390/membranes11070516.

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Electrically conductive, highly flexible graphene membranes hold great promise for harvesting energy from ambient vibrations. For this study, we built numerous three-dimensional graphene ripples, with each featuring a different amount of compression, and performed molecular dynamics simulations at elevated temperatures. These ripples have a convex cosine shape, then spontaneously invert their curvature to concave. The average time between inversion events increases with compression. We use this to determine how the energy barrier height depends on strain. A typical convex-to-concave curvature

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26

Luo, Linbin, Shuonan Shan, and Xinghui Li. "A Review: Laser Interference Lithography for Diffraction Gratings and Their Applications in Encoders and Spectrometers." Sensors 24, no. 20 (2024): 6617. http://dx.doi.org/10.3390/s24206617.

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The unique diffractive properties of gratings have made them essential in a wide range of applications, including spectral analysis, precision measurement, optical data storage, laser technology, and biomedical imaging. With advancements in micro- and nanotechnologies, the demand for more precise and efficient grating fabrication has increased. This review discusses the latest advancements in grating manufacturing techniques, particularly highlighting laser interference lithography, which excels in sub-beam generation through wavefront and amplitude division. Techniques such as Lloyd’s mirror

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27

LOPES-ANDRADE, CRISTIANO, and JOHN F. LAWRENCE. "Phellinocis, a new genus of Neotropical Ciidae (Coleoptera: Tenebrionoidea)." Zootaxa 1034, no. 1 (2005): 43. http://dx.doi.org/10.11646/zootaxa.1034.1.3.

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Phellinocis gen. n. is described based on three species: P. romualdoi sp. n. (type species) from Brazil, P. erwini sp. n. from Panama and P. thayerae sp. n. from Costa Rica and Panama. Diagnostic characters of the genus include the oblong, highly convex, subglabrous body, strongly declined, convex to slightly concave and often fluted elytral apices, 8or 9-segmented antennae, short and concave prosternum, laminate prosternal process, and protibia with simple outer edge and two stout teeth at apex. Phellinocis romualdoi has two features not found in any other described species of Ciidae: intrasp

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28

Liu, Di, Qingqing Lv, Siqi Lu, et al. "IrCuNi Deeply Concave Nanocubes as Highly Active Oxygen Evolution Reaction Electrocatalyst in Acid Electrolyte." Nano Letters 21, no. 7 (2021): 2809–16. http://dx.doi.org/10.1021/acs.nanolett.0c04878.

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29

HAMADA, T., R. IRIE, J. MIHARA, K. HAMACHI, and T. KATSUKI. "ChemInform Abstract: Highly Enantioselective Benzylic Hydroxylation with Concave Type of (Salen)manganese(III) Complex." ChemInform 29, no. 49 (2010): no. http://dx.doi.org/10.1002/chin.199849074.

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30

Nimbs, Matt J., and Nerida G. Wilson. "Saved by the Shell: Molecular Analysis Detects the Cryptic Sea Hare, Aplysia concava G. B. Sowerby I, 1833 (Mollusca: Heterobranchia: Aplysiidae), from Oceania, with a Redescription." Taxonomy 1, no. 2 (2021): 48–59. http://dx.doi.org/10.3390/taxonomy1020006.

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A recent taxonomic revision split the circumglobal sea hare Aplysia parvula into 10 constituent taxa, of which only three are likely to be found in the Southern Pacific. This prompted an investigation of animals previously identified as A. parvula from Australia. Specimens collected from Eastern Australia and Hunter Island, east of New Caledonia, could not be satisfactorily identified with any of the currently accepted taxa based on morphological diagnostic features listed in the revision; however, the presence of a highly concave shell is diagnostic. Quantification of genetic divergence using

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31

Fronimos, John A., Jeffrey A. Wilson, and Tomasz K. Baumiller. "Polarity of concavo-convex intervertebral joints in the necks and tails of sauropod dinosaurs." Paleobiology 42, no. 4 (2016): 624–42. http://dx.doi.org/10.1017/pab.2016.16.

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AbstractThe highly elongated necks, and often tails, of sauropod dinosaurs were composed of concavo-convex vertebrae that provided stability without compromising mobility. Polarities of these concavo-convex joints in the neck and tail are anatomically opposite one another but mechanically equivalent. Opisthocoelous cervical vertebrae and procoelous caudal vertebrae have the convex articular face directed away from the body and the concave articular face directed toward the body. This “sauropod-type” polarity is hypothesized to be (1) more resistant to fracturing of the cotylar rim and (2) bett

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Choudhury, Balamati, Hema Singh, and R. M. Jha. "RF Field Build-Up inside a Manned Space Vehicle Using Novel Ray-Tracing Algorithm." International Journal of Aerospace Engineering 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/438239.

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The radio-frequency (RF) field mapping and its analysis inside a space vehicle cabin, although of immense importance, represent a complex problem due to their inherent concavity. Further hybrid surface modeling required for such concave enclosures leads to ray proliferation, thereby making the problem computationally intractable. In this paper, space vehicle is modeled as a double-curvatured general paraboloid of revolution (GPOR) frustum, whose aft section is matched to an end-capped right circular cylinder. A 3D ray-tracing package is developed which involves a uniform ray-launching scheme,

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33

Li, Zhiming, Dayi Yin, Quan Zhang, and Huixing Gong. "Monoscopic Phase Measuring Deflectometry Simulation and Verification." Electronics 11, no. 10 (2022): 1634. http://dx.doi.org/10.3390/electronics11101634.

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The three-dimensional (3D) shape of specular surfaces is important in aerospace, precision instrumentation, and automotive manufacturing. The phase measuring deflectometry (PMD) method is an efficient and highly accurate technique to measure specular surfaces. A novel simulation model with simulated fringe patterns for monoscopic PMD is developed in this study. Based on the pre-calibration and the ray-tracing model of the monoscopic PMD system, a comprehensive model from deformed pattern generation to shape reconstruction was constructed. Experimental results showed that this model achieved hi

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34

Li, Dongyang, Zhifeng Zhong, Tianxiong Chen, and Qiangqiang Yan. "Research on optimization of complex path of inspection robot." Journal of Physics: Conference Series 2029, no. 1 (2021): 012124. http://dx.doi.org/10.1088/1742-6596/2029/1/012124.

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Abstract It is a common method to use intelligent robots for automatic inspection in highly automated ships. Path planning and optimization research are an important part of robotics. Intelligent tracking is the key to autonomous movement of mobile robots. In this paper, a grid map is used to establish a simulation model of the robot tracing environment. In a grid map, the more complex the map environment, the slower the algorithm will converge. The -fill-merge method processes the concave obstacles in the environment into regular shapes, reduces the number of unnecessary calculations, thereby

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35

Chang, Cheng, Gang Luo, Mingwen Wang, and Yunqiang Sun. "Near-salt perturbations of stresses and pore fluid pressures and their impacts on wellbore stability in the Kuqa depression of the Tarim Basin, China." Interpretation 8, no. 2 (2020): SG33—SG49. http://dx.doi.org/10.1190/int-2019-0168.1.

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Salt structures are highly associated with economic hydrocarbon reservoirs. However, drilling a wellbore near or through the salt is usually difficult because the near-salt stresses and pore fluid pressures are largely perturbed due to weaker mechanical strength of salt bodies than their surrounding sediments. We have developed a 2D plane-strain poroelastic finite-element model to simulate stresses and pore pressures in the horizontal-compression salt tectonic system, the Kuqa depression in the Tarim Basin, China, and we use the model results of stresses and pore pressures to calculate safe dr

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36

Jahanbakhshi, Reza, and Cyrus K. Madnia. "Entrainment in a compressible turbulent shear layer." Journal of Fluid Mechanics 797 (May 24, 2016): 564–603. http://dx.doi.org/10.1017/jfm.2016.296.

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Direct numerical simulations (DNS) of temporally evolving shear layers have been performed to study the entrainment of irrotational flow into the turbulent region across the turbulent/non-turbulent interface (TNTI). Four cases with convective Mach number from 0.2 to 1.8 are used. Entrainment is studied via two mechanisms; nibbling, considered as vorticity diffusion across the TNTI, and engulfment, the drawing of the pockets of the outside irrotational fluid into the turbulent region. The mass flow rate due to nibbling is calculated as the product of the entrained mass flux with the surface are

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37

Srivastava, S., and P. Verma. "Gongylanthus indicus Sp. Nov. (Hepaticae) from Nilgiri Hills, India." Indian Journal of Forestry 28, no. 2 (2005): 200–205. http://dx.doi.org/10.54207/bsmps1000-2005-mn76kf.

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The genus Gongylanthus Nees (Arnelliaceae) is being reported as new addition to India with G. indicus sp. nov. as new to science. The plants grow in Naduvattam (Nilgiri hills), Tamil Nadu forming terricolous population. The genus is remarkable in having a well-defined positively geotropic cylindrical marsupium – a special protective device (shoot-calyptra) over the developing sporophyte. This species is characterized by perfectly connate and highly concave leaves, and feebly developed trigones in leaf cells and scattered rhizoids.

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Srivastava, S., and P. Verma. "Gongylanthus indicus sp. Nov. (Hepaticae) from Nilgiri, India." Indian Journal of Forestry 27, no. 4 (2004): 417–22. http://dx.doi.org/10.54207/bsmps1000-2004-66ui7i.

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The genus Gongylanthus Nees (Arnelliaceae) is being reported as new addition to India with G. indicus sp. nov. as new to science. The plants grow in Naduvattam (Nilgiri hills), Tamil Nadu forming terricolous population. The genus is remarkable in having a well-defined positively geotropic cylindrical marsupium - a special protective device (shoot-calyptra) over the developing sporophyte. This species is characterized by perfectly connate and highly concave leaves, and feebly developed trigones in leaf cells and scattered rhizoids.

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39

LEIVA, JAIRO OSVALDO RODRIGUEZ, RAIMUNDA ALVES SILVA, ÊNIO FARIAS DE FRANÇA E. SILVA, and GLÉCIO MACHADO SIQUEIRA. "MULTIFRACTAL ANALYSIS OF SOIL RESISTANCE TO PENETRATION IN DIFFERENT PEDOFORMS." Revista Caatinga 34, no. 1 (2021): 189–98. http://dx.doi.org/10.1590/1983-21252021v34n119rc.

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ABSTRACT Soils are highly variable across landscapes, which can be assessed and characterized according to scale, as well as fractal and multifractal concepts of scale. Thus, the objective of this study was to analyze the multifractality of the penetration resistance (PR) of vertical profiles from different slope forms (concave and convex). The experimental plot incorporated 44.75 ha, and the PR was measured at 70 sampling points in the 0-0.6 m layer, distributed in concave (Type A: 38 sampling points) and convex pedoforms (Type B: 32 sampling points). Data analysis was performed using the PR

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40

Sturgis, J. C., and I. Mudawar. "Assessment of CHF Enhancement Mechanisms in a Curved, Rectangular Channel Subjected to Concave Heating." Journal of Heat Transfer 121, no. 2 (1999): 394–404. http://dx.doi.org/10.1115/1.2825992.

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An experimental study was undertaken to examine the enhancement in critical heat flux (CHF) provided by streamwise curvature. Curved and straight rectangular flow channels were fabricated with identical 5.0 × 2.5 mm cross sections and heated lengths of 101.6 mm in which the heat was applied to only one wall—the concave wall (32.3 mm radius) in the curved channel and a side wall in the straight. Tests were conducted using FC-72 liquid with mean inlet velocity and outlet subcooling of 0.25 to 10 m s−1 and 3 to 29°C, respectively. Centripetal acceleration for curved flow reached 315 times earth’s

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41

Wang, Huajun, and Wenqian Li. "A novel highly efficient alternating direction method of multipliers for large-scale trimmed concave SVM." Applied Soft Computing 167 (December 2024): 112331. http://dx.doi.org/10.1016/j.asoc.2024.112331.

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42

Xu, Peng, Chenyu Tao, Yuanyuan Jiang, Shushu Chu, Kepeng Song, and Yizhong Lu. "Concave single-atom Co nanozymes with densely edge-hosted active sites for highly sensitive immunoassay." Chemical Engineering Journal 495 (September 2024): 153479. http://dx.doi.org/10.1016/j.cej.2024.153479.

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43

Li, Xinxin, Xiang Lin, Xuelin Zhao, et al. "Self-assembled monolayer film of concave star-shaped Au nanocrystals as highly efficient SERS substrates." Applied Surface Science 518 (July 2020): 146217. http://dx.doi.org/10.1016/j.apsusc.2020.146217.

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44

Zhang, Lin-Fei, Sheng-Liang Zhong, and An-Wu Xu. "Rücktitelbild: Highly Branched Concave Au/Pd Bimetallic Nanocrystals with Superior Electrocatalytic Activity and Highly Efficient SERS Enhancement (Angew. Chem. 2/2013)." Angewandte Chemie 125, no. 2 (2012): 802. http://dx.doi.org/10.1002/ange.201209489.

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45

Sun, Nan, Shuai Wang, Kaifa Zhou, Wenyi Ma, and Bohao Xu. "FEA and Quasi-static Test on Energy Absorption Characteristic of Space Orthogonal Concave Honeycomb Structure with Negative Poisson’s Ratio." Journal of Physics: Conference Series 2160, no. 1 (2022): 012064. http://dx.doi.org/10.1088/1742-6596/2160/1/012064.

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Abstract As a representative of metamaterials, negative Poisson’s ratio (NPR) material possesses special mechanical properties such as expansion, negative compression ratio and so forth. As a result, it is widely used in the fields of vehicles, aerospace, et al. In this paper, a novel space orthogonal concave honeycomb structure (OC) is designed based on traditional concave honeycomb structure (CHS). In order to explore the influence rule of OC structure on the deformation and energy absorption capacity of crash box under low-speed collision, mechanical analysis and parameter research on OC st

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Yang, Chuan, Zongtao Zhu, and Qian Cheng. "Acoustic characteristics of standing waves in ultrasound-assisted laser–metal inert gas hybrid welding." International Journal of Modern Physics B 33, no. 01n03 (2019): 1940028. http://dx.doi.org/10.1142/s0217979219400289.

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We propose an ultrasound-assisted laser–metal inert gas hybrid welding process, where acoustic effects are introduced by applying ultrasonic vibration in the axial direction of the arc. We studied the acoustic characteristics in the space between the acoustic radiating and reflecting surfaces. Based on a simplified two-dimensional model, we used the finite-element method to study the influence of the height and inclination of the radiating surface on the acoustic characteristics. The simulated sound pressure distribution was highly sensitive to the height and inclination of the radiating surfa

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Iliyasu, Abdullah M., Farhad Fouladinia, Ahmed S. S. Salama, Gholam Hossein Roshani, and Kaoru Hirota. "Intelligent Measurement of Void Fractions in Homogeneous Regime of Two Phase Flows Independent of the Liquid Phase Density Changes." Fractal and Fractional 7, no. 2 (2023): 179. http://dx.doi.org/10.3390/fractalfract7020179.

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Determining the amount of void fraction of multiphase flows in pipelines of the oil, chemical and petrochemical industries is one of the most important challenges. Performance of capacitance based two phase flow meters highly depends on the fluid properties. Fluctuation of the liquid phase properties such as density, due to temperature and pressure changes, would cause massive errors in determination of the void fraction. A common approach to fix this problem is periodic recalibration of the system, which is a tedious task. The aim of this study is proposing a method based on artificial intell

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MUTHUKATTURAJA, MARIMUTHU, and CHELLAIAH BALASUBRAMANIAN. "A new species of Caenis Stephens, 1835 (Ephemeroptera: Caenidae) from Tamil Nadu, Southern India." Zootaxa 4980, no. 2 (2021): 366–72. http://dx.doi.org/10.11646/zootaxa.4980.2.7.

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A new mayfly species Caenis maduraiensis sp. nov. is described and illustrated from nymph and adults collected from lentic habitat around Madurai. The nymph can be distinguished by the following characters: anterior margin of labrum with row of bipectinate setae longer laterally and a group of highly fringed setae behind emargination; and hind claw long, slender and hooked with row of denticles. Adults are characterized by prosternal triangle with slightly concave sides, tip acutely pointed; apical part of forceps abruptly narrowed to the tip, with a long apical spine, and few trichomes on sur

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Caterino, Michael S., and David R. Maddison. "An early and mysterious histerid inquiline from Cretaceous Burmese amber (Coleoptera, Histeridae)." ZooKeys 733 (February 1, 2018): 119–29. https://doi.org/10.3897/zookeys.733.23126.

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We describe a new genus and species of Histeridae from Upper Cretaceous Burmese amber, Amplectister tenax Caterino & Maddison, gen. & sp. n. This species represents the third known Cretaceous histerid, which, like the others, is highly distinct and cannot easily be placed to subfamily. It exhibits prosternal characters in common with Saprininae, but other characters appear inconsistent with this possibility. The abdominal venter is strongly concave, and the hind legs are enlarged and modified for grasping. We hypothesize that this represents the earliest example in Histeridae of modifi

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Hwang, Youngkyu, Hyun A. Cho, Suk Ho Kim, et al. "Printable ultrathin substrates formed on a concave–convex underlayer for highly flexible membrane-type electrode stickers." Soft Matter 8, no. 29 (2012): 7598. http://dx.doi.org/10.1039/c2sm25637a.

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