scholarly journals A Novel Method for Pressure Mapping between Shell Meshes of Varying Geometries and Resolutions

Computation ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 29
Author(s):  
Matthew David Marko
Keyword(s):  
Surface Areas ◽  
Pressure Mapping ◽  
3D Surface ◽  
Pressure Profiles ◽  
Surface Shell ◽  
Novel Method

This manuscript discusses a novel method to map pressure results from one 3D surface shell mesh onto another. This method works independently of the actual pressures, and only focuses on ensuring the surface areas consistently match. By utilizing this approach, the cumulative forces consistently match for all input pressures. This method is demonstrated to work for pressure profiles with precipitous changes in pressures, and with small quadrangular source elements being applied to a mix of large quadrangular and triangular target elements, and the forces at all pressure profiles match remarkably.

scholarly journals A Novel Method for Meshed CFD to FEA Pressure Mapping

2018 ◽  
Author(s):  
Matthew Marko
Keyword(s):  
Numerical Analysis ◽  
Surface Areas ◽  
Pressure Mapping ◽  
3D Surface ◽  
Pressure Profiles ◽  
Surface Shell ◽  
Novel Method

This manuscript discusses a novel method to map pressure results from one 3D surface shell mesh onto another. This technique is especially important when transferring results from one numerical analysis to another. This method works independent of the actual pressures, and only focuses on ensuring the surface areas consistently match. By utilizing this approach, the cumulative forces consistently match for all input pressures. This method is demonstrated to work for pressure profiles with precipitous changes in pressures, and with small quadrangular source elements being applied to a mix of large quadrangular and triangular target elements, and the forces at all pressure profiles match remarkably.

scholarly journals New approach in the application of lignin for the synthesis of hybrid materials

2017 ◽  
Vol 89 (1) ◽  
pp. 161-171 ◽  
Author(s):  
Beata Podkościelna ◽  
Marta Goliszek ◽  
Olena Sevastyanova
Keyword(s):  
Suspension Polymerization ◽  
Nitrogen Adsorption ◽  
Experimental Protocol ◽  
New Approach ◽  
Surface Areas ◽  
Adsorption Data ◽  
Novel Method ◽  
Derivatives Of ◽  
Polymerization Method ◽  
Nitrogen Adsorption Data

AbstractIn this study, a novel method for the synthesis of hybrid, porous microspheres, including divinylbenzene (DVB), triethoxyvinylsilane (TEVS) and methacrylated lignin (L-Met), is presented. The methacrylic derivatives of kraft lignin were obtained by reaction with methacryloyl chloride according to a new experimental protocol. The course of the modification of lignin was confirmed by attenuated total reflectance (ATR-FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The emulsion-suspension polymerization method was employed to obtain copolymers of DVD, TEVS and L-Met in spherical forms. The porous structures and morphologies of the obtained lignin-containing functionalized microspheres were investigated by low-temperature nitrogen adsorption data and scanning electron microscopy (SEM). The microspheres are demonstrated to be mesoporous materials with specific surface areas in the range of 430–520 m2/g. The effects of the lignin component on the porous structure, shape, swelling and thermal properties of the microspheres were evaluated.

Forming 3D Sheet Metals by Means of Continuous Rolling Method

2009 ◽  
Vol 16-19 ◽  
pp. 570-574 ◽  
Author(s):  
Zhi Qing Hu ◽  
Ming Zhe Li ◽  
Xue Peng Gong ◽  
Zeng Ming Feng
Keyword(s):  
Sheet Metal ◽  
Three Dimensional ◽  
Sheet Metals ◽  
Continuous Rolling ◽  
The Core ◽  
3D Surface ◽  
Multipoint Forming ◽  
Rolling Method ◽  
Novel Method

In this paper, we present a novel method of using the continuous rolling to fabricate three-dimensional sheet metal. The core bendable roller is composed of the flexible axis and the controllable equipment. The transversal shape of the sheet metal can be realized by regulating the controllable equipment to make the axis of bendable roller bent; the longitudinal shape is formed by driving the three bendable rollers rotated and the top roller making a displacement synchronously. Some experiments were performed and typical 3D surface parts were formed. Based on the results of the experiments, the effects of the thickness and the rolling times are discussed. The results of the research will be beneficial to define the parameters and perfect the theory of continuous multipoint forming of multiform 3D parts.

Novel method to synthesize ordered mesoporous silica with high surface areas

2008 ◽  
Vol 10 (4) ◽  
pp. 408-415 ◽  
Author(s):  
Montserrat Colilla ◽  
Francisco Balas ◽  
Miguel Manzano ◽  
María Vallet-Regí
Keyword(s):  
Mesoporous Silica ◽  
High Surface ◽  
Ordered Mesoporous Silica ◽  
Surface Areas ◽  
Ordered Mesoporous ◽  
Novel Method

scholarly journals Preparation of High-Performance Enteromorpha Prolifera–Based Porous Carbons by Nitrogen Modification and Their Electrochemical Performance

2021 ◽  
Vol 9 ◽  
Author(s):  
Ming Li ◽  
Kuihua Han ◽  
Zhaocai Teng ◽  
Meimei Wang ◽  
Yang Cao ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Performance ◽  
Chemical Properties ◽  
High Rate ◽  
Cycle Performance ◽  
Enteromorpha Prolifera ◽  
Porous Carbons ◽  
Surface Areas ◽  
Notable Increase ◽  
Novel Method

This study presents a novel method to improve the electrochemical performance of porous carbons (PCs) by simply adjusting the elemental composition of their precursors with nitrogen-rich materials as additives. Nitrogen-modified enteromorpha prolifera–based (EP-based) PCs are prepared from EP and urea (or melamine). Overall, compared with the control PC without nitrogen modification, their pore structures and surface chemical properties present similar improvement. When used in supercapacitors, their specific capacitances increase by approximately 22% due to their significant development of mesopores at 2.5–7.0 nm, which increases the effective surface areas. With an appropriate amount of nitrogen-containing or oxygen-containing functional groups maintaining surface wettability, the notable increase of graphitized N improves their conductivity. Due to the higher graphitization degrees, their resistances are reduced. With more mesopores transporting ions, they exhibit excellent high-rate capacitive performance. Moreover, they show remarkable long cycle performance with the specific capacitance retention of larger than 92% after 10,000 cycles.

scholarly journals A Novel Method for 3D Surface and Solid Construction Analysis of Fabric Microstructure

2012 ◽  
Vol 21 (3) ◽  
pp. 539-550 ◽  
Author(s):  
Ye-Jin Lee ◽  
Byung-Cheol Lee
Keyword(s):  
3D Surface ◽  
Novel Method

Morphometric patterns among the 3D surface areas of human hand entheses

2016 ◽  
Vol 160 (4) ◽  
pp. 694-707 ◽  
Author(s):  
Fotios Alexandros Karakostis ◽  
Carlos Lorenzo
Keyword(s):  
Human Hand ◽  
Surface Areas ◽  
3D Surface

Stable nanocrystalline zirconia sols prepared by a novel method: Alcohol thermal synthesis

2000 ◽  
Vol 15 (2) ◽  
pp. 402-406 ◽  
Author(s):  
Junping Zhao ◽  
Wenhao Fan ◽  
Dong Wu ◽  
Yuhan Sun
Keyword(s):  
Hydrothermal Synthesis ◽  
Chemical Bonding ◽  
Sol Gel ◽  
Cubic Phase ◽  
Thermal Synthesis ◽  
Surface Areas ◽  
Sol Gel Process ◽  
Primary Particles ◽  
Novel Method ◽  
Nanocrystalline Zirconia

Nanocrystalline zirconia sols with a metastable cubic phase were synthesized from diglycol-modified zirconium n-propoxide via a novel method, alcohol thermal synthesis. The chemical bonding of diglycol with zirconium was found to be important in obtaining stable nanocrystalline zirconia sols. Sols produced in this way were translucent with the primary particles of 4-nm crystallites, and the corresponding gel was shown to be mesoporous with a pore size from 2.5 to 3.8 nm and Brunauer—Emmett—Teller surface areas between 130 and 266 m2 g−1. This indicates that alcohol thermal synthesis shares the advantages of both the sol-gel process and hydrothermal synthesis.

scholarly journals Biodiesel production from catfish (Pangasius) fat via ultrasound- assisted method

2019 ◽  
Vol 1 (1) ◽  
pp. 15-20
Author(s):  
Intan Shafinaz Abd Manaf ◽  
Mohd Hasbi Ab. Rahim ◽  
Gaanty Pragas Maniam
Keyword(s):  
Reaction Time ◽  
Mechanical Energy ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Reaction Conditions ◽  
Surface Areas ◽  
Novel Method ◽  
Working Frequency ◽  
Ultrasound Assisted ◽  
Improve Mass Transfer

This paper reports studies in ultrasound-assisted heterogeneous solid catalyzed (CaO) synthesis of biodiesel from catfish (Pangasius) fat. Ultrasonication provides a faster chemical reaction, and the rate enhancements, refereed by cavitation that causes the building- up of pressures and temperatures, as well as increased catalytic surface areas and improve mass transfer. This novel method offers significant advantages such as shorter reaction time and less energy consumption than the conventional method, efficient molar ratio of methanol to triglycerides and provides the mechanical energy for mixing. The required activation energy for initiating the transesterification reaction and so, it gives a higher yield by transesterification of oils into biodiesel. The optimized reaction conditions were as follows: methanol to oil molar ratio of 15:1; catalyst (B-CaO), 9 wt. %; reaction temperature, 65 ± 2 °C; reaction time, 1 h at a working frequency of 42 kHz and the power supply of 100W. Highest conversion of 96.4 wt. % was achieved.

Cerebral Tissue Response in Chronic Electrode Implantation

1977 ◽  
Vol 35 ◽  
pp. 624-625
Author(s):  
R.F. Dodson ◽  
L.W-F Chu ◽  
N. Ishihara
Keyword(s):  
Tissue Response ◽  
Whole Body ◽  
Platinum Electrodes ◽  
Fixed Tissue ◽  
Electrode Implantation ◽  
Surface Areas ◽  
Tissue Changes ◽  
Micron Diameter ◽  
Extent Of Damage ◽  
Electrode Sheath

The extent of damage surrounding an implanted electrode in the cerebral cortex is a question of significant importance with regard to attaining consistency and validity of physiological recordings. In order to determine the extent of such tissue changes, 150 micron diameter platinum electrodes were implanted in the cortex of four adult baboons, and after eight days the animals were sacrificed by whole body perfusion with a 3% glutaraldehyde in 0.1M phosphate fixative.The calvarium was carefully removed and the electrode tracts were readily discernible in the firm, glutaraldehyde fixed tissue.Careful dissection of the zone of the electrode tract resulted in a small block which was further sectioned into tip, mid-tract and surface areas. Ultrastructurally, damage extended from the electrode sheath to the greatest extent of from 0.2 to 3.5 mm.

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