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Journal articles on the topic 'Experimentos in silico'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Macedo Junior, Lafayete Modesto de, Tuane Ferreira Melo, and Ana Paula Peconick. "Predição in silico de epítopos antigênicos para produção de uma vacina humana contra leishmaniose visceral." Scire Salutis 9, no. 1 (2019): 62–71. http://dx.doi.org/10.6008/cbpc2236-9600.2019.001.0008.

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Por meio de análises in silico, procurou-se identificar e selecionar epítopos de Leishmania infantum potencialmente capazes de disparar resposta imunogênica para elaboração de uma vacina comercial contra a leishmaniose visceral humana. Realizou-se a seleção de sequências para obtenção de um banco de dados específico e, posteriormente, analisou-se a similaridade genética com complexo de espécies causadoras de Leishmaniose Visceral (LV). Foram selecionadas sequências de interesse de L. infantum. Em seguida, fez-se a predição de estrutura secundária das sequências proteicas e a obtenção de epítop

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2

Garcia, Vinícius, Alessandra Ferreira Ribas, Luiz Gonzaga Esteves Vieira, and Tiago Benedito dos Santos. "IN SILICO ANALYSIS OF THE Dof TRANSCRIPTION FACTOR FAMILY IN Coffea canephora." COLLOQUIUM AGRARIAE 14, no. 4 (2018): 99–111. http://dx.doi.org/10.5747/ca.2018.v14.n4.a253.

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A família Dof(DNA-binding with One Finger) é um grupo de fatores de transcrição que desempenham papéis importantes no crescimento, desenvolvimento e na resposta das plantas aos estresses bióticos e abióticos. Os genes Dofforam identificados e caracterizados em várias espécies de plantas;entretanto até o presente momento não há informações sobre esses genes em café. No presente estudo foram identificados 24 membros da família Dofno genoma de C. canephoradepositados no banco de dados Coffee Genome Hub. Análises sistemáticas de bioinformática foram realizadas para caracterizar os genes DofemC. ca

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Heninng, Fernando Augusto, Luciano Carlos da Maia, Liliane Marcia Mertz, Paulo Dejalma Zimmer, and Antônio Costa de Oliveira. "Predição in silico de marcadores microssatélites relacionados ao tegumento de sementes de soja." Revista Brasileira de Sementes 31, no. 4 (2009): 49–56. http://dx.doi.org/10.1590/s0101-31222009000400006.

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O sucesso na obtenção de altas produtividades de soja depende da utilização de sementes de qualidade. Muitos problemas que comprometem a qualidade fisiológica das sementes podem ser relacionados às características do tegumento. Inúmeros trabalhos afirmam que sementes de soja com tegumento semipermeável à água apresentam maior tolerância a patógenos e pragas, menor susceptibilidade aos danos mecânicos, às adversidades climáticas e à deterioração por umidade. A inclusão das características de tegumento semipermeável nas cultivares atuais pode minimizar problemas relacionados à qualidade de semen

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4

Figueiredo, Viviane, Janaina Emanuella Galvão Menezes, Franco De Almeida Barros, Manassés Tercio Vieira Grangeiro, and Lafayette Nogueira Junior. "Adesão entre cimento resinoso e zircônia: uma revisão de literatura sobre tratamentos da superfície e testes de resistência de união." Journal of Dentistry & Public Health 10, no. 1 (2019): 48–57. http://dx.doi.org/10.17267/2596-3368dentistry.v10i1.2234.

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OBJETIVO: revisar a literatura sobre a adesão a cerâmica zircônia ao cimento resinoso enfatizando os diferentes tratamentos disponíveis na literatura. MATERIAL E MÉTODO: foi realizada busca nas bases de dados eletrônicas PubMed, Scielo e Bireme, utilizando os termos de busca adhesion, zircônia, bond strength. Os critérios de inclusão e exclusão foram estudos in silico, in vitro, in vivo; revisão sistemáticas e metanálise, literatura que aborda as variáveis em estudo, idioma em português e inglês. RESULTADOS: a adesão da zircônia aos demais materiais restauradores vem ganhando destaque, uma vez

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Montoya Villegas, Julio César, Ángela Peña González, José María Satizábal Soto, and Felipe García-Vallejo. "Análisis sistémico IN SILICO de la expresión diferencial de genes localizados en la región crítica del síndrome de Down (DSCR) en el cerebro humano." Revista Med 20, no. 1 (2012): 15. http://dx.doi.org/10.18359/rmed.1197.

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<p>Uno de los retos más importantes de este siglo en la neurología genómica es construir mapas de expresión espacial de genes a lo largo de las distintas estructuras cerebrales con el fin de correlacionarlos con ciertas neuropatologías. Se analizaron los perfiles de transcripción de ocho genes HAS21 localizados en la región crítica del síndrome de Down en diferentes estructuras del cerebro humano normal. Se tomaron como referencia los valores de expresión de ocho genes HAS21/DSCR provenientes de experimentos de micromatrices de ADN de cerebros humanos normales y cuyos valores están dispo

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6

Liu, Yi Kun, Hui Min Tang, Yong Ping Wang, Yang Liu, and Xin Yuan Zhao. "Study of the Formation and Influence Factors of Silica Scale in ASP Flooding." Advanced Materials Research 868 (December 2013): 580–84. http://dx.doi.org/10.4028/www.scientific.net/amr.868.580.

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ASP Flooding has a better displacement efficiency, but there is still a serious problem of wells scaling. Researched on formation mechanism and influence factors of silica scale in ASP flooding with alkali, the formation of silica scale is mainly due to the alkali dissolution reaction of reservoir rock to produce the soluble silicon ions and form silica scale in formation conditions. Laboratory experiments simulated formation mineralization aqueous solution, analyzed the morphology of silica scale by scanning electron microscopy, and studied the role played by calcium, magnesium, aluminum ion,

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7

Sunder, Kirsten, and Hartmut Bracht. "Oxygen and Silicon Diffusion in Silica under Varying Ambient Conditions." Defect and Diffusion Forum 289-292 (April 2009): 531–39. http://dx.doi.org/10.4028/www.scientific.net/ddf.289-292.531.

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Diffusion of oxygen (O) in amorphous silicon dioxide (SiO2) was investigated by means of Si3N4/natSinatO2/28Si18O2/28Si isotope heterostructures grown by thermal oxidation and plasma enhanced chemical vapour deposition. Diffusion experiments with and without a silicon nitride (Si3N4) cap, which serves as diffusion barrier for the gasses in the ambient, were performed. In particular, we determined the impact of the ambient gas, of the thickness of the isotopically enriched SiO2 layer, and of the annealing time and temperature on diffusion. Our results are compared with data given in the literat

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8

Xu, Xue Feng, H. F. Chen, H. T. Ma, B. X. Ma, and Wei Peng. "The Mechanism of Polymer Particles in Silicon Wafer CMP." Materials Science Forum 626-627 (August 2009): 231–36. http://dx.doi.org/10.4028/www.scientific.net/msf.626-627.231.

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In order to increase the material removal rate of silicon wafer, composite abrasives slurry was used in CMP. Zeta potential of polymer particle was measured and interaction potential energy between silica abrasives and polymer particles in slurry were analyzed and calculated. Adsorptions between silica abrasives and polymer particles were observed with TEM. CMP experiments had been taken to analyze the effects of polishing parameters (the concentration of colloidal silica and polymer particle, the pressure and the speed of polishing) on the material removal rate. The mechanism of polymer parti

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9

Xu, Xue Feng, H. T. Ma, B. X. Ma, and Wei Peng. "Experimental Study on Parameter Optimization of Silicon Wafer CMP Using Composite Abrasives Slurry." Advanced Materials Research 69-70 (May 2009): 214–18. http://dx.doi.org/10.4028/www.scientific.net/amr.69-70.214.

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In order to increase the material removal rate of silicon wafer, composite abrasives slurry was used in CMP. The mechanism of interaction between silica abrasives and polymer particles was analyzed. Small silica abrasives were seen to attach onto the surface of the polymer particles. Composite abrasives slurry was obtained by adding polymer particles into single abrasive slurry. Three key parameters, the concentration of colloidal silica, the concentration of polymer particle and the speed of polishing, which influence the material removal rate of silicon wafer were analyzed by Taguchi method

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10

Czakoj, Tomáš, Michal Košťál, Evžen Losa, and Vojtěch Rypar. "NEW VALIDATION OF SI CROSS-SECTION USING SILICA SAND." EPJ Web of Conferences 247 (2021): 10001. http://dx.doi.org/10.1051/epjconf/202124710001.

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Silicon cross-sections, being important for a criticality safety of final spent fuel disposals, were recently reevaluated within the IAEA INDEN project. Similarly, the thermal Scattering Law matrix for silicon dioxide, which is also important for criticality safety, was also reevaluated in the ENDF/B-VIII.0 library. Due to these reasons, a series of validation experiments with silica sand were performed at the LR-0 reactor. This paper describes these validation experiments, which used two different amounts of silica sand placed in the core. The first part of validation was carried out as criti

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11

Aziz, Muhammad Hafiz Ab, Zaliman Sauli, Vithyacharan Retnasamy, Hussin Kamarudin, Wan Mokhdzani Wan Norhaimi, and Moganraj Palianysamy. "Comparison of Bond Strength of Silicon-Silica and Silicon-Pyrex in Wafer Bonding." Advanced Materials Research 1082 (December 2014): 416–19. http://dx.doi.org/10.4028/www.scientific.net/amr.1082.416.

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This paper reports on the bond strength comparison between silicon and different glass based materials via anodic bonding approach. The two types of glass based surface used were silica and pyrex. Silicon will be placed on the positive terminal and glass based materials will be placed on the negative terminal. Experiments were carried out using an in-house designed anodic bonder and the bond strength were measured using a bond strength tester. The anodic approach process was done in two sets which are before and after the cleaning process for each sample. For every set, there are three differe

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12

Mekapothula, Subbareddy, A. D. Dinga Wonanke, Matthew A. Addicoat, John D. Wallis, David J. Boocock, and Gareth W. V. Cave. "A supramolecular cavitand for selective chromatographic separation of peptides using LC-MS/MS: a combined in silico and experimental approach." New Journal of Chemistry 45, no. 1 (2021): 141–46. http://dx.doi.org/10.1039/d0nj03555f.

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The chromatographic separation of proteomic standards via a silica immobilized pillararene cavitand has been designed in silico using host–guest binding energy studies and realized experimentally to selectively interact with peptides.

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13

Arango-Santander, Santiago, Sidónio C. Freitas, Alejandro Pelaez-Vargas, and Claudia García. "Silica Sol-Gel Patterned Surfaces Based on Dip-Pen Nanolithography and Microstamping: A Comparison in Resolution and Throughput." Key Engineering Materials 720 (November 2016): 264–68. http://dx.doi.org/10.4028/www.scientific.net/kem.720.264.

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Fabrication of patterns on silicon and gold via Dip-Pen Nanolithography (DPN) using silica sol as ink and the combination of DPN, soft lithography, and silica sol-gel to transfer patterns from silicon and gold to stainless steel were assessed. In addition, a comparison in terms of throughput and resolution of both protocols was performed. Optical, scanning electron and atomic force microscopy were used to characterize the patterns. Silica sol showed high resolution but low throughput when used to pattern directly on gold and silicon using DPN. The combination of DPN, silica sol-gel and soft li

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14

Kavitha, N., M. Balasubramanian, and Y. Deval Vashistha. "Optimization of Processing Conditions on the Yield of Nano SiC Powder from Rice Husk." Advanced Materials Research 341-342 (September 2011): 103–7. http://dx.doi.org/10.4028/www.scientific.net/amr.341-342.103.

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Nanoparticles of silicon carbide were produced through direct pyrolysis of stoichiometerically balanced rice husk. Rice husk used in this study was treated with different type and amount of silica source in order to enhance the silica/carbon ratio and thereby increase the yield. The synthesis was carried out in argon atmosphere. To increase the yield, different process parameters were identified and experiments were conducted at various levels using Taguchi design. The process parameters optimized using this design include silica source, pyrolysis temperature, silica content and heating rate.

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15

Aziz, Muhammad Hafiz Ab, Zaliman Sauli, Vithyacharan Retnasamy, Hussin Kamarudin, Wan Mokhdzani Wan Norhaimi, and Moganraj Palianysamy. "Silicon Doped Boron and Glass Based Surface Bonding Strength Analysis via Anodic Bonding Approach." Advanced Materials Research 1082 (December 2014): 437–40. http://dx.doi.org/10.4028/www.scientific.net/amr.1082.437.

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In this paper, the bondability of silicon bonded to different glass based material was studied by analyzing the bond strength comparison using the anodic bonding approach. The three types of glass based surface used were silica, pyrex, and soda lime glass. Experiments were carried out using an in-house designed anodic bonder and the bond strength were measured using a bond strength tester. Silicon will be placed on the positive terminal while the glass based materials will be placed on the negative terminal. The anodic process was done in two sets which are before and after the cleaning proces

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16

Shen, Zih Yao, Zhong Chen Lu, Yun Chi Liu, and Maw Tien Lee. "Synthesis of Silica Materials from the Slurry Waste." Key Engineering Materials 765 (March 2018): 79–82. http://dx.doi.org/10.4028/www.scientific.net/kem.765.79.

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In solar energy industry, large amount of slurry wastes were produced during the wafer dicing process. The slurry waste contains silicon, silicon carbide and cutting oil. In this study, silicon in the slurry waste was treated with sodium hydroxide to produce a liquid mixture of the sodium silicate. The residue of the reaction was silicon carbide. The liquid mixture was separated to be a sodium silicate solution and used as a silica precursor for producing the silica powder and a hydrophobic silica aerogel by using the sol-gel method. The products were characterized by Fourier transformation in

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17

Aziz, Muhammad Hafiz Ab, Zaliman Sauli, Vithyacharan Retnasamy, Wan Mokhdzani Wan Norhaimi, Aaron Koay Terr Yeow, and Hussin Kamarudin. "Bond Strength Comparison between Silicon and Glass Based Surface Using Anodic Bonding." Applied Mechanics and Materials 680 (October 2014): 89–92. http://dx.doi.org/10.4028/www.scientific.net/amm.680.89.

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This paper reports on the bond strength comparison between silicon and different glass based materials via anodic bonding approach. The three types of glass based surface used were silica, pyrex, and soda lime glass. Silicon will be placed on the positive terminal and glass based materials will be placed on the negative terminal. Experiments were carried out using an in-house designed anodic bonder and the bond strength were measured using a bond strength tester. The anodic bonding approach process was done in two sets which are before and after the cleaning process for each sample. For every

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18

Li, Wei, Zhen Huang, Xiao Chu Wang, and Jian Peng Zhang. "Experimental Study on Basic Performance and Noise Characteristics of Rubber Cement Concrete with Silica Fume." Applied Mechanics and Materials 543-547 (March 2014): 4027–30. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.4027.

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This article has carried on the silicon ash content under the condition of 10%, and different rubber particle size and different dosage of silica fume rubber modified cement concrete in all kinds of performance testing, such as: the experiment research on compressive strength, splitting tensile strength, flexural strength and strong noise reduction performance. Experimental results show that silica fume can help improve the compression, splitting and flexural strength of rubber concrete, ratio of fracture and pressure and ratio of tension and compression of concrete are improved greatly after

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19

Saxena, Shruti, and S. P. Singh. "Efficacy of vitamin E and vitamin C against silica induced toxicity on male reproductive organs of albino rats." Journal of Applied and Natural Science 4, no. 1 (2012): 127–31. http://dx.doi.org/10.31018/jans.v4i1.236.

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Silica is one of the most documented workplace contaminants. Long-term occupational exposure to silica is associated with an increased risk in respiratory diseases such as silicosis, tuberculosis, chronic bronchitis, chronic obstructive pulmonary disease and lung cancer. The present study was carried out to observe the alteration in testosterone level & histopathological changes in the testis and epididymis after silica exposure, and to show whether therapeutic agents (Vitamin E + Vitamin C) used in study may provide recovery against exposure to silica. For investigations, silica was admin

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20

Takaya, Tatsuyoshi, Godai Miyaji, Issei Takahashi, Lukas Janos Richter, and Jürgen Ihlemann. "Fabrication of Periodic Nanostructures on Silicon Suboxide Films with Plasmonic Near-Field Ablation Induced by Low-Fluence Femtosecond Laser Pulses." Nanomaterials 10, no. 8 (2020): 1495. http://dx.doi.org/10.3390/nano10081495.

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Silicon suboxide (SiOx, x ≈ 1) is a substoichiometric silicon oxide with a large refractive index and optical absorption coefficient that oxidizes to silica (SiO2) by annealing in air at ~1000 °C. We demonstrate that nanostructures with a groove period of 200–330 nm can be formed in air on a silicon suboxide film with 800 nm, 100 fs, and 10 Hz laser pulses at a fluence an order of magnitude lower than that needed for glass materials such as fused silica and borosilicate glass. Experimental results show that high-density electrons can be produced with low-fluence femtosecond laser pulses, and p

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21

Cai, Zheng Peng, Xiao Wang, and Xiong Tong. "Study on Improving of the Iron Concentrate Grade Index by Centrifuge." Applied Mechanics and Materials 496-500 (January 2014): 512–15. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.512.

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In this study, the main aims were to iron-increasing and silicon-reduction of the iron concentrate by using centrifuge separating technology. Experimental studies were carried out on high-silica ferromagnetic iron concentrate in Dahongshan samples, which contain 50% of iron and 15% silica. Through the experiment, it chooses SLon1600 to iron-increasing and silicon-reduction of the iron concentrate. The optimum condition is pulp density of 20%~25%, feed speed of 1.99t/h, rinse water of 6.4t/h and flushing water of 10.22t/h. The iron concentrate which the grade of Fe is 62.36% and the recovery of

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22

Eštoková, Adriana, Martina Kovalcikova, and Alena Luptáková. "Deterioration of Cement Composites with Silica Fume Addition due to Chemical and Biogenic Corrosion Processes." Solid State Phenomena 227 (January 2015): 190–93. http://dx.doi.org/10.4028/www.scientific.net/ssp.227.190.

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The paper is aimed at comparative study of resistance of Portland cement composites with addition of silica fume as durability increasing factor in various aggressive environments (sulphuric acid with pH 4, the medium of activated bacteria and the cultivating medium without bacteria) during 150 days under model laboratory conditions. Experimental studies confirmed: the leaching of silicon ions calculated to 1 g of concrete sample affected with bacteriaAcidithiobacillusthiooxidanswas 2.5 times lower (31.78 mg/g of sample) for concrete sample with silica fume addition comparing to concrete sampl

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23

Zhu, Xun Guo, and Kai Cao. "The Inhibition Studying of Many-Doped Mineral Admixture for Concrete Alkali Silicate Reaction." Advanced Materials Research 690-693 (May 2013): 771–75. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.771.

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In the theoretical basic of only mixing the pulverized fuel ash, the slag or the silicon ash experiments, carrying on concrete alkali-aggregate reaction experiment separately that double-doped the pulverized fuel ash and the silicon ash, double-doped the pulverized fuel ash and the slag, double-doped the slag and the silicon ash, three-mixed the pulverized fuel ash, the slag and the silicon ash. The result indicated the effect of mixing pulverized fuel ash and the silicon ash is better than the mixing silicon ash and slag or pulverized fuel ash and slag. Besides three-mixed the pulverized fuel

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24

Fu, Lipei, Jiahui Zhu, Weiqiu Huang, et al. "Preparation of Nano-Porous Carbon-Silica Composites and Its Adsorption Capacity to Volatile Organic Compounds." Processes 8, no. 3 (2020): 372. http://dx.doi.org/10.3390/pr8030372.

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Carbon-silica composites with nanoporous structures were synthesized for the adsorption of volatile organic compounds (VOCs), taking tetraethyl orthosilicate (TEOS) as the silicon source and activated carbon powder as the carbon source. The preparation conditions were as follows: the pH of the reaction system was 5.5, the hydrophobic modification time was 50 h, and the dosage of activated carbon was 2 wt%. Infrared spectrum analysis showed that the activated carbon was dispersed in the pores of aerogel to form the carbon-silica composites material. The static adsorption experiments, dynamic ad

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Lin, Tianying, Ze Chen, Xiaopei Zhang, He Li, Xiaoping Liu, and Haibin Lü. "Experimental observation of topologically protected defect states in silicon waveguide arrays." Chinese Optics Letters 18, no. 5 (2020): 051301. http://dx.doi.org/10.3788/col202018.051301.

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Li, Yun Feng, Jian Zhu, and Li Xu. "Influence of Silica Fume on Mechanical Property of High Performance Concrete." Applied Mechanics and Materials 584-586 (July 2014): 1482–85. http://dx.doi.org/10.4028/www.scientific.net/amm.584-586.1482.

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Silica fume is a by-product in the production of ferrosilicon and industrial silicon material. With the ultrafine physical structure of and high volcanic ash activity, silica fume is more important admixture in concrete improving the strength and durability of concrete, and it is widely used in high performance concrete engineering. Influence of silica fume on mechanical property of high performance concrete is investigated in this paper. Experimental results show that the strength of concrete increases significantly when suitable dosages of admixtures is applied.

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Li, Wei, Zhen Huang, Xiao Chu Wang, and Jian Peng Zhang. "Study on Tension and Compression Ratio and Discount Ratio of Rubber Modified Silica Fume Concrete." Applied Mechanics and Materials 670-671 (October 2014): 396–400. http://dx.doi.org/10.4028/www.scientific.net/amm.670-671.396.

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This paper conducted all kinds of performance testing of different rubber particle size and different dosage of silica fume rubber modified cement concrete under the condition of 10% the silicon ash content, such as: analysis research of compressive strength, splitting tensile strength, flexural strength, and pull off the pressure ratio and pressure ratio. Experimental results show that silica fume can improve rubber concrete compressive strength, splitting, bending strength, the folding ratio, adding silica fume concrete fracture pressure ratio and compression ratio are improved; the silica f

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Sun, Ming, Bai Mei Tan, Xin Huan Niu, et al. "Defectivity Reduction in the Silicon Tough Polishing with Polyamine and Nonions Surfactant Additives." Advanced Materials Research 396-398 (November 2011): 390–94. http://dx.doi.org/10.4028/www.scientific.net/amr.396-398.390.

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The effects of the polyamine chelating agent and nonions surfactant additive on the surface defectivity reduction in the final polishing of the mono silicon wafers were investigated using high-purity nano colloidal silica based organic alkaline slurry. Experimental results reveal that the chemical enhanced silicon final polishing slurry containing FA/O polyamine chelating agent and FA/O nonions surfactant changed the chemistry character of silicon surface, can realize the chemical uniform etch the surface areas with defects and defect-free area, deeply lower the surface microroughness of silic

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Li, Ning, Jinfu Ding, Liguang Hu, Xiao Wang, Lirong Lu, and Jianmeng Huang. "Preparation, Microstructure and Compressive Properties of Silicone GEL/SiC Composites for Elastic Abrasive." Advanced Composites Letters 27, no. 3 (2018): 096369351802700. http://dx.doi.org/10.1177/096369351802700305.

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An elastic abrasive tool based on micropore silica gel was designed and reinforced with silicon carbide (SiC) particle. The abrasive internal structure presents porous chain network structure, and the enhanced particles uniformly distributed in the matrix. The compression performance of modified composites is nonlinear increasing. The experimental results show that the accumulating energy of the self microporous structure is easy to overcome the internal friction in a certain deformation quantity of the materials. When the deformation quantity is large enough, the microporous structure and the

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Pinzón-Reyes, Efraín Hernando, Daniel Alfonso Sierra-Bueno, Miguel Orlando Suarez-Barrera, Nohora Juliana Rueda-Forero, Sebastián Abaunza-Villamizar, and Paola Rondón-Villareal. "Generation of Cry11 Variants of Bacillus thuringiensis by Heuristic Computational Modeling." Evolutionary Bioinformatics 16 (January 2020): 117693432092468. http://dx.doi.org/10.1177/1176934320924681.

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Directed evolution methods mimic in vitro Darwinian evolution, inducing random mutations and selective pressure in genes to obtain proteins with enhanced characteristics. These techniques are developed using trial-and-error testing at an experimental level with a high degree of uncertainty. Therefore, in silico modeling of directed evolution is required to support experimental assays. Several in silico approaches have reproduced directed evolution, using statistical, thermodynamic, and kinetic models in an attempt to recreate experimental conditions. Likewise, optimization techniques using heu

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Tolpekina, T. V., and B. N. J. Persson. "Adhesion and Friction for Three Tire Tread Compounds." Lubricants 7, no. 3 (2019): 20. http://dx.doi.org/10.3390/lubricants7030020.

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We study the adhesion and friction for three tire tread rubber compounds. The adhesion study is for a smooth silica glass ball in contact with smooth sheets of the rubber in dry condition and in water. The friction studies are for rubber sliding on smooth glass, concrete, and asphalt road surfaces. We have performed the Leonardo da Vinci-type friction experiments and experiments using a linear friction tester. On the asphalt road, we also performed vehicle breaking distance measurements. The linear and non-linear viscoelastic properties of the rubber compounds were measured in shear and tensio

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Feng, Rui, An Ping Qiu, Qin Shi, and Yan Su. "A Theoretical and Experimental Study on Temperature Dependent Characteristics of Silicon MEMS Gyroscope Drive Mode." Advanced Materials Research 403-408 (November 2011): 4237–43. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.4237.

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The prototype of the silicon micro gyroscope is introduced. Temperature is the key factor that affects the performance of the gyroscope. In this paper, temperature dependent characteristics of silicon micro gyroscope drive mode is analyzed. The theoretical results show that temperature coefficient of the Young’s modulus is the most critical factor that affects temperature characteristics of the silicon micro gyroscope’s drive modal frequency and the frequency is proportional to the temperature. The results are verified by finite element simulations. The silicon micro gyroscopes are experimente

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Heltzel, Alex J., Senthil Theppakuttai, John R. Howell, and Shaochen Chen. "Analytical and Experimental Investigation of Laser-Microsphere Interaction for Nanoscale Surface Modification." Journal of Heat Transfer 127, no. 11 (2005): 1231–35. http://dx.doi.org/10.1115/1.2039110.

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An analytical and experimental investigation on the features created on silicon by the irradiation of microspheres on the substrate surface with a pulsed laser is presented. Silica microspheres of 1.76μm diameter are deposited on the silicon substrate and are irradiated with a pulsed Nd:YAG laser of wavelength 532nm. An analytical model based on Mie theory is developed, which includes all evanescent terms and does not rely on either far-field or size-parameter approximations. The predicted intensity distributions on the substrate indicate a strong near-field enhancement confined to a very smal

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Szulc, W., B. Rutkowska, M. Hoch, E. Spychaj-Fabisiak, and B. Murawska. "Exchangeable silicon content of soil in a long-term fertilization experiment." Plant, Soil and Environment 61, No. 10 (2016): 458–61. http://dx.doi.org/10.17221/438/2015-pse.

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Moretti, Sabrina. "In Silico Experiments in Scientific Papers on Molecular Biology." Science & Technology Studies 24, no. 2 (2011): 23–42. http://dx.doi.org/10.23987/sts.55262.

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This article explores the role of the so-called in silico experiments used in molecular biology. It is based on the analysis of some papers that present scientific applications which rely on in silico experiments. By means of this study I found two basic ways of viewing them. According to the first view, the in silico experiment is a computer program that realizes some specific operations: it constitutes some particular experimental conditions, which allow us to investigate biological phenomena, and which complement those present in in vivo and in vitro experiments. According to the second vie

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Govindan, Venkatesan, Bharat P. Kapgate, and Rajkumar K. K. "EXPERIMENTAL INVESTIGATION ON NATURAL FIBER ALONG WITH SILICA FUME IN CONVENTIONAL CONCRETE." SOUTH ASIAN JOURNAL OF ENGINEERING AND TECHNOLOGY 9, no. 1 (2019): 1–13. http://dx.doi.org/10.26524/sat1.

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G, Venkatesan, Bharat P. Kapgate, and Rajkumar K. "EXPERIMENTAL INVESTIGATION ON NATURAL FIBER ALONG WITH SILICA FUME IN CONVENTIONAL CONCRETE." South Asian Journal of Engineering and Technology 9, no. 1 (2019): 1–9. http://dx.doi.org/10.26524/sat2.

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Wang, Yu Fen, Lan Jian Nie, Zai Kui Xiang, and Xue Fu Song. "Preparation of High Purity Low Hydroxyl Synthetic Fused Silica Glass." Advanced Materials Research 287-290 (July 2011): 276–80. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.276.

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High purity low hydroxyl synthetic fused silica glass was prepared by electric melting synthetic crystallized silica powders which were made by the process of hydrolysis, dehydration and calcination of high purity silicon tetrachloride obtained from the by-product of polysilicon production. The structure morphology and hydroxyl content of synthetic silica powders were characterized by XRD and IR, respectively. The experimental results suggest that the silica powders dried at 120°C are amorphous, and the amorphous silica powders are gradually transformed to alpha-cristobalite after sintered in

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McMillin, Brian K., Pratim Biswas, and Michael R. Zachariah. "In situ characterization of vapor phase growth of iron oxide-silica nanocomposites: Part I. 2-D planar laser-induced fluorescence and Mie imaging." Journal of Materials Research 11, no. 6 (1996): 1552–61. http://dx.doi.org/10.1557/jmr.1996.0194.

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Planar laser-based imaging measurements of fluorescence and particle scattering have been obtained during flame synthesis of iron-oxide/silica superparamagnetic nanocomposites. The theory and application of laser-induced fluorescence, the spectroscopy of FeO(g), and the experimental approach for measurement of gas phase precursors to particle formation are discussed. The results show that the vapor phase FeO concentration rapidly rises at the primary reaction front of the flame and is very sensitive to the amount of precursor added, suggesting nucleation-controlled particle growth. The FeO vap

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Sandeep Kauthsa Sharma, Maganti, S. Umadevi, Yerra Sai Sampath, et al. "Mechanical Behavior of Silica Fume Concrete Filled with Steel Tubular Composite Column." Advances in Materials Science and Engineering 2021 (July 29, 2021): 1–9. http://dx.doi.org/10.1155/2021/3632991.

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Recycling or utilization of industrial waste is becoming more popular as people become more environmentally conscious. Silica fume is a by-product of the smelting process in the silicon and ferrosilicon industries. This study examines the mechanical behavior of steel tubular composite column filled with conventional concrete and silica fume concrete experimentally under axial compressive loading. For the study, variability in steel tube thickness and column height with a constant diameter are considered. To explore the influence of silica fume in concrete, microstructural analyses are carried

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Liang, Ji Feng, Chao Zhang, and Xin Yu Fang Wang. "Experimental Study of Sulfate Attack Resistance Performance on Cement Concrete Pavement." Applied Mechanics and Materials 505-506 (January 2014): 270–73. http://dx.doi.org/10.4028/www.scientific.net/amm.505-506.270.

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Airport concrete pavement in high latitude northwest area attacked by sulfate of different extent, which influence early strength and ultimate strength of cement concrete. In this paper, the double doped silica fume and fly ash concrete have been made long-term immersion test research. From the mass loss rate, compressive strength and flexural strength, effect on the corrosion resistance are studied with fly ash, silicon ash adding in a composite Portland cement. Methods to improve the performance of sulfate attack resistance are obtained by experiment.

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Wu, Haolin, Jie Yang, Haibiao Chen, and Feng Pan. "Revealing the nanodomain structure of silicon oxycarbide via preferential etching and pore analysis." Functional Materials Letters 09, no. 03 (2016): 1650043. http://dx.doi.org/10.1142/s1793604716500430.

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Preferentially etching either carbon or silica from silicon oxycarbide (SiOC) created a porous network as an inverse image of the removed phase. The porous structure was analyzed by gas adsorption, and the experimental results verified the nanodomain structure of SiOC. This work demonstrated a novel approach for analyzing materials containing nanocomposite structures.

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Sántha, Miklós. "Biologia futura: animal testing in drug development—the past, the present and the future." Biologia Futura 71, no. 4 (2020): 443–52. http://dx.doi.org/10.1007/s42977-020-00050-4.

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AbstractAnimal experiments have served to improve our knowledge on diseases and treatment approaches since ancient times. Today, animal experiments are widely used in medical, biomedical and veterinary research, and are essential means of drug development and preclinical testing, including toxicology and safety studies. Recently, great efforts have been made to replace animal experiments with in vitro organoid culture methods and in silico predictions, in agreement with the 3R strategy to “reduce, refine and replace” animals in experimental testing, as outlined by the European Commission. Here

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Luo, Biwei, Pengfei Li, Yan Li, et al. "Feasibility of fly ash as fluxing agent in mid- and low-grade phosphate rock carbothermal reduction and its reaction kinetics." Green Processing and Synthesis 10, no. 1 (2021): 157–68. http://dx.doi.org/10.1515/gps-2021-0008.

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Abstract The feasibility of industrial waste fly ash as an alternative fluxing agent for silica in carbothermal reduction of medium-low-grade phosphate ore was studied in this paper. With a series of single-factor experiments, the reduction rate of phosphate rock under different reaction temperature, reaction time, particle size, carbon excess coefficient, and silicon–calcium molar ratio was investigated with silica and fly ash as fluxing agents. Higher reduction rates were obtained with fly ash fluxing instead of silica. The optimal conditions were derived as: reaction temperature 1,300°C, re

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K, Rahul, and Andavan S. "Experimental Study on Partial Replacement of Cement with Nano Silica in the Concrete." International Journal of Trend in Scientific Research and Development Volume-2, Issue-1 (2017): 797–803. http://dx.doi.org/10.31142/ijtsrd7032.

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Giampaolo, Ciriaco, Carlo Gorgoni, Annibale Mottana, Fabrizio Pagani, and Gianpaolo Sighinolfi. "Experimental water-rock interaction: silica geothermometers in the temperature range 100-350°C." European Journal of Mineralogy 4, no. 1 (1992): 53–66. http://dx.doi.org/10.1127/ejm/4/1/0053.

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Saxena, Shruti, and S. P. Singh. "Influence of silica intoxication on female reproductive organs with therapeutic agents vitamin E and vitamin C." Journal of Applied and Natural Science 3, no. 1 (2011): 82–85. http://dx.doi.org/10.31018/jans.v3i1.159.

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The aim of the present study was to observe the alteration of blood biochemical and histopathological variables after silica exposure, and also to show whether therapeutic agents (Vitamin E + Vitamin C) used in study may provide recovery against exposure to silica. In this study, silica was administered as silicon dioxide at a dose of 40 mg/kg for 28 days to produce toxic effect. Recovery pattern was evaluated by Vitamin E + vitamin C (50 mg/kg, ip + 100 mg/kg, po), The present study showed alterations in the activities of oestrogen and LH were significantly decreased in experimental rats afte

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Bertermann, Rüdiger, and Reinhold Tacke. "Solid-State 29Si VACP/MAS NMR Studies of Silicon-Accumulating Plants: Structural Characterization of Biosilica Deposits." Zeitschrift für Naturforschung B 55, no. 6 (2000): 459–61. http://dx.doi.org/10.1515/znb-2000-0602.

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A series of silicon-accumulating plants [different Equisetum (horse tail) species, Echium vulgare, and Symphytum officinale] were studied by solid-state 29Si NMR experiments. For this purpose, selected parts of these plants were freeze-dried and then investigated by solid-state 29Si VACP/MAS NMR spectroscopy. The 29Si NMR spectra of these plants are quite similar and exhibit the typical pattern characteristic of polysilicic acid (amorphous silica).

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Kleiber, Tomasz, Klaudia Borowiak, Tomasz Kosiada, Włodzimierz Breś, and Bartosz Ławniczak. "Application of selenium and silicon to alleviate short-term drought stress in French marigold (Tagetes patula L.) as a model plant species." Open Chemistry 18, no. 1 (2020): 1468–80. http://dx.doi.org/10.1515/chem-2020-0183.

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AbstractSelenium (Se) and silicon (Si) are the beneficial elements that may significantly modify plants’ tolerance to various types of biotic and abiotic stress. They may be particularly important due to the current climate changes. The aim of model experiments was to assess how selenium and silicon could alleviate short-term drought stress in French marigold (Tagetes patula L. “Pascal”). Tagetes plant species are economically important annual plants and are also very popular decorative flowering species in city parks due to its beautiful colored flowers and resistance on drought stress. Silic

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Geris, L., R. Schugart, and H. Van Oosterwyck. "In silico design of treatment strategies in wound healing and bone fracture healing." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368, no. 1920 (2010): 2683–706. http://dx.doi.org/10.1098/rsta.2010.0056.

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Wound and bone fracture healing are natural repair processes initiated by trauma. Over the last decade, many mathematical models have been established to investigate the healing processes in silico , in addition to ongoing experimental work. In recent days, the focus of the mathematical models has shifted from simulation of the healing process towards simulation of the impaired healing process and the in silico design of treatment strategies. This review describes the most important causes of failure of the wound and bone fracture healing processes and the experimental models and methods used

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