A. Rama Ch,ra Murthy¹, G.S. Palani¹, Nagesh R. Iyer¹

Structural Durability & Health Monitoring, Vol.1, No.3, pp. 203-214, 2005, DOI:10.3970/sdhm.2005.001.203

Abstract This paper presents an improved Wheeler residual stress model for remaining life prediction of the cracked structural components under variable amplitude loading. The improvement to the Wheeler residual stress model is in two folds. One is expressions for the shaping exponent, which are generally obtained through experiments. Another is calculation of effective plastic zone size to incorporate the sequent effects under tensile-compressive overloading. The remaining life prediction has been carried out by employing the linear elastic fracture mechanics (LEFM) principles. Studies on remaining life prediction of cracked plate panels subjected to tensile-compressive overloading have been carried out for validating the… More >

D.Taylor¹

Structural Durability & Health Monitoring, Vol.1, No.2, pp. 145-154, 2005, DOI:10.3970/sdhm.2005.001.145

Abstract The Theory of Critical Distances (TCD) is a general term for any of those methods of analysis which use continuum mechanics in conjunction with a characteristic material length constant, L. This paper discusses the use of two simple versions of the TCD: a point-stress approach which we call the Point Method (PM) and a line-average approach: the Line Method (LM). It is shown that they are able to predict the onset of unstable, brittle fracture in specimens of metallic materials containing notches of varying root radii. The approach was successful whatever the micromechanism of crack growth (cleavage or ductile tearing);… More >

Giselle de Moura CARPES, Viviane Dal-Souto FRESCURA^*, Solange Bosio TEDESCO, Antonio Carlos Ferreira DA SILVA, Thais Scotti do CANTO-DOROW

BIOCELL, Vol.38, No.1, pp. 7-10, 2014, DOI:10.32604/biocell.2014.38.007

Abstract Field collected roots of four populations of Sida rhombifolia were used for preparing aqueous decoctions at two concentrations: 4g/L; and 16g/L. Afterwards, we used three groups of six onion (Allium cepa) bulbs for testing each population. Slides were made with all bulbs through the smashing technique. Cells in all phases of the cell cycle of A. cepa were analyzed. The mitotic index (% of cells in mitosis) was calculated, and the statistical analysis through the χ2 test was carried out at 5% probability. The results showed that the aqueous extracts of S. rhombifolia have antiproliferative activity at high concentrations. Practically… More >

Gonzalo RODRÍGUEZ-LOMBARDI¹, Luciana REYNA², María Susana VITALI¹, Susana GENTI-RAIMONDI²

BIOCELL, Vol.39, No.2-3, pp. 15-24, 2015, DOI:10.32604/biocell.2015.39.015

Abstract A competitive internal control (IC) adapted to RT-PCR in-house assay was developed for HCV RNA detection in human pooled plasma. Also, it was applied in a multiplex RT-PCR for the HIV-1 and HCV RNA screening in human pooled plasma and plasma-derived products. A 258-bp PCR product from the 5´noncoding region of HCV genome was obtained. A competitive IC template was constructed by inserting a 52-bp double strand sequence into the NheI site of the 258-bp amplicon. This sequence was cloned and the obtained plasmid was used to generate a synthetic RNA. The IC/RNA was incorporated in in-house HCV and/or HIV… More >

Yanzhen Wang¹, Xuefeng Yan^1,*

CMES-Computer Modeling in Engineering & Sciences, Vol.121, No.1, pp. 123-144, 2019, DOI:10.32604/cmes.2019.07052

Abstract A single model cannot satisfy the high-precision prediction requirements given the high nonlinearity between variables. By contrast, ensemble models can effectively solve this problem. Three key factors for improving the accuracy of ensemble models are namely the high accuracy of a submodel, the diversity between subsample sets and the optimal ensemble method. This study presents an improved ensemble modeling method to improve the prediction precision and generalization capability of the model. Our proposed method first uses a bagging algorithm to generate multiple subsample sets. Second, an indicator vector is defined to describe these subsample sets. Third, subsample sets are selected… More >

Yuerong Wang¹, Jianping Jing^1,2,3,*, Changmin Chen¹, Sheng Xiong¹

CMES-Computer Modeling in Engineering & Sciences, Vol.121, No.1, pp. 1-22, 2019, DOI:10.32604/cmes.2019.06158

Abstract Fluidelastic instability is destructive in tube bundles subjected to cross flow. Flow channel model proposed by Leaver and Weaver is well used for modeling this problem. However, as the tube motion is supposed to be harmonic, it may not simulate the general dynamic behaviors of tubes. To improve this, a model with arbitrary tube motion is proposed by Hassan and Hayder. While, due to involving in the time delay term, the stability problem cannot be solved by the eigenvalue scheme, and time domain responses of the tube have to be obtained to assess the instability threshold. To overcome this weakness,… More >

Analia G. Karadayian¹, Juanita Bustamante², Silvia Lores-Arnaiz^{1, *}

BIOCELL, Vol.40, No.1, pp. 31-34, 2016, DOI:10.32604/biocell.2016.40.031

Abstract Alcohol hangover (AH) is defined as the temporary state after alcohol binge-like drinking, starting when EtOH is absent in plasma. Results from our laboratory have shown behavioral impairments and mitochondrial dysfunction in an experimental model of AH in mice. Our model consisted in a single i.p. injection of EtOH (3.8 g/kg BW) or saline solution in male and female mice, sacrificing the animals 6 hours after injection. Motor and affective behavior together with mitochondrial function and free radical production were evaluated in brain cortex and cerebellum during AH. Results showed that hangover animals exhibited a significant reduction in neuromuscular coordination,… More >

Tang Y¹, SS Jin²

Phyton-International Journal of Experimental Botany, Vol.87, pp. 280-285, 2018, DOI:10.32604/phyton.2018.87.280

Abstract Persistent seed banks have been detected in the Horqin Sandy Land, China using experimental methods. In this study, we used seed traits (i.e. seed mass and seed shape) to predict the persistence of seed banks using the random forest algorithm. The results showed that the mean decrease in accuracy for seed mass and seed shape was 18.26 and 9.90, respectively, suggesting that seed mass was a better predictor than seed shape. With increasing seed mass, the log of P (where P is the ratio of the number of votes selecting existence of a persistent seed bank to the number of… More >

Zepeda-Guzmán S¹, M Gómez-Romero², C Sosa-Aguirre¹, J Villegas¹

Phyton-International Journal of Experimental Botany, Vol.87, pp. 183-190, 2018, DOI:10.32604/phyton.2018.87.183

Abstract Changes in root architecture are a strategy used by plants to explore the soil for available resources. The presence of beneficial microorganisms in the rhizosphere as well as plant growth regulators can cause changes in root development and promote the availability of water and nutrients. The effect of microorganisms or growth regulators on plant growth has been tested, but little is known about the effect they have on the architecture of the root of Hordeum vulgare L. Therefore the objective of this study was to evaluate the effect of the application of Rhizoglomus intraradices, Azospirillum brasilense, quercetin and epibrassinolide, alone… More >

Rodrigues Costa A^1,2, PS Pereira³, MK Alves de Sousa^1,2, FC Rodrigues⁵, VR Duarte Mendes¹, KR Rodrigues Lima¹, L Marivando Barros^1,4, CM Rocha Sousa¹, MS Alcântara¹, AB Leite Cavalcante⁴, R Cruz Macedo⁵, JP Kamdem³, AE Duarte^1,2

Phyton-International Journal of Experimental Botany, Vol.87, pp. 79-86, 2018, DOI:10.32604/phyton.2018.87.079

Abstract The species Rhaphiodon echinus, known as betonica or creeping mint, is considered an infesting plant species, typical of the caatinga biome. Morphoanatomy is a very important tool to study the structure of plants, both its external and internal morphology, opening the knowledge about the production of secondary metabolites. These compounds are of great importance for scientific research, which may present themselves as the best antioxidants. Taking into account a lack of data in the literature on the essential oil of R. echinus, this study aimed to demonstrate its antioxidant activity and toxicity. In order to test this hypothesis, tests were… More >