Corrigendum to “On the stability of preferences and attitudes before and after experiencing an electric vehicle” [Transport. Res. Part D 25C (2013) 24–32]

The issue of strong flux pinning is crucial to the further development of high critical current density Bi-Sr-Ca-Cu-O (BSCCO) superconductors in conductor-like applications, yet the pinning mechanisms are still much debated. Anomalous peaks in the M-H (magnetization vs. magnetic field) loops are commonly observed in Bi2Sr2CaCu2Oy (Bi-2212) single crystals. Oxygen vacancies may be effective flux pinning centers in BSCCO, as has been found in YBCO. However, it has also been proposed that basal-plane dislocation networks also act as effective pinning centers. Yang et al. proposed that the characteristic scale of the basal-plane dislocation networksmay strongly depend on oxygen content and the anomalous peak in the M-H loop at ˜20-30K may be due tothe flux pinning of decoupled two-dimensional pancake vortices by the dislocation networks. In light of this, we have performed an insitu observation on the dislocation networks precisely at the same region before and after annealing in air, vacuumand oxygen, in order to verify whether the dislocation networks change with varying oxygen content Inall cases, we have not found any noticeable changes in dislocation structure, regardless of the drastic changes in Tc and the anomalous magnetization. Therefore, it does not appear that the anomalous peak in the M-H loops is controlled by the basal-plane dislocation networks.

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Sorbitol enhances the physicochemical stability of B12 vitamers

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000578 ◽

2020 ◽

Vol 90 (5-6) ◽

pp. 439-447 ◽

Cited By ~ 1

Author(s):

Andrew Hadinata Lie ◽

Maria V Chandra-Hioe ◽

Jayashree Arcot

Keyword(s):

Ascorbic Acid ◽

Uv Light ◽

Heat Exposure ◽

Water Soluble ◽

Uv Exposure ◽

Physicochemical Stability ◽

Before And After ◽

The Stability

Abstract. The stability of B12 vitamers is affected by interaction with other water-soluble vitamins, UV light, heat, and pH. This study compared the degradation losses in cyanocobalamin, hydroxocobalamin and methylcobalamin due to the physicochemical exposure before and after the addition of sorbitol. The degradation losses of cyanocobalamin in the presence of increasing concentrations of thiamin and niacin ranged between 6%-13% and added sorbitol significantly prevented the loss of cyanocobalamin (p<0.05). Hydroxocobalamin and methylcobalamin exhibited degradation losses ranging from 24%–26% and 48%–76%, respectively; added sorbitol significantly minimised the loss to 10% and 20%, respectively (p < 0.05). Methylcobalamin was the most susceptible to degradation when co-existing with ascorbic acid, followed by hydroxocobalamin and cyanocobalamin. The presence of ascorbic acid caused the greatest degradation loss in methylcobalamin (70%-76%), which was minimised to 16% with added sorbitol (p < 0.05). Heat exposure (100 °C, 60 minutes) caused a greater loss of cyanocobalamin (38%) than UV exposure (4%). However, degradation losses in hydroxocobalamin and methylcobalamin due to UV and heat exposures were comparable (>30%). At pH 3, methylcobalamin was the most unstable showing 79% degradation loss, which was down to 12% after sorbitol was added (p < 0.05). The losses of cyanocobalamin at pH 3 and pH 9 (~15%) were prevented by adding sorbitol. Addition of sorbitol to hydroxocobalamin at pH 3 and pH 9 reduced the loss by only 6%. The results showed that cyanocobalamin was the most stable, followed by hydroxocobalamin and methylcobalamin. Added sorbitol was sufficient to significantly enhance the stability of cobalamins against degradative agents and conditions.

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Investigation of Hydrothermally Stressed Silicone Rubber/Silica Micro and Nanocomposite for the Coating High Voltage Insulation Applications

Materials ◽

10.3390/ma14133567 ◽

2021 ◽

Vol 14 (13) ◽

pp. 3567

Author(s):

Faiza Faiza ◽

Abraiz Khattak ◽

Safi Ullah Butt ◽

Kashif Imran ◽

Abasin Ulasyar ◽

...

Keyword(s):

Silicone Rubber ◽

Structural Changes ◽

Polymer Chains ◽

Hydrothermal Conditions ◽

Silica Filler ◽

Before And After ◽

Aging Conditions ◽

The Stability ◽

Micro Silica ◽

Applied Stresses

Silicone rubber is a promising insulating material that has been performing well for different insulating and dielectric applications. However, in outdoor applications, environmental stresses cause structural and surface degradations that diminish its insulating properties. This effect of degradation can be reduced with the addition of a suitable filler to the polymer chains. For the investigation of structural changes and hydrophobicity four different systems were fabricated, including neat silicone rubber, a micro composite (with 15% micro-silica filler), and nanocomposites (with 2.5% and 5% nanosilica filler) by subjecting them to various hydrothermal conditions. In general, remarkable results were obtained by the addition of fillers. However, nanocomposites showed the best resistance against the applied stresses. In comparison to neat silicone rubber, the stability of the structure and hydrophobic behavior was better for micro-silica, which was further enhanced in the case of nanocomposites. The inclusion of 5% nanosilica showed the best results before and after applying aging conditions.

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Open Loop Stability on Hybrid Synchronous Motor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.121-122.860 ◽

2010 ◽

Vol 121-122 ◽

pp. 860-865

Author(s):

Xue Zhen Chen

Keyword(s):

Permanent Magnet ◽

Harmonic Distortion ◽

Synchronous Motor ◽

Open Loop ◽

Mathematics Model ◽

Distortion Factor ◽

Part D ◽

Fraction Length ◽

The Stability ◽

Loop Stability

This paper searched open loop stability on hybrid synchronous motor which is made of a permanent magnet part and a reluctance part, there is important influence for the ratio k, the fraction length of the permanent magnet part, and the displaced angle α, the between the two part d-axis, the small-signal mathematics model was derived based on d-q reference frame, and optimized the appropriate k and α value considering the stability and the harmonic distortion factor (THD), The simulation results show that the model is correct.

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Regulation of Laijiapu Waterway in Jingjiang Reach

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.501-504.2001 ◽

2014 ◽

Vol 501-504 ◽

pp. 2001-2006

Author(s):

Ya Liu ◽

Li Zheng ◽

Cheng Tao Huang ◽

Zhao Biao Huang ◽

Lin Liu

Keyword(s):

Yangtze River ◽

Three Gorges Reservoir ◽

Three Gorges ◽

The Yangtze River ◽

Point Bar ◽

The Three Gorges Reservoir ◽

The Three Gorges ◽

Before And After ◽

The Stability ◽

Channel Bar

After impoundment of the Three Gorges Reservoir, Jingjiang reach, in the middle of the Yangtze River, has gradually shown a series of atypical fluvial features, adversely affecting the maintenance of waterways. Citing the Laijiapu Waterway, a meandering segment in the lower Jingjiang for example, this paper compared the fluvial features of the channel before and after the impoundment, summed up its navigation-obstructing features, and proposed guarding the point bar on the convex bank and channel bar in the widening section as a key to maintaining the stability of the navigation channels.

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Bifurcation and stability of resonance of electric vehicle powertrain: Focus on the influence of electromagnetic parameters

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1177/09544070211045054 ◽

2021 ◽

pp. 095440702110450

Author(s):

Qingzhen Han ◽

Shiqin Niu ◽

Lei He

Keyword(s):

Electric Vehicle ◽

Electromechanical Coupling ◽

Equilibrium Points ◽

Resonance Curve ◽

Drive Shaft ◽

Electromagnetic Parameters ◽

Stability And Bifurcation ◽

Fold Bifurcation ◽

The Stability ◽

Vehicle Powertrain

The influence of the electromagnetic parameters on the torsional dynamics of the electric vehicle powertrain is studied by considering the electromechanical coupling effect. By adding the electromagnetic torque on the drive side, the powertrain is simplified as nonlinear drive-shaft model. The number, stability, and bifurcation conditions of the equilibrium points of the nonlinear drive-shaft model are deduced. Based on the averaged equations and the amplitude-frequency response equation, the stability and bifurcation conditions, such as fold bifurcation and Hopf bifurcation, of the resonance curve are discussed. The influence of electromagnetic parameters on the torsional dynamics is studied by simulation. It is shown that with the change of the parameters, the number as well as the stability of the equilibrium points may be changed which is affected by fold bifurcation. It is also shown that the resonance curve may lose its stability when fold bifurcation happens. By limiting the parameters in the region without fold bifurcation, the unstable dynamics of the resonance curve can be controlled.

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Efficacy of Selective Grinding Guided by an Occlusal Splint in Management of Myofascial Pain: A Prospective Clinical Trial

The Open Dentistry Journal ◽

10.2174/1874210601711010301 ◽

2017 ◽

Vol 11 (1) ◽

pp. 301-311

Author(s):

Felipe J. Fernández-González ◽

Jorge Cabero-López ◽

Aritza Brizuela ◽

Ivan Suazo ◽

Esteban Pérez-Pevida ◽

...

Keyword(s):

Temporomandibular Joint ◽

Myofascial Pain ◽

Vertical Displacement ◽

Occlusal Splint ◽

Significant Difference ◽

Before And After ◽

Skeletal Pattern ◽

Condylar Position ◽

The Stability ◽

Facial Types

Background:For patients whose centric relation (CR) has not been considered at the start and during treatment, the task of achieving an occlusal scheme that works together with the temporomandibular joint, the muscles, and the structures of the stomatognathic apparatus becomes a major concern.Objective:This study aims to describe a reproducible, predictable and to date unreported procedure of selective grinding guided by an occlusal splint and to analyze condylar position (CP) based on the skeletal pattern.Methods:A total of 72 symptomatic patients (38 females and 34 males) were classified into three groups: hyperdivergent, intermediate and hypodivergent. CP was quantified by mounted casts on a measures condyle displacement (MCD) device. Helkimo index was also performed in order to assess the severity of the temporomandibular joint (TMJ) disorders attending to clinical dysfunction, occlusal state and anamnestic dysfunction. Once the stability had been obtained, the splint was progressively reduced until the maximum intercuspation (MIC) was achieved.Results:The vertical displacement was found to be significantly different between the hyperdivergent and other two groups (p<0.01). Comparisons of MCD analysis before and after the selective grinding procedure identified a statistically significant difference in the horizontal and vertical CP (p<0.01) between the different groups whereas the Helkimo Index showed a clear improvement of TMJ disorders.Conclusion:All facial types, specially the hyperdivergent face type, showed a reduction in condylar displacement (CD) and less craniomandibular symptoms using this procedure, making it an excellent technique for clinicians.

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Survival and echocardiographic evaluation of dogs with idiopathic dilated cardiomyopathy treated with carvedilol

Arquivo Brasileiro de Medicina Veterinária e Zootecnia ◽

10.1590/s0102-09352010000300009 ◽

2010 ◽

Vol 62 (3) ◽

pp. 555-563 ◽

Cited By ~ 2

Author(s):

E.C. Soares ◽

G.G. Pereira ◽

L.C. Petrus ◽

M. Leomil Neto ◽

F.L. Yamaki ◽

...

Keyword(s):

Dilated Cardiomyopathy ◽

Ventricular Remodeling ◽

Left Ventricular ◽

Idiopathic Dilated Cardiomyopathy ◽

P Value ◽

Echocardiographic Evaluation ◽

Before And After ◽

Group A ◽

The Stability ◽

Group B

Sixty dogs with idiopathic dilated cardiomyopathy were randomly treated with traditional therapy - digitalis, diuretics, angiotensin-converting inhibitors - (group A) or treated with these drugs plus carvedilol (group B). Echocardiographic variables were measured before and after 3, 13, 26, and 52 weeks of treatment or until death. Comparisons between groups and time were performed. No significant differences between groups were found in the most of the echocardiographic variables. The left ventricular end-systolic diameter indexed to body surface area (LVESDi) increased significantly in the group A dogs compared to the group B animals. The survival of groups A and B dogs were not different (P-value=0.1137). In conclusion, the stability of the LVESDi observed in the group treated with carvedilol may represent the beneficial effect over the ventricular remodeling.

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The Efficiency of a Group Counseling Program Based on Psychodrama in Enhancing Self-awareness and Reducing Tension among tenth Grade Students In Qalqilia City

المجلة العربية للعلوم ونشر الأبحاث مجلة العلوم التربوية والنفسية ◽

10.26389/ajsrp.s150419 ◽

2019 ◽

Vol 3 (18) ◽

Author(s):

Said Yousef Swilem

Keyword(s):

Group Counseling ◽

Control Group ◽

Self Awareness ◽

Counseling Program ◽

Before And After ◽

Tenth Grade ◽

Post Test ◽

Group Members ◽

The Stability ◽

And Control

The purpose of this study is to examine the efficiency of a group counseling program based on psychodrama in improving self-awareness and reducing tension among tenth grade students in Qalqilia City and examining the nature and the direction of the relationship between self-consciousness and tension, the sample of study consisted of (20) students whom were distributed randomly equally to two groups the first is an experimental contains (10) students and the second is a control group contains (10) students in light of a tension variable, they are drawn out from (152) students in governmental schools who obtained the highest stress scale for the current study, a counseling program has been built based on the principles and methodology methods of psychodrama which contained (13) sessions, the current study used a measure of self-awareness and tension before and after the program. The researcher used the semi-experimental design to verify the validity of the two instruments they were presented to a group of specialized consultants. The stability coefficient was then calculated using Cronbach Alpha, where the stability value of the self-awareness scale was 0.81 and tension scale was 0.90. The mean and standard deviations were calculated and the Shapiro-Wilk test was used to examine the normal distribution probability of the variables of self-awareness and tension. The results revealed in the non-moderate distribution of individual responses to the two variables. The Mann-Whitney test, the Wilcoxon Signed Ranks Test, and the Spearman Product-Moment Correlation Coefficient test were used. The results showed differences between the experimental and control groups in the post-test of self-awareness and stress measures and for group members this is an indication of the effectiveness of the psychodrama -based counseling program in improving self-awareness and reducing stress among tenth grade students in Qalqilia city and the absence of differences in experimental group members between the tribal and remote testing methods of self-awareness and differences in group members for testing between the two pre-test and post- test of stress. The researcher recommends that self-awareness and stress in the adolescent group should be addressed through the psychodrama -based counseling programs.

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