Exploration of Self-Aggregation of Coumarin 7 and Coumarin 30 in Water: Role of β-Cyclodextrin as a Modulator

2021 ◽  
Author(s):  
Arindam Das ◽  
Sinjan Das ◽  
Arnab Biswas ◽  
Nitin Chattopadhyay
Keyword(s):  
Coumarin 7 ◽  
Self Aggregation

scholarly journals Functional Role of Proteolytic Processing of Recombinant Myocilin in Self-Aggregation

2010 ◽  
Vol 51 (1) ◽  
pp. 72 ◽  
Author(s):  
José-Daniel Aroca-Aguilar ◽  
Francisco Martínez-Redondo ◽  
Francisco Sánchez-Sánchez ◽  
Miguel Coca-Prados ◽  
Julio Escribano
Keyword(s):  
Functional Role ◽  
Proteolytic Processing ◽  
Self Aggregation

scholarly journals Developmental regulation of the mRNAs for elastins a, b and c in foetal-calf nuchal ligament and aorta

1989 ◽  
Vol 261 (1) ◽  
pp. 227-232 ◽  
Author(s):  
R P Paulovic ◽  
R A Anwar
Keyword(s):  
Developmental Regulation ◽  
Developmentally Regulated ◽  
Foetal Development ◽  
Tissue Specific ◽  
Nuchal Ligament ◽  
Self Aggregation

The data presented clearly suggest that relative amounts of mRNAs for elastins a, b and c are developmentally regulated in foetal-calf nuchal ligament and aorta and that this regulation is tissue-specific. In nuchal ligament, at earlier stages of foetal development, the relative amounts of mRNAs for elastins a and b are very low. After the foetal age of about 6 months the relative amount of mRNA for elastin b begins to increase. This is followed by an increase in the relative amount of mRNA for elastin a. In aorta, with increasing foetal age, the relative amounts of mRNAs for elastins b and c increase and decrease alternately. The relative amounts of mRNA for elastin a remain low, with only marginal increases with foetal age. A possible self-aggregation role of elastin a in elastogenesis is proposed.

Role of Epoxidized Natural Rubber in Dynamic Mechanical Properties of NR/ENR/silica Composites

2011 ◽  
Vol 415-417 ◽  
pp. 415-419
Author(s):  
Yue Qiong Wang ◽  
Qing Huang Wang ◽  
Yong Yue Luo ◽  
Jie Ping Zhong ◽  
Yong Zhen Li ◽  
...  
Keyword(s):  
Fatigue Test ◽  
Dynamic Properties ◽  
Dynamic Mechanical Properties ◽  
Test Results ◽  
Dynamic Mechanical ◽  
Dynamic Mechanical Thermal Analyzer ◽  
Thermal Analyzer ◽  
Self Aggregation ◽  
Temperature Dynamic

NR/ENR/silica composites with different ENR amount were prepared in an open two-roll laboratory mixing mill at room temperature. Dynamic properties of ENR filled NR/silica were performed by dynamic mechanical thermal analyzer (DMA) and compression fatigue analyzer. DMA and compression fatigue test results showed that the effect of ENR on dynamic properties of NR/silica was significant. DMA displayed the tanδ of NR/ENR/silica composites at 0 °C was increased with increasing ENR amount. Compression fatigue test indicated the presence of ENR decreased the heat produced during compression test and the heat build-up is the least when NR to ENR ratio is 80 to 20. Scanning electron microscopy was used to investigate the morphology of NR/silica filled with ENR. It is found that silica self-aggregation was improved in the presence of ENR and sea-island structure was formed in NR/silica when 30phr ENR added, which maybe the reason of decrement of heat produced during compression.

scholarly journals A Vertically Resolved MSE Framework Highlights the Role of the Boundary Layer in Convective Self-Aggregation

2021 ◽  
Keyword(s):  
Boundary Layer ◽  
Large Scale ◽  
Mathematical Formulation ◽  
Detailed Comparison ◽  
Moist Static Energy ◽  
Uniform Temperature ◽  
Static Energy ◽  
Global And Local ◽  
Self Aggregation

Abstract Convective self-aggregation refers to a phenomenon in which random convection can self-organize into large-scale clusters over an ocean surface with uniform temperature in cloud-resolving models. Previous literature studies convective aggregation primarily by analyzing vertically integrated (VI) moist static energy (MSE) variance. That is the global MSE variance, including both the local MSE variance at a given altitude and the covariance of MSE anomalies between different altitudes. Here we present a vertically resolved (VR) MSE framework that focuses on the local MSE variance to study convective self-aggregation. Using a cloud-resolving simulation, we show that the development of self-aggregation is associated with an increase of local MSE variance, and that the diabatic and adiabatic generation of the MSE variance is mainly dominated by the boundary layer (BL, the lowest 2 km). The results agree with recent numerical simulation results and the available potential energy analyses showing that the BL plays a key role in the development of self-aggregation. Additionally, we find that the lower free troposphere (2 - 4 km) also generates significant MSE variance in the first 15 days. We further present a detailed comparison between the global and local MSE variance frameworks in their mathematical formulation and diagnostic results, highlighting their differences.

scholarly journals Role of Arg-Gingipain A in Virulence of Porphyromonas gingivalis

1998 ◽  
Vol 66 (3) ◽  
pp. 1159-1166 ◽  
Author(s):  
Masayuki Tokuda ◽  
Thonthi Karunakaran ◽  
Margaret Duncan ◽  
Nobushiro Hamada ◽  
Howard Kuramitsu
Keyword(s):  
Porphyromonas Gingivalis ◽  
Wild Type Strain ◽  
Type I Collagen ◽  
Northern Blotting ◽  
Type I ◽  
Wild Type ◽  
Self Aggregation ◽  
Wild Type Parent ◽  
Rat Tail

ABSTRACT In order to access the role of the Porphyromonas gingivalis Arg-gingipain proteases in the virulence of this organism, a mutant defective in the rgpA gene was constructed in strain 381. This mutant, MT10, displayed only 40% of the Arg-specific cysteine protease activity of the wild-type strain. In addition, MT10, as well as the recently characterized protease mutant G-102, which is defective in the rgpB gene, displayed reduced self-aggregation, hemagglutination, and the ability to bind to immobilized type I collagen compared to levels of the wild-type parent. However, unlike mutant G-102, the rgpA mutant displayed increased binding to epithelial cells relative to that of the parental organism. Mutant MT10 also did not express detectable levels of the FimA protein as assessed by both Western and Northern blotting or fimbriae visible by electron microscopy of the cells. Furthermore, the ability of MT10 to degrade rat tail collagen fibers when it was cultured at 37°C was markedly attenuated compared to that of strain 381. These results suggest that Arg-gingipain A may play a significant role in the pathogenicity of P. gingivalis by altering the colonization and toxic properties of the organism.

Sign in / Sign up

Export Citation Format

Share Document