scholarly journals Effective stabilization of a planar phosphorus(iii) center embedded in a porphyrin-based fused aromatic skeleton

2017 ◽  
Vol 8 (12) ◽  
pp. 8231-8239 ◽  
Author(s):  
Keisuke Fujimoto ◽  
Atsuhiro Osuka
Keyword(s):  
Structural Constraint ◽  
Effective Stabilization ◽  
Aromatic Stabilization

Planar phosphorus(iii) centers were effectively stabilized by structural constraint as well as aromatic stabilization in porphyrin-based fused π-conjugated frameworks.

Structural Changes in a 9%Cr Creep Resistant Steel during Creep Test

2012 ◽  
Vol 715-716 ◽  
pp. 895-900
Author(s):  
Valeriy Dudko ◽  
Andrey Belyakov ◽  
Vladimir Skorobogatykh ◽  
Izabella Schenkova ◽  
Rustam Kaibyshev
Keyword(s):  
Structural Changes ◽  
Subgrain Size ◽  
Large Strain ◽  
Particle Growth ◽  
Second Phase ◽  
Second Phase Particles ◽  
Creep Rupture Test ◽  
Lath Structure ◽  
Creep Regime ◽  
Effective Stabilization

Structural changes in a 9%Cr martensitic steel after 1%, 4% creep and creep rupture test at 650°C and stress of 118 MPa were examined. Heat treatment provided the formation of tempered martensite lath structure (TMLS) in the steel. The precipitations of second phase particles along block and lath boundaries provide effective stabilization of the TMSL under annealing/aging condition. This structure hardly changed under creep conditions in grip portion of crept sample. Significant coarsening of both the second phase particles and the martensite laths takes place in neck portion. In addition, the latter ones lose their original morphology and are replaced by large strain-induced subgrains. It should be noted that the increase of subgrain size is in almost direct proportion to the particle growth during the creep to 4% strain. The rapid growth of martesite laths followed by their evolution to deformation subgrains takes place within the tertiary creep regime.

scholarly journals Mothers' cooking stress and family dining out : examining psychological influences and family dining out benefits on mothers' life satisfaction

2018 ◽  
Author(s):  
◽  
Kathleen Jeehyae Kim
Keyword(s):  
Life Satisfaction ◽  
Positive Impact ◽  
Learning Experience ◽  
Structural Constraint ◽  
Moderating Effects ◽  
Stress Group ◽  
Family Dining ◽  
Negative Impacts ◽  
Constraint Model ◽  
Positive Impacts

This study aimed to (1) to examine whether the constructs of dining out constraints (i.e., interpersonal constraint, structural constraint, and intrapersonal constraint) influence the frequency of mothers dining out with their family, (2) to investigate the relationship between cooking stress, the need for a reward, the desire to dine out, constraints, and the frequency of dining out as leisure, focusing on the entire process from problem/need recognition to purchase decision, (3) to identify whether dining out benefits (i.e., enjoyment, convenience, detachment, relaxation, and learning experience) influence the life satisfaction of mothers, and (4) to assess the moderating effects of mothers' cooking stress on the relationships among dining out benefits and life satisfaction. The results for the constraint model indicated that both interpersonal and structural constraints of dining out have significantly negative impacts on family dining out frequency, but it was failed to find the effect of intrapersonal constraint on family dining out frequency. The findings for the decision-making model indicated that cooking stress has significantly positive impacts on both desire to dine out and need for reward. It was also found that need for reward has a significantly positive impact on desire to dine out, and that desire to dine out has a significantly positive impact on perceived frequency of family dining out as leisure. It was revealed that desire to dine out also has significantly positive impacts on both interpersonal constraint and intrapersonal constraint, while there did not seem to be a positive relationship between desire to dine out and structural constraint. Both interpersonal constraint and structural constraint did not have significantly negative impacts on perceived frequency of dining out. Yet, intrapersonal constraint had a significantly negative impact on perceived frequency of dining out. The results for the benefit model indicated that enjoyment, convenience, relaxation, and learning experience have significantly positive impacts on life satisfaction after family dining out. On the other hand, detachment did not have a significant impact on life satisfaction after family dining out. Regarding the moderating effects of high versus low cooking stress groups, the effects of convenience and learning experience on life satisfaction were significantly smaller in the high cooking stress group than in the low cooking stress group, but the effects of enjoyment on life satisfaction were significantly stronger in the high cooking stress group than in the low cooking stress group. The effects of detachment and relaxation on life satisfaction were not significantly different between the high and low cooking stress groups. The implications of these findings for the restaurant management strategies to attract mothers and their families are discussed.

scholarly journals It’s All Under Control! On Perfective Present Forms in BCS Main Clauses

2021 ◽  
Author(s):  
Marco Biasio
Keyword(s):  
Structural Constraint

This study aims to provide a unified analysis of the syntax-pragmatics interface of the (allegedly) anomalous licensing of the perfective present (PresPF) in BCS present-tensed main clauses. Although PresPF forms cannot usually refer to eventualities that are anchored to the time of utterance UT, there seem to be three apparent exceptions to this structural constraint. They are as follows: 1) abusive metonymic performatives; 2) live demonstrations; and 3) nonveridical contexts introduced by the epistemic operator možda ‘maybe’. It is claimed that for PresPF forms to be licensed in BCS main clauses, control needs to be specified as a variable at the level of the so-called Seat of Knowledge in the SpeechActP layer.

scholarly journals Microbubbles Decorated with Dendronized Magnetic Nanoparticles for Biomedical Imaging. Effective Stabilization via Fluorous Interactions

2019 ◽  
Author(s):  
Da Shi ◽  
Justine Wallyn ◽  
Dinh-Vu Nguyen ◽  
Francis Perton ◽  
Delphine Felder-Flesch ◽  
...  
Keyword(s):  
Molar Ratio ◽  
Aqueous Dispersions ◽  
Force Microscopy ◽  
Atomic Force ◽  
Microscopy Investigation ◽  
End Groups ◽  
Mixed Films ◽  
Effective Stabilization ◽  
Effective Result ◽  
End Group

Dendrons fitted with three oligoethylene glycol (OEG) chains, one of which carrying a fluorinated or hydrogenated end group, and bearing a bisphosphonate polar head (C n X2 n +1OEG8Den, X = F or H; n= 2 or 4) were synthesized and grafted on the surface of iron oxide nanoparticles (IONPs) for microbubble-mediated imaging and therapeutic purposes. The size and stability of the dendronized IONPs (IONP@C n X2 n +1OEG8Den) in aqueous dispersions were monitored by dynamic light scattering. Investigation of the spontaneous adsorption of IONP@C n X2 n +1OEG8Den at the interface between air - or air saturated with perfluorohexane - and an aqueous phase establishes that exposure to the fluorocarbon gas markedly increases the rate of adsorption of the dendronized IONPs to the gas/water interface and decreases the equilibrium interfacial tension. This suggests that fluorous interactions are at play between the supernatant fluorocarbon gas and the fluorinated end groups of the dendrons. Furthermore, small, stable perfluorohexane-stabilized microbubbles (MBs) with a dipalmitoylphosphatidylcholine (DPPC) shell that incorporates IONP@C n X2 n +1OEG8Den (DPPC/Fe molar ratio 28:1) were prepared and characterized using both optical microscopy and an acoustical method of size determination. The dendrons fitted with fluorinated end groups lead to smaller and more stable MBs than those fitted with hydrogenated groups. The most effective result is already obtained with C2F5, for which MBs, ~1.0mm in radius, reach a half-life of ~6.0 h. An atomic force microscopy investigation of spin-coated mixed films of DPPC/IONP@C2X5OEG8Den combinations (molar ratio 28:1) shows that the IONPs grafted with the fluorinated dendrons are located within the phospholipid film, while those grafted with the hydrocarbon dendrons are completely absent from the phospholipid film.

Image Completion Using Randomized Correspondence

2011 ◽  
Vol 271-273 ◽  
pp. 229-234
Author(s):  
Yun Ling ◽  
Hai Tao Sun ◽  
Jian Wei Han ◽  
Xun Wang
Keyword(s):  
Real Time ◽  
Random Sampling ◽  
Nearest Neighbor ◽  
Structural Constraint ◽  
Image Completion ◽  
Image Patches ◽  
Real Time Applications ◽  
Surrounding Areas ◽  
Straight Lines ◽  
Better Than

Image completion techniques can be used to repair unknown image regions. However, existing techniques are too slow for real-time applications. In this paper, an image completion technique based on randomized correspondence is presented to accelerate the completing process. Some good patch matches are found via random sampling and propagated to surrounding areas. Approximate nearest neighbor matches between image patches can be found in real-time. For images with strong structure, straight lines or curves across unknown regions can be manually specified to preserve the important structures. In such case, search is only performed on specified lines or curves. Finally, the remaining unknown regions can be filled using randomized correspondence with structural constraint. The experiments show that the quality and speed of presented technique are much better than that of existing methods.

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