160 research outputs found

    Giant Left Subclavian Artery Pseudoaneurysm complicating infective endocarditis

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    Giant Left Subclavian Artery Pseudoaneurysm complicating infective endocarditi

    Data_Sheet_1_The correlation between posttraumatic growth and social support in people with breast cancer: A meta-analysis.PDF

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    Posttraumatic growth (PTG) is consistently reported to be associated with social support among people with breast cancer. But so far there is no consensus on the size and direction to which social support are related to PTG in people with breast cancer. Thus, a meta-analysis was performed by us to quantitatively synthesize the previous results. This meta-analysis followed the PRISMA 2020 guidelines. We searched PubMed, PsycINFO, Web of Science, Embase, Chongqing VIP Information Co., Ltd. (VIP), China National Knowledge Infrastructure (CNKI), and WANFANG DATA databases prior to 1 June 2022. A random effects model of Stata software (version 17.0) was employed to compute the pooled association coefficient and examine a series of moderating factors: economic level, publication type, region, year of publication, participants’ age, and social support measurement tools. Ultimately, 31 studies including 6,380 breast cancer patients were identified. This meta-analysis offers evidence of a highly positive correlation between PTG and social support among people with breast cancer (r = 0.425). Economic level, region, and social support measurement tools moderated the link between PTG and social support among people with breast cancer. Whether variables such as disease stage, time since diagnosis, and disease treatment moderate the link between PTG and social support among people with breast cancer can be further investigated in the future.</p

    Interfacial Interactions between Poly(3-hexylthiophene) and Substrates

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    Interfacial interactions between poly­(3-hexylthiophene) (P3HT) and substrate surface have been investigated. P3HT nanowhiskers of single molecule thickness were prepared from chloroform solution, and their adsorption on substrates of various surface chemistries was investigated using atomic force microscopy (AFM) and Raman spectroscopy. P3HT monolayer nanowhiskers with edge-on molecular orientation were found to adsorb readily onto a SiO<sub>2</sub> substrate, and the amount of adsorption was significantly higher on a SiO<sub>2</sub> surface modified with a perfluorohexyl monolayer; no P3HT adsorption was observed on a hexyl monolayer. These results suggest that electron-withdrawing groups rather than surface energy govern the interfacial interactions. On a highly oriented pyrolytic graphite (HOPG) surface, P3HT molecules adsorbed in face-on orientation, and edge-on monolayer nanowhiskers were absent on the surface. Raman spectroscopy data revealed strong charge-transfer interactions between face-on P3HT molecules and the HOPG surface

    Wetting States and Departure Diameters of Bubbles on Micro-/Nanostructured Surfaces

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    Wetting states for droplets have been extensively investigated in the past. As the counter phase of the droplets, bubbles’ wetting states have rarely been systematically explored. The wetting state of a bubble is closely related to its departure diameter, which plays significant roles in bubble-generated processes in boiling heat transfer and gas-evolving reactions. Based on the principle of minimum surface energy, we explicitly define three equilibrium wetting states (hemi-wicking state, Wenzel state, and Cassie–Baxter state) for bubbles on micro-/nanostructured surfaces in this paper. We analyze the three-phase contact line profiles for bubbles under these wetting states and propose theoretical models for predicting departure diameters of hemi-wicking-state bubble and Wenzel-state bubble on micro-/nanostructured surfaces. We identify competing effects of bubble departure in Wenzel state: the augmentation of contact line length due to the roughness, which would delay bubble departure, and the decrease of contact line length due to the reduced apparent contact angle, which would facilitate bubble departure. We demonstrate that hemi-wicking-state bubble exhibits a much smaller departure diameter on the textured surfaces. These findings are supported by numerical simulations by the three-dimensional (3D) multiple-relaxation-time lattice Boltzmann method. It is found that the length of the outermost contact lines instead of all contact lines determines the departure diameter of hemi-wicking-state bubble based on bubble detachment processes captured by our 3D numerical simulations. This work offers an avenue for the accurate prediction and control of bubble departure behaviors from micro-/nanostructured surfaces, and therefore can guide optimal designs of micro-/nanostructured surfaces in a variety of applications in boiling, desalination, and hydrogen production by electrolysis
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