Interface and heterostructure design in polyelemental nanoparticles

Nanomaterials that form as heterostructures have applications in catalysis, plasmonics, and electronics. Multielement nanoparticles can now be synthesized through a variety of routes, but how thermodynamic phases form in such structures and how specific interfaces between them can be designed and synthesized are still poorly understood. We explored how palladium-tin alloys form mixed-composition phases with metals with known but complex miscibilities. Nanoparticles with up to seven elements were synthesized, and many form triphase heterostructures consisting of either three-interface or two-interface architectures. Density functional theory calculations and experimental work were used to determine the balance between the surface and interfacial energies of the observed phases. From these observations, design rules have been established for making polyelemental systems with specific heterostructures, including tetraphase nanoparticles with as many as six junctions.
Source: ScienceNOW - Category: Science Authors: Tags: Chemistry, Materials Science r-articles Source Type: news

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Publication date: Available online 17 July 2019Source: Journal of Integrative MedicineAuthor(s): Pierre Watcho, Ismaelle Rosine Mpeck, Patrick Brice Defo Deeh, Modeste W.eu-Nya, Esther Ngadjui, Georges Romeo Fozin Bonsou, Pierre Kamtchouing, Albert KamanyiAbstractObjectiveCyclophosphamide (CP) is commonly used to treat some cancers, but its clinical efficacy is also linked with testicular toxicity. We investigated the effects of aqueous extract (AE) and methanolic extract (ME) of Helichrysum odoratissimum for reducing CP-induced reproductive toxicity in male rats.MethodsIn addition to a normal control (group 1), drugs or v...
Source: Journal of Integrative Medicine - Category: Complementary Medicine Source Type: research
This study used Oswestry Disability Index (ODI)-self-comparison and showed that acupuncture treatments for lumber disc herniation and sciatica demonstrated significant improvement in long term clinical outcomes. A total of 112 lumbar disc herniation and sciatica cases were treated with electric acupuncture for pain relief and function improvement from July 1998 to December 2006.ResultsAll the 112 cases filled out the ODI forms prior to receiving treatment. Among the 112 patients, 23 of them did not finish the 6-week treatments. 89 cases were evaluated with ODI after 6-week acupuncture treatments. Of those 89 cases, 67 case...
Source: World Journal of Acupuncture Moxibustion - Category: Complementary Medicine Source Type: research
ConclusionsThe therapeutic effect of acupuncture and moxibustion by soothing liver and regulating mind can obviously improve the quality of life of depression elders.
Source: World Journal of Acupuncture Moxibustion - Category: Complementary Medicine Source Type: research
ConclusionRV Dysfunction according to our definition in first Anterior MI occurred in (55%) of the study population. Independent predictors for Abnormal RV function were; LCX mid or proximal affection, eventful procedure, occurrence of no reflow, Glucose level, LVESD, LVEDD and LV EF.
Source: Journal of the Saudi Heart Association - Category: Cardiology Source Type: research
Publication date: Available online 17 July 2019Source: Global HeartAuthor(s): Jessica Ying-Yi Xie, Matthew R. Solomons, Mahmood Ahmad
Source: Global Heart - Category: Cardiology Source Type: research
Publication date: Available online 18 July 2019Source: American Heart JournalAuthor(s): Nwora Lance Okeke, Allison R. Webel, Hayden B. Bosworth, Angela Aifa, Gerald S. Bloomfield, Emily Choi, Sarah Gonzales, Sarah Hale, Corrilynn O. Hileman, Virginia Kidwell, Charles Muiruri, Megan Oakes, Julie Schexnayder, Valerie Smith, Rajesh Vedanthan, Chris T. Longenecker
Source: American Heart Journal - Category: Cardiology Source Type: research
Conclusion: Experiences of being sexually harassed correlate among adolescents with high social anxiety but also with high self-esteem. Sexual harassment among adolescents may partly be explained as inept ways of showing interest, but it may nevertheless have detrimental effects on the well-being of the those subjected to it. PMID: 31311376 [PubMed - as supplied by publisher]
Source: Nordic Journal of Psychiatry - Category: Psychiatry Tags: Nord J Psychiatry Source Type: research
Publication date: Available online 17 July 2019Source: Journal of Geriatric OncologyAuthor(s): Mina S. Sedrak, Daneng Li, Louise C. Walter, Karen Mustian, Kevin P. High, Beverly Canin, Supriya G. Mohile, William Dale, Can-Lan Sun
Source: Journal of Geriatric Oncology - Category: Cancer & Oncology Source Type: research
Publication date: Available online 17 July 2019Source: Journal of Geriatric OncologyAuthor(s): Melisa L. Wong, Stuart M. Lichtman, Gary R. Morrow, John Simmons, Tomma Hargraves, Cary P. Gross, Jennifer L. Lund, Lisa M. Lowenstein, Louise C. Walter, Cara L. McDermott, Supriya G. Mohile, Harvey Jay Cohen
Source: Journal of Geriatric Oncology - Category: Cancer & Oncology Source Type: research
ConclusionIn a cohort of 40 older adults with newly diagnosed multiple myeloma, three frailty indices have differing approaches to operationalizing frailty resulting, in different patients being categorized as frail. Little agreement existed between the models. Further studies are needed to explore the utility of these models in predicting treatment toxicity and prognosis.
Source: Journal of Geriatric Oncology - Category: Cancer & Oncology Source Type: research
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