196,131 research outputs found
PVA_H2SO4 Hydrogel for wearable devices
No full textIn recent years, wearable electronic sensing devices have attracted much attention because they can easily monitor human motion and physiological signals. The design of traditional wearable electronic devices mostly combines conductive materials with flexible substrates and provides for their placement on the body using an external aid like plasters and bands. The emergence and development of wearable devices have provided new directions for many fields, especially artificial intelligence systems and wearable healthcare devices. Currently, skin-attached wearable devices are widely expected because they adhere well to the skin and accurately enable health monitoring. However, wearable equipment, such as glasses or metal, is still limited to the conventional form. The key reason is that the critical devices cannot be flexible and stretchable so the device cannot be deformed and adhered well to the skin. Therefore, flexible, stretchable, and conductive materials are highly expected in wide applications. Gel-based materials exhibited excellent elongation, self-healing, and self-adhesive performance for various applications. As a result, the sample could be used for motion detection and signal transmission. Our research efforts are focused on the development of an alternative to traditional electronics that should be low-cost, bio-degradable, and made of environmentally nontoxic substances such as hydrogels. Hydrogels exhibit excellent flexibility and stretchability as promising candidates for preparing wearable devices, especially conductive hydrogels. We have investigated PVA_H2SO4 hydrogels and PVA_H2SO4/PANI-PAMPSA- PVA_H2SO4 double-layered hydrogels with different molecular weight as well as different amounts of PVA polymer as potential materials for energetic or sensors applications.
Reference:
Giovagnoli, A.; D’Altri, G.; Yeasmin, L.; Di Matteo, V.; Scurti, S.; Di Filippo, M.F.; Gualandi, I.; Cassani, M.C.; Caretti, D.; Panzavolta, S.; et al. Multi-Layer PVA-PANI Conductive Hydrogel for Symmetrical Supercapacitors: Preparation and Characterization. Gels 2024, 10, 458. https://doi.org/10.3390/gels10070458
Giada D’Altri, Lamyea Yeasmin, Valentina Di Matteo, Stefano Scurti, Angelica Giovagnoli, Maria Francesca Di Filippo, Isacco Gualandi, Maria Cristina Cassani, Daniele Caretti, Silvia Panzavolta, Erika Scavetta, Mariangela Rea, and Barbara Ballarin,ACS Omega 2024 9 (6), 6391-6402. DOI: 10.1021/acsomega.3c0539
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
Assessment of the health status in the Massa Lombarda cohort: a preliminary description of the program evaluating cardio-cerebro-vascular disease risk factors and quality of life in an elderly population.
No full textThe Massa Lombarda program (MLP) is the first step of a European multi-center program, promoted and coordinated from Bologna University's Academic Spin off Health Research and Development, which attempts to manage advanced sanitary research in general population. The instant individual definition (IID) study is the first phase of the program concerning the study of risk factors (RF) and early diagnosis of coronary heart disease (CHD), through a new diagnostic technology called myocardial perfusion scoring system (MPS). The study consists
of a longitudinal observational epidemiological investigation of adult population (above 25 years of age) resident in Massa Lombarda (Ravenna), with the survey of social and biological parameters. The elderly part of the population (1000 subjects above 75 years) was submitted to a more complex analysis, as part of the
study on health status in European aging populations, aimed at revealing the determinants influencing the healthy aging, and at identifying their impact on mortality,cardiovascular and respiratory morbidity, disability and decline of quality of life. Laboratory analyses were aimed at identifying the following factors: (i) Genetic markers related to pro and anti-inflammatory cytokine- codifying genes. (ii) Oxidative stress-involved molecules, and inflammation-involved genes, and more in general genes involved in the brittleness(iii) (ApoE). Appraising the degree of interaction with non-genetic factors, like measurable immunological markers in the peripheral blood, markers
of reactions to oxidative stress,evaluation of metabolic parameters. Moreover, old population is expected to answer the questionnaires for evaluation of the dietary habits, physical activity, self-sufficiency,cognitive ability, motor coordination, perceived stress and social relationships
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Prospective, multicenter, observational analysis of 5-HT3 receptor antagonist antiemetic prescribing with different chemotherapy regiments
No full textDr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Criogel polimerico macroporoso a base di N-alchil-D-glucammina per trattenere e/o rimuovere contaminanti tossici
No full textThe present invention refers to the field of chemistry and in particular to a N-alkyl-D-glucamine based macroporous polymeric cryogel, the method for the preparation thereof and its use for sequestering and/or removing toxic contaminants such as metalloids and/or toxic heavy metals, for example from water and/or soil
Electromechanical modeling of Nb3Sn superconducting wires subjected to periodic bending strain
No full textThe transport performance of Nb3 Sn cable-in- conduit conductors (CICCs) depends on the strain distribution along the superconducting filaments determined by the combi- nation of electromagnetic and mechanical forces applied to the strands. Experimental studies on the effect of bending strain were performed at the University of Twente by means of the Test Arrangement for Strain Influence on Strands (TARSIS) facility. The aim of this paper is to verify the agreement between a detailed electromechanical model of the wire and the experimental results obtained in TARSIS. A numerical model of two Nb3Sn internal tin strands was developed, which describes the wire through a distributed parameter nonlinear electrical circuit. The model re- quires a single strand to be discretized into a number of elements, connected by transverse conductances and subjected to a given strain distribution. The strain distribution maps were computed at the École Centrale Paris by means of the MULTIFIL code at different experimental conditions in the TARSIS facility. The simulation results show good agreement with the experimental ones in terms of both critical current and n-value degradation
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