Allergic Rhinitis - Risk Factor for Bronchial Asthma in Children

In recent decades, both worldwide and in our country, there is a noticeable increase in allergic diseases, including those of respiratory system - bronchial asthma and allergic rhinitis. Epidemiological studies show that these conditions often coexist in the same patient. Allergen - specific sensitization is one of the major risk factors for the development of asthma in children. Allergic rhinitis usually precedes asthma. The premise `one respiratory system, one disease` marks a change in diagnostics and therapeutic treatment of respiratory allergies. Currently allergen-specific immunotherapy, administered in the early stage of the disease, is the only treatment that could have disease-modifying effect.The aim of this study is to analyze what proportion of children with asthma suffer from allergic rhinitis and what are the most common therapeutic schemes and practices used in the prophylaxis and treatment of the condition.For this purpose we conducted a survey among parents of children suffering from bronchial asthma on the territory of the city of Varna. Data were processes statistically based on respondent`s answers and were presented graphically. Results confirm that allergic rhinitis is a widespread disease among children with asthma and that is often neglected and not diagnosed and managed in time. Early diagnostics and adequate control of allergic rhinitis is crucial to stop the disease progression to asthma

Quality of Life in Patients with Bronchial Asthma in Childhood

Bronchial asthma is a major cause of morbidity in children in developed countries. In recent years, a large number of epidemiological studies have found an in- creased incidence of childhood asthma which makes this respiratory disorder the most frequent chronic dis- ease in childhood. Many factors are responsible for the huge incidence of asthma: triggering factors from the external environment, the use of inappropriate an- ti-inflammatory medication, lack of assistance with regard to therapeutic regimen, inadequate training of patient (family). The quality of life adolescents suffer- ing of bronchial asthma and their families often is ex- tremely deteriorated. Asthma may limit the ability of children to play, learn and sleep, to lead normal active life. Achieving disease control is the main goal of the treatment conducted. The Global initiative for asthma (GINA) defines control on asthma as minimal chron- ic symptoms, no emergency medical visits, no need of saving medication, normal daily activity, social adap- tation and school attendance.The aim of this study is to analyze the quality of life of children with asthma based on the achieved disease control. To achieve this goal a survey was conducted among parents and children of various ages in the city of Varna. Data from the surveys were processed using mathematical and statistical methods, and the results are presented by graphic images.Results show that in early childhood, when the treatment is performed under the supervision of par- ents, a well-controlled treatment is achieved compared to teenage years.Bronchial asthma is a chronic disease that is best affected in `therapeutic cooperation` between clini- cians, patients and their families. Implementation of training programs for children and parents will im- prove their compliance and execution of their indi- vidual treatment plan, and hence disease control and quality of life of patients

Photocatalytic H-2 evolution, CO2 reduction, and NOx oxidation by highly exfoliated g-C3N4

g-C3N4, with specific surface area up to 513 m(2)/g, was prepared via three successive thermal treatments at 550 degrees C in air with gradual precursor mass decrease. The obtained bulk and exfoliated (1ex, 2ex and 3ex) g-C3N4 were characterized and tested as photocatalysts for H-2 production, CO2 reduction and NOx oxidation. The exfoliated samples demonstrated graphene-like morphology with detached (2ex) and sponge-like framework (3ex) of layers. The surface area increased drastically from 20 m(2)/g (bulk) to 513 m(2)/g (3ex). The band gap (E-g) increased gradually from 2.70 to 3.04 eV. Superoxide radicals (O-center dot(2)-) were mainly formed under UV and visible light. In comparison to the bulk, the exfoliated g-C3N4 demonstrated significant increase in H-2 evolution (similar to 6 times), CO2 reduction (similar to 3 times) and NOx oxidation (similar to 4 times) under UV light. Despite the E-g widening, the photocatalytic performance of the exfoliated g-C3N4 under visible light was improved too. The results were related to the large surface area and low e(-)-h(+) recombination. The highly exfoliated g-C3N4 demonstrated selectivity towards H-2 evolution reactions.Web of Science1010art. no. 114

Composite Electrodes of Activated Carbon and Multiwall Carbon Nanotubes Decorated with Silver Nanoparticles for High Power Energy Storage

Composite materials in electrodes for energy storage devices can combine different materials of high energy density, in terms of high specific surface area and pseudocapacitance, with materials of high power density, in terms of high electrical conductivity and features lowering the contact resistance between electrode and current collector. The present study investigates composite coatings as electrodes for supercapacitors with organic electrolyte 1.5 M TEABF4 in acetonitrile. The composite coatings contain high surface area activated carbon (AC) with only 0.15 wt% multiwall carbon nanotubes (MWCNTs) which, dispersed to their percolation limit, offer high conductivity. The focus of the investigations is on the decoration of MWCNTs with silver nanoparticles, where smaller Ag crystallites of 16.7 nm grew on carboxylic group-functionalized MWCNTs, MWCNT–COOH, against 27–32 nm Ag crystallites grown on unfunctionalized MWCNTs. All Ag-decorated MWCNTs eliminate the contact resistance between the composite electrode and the current collector that exists when undecorated MWCNTs are used in the composite electrodes. Ag-decorated MWCNT–COOH tripled the power density and Ag-decorated MWCNT additive doubled the power density and increased the maximum energy density by 6%, due to pseudocapacitance of Ag, compared to composite electrodes with undecorated MWCNTs

Photocatalytic degradation of mecoprop and clopyralid in aqueous suspensions of nanostructured N-doped TiO2. Molecules 2010

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University-Community Engagement Models

The speakers are: Leah Ashwill, Director, Western Kentucky University’s ALIVE Center for Community Partnerships Nadia De Leon, Community Engagement Coordinator, WKU ALIVE Center for Community Partnerships Paul Markham, Co-Director, Western Kentucky University Institute for Citizenship and Social Responsibility & Assistant Professor of Honors Interdisciplinary Studies Terry Shoemaker, Program Coordinator, WKU Institute for Citizenship & Social Responsibility Katherine McCormick, James W. and Diane V. Stuckert Service Learning Professor & Associate Professor in Interdisciplinary Early Childhood Education, University of Kentucky Bob Kelly, Architect & Adjunct Faculty, University of Kentucky College of Design; Co-chair, University Neighborhood Advisory Council & Founding Member, Town & Gown Commission Kurt Gohde, Professor of Art, Transylvania University; Co-leader, Community Engagement through the Arts Course Kremena Todorova, Assistant Professor of English, Transylvania University; Co-leader, Community Engagement through the Arts Course Student respondents The panel discussion will include ample time for audience Q & A

Photocatalytic Degradation of Mecoprop and Clopyralid in Aqueous Suspensions of Nanostructured N-doped TiO2

The work describes a study of the oxidation power of N-doped and undoped anatase TiO2, as well as TiO2 Degussa P25 suspensions for photocatalytic degradation of the herbicides RS-2-(4-chloro-o-tolyloxy)propionic acid (mecoprop) and 3,6-dichloro-pyridine-2-carboxylic acid (clopyralid) using visible and UV light. Undoped nanostructured TiO2 powder in the form of anatase was prepared by a sol-gel route. The synthesized TiO2, as well as TiO2 Degussa P25 powder, were modified with urea to introduce nitrogen into the structure. N-doped TiO2 appeared to be somewhat more efficient than the starting TiO2 (anatase) powder when visible light was used for mecoprop degradation. N-doped TiO2 Degussa P25 was also slightly more efficient than TiO2 Degussa P25. However, under the same experimental conditions, no degradation of clopyralid was observed in the presence of any of the mentioned catalysts. When the kinetics of mecoprop degradation was studied using UV light, more efficient were the undoped powders, while in the case of clopyralid, N-doped TiO2 Degussa P25 powder was most efficient, which is probably a consequence of the difference in the molecular structure of the two herbicides

Photocatalytic Reduction of CO2 over Iron-Modified g-C3N4 Photocatalysts

Pure g-C3N4 sample was prepared by thermal treatment of melamine at 520 °C, and iron-modified samples (0.1, 0.3 and 1.1 wt.%) were prepared by mixing g-C3N4 with iron nitrate and calcination at 520 °C. The photocatalytic activity of the prepared materials was investigated based on the photocatalytic reduction of CO2, which was conducted in a homemade batch reactor that had been irradiated from the top using a 365 nm Hg lamp. The photocatalyst with the lowest amount of iron ions exhibited an extraordinary methane and hydrogen evolution in comparison with the pure g-C3N4 and g-C3N4 with higher iron amounts. A higher amount of iron ions was not a beneficial for CO2 photoreduction because the iron ions consumed too many photogenerated electrons and generated hydroxyl radicals, which oxidized organic products from the CO2 reduction. It is clear that there are numerous reactions that occur simultaneously during the photocatalytic process, with several of them competing with CO2 reduction