Resumo Avaliar o efeito da aplicação de ácido ascórbico e coexistência do fungo Mycorrhiza e Azospirillium em manjericão (Ocimum basilicum L.) sob estresse hídrico. Este experimento foi realizado como um fatorial dividido em um delineamento de blocos completos casualizados com três repetições no ano-safra de 2017-2018 em Shahriar, Irã. Neste experimento, a irrigação foi o fator principal em três níveis, incluindo o estresse hídrico baseado em 40-70-100 mm do tanque de evaporação da classe A. Biofertilizante incluindo bactérias promotoras de crescimento (Azospirillium) e fungo Mycorrhiza em quatro níveis, incluindo um (Não consumo), B (Sementes de bactérias promotoras de crescimento (Azospirillium)), C (Consumo de fungos micorrízicos como sementes), D (Uso concomitante de bactérias promotoras de crescimento Azospirillium com fungos micorrízicos como sementes) e ácido ascórbico em dois níveis de foliar aplicação, incluindo A (Ausência de aplicação de ácido ascórbico) e B (Aplicação de ácido ascórbico (dois dias após o tratamento de irrigação)) foi considerado como fator fatorial. Os resultados mostraram que o maior rendimento biológico foi obtido no estresse hídrico de 40 mm e aplicação de fertilizantes biológicos na forma de aplicação de micorrizas com média de 3.307,1 kg/ha, que foi cerca de 70% superior ao estresse evaporativo de 100 mm e sem aplicação de fertilizante biológico. O uso de ácido ascórbico em condições de estresse hídrico melhorou em 10%, o óleo essencial usando ácido ascórbico evaporou em condições de estresse hídrico de 100 mm. Como conclusão geral, o uso de ácido ascórbico e fertilizante biológico Mycorrhiza + Azospirillium melhorou as características quantitativas e qualitativas do manjericão sob estresse hídrico.

Abstract Evaluate the effect of ascorbic acid application and coexistence of Mycorrhiza fungus and Azospirillium on basil (Ocimum basilicum L.) under drought stress. This experiment was performed as a split factorial in a randomized complete block design with three replications in the crop year 2017-2018 in Shahriar, Iran. In this experiment, irrigation was the main factor in three levels, including drought stress based on 40-70-100 mm from the evaporation pan of class A. Biofertilizer including growth-promoting bacteria (Azospirillium) and mycorrhiza fungus in four levels, including a(Non-consumption) B (Seeds of growth-promoting bacteria (Azospirillium)) C (Consumption of mycorrhiza fungus as seeds) D (Concomitant use of growth-promoting bacteria Azospirillium with mycorrhiza fungi as seeds) and ascorbic acid in two levels of foliar application, including A (Absence Application of ascorbic acid) and B (Application of ascorbic acid (two days after irrigation treatment)) was considered as a factorial factor. The results showed that the highest biological yield was obtained in drought stress of 40 mm and application of biological fertilizers in the form of mycorrhiza application with an average of 3307.1 kg/ha, which was about 70% more than 100 mm evaporation stress and no application of biological fertilizer. The use of ascorbic acid under drought stress conditions improved by 10%, the essential oil using ascorbic acid evaporated under drought stress conditions of 100 mm. As a general conclusion, the use of ascorbic acid and Mycorrhiza + Azospirillium biological fertilizer improved the quantitative and qualitative characteristics of basil under drought stress.

Thanks to their specific properties, The research in the organic p-conjugated molecules and polymers has become one of the most interesting topics in the fields of chemistry physics and materials science., these compounds have become the most promising materials for the optoelectronic device technology such as solar cells. In this work, The theoretical ground-state geometry and electronic structure of the studied molecules were investigated by the DFT method at B3LYP level with 6-31G(d) basis set has been performed to explore the optical and electronic properties of a series of different compounds based on bithiophene. Different electron side groups were introduced to investigate their effects on the electronic structure. The effects of the ring structure and the substituents on the geometries and electronic properties of these materials were discussed with the aim to evidence the relationship between molecular structure and optoelectronic properties. The theoretical knowledge of the HOMO and LUMO energy levels of the components is basic in studying organic solar cells so the HOMO, LUMO, Gap energy and Voc (open circuit voltage) of the studied compounds have been calculated and reported. These properties suggest these materials as a good candidate for organic dye-sensitized solar cells

OBJECTIVES: The aim of this study is to determine the prevalence of dentine hypersensitivity (DH) and to examine some associated factors such as the initiating stimuli among adult patients attending the Restorative Clinic of the Kirikkale University Dental Faculty, Turkey. METHODS: Questionnaires for 1169 patients, 678 men and 491 women, were completed and necessary clinical examinations performed during a one-year period and patients who were diagnosed with DH were questioned further about their occupation and smoking habits. Patients with at least two different quadrants which had sensitive teeth with sound exposed cervical dentine on the facial surface, were included in the study. The amount ofcervical lesions, buccal gingival recession and initiating factors associated with the sensitive teeth were also recorded. RESULTS: Of the 1169 patients examined, 89 were diagnosed as having dentine hypersensitivity, giving a prevalence of 7.6%. The commonest teeth affected were the upper premolars and the commonest initiating factor was cold drinks. CONCLUSIONS: The prevalence of dentine hypersensitivity in a postgraduate clinic in Turkey was 7.6%. The commonest teeth affected were the upper premolar and the commonest initiating factor was cold drinks.

OBJETIVOS: El objetivo de este estudio fue determinar la prevalencia de la hipersensibilidad dentinaria (HD) y examinar algunos factores asociados con ella, tales como los estÃmulos iniciadores entre los pacientes adultos que asisten a la ClÃnica Restaurativa la Facultad Dental Universitaria de Kirikkale, TurquÃa. MÉTODOS: Cuestionarios entregados a 1169 pacientes, 678 hombres y 491 mujeres, fueron respondidos, y se realizaron los exámenes clÃnicos necesarios por espacio de un ano. Los pacientes que fueron diagnosticados con HD, fueron interrogados ulteriormente acerca de su ocupación y el hábito defumar. Los pacientes con al menos dos cuadrantes diferentes, que tenÃan dientes sensibles con exposición de dentina cervical sana sobre la superficie facial, fueron incluidos en este estudio. También se registró la cantidad de lesiones cervicales, la recesión gingival bucal y los factores iniciadores asociados con la sensibilidad de los dientes. RESULTADOS: De los 1169 pacientes examinados, 89 se diagnosticaron con hipersensibilidad de la dentina, para una cifra de prevalencia de 7.6%. Los dientes más comúnmente afectados fueron los premolares superiores y los factores iniciadores más comunes fueron las bebidas frÃas. CONCLUSIONES: La prevalencia de la hipersensibilidad dentinaria en una clÃnica postgraduada en TurquÃa fue de 7.6%. Los dientes más comúnmente afectados fueron los premolares superiores y el facgor iniciador más común fueron las bebidas frÃas.

This work is a study of 2.5-difuryl-N-methylpyrrole (B1) compound on the corrosion of steel in HCl medium. The investigation was carried out using gravimetric and electrochemical polarisation measurements. The corrosion rate decreases continuously with concentration of the compound (B1) and the efficiency increases to reach 90 % at 10-3 M. Polarisation results indicate that B1 is a cathodic inhibitor. B1 is adsorbed on metal surface according to the Langmuir isotherm. Value of free enthalpy of adsorption obtained involves chemisorption between inhibitor molecules and metal surface.