BACKGROUND The role of lectins is important in interaction between pathogens and mosquito vectors. This study was performed to identify agglutinin activities of protein molecules on the midgut of Culex pipiens. METHODS Culex pipiens was reared in insectray condition and the midguts of males and females (blood fed and unfed) were dissected separately in Tris-HCl buffer. The extracts of midguts...

This paper examines the time structure of the effects of R&D activities on firm growth. The main questions are whether R&D activities come together with firms’ growth in the subsequent periods and how this relationship depends on other characteristics of the firms, such as size and industry. In addition, we study the relationship between R&D effects and the autocorrelation dynamics of firm grow...

this study was conducted on two canola (brassica napus) cultivars, okapi a winter type and cold tolerant and rgs003 a spring type and cold sensitive. seedlings were grown in an environmentally controlled growth room with 16 h d-1 photoperiod at 22/16 °c (day/night, control). at the 4-leaf stage, half of pots were transferred to a cold growth room for 7 d at 10/3°c (day/night, cold treatment) an...

CandidatusLiberibacter asiaticus (Las) has been reported to increase the susceptibility of theAsian citrus psyllid,Diaphorina citriKuwayama (Hemiptera: Psyllidae), to selected insecticides. Reduced general esterase activity in Las-infected, compared with uninfected, D. citri has been proposed as a possible explanation for this difference in insecticide susceptibility. The current study was cond...

abstract: essential oils are commonly used to treat minor health problems. in this study the chemical compositions of lavandula officinalis and thymus vulgaris were determined by gas chromatography and mass spectrometry. gc/ms analysis of t. vulgaris resulted in thymol as the major oil component where as methyl sulfony exhibited as the most abundant constituent of l. officinalis. the antibacter...

BACKGROUND Uracil derivatives have a great attraction because they play an important role in pharmacological activities. Pyrimidodiazepines, lumazines, triazolopyrimidines and xanthines have significant wide spectrum activities including anticancer, antiviral as well as antimicrobial activities. RESULTS A newly synthesized compounds pyrimido[4,5-b][1, 4]diazepines 5a-e, 6a-d, lumazines 7a-d, ...

 D. kotschyi is a source of essential oils with medicinal properties such as antihyperlipidemic, immunomodulatory, antinociceptive and cytotoxic effects. This study aimed to investigate whether the application of chitosan can improve plant growth, increase secondary metabolite production and help antioxidant enzymatic systems in Dracocephalum kotschyi under in vitro culture. Tow-week-old seedli...