[PDF] Top 20 Chemical composition of the dufour gland secretion in queens of Melipona bicolor (Hymenoptera, Meliponini)

... study of the composition of the Dufour gland secretion of ...M. bicolor queens, we have planned new GC/MS analyses in age-controlled ... See full document

... between the Dufour gland of virgin and physogastric ...queens. The cells of the Dufour gland of virgin queens are low and, generally, ... See full document

... Since the cuticular hydrocarbons C23, C25:1, C25, C27:1, C27, C29:1 and C29 were present in all individuals analyzed and were the most abundant (Table 1), they probably represent structural ... See full document

... pairs of mandibles and mandibular glands were used for each group: newly emerged, nurse and forager workers, males, and virgin queens of Melipona bicolor Lepeletier, 1836 (Hymenoptera, ... See full document

... As the results showed, the workers gland synthetic machinery seems to be switched off, the vesicular smooth endoplasmic reticulum (SER) being poorly developed ...3A) in comparison with ... See full document

... worker gland secretion. In queens the Dufour gland secretion is composed of hydrocarbons and esters, whereas in workers only of odd long chair ... See full document

... that the mandibular glands of Melipona bicolor queens is constituted by a group of secretory cells united by a membrane in the mandible base, as already observed by ... See full document

... The chemical composition of the samples was obtained by micro-extraction in solid phase using polydimethylsilosane ibers from SUPELCO (100 µm bounded) in direct contact ... See full document

... influences the grain size and the quality of the casting is the amount of modifier introduced into the ...mould. The amount of cobalt aluminate in ... See full document

... Optimisation of the turbine mixer’s performance during the preparations of the sand mix still remains an important issue as this mixer type is now in widespread ...techniques ... See full document

... bath in free form, as a master alloy or a salt, belong to well-known modifiers of hypereutectic ...that in such case the aluminum phosphide, AlP, becomes the nucleus of ... See full document

... Subbotko, Methods of distribution of tool at units based on TM software of Guhring, Production Engineering Wroc ł aw University of Technology,(2006) 273- 280 (in Polish).. Bocheński, C[r] ... See full document

... Checking the dependency of attributes is done to omit the un- necessary attributes, the step which can be of crucial importance in optimising the decision-making ...number ... See full document

... TEM in Karnowisky in ...washing in the buffer the testis were post fixed in 1% osmium tetroxide in the same ...buffer. The dehydration was carried out ... See full document

... from the temperature of casting the bronze to the mould on Figure ...From the introduced cross - section of casts from the probe TDAg, it results that it together with ... See full document

... by the MIC assay, agrees with previous studies that have shown that propolis from stingless bees (7,9,23) and from Apis mellifera (6) has antimicrobial activity, particu- larly against gram-positive ...bacteria. ... See full document

... Haratym, Dok ł adno ć wymiarowa odlewów wykona- nych w procesie Replicast CS, Archiwum Odlewnictwa rocznik 3, nr 9, Katowice 2003.. Arendarski, Niepewno ć pomiarów, Oficyna Wydaw- nic[r] ... See full document

... as the extent to which a person views an innovation as offering an advantage over previous ways of performing the same task (Roger, 1983; Agarwal & Prasad, ...adopters of Internet banking ... See full document

... investigated the effect of associated CSR practices on consumers and presented similar ...findings. The CSR activities mentioned in the research are, for instance, environmental ... See full document

... at the alternate sides, of the tangents through the diameter of the circle, and then the line joining these points divides the circle in the ratio ... See full document