Research into the mode of action of the essential oil of Melaleuca alternifolia (Tea tree oil) is briefly reviewed. Its mode of action is interpreted in terms of the membrane-toxicity of its monoterpenoid components and different approaches for determining cell membrane damage are discussed.

The past decade has seen considerable activity in algorithm development for the Navier-Stokes equations. This has resulted in a wide variety of useful new techniques. It would appear, however, that there is plenty of room for further improvements. That is to say, we are far from exhausting all possible sets of rules for these problems and it is highly probable that some remaining ones will be m...

Mday, M arch 24 transmission system was 20 Gb/s, while the symbol rate was 10 Gbaud (=10 GS/s). The second MZ modulator was used as a pulse carver to generate RZ-DQPSK signals. For the 20-Gb/s DQPSK receivers, two 100-ps DIs with two separate balanced receivers are generally required to simultaneously demodulate the two 10-Gb/s data streams contained in the 10-Gbaud DQPSK signal [4]. However, w...

It is shown that good linear ~n ,k ,d] codes over a finite field GF (q) can be constructed by concatenating the generator matrices of Reed-Solomon codes. For the first interesting case of k = 3, it is shown that many of the codes obtained via projective geometry tecqniques can readily be obtained via the proposed algebraic approach. ) 0 T ec hn io n C om pu te r Sc ie nc e D ep ar tm en t T eh ...

Within the post-Soviet area, the Baltic states have been far ahead of any other former Soviet republic. Estonia, Latvia, and Lithuania have done amazingly well in terms of political, economic, and social transition. Yet, like many other new members of the European Union, the Baltic states still face varying degrees of challenges to this perpetual transition that every state faces. The author id...

Possible involvementofendogenousopioids inhumoral immune responseshas been explored in the experimental animals. Opioid agonists likemorphine and leu-enkephalin significantly enhanced antigen-inducedhistamine release from the peritoneal mast cells of sensitised rats invitro; this was effectively antagonised by naloxone. Naloxone itselfinhibited antigen-induced histamine rele...