o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o oo o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o Recent research n the buildup f r cks fr m small dust grains has reaffirmed that grain gr wth in pr t planetary disks sh uld ccur quickly. Calculati n f gr wth rates have been made f r a variety f gr wth pr cesses and generally ...

Gel electrophoresis o f the white flocculent pheromone disseminating secretions produced by males o f the three dung beetle species, Kheper lamarcki, K. nigroaeneus and K. subaeneus, re­ vealed that three different proteins with molecular masses o f ca. 15 kDa are the major constitu­ ents o f these secretions. The molecular mass o f these components in the secretions o f K. lamarcki and K. nigr...

Opt i c f l o w i s t he apparent mo t ion o f image f e a t u r e s in the imaging p l a n e . The compu ta t i on o f o p t i c f l o w i s a f i r s t s tep i n d e t e r m i n i n g the p a r t i c u l a r mo t ions o f l i g h t i n g , o b j e c t s , and v iewers in an image sequence. New approaches are presented f o r the computa t ion o f o p t i c f l o w from dynamic image d a t a . ...

Two further loci can be added to the three already known (g , g l and f g ) in Silene controlling the 7 -0 and 2"-0-glycosylation o f the C-glycosylflavone isovitexin (6-C-glucosylapigenin). These loci, 0 7 g for the 7-O-galactosylation and D6a for the 2"-0-arabinosylation, appear only to be expressed in cotyledons and rosette leaves and control the biosynthesis o f isovitexin 7 -0 galactoside ...

'The ;~nisotropic displacement-displacemenlent correlation function for the two types o f pairs o f nearest neighhours in solid hcp hydrogen and deuterium is studied. Two mechanisms contributing to the deviation o f the pail-distribution function from axial symmetry around the pair asisare ~dentified. The one is clue to the anisotropy o f the phonon dispersion relations and is treated in 21 gen...

The quadrupole and sextupole magnets o f LEP w i l l be measured by the harmonic c o i l method. I n order t o achieve precise, r e l i a b l e and r a p i d measurements o f the strength, f i e l d q u a l i t y and magnetic a x i s o f the lenses, a f u l l y autonomous, microprocessor c o n t r o l l e d system has been developed. Remote cont r o l o f the alignment o f the magnets on t h e ...

d) True since n log n ∈ O(n) (because n log n n → 0 when n→ ∞). Assume f(n) ∈ O(n log n). By transitivity of O-notation, f(n) ∈ O(n). e) False. Find f(n) ∈ Ω(n) such that f(n) 6∈ Θ(n). For example n 6∈ Θ(n), since n 6∈ Ω(n) (because n n → 0 when n→∞). f) True. Assume f(n) ∈ Θ(n). By def. of Θ, f(n) ∈ Ω(n) and hence n ∈ O(f(n)). Now, log n ∈ O(n) since log n n → 0 when n → ∞. By transitivity of ...

cell-mediated immune (cmi) s t a t us and sub- popul at i ons o f pe r ipheral b l ood lymphocytes were investigated in one hundre d volunt a ry blood donors who were car r ier s of ag • he s a signi f i c ant decr e ase of t otal t-cells observed in hb ag carri e rs as compared t o normal controls. the percens t age o f active t-cells a nd b-lymphocytes did not d i f f e r signi f icant ly bet...

A r e f u t a t i o n a l sys tem o f l o g i c f o r a l a n g u a g e o f o r d e r w i a p r e s e n t e d . T h i s langage i s a s l i g h t m o d i f i c a t i o n o f C h u r c h ' s \ c a l c u l u s w i t h t y p e s . The sys tem i s c o m p l e t e , i n the sense t h a t a r e f u t a t i o n o f a s e t o f sen tences e x i s t s i f and o n l y i f t h i s s e t does n o t possess...

Early detection o f residualpopulations o f domestic triatomine bugs that survive insecticide treatment is a key component o f successful evaluation and vigilance fo r Chagas disease control. We have recently demonstrated that sheets o f paper, tacked on to the walls o f infested houses, can become streaked with the faeces o f triatomine bugs and thus reveal thepresence o f an infestation. In t...