We demonstrated a 1 4 all-optical packet switch with all-optical header processing at a header rate of 5 Gb/s and payload rate of 10 Gb/s using injection-locking in a single Fabry–Pérot laser diode at each output port of the switch.

The advent of 8m-class telescopes has made galaxies at 1 ∼ < z ∼ < 4 relatively easy to detect and study. This is a brief and incomplete review of some of the recent results to emerge from surveys at these red-shifts. After describing different strategies for finding galaxies at z ∼ > 1, and the differences (and similarities) in the resulting galaxy samples, I summarize what is known about the ...

IN THE TITLE COMPOUND [SYSTEMATIC NAME: 2-(1-adamantyl)-4-bromo-1--methoxy-benzene], C(17)H(21)BrO, two weak intra-molecular C-H⋯O hydrogen bonds influence the mol-ecular conformation. The crystal packing exhibits C-H⋯π inter-actions, with a relatively short inter-molecular C⋯Cg contact of 3.568 (5) Å, where Cg is the centroid of the benzene ring. The crystal studied exhibited inversion twinning.

4-dodecylbenzenesulfonic acid (dbsa) has been shown to be an efficient, mild, green, stable and chemoselective brønsted acid catalyst for the synthesis of 1, 1-diacetates (acylals) of aldehydes under solvent-free conditions. the mild condition, eco-friendly, excellent yields, short reaction times and using an easily available, inexpensive and reusable catalyst are important features of this met...

A hospital based case-control study was performed to determine causes of unintentional injuries among children aged 1-4 years at home. Data were obtained by interviewing parents and guardians of 242 children at Lerdsin Hospital in Bangkok, from August to October 1999. The results showed that falls were the most common type of injuries (54.6%). The age of 2 years comprised the major group (28.9%...

The equation ż = ez + eiφz|z|2 + bz̄3 models a map near a Hopf bifurcation with 1:4 resonance. It is a conjecture by V. I. Arnol’d that this equation contains all versal unfoldings of Z4-equivariant planar vector fields. We study its bifurcations at ∞ and show that the singularities of codimension two unfold versally in a neighborhood. We give an unfolding of the codimension-three singularity fo...

We report on observations of microstructure at 4.85 and 1.41 GHz of pulsars strong enough for the observation of single pulses with time resolution between 7 µs and 160 µs. All five pulsars observed at 4.85 GHz show microstructure in a large fraction of their pulses. We confirm that microstructure seems to be a common property of the pulsar emission mechanism and not only an additional feature ...