20433. Please contact Patricia Sader, room N8-040, telephone 202-473-3902, fax 202-522-1153, Internet address psader)worldbank.org. June 1996. (29 pages) The Polscy Research Working Paper Series disseminates the findings o[ work in progress to encourage the exchange of ideas about de l,elopment issues

Summary. The effect of rapid freezing and thawing on the survival of 2-cell rabbit embryos was examined. When embryos in 2\m=.\2m-propanediol were directly plunged from room temperature to liquid nitrogen some of them survived after thawing (8%) but only if they had been pretreated by exposure

Abstract: A donor-acceptor compound based on N,N,N′,N′-tetramethyl-p-phenylene-diamine and 1,2,4,5-tetracyanobenzene (TMPD:TCNB) has been synthesized. The crystal structure of the black 1:1 complex formed between TMPD and TCNB has been determined by single crystal X-ray diffraction at room

ABSTRACT Room temperature time-resolved photoluminescence (TRPL) studies of multiple quantum well (MQW) structures of the binaries GaN and AlN grown by molecular beam epitaxy are reported. The eventual application of these structures is for GaN intersubband IR light emitters. However

exhalation valve, Fio2, Vt, and airway pressure were measured (n 3) while ventilat-ing a CO2-producing test lung at 8 breaths/min and an inspiratory/expiratory ratio of 1:2, with and without a

An InGaAsN single-layer quantum dot ͑QD͒ laser structure was grown on GaAs substrates by metalorganic chemical vapor deposition ͑MOCVD͒. The ridge-waveguide edge emitting laser diodes ͑LD͒ were fabricated and characterized. We demonstrate room-temperature operation of InGaAsN QD lasers

Medical electron accelerators for cancer radiation therapy operate at energies above the threshold of neutron production (8-10 MeV) produce secondary neutron radiation via (γ, n) and (e, e’n) reactions in the various materials of the linear accelerator (linac) head. The aim of this work

Sulfonamide drugs which have brought about an antibiotic revolution in medicine are associated with a wide range of biological activities. We have synthesized a series of α-tolylsulfonamide, 1-11 and their substituted N,N-diethyl-2-(phenylmethylsulfonamido) alkanamide derivatives, 12

The interfacial behavior of the bonded p-GaP/n-GaAs wafers, with activated surfaces, that use an Ar fast atom beam was investigated. The bonding strength of the interface was 9.8 MPa at room temperature, and the GaP was fractured and remained on the GaAs following the tensile test. Two amorphous

was 62 nA mM1 and the limit of detection was 28.8 mM. The optimum ionic liquid electrolyte carrier was found to be 1-butyl-3-methylimidazolium nitrate, where the biosensor was made by electrodeposition of the redox mediator, poly(neutral red), and the enzyme was immobilized by cross