Primary powders of Bacillus sphaericus strain S2 isolated from soil samples in Brazil, and strain 2362 were produced in a 14 liter fermentor. Growth patterns and sporulation observed in three trials with strains S2 and 2362 in the fermentor were similar. Second-instar larvae of Culex quinquefasciatus, Anopheles albimanus, Anopheles quadrimaculatus, and Aedes aegypti exposed for 48 hr to strain ...

Background and Objectives: Making stacking gels for polyacrylamide gels in the laboratory by conventional methods is laborious and time consuming. Considering the role of temperature in polyacrylamide gels with respect to electrical resistance and viscosity, we assumed that decreasing the temperature would cause an increase in electrical resistance and viscosity.  Ultimately, a downward tempera...

Hydrogels (hylans AU1c ) containing divinyl sulfone (DVS)-crosslinked hyaluronan (HA) are potentially useful implant biomaterials because of their non-cytotoxicity and -antigenicity. However, to successfully fulfill their intended role in vivo, their properties (e.g., mechanics, pore size, surface topography, hydrophilicity, swelling) must be modulated to match the demands of the target applica...

Nearly 20 years ago Quinn and Martin presented a novel blackbody design with an absorbing end face and highly reflecting side walls. This blackbody had the considerable advantage of being less sensitive to temperature gradients along the side walls (potentially of several degrees Celsius) compared to an all-black cavity. Recent work at NPL has developed this concept further, laying out the conc...

Photothermal radiometry has been proved being a versatile tool for the non-contact and non-destructive material inspection in near-surface zones. Although these near-surface areas represent only a few percent of the workpiece’s volume, they influence significantly its quality, functional behaviour, reliability and life time. In particular, they determine decisively the mechanical properties of ...

[1] We present new evidence for volcanic eruptions and lava flow emplacement on Venus within the last several decades. An integrated study of a radar‐dark lava flow unit in Bereghinia Planitia on Venus (∼28°E, ∼39°N) based on Magellan data obtained in 1993 reveals a significant apparent microwave thermal emission excess, consistent with increased subsurface temperature due to very recent lava f...

Broadband thermal infrared heterodyne spectro-radiometry using an external cavity quantum cascade laser as a tunable local oscillator has been performed over a frequency range of more than 100 cm(-1) at a central frequency of 1190 cm(-1). Heterodyne spectro-radiometry is demonstrated for two local oscillator tuning modes: broadband tuning for transmission and emission spectroscopy of broadband ...

Passive Microwave Radiometry has provided an important contribution to global Numerical Weather Prediction and climatology since the mid-seventies using data using instrumentation such as AMSUA&B and MHS. It is now widely considered that further improvements can be made by addressing the uncertainties associated with ice clouds for which there is a lack of suitable global observations. Sub mill...