1,055 research outputs found
Microwave state transfer and adiabatic dynamics of magnetically trapped polar molecules
Cold and ultracold polar molecules with nonzero electronic angular momentum
are of great interest for studies in quantum chemistry and control,
investigations of novel quantum systems, and precision measurement. However, in
mixed electric and magnetic fields, these molecules are generically subject to
a large set of avoided crossings among their Zeeman sublevels; in magnetic
traps, these crossings lead to distorted potentials and trap loss from electric
bias fields. We have characterized these crossings in OH by
microwave-transferring trapped OH molecules from the upper |f; M = +3/2> parity
state to the lower |e; +3/2> state and observing their trap dynamics under an
applied electric bias field. Our observations are very well described by a
simple Landau-Zener model, yielding insight to the rich spectra and dynamics of
polar radicals in mixed external fields.Comment: 5 pages, 4 figures plus supplementary materia
Keywords in the Australian context
Borrowing the title of Raymond Williams’ famous study, the following reflections – sometimes collective and sometimes individual – are based on a series of “Keywords”, specifically: “fear” “community” and “creativity”. By reflecting on the meanings these words have for us today, we attempt to capture their dialogical character, posing them as sites of contestation and struggle, and thereby developing a language of both resistance and hope in the face of neoliberal and neoconservative attacks on education. These reflections continue a series of arguments in defence of the profession first presented in the publication “Only connect”: English teaching, schooling and community in 2006
Equipment considerations: dry granual fertilizer
A review of application equipment considerations can help ensure that your nitrogen fertilizer is properly applied. This article focuses on dry granular fertilizers and is the first in a series of three articles about nitrogen fertilizer application and equipment. Because of varying physical properties of dry fertilizer materials, it is important to consider material distribution across the swath as well as application rate
Equipment considerations: liquid fertilizer
A review of application equipment considerations can help ensure that your nitrogen fertilizer is properly applied. This article focuses on liquid fertilizers and is the last in a series of three articles (other two in April 9, 2001, Integrated Crop Management issue) about nitrogen fertilizer application and equipment. A primary consideration for equipment is the relatively high application volumes required. For example, a 150-lb N/acre application of 28 percent UAN solution requires an application of 50 gal/acre
Low-energy molecular collisions in a permanent magnetic trap
Cold, neutral hydroxyl radicals are Stark decelerated and confined within a
magnetic trap consisting of two permanent ring magnets. The OH molecules are
trapped in the ro-vibrational ground state at a density of
cm and temperature of 70 mK. Collisions between the trapped OH sample
and supersonic beams of atomic He and molecular D are observed and
absolute collision cross sections measured. The He--OH and D--OH
center-of-mass collision energies are tuned from 60 cm to 230 cm
and 145 cm to 510 cm, respectively, yielding evidence of reduced
He--OH inelastic cross sections at energies below 84 cm, the OH ground
rotational level spacing.Comment: 4 pages, 4 figure
Methods for Treating Congestive Heart Failure
The invention features methods of treating or preventing congestive heart failure by administering a polypeptide containing an epidermal growth factor-like domain encoded by a neuregulin gene
Methods for treating congestive heart failure
The invention features methods of treating or preventing congestive heart failure by administering a polypeptide containing an epidermal growth factor-like domain encoded by a neuregulin gene
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