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A common phytoene synthase mutation underlies white petal varieties of the California poppy.
The California poppy (Eschscholzia californica) is renowned for its brilliant golden-orange flowers, though white petal variants have been described. By whole-transcriptome sequencing, we have discovered in multiple white petal varieties a single deletion leading to altered splicing and C-terminal truncation of phytoene synthase (PSY), a key enzyme in carotenoid biosynthesis. Our findings underscore the diverse roles of phytoene synthase in shaping horticultural traits, and resolve a longstanding mystery of the regaled golden poppy
A remark on non-integral -adic slopes for modular forms
We give a sufficient condition, namely “Buzzard irregularity”,
for there to exist a cuspidal eigenform which does not have integral
-adic slope.Accepted manuscrip
The relation between solar cell flight performance data and materials and manufacturing data Quarterly report
Analysis of flight performance data for solar cell power systems in satellite
On the freeness of anticyclotomic selmer groups of modular forms
We establish the freeness of certain anticyclotomic Selmer groups of modular forms. The freeness of these Selmer groups plays a key role in the Euler system arguments introduced by Bertolini and Darmon in their work on the anticyclotomic main conjecture for modular forms. In particular, our result fills some implicit gaps which appeared in generalizations of the Bertolini-Darmon result to the case where the associated residual representation is not minimally ramified. The removal of such a minimal ramification hypothesis is essential for applications involving congruences of modular forms.Accepted manuscrip
Using Kotter’s Eight Stage Process to Manage an Organisational Change Program: Presentation and Practice
© 2014, Springer Science+Business Media New York. Kotter’s eight stage process for creating a major change is one of the most widely recognised models for change management, and yet there are few case studies in the academic literature that enquire into how this process has been used in practice. This paper describes a change manager’s action research enquiring into the use of this Process to manage a major organisational change. The change was initiated in response to the organisation’s ageing workforce, introducing a knowledge management program focusing on the interpersonal aspects of knowledge retention. Although Kotter’s process emphasises a top-led model for change, the change team found it was necessary to engage at many levels of the organisation to implement the organisational change. The process is typically depicted as a linear sequence of steps. However, this image of the change process was found to not represent the complexity of the required action. Managing the change required the change team to facilitate multiple concurrent instances of Kotter’s process throughout the organisation, to re-create change that was locally relevant to participants in the change process
Temperature and pressure measurement techniques for an advanced turbine test facility
A high pressure, high-temperature turbine test facility constructed for use in turbine cooling research is described. Several recently developed temperature and pressure measuring techniques are used in this facility. The measurement techniques, their status, previous applications and some results are discussed. Noncontact surface temperature measurements are made by optical methods. Radiation pyrometry principles combined with photoelectric scanning are used for rotating components and infrared photography for stationary components. Contact (direct) temperature and pressure measurements on rotating components are expected to be handled with an 80 channel rotary data package which mounts on and rotates with the turbine shaft at speeds up to 17,500 rpm. The data channels are time-division multiplexed and converted to digital words in the data package. A rotary transformer couples power and digital data to and from the shaft
Finite range corrections near a Feshbach resonance and their role in the Efimov effect
We have measured the binding energy of Li Feshbach molecules deep into
the non-universal regime by associating free atoms in a Bose-Einstein
condensate by modulating the magnetic field. We extract the scattering length
from these measurements, correcting for non-universal short-range effects using
several different methods. We find that field-dependent effective range
corrections agree well with the data.
With this more precise determination of the scattering length vs. field we
reanalyze our previous data on the location of atom loss features produced by
the Efimov effect \cite{PollackSci09} and investigate effective range
corrections to universal theory.Comment: Accepted for publication in Phys. Rev.
Surface temperature mapping with infrared photographic pyrometry for turbine cooling investigations
Surface temperature mapping with infrared photographic pyrometry for turbine cooling investigation
Land landing couch dynamics computer program
Computer programs perform landing stability studies of mechanical impact system designs for advanced spacecraft. The programs consider variation in spacecraft vertical and horizontal velocity, attitude and orientation, shock strut load-stroke characteristics, and ground coefficient of friction
Demonstration of the Zero-Crossing Phasemeter with a LISA Test-bed Interferometer
The Laser Interferometer Space Antenna (LISA) is being designed to detect and
study in detail gravitational waves from sources throughout the Universe such
as massive black hole binaries. The conceptual formulation of the LISA
space-borne gravitational wave detector is now well developed. The
interferometric measurements between the sciencecraft remain one of the most
important technological and scientific design areas for the mission.
Our work has concentrated on developing the interferometric technologies to
create a LISA-like optical signal and to measure the phase of that signal using
commercially available instruments. One of the most important goals of this
research is to demonstrate the LISA phase timing and phase reconstruction for a
LISA-like fringe signal, in the case of a high fringe rate and a low signal
level. We present current results of a test-bed interferometer designed to
produce an optical LISA-like fringe signal previously discussed in the
literature.Comment: find minor corrections in the CQG versio
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