11 research outputs found
Rapid Reocclusion of Left Primary Bronchus by Fibrinomucinous Cast in a Case of Large Cell Lung Cancer
This report describes a case of large cell carcinoma of the lung in a patient whose left primary bronchus became completely occluded by a fibrinomucinous cast that recurred within 24 hours despite extensive lavage and removal of the cast via flexible bronchoscopy. The primary tumor involved the aortopulmonary window and was affixed to the pulmonary artery and the aorta, arising from the left upper lobe and extending to the left primary bronchus. The occurrence of a large fibrinous endobronchial cast removed by flexible bronchoscopy forceps, such as we report here, is extremely rare
Investigation and demonstration of the durability of air plasma pre-treatment on polypropylene automotive bumpers
Higher utilisation of low-density materials such as polymers and polymer composites is a pre-requisite for the lightweight vehicle of the future. Of the commodity polymers polypropylene (PP) is by far the most attractive for the automotive industry. Additionally, PP can be utilised as a glass or mineral filled composite which may be used for semi-structural applications.
A major problem is that PP (along with other polyolefins) has a non-polar surface chemistry which means the wetting characteristics of components made from this material are poor. Ultimately, this will result in poor adhesion of paints, coatings or adhesive bonding products. This problem has been overcome in the majority of instances by treating the surface of the substrate in order to alter the surface chemistry.
PP has found extensive use as films and flat sheets and hence certain techniques such as flame and corona have been favoured despite both having problems of heterogeneous or patchy treatment across a surface. However, for complex 3-D automotive shapes, such as bumpers, these methods are less useful. While flame treatment for example is widely used it has several disadvantages in a commercial volume production environment which all centre around the potential for the part to undergo overtreatment, incipient melting or melting during machine stops etc., as well as the hazards associated with combustible gas. An alternative method is atmospheric plasma pre-treatment.
This work has investigated the effect of a forced air plasma pre-treatment on surface chemistry and bond strength of a commercial grade polypropylene material.
The plasma head was attached to a robot arm which makes it highly suited to continuous production environments and can treat complex surfaces. A range of translation speeds were investigated and the surface chemistry and topography of the treated surfaces were examined using atomic force microscopy and X-ray photoelectron spectroscopy. The processing was further optimised by single lap-shear testing.
An optimised set of parameters was used to pre-treat and bond a full size automotive bumper assembly with a polyurethane (PU) adhesive. Bumpers were then subjected to a standard automotive range of climate conditioning as well as soaking at -20degreesC and 70degreesC before front centre impact testing. Parts pre-treated and bonded using this pre-treatment and adhesive system, successfully passed all the required standard automotive impact tests.
For added benefit, it was also found that the open time of the pre-treatment was 1 week depending on storage conditions. (C) 2004 Elsevier Ltd. All rights reserved
The Occurrence of Stiff Person Syndrome in a Patient With Thymoma: Case Report and Literature Review.
Stiff-person syndrome (SPS) is a rare disorder that affects the central nervous system, being characterized by intermittent episodes of muscle spasms, rigidity, and a significant increase in morbidity and mortality. We report a 29-year-old patient, with left-sided chylothorax and thymoma, who presented with truncal, lower extremities stiffness and painful cramps alleviated by diazepam and opiates. His clinical picture was suggestive of SPS secondary to invasive thymoma. This syndrome is best approached by its early recognition and prompt treatment since a missed diagnosis can have deleterious outcome. An intensive search for the underlying etiology is of utmost importance in the management of SPS. A review of the current literature is also included in this manuscript
sasview: SasView 4.0 Beta 1
Beta Release
This release is a beta, meaning it is intended as a relatively stable test release prior to the final 4.0 production release. There are many improvements over the last production release (3.1.2) as detailed in the previous alpha release notes. The main improvement is the restructuring of the models interface meaning that user supplied models are written in the same way as core models and can be added without rebuilding SasView. User models can also take advantage of polydispersity and GPU acceleration in the same way as core models.
Bug Reporting
Please support the project by reporting bugs that you find to [email protected]
All the known bugs/feature requests can be found at: http://trac.sasview.org/report/3
Regular developer builds are also available from https://jenkins.esss.dk/sasview/ if you wish to test the very latest (most likely unstable) versions of SasView.
New Features
This beta release adds support for the magnetic and multilevel models of 3.1.2 along with a host of bug fixes found in the alpha.
Model package changes and improvements
All 3.1.2 models now available in new interface
Old custom models should now still work
'''NOTE:''' These will be deprecated in a future version. Old custom models should be converted to the new model format which is now the same as the built in models and offers much better support.
Custom model editor now creates new style models
Custom model editor supports better error checking
Documentation improvements
Continued general cleanup
Other improvements/additions
Support for new canSAS 2D data files added
Plot axes range can now be set manually as well as by zooming
Plot annotations can now be moved around after being placed on plot.
The active optimizer is now listed on the top of the fit panel.
Linear fits now update qmin and max when the x scale limits are changed. Also the plot range no longer resets after a fit.
Bug fixes
Fixes bug #511 Errors in linearized fits and clean up of interface including Kratky representation
Fixes bug #186 Data operation Tool now executes when something is entered in the text box and does not wait for the user to hit enter
Fixes bug #459 plot context menu bug
Fixes bug #559 copy to clipboard in graph menu broken
Fixes bug #466 cannot remove a linear fit from graph
Numerous bugs introduced in the alph
What's in a name? Ages and names predict the valence of social interactions in a massive online game
Gender and Organizations: A Selective Review and a Critique of a Neglected Area
This paper has two linked tasks: one strategic, the other tactical. The first is to provide a critical review of the state of knowledge within organization theory of the topic of gender and organizations. This is seen as a necessary project both because of the relative neglect of the topic and the scatter and variety of relevant literature. A second task, that is tactical in nature, is the reapplication of the typology of organizational analyses developed by Burrell and Morgan. The topic is reviewed in terms of functionalist, interpretive, radical structuralist, and radical humanist paradigms, together with the consideration of feminist critiques. Specific discussion is given to the questions of work and the division of labour, power and authority, and sexuality. The paper is concluded with a brief analysis of the implications of this literature for the general development of organization theory, and the specific implications for women and men researchers