Storage tests of nitrogen tetroxide and hydrazine in aluminum containers

Nitrogen tetroxide and hydrazine compatibility with aluminum alloy storage tank

LIMS: Database for livestock performance data. Version 1.2. Computer program with system documentation

The LIMS (Livestock Information Management System) software package is designed to facilitate the recording and processing of livestock data in developing countries. The package is not specialised for use with any particular species or production system, but can be used with data for any mammal species for a variety of purposes, such as research, extension and commercial production. The objective is to provide user with a computerised tool that allows them to manage complex livestock performance data set, and to provide help in livestock management without relying on specialist computer and data management support. The LIMS software package has been designed to address six key issues in management of livestock performance data, viz, balance of flexibility and standardisation of data definition, documentation and definition of data sets, assistance in deriving non-observed data (breed, parity, mating - parturition connection), data validation and error correction, reporting for animal management, and data extraction and calculation of standard performance traits for statistical analysis. In order to address these various aspects of livestock data management, the LIMS software has a modular design, with different modules addressing each of the above mentioned issues. A generic data set is distributed along with the LIMS software. LIMS is developed in the CLIPPER language. All data in a LIMS data set are stored in dBASE III + compatible data files

Intrinsic transverse parton momenta in deeply inelastic reactions

Intrinsic transverse parton momenta pT play an important role in the understanding of azimuthal/spin asymmetries in semi-inclusive deep-inelastic scattering (SIDIS) and the Drell-Yan process (DY). We review and update what is presently known about pT from these processes. In particular, we address the question to which extent data support the popular Gauss model for the pT-distributions. We find that the Gauss model works very well, and observe that the intrinsic transverse momenta in SIDIS and DY are compatible, which is a support for the factorization approach. As a byproduct we recover a simple but practical way of taking into account the energy dependence of pT-distributions.Comment: 19 pages, 11 figure

African Communitarianism and Difference

There has been the recurrent suspicion that community, harmony, cohesion, and similar relational goods as understood in the African ethical tradition threaten to occlude difference. Often, it has been Western defenders of liberty who have raised the concern that these characteristically sub-Saharan values fail to account adequately for individuality, although some contemporary African thinkers have expressed the same concern. In this chapter, I provide a certain understanding of the sub-Saharan value of communal relationship and demonstrate that it entails a substantial allowance for difference. I aim to show that African thinkers need not appeal to, say, characteristically Euro-American values of authenticity or autonomy to make sense of why individuals should not be pressured to conform to a group’s norms regarding sex and gender. A key illustration involves homosexuality

Universality of soft and collinear factors in hard-scattering factorization

Universality in QCD factorization of parton densities, fragmentation functions, and soft factors is endangered by the process dependence of the directions of Wilson lines in their definitions. We find a choice of directions that is consistent with factorization and that gives universality between e^+e^- annihilation, semi-inclusive deep-inelastic scattering, and the Drell-Yan process. Universality is only modified by a time-reversal transformation of the soft function and parton densities between Drell-Yan and the other processes, whose only effect is the known reversal of sign for T-odd parton densities like the Sivers function. The modifications of the definitions needed to remove rapidity divergences with light-like Wilson lines do not affect the results.Comment: 4 pages. Extra references. Text and references as in published versio

T. John Metz

Metz was a building consultant and was invited to evaluate the IWU library at Myers\u27 request based on Metz\u27s work building Carleton\u27s library. He recalls that Myers and Dean Hurwitz had come from institutions with significantly different libraries. He believes faculty were worried about Myers\u27 presidency because he brought in the U-Haul collection. He recalls the visit being different from other experiences because the librarians were acting more as teaching faculty than as career librarians. Metz speaks of the difficulties librarians in many institutions experience with faculty wanting grad school research-type collections and of the unsuitability of that material in an undergraduate collection. He believes Myers thought more like a collector than from the standpoint of focused collection development needs. Metz knew one Carleton faculty member who served as interim president who was a book lover and who also intervened with donors as Myers did

Lorentz invariance relations and Wandzura-Wilczek approximation

A complete list of the so-called Lorentz invariance relations between parton distribution functions is given and some of their consequences are discussed, such as the Burkhardt-Cottingham sum rule. The violation of these relations is considered in a model independent way. It is shown that several Lorentz invariance relations are not violated in a generalized Wandzura-Wilczek approximation, indicating that numerically their violation may be small.Comment: 10 pages; Proceedings of the workshop "Recent Advances in Perturbative QCD and Hadronic Physics", July 20-24, 2009, at ECT*, Trento (Italy), in honor of Anatoli V. Efremov on the occasion of his 75th birthday; to appear in Mod. Phys. Lett.

Aliquoting structure for centrifugal microfluidics based on a new pneumatic valve

We present a new microvalve that can be monolithically integrated in centrifugally driven lab-on-a-chip systems. In contrast to existing operation principles that use hydrophobic patches, geometrically defined capillary stops or siphons, here we present a pneumatic principle. It needs neither additional local coatings nor expensive micro sized geometries. The valve is controlled by the spinning frequency and can be switched to be open when the centrifugal pressure overcomes the pneumatic pressure inside an unvented reaction cavity. We designed and characterized valves ranging in centrifugal burst pressure from 6700 Pa to 2100 Pa. Based on this valving principle we present a new structure for aliquoting of liquids. We experimentally demonstrated this by splitting 105 muL volumes into 16 aliquots with a volume CV of 3 %

CCS from industrial sources

The literature concerning the application of CCS to industry is reviewed. Costs are presented for different sectors including ``high purity'' (processes which inherently produce a high concentration of CO2), cement, iron and steel, refinery and biomass. The application of CCS to industry is a field which has had much less attention than its application to the electricity production sector. Costs range from less than $2011 10/tCO 2 up to above$ 2011 100/tCO 2 . In the words of a synthesis report from the United Nations Industrial Development Organisation (UNIDO) ``This area has so far not been the focus of discussions and therefore much attention needs to be paid to the application of CCS to industrial sources if the full potential of CCS is to be unlocked''