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Electrostatic effects often dominate the behavior of charged surfactant systems. While descriptions on the level of the Poisson-Boltzmann equation are successful in describing many important features of such systems, they cannot predict those specific ion effects arising when changing counterions of the same valency and they often fail in predicting effects due to changing from a monovalent to a d
Hexahydrophthalic anhydride (HHPA; CAS No. 13149-00-3) is a highly allergenic compound commonly used in the chemical industry. Guinea pigs and rats were exposed to [3H2]HHPA by inhalation for 3-8 h and were killed at various intervals during 7 days. The tissue distribution of non-volatile and covalently bound radioactivity was studied by autoradiography. Tissue bound radioactivity was mainly found
The report describes three investigations of emissions from alkali attack on adhesives and floorings. The investigations show that low alkali levelling compounds, based on calcium aluminate cement, can act as a protection against secondary emissions of 1-butanol and 2-ethylhexanol, provided that the humidity does not exceed a critical level, which with some safety margin is recommended to be 90% R
The development of real-time PCR thermal cycles in the late 1990s has opened up the possibility of accurate quantification of microorganisms in clinical, environmental, and food samples. However, a lack of suitable sample preparation methods that allow rapid quantification of the nucleic acids, remove PCR inhibitors, and prevent false-positive results due to DNA originating from dead cells has lim
The influence of the shear on the lamellar phase, L, of the system C10E3/D2O was studied along an isoplethal path (40 wt.% C10E3) in the temperature range 25-42degreesC. A dynamic phase diagram was determined by steady-state rheometry, where by shear action the lamellar phase was transformed into multilamellar vesicles (MLVs) ("onions"). The location of "onions" in the dynamic phase diagram, depen
We present a model that explains the anomalous intensity ratios betweeneach of two very bright UV lines of Fe II at 2507 Å and 2509Å and its corresponding satellite line, observed in HST spectra ofa compact gaseous condensation (blob B) in the vicinity of the starprotect eta Car.The model is based on the assumption that the FeIItransitions have a substantial optical thickness, which varies as ares
In this paper an extension of the q-deformed Volterra equation associated with linear rescaling to the general non-linear rescaling is obtained.
Although long-acting inhaled beta(2)-agonists improve various outcome measures in COPD, no double-blind study has yet shown a significant effect of these drugs on exercise capacity. In a randomized, double-blind, placebo-controlled, crossover study, patients received formoterol (4.5,9, or 18 mug b.i.d via Turbuhaler(R)), ipratroplum bromide (80 mug t.i.d via pMDI with spacer), or placebo for I wee
The subject of this thesis is the pushforward map on compactly supported distributions induced by a smooth mapping. Being the adjoint of the natural pullback operation on the class of smooth functions, the pushforward map is always well-defined, and as such it must be regarded as one of the fundamental operations of distribution theory. This thesis has two main aims: The first of these is to give
Deregulation of the phosphatidylinositol 3-kinase (PI3K) pathway either through loss of PTEN or mutation of the catalytic subunit alpha of PI3K (PIK3CA) occurs frequently in human cancer. We identified PIK3CA mutations in 26% of 342 human breast tumor samples and cell lines at about equal frequency in tumor stages I to IV. To investigate the relationship between PTEN and PIK3CA, we generated a coh
This paper is the third in a series which recounts experiences in a project conducted in a newly created department of the University of Portsmouth, following a faculty reorganization. In this context, the 25 staff of the department wished to explore possibilities ofr development in a range of areas of work. A variant of the framework for Strategic Systemic Thinking (SST) was used to support such
This paper offers a method for quantifying the global exchange of (natural) space and (labor) time underlying the economic success of the British textile industry in the late 18th and early 19th century. Using historical statistics on inputs of land and labor embodied in cotton and wool production, respectively, estimates are made of the amount of British land and labor that were ‘saved’ by displa
The amount of software around us has increased incredibly. A lot of the new software is integrated into different devices, for example, home electronics, cars and cell-phones. As existing and new systems evolve through different maintenance releases, they naturally inherit functionality and characteristics from previous releases and therefore become what we refer to as legacy systems. Often new fu
