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Interaction between tryptophan residues and hydrophobically modified dextran - Effect on partitioning of peptides and proteins in aqueous two-phase systems

Hydrophobically modified dextrans, benzoyl dextran and valeryl dextran, have been used to study the interactions between tryptophan residues and benzoyl or valeryl groups by partitioning of tryptophan, tryptophan-tryptophan, (tryptophan)3, poly(lysine, tryptophan), β-galactosidase and lysozyme in polymer aqueous two-phase systems. The two-phase systems used were polyethylene glycol (PEG)-benzoyl d

Open Embedded Control

Embedded control devices today usually allow parameter changes, and possibly activation of different pre-implemented algorithms. Full reprogramming using the complete source code is not allowed for safety, efficiency, and proprietary reasons. For these reasons, embedded regulators are quite rigid and closed concerning the control structure. In several applications, like industrial robots, there is

Thermodynamics of membrane lipid hydration

Zwitterionic or polar lipids that form lamellar phases swell in the presence of water to take up between 10 and 30 water molecules per lipid. The degree of the water uptake depends both on the state of the alkyl chains, liquid or solid, and on the nature of the polar Group. The swelling behavior has been extensively characterized on the free-energy level through measuring the relation between the

Heat transfer from a slot air jet impinging on a circular cylinder

Heat transfer from a slot air jet impinging on a cylinder shaped food product placed on a solid surface in a semi-confined area as investigated using computational fluid dynamics (CFD). Simulations of a cylinder in cross flow with the k-epsilon, k-omega and SST models in CFX 5.5 were compared with measurements in the literature. The SST model predicts the heat transfer better than the other models

Personality: A vulnerability factor in rhinitis?

Abstract: Personality traits were assessed in 63 patients with persistent allergic or non-allergic rhinitis with the Karolinska Scales of Personality, developed with the aim of measuring psychobiological vulnerability factors, and were compared with a reference group comprising a random sample of 400 sex- and age-stratified subjects. The patients' personality profile differed slightly - within one

Automatic fermentation control based on a real-time in situ SIRE (R) biosensor regulated glucose feed

Monitoring and regulation of fermentations is of a paramount industrial and academic importance in order to keep conditions optimal during the entire process. Established techniques employed today include HPLC and spectrophotometry, which both have the disadvantage that broth samples have to be drawn from the fermentor and that they often require sample pre-treatment. The objectives of this study

Svenskämnet som demokrati- och värdegrundsämne

The aim of this article is to illustrate the central position of Swedish as a schoolsubject with reference to questions of democracy, participation, and commonvalues. I argue that an expanded concept of language and text, which also comprises the aesthetic subjects, can change and broaden the subject of Swe-dish. In a historic perspective there has been a struggle between different ways of underst

CD1-dependent regulation of chronic central nervous system inflammation in experimental autoimmune encephalomyelitis.

The existence of T cells restricted for the MHC I-like molecule CD1 is well established, but the function of these cells is still obscure; one implication is that CD1-dependent T cells regulate autoimmunity. In this study, we investigate their role in experimental autoimmune encephalomyelitis (EAE), an animal model for multiple sclerosis, using CD1-deficient mice on a C57BL/6 background. We show t

The economic impact of asthma and chronic obstructive pulmonary disease (COPD) in Sweden in 1980 and 1991

This study was carried out to estimate the direct and indirect costs associated with asthma and chronic obstructive pulmonary disease (COPD) in Sweden in 1980 and 1991, and to identify trends in the use of outpatient care, drugs and inpatient care, and the development of temporary morbidity, permanent disability and mortality for asthma and COPD. Routinely published administrative and population d

Are Beautiful traffic environments safer than Ugly traffic environments?

To link aesthetics to traffic safety, the field of environmental psychology was consid-ered. A new model of driving behaviour was developed, based on Lewin’s (1951) equation, B = f (P,E) and by employing Küllers’ (1991) model of the basic emotional process. The employed model B = f (R(Road), U(Users), A(Task), P(Person)), states that driving behaviour (B) is related to the physical environment (R)

Efficacy and tolerance of a 12-week treatment with inhaled formoterol in patients with reversible obstructive lung disease

Formoterol, a new beta 2-agonist, and salbutamol were given as aerosols twice and four times daily, respectively, to patients with reversible obstructive lung disease. The study was controlled and double blind, and continued for 12 weeks. Ninety-nine patients from five study centers were included and 89 patients could be properly evaluated. The formoterol-treated patients used significantly less r

Conceptualization of solute transport using time domain reflectometry. A combined laboratory and field study

Solute transport in the unsaturated zone is a complex process. The first of the two objectives for this study was to examine how it could be conceptualized under different flow conditions. The second objective was to investigate how the time domain reflectometry (TDR) technique should be used in order to obtain high quality data from the soils studied. The TDR is an accurate instrument for water c

Incidence of a second tumor in hypopituitary patients operated for pituitary tumors

Recently, an association between increased blood levels of insulin-like growth factor I (IGF-I) and increased risks of prostate, breast, lung, and colorectal cancers has been suggested. As today adults with GH deficiency are subjected to GH substitution, there is a pressing need for baseline tumor incidence data. The aim of the study was to assess the risk for a second tumor in a cohort of 328 pat

Studenter med funktionshinder och deras erfarenheter av utbildningen vid Lunds universitet

Rapporten behandlar studenter med funktionshinder och deras utbildningserfarenheter. Dessa har kartlagts i en enkätundersökning och i en kvalitativ intervjuundersökning. Undersökningarna visade att funktionhindrade studenters samarbete med kurskamrater och lärare i allmänhet fungerade bra, men att de ibland hamnade i situationer som de uppfattade som kränkande. De vanligaste formerna av kränkning