DNA chemical and physical networks have been investigated with respect to their stability and swelling, and rheological properties. Chemical networks were prepared by cross-linking DNA with ethylene glycol diglycidyl ether (EGDE), and physical networks by association with cationic polymers. Both types of gels display strong elastic properties and have a shear thinning behaviour. Addition of cation

Popular Abstract in Swedish Inom de flesta sociologiska forskningsperspektiv tillskrivs mellanmänsklig interaktion avgörande betydelse för att förstå olika aspekter av det sociala livet. I denna studie ligger emellertid fokus på den praktiska och erfarenhetsmässiga relationen mellan människor och ting ? en relation med stor betydelse för individers identitet och sociala liv. Detta är ett ofta bortIn most sociological paradigms the importance of human interaction for the understanding of societies, is a well established fact. In this study, the focus is the interaction between human beings and material things as it is occurring in practice. Such an approach with its important consequences for understanding both social life and self, is often overlooked in studies within the field of sociolo

The paper starts with a theoretical discussion about individual versus collective behavior in urban society. The classical theories of Ferdinand Tönnies and Georg Simmel are starting points in a discussion which ends in modern theories of urbanism as a way of life. In modern urbanism three spheres of life are distinguished; the private sphere, the neighborhood sphere and the public sphere. Especia

Samhällets krav vad gäller förebyggande brandförsvar är i första hand inriktade på omsorgen om människors säkerhet och i andra hand på egendomsskyddet. I det först nämnda fallet är det brandens tidiga skede som är av intresse medan den fullt utvecklade, långvariga branden har störst inverkan på egendomsskydd. Vad gäller egendomsskyddet har det sedan länge funnits internationellt erkända metoder fö

Popular Abstract in Swedish De arida och semi-arida grässtäpperna i Norra Kina anses vara svårt drabbade av markförstöring, främst genom vind- och vattenerosion, men även genom försaltning. Den rådande uppfattningen är att markförstöring och ökenspridningsproblematiken har eskalerat sedan införandet av de ekonomiska reformerna efter 1978, bl.a. genom en expansion av den odlade arealen på tidigare This study challenges the prevailing assumption that the expansion of cultivated land areas and increasing number of livestock in the agro-pastoral regions of northern China have aggravated the process of land degradation since the start of the rural reforms in 1978. Land-use and productivity trends in the Inner Mongolia Autonomous Region (IMAR), with special attention to the Keerqin steppe region

1. The present study was undertaken to elucidate the effect of propofol on sympathetic neurotransmission in isolated human omental vessels. 2. Segments of both arteries and veins were exposed to 0, 10(-7), 10(-6), 10(-5) or 10(-4)M propofol, and studied in vitro to determine effects on: (i) isometric tension after electrical field stimulation (EFS) or after exogenous administration of noradrenalin

In arid Tunisia, a tabia system is a traditional macrocatchment water harvesting system. It consists of a runoff area, which occupies two thirds of the slope arid is traditionally used for grazing; and one to five cropped plots within U-shaped soil banks arranged in a cascade in the third downstream area. These "run-on" areas accumulate and store the occasional runoff. Each soil bank is constructe

The present investigation reports cognitive improvement following withdrawal of topiramate (TPM) maintenance therapy in two patients with intractable seizures. The first patient received a neuropsychological evaluation after 10 months of adjunctive TPM treatment and was reassessed after complete withdrawal. The second patient received a first evaluation without TPM therapy. A reassessment was cond

Knowledge of hiv/aids, exposure to hiv/aids information and appreciation of given information was studied, by a questionnaire, among 326 Kenyan and 146 Swedish teenage school students in 1994. The aim of the study was to examine differences and similarities in knowledge in the two populations and to examine which sources of information about hiv and aids the respondents had been exposed to and whi

Background: The neonatal lupus syndrome can be present as congenital heart block (CHB) or as neonatal lupus erythematosus (NLE), both seldom passively acquired autoimmune diseases. CHB starts around week 20 of pregnancy and is a lifelong event, whereas NLE is self limiting and usually starts at the 6th week of the child's age - the maximum recorded up to week 20. Case report: An asymptomatic mothe

Spectral lines observed in the Sr-filament of eta Car in the wavelengthregion 2480-10140{AA}. The lines are sorted by wavelength in table 2 andsorted according to the periodic table in table 3. Both tables areavailable in postscript format as the file tables23.ps where the sub andsuperscripts for the atomic transitions are kept.(2 data files).

Popular AbstractWhen society first perceived the environmental condition as problematic, focus was on local emissions with local consequences. Subsequently, the center of attention partly moved beyond local effect research to a broader interest in, for instance, ecocycle processes of energy, and the whole lifecycle of materials. However, technological and natural scientific analyses of these phenoThe book has two interrelated objectives. One objective is meta-theoretical and concerns the exploration of theoretical debates connected to issues of studying society and environmental problems; another objective is empirical/analytical, referring to the analysis of "green" public participation in the electricity and waste sectors in Sweden, and partly in the Netherlands as well as the UK. The me