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Poly (lactic acid), PLA, is a biodegradable thermoplastic that can be produced from renewable resources. The polymer is of interest for production of films for packaging applications. However, plasticization of PLA is required in order to obtain films with sufficient flexibility. PLA was blended with tributyl citrate (TbC) and two oligomers of TbC that were synthesized by transesterification of tr

By precipitating a complex salt Ly(OS)(8) of the positively charged protein lysozyme and the anionic surfactant octyl sulfate OS-, one can generate a true ternary system: water-Ly(OS)(8)-NaOS. Using NMR diffusometry and U spectroscopy measurements the thermodynamic parameters of the association processes have been determined. The solubility product of the complex salt, K-s, is 10-(28) M-9.(1) On a

In order to advance the understanding of which types of regional innovation system represent effective innovation support for what kinds of industry in different regions analyses must be contextualized by reference to the actual knowledge base of various industries as well as to the regional and national institutional framework, which strongly shape the innovation processes of firms. Of special im

Abstract is not available

A variant of the cysteine protease inhibitor, cystatin C, forms amyloid deposited in the cerebral vasculature of patients with hereditary cerebral hemorrhage with amyloidosis, Icelandic type (HCHWA-I), leading to cerebral hemorrhages early in life. However, cystatin C is also implicated in neuronal degenerative diseases in which it does not form the amyloid protein, such as Alzheimer disease (AD).

Objectives: The aim of the present study was to analyze the effect of an enhanced systematic dose of nicotine on osseointegration of titanium implants. Material and methods: Sixteen female rabbits received either nicotine ( n = 8) or saline ( n 8) administered subcutaneously via mini-osmotic pumps for 2 months. The pump delivered 6 mg/kg/min of nicotine for the animals in the test group. Blood was

1. The mechanisms by which cAMP stimulates Ca(2+)-dependent insulin secretion were investigated by combining measurements of whole-cell Ca2+ currents, the cytoplasmic free Ca2+ concentration ([Ca2+]i) and membrane capacitance in single mouse B-cells maintained in tissue culture. 2. Cyclic AMP stimulated exocytosis > 4-fold in whole-cell experiments in which secretion was evoked by intracellular di

Popular Abstract in Swedish Många olika proteiner kan produceras med hjälp av rekombinanta DNA tekniker. Ofta sätts vektorn som kodar för det rekombinanta proteinet in i bakterien E. coli, då den är välkänd. Det är viktigt att producera mycket celler för att uppnå hög produktivitet. Detta görs genom att näringsämnet (ofta glukos) tillsätts kontinuerligt till en så kallad semisats reaktor. TillsatsThe recombinant DNA techniques have made it possible to produce many different proteins for a wide range of applications. The vector encoding for the recombinant protein is often inserted in the bacterium E. coli as it is a well studied and a well-known organism. To achieve a high productivity, it is important to reach a high cell density. This is obtained through fed-batch operation where the nut

Two different antennas for use in implanted pacemakers are analyzed by simulation and measurement. The analysis was made with an FDTD-code. The simulations and measurements show good agreement. The SAR values for both the antennas are within the limits recommended by ICNIRP when the antenna is fed with 25 uW.

The middle part of the Cretaceous represents a time of high diversity and rapid rates of dental evolution in lamniform sharks. Several species had a very wide spatial distribution with recorded occurrences in both hemispheres. We have examined isolated teeth of Cretoxyrhina and Cardabiodon from eastern Russia, Mangyshlak in Kazakhstan, and the Western Interior of the USA. The material indicates th

Popular Abstract in Swedish Symtom på infektion är vanligt hos små barn och deras familjer. Med stigande ålder minskar antalet dagar med symtom, men ökar igen hos föräldrar till små barn. Ungefär en fjärdedel av symtomdagarna ledde till frånvaron från barnomsorgen för barnen, men ersättning från socialförsäkringen användes bara i en tredjedel av dagarna. Bland de vuxna ledde 12% av symtomdagarna tInfectious symptoms in infants and their families are common. With rising age the number of symptom day decreases, but increases again for the parents of infants. About one quarter of the symptom days lead to absence from daycare among the infants but the social remuneration system was used by the parents only in 1/3 of the absence days. Among the adults 12% of the symptoms days lead to absence fr

A misrepresentation prevalent in the recent literature concerning the selectivity of an integrated transformer resonator compared to an inductor equivalent, i.e. an inductor resonator constructed from the same metal windings, is clarified.