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Biomedical subjects

B Berggren

Publications and source records attributed to B Berggren.

7 recordsLinked to original sources
PubMed2004

Full scale implementation of the nutrient limited BAS process at Södra Cell Värö.

A combination of the suspended carrier biofilm process and the activated sludge process (biofilm-activated sludge--BAS) has been shown to be very successful for the treatment of different types of pulp and paper mill effluents. The robust biofilm pre-treatment in combination with activated sludge results in a stable, compact and highly efficient process. Recent findings have shown that nutrient limited operation of the biofilm process greatly improves the sludge characteristics in the following activated sludge stage, while minimising sludge production and effluent discharge of nutrients. The nutrient limited BAS process was implemented at full scale at the Södra Cell Värö kraft mill and taken into operation in July 2002. After start-up and optimisation over about 5 months, the process meets all effluent discharge limits. The removal of COD is close to 70% and the removal of EDTA greater than 90%. Typical effluent concentrations of suspended solids and nutrients during stable operations have been 20-30 mg/L TSS, 0.3-0.5 mg/L phosphorus and 3-5 mg/L nitrogen. The sludge production was 0.09 kgSS/kg COD removed and the sludge volume index was 50-100 mL/g.

Biofilms↗
PubMed1992

Expression of birch pollen-specific IgE-binding activity in seeds and other plant parts of birch trees (Betula verrucosa Ehrh.).

Dot immunoblotting of crude extracts of various aerial parts of birch trees, using patient serum rich in birch pollen IgE, showed IgE-binding activity in leaves, buds, twigs, seeds, bark, and old male catkins. Seed extracts analysed by SDS-PAGE, electroblotting to nitrocellulose and immune detection using isotope-conjugated anti-IgE verified the presence in seeds of an IgE-binding protein of an approximate molecular weight of 12 kD, distinct from the major allergen (molecular weight 17 kD) of Betula verrucosa pollen. The allergen of birch seeds was readily leachable from the seeds. Many of the birch plant part extracts were active in RAST inhibition using birch pollen RAST discs, but showed low potency relative to the allergenicity of birch pollen allergens.

Allergens↗
PubMed1985

Pes anserinus transfer for the unstable knee. A 7-year follow-up of 43 cases of ruptured anterior cruciate ligament.

On average 7 years postoperatively, we evaluated 43 consecutive patients who had had pesoplasty for chronic injury of the anterior cruciate ligament. Fourteen patients had undergone further surgery during the follow-up period; ten of these had extra- or intra-articular stabilizing procedures, and eight meniscectomies were performed after the index operation. At follow-up of the 33 knees that had not had additional stabilizing surgery, only one-third of the knees had normal radiograms, and the majority had anterolateral rotational instability (pivot shift) which, however, did not exclude satisfactory knee function. We conclude that improvement after transfer of the pes anserinus tendons was due to the simultaneous meniscectomy; we do not believe that the pesoplasty changed the natural course of the chronic rupture of the anterior cruciate ligament.

Adolescent↗
PubMedDate not supplied

Alcohol abuse and superego conflicts.

This paper reports the author's experiences with alcohol abusers in their initial or premorbid phase. The emphasis is on their superego conflicts and how these conflicts relate to their alcohol abuse. The adaptational function of their heavy drinking pattern is to neutralize an archaic persecutive superego through an oral-sadistic counterattack. The drinking is an attempt to reach inner structural change, which is successful during the first moments of intoxication, but often backfires when the ego strength is lessened under the influence of alcohol.

Adult↗