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Influence of impermeable components on the permeation of aqueous 1-propanol mixtures in hydrophobic pervaporation
Hydrophobic pervaporation is rarely considered in the biotech industry despite several potential advantages and some applications. This is related to fact that the majority of studies have been with binary feed systems, while real feed mixtures are often multi-component and might contain impermeable components, such as salts and sugars. In order to successfully optimise hydrophobic pervaporation,
Industrial applications of ultrafiltration in pharmaceutical biotechnology
Ultrafiltration with diafiltration is a state-of-the-art process used to separate solutions containing high and low molecular weight solutes. The focus of this paper is on the different concepts of ultrafiltration with diafiltration - batch, continuous and counter-current - and the potential realization of diafiltration on an industrial scale in pharmaceutical biotechnology. Two case studies will
Food & bev : anyone for a tasty beverage?
Taste is the most important criteria in evaluating the quality of wine and beer. Alfa Laval's Frank Lipnizki, Carl-Erik Nielsen, Robert Betcke and Jose Caprio highlight the potential that membrane processes offer in maintaining and improving taste during production.
Membrane applications in the pulp and paper industry : Experience on lab, pilot and industrial scale
Closing the loops in the pulp and paper industry with membrance technology
Membrane technology is a relative new technology in the pulp and paper industry with interesting applications in the water loop, the by-product loop and the chemical loop. The technology was pioneered in the pulp and paper industry by DDS Filtration, now Alfa Laval Nakskov in the 1970'ies and this article reviews the opportunities to use membrane technology in the different loops investigated over
Non-traditional roles of complement in type 2 diabetes : Metabolism, insulin secretion and homeostasis
Type 2 Diabetes (T2D) is a disease of increasing importance and represents a growing burden on global healthcare and human health. In T2D, loss of effectiveness of insulin signaling in peripheral tissues cannot be compensated for by adequate insulin secretion, leading to hyperglycemia and resultant complications. In recent years, inflammation has been identified as a central component of T2D, both
Opportunities and challenges of using ultrafiltration for the concentration of diluted coating materials
The use of cross-flow ultrafiltration for the recovery of coating material from aqueous streams started about 30 years ago with electro-deposition paint in the automotive industry. This early success can be related to both environmental and economical advantages of using ultrafiltration. Ultrafiltration recovers and concentrates electro-deposition paint on the retentate side and produces purified
Method and plant for purifying a carbohydrate rich liquid
Described is a method for preparing a purified liquid containing carbohydrates. The method comprises the steps of: hydrolysing starch to a dextrose equivalent (DE) of 10 or above, thus obtaining a liquid of carbohydrates; removing a heavy weight sludge fraction from the light weight liquid of carbohydrates using centrifugation; filtering the remaining liquid of carbohydrates, the filter being capa
Large eddy simulation of hydrogen combustion in supersonic flows using an Eulerian stochastic fields method
An Eulerian Monte-Carlo approach, the so-called Eulerian stochastic fields (ESF) method is implemented and evaluated for simulation of non-premixed hydrogen/air combustion in supersonic flows. The ESF method is integrated into a compressible flow large eddy simulation (LES) solver, and validated on a supersonic combustor with a strut as flame-holder. Comparison with experimental data and with resu
Differences in glycemic control across world regions : A post-hoc analysis in patients with type 2 diabetes mellitus on dual antidiabetes drug therapy
Objective:This post-hoc analysis of the EDGE (Effectiveness of Diabetes control with vildaGliptin and vildagliptin/mEtformin) study assessed inter-regional differences in baseline characteristics and response to treatment intensification with dual oral antidiabetes drugs (OADs) in patients with type 2 diabetes mellitus (T2DM).Methods:Patients with T2DM inadequately controlled with first-line monot
Accurate prediction tools in prostate cancer require consistent assessment of included variables
Objective: The aim of this study was to create a preoperative prediction model predicting extraprostatic tumour growth in men with clinically organ-confined disease from a prospectively collected Swedish cohort. Materials and methods: The study used data from 3386 men in the prospective multi-centre Laparoscopic Prostatectomy Robot Open (LAPPRO) trial, with 14 participating urological departments.
Unintentional Nonhunting Firearm Deaths in Sweden, 1983–2012
We examined the association between unintentional nonhunting firearm deaths and changes in firearm legislation in Sweden. There were 43 fatalities during the study time frame 1983–2012, representing 46% of all unintentional firearm deaths during the same period. The victims were predominantly young males (mean age 25 years). Slightly more than half of the deaths were caused by another person and w
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Activity and migratory flights of individual free-flying songbirds throughout the annual cycle : Method and first case study
We describe a method and device (< 1.2 g) for recording, processing and storing data about activity and location of individuals of free-living songbirds throughout the annual cycle. Activity level was determined every five minutes from five 100 ms samples of accelerometer data with 5 s between the sampling events. Activity levels were stored on an hourly basis throughout the annual cycle, allowing
High-Precision Low-Power Wireless Nodes' Synchronization via Decentralized Control
Time synchronization is crucial for wireless sensor networks (WSNs), where operations often rely on time ordering of events. WSNs are deployed in different scenarios, and therefore their timing requirements are often related to the peculiar characteristics of the specific environment they have to act in. Synchronization is anyway always an issue: transactional applications need monotonicity of the
Population-based study of survival for women with serous cancer of the ovary, fallopian tube, peritoneum or undesignated origin - on behalf of the Swedish gynecological cancer group (SweGCG)
Objective: The aim of the study was to determine survival outcome in patients with serous cancer in the ovary, fallopian tube, peritoneum and of undesignated origin. Methods: Nation-wide population-based study of women. ≥. 18. years with histologically verified non-uterine serous cancer, included in the Swedish Quality Registry for primary cancer of the ovary, fallopian tube and peritoneum diagnos
Clonal conversion of B lymphoid leukemia reveals cross-lineage transfer of malignant states
Even though leukemia is considered to be confined to one specific hematopoietic cell type, cases of acute leukemia of ambiguous lineage and patients relapsing in phenotypically altered disease suggest that a malignant state may be transferred between lineages. Because B-cell leukemia is associated with mutations in transcription factors of importance for stable preservation of lineage identity, we
Clinical outcomes of negative small-bowel capsule endoscopy for small-bowel bleeding : A systematic review and meta-analysis
Background and Aims: Small-bowel bleeding is the primary indication for capsule endoscopy (CE). Many experts advocate a "watch-and-wait" policy in negative CE. This meta-analysis examines the odds of rebleeding after negative index CE and the impact on long-term follow-up. Methods: A comprehensive literature search identified articles examining the rebleeding rate after negative CE. Demographic an
Local food in Iceland : Identifying behavioral barriers to increased production and consumption
Increased production and consumption of local food may reduce the negative environmental, social, and economic impacts of industrialized and globalized food production. Here we examined potential barriers to increasing production and consumption of food produced in Iceland. First, we developed a new framework to address the behaviors of production and consumption simultaneously, to comprehensively