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The Effect of Transfer Port Geometry on Scavenge Flow Velocities At High Engine Speed

2-D LDV measurements were performed on two different cylinder designs in a fired two-stroke engine running with wide-open throttle at 9000 rpm. The cylinders examined were one with open transfer channels and one with cup handle transfer channels. Optical access to the cylinder was achieved by removing the silencer and thereby gain optical access through the exhaust port. No addition of seeding wa

System failure, innovation policy and patents: Fuel cells and related hydrogen technology in Norway 1990-2002

The empirical focus of this article is technological innovation activities in the emerging field of fuel cells and related hydrogen technology in Norway from 1990 to 2002. In this period, four comparatively large-scale research and development projects and a number of smaller projects aimed at development of fuel cells technology were undertaken, resulting in many inventions that were subsequently

Influence of antioxidants in virgine olive oil on the formation of heterocyclic amines in fried beefburgers.

An association between the intake of heterocyclic amines (HAs) and the development of cancer has been observed in some epidemiological studies, while in other studies no such correlation has been found. HAs are mutagenic/carcinogenic compounds formed at low levels via the Maillard reaction and a free radical mechanism during cooking of animal tissue. The addition of pure antioxidants or foods cont

Moisture Induced Stresses in Timber Structures

Wood is a hygroscopic material; always striving to reach equilibrium with the surrounding air, and consequently the moisture content is different in different climate conditions. The strength of wood is directly dependent on the moisture content, lower moisture content leads to increasing strength. Generally, state moisture equilibrium is seldom obtained because the moisture transport in wood is v

A longitudinal study integrating population, care and social services data. The Swedish National study on Aging and Care (SNAC)

Background and aims: A large, national, long-term, longitudinal, multi-purpose study has been launched in Sweden - the Swedish National study on Aging and Care (SNAC). The study involves four research centers collecting data in four different areas of Sweden. Methods: The study consists of two parts: the population part and the care and services part. In the population part, a large, representativ

Svenskhetens historia

Recension av Patrik Hall, Den svenskaste historien. Nationalism i Sverige under sex sekel.

Finite Element Procedures in Modelling the Dynamic Properties of Rubber

Popular Abstract in Swedish Gummi är inte enbart olinjärt elastiskt, det är också beroende av töjningshastighet och töjningsamplitud. Kombinationen av de olinjära elastiska egenskaperna och amplitudberoendet behandlas av de modeller som föreslås i avhandlingen. Modellerna är utformade så att de snabbt ska kunna implementeras i industrin.Rubber is not only a non-linear elastic material, it is also dependent on strain rate, temperature and strain amplitude. The non-linear elastic property and the strain amplitude dependence give a non-linear dynamic behavior that is covered by the models suggested in this thesis. The focus is on a finite element procedure for modelling these dynamic properties of rubber in a way that is easy to ado

Similar group mean scores, but large individual variations, in patient-relevant outcomes over 2 years in meniscectomized subjects with and without radiographic knee osteoarthritis.

Background Epidemiological studies have, so far, identified factors associated with increased risk for incident or progressive OA, such as age, sex, heredity, obesity, and joint injury. There is, however, a paucity of long-term data that provide information on the nature of disease progression on either group or individual levels. Such information is needed for identification of study cohorts and

Long-term improvement of quality of life during growth hormone (GH) replacement therapy in adults with GH deficiency, as measured by questions on life satisfaction-hypopituitarism (QLS-H)

Questions on Life Satisfaction-Hypopituitarism (QLS-H) is a new quality-of-life (QoL) questionnaire developed for adults with hypopituitarism. To determine the effects of long-term GH treatment on QoL, we evaluated QLS-H Z-scores in 576 adult patients with GH deficiency (GHD) enrolled in HypoCCS, an international observational study, using data from five countries in which comparative QLS-H data f

The dysmetabolic syndrome

The first unifying definition for the metabolic syndrome was proposed by WHO in 1998. In accordance to this, patients with type 2 diabetes mellitus or impaired glucose tolerance have the syndrome if they fulfil two of the criteria: hypertension, dyslipidaemia, obesity/abdominal obesity and microalbuminuria. Persons with normal glucose tolerance (NGT) should also be insulin resistant. About 40% of

Ärftlighetsforskningens gränser : Individer och institutioner i framväxten av svensk genetik

Popular Abstract in Swedish Den moderna genetiken tar sin början kring sekelskiftet 1900 då de mendelska lagarna återupptäcktes. Den tidiga utvecklingen skedde i många länder i nära anslutning till den praktiska växtförädlingen, så även i Sverige där det redan fanns en framgångsrik växtförädling genom Sveriges utsädesförenings verksamhet i Svalöf. Här introducerade botanisten Herman Nilsson-Ehle mIn the first part of the 20th century genetics developed into an important research field. The aim of this study is to follow and analyse the transformation of genetics from its origin within an agricultural context to an academic discipline in Sweden (ca. 1900-1960). Mendelism was introduced as a methodology in plant breeding at the plant breeding station in Svalöf during the first decade of the

Sulfonylurea-Mediated Stimulation of Insulin Exocytosis via an ATP-Sensitive K(+) Channel--Independent Action.

Several reports indicate that hypoglycemic sulfonylureas augment Ca(2+)-dependent insulin secretion via mechanisms other than inhibition of the ATP-sensitive K(+) channel. The effect involves a 65-kd protein in the granule membrane and culminates in intragranular acidification. Lowering of granule pH is necessary for the insulin granule to gain release competence. Proton pumping into the granule i

Growth interaction between different tumor populations in human endometrial adenocarcinoma growing in nude mice

In these studies of tumor cell growth interaction we have used two tumors differing from each other in sensitivity to estradiol, transplanted to opposite sites of the same nude mice. In the first experiment we found that the growth of an estradiol-sensitive tumor may be delayed by the presence of an estradiol-resistant tumor in the same animal. Although the growth pattern was changed, proliferativ