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A model of how to calculate the load distribution for a chain drive is presented. In the model the complete standard geometry is used without any assumptions. The rollers which are in contact with the sprockets can move freely along the tooth flanks and their positions are given be force equilibrium. Since the positions of the rollers and thereby also the load distribution are dependent on the two
Measurements are presented of inclusive charm and beauty cross sections in e(+)p collisions at HERA for values of photon virtuality Q(2) > 150 GeV2 and of inelasticity 0.1 < y < 0.7. The charm and beauty fractions are determined using a method based on the impact parameter, in the transverse plane, of tracks to the primary vertex, as measured by the H1 vertex detector. The data are divided into fo
The burdens of childhood eczema are many and some can be assessed with quality of life (QoL) questionnaires. Seventy-eight Swedish children with mild-to-severe eczema ("atopic dermatitis", prurigo Besnier), fulfilling established diagnostic criteria, were investigated for the effect of eczema on QoL. This was measured with validated questionnaires: the Infants' Dermatitis Quality of Life Index (ID
Popular Abstract in Swedish Wellpapp är ett populärt material i förpackningar för transport och lagring av konsumentvaror. Den viktigaste anledningen till dess popularitet är materialets höga styvhet och styrka, i förhållande till vikt och kostnad. Ingenjörsmässig användning av wellpapp kompliceras av många faktorer. En väsentlig nackdel är materialets känslighet för fuktpåverkan, vilken dessutom The storage of compressive loaded boxes in an environment with naturally varying humidity is a practical issue in corrugated board employment. Time dependent variables such as moisture content, strain fields, stress fields and material strength play important roles for the time to failure. Supplementary, the stochastic nature of material and moisture load is obstructing the prediction of a reliabl
The article aims at pointing out the limitations of those archaeological approaches in the field of medieval studies that strictly follow the medieval social theory of the three and later four orders/estates. As an example of the possibilities offered by the use of an contextual approach in attempting to transcend the borders of the four-estate model, an analysis and interpretation of the pottery
Att prioritera betyder enligt Svenska Akademins ordlista att ge försteg eller förtur. Inom alla offentliga verksamheter råder resursbrist. Verksamheter präglas av prioriteringar mellan individer eller grupper av individer. För hälso- och sjukvårdens del har genom lag fastställts att den som har det största behovet också skall ges företräde till vård. Prioritering mellan individer skall göras utifr
New observations on the luminescence Of In2S3 and europium-doped In2S3 nanoparticles show a green (5 10 nm) emission from In2S3 and In1.8Eu0.2S3 nanoparticles while a blue (425 nm) emission is observed from ln(1.6)Eu(0.4)S(3) nanoparticles. Both the blue and green emissions have large Stokes shifts of 62 and 110 nm, respectively. Excitation with longer-wavelength photons causes the blue emission t
Two flavones, 4',5,7-trihydroxy-6-methoxy flavone (dinatin) and 4',5-dihydroxy-6, 7-dimethoxy flavone (skrofulein), were extracted from Artemisia herba alba L. Dinatin and skrofulein inhibited the binding of [methyl-3H]diazepam to rat brain membranes in vitro with IC50 of 1.3 and 23 mumol.L-1, respectively. The GABA-ratios (the ratio of IC50 values in the absence/presence of GABA in the binding as
Background and aims: Caregivers of Parkinson's disease patients are vulnerable to detrimental factors related to caregiving because of the progressive course of the disease. Studies of care-givers of these patients are scarce. The aim of this study was to examine the caregiver burden in Parkinson's disease by analyzing caregiver and patient-related factors. Methods: Every 3(rd) patient with Parkin
The first acedemic volume on the history, ideology and social history of Swedish freemasonry. Contains a membership list with 4300 members in Swedish lodges of the 18th century.
In laryngectomized patients a tracheo-esophageal artificial fistula can be used to achieve air flow from the trachea to the esophagus during speech. A one-way plastic valve is often used for the fistula. A free jejunal graft between the trachea and the esophagus can also be used. To avoid aspiration the transplant is attached to the submental area giving the graft a siphon-like shape. We performed
A biochemical oxygen demand (BOD) sensor, based on an immobilised mixed culture of microorganisms in combination with a dissolved oxygen electrode, has been developed for the purpose of on-line monitoring of the biological treatment process for waste and wastewater. The sensor was designed for easy replacement of the biomembrane, thereby making it suitable for short-term use. The drawbacks of acti
Wound healing that precedes scar formation may be unbalanced under pathological conditions leading to structural changes of the tissue. At the moment, the mechanisms behind this unbalance are unclear. When these changes occur in internal organs such as the lung, they may result in organ dysfunction with fatal consequences for the patient. This phenomenon is defined as airway remodeling, and occurs
