Background How DNA repair enzymes find the relatively rare sites of damage is not known in great detail. Recent experiments and molecular data suggest that individual repair enzymes do not work independently of each other, but interact with each other through charges exchanged along the DNA. A damaged site in the DNA hinders this exchange. The hypothesis is that the charge exchange quickly libera

Review of Sune Zachrisson, "Sankt Lars i Linköping - en tusenårig historia" (Linköping 2007)

Here we present a method for high-precision drilling using an industrial robot with high-bandwidth force feedback, which is used for building up pressure to clamp up an end-effector to the work-piece surface prior to drilling. The focus is to eliminate the sliding movement (skating) of the end-effector during the clamp-up of the end-effector to the workpiece surface, an undesired effect that is du

A kinematic hardening plasticity model valid for finite strains is presented. The model is based on the well-known multiplicative split of the deformation gradient into an elastic and a plastic part. The basic ingredient in the formulation is the introduction of locally defined configurations - center configurations- which are associated with deformation gradients that are used to characterize the

Popular Abstract in English Low fuel consumption, and reduced exhaust emissions, as well as improved performance and durability become much more important than before for the vehicle industry. These requirements lead to a number of additional equipment installed in the vehicles. All these efforts increase the operating temperature in the engine compartment and reduce the available free space in thCross flow heat exchangers made from aluminum are common as radiators in vehicles. However, due to the increasing power requirement and the limited available space in vehicles, it is extremely difficult to increase the size of heat exchangers (HEXs) placed in the front of vehicles. Placing the heat exchanger on the roof or at the underbody of vehicles might offer opportunity to increase the size o

licentiate theses in mathematical sciences

Denna studie har gjorts med anslag från Statens Råd för Byggnadsforskning. Problemet har föreslagits av professor Bergström, LTH, som under arbetet givit många goda råd och annan hjälp. Vid betonggjutning vintertid skall man undvika att det börjar frysa i betongen innan denna har hunnit hårdna tillräckligt. Det ar då av intresse att kunna förutsäga temperaturförloppet i betongen under olika betin