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The interior of living cells is a dense and polydisperse suspension of macromolecules. Such a complex system challenges an understanding in terms of colloidal suspensions. As a fundamental test we employ neutron spectroscopy to measure the diffusion of tracer proteins (immunoglobulins) in a cell-like environment (cell lysate) with explicit
The model peptides A 8 K and A 10 K self-assemble in water into ca. 100 nm long ribbon-like aggregates. These structure
We present an implementation of heavy quarkonium production within a perturbative QCD cascade based on the Color Dipole Cascade model. We consider the processes most relevant in the context of the ψ′ surplus at the Tevatron; g → ψ′ and c → ψ′ in the color-singlet model and g → ψ′ through the color-octet mechanism. Our implementation is, however, easily extendible to other quarkonia and other produ
Circadian rhythms are ubiquitous in eukaryotes, and coordinate numerous aspects of behaviour, physiology and metabolism, from sleep/wake cycles in mammals to growth and photosynthesis in plants. This daily timekeeping is thought to be driven by transcriptionaltranslational feedback loops, whereby rhythmic expression of clock- gene products regulates the expression of associated genes in approximat
A new generation of sources of XUV harmonic radiation, delivering 'attosecond' pulses, makes feasible to investigate photoionization in the time domain, with unprecedented resolution. Here, we discuss theoretical aspects related to this new class of experiments.
De pågående globaliseringsprocesserna har gett upphov till ett allt större motstånd bland en påstådd homogen enhet som benämns vårt folk och som binder samman medborgarna som bebor landet och som delar dess politiska, sociala och kulturella egenskaper. I detta sammanhang har de högerradikala populistiska partierna som påstår sig försvara folkets verkliga politiska intressen och vilja fått en allt
Aims: We observed a microvascular structure in the cerebral cortex that has not, to our knowledge, been previously described. We have termed the structure a ‘raspberry’, referring to its appearance under a bright-field microscope. We hypothesized that raspberries form through angiogenesis due to some form of brain ischaemia or hypoperfusion. The aims of this study were to quantify raspberry freque
The nutrient intake in geriatric long-stay patients and the mortality risk associated with low energy intake were studied in 61 patients, 43 women and 18 men, with a mean age of 87 years, at a geriatric long-stay care hospital during a 6-month follow-up. Dietary intake was assessed with a 9-day dietary record. Energy expenditure was calculated assuming a physical activity level of 1.33 × basal met
In this paper we propose a new ratio control architecture that exploits the use of inversion-based feedforward actions to achieve a fast set-point step response while keeping the required ratio between two process variables. The recently developed ratio tracking station is then achieved to increase the robustness of the system. A user design parameter allows the selection of the trade-off between
The transport characteristics of a disordered, multilayered MoS2 nanoflake in the insulator regime are studied by electrical and magnetotransport measurements. The MoS2 nanoflake is exfoliated from a bulk MoS2 crystal and the conductance G and magnetoresistance are measured in a four-probe setup over a wide range of temperatures. At high temperatures, we observe that lnG exhibits a -T-1 temperatur
A mobile differential absorption lidar system was used in conjunction with point monitors to study the spatial and temporal distribution of atomic mercury in the atmosphere around an abandoned mercury mine at Abbadia S. Salvatore, Italy. The use of the remote sensing technique allows a fast coverage of large areas both horizontally and vertically with a good temporal resolution. Concentrations exc
