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Early land plant spores from the Paleozoic of Sweden – taxonomy, stratigraphy and paleoenvironments

Popular Abstract in Swedish Denna studie omfattar tidsperioderna ordovicium, silur och äldsta devon. Silurperioden sträcker sig från 444 till 416 miljoner år sedan och karakteriseras av globala miljö- och klimatförändringar. Vid denna tid hade djur och växter börjat kolonisera land, land som tidigare varit ödsligt och kargt. Min studie visar att det i Skåne då redan fanns en flora bestående av priThe Silurian through earliest Devonian, between ca 444 and 412 million years ago, was characterized by significant changes in global climate and environment. At that time, plants and animals had begun to expand the colonization of previous relatively desolate terrestrial landscape. Macrofossils of land plants are very rare from this period because these early land plants lacked large and robust ti

Kinin B2 Receptor-Mediated Bradykinin Internalization and Metalloendopeptidase EP24.15-Dependent Intracellular Bradykinin Degradation.

Kinins are potent proinflammatory peptides that are produced extracellularly and rapidly degraded by extracellular peptidases and by intracellular peptidases accessed by kinins via receptor-mediated endocytosis. Here, we developed model cell systems expressing the kinin B2 receptor (B2R) and the metalloendopeptidase thimet oligopeptidase (EC 3.4.24.15; EP24.15) either individually or together to a

Reducing information asymmetry in the power industry: Mandatory and voluntary information disclosure regulations of sulfur dioxide emission

This paper focuses on the institutional framework for sulfur dioxide emission information disclosure (SDEID) in power industries. The authors argue that mandatory and voluntary SDEID are two complementary regulatory instruments for emission reduction in the power industry. An analytical framework of SDEID with six facets is suggested in this paper to demonstrate relevant legal provisions and regul

Cluster headache associated with acute maxillary sinusitis.

Cluster headache is a primary headache by definition not caused by any known underlying structural pathology. However, symptomatic cases have been described, for example tumours, particularly pituitary adenomas, malformations, and infections/inflammations. The evaluation of cluster headache is an issue unresolved.

Premedication for intubation in newborn infants; pain assessment, pharmacokinetics and pharmacodynamics

Popular Abstract in Swedish För tidigt födda barn genomgår intensivvård under en period när de är väldigt sårbara pga instabil cirkulation och ett omoget centralt nervsystem under snabb utveckling. Tillräcklig behandling av smärta är av största betydelse eftersom stark smärtupplevelse kan medföra skadliga omedelbara kroppsreaktioner, men också neurologiska och neuropsykologiska seneffekter. Det fiPreterm infants undergo intensive care during a vulnerable period with hemodynamic instability and a rapidly developing and immature CNS. Adequate pain management is essential, since pain experience might lead to acute physiological reactions as well as neurological and neuropsychological sequels. There is no “golden standard” for objective pain assessment, and no evidence-based recommendations fo

Representation of microphysical processes in cloud-resolving models: Spectral (bin) microphysics versus bulk parameterization

Most atmospheric motions of different spatial scales and precipitation are closely related to phase transitions in clouds. The continuously increasing resolution of large-scale and mesoscale atmospheric models makes it feasible to treat the evolution of individual clouds. The explicit treatment of clouds requires the simulation of cloud microphysics. Two main approaches describing cloud microphysi

Sizing up your enemy: individual predation vulnerability predicts migratory probability

Partial migration, in which a fraction of a population migrate and the rest remain resident, occurs in an extensive range of species and can have powerful ecological consequences. The question of what drives differences in individual migratory tendency is a contentious one. It has been shown that the timing of partial migration is based upon a trade-off between seasonal fluctuations in predation r

Effects of different pre-salting methods on protein aggregation during heavy salting of cod fillets

The use of injection and brining as the first step in heavy salting of cod increases weight yields of the products through both salting and rehydration, compared to other pre-salting methods, like brining only and pickling. This is interesting since salt content of the muscle exceeds 20% NaCl, in all procedures. Therefore, the dissimilarities in yield were presumed to depend on the degree of prote

Combining Statistics and Case Studies to Identify and Understand Deficiencies in Fire Protection

Over the years, much information has been gathered about fires in fire investigation reports and statistics. This information may have been collected nationally by an agency or an insurance company, or locally by the local rescue service. The information thus gathered can be used to learn from these fires and thereby lead to improved fire safety in buildings. This paper describes a method for discover

Upp och ned i bokskogen

Elin Åkelius berättar om sitt examensarbete att återinventera sex rödlistade lavarter på bok. Det har visat sig att flera arter har gått tillbaka även under de senaste 20 åren.

HIV-1 Enhancing Effect of Prostatic Acid Phosphatase Peptides Is Reduced in Human Seminal Plasma

We recently reported that HIV-1 infection can be inhibited by innate antimicrobial components of human seminal plasma (SP). Conversely, naturally occurring peptidic fragments from the SP-derived prostatic acid phosphatase ( PAP) have been reported to form amyloid fibrils called "SEVI'' and enhance HIV-1 infection in vitro. In order to understand the biological consequence of this proviral effect,

Cluster-Driven Dynamical Arrest in Concentrated Lysozyme Solutions

We present a detailed experimental and numerical study of the structural and dynamical properties of salt-free lysozyme solutions. In particular, by combining small-angle X-ray scattering (SAXS) data with neutron spin echo (NSE) and rheology experiments, we are able to identify that an arrest transition takes place at intermediate densities, driven by the slowing down of the cluster motion. Using

An unexpected advantage of whiteness in horses: the most horsefly-proof horse has a depolarizing white coat

White horses frequently suffer from malign skin cancer and visual deficiencies owing to their high sensitivity to the ultraviolet solar radiation. Furthermore, in the wild, white horses suffer a larger predation risk than dark individuals because they can more easily be detected. In spite of their greater vulnerability, white horses have been highly appreciated for centuries owing to their natural

Essential multiple functions of farms in rural communities and landscapes

As farms are consolidated into larger operations and small farms close down for economic reasons, rural areas lose ecological, social and economic functions related to farming. Biodiversity and scenic, open-vista landscapes are lost as fields are left unmanaged. Social and economic benefits such as local job opportunities and meeting places disappear. Four Swedish rural communities were examined t

NADH-dependent biosensor in Saccharomyces cerevisiae: principle and validation at the single cell level.

A reporter system was constructed to measure perturbations in the NADH/NAD(+) co-factor balance in yeast, by using the green fluorescent protein gene under the control of the GPD2 promoter that is induced under conditions of excess of NADH. High fluorescence levels were obtained in a glycerol 3-phosphate dehydrogenase double deletion strain (gpd1Δgpd2Δ), which is deficient in the ability to regene

Flowering date of taxonomic families predicts phenological sensitivity to temperature: Implications for forecasting the effects of climate change on unstudied taxa.

Premise of the study: Numerous long-term studies in seasonal habitats have tracked interannual variation in first flowering date (FFD) in relation to climate, documenting the effect of warming on the FFD of many species. Despite these efforts, long-term phenological observations are still lacking for many species. If we could forecast responses based on taxonomic affinity, however, then we could l

Reagentless Amperometric Biosensor For Nadh Detection

A sensitive and selective amperometric biosensor, based on NADH-oxidase (NADOx) working in tandem with horseradish peroxidase (HRP), which is electrically connected to graphite electrode via Os-redox polymer (RP), was developed. Two designs were considered for the biosensor optimization: (i) the first one, [G/HRP-NADOx], exploited the direct electron transfer between HRP and the graphite electrode

The taxonomy of the Caloplaca citrina group (Teloschistaceae) in the Black Sea region; with contributions to the cryptic species concept in lichenology

A new taxonomy of the Caloplaca citrina group in the Black Sea region is presented. It is based on the nrDNA ITS molecular data, chemistry (anthraquinone contents) and 20 morphological characters. Six species previously known in the region are accepted: Caloplaca arcis, C. calcitrapa, C. dichroa, C. flavocitrina, C. geleverjae, C. limonia. Five new species are described: Caloplaca arcisproxima, C.