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Theoretical Study of the Fast Photodissociation Channels of the Monohalobenzenes

Excited state properties of fluorobenzene, chlorobenzene, bromobenzene, and iodobenzene have been investigated theoretically using multireference CASSCF and CASPT2 methods. Experimentally, chlorobenzene and bromobenzene are known to exhibit one fast dissociation channel, whereas iodobenzene exhibits two fast dissociation channels. The calculations indicate that the chlorobenzene, the bromobenzene,

Sensor Integration in Task-level Programming and Industrial Robotic Task Execution Control

Presents an approach to improved performance and flexibility in industrial robotics by means of sensor integration and feedback control in task-level programming and task execution. Also presents feasibility studies in support of the ideas. Discusses some solutions to the problem using six degrees of freedom force control together with the ABB S4CPlus system as an illustrative example. Consider va

Biodiversity at Linnaeus' birthplace in Stenbrohult, southern Sweden. 4. The vascular plant flora and its changes.

We review the history of floristic studies of the parish of Stenbrohult, southern Sweden, where Carl Linnaeus was born in 1707 and spent his summers until 1728. Unfortunately, Carl Linnaeus never made a list of the wild vascular plants at his birthplace, although he mentioned at least 64 species from the parish of Stenbrohult in various manuscripts and books. However, he said that Stenbrohult was

Refill non-adherence to repeat prescriptions leads to treatment gaps or to high extra costs

Objective: To determine the nature and extent of undersupply and the economic consequences of oversupply of medication among non-adherent patients. Methods: This study used copies of repeat prescriptions (=multiple dispensations), collected during 1 week in 2002 at 16 Swedish community pharmacies. For patients with a refill adherence below 80%, treatment gaps were defined as the number of days the

Time course of ECG depolarization and repolarization changes during ischemia in PTCA recordings

Objectives: In this work we studied the temporal evolution of changes in the electrocardiogram (ECG) as a consequence of the induced ischemia during prolonged coronary angioplasty, comparing the time course of indexes reflecting depolarization and those reflecting repolarization. Methods: We considered both local (measured at specific points of the ECG) and global (obtained from the Karhunen-Loeve

Miniaturized on-line digestion system for the sequential identification and characterization of protein analytes

A miniaturized on-column digestion system constructed for the sequential analysis of semi-purified protein analytes is presented. By utilizing fused silica capillary (diameter 150 mu m) packed with a zone of trypsin-modified Eupergit C beads and a second zone of reversed-phase C18 material, a linear column set-up was constructed. The protein analytes (pmol amounts) were first digested in the 600 n

The changing structure and tree composition in the traditionally grazed forests in the parish of Stenbrohult, southern Sweden

The formerly grazed forest (utmark) was the dominant land use on most farms in southern Sweden until about 100 years ago. Here I describe the changed structure and tree species composition over time of the utmark on three farms owned by the church in the central part of Stenbrohult. In this area Carl Linnaeus spent his first 20 summers until 1728. The study is based on old forest management plans,

Two-sided ideals in q-deformed Heisenberg algebras

In this article, the structure of two-sided ideals in the q-deformed Heisenberg algebras defined by the q-deformed Heisenberg canonical commutation relation AB-qBA=I is investigated. We show that these algebras are simple if and only if q = 1. For q not equal 1, 0 we present an infinite descending chain of non-trivial two-sided ideals, thus deducing by explicit construction that the q-deformed Hei

Structural Induced Control of Energy Transfer within Zn(II)-Porphyrin Dendrimers

We report on a study of singlet-singlet annihilation kinetics in a series of Zn(II)-porphyrin-appended dendrimers, where the energy transfer efficiency is significantly improved by extending the molecular chain that connects the light-harvesting chromophores to the dendrimeric backbone with one additional carbon. For the largest dendrimer having 64 Zn(II)-porphyrins, only 10% of the excitation int

Is there seasonal variation in size and mass of Red Admirals Vanessa atalanta on Capri, Italy?

I present data on seasonal variation in wing length and mass of Red Admirals Vanessa atalanta captured on Capri, Italy, during spring and autumn. The Red Admiral is a migratory butterfly that migrates north throughout Europe each year and then heads back south in the autumn. During the winter they are mostly found in the northern Mediterranean area where they previously were thought to hibernate,

Factors regulating the recruitment of cyanobacterial and eukaryotic phytoplankton from littoral and profundal sediments

Many phytoplankton species produce resting cysts, forming 'seed banks' on lake sediments until they germinate and provide inocula (recruitment) for future pelagic populations. We have addressed the question of whether the littoral or the profundal zone provides the inoculum for planktonic populations in a eutrophic and dimictic lake (Lake Erken, Sweden). Our hypotheses were that high temperature,

Clinical case seminar - Insufficient ketone body use is the cause of ketotic Hypoglycemia in one of a pair of homozygotic twins

Context: Childhood ketotic hypoglycemia ( KH) is a disease characterized by fasting hypoglycemia and increased levels of ketone bodies. The cause is unknown. Objective: The objective of the study was to study a pair of homozygotic twin boys, one of whom had severe KH from the age of 14 months, whereas the other boy was apparently healthy. Design and Results: At the age of 6 yr, the boys were thoro