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Photochemistry of diiodomethane in solution studied by femtosecond and nanosecond laser photolysis. Formation and dark reactions of the CH2I-I isomer photoproduct and its role in cyclopropanation of olefins

Femtosecond and nanosecond photolysis of CH2I2 in acetonitrile at an excitation wavelength of 266-nm yield the ground-state CH2I-I isomer product in similar to70% quantum yield. High isomer formation quantum yields (> 70%) were measured also in n-hexane, dichloromethane, methanol, and ethanol using nanosecond photolysis. The CH2I-I product is formed biphasically within similar to15 ps after excita

Towards Gene Therapy of Osteopetrosis.

Popular Abstract in Swedish Osteopetros är ett samlingsnamn för en grupp av sjukdomar som påverkar benombildningen i vår kropp. Denna term kan lätt förväxlas med den betydligt vanligare sjukdomen osteoporos (benskörhet). Trots ordens snarlikhet skiljer sig dessa sjukdomar sig avsevärt från varandra. Osteo är latin för ben och medan poros kan översättas med porös betyder petros sten. Även om de oliThe goal in this thesis is development of gene therapy for malignant infantile osteopetrosis (IMO), a rare but severe genetic bone disease. The concept of osteopetrosis implies dysfunction or lack of osteoclasts, the bone resorbing cells in our body, resulting in failure of normal bone breakdown. Although involved in bone remodeling, osteoclasts are of hematopoietic origin and may potentially be t

Early ageing in middle-aged men is associated with adverse social factors and increased mortality risk: The Malmö Preventive Project.

Aims: This study examined whether middle-aged men exhibiting markers of early ageing showed a different pattern of social factors, lifestyle, and biological variables compared with controls, and whether early ageing was associated with an increased mortality risk. Subjects and methods: We used a subgroup of 5,722 middle-aged men (mean age 47 years), investigated twice, from the Malmö Preventive Pr

Are smoking-associated cancers prevented or postponed in women using hormone replacement therapy?

OBJECTIVE: [corrected] To investigate the relationship between hormone replacement therapy (HRT), smoking, and cancer incidence.METHODS: Baseline interviews were conducted from 1990 to 1992 in a population-based cohort of 29,508 Swedish women aged 25-65 years with no history of cancer. Cancer incidence in the cohort was assessed through December 31, 1999, with the Swedish Cancer Registry, the Popu

Cognitive function after cardiac arrest and temperature management; rationale and description of a sub-study in the Target Temperature Management trial

Background: Mild to moderate cognitive impairment is common amongst long-term survivors of cardiac arrest. In the Target Temperature Management trial (TTM-trial) comatose survivors were randomized to 33 degrees C or 36 degrees C temperature control for 24 hours after cardiac arrest and the effects on survival and neurological outcome assessed. This protocol describes a sub-study of the TTM-trial i

Brain ischemia downregulates the neuroprotective GDNF-Ret signaling by a calpain-dependent mechanism in cultured hippocampal neurons.

The glial cell line-derived neurotrophic factor (GDNF) has an important role in neuronal survival through binding to the GFRα1 (GDNF family receptor alpha-1) receptor and activation of the receptor tyrosine kinase Ret. Transient brain ischemia alters the expression of the GDNF signaling machinery but whether the GDNF receptor proteins are also affected, and the functional consequences, have not be

Strategy for PLIF single-shot HCO imaging in turbulent methane/air flames

Formyl (HCO) has since long been recognized as a common intermediate species and a potential local indicator of the major heat release in hydrocarbon combustion. Consequently, the detection of HCO is desirable especially in turbulent flames of practical relevance. However, due to the low concentration and low fluorescence quantum yield, single-shot based detection of HCO with planar laser-induced

Phosphite-induced changes of the transcriptome and secretome in Solanum tuberosum leading to resistance against Phytophthora infestans

Background: Potato late blight caused by the oomycete pathogen Phytophthora infestans can lead to immense yield loss. We investigated the transcriptome of Solanum tubersoum (cv. Desiree) and characterized the secretome by quantitative proteomics after foliar application of the protective agent phosphite. We also studied the distribution of phosphite in planta after application and tested transgeni

Tank-connected food waste disposer systems - Current status and potential improvements.

An unconventional system for separate collection of food waste was investigated through evaluation of three full-scale systems in the city of Malmö, Sweden. Ground food waste is led to a separate settling tank where food waste sludge is collected regularly with a tank-vehicle. These tank-connected systems can be seen as a promising method for separate collection of food waste from both households

Loss of TGFβ Receptor Type 2 Expression Impairs Estrogen Response and Confers Tamoxifen Resistance.

One third of the patients with estrogen receptor alpha (ER alpha)-positive breast cancer who are treated with the antiestrogen tamoxifen will either not respond to initial therapy or will develop drug resistance. Endocrine response involves crosstalk between ER alpha and TGF beta signaling, such that tamoxifen non-responsiveness or resistance in breast cancer might involve aberrant TGF beta signal

Changes in butterfly movements along a gradient of land use in farmlands of Transylvania (Romania)

Context Agricultural transformation and increased land use intensity often lead to simplified landscapes and biodiversity loss. For animals, one possible mechanism underpinning biodiversity loss in agricultural landscapes is the disruption of movements. The disruption of movements may explain, for example, why butterfly communities in agricultural landscapes are often dominated by generalist speci

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Subcutaneous continuous infusion of apomorphine has been shown to effectively reduce off-time and dyskinesias in Parkinson's disease (PD). In this multicentre observational cohort study we investigated motor effectivity, tolerability and patient satisfaction with subcutaneous apomorphine infusion therapy over a follow-up period of 2 years. 62 PD patients were included (34 women, 28 men; median age

Alcohol use and early mortality in Swedish middle-aged women: Nine-year follow-up of the Women's Health in Lund Area study.

The majority of prospective studies on alcohol use and mortality risk indicate that non-drinkers are at increased risk of death compared to moderate drinkers. This article investigates the association between middle-aged women's alcohol use and mortality, controlling for socio-demographic and health variables. An association between alcohol use and hospital in-patient care is also analysed. Method

New insights into Holocene atmospheric circulation dynamics in central Scandinavia inferred from oxygen-isotope records of lake-sediment cellulose

Cellulose-inferred lakewater oxygen-isotope records have been obtained from two hydrologically open basins (Lake Spaime and Lake Svartkalstjarn), located on a west east transect across central Sweden, to investigate changes in atmospheric circulation patterns during the Holocene. The Lake Spaime delta O-18 record is sensitive to changes in the seasonal distribution of precipitation in the Scandes

75% success rate after open debridement, exchange of tibial insert, and antibiotics in knee prosthetic joint infections.

Background and purpose - Prosthetic joint infection (PJI) is a leading cause of early revision after total knee arthroplasty (TKA). Open debridement with exchange of tibial insert allows treatment of infection with retention of fixed components. We investigated the success rate of this procedure in the treatment of knee PJIs in a nationwide material, and determined whether the results were affecte

Numerical predictions of augmented heat transfer of an internal blade tip-wall by hemispherical dimples

The heat transferred to the turbine blade is substantially increased as the turbine inlet temperature is increased. Improved cooling methods are therefore needed for the turbine blades to ensure a long durability and safe operation. The blade tip region is exposed to very hot gas flow, and suffers high local thermal loads due to the external tip leakage flow. A common way to cool the tip is to des

The effect of carbon dioxide on growth of juvenile Atlantic cod Gadus morhua L.

A trial was undertaken to investigate how exposure to graded hypercapnia affected the growth performance of juvenile (15-80g) Atlantic cod. Juveniles were grown at 20‰ salinity and 10°C for 55 days under three hypercapnic regimes: low (2±0.9mgL(-1) CO(2), 0.6mm Hg, 1000μatm), medium (8±0.5mgL(-1) CO(2), 2.8mm Hg, 3800μatm) and high CO(2) exposure (18±0.2mgL(-1) CO(2), 6.3mm Hg, 8500μatm). All wate

Influence of preoperative medical assessment prior to elective endovascular aneurysm repair for abdominal aortic aneurysm

Aim. The aim of this study was to compare preoperative patient evaluation by a vascular physician with a standardized workup protocol prior to elective endovascular aneurysm repair (EVAR) for abdominal aortic aneurysm (AAA), in terms of differences in patient medication and mortality. Methods. Consecutive patients with infrarenal AAA treated with standard EVAR from 1998 to 2006 (group 2) and 2007

Aspects of ancient Greek trade re-evaluated with amphora DNA evidence

Ancient DNA trapped in the matrices of ceramic transport jars from Mediterranean shipwrecks can reveal the goods traded in the earliest markets. Scholars generally assume that the amphora cargoes of 5th-3rd century B.C. Greek shipwrecks contained wine, or to a much lesser extent olive oil. Remnant DNA inside empty amphoras allows us to test that assumption. We show that short 100 nucleotides of an