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Transient kinetics of the equine infectious anemia virus deoxyuridine 5'-triphosphate nucleotide hydrolase were characterized by monitoring the fluorescence of the protein. Rate constants for the association and dissociation of substrate and inhibitors were determined and found to be consistent with a one-step mechanism for substrate binding. A C-terminal part of the enzyme presumed to be flexible
As a first application of optical double resonance and zero field level crossing spectroscopy to the elements of the sixth group in the periodic table of the atoms, the 5p36s5S2 level in the Te-I spectrum was investigated using natural tellurium in a high temperature quartz cell. For the electronic Landé-factor and the natural radiative lifetime the following values were obtained:$$g_J \left( {5p^
The effects of UV-C (254 nm) and UV-B (280-320 nm) on chlorophyll fluorescence induction and ultraweak luminescence (UL) in detached leaves of Hibiscus rosa-sinensis L. were investigated. UL from leaves exposed to UV-B and UV-C radiation reached a maximum 72 h after irradiation. In both cases most of the light was of a wavelength over 600 nm. An increase in the percentage of long wavelength light
Popular Abstract in Swedish Avhandlingen behandlar frågan om vad man i Sverige brukar kalla "människovärde". Denna fråga belyses genom en analys av begreppen "livets helgd" och "livskvalitet" som i den anglo-saxiska debatten har kommit att symbolisera två helt olika sätt att tolka det mänskliga livet värde. Tanken om livets helgd brukar anföras av dem som tror att livets värde är inneboende och iThe principles of sanctity of life and quality of life are often appealed to in medical decisions at the "edges of life." Notwithstanding their importance in bioethics, these principles are still badly understood. This study is an attempt to clarify their normative significance and content. Because these principles pertain to the more general question of the value of life, the study begins by exp
The objective of the study was to find ways of improvement of the dissolved air flotation process by studying the flow structure. The paper presents experimental data on flow structures and the relation between the flow structure and the removal efficiency. Measurements have been performed in a pilot plant with an Acoustical Doppler Velocimeter. The water velocity was measured in a grid net, givin
The level crossing method has been used for the investigation of the hyperfine structure of the 6p2P3/2 and 7p2P3/2 levels of the isotopes Cs133, Cs135, and Cs137. For the hyperfine coupling constants a and b and for the lifetimes ? we find: a(6p Cs133)=50.72(3) gJ/-1.345, b(6p Cs133)=-0.38(18) gJ/-1.345 a(7p Cs133)=16.610(6) gJ/-1.3349, b(7p Cs133)=-0.15(3) gJ/-1.3349 a(6p Cs135)=53.64(4) gJ/-1.3
The number-size distribution and hygroscopic growth of submicrometer aerosol particles were measured in central Amazonia during the first Cooperative LBA Airborne Regional Experiment (CLAIRE) wet season experiment in March-April 1998. This was the first time ever that these types of measurements were performed in the Amazon rain forest. A Differential Mobility Particle Sizer (DMPS) was used to mea
The effects of continuous and intermittent inhalation of trichloroethylene (TCE) were studied in male and female mice. Plasma butyrylcholinesterase (BuChE) activity, body, liver, kidney and spleen weights were measured. The liver was studied histologically and motor activity measured with doppler radar. Continuous TCE-exposure (37–300 p.p.m.) increased plasma BuChE activity in the males in a time
1. The distribution of the carbon monoxide (CO) producing enzymes haem oxygenase (HO)-1 and -2 was studied by immunohistochemistry in the pig's lower urinary tract, including bladder extramural arteries, and the oesophagogastric junction (OGJ). In isolated smooth muscle from the urethra and the OGJ, the mechanisms for CO-induced relaxations were characterized by measurement of cyclic nucleotide le
Electrochemical real-time monitoring of ligand binding to an engineered opioid receptor specific for morphine is reported. In the particular systems studied, 90% of the binding was found to be completed after only 85-120 s. Thus, the binding kinetics has proven to be more rapid than previously believed. The observed association rate constant for the morphine binding reaction was calculated to be 2
The rates of oxygen consumption and lactate production in the guinea-pig oviduct were measured together with registration of contractile activity during three phases of the hormonal cycle. In pro-oestrus (high oestrogen, low progesterone levels) and oestrus (time of ovulation, high oestrogen and progesterone) the rate of O2 consumption was higher than in dioestrus (low oestrogen, high progesterone
BACKGROUND: The clinically important Kidd (JK) blood group antigens are carried by the urea transporter in red cells. The rare Jk(a-b-) phenotype can be caused by homozygosity at the JK locus for a silent allele, JK: This phenotype has been recorded in many ethnic groups, but it is most abundant among people originating from the Polynesian Islands and Finland. The molecular basis for Jk(a-b-) is u
Final results from the DELPHI Collaboration on the lifetime of B+ and B-0 mesons and the mean b-hadron lifetime, are presented using the data collected at the Z(0) peak in 1994 and 1995. Elaborate, inclusive, secondary vertexing methods have been employed to ensure a b-hadron reconstruction with good efficiency. To separate samples of B+ and B-0 mesons, high performance neural network techniques a
Long-term eddy covariance measurements of energy and water fluxes and associated climatic parameters were carried out above a Scots pine (Pinus sylvestris) forest in the middle taiga zone of Central Siberia. Data from June 1998 through October 2000 are presented. With the exception of winter 1998/1999, data collection over this period were more or less continuous. A distinct seasonality in surface
Eight patients with colloid cysts of the third ventricle were examined with CT and MR. In six, surgical resection was performed and the material was subjected to histologic evaluation; the concentrations of trace elements were determined by particle-induced X-ray emission. Stereotaxic aspiration was performed in two. The investigation showed that colloid cysts are often iso- or hypodense relative
Popular Abstract in Swedish Denna avhandling presenterar data från två olika geografiska områden, Dronning Maud land, Antarktis, och den Skandinaviska fjällkedjan som befinner sig på den Baltiska kontinentalplattan. Dessutom presenteras en jämförande studie mellan två metoder att datera bergarter. Berggrunden i Dronning Maud Land domineras dels av migmatiserade bergarter, dels av post-tektoniska This thesis presents data from two areas, Dronning Maud Land, Antarctica, and the Scandinavian Caledonides, Baltica. In addition, a comparative geochronological study is presented. The bedrock of Dronning Maud Land (DML) is dominated by migmatitic gneisses and post-tectonic intrusions. A migmatitic gneiss at Jutulsessen nunataks, Gjelsvikfjella, has a protolith age of 1163 ± 6 Ma and a migmatisati
The aim of this study is to try and explain the relationship between violence and the changes taking place in social spaces. Violence, in all its dimensions, has taken a central place in Latin American social life and has become an almost totally private issue. This implies a series of spatial and social transformations in the cities. The new effects of violence influence social and ethnic segrega
