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Elevated CO2 levels and herbivore damage alter host plant preferences

Interactions between the moth Spodoptera littoralis and two of its host plants, alfalfa (Medicago sativa) and cotton (Gossypium hirsutum) were examined, using plants grown under ambient (350 ppm) and elevated (700 ppm) CO2 conditions. To determine strength and effects of herbivore-induced responses assays were performed with both undamaged (control) and herbivore damaged plants. CO2 and damage eff

Calculations of the electronic structure of strained InAs quantum dots in InP

We have calculated the electronic structure of InAs quantum dots embedded in InP as a function of size, using strain dependent eight-band k.p theory in the envelope function approximation. A realistic three-dimensional shape was used for the simulations and the piezoelectric polarization of the system was included. In order to avoid spurious solutions, an extra term was added to the Hamiltonian. P

Relationships between objective and perceived housing in very old age

Purpose: Our purpose in this study was to explore relationships between aspects of objective and perceived housing in five European samples of very old adults, as well as to investigate whether cross-national comparable patterns exist. Design and Methods: We utilized data from the first wave of the ENABLE-AGE Survey Study. The five national samples totalled 1,918 individuals aged 75 to 89 years. O

Suspicious minds: Criminals' ability to detect deception

This study is a quasi-experiment focusing on the deception detection ability of prison inmates (n = 52) and college students (n = 52). Participants made veracity judgments of videotaped statements of witnesses either lying or telling the truth about an event. In line with findings on criminals' beliefs about cues to deception, it was predicted that prison inmates would outperform students in terms

Association between a polymorphism in the carboxyl ester lipase gene and serum cholesterol profile

Carboxyl ester lipase (CEL) is involved in the hydrolysis and absorption of dietary lipids, but it is largely unknown to what extent CEL could be involved in determining the serum lipid levels. The C-terminal part of CEL consists of a unique structure with proline-rich O-glycosylated repeats of 11 amino-acid residues each. The common variant of the human CEL gene contains 16 proline-rich repeats,

Smoking cessation among daily smokers, aged 45-69 years: a longitudinal study in Malmö, Sweden.

OBJECTIVE: To investigate differences in snuff consumption, socio-demographic and psychosocial characteristics between baseline daily smokers who had remained daily smokers, become intermittent smokers or stopped smoking at the 1-year follow-up. DESIGN, SETTING, PARTICIPANTS AND MEASUREMENTS: A population of 12 507 individuals aged 45-69 years, interviewed at baseline in 1992-94 and at a 1-year fo

Population divergence of genetic (co)variance matrices in a subdivided plant species, Brassica cretica

The present study of Brassica cretica had two objectives. First, we compared estimates of population structure (Q(st)) for seven phenotypic characters with the corresponding measures for allozyme markers (F-st) to evaluate the supposition that genetic drift is a major determinant of the evolutionary history of this species. Secondly, we compared the genetic (co) variance (G) matrices of five popul

Increased expression of endothelin ETB and angiotensin AT(1) receptors in peripheral resistance arteries of patients with suspected acute coronary syndrome

Patients who experience chest pain, in which ischemic heart disease has been ruled out, still have an increased risk of future ischemic cardiac events and premature death, possibly due to subclinical endothelial dysfunction. A feature of endothelial dysfunction is an increased expression of arterial vasoconstrictor endothelin (ET) and angiotensin (AT) receptors. Our aim was to investigate if the a

Predisposing factors in laboratory animal allergy: a study of atopy and environmental factors

A population of 101 laboratory technicians handling laboratory animals was studied with regard to predisposing factors for allergy. Twenty-seven had symptoms indicating laboratory animal allergy (LAA); of these, nine had asthma and were skin prick test positive for animal allergens. The LAA asthmatics had an increased frequency of a family history of allergy (relative risk, RR = 3.8); the predicti

Computationally intensive multivariate statistics and relative frequency distributions in archaeology (with an application to the Early Epipaleolithic of the Levant)

Archaeologists seek to analyze patterns of similarity and difference among diverse kinds of assemblages that (1) vary in the number of specimens and (2) have been characterized by standard multi-category frequency distributions. Recent developments in computer simulation methods offer marked improvements in our ability to test statistical hypotheses about variation in relative taxonomic or typolog

Measurements of trace gas emissions from Australian forest fires and correlations with coincident measurements of aerosol optical depth

[1] We present vertically integrated measurements of C(2)H(2), C(2)H(4), C(2)H(6), HCOOH, CO, H(2)CO, HCN and NH(3) through smoke plumes from Australian forest fires measured by ground-based solar absorption spectroscopy. The column amounts of these gases are highly correlated with simultaneous, colocated measurements of aerosol optical depth, providing a potential method of mapping biomass-burnin

Acetylcholine receptor density in human cricopharyngeal muscle and pharyngeal constrictor muscle

Background: Upper esophageal sphincter resting tone is reduced during partial neuromuscular block, whereas contraction of the pharyngeal constrictor muscle is only slightly affected. We hypothesized that this difference may arise from differential nicotinic acetylcholine receptor (nAChR) density, the density supposedly being lower in the more sensitive cricopharyngeal muscle than in the resistant

Operational planning, re-planning and risk analysis for software releases

Software release planning takes place on strategic and operational levels. Strategic release planning aims at assigning features to subsequent releases such that technical, resource, risk and budget constraints are met. Operational release planning focuses on the realization of a single software release. Its purpose is to assign resources to feature development tasks such that total release durati

A comparison of the effects of carvedilol and metoprolol on well-being, morbidity, and mortality (the "patient journey") in patients with heart failure - A report from the Carvedilol or Metoprolol European Trial (COMET)

OBJECTIVES This study was designed to investigate the loss of well-being, in terms of lift-years, overall and in patients randomized to metoprolol versus carvedilol in the Carvcdilol Or Metoprolol European Trial (COMET). BACKGROUND The ultimate objectives of treating patients with heart failure are to relieve suffering and prolong life. Although the effect of treatment on mortality is usually desc

Phosphatase activities of arbuscular mycorrhizal intraradical

We investigated the influence of changes in external phosphorus (P) concentration on the proportion of phosphatase-active structures of the arbuscular mycorrhizal fungus Gigaspora margarita associated with Allium cepa. The P treatment was started when mycorrhizal colonisation had been established, and plant systems were harvested three times after the start of the P treatment. Higher shoot dry wei

The history of echocardiography

Following a brief review of the development of medical ultrasonics from the mid-1930s to the mid-1950s, the collaboration between Edler and Hertz that began in Lund in 1953 is described. Using an industrial ultrasonic flaw detector, they obtained time-varying echoes transcutaneously from within the heart. The first clinical applications of M-mode echocardiography were concerned with the assessment