Administration of oral contraceptive (OC) has been associated with body fluid retention and in high doses over a long period, promotes hypertension. This present investigation tests the hypothesis that the dietary calcium supplementation increases salt and water excretion in OC (norgestre/ethinylestradiol) treated 32 female albino rats randomly distributed into four (1-4) groups of 8 rats each:...

BACKGROUND Osteocalcin (OC) is produced by osteoblasts during bone formation, and circulating OC has been used in clinical investigations as a marker of bone metabolism. OC is excreted into urine by glomerular filtration and can be found in urine as midmolecule fragments. METHODS We developed and evaluated three immunoassays (U-MidOC, U-LongOC, and U-TotalOC) for the detection of various mole...

Conceptual models suggest that stability of organic carbon (OC) in soil depends on the source of plant litter, occlusion within aggregates, incorporation in organomineral complexes, and location within the soil profile. Density fractionation is a useful tool to study the relevance of OC stabilization in aggregates and in association with minerals, but it has rarely been applied to full soil pro...

The recent enthusiastic reception of the MIT OpenCourseWare (OCW) project has significantly improved the general awareness of Open Courseware (OC). However, many other lesser known projects and resources can also be classified as OC. The OC movement can potentially provide a vast pool of resources to satisfy diverse needs of Computer Science (CS) educators. However, there are only limited discu...

BACKGROUND AND PURPOSE Literature suggests a small increased risk of ischemic stroke with oral contraception (OC) use. We evaluated the association of stroke and OC use in women on the basis of whether they recalled being advised by a physician not to use OC or to discontinue OC use because of the presence of stroke risk modifiers, and whether such advice resulted in behavioral change. METHOD...

We test the common assumption that organic carbon (OC) storage occurs on sand-sized soil particles only after the OC storage capacity on silt- and clay-sized particles is saturated. Soil samples from a Brookston clay loam in Southwestern Ontario were analysed for the OC concentrations in bulk soil, and on the clay (<2 μm), silt (2-53 μm) and sand (53-2000 μm) particle size fractions. The OC con...

BACKGROUND In recent years, an increasing number of countries have introduced outpatient commitment orders (OC), which imply that patients can be subject to compulsory follow-up and treatment while living in the community. However, few studies on how OC is practised have been published. METHOD Retrospective case register study based on medical files of all patients receiving an OC order in 20...

Culicid larvae were collected in snow-melt pools during the first half of June from 1975-1977 and 1995-1996 in the Abisko Valley, Torne Lapmark, northern Sweden. Twelve species were collected from 102 pools and 81 localities with 7,914 specimens (elevations from 300 to 650 m a.s.l.). Fourteen species are now known from the area. Ten types of larval habitats were classified and ten species were ...

In the boreal region, soil organic carbon (OC) dynamics are strongly governed by the interaction between wildfire and permafrost. Using a combination of field measurements, numerical modeling of soil thermal dynamics, and mass-balance modeling of OC dynamics, we tested the sensitivity of soil OC storage to a suite of individual climate factors (air temperature, soil moisture, and snow depth) an...

The objective of the present study was to analyze the pattern of oral contraceptive (OC) use in teenagers and to examine the relationship between OC use and other cardiovascular risk factors. The study was conducted in 24 Belgian secondary schools. Most students (1526 adolescents aged 12–17 years) agreed to participate (participation rate: 83.6%). Smoking, physical activity habits, menarche, an...