Papers
TL;DR: Prevalence rates from what is believed to be the first population-based study of cognitive impairment without dementia to include individuals from all regions of the country are reported, as well as rates of progression from cognitive impairmentWithout dementia to dementia and death.
Abstract: Results: In 2002, an estimated 5.4 million people (22.2%) in the United States age 71 years or older had cognitive impairment without dementia. Prominent subtypes included prodromal Alzheimer disease (8.2%) and cerebrovascular disease (5.7%). Among participants who completed follow-up assessments, 11.7% with cognitive impairment without dementia progressed to dementia annually, whereas those with subtypes of prodromal Alzheimer disease and stroke progressed at annual rates of 17% to 20%. The annual death rate was 8% among those with cognitive impairment without dementia and almost 15% among those with cognitive impairment due to medical conditions. Limitations: Only 56% of the nondeceased target sample completed the initial assessment. Population sampling weights were derived to adjust for at least some of the potential bias due to nonresponse and attrition. Conclusion: Cognitive impairment without dementia is more prevalent in the United States than dementia, and its subtypes vary in prevalence and outcomes.
934 citations
TL;DR: It is indicated that respiratory rhythms become more complex with increasing levels of maturity, as indicated by increased weight and several age parameters, and a promising use of entropy measures in exploring respiratory maturation in infants is suggested.
Abstract: Very low-birth-weight premature infants often suffer from a variety of respiratory problems, including respiratory distress syndrome (RDS), hypopnea and periodic breathing, and apnea. These conditi...
39 citations
1 Jan 1989
TL;DR: In this article, an attempt has been made to compare the diffraction elastic constants of mild steel as determined by x-ray and neutron diffraction techniques, data from the same crystallographic direction, viz.
Abstract: The high penetration power of thermal neutrons offers a unique possibility to measure residual strain distributions in the interior of many engineering materials, non-destructively. In order to compute stresses from the measured strain data in a realistic way, experimentally determined values of the diffraction elastic constants are needed. In this investigation an attempt has been made to compare the diffraction elastic constants of mild steel as determined by x-ray and neutron diffraction techniques. In both methods, data from the same crystallographic direction, viz. were considered.
1 citations
SGM1
TL;DR: In this article, the total concentration of metals in soil is determined after destruction of the samples with "Kingswater" acid, which results in the complete destruction of soil matrix, and all the heavy metals, enclosed in the soil matrix as well as adsorbed on the soil particles, are released, independently of their bonding strength.
Abstract: In the Netherlands much research is carried out focused on soil pollution related to heavy metals. Heavy metal analyses in soil samples are normally performed according to the standard procedure VPR-C85-01, as prescribed by the Dutch Government in the VPR-guide-lines (ref.1). In this procedure the total concentration of metals in soil is determined after destruction of the samples with “Kingswater”. The application of this acid, being very strong, results in the complete destruction of the soil matrix. Consequently all the heavy metals, enclosed in the soil matrix as well as adsorbed on the soil particles, are released, independently of their bonding strength. However, heavy metals enclosed in the soil matrix are immobile. Therefore, a determination of the total concentration of heavy metals after destruction with this acid gives no information with regard to the migration of the metals.
Authors
Showing all 4 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| John J. McArdle | 67 | 200 | 16342 |
| Robert H. Habib | 33 | 65 | 4707 |
| B. Pathiraj | 1 | 1 | 1 |
| Mark A. Smithers | 0 | 1 | 0 |
Related Institutes (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2009 | 1 |
| 2008 | 1 |
| 1990 | 1 |
| 1989 | 1 |