Sampling design may obscure species–area relationships in landscape‐scale field studies

Correct sampling in observational studies.

This article has no abstract.

Frequent assessments may obscure cognitive decline.

Effects of an initial testing experience on the level of cognitive performance at a 2nd occasion are well documented. However, less is known about the effects of additional testing experiences beyond the 1st on the amount of cognitive change over a specified interval. This issue was investigated in a moderately large sample of adults between 18 and 95 years of age who performed a battery of cog...

simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Psychological Assessment Frequent Assessments May Obscure Cognitive Decline

Catastrophic presentation of infant botulism may obscure or delay diagnosis.

Three infants with infant botulism are presented to illustrate how atypical, early, and severe features may obscure or delay diagnosis. Two boys aged 6 weeks and 20 days, respectively, presented with rapid deterioration after brief periods of poor feeding, one with an apparent life-threatening event at home and the other with a full cardiopulmonary arrest. Initial abnormal laboratory findings o...