Vital to the solid framework of the body, bones play an equally important metabolic role hidden from casual observation.
An X-ray scanning method to nondestructively detect flaws that are hidden from direct observation is demonstrated.
At sea for most of the year and preferring remote offshore islands for its breeding habitat, the Atlantic Puffin has lived a life largely hidden from human observation.
As for the water, it is not observed to exist collectively and separately, nor can it do so apart from that volume of it which has its seat about the earth: the sea, that is, and rivers, which we can see, and any subterranean water that may be hidden from our observation). The question is really about that which lies between the earth and the nearest stars.
Lennon and Scott [35] point out that although energy systems and social systems are often highly interconnected, "the forms in which societies are energised are often hidden from direct observation, especially in the case of more distant forms of energy" in an era of interconnected smart grid spanning continents.
Further, in the case of benign skin neoplasms, malignant transformation of these tumors most often occurred at the base of the lesion and was initially hidden from gross observation.
In particular, plant DNA sequences extracted from insect gut contents can provide information about insect feeding choices occurring under natural conditions, which can be hidden from direct observations of insects on plants, or may contradict feeding preferences of insects observed in laboratory feeding trials (e.g., Garcia-Robledo et al., 2013).
The timing and location had been selected by Admiral William D. Leahy to provide the Utah with the greatest likelihood of fog and cloud cover in which to hide from air observation.
A general observation was that the pain and these major impairments in ADL occurred without obvious outward signs, so that much of the suffering involved was hidden from the casual observer.
