Time–frequency extraction is a key issue to understand structural symmetry of dynamic responses offshore oil platforms for early warning during drilling operations. Current popular methods signal characteristics can only obtain the attributes with single dimension or poor precision. To solve this, combined Hilbert–Huang transform (HHT) and variational mode decomposition (VMD) method proposed ex...

Foreword The purpose of the Delta Risk Management Strategy (DRMS) Initial Technical Framework (ITF) is to guide the analysis of specific technical topics as they relate to assessing potential risks to Delta levees and assets resulting from various potential impacts (e.g., floods, earthquakes, subsidence, and climate change). These ITFs are considered " starting points " for the work that is to ...

BLOOD PIPETTE SHAKING MACHINE MARK II BY K. C. PARRY Fromn the Medical Division, Atomic Energy Research Establishment, Harwell (RECEIVED FOR PUBLICATION JUNE 22, 1950) The blood pipette shaking machine previously reported (Parry and Simmonds, 1950) has been modified to incorporate various improvements. In the new machine (1) the pipettes lie in the same plane and there is greater ease of insert...

18 NOVEMBER 2016 • VOL 354 ISSUE 6314 817 I n 2010, a comparison between the genomes of a Neandertal and people today settled what anthropologists and geneticists had debated for decades: Our ancestors had indeed mated with their archaic cousins, producing hybrid children. They, in turn, had mated with other modern humans, leaving their distant descendants—us—with a permanent Neandertal legacy....

A large-scale statistical experimental design was used to determine essential cultivation parameters that affect biomass accumulation and geraniol production in transgenic tobacco (Nicotiana tabacum cv. Samsun NN) cell suspension cultures. The carbohydrate source played a major role in determining the geraniol yield and factors such as filling volume, inoculum size and light were less important...