We try to understand the behavior of algebraic shifting with respect to some basic constructions on simplicial complexes, such as union, coning, and (more generally) join. In particular, for the disjoint union of simplicial complexes we prove ∆(K∪̇L) = ∆(∆(K)∪̇∆(L)) (conjectured by Kalai [2]), and for the join we give an example of simplicial complexes K and L for which ∆(K ∗ L) 6= ∆(∆(K) ∗∆(L)) ...

An 88-year-old woman with an undiagnosed chronic subdural haematoma underwent emergency repair of a femoral hernia under spinal anaesthesia. The patient complained of headache postoperatively, and a subsequent computed tomography brain scan showed an acute-on-chronic subdural haematoma, with midline shift and impending coning. The patient recovered completely after surgical decompression. The d...

Zones of Weakness in the Earth's Crust: DR. WiLL Quotations: LIAM BowiE ........ 589 Biochemistry and Medicine................. .... 610 Periodicals for Mathematicians: PROFESSOR EDWARD Scientific Apparatus and Laboratory Methods: S. ALLEN .. 592 An Issue Raised in "A New Type of Lysimeter The American Association for the Advancement of at the New Jersey Agricultural Experimnent StaScience: tio...

Carbon dioxide has been used commercially to recover oil from reservoirs for more than 40 years. Currently, CO2 flooding is the second most applied enhanced oil recovery (EOR) process in the world behind steam flooding. Water alternating gas (WAG) injection has been a popular method to control mobility and improve volumetric sweep efficiency for CO2 flooding. Average EOR is about 9.7% with a ra...

To alleviate the mass-scaling issues associated with conventional upwind rotors of extreme-scale wind turbines (≥10MW), a morphing downwind-aligned rotor (MoDaR) concept is proposed herein. The concept employs a downwind rotor with blades whose elements are stiff (no intentional flexibility) but with hub-joints that can be unlocked to allow for momentfree downwind alignment. Aligning the combin...