(Another route would be to use a sentinel value (e.g.,object()) as the default (this might require someConfigchanges to make it work, I'm not 100% sure), and add analways=Truevalidator that converts the exact default value toNone, and raises an error ifNonewas provided.) Note that...
forests fall under the government's mandate, but the Nigerian government hasn't been able to secure them because of their huge size, lack of personnel and poor surveillance technology.
A team of scientists from the University of Chicago designed a way to use microscopic capsules made out of DNA to deliver a payload of tiny molecules directly into a cell. The technique, detailed Aug. 21 in Nature Nanotechnology, gives scientists an opportunity to understand certain interactions ...
Whilst a tireless mechanical robot response might have been what Henry Ford and “time and motion man” wanted of their domains from early last century to the 1970’s, it only works for machine like activities carried out by manual labour used where a machine would be better suited anyway (...
Head Graphene XT Instinct REV Pro100 sq. in255g16 x 16View on Amazon Head Ti S6 Titanium115 sq. in225g16 x 19View on Amazon 2.) Intermediate Racquets – Inbetweeners These are racquets, as the name suggests somewhere between beginner and advanced. They often blend features from the catego...
An international research team has for the first time obtained the structure of the light-sensitive sodium-pumping KR2 protein in its active state. The discovery provides a description of the mechanism behind the light-driven sodium ion transfer across t
A nanofiber catalyst made of manganese oxide is used to speed up chemical reactions and remove volatile organic compounds from industrial smokestacks (UnderstandingNano, 2007). The University of Queensland experimented with another popular nanomaterial, carbon nanotubes (CNT), to trap greenhouse gas emis...
Advertisement. Bad banner? Please let us know Remove AdsReferences in periodicals archive ? Indeed, the spin-orbit interaction only slightly increases the estimated binding energies of the bands (the relativistic surface bands are shifted down by ~0.08 eV) but does not initiate the spin-splitting,...
Liquid crystals undergo a peculiar type of phase change. At a certain temperature, their cigar-shaped molecules go from a disordered jumble to a more orderly arrangement in which they all point more or less in the same direction. LCD televisions take advantage of that phase change to project ...
For the first time, the genomes of the giraffe and its closest living relative, the reclusive okapi of the African rainforest, have been sequenced—revealing the first clues about the genetic changes that led to the evolution of the giraffe's exceptional