A decades-old mystery of why a naturally-occurring organic crystal fluoresces blue under ultra-violet light, yet when grown under laboratory conditions fluoresces with an intense green colour, has been solved by scientists …

Cutting the rate to £25,000 could yield up to £2 billion, but would drag 1.5 million small traders into the VAT system.

An example is the selective transport of water with respect to ions from membrane potential gradients across biological pores such as aquaporins (AQPs) (8). In this context, it has previously been shown that natural AQPs can be mimicked using structurally simpler artificial compounds while displaying relatively high water flow rates and ionic exclusion (9–11). We previously reported that artificial imidazole quartets (I-quartets), that are stacks of four imidazoles and two water molecules, form a water channel in the lipid bilayer membranes (Fig. 1). These artificial I-quartets can stabilize oriented water wires within a 2.6 Å diameter pore (Fig. 1D) (12), which is very close to the narrowest constriction observed in AQPs (2.8 Å) (13). The channels can transport ~106 water molecules per second per channel, which is within two orders of magnitude of AQPs’ transport rates, and reject all ions except protons (14). These self-assembled channels exhibit remarkable combinations of structural behavior such as dipolar orientation of confined water reminiscent of those observed in natural AQPs. They represent model systems of prime importance for enhancing water and proton translocation along oriented water wires (14). This dipolar orientation of water molecules within an artificial channel may furthermore adopt the supramolecular chirality of individual channels, whereas overall achiral structures with inverted symmetry contain opposing chiral oriented channels. Intrinsic chiral channels remove this restriction enabling the formation of unique chiral dipolar oriented water channels.

"A good haircut is essential. Precision-shaping paired with deep hydration will save the day," says Marris Ambrose, color director at Julien Farel Restore Salon & Spa Color in New York City. "There are many options, depending on the amount of gray present and the look you’re going for. Possibly paint some white streaks around the face for a stronger statement."

On Oct. 30, 2018, The FDA on Tuesday lead acetate from hair coloring products, a move prompted by petitions from consumer watchdog groups.  The agency’s final rule means lead is now banned in all cosmetic products. Hair dye was the last product in which it was still allowed. Lead acetate is already banned in the European Union and in Canada.

Abstract: Methods and systems for determining a sales channel for a product in a brick and mortar store include displaying to customers in a brick and mortar store information on an interactive data collection system relating to a product; collecting, via the data collection system, information indicative of customer interest in the product by tracking inputs at the interactive data collection system; collecting, via an online website, information indicative of customer interest relating to the product; and based upon both the information obtained at the brick and mortar store and the information obtained by the online website, determining a sales channel from a plurality of channels to offer the product for purchase by a customer.

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The film, currently in post-production, has an ensemble cast featuring Daniel Mays (Atonement), Tuppence Middleton (The Imitation Game), James Purefoy (Solomon Kane), David Hayman (Finding Your Feet), Dave Johns (I, Daniel Blake) Sam Swainsbury (Thor: The Dark World), Maggie Steed (Paddington 2) Christian Brassington (St Trinian’s 2) and Noel Clarke (Brotherhood). Here’s a first look at some of the team.

Broadway beloved! Lin Manuel-Miranda, who plays Jack the lamplighter in the movie, also attended the event

A barrier to develop bioinspired synthetic systems lies in deciphering the complexity of natural systems. The findings presented here increase our understanding toward biomimicking the water structure within the extremely efficient AQPs, which remains an important exploratory challenge. The I-quartet artificial water channel provides remarkable combinations of functions very close to those encountered in natural AQPs and provides a simplified system, where the structural alignment of confined water can be elucidated and quantified. Our comprehensive study shows that self-assembled I-quartets embedded into lipid bilayers form highly ordered structures containing chiral dipolar oriented water wires. Our complementary x-ray single-crystal, QCM-D, MD, and nonlinear SFG spectroscopic studies presented here provide the first insight into the hydrogen-bonded structure and dipolar orientation of the water molecules inside the I-quartet channels in the lipid membrane environment at a molecular level.

One report from a dermatology clinic in India detailed skin lesions, burning, and eye irritation among health problems resulting from playing Holi—perhaps from the chemicals in these preparations (Indian J. Dermatol. 2009, DOI: 10.4103/0019-5154.55632). But contamination of the cornstarch or flour that forms the powder base could also contribute to reactions, the authors note.

“Farmers are losing money,” Mr. Singh said. “We just survive. We are earning less and spending more.”