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Another point for the minimal, green website – mod_pagespeed. This can compress a document removing white space, comments and plenty of other chaff such as quotes around attributes when they are not needed for an element.

However, the best benefit of mod_pagespeed is that it enables images to be simply uploaded as is by the client/content creator for src_set images to be generated. These src_set images are for the device so your 4K gaming rig gets a different image to your person on an iphone. The bandwidth saving from this is huge. It also avoids fiddling around in Adobe products getting allegedly optimised images and it also avoids having to use a third party to optimise them for a price.

Images also should be served from a cookieless static domain, with cache settings set correctly, again with the service worker helping out serving what is available in local storage/cache.

Anyway, the debate has started and I think ‘green webpage design’ needs to be up there with ‘responsive design’ as a marketable buzzword. Perhaps with competitions for delivering ‘full fat wordpress’ or other CMS in as few bytes as possible.

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Jack Lenox
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Thank you so much M S. This comment is quite simply amazing. I heartily accept the rebuke and pretty much wholly agree with you.

I actually didn’t make the logo, I acquired it via The Noun Project (which I realise I should credit somewhere!) And unfortunately, my artistic skills mean I can barely design an icon in Inkscape, let alone code one by hand. However, you’ve definitely piqued my interest and I’m certainly going to look into the basics of coding SVGs by hand. It blew my mind that you were able to reduce it in size to less than a third of what it was.

I do think that The Noun Project is a fantastic resource, and I take my hat off to all the designers that share icons on it. But equally, it would be great to see more people embracing the benefits of producing SVGs by hand in a text editor.

Also, thank you for drawing my attention back to the PageSpeed modules. I’ve been peripherally aware of them for some time, but haven’t really looked at what they can do closely for a few years. I also didn’t know there was an Nginx module, which is preferential for me as I typically don’t use Apache in my setups these days.

Abbas Elmas
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Once upon a time there was a theme developed for reducing database queries too which is named “Frank”. You should also mention the backend of worpdress. Nice article thanks on behalf of world :)

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Paul Goodwin
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Great work – this has made me think… – I also love your FAQ section on the site. Great stuff

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Sporting goods retailer Intersport and Alibaba’s Tmall on Tuesday unveiled a co-branded store in Beijing complete with interactive features that offer consumers in China a more engaging and informative shopping experience.

Under the new name “Tmall x Intersport,” the two-story, 1,300 square-meter space that sits in Beijing’s tourist hotspot Qianmen has been transformed into a futuristic megastore. The revamp underscores that more global brands are recognizing the power of New Retail —tech-driven retail model pioneered by Alibaba that captures the best of online and offline shopping experiences.

“We believe Tmall is the ideal partner in our endeavor to further our engagement with Chinese consumers by providing them the best-quality and most-fashionable sports goods in the market,” said Victor Duran, chief executive officer of Switzerland-basedIntersport.

Established in 1968, Intersport is a leading retailer of sporting goods and outdoor equipment, with over 5,000 branches in 44 countries. It offers iconic sports names, such as Nike, Puma, Reebok, Adidas, North Face and Dynatour. Intersport made its foray into China in 2013 and opened its Tmall flagship store in September 2016.

“These new in-store technologies provide consumers in China an unprecedented shopping experience that is both entertaining and educational so they can have fun while shopping for the exact products that meet their unique demand,” the CEO said.

Currently, Intersport has 24 stores in China with the goal of expanding to at least 100—a combination of bigger flagship stores in major cities and smaller specialty stores—in the next couple of years. “It makes sense to have Tmall technologies to be the link to connect all the stores together,” Duran said.

New Retail Is the New Solution

Many industry watchers have pointed to New Retail as the solution for brick-and-mortar retailers feeling the squeeze from e-commerce. By harnessing engaging technologies, store owners can attract more customers through both online and offline channels. Moreover, these technologies can generate insights to help businesses gain a more-precise view of China’s market trends and customer preferences.

“We are excited to see an extensive range of Tmall’s New Retail technologies and features under one roof in Intersport’s store,” said Jessica Liu, president of Tmall Fashion and Luxury. “What’s even more encouraging is to see our merchants embracing the New Retail concept and exploring its potential. When customers try out these features firsthand, we are confident that they will see the convergence of online and offline shopping as the future of retail.”

Intersport is the latest example of how Alibaba’s New Retail technology is helping brands build up and reimagine their business in China since the push began in late 2015. To date, Tmall Fashion has collaborated with over 400 brands, including top names such as Burberry and Zara, and upgraded over 50,000 storefronts all over China. Liu said the goal is to increase the collaboration to a total of 1,000 brands and help digitize 200,000 storefronts nationwide in the next 12 months.

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Braiding a molecular knot with eight crossings

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13 Jan 2017: Vol. 355, Issue 6321, pp. 159-162 DOI: 10.1126/science.aal1619
Jonathan J. Danon
School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
Anneke Krüger
School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
David A. Leigh
School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
Jean-François Lemonnier
School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
Alexander J. Stephens
School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
Iñigo J. Vitorica-Yrezabal
School of Chemistry, University of Manchester, Manchester M13 9PL, UK.
Steffen L. Woltering
School of Chemistry, University of Manchester, Manchester M13 9PL, UK.

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Three strands ironed closely together

It is not uncommon when braiding hair or bread to intertwine three different strands. At the molecular level, however, synthetic knots have thus far been restricted to architectures accessible from two-strand braids. Danon used iron ion coordination to guide three organic ligand strands to form a knot geometry with eight separate crossings.

, this issue p. 159


Knots may ultimately prove just as versatile and useful at the nanoscale as at the macroscale. However, the lack of synthetic routes to all but the simplest molecular knots currently prevents systematic investigation of the influence of knotting at the molecular level. We found that it is possible to assemble four building blocks into three braided ligand strands. Octahedral iron(II) ions control the relative positions of the three strands at each crossing point in a circular triple helicate, while structural constraints on the ligands determine the braiding connections. This approach enables two-step assembly of a molecular 8 knot featuring eight nonalternating crossings in a 192-atom closed loop ~20 nanometers in length. The resolved metal-free 8 knot enantiomers have pronounced features in their circular dichroism spectra resulting solely from topological chirality.


Vol 355, Issue 632113 January 2017

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Braiding a molecular knot with eight crossings

By Jonathan J. Danon , Anneke Krüger , David A. Leigh , Jean-François Lemonnier , Alexander J. Stephens , Iñigo J. Vitorica-Yrezabal , Steffen L. Woltering

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