25 Jun 16:16

[ASAP] Bond-Forming and -Breaking Reactions at Sulfur(IV): Sulfoxides, Sulfonium Salts, Sulfur Ylides, and Sulfinate Salts

by Daniel Kaiser, Immo Klose, Rik Oost, James Neuhaus, and Nuno Maulide*†

TOC Graphic

Chemical Reviews
DOI: 10.1021/acs.chemrev.9b00111
24 Jun 05:01

Comic for June 24, 2019

Dilbert readers - Please visit Dilbert.com to read this feature. Due to changes with our feeds, we are now making this RSS feed a link to Dilbert.com.
24 Jun 05:05

Comic for 2019.06.24

New Cyanide and Happiness Comic
24 Jun 07:10

Comic: oVoid

by Tycho@penny-arcade.com (Tycho)
New Comic: oVoid
24 Jun 06:04

The Raspberry Pi 4 brings faster CPU, up to 4GB of RAM

by Ron Amadeo

Today, Raspberry Pi is introducing a new version of its popular line of single-board computer. The Raspberry Pi 4 Model B is the fastest Raspberry Pi ever, with the company promising "desktop performance comparable to entry-level x86 PC systems."

The new model is built around a Broadcom BCM2711 SoC, which, with four 1.5GHz Cortex A72 CPU cores, should be a big upgrade over the quad-core Cortex A53 CPU in the Raspberry Pi 3. The RAM options are the even bigger upgrade, though, with options for 1GB, 2GB, and even 4GB of DDR4. The Pi 3 was limited to 1GB of RAM, which really stung for desktop-class use cases.

There have been some upgrades and tweaks to the Pi 4 I/O, too. The Gigabit Ethernet returns, as do the four USB ports, but two of them get an upgrade to USB 3.0. Power is now supplied via a USB-C port, instead of the aging Micro USB of the Pi 3. The headphone jack returns, too, and it's still a four-pole solution providing audio and composite video.

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24 Jun 21:23

Comic: 2019-06-24

New Comic: 2019-06-24
24 Jun 04:33

Out for the Count

We're in too deep, we can't change the name again now.
24 Jun 16:12

[ASAP] Triphenylene-Bridged Trinuclear Complexes of Cu: Models for Spin Interactions in Two-Dimensional Electrically Conductive Metal–Organic Frameworks

by Luming Yang†, Xin He†, and Mircea Dinca?*

TOC Graphic

Journal of the American Chemical Society
DOI: 10.1021/jacs.9b04822
24 Jun 19:40

Help! My Daughter Won’t Talk to Me Because I Left Her Dog Out of My Will.

by Daniel Mallory Ortberg
Laurie compares my grandchildren to her dog, and says Spot deserves as much as his "human cousins."
24 Jun 05:47

Villain-coded

by David M Willis
24 Jun 18:19

What is Existentialism?

Also there is no point to anything and then you die. But you are super free in the meantime, so...
24 Jun 08:56

Girl Genius for Monday, June 24, 2019

The Girl Genius comic for Monday, June 24, 2019 has been posted.
24 Jun 07:21

Comic: oVoid

by Tycho@penny-arcade.com (Tycho)
New Comic: oVoid
25 Jun 05:04

Comic for 2019.06.25

New Cyanide and Happiness Comic
24 Jun 15:05

Ancient Peruvian engineering could help solve modern water shortages

by Kiona N. Smith
Photo of ancient canal.

Enlarge / Diversion canals channel water into earth-bottomed infiltration canals like this one, where water can begin to soak into the ground on its way to a pond or basin. (credit: Musuq Briceño, CONDESAN, 2012.)

Rain seldom falls on the desert lowlands of coastal Peru, so people in the area have always depended on the water that flows down from the Andes during the rainy season. But streams in this part of the world come and go quickly, so indigenous people built a system of canals and ponds to channel excess rainwater and create groundwater. Now a group of researchers says that a scaled-up version could help improve Peru’s water management.

Ancient engineers (not aliens)

1,400 years ago, Chavin and Wari indigenous communities on the slopes of the Andes Mountains dug systems of stone-lined and earthen canals to channel excess rainwater from streams to areas where the ground could soak up more of the water. From there, the water gradually trickled through sediment and cracks in the rock until it reached springs downslope. “Water is stored in the soils and travels much slower beneath the surface than it would as overland flow,” Boris Ochoa-Tocachi, a civil engineer at Imperial College London, told Ars Technica. Water that would otherwise have been lost to flooding feeds springs that remain active even into the dry season.

Today, most of these once-widespread canals—called amunas in the Quechua language—lie abandoned or clogged. But in a few rural communities, like Huamantanga in the central Andes, people have used and maintained parts of the ancient amunas for centuries. Eleven of the original canals still operate, feeding 65 active springs and 14 small ponds.

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24 Jun 16:12

[ASAP] Divergent Synthesis of Densely Substituted Arenes and Pyridines via Cyclotrimerization Reactions of Alkynyl Triazenes

by Jin-Fay Tan†, Carl T. Bormann‡, Florian G. Perrin‡, F. Mark Chadwick‡, Kay Severin*‡, and Nicolai Cramer*†

TOC Graphic

Journal of the American Chemical Society
DOI: 10.1021/jacs.9b04111
25 Jun 05:18

What

by David M Willis
26 Jun 06:38

Girl Genius for Wednesday, June 26, 2019

The Girl Genius comic for Wednesday, June 26, 2019 has been posted.
25 Jun 05:02

Comic for June 25, 2019

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25 Jun 16:04

Saturday Morning Breakfast Cereal - Passive

by tech@thehiveworks.com


Click here to go see the bonus panel!

Hovertext:
I have been moving homes for 2 weeks and am out of cleverness. Wish me luck tomorrow!


Today's News:
25 Jun 20:42

[ASAP] Self-Assembly of Catalytically Active Supramolecular Coordination Compounds within Metal–Organic Frameworks

by Rosa Adam§?, Marta Mon†?, Rossella Greco§, Lucas H. G. Kalinke†?, Alejandro Vidal-Moya§, Antonio Fernandez*‡, Richard E. P. Winpenny?, Antonio Dome´nech-Carbo´?, Antonio Leyva-Pe´rez*§, Donatella Armentano*#, Emilio Pardo*†, and Jesu´s Ferrando-Soria*†

TOC Graphic

Journal of the American Chemical Society
DOI: 10.1021/jacs.9b03914
25 Jun 13:30

Saturday Morning Breakfast Cereal - Passive

by tech@thehiveworks.com


Click here to go see the bonus panel!

Hovertext:
I have been moving homes for 2 weeks and am out of cleverness. Wish me luck tomorrow!


Today's News:
26 Jun 14:13

Reading in the Original

The articles are much shorter, but I assume that's because this version predates the merger with the Hawaiian text that created the modern Hawaiian-Greek hybrid wiki-pedia.
26 Jun 05:02

Comic for June 26, 2019

Dilbert readers - Please visit Dilbert.com to read this feature. Due to changes with our feeds, we are now making this RSS feed a link to Dilbert.com.
26 Jun 09:37

Comic: Pokemon No

by Tycho@penny-arcade.com (Tycho)
New Comic: Pokemon No