An intuitive method is presented for detecting pseudosymmetries in Z' > 1 cases as a complement to well-proven strategies already available in the literature. It is based in the simple idea that the mid-points between equivalent atoms in symmetrically related mol­ecules are disposed according to simple well-known patterns, which are easily recognizable by optical inspection. A number of Z' = 4 cases in the literature are analyzed, which allows some of the potentialities of the method to be revealed.

The crystal structure of tri­phenyl­methanol, C19H16O, has been redetermined using data collected at 295 and 153 K, and is compared to the model published by Ferguson et al. over 25 years ago [Ferguson et al. (1992). Acta Cryst. C48, 1272–1275] and that published by Serrano-González et al., using neutron and X-ray diffraction data [Serrano-González et al. (1999). J. Phys. Chem. B, 103, 6215–6223]. As predicted by these authors, the hy­droxy groups are involved in weak inter­molecular hydrogen bonds in the crystal, forming tetra­hedral tetra­­mers based on the two independent mol­ecules in the asymmetric unit, one of which is placed on the threefold symmetry axis of the Roverline{3} space group. However, the reliable determination of the hy­droxy H-atom positions is difficult to achieve, for two reasons. Firstly, a positional disorder affects the full asymmetric unit, which is split over two sets of positions, with occupancy factors of ca 0.74 and 0.26. Secondly, all hy­droxy H atoms are further disordered, either by symmetry, or through a positional disorder in the case of parts placed in general positions. We show that the correct description of the hydrogen-bonding scheme is possible only if diffraction data are collected at low temperature. The pro­chiral character of the hydrogen-bonded tetra­meric supra­molecular clusters leads to enanti­omorphic three-dimensional graphs in each tetra­mer. The crystal is thus a racemic mixture of supS and supR motifs, consistent with the centro­symmetric nature of the Roverline{3} space group.

Experimental electron-density studies based on high-resolution diffraction experiments allow halogen bonds between heavy halogens to be classified. The topological properties of the electron density in Cl⋯Cl contacts vary smoothly as a function of the inter­action distance. The situation is less straightforward for halogen bonds between iodine and small electronegative nucleophiles, such as nitro­gen or oxygen, where the electron density in the bond critical point does not simply increase for shorter distances. The number of successful charge–density studies involving iodine is small, but at least individual examples for three cases have been observed. (a) Very short halogen bonds between electron-rich nucleophiles and heavy halogen atoms resemble three-centre–four-electron bonds, with a rather symmetric heavy halogen and without an appreciable σ hole. (b) For a narrow inter­mediate range of halogen bonds, the asymmetric electronic situation for the heavy halogen with a pronounced σ hole leads to rather low electron density in the (3,−1) critical point of the halogen bond; the properties of this bond critical point cannot fully describe the nature of the associated inter­action. (c) For longer and presumably weaker contacts, the electron density in the halogen bond critical point is only to a minor extent reduced by the presence of the σ hole and hence may be higher than in the aforementioned case. In addition to the electron density and its derived properties, the halogen–carbon bond distance opposite to the σ hole and the Raman frequency for the associated vibration emerge as alternative criteria to gauge the halogen-bond strength. We find exceptionally long C—I distances for tetra­fluoro­diiodo­benzene molecules in cocrystals with short halogen bonds and a significant red shift for their Raman vibrations.

The enanti­opure monopyrrolidine derivative (2S)-methyl (Z)-5-(2-tert-but­oxy-1-cyano-2-oxo­ethyl­idene)pyrrolidine-2-carboxyl­ate, C13H18N2O4, (1), represents a potential ligand and an attractive inter­mediate for the synthesis of chiral metal com­plexes. At the mol­ecular level, the com­pound features an intra­molecular N—H⋯O hydrogen bond; neighbouring mol­ecules inter­act via N—H⋯N contacts to form chains along [100]. Due to its elemental com­position, resonant scattering of the target com­pound is entirely insignificant for diffraction experiments with Mo Kα and small even for Cu Kα radiation. A preliminary study with the harder radiation type confirmed the chiral space group and the suitability of the single crystal chosen; as expected, the results concerning the absolute structure remained com­pletely inconclusive. A second data collection with the longer wavelength gave satisfactory quality indicators for the correct handedness of the mol­ecule, albeit with high standard uncertainties. The absolute configuration has been assessed independently: CD spectra for both enanti­omers of the target mol­ecule were calculated and the spectrum for the S-configured stereoisomer was in agreement with the experiment. The Cotton effect of (1) may be ascribed to π–π* transitions from HOMO to LUMO and from HOMO to LUMO+1. As both independent techniques agree with respect to the handedness of the target mol­ecule, the absolute structure may be assigned with a high degree of confidence.

An error in an equation in the paper by Song et al. [Acta Cryst. (2019), C75, 1353–1358] is corrected.

An efficient synthesis of 1-aryl­isochromeno[3,4-d][1,2,3]triazol-5(1H)-ones, involving the diazo­tization of 3-amino-4-aryl­amino-1H-isochromen-1-ones in weakly acidic solution, has been developed and the spectroscopic characterization and crystal structures of four examples are reported. The mol­ecules of 1-phenyl­isochromeno[3,4-d][1,2,3]triazol-5(1H)-one, C15H9N3O2, (I), are linked into sheets by a combination of C—H⋯N and C—H⋯O hydrogen bonds, while the structures of 1-(2-methyl­phen­yl)isochromeno[3,4-d][1,2,3]triazol-5(1H)-one, C16H11N3O2, (II), and 1-(3-chloro­phen­yl)isochromeno[3,4-d][1,2,3]triazol-5(1H)-one, C15H8ClN3O2, (III), each contain just one hydrogen bond which links the mol­ecules into simple chains, which are further linked into sheets by π-stacking inter­actions in (II) but not in (III). In the structure of 1-(4-chloro­phen­yl)isochromeno[3,4-d][1,2,3]triazol-5(1H)-one, (IV), isomeric with (III), a combination of C—H⋯O and C—H⋯π(arene) hydrogen bonds links the mol­ecules into sheets. When com­pound (II) was exposed to a strong acid in methanol, qu­anti­tative conversion occurred to give the ring-opened transesterification product methyl 2-[4-hy­droxy-1-(2-methyl­phen­yl)-1H-1,2,3-triazol-5-yl]benzoate, C17H15N3O3, (V), where the mol­ecules are linked by paired O—H⋯O hydrogen bonds to form centrosymmetric dimers.

An operationally simple and time-efficient approach has been developed for the synthesis of racemic N-substituted 3-(2-aryl-2-oxoeth­yl)-3-hy­droxy­indolin-2-ones by a piperidine-catalysed aldol reaction between aryl methyl ketones and N-alkyl­isatins. These aldol products were used successfully as strategic inter­mediates for the preparation of N-substituted (E)-3-(2-hetaryl-2-oxo­ethyl­idene)indolin-2-ones by a stereoselective dehydration reaction under acidic conditions. The products have all been fully characterized by 1H and 13C NMR spectroscopy, by mass spectrometry and, for a representative selection, by crystal structure analysis. In each of (RS)-1-benzyl-3-hy­droxy-3-[2-(4-meth­oxy­phen­yl)-2-oxoeth­yl]indolin-2-one, C24H21NO4, (Ic), and (RS)-1-benzyl-3-{2-[4-(di­methyl­amino)­phen­yl]-2-oxoeth­yl}-3-hy­droxy­indolin-2-one, C25H24N2O3, (Id), inversion-related pairs of mol­ecules are linked by O—H⋯O hydrogen bonds to form R22(10) rings, which are further linked into chains of rings by a combination of C—H⋯O and C—H⋯π(arene) hydrogen bonds in (Ic) and by C—H⋯π(arene) hydrogen bonds in (Id). The mol­ecules of (RS)-1-benzyl-3-hy­droxy-3-[2-oxo-2-(pyridin-4-yl)eth­yl]indolin-2-one, C22H18N2O3, (Ie), are linked into a three-dimensional framework structure by a combination of O—H⋯N, C—H⋯O and C—H⋯π(arene) hydrogen bonds. (RS)-3-[2-(Benzo[d][1,3]dioxol-5-yl)-2-oxoeth­yl]-1-benzyl-3-hy­droxy­indolin-2-one, C24H19NO5, (If), crystallizes with Z' = 2 in the space group Poverline{1} and the mol­ecules are linked into com­plex sheets by a combination of O—H⋯O, C—H⋯O and C—H⋯π(arene) hydro­gen bonds. In each of (E)-1-benzyl-3-[2-(4-fluoro­phen­yl)-2-oxo­ethyl­idene]indolin-2-one, C23H16FNO2, (IIa), and (E)-1-benzyl-3-[2-oxo-2-(thiophen-2-yl)ethylidene]indolin-2-one, C21H15NO2S, (IIg), the mol­ecules are linked into simple chains by a single C—H⋯O hydrogen bond, while those of (E)-1-benzyl-3-[2-oxo-2-(pyridin-4-yl)ethyl­idene]indolin-2-one, C22H16N2O2, (IIe), are linked by three C—H⋯O hydrogen bonds to form sheets which are further linked into a three-dimensional structure by C—H⋯π(arene) hydrogen bonds. There are no hydrogen bonds in the structures of either (E)-1-benzyl-3-[2-(4-meth­oxy­phen­yl)-2-oxo­ethyl­idene]indolin-2-one, C24H19NO3, (IIc), or (E)-1-benzyl-5-chloro-3-[2-(4-chloro­phen­yl)-2-oxo­ethyl­idene]indolin-2-one, C23H15Cl2NO2, (IIh), but the mol­ecules of (IIh) are linked into chains of π-stacked dimers by a combination of C—Cl⋯π(arene) and aromatic π–π stacking inter­actions.

The positional change of nitro­gen-7 of the RNA constituent guanosine to the bridgehead position-5 leads to the base-modified nucleoside 5-aza-7-de­aza­guanosine. Contrary to guanosine, this mol­ecule cannot form Hoogsteen base pairs and the Watson–Crick proton donor site N3—H becomes a proton-acceptor site. This causes changes in nucleobase recognition in nucleic acids and has been used to construct stable `all-purine' DNA and DNA with silver-mediated base pairs. The present work reports the single-crystal X-ray structure of 7-iodo-5-aza-7-de­aza­guanosine, C10H12IN5O5 (1). The iodinated nucleoside shows an anti conformation at the glycosylic bond and an N conformation (O4'-endo) for the ribose moiety, with an anti­periplanar orientation of the 5'-hy­droxy group. Crystal packing is controlled by inter­actions between nucleobase and sugar moieties. The 7-iodo substituent forms a contact to oxygen-2' of the ribose moiety. Self-pairing of the nucleobases does not take place. A Hirshfeld surface analysis of 1 highlights the contacts of the nucleobase and sugar moiety (O—H⋯O and N—H⋯O). The concept of pK-value differences to evaluate base-pair stability was applied to purine–purine base pairing and stable base pairs were predicted for the construction of `all-purine' RNA. Furthermore, the 7-iodo substituent of 1 was functionalized with benzo­furan to detect motional constraints by fluorescence spectroscopy.

Crystals of the rare earth metal polytelluride LaTe1.82(1), namely, lanthanum telluride (1/1.8), have been grown by molten alkali halide flux reactions and vapour-assisted crystallization with iodine. The two-dimensionally incommensurately modulated crystal structure has been investigated by X-ray diffraction experiments. In contrast to the tetra­gonal average structure with unit-cell dimensions of a = 4.4996 (5) and c = 9.179 (1) Å at 296 (1) K, which was solved and refined in the space group P4/nmm (No. 129), the satellite reflections are not compatible with a tetra­gonal symmetry but enforce a symmetry reduction. Possible space groups have been derived by group–subgroup relationships and by consideration of previous reports on similar rare earth metal polychalcogenide structures. Two structural models in the ortho­rhom­bic superspace group, i.e. Pmmn(α,β,1 over 2)000(−α,β,1 over 2)000 (No. 59.2.51.39) and Pm21n(α,β,1 over 2)000(−α,β,1 over 2)000 (No. 31.2.51.35), with modulation wave vectors q1 = αa* + βb* + 1 over 2c* and q2 = −αa* + βb* + 1 over 2c* [α = 0.272 (1) and β = 0.314 (1)], have been established and evaluated against each other. The modulation describes the distribution of defects in the planar [Te] layer, coupled to a displacive modulation due to the formation of different Te anions. The bonding situation in the planar [Te] layer and the different Te anion species have been investigated by density functional theory (DFT) methods and an electron localizability indicator (ELI-D)-based bonding analysis on three different approximants. The temperature-dependent electrical resistance revealed a semiconducting behaviour with an estimated band gap of 0.17 eV.

File: (L-R) "The Sarah Silverman Program" writer Harris Wittels, comedian Sarah Silverman, executive producer/head writer Dan Sterling and actress Laura Silverman, arrive at Comedy Central's Emmy Awards party at the STK restaurant Sept. 21, 2008 in Los Angeles.; Credit: Ethan Miller/Getty Images

Harris Wittels, a comedy writer who worked on "Parks & Recreation," has died at 30, the Los Angeles Police Department's Jane Kim tells KPCC.

Wittels was discovered by his assistant around 12 p.m., Kim said, and was already dead. Kim said that Wittels' death was a possible overdose, but that the Coroner's Office would determine the cause of death. Wittels had attended drug rehab twice.

Comedy Central, where Wittels worked on "The Sarah Silverman Program" and "Secret Girlfriend," confirmed Wittels' death, as did the comedy show he appeared at Wednesday night.

Comedy Central tweet

Meltdown Show tweet

Wittels was also well known for his @Humblebrag Twitter account and later book, helping to popularize the idea online of the false modesty of bragging while trying not to look like you're bragging.

Wittels had spoken about his struggles with addiction in places including Pete Holmes's podcast "You Made It Weird" in a November episode.

"I just really stopped caring about my life," Wittels said on "You Made It Weird," explaining how he got into doing drugs. "I just really started to think, well, if I'm only here for 80 years, then who cares if I spend it high or not?"

Wittels received his first big break when Sarah Silverman saw him performing comedy and gave him a job writing for her Comedy Central show.

Wittels also wrote for HBO's "Eastbound & Down," several MTV awards shows and the American Music Awards. He had a recurring role on "Parks & Recreation" and was a regular guest on the "Comedy Bang Bang" podcast.

Comedians, actors and fans mourned Wittels' death online.

Harris Wittels Storify

See Wittels in a scene from "Parks & Recreation":

Wittels on Parks & Recreation

Listen to Wittels on "Comedy Bang Bang":

Wittels on Comedy Bang Bang

This story has been updated.

This content is from Southern California Public Radio. View the original story at SCPR.org.

Announcement cards and envelopes by designer Marc Friedland which are used by presenters at the Oscars to announce winners are on display at the food and decor preview Feb. 4, 2015 of this years Governors Ball, the post-Oscar celebration which follows the 87th Oscars ceremony on Feb. 22 in Hollywood.; Credit: Robyn Beck/AFP/Getty Images

Ready for your 2015 Oscars party? We've got printable Oscars ballots and the bingo cards you need to prove your superiority over your movie-loving friends during your Academy Awards viewing party. Here are the party printables you'll need to play along with Sunday's show, with TV coverage kicking off at 4 p.m. Pacific. (Get caught up on KPCC's 2015 Oscars coverage right here to have more fun and help make your picks!)

Printable official Oscars ballot

• Download, print, and play at home. Listen to "The Frame's" preview of the Academy Awards, see what "FilmWeek's" critics have to say about who will win, then make your own decisions on Sunday. Our crystal ball Oscars predictor/awards tracker can also help the prognostication efforts with a rundown of nominee buzz, awards already won, official trailers, photos and more.
• You can also play along with friends online on the official Academy Awards site or with the New York Times. (If you want to see KPCC's Mike Roe's picks and play against him in either online game, go here for the official site and here for the New York Times.)

2015 Oscars ballot

Printable Oscars bingo cards

• Download, print and play at home. Use our custom generator to create as many cards as you need for your party.
• How to play: Mark off each block when you hear these words or see these things happen during the Oscars telecast on Sunday. When you get five blocks in a row (horizontally, vertically, or diagonally) stand up and shout "OSCAR!!" Alternate rules: Play as a drinking game and for every block, take a sip. Finished a row? Finish your scotch.

Interactive Oscars bingo cards 

• WNYC pays tribute to the annual exercise in entertainment award show parody with a portable, computerized bingo. Play on your phone, iPad, computer or print a card. Refresh for new combinations.

This content is from Southern California Public Radio. View the original story at SCPR.org.

A Nintendo Entertainment System.; Credit: Mark Ramsay/Flickr Creative Commons

There have been plenty of video game movies over the years, but there have been far fewer actually good ones. "Ready Player One," based on the 2011 video game-inspired novel, has the chance to be a great one thanks to the announcement that Steven Spielberg has signed on to direct.

That book was inspired by classic video games, and was written using classic video game cheats to play parts of classic games and write them into his book, author Ernest Cline said in a recent talk. That got us thinking about the classic video game cheats and secrets that stuck with us from our younger days playing classic video games — here's our top 11.

1. The Konami Code

Up up down down left right left right B A start! This code became such a part of video game culture that it got its own name. It was popularized in various games made by Konami, particularly Contra, leading to it also being known as the "Contra Code" for its ability to give you 30 lives in the game. Before the Internet, it was spread through gaming magazines and word of mouth — it was so influential that there are still developers who put it in their games. (There's even an entire Wikipedia page of games, both from Konami and others, that use the Konami Code. It's even been used on some websites.)

What is the Konami Code

2. Street Figher II Turbo's turbo

The game that I actually used a code for the most as a kid, the Super Nintendo code down, R, up, L, Y, B on the second controller didn't give you any advantages — it just kicked the speed up. By default, you had a few selections for how fast the game would be, but you could multiple that several-fold with this code, letting you and your friends battle at what at the time felt unbelievably fast.

3. Super Mario Bros.'s Minus World

This one doesn't involve a code, but players managed to discover what was deemed a glitch in the game that put you into a messed up version of another level, dubbed by fans the Minus World due to just "-1" instead of a full level number appearing at the top of the screen. There was no way to escape the glitched level, no matter how hard you might try, sending you to play it over and over again until your time ran out or you were killed by enemies. Still, modern players have found that you can go on thanks to various computer emulators and the like; see some of the worlds beyond below:

Minus World video

4. Metroid and Justin Bailey

Fans early on discovered that the password JUSTIN BAILEY allowed you to start with all of the available weapons along with plenty of life and ammo. Fans didn't know whether Justin Bailey was a reference to an actual person, just a code coincidence or something else, but that didn't stop them from eagerly playing through with this code. It also removed lead character Samus Aran from her armor, allowing players to discover that the game's star was an early female lead character, even if her armor didn't clue players in before the end of the game without the code.

Justin Bailey video

5. Doom's God mode

By typing the letters iddqd in PC game Doom, players could enable God mode, making them essentially invincible and letting them power through the early first-person shooter. The code had been available in developer id's earlier game Wolfenstein, but hadn't been quite as easily accessible. So, if you ever need a power boost when you're fighting on Mars, Doom has the answer. (Unfortunately, we don't believe this provides any extra protection for NASA's Mars rovers.)

6. Mortal Kombat's Reptile

The developers of Mortal Kombat made a battle against Reptile unbelievably hard for Mortal Kombat fans, including putting some randomness into whether doing what you were supposed to do to unlock the character would even work. Still, players happily pumped in extra quarters for the chance to face off against Reptile, a character with a look that mirrored that of characters Sub-Zero and Scorpion, just with a different color. Players had to achieve a Double Flawless victory on the Pit level, finish the match using their fatality move, and there also had to be a silhouette flying past the moon in the background — which only happened every sixth game.

Mortal Kombat: Reptile

7. The Legend of Zelda's Second Quest

The Legend of Zelda was a pretty challenging early adventure game, one of the first releases for the Nintendo home video game console. When you beat the game, you were given the option to go on a "Second Quest," which was a tweaked version of the game you just played except waaaaay harder. However, if you thought you were the coolest kid on the block and were so awesome you didn't need a warmup, you could name your character "ZELDA" (in one of the more obvious cheats in video game history) and skip ahead to that Second Quest from the start. You would then likely cry from how hard it was and start another new game with a different name.

8. NBA Jam's celebrity secret characters

A variety of celebrities from sports, music, and even politics were available by putting in various initials combined with buttons on the controller. These included then-President Bill Clinton, Al Gore, Warren Moon and more. That tradition has been continued in more recent NBA Jam games, with President Obama and others available for your video gaming pleasure.

9. GoldenEye's extra modes

There were a wide variety of cheat codes for GoldenEye, widely considered one of the all-time great first-person shooters. Sure, you could use codes to unlock different levels, but the reason these codes are remembered is because it gave you all sorts of new ways to play against your friends. The game also had an actual cheat menu that would appear if you accomplished one of a variety of goals, and from that menu you could cheat extra hard by using your controller to unlock things like a paintball mode, turbo mode, modes with both giant heads and teeny-tiny James Bonds and more.

10. Sonic The Hedgehog 2's Debug Mode

The Sonic debug mode is the perfect example of why so many games included cheats back in the day: They were often for the developers to be able to more easily play the games while looking for bugs and doing other testing. Sonic 2 let you get to an actual debug mode by playing various sounds from the level select screen (1, 9, 9, 2, 1, 1, 2, 4, for your reference), then pressing start and holding the A button. Developers later put them in for fun and intended them for the players to discover, but some of the early cheat codes were just meant for developers — but players proved more intrepid than they may have anticipated.

Sonic debug mode

11. Mike Tyson's Punch-Out: Go straight to Mike Tyson

There was actually a password mode in this game — before games had the option to save, plenty of games gave you codes that let you get back to where you were before. This is one of the examples from that darker time, where whether you played through opponents like Glass Joe and Bald Bull or not, you could try your changes against Lightning Mike (at least until the video game's license ran out and he was replaced in future editions with the way less exciting "Mr. Dream"). You better have had a pen and paper ready when your friend started yelling at you 007 373 5963 for you to use on your own copy of the game — no sharing. The game is hard enough that even Mike Tyson had some trouble fighting himself:

Mike Tyson vs. Mike Tyson

Let us know in the comments the classic video games — and the classic cheat codes and secrets — that inspired you.

This content is from Southern California Public Radio. View the original story at SCPR.org.

Brock Lesnar after losing his championship in the main event of Wrestlemania 31.; Credit: WWE

World Wrestling Entertainment held their annual Wrestlemania show last weekend in Northern California, the culmination of another year's worth of spectacle. According to the company, it was their highest grossing event of all-time, drawing $12.6 million, with an official attendance placing it fifth on their list of all-time crowds for the event. The show was headlined by former UFC Heavyweight Champion Brock Lesnar going up against up-and-coming star (and a relative of Dwayne "The Rock" Johnson) Roman Reigns.

WWE Network

It comes at a time when the company has embarked on a new way of making money: their over-the-top online programming provider, the WWE Network, where fans can pay $9.99 a month to see programming including what formerly used to cost $45 for most shows and $60 for Wrestlemania. They're one year in now on gambling that enough fans will want the Network that it will ultimately make them more money in the long-term, despite losing that pay-per-view revenue. Wall Street doesn't appear to be buying it — after announcing the day after Wrestlemania that they'd hit 1.3 million subscribers, WWE's stock took a significant loss.

"The point is not whether it's real or if it's staged. The point is, are you entertained by it, or not?" former WWE announcer Jim Ross told KPCC in an interview. WWE is looking for more fans to be entertained enough to plunk down $9.99 for all the pro wrestling content they want.

NXT

They're also in a transitional period with their audiences. They've launched a new show that's only on the Network called "NXT," turning their minor league into a program targeting hardcore pro wrestling fans with a different style of show than the more family-targeted "Raw" and "Smackdown." It's also where they groom potential future stars, many of whom seem to break the mold of some of the traditional stars on WWE's main roster.

They're signing up talent that's been getting buzz on the independent circuits, trying to create their own underground movement that hopefully spells money, and taking the NXT brand on tour for the first time. On the Raw after Wrestlemania, several NXT stars made their debut on the main roster. That follows a sell-out crowd (albeit at a smaller 5,000 seat venue) on the Friday night before Wrestlemania for a non-televised NXT show.

Give Divas a chance

WWE also faces cultural forces pushing them in new directions, including a difference in how society deals with gender. When WWE executive Stephanie McMahon, daughter of the famed Vince McMahon, tweeted in support of Patricia Arquette's speech calling for greater equality for women at the Academy Awards, one of their own wrestlers, AJ Lee, responded by publicly calling Stephanie McMahon out on Twitter for not promoting the women in her own company equally and paying them less than the male stars.

AJ tweet 1

AJ tweet 2

Of course, the women in the company aren't given the same prominence as the men in part because it's felt that they won't make the company as much money. Still, it forced WWE's hand and Stephanie McMahon and the company as a whole publicly embraced the idea of giving the women (who WWE brands as "divas") a chance with the Give Divas A Chance movement (and accompanying trending hashtag).

What's next

The women have been promoted nearly equal to the men in that underground NXT league, but only time will tell if it continues to trickle upward. Wrestlemania didn't seem to show huge promise of that happening, with the one women's match of the show only getting a few minutes in the ring. However, the show also included a high-profile storyline with UFC female fighter and champion Ronda Rousey alongside the Rock, going up against Stephanie McMahon and Triple H, so there appears to be the room for women in prominent positions when they have the right storyline.

Whether WWE is able to wade through these forces of change to make more money — and perhaps regain some of the cultural currency that they've lost since becoming a monopoly and purchasing their top competition in 2001 — remains to be seen. They've stayed relatively steady despite a challenge from UFC, which many see as being what pro wrestling would be like if WWE didn't present fictional  They'll have to hope that giving new stars, including "divas," a chance will take them to another level.

This content is from Southern California Public Radio. View the original story at SCPR.org.

Entangled embedded periodic nets and crystal frameworks are defined, along with their dimension type, homogeneity type, adjacency depth and periodic isotopy type.

The application of groupoids to modular crystal structures is presented.

Features of azimuthal plots for RHEED and its new counterpart, RHEPD, are discussed. The plots, for both electrons and positrons, are determined using dynamical diffraction theory.

A method is adapted to generate a full rank realization of an abstract regular polyhedron with automorphism group H3.

Structure-mining finds and returns the best-fit structures from structural databases given a measured pair distribution function data set. Using databases and heuristics for automation it has the potential to save experimenters a large amount of time as they explore candidate structures from the literature.

To describe multiple Bragg reflection from a thick, ideally imperfect crystal, the transport equations are reformulated in three-dimensional phase space and solved by spectral collocation in the depth coordinate. Example solutions illustrate the orientational spread of multiply reflected rays and the distortion of rocking curves, especially for finite detectors.

A new type of X-ray LLL interferometer, a `hard' interferometer, which has both a base and a `ceiling', is tested for experimental investigations. The tested interferometer has no preliminary uncontrollable moiré and can be used for object and deformation investigations.

The Debye scattering equation (DSE) is generalized and augmented in order to account for moderate texture effects, yielding the differential cross section as a function of atomic coordinates and texture coefficients subject to symmetry constraints. Implications for the evaluation of the pair distribution function (PDF) as a direct transform of powder diffraction data from textured samples are also discussed.

Quaternion methods for obtaining solutions to the problem of finding global rotations that optimally align pairs of corresponding lists of 3D spatial and/or orientation data are critically studied. The existence of multiple literatures and historical contexts is pointed out, and the algebraic solutions of the quaternion approach to the classic 3D spatial problem are emphasized. The treatment is extended to novel quaternion-based solutions to the alignment problems for 4D translation and orientation data.

A Landau theory for the wurtzite-based heterovalent ternary semiconductor ZnSnN2 is developed and a first-order reconstructive phase transition is proposed as the cause of observed crystal structure disorder. The model infers that the phase transition is paraelectric to antiferroelectric.

Combining sodium hydride with some solvents can be a bad idea, as a group of researchers from Corteva Agriscience and Dow Chemical remind the chemistry community in Organic Process Research & Development ,(2019, DOI: 10.1021/acs.oprd.9b00276). Reports of explosions from combining NaH with a polar aprotic solvent such as dimethyl sulfoxide (DMSO), N,N-dimethylformamide (DMF), and N,N-dimethylacetamide […]

The post Don’t mix sodium hydride with polar aprotic solvents appeared first on CENtral Science.

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At a recent LAUSD District 3 school board debate, teachers dressed as FBI agents in protest of board member Tamar Galatzan's support of the iPad program.; Credit: Annie Gilbertson/KPCC

As the city's March 3 primary election draws near, Los Angeles Unified school board candidates are blasting incumbents for the controversial iPad program.

Opponents sharply criticized the $1.3 billion bond-funded program at a debate Tuesday in West San Fernando Valley, where District 3 school board member Tamar Galatzan was elected in 2007.

"Galatzan said the district is going in the right direction," declared candidate Carl Petersen, a parent and businessman. "I don’t know how anyone can look at the events of the past year and come to that conclusion."

RELATED: LAUSD District 5 school board candidates face off in debate

The program attracted national attention last December when the FBI raided district offices and carted off 20 boxes of bids, evaluations and correspondences with executives at Apple and its subcontractor Pearson, the manufacturer of the learning software loaded on to each device. The investigation is ongoing.

At the debate, teachers dressed in dark windbreakers with FBI plastered on the back in protest to Galatzan's support of the program. (They have not held similar demonstrations at election events in East Los Angeles' District 5, where Bennett Kayser, a teacher union ally, is running for re-election.)

Tom Richards, a Granada Hills parent, said he considers the iPad program a central issue as he weighs candidates.

"I think it's absolutely ridiculous," Richards said. "I don't believe that's a good way to spend the money that they have. Looking at some really fundamental needs — we don't have a librarian, but we want to give iPads?" 

Galatzan was an early advocate for more technology in the classroom; it was her goal even before the iPad was on the market.

"There is a whole world out there that can be accessed through technology, and we need to take advantage of that," Galatzan told KPCC.

Her advocacy of technology hasn't always been controversial. Galatzan points to her 2010 initiative to fund school computer labs with a settlement from Microsoft.

The school board's support of the iPad program varied the first year, but waned in August after KPCC published a series of emails showing district administrators had close ties with Pearson, calling into question whether the bidding process was fair. Problems with the rollout of the devices and the effectiveness of the software they contained also eroded support for the program.

Still, school board members unanimously approved more iPad purchases after the FBI investigation came to light. Superintendent Ramon Cortines said the tablets were necessary for new digital state tests scheduled this spring and offered to purchase them under a different contract with Apple to avoid complications involving the federal probe.

If the candidates' positions are a measure of support for the program, it's unpopular at best.  All of Galatzan's opponents are against it. 

When asked in a KPCC election survey conducted if he supported the iPad program, Scott Schmerelson, a retired administrator and District 3 contender, responded: "Not when you are paying for them from LAUSD Bond Money! The taxpayers generously supported the bond issue with the belief that the money would be used to repair and modernize our schools." 

Candidate Ankur Patel said in his answer to the survey, "I oppose the LAUSD’s iPad program. Throughout the program, important questions were not asked enough, and when they were, they were not answered properly."

Filiberto Gonzalez, another Galatzan challenger, said of the iPad project: "It was a mistake and ill-conceived from the very beginning. As was noted in the report by the U.S. Department of Education last month, the Common Core Technology Project (iPad program) lacked 'established metrics of success' and 'was difficult to show the impact of the investment.'

Elizabeth Badger Bartels is also running for the District 3 seat, but did not respond to the survey by deadline.

For more information on the school board candidates' positions and their backgrounds, read KPCC's 2015 Los Angeles primary election guide.

This content is from Southern California Public Radio. View the original story at SCPR.org.

LAUSD Superintendent Ramon Cortines commented Thursday on teacher contract talks that have been ongoing since July.; Credit: Benjamin Brayfield/KPCC

A budget deficit is preventing the Los Angeles Unified School District from offering teachers more than a 5 percent raise, Superintendent Ramon Cortines said Friday.

"I want some resolution," Cortines told reporters, but he said the district is now projecting a shortfall of $160 million heading into the next school year.

United Teachers Los Angeles, the union representing 31,000 teachers, declared an impasse Thursday in the contract negotiations. The two sides have been bargaining since July.

The teachers haven't had a pay increase in eight years, and their salaries are below that of neighboring districts. 

"You are not going to recruit and retain the quality teachers you need," UTLA President Alex Caputo-Pearl told KPCC's AirTalk this week. The union is seeking an 8.5 percent raise as well as smaller class sizes, more counselors and nurses, and revised teacher evaluations.

Cortines said the district's pay raise offer of 5 percent, retroactive to July 2014, would help make salaries more competitive. But he said the projected deficit is why LAUSD can't afford more.

Projections for the deficit have changed over the months. Last October, it was $365 million; in January, $88 million; and this month, $160 million. 

Teachers union representatives said California schools are receiving more money this year than any time since the recession. Gov. Jerry Brown's Local Control Funding process, which gives local districts more resources for education, is projected to garner the district $240 million more next school year. 

Cortines said he hopes to reach an agreement and he cautioned against any walkout.

"You talk about a budget deficit? It will exacerbate the budget deficit, because parents have other options," Cortines said. "They can go to other schools, private, parochial schools, they can go to charter schools, etc."

Cortines said a mediator is being called into the talks to help resolve the impasse.

The superintendent also repeated his doubts that the district can currently afford to put a computer in the hands of every district student. The program, a key initiative of his predecessor, John Deasy, used bond funds to pay for iPads and other devices.

Cortines said a statement elaborating on his remarks to reporters that "as we are reviewing our lessons learned, there must be a balanced approach to spending bond dollars to buy technology when there are so many brick and mortar and other critical facility needs that must be met."

This content is from Southern California Public Radio. View the original story at SCPR.org.

File photo: Lorne Street Elementary students had to grab books from a book bin after their library was closed during the recession.; Credit: Annie Gilbertson/KPCC

More than 200 Los Angeles Unified School District elementary school libraries have reopened in just two months, according to district officials.

Recession-era budget cuts had left many libraries without staffing. The cuts persisted even when the economy began to improve: a year ago half of the district's 650,000 students were still without a librarian or library aide.

Without library workers, state law prohibits students from browsing collections, pulling reference materials or checking out books. 

“We have been living without libraries and, no, we don’t want to because they are essential for academic achievement and learning for our students," said Mark Bobrosky, a librarian at Walter Reed Middle School.

School board member Monica Ratliff created a task force to recommend ways to expand libraries after KPCC reported that Lorne Street Elementary in Northridge had a library full of books collecting dust.

"This idea of equity — we are trying to make sure we don't have library deserts," Ratliff said at the board's curriculum, instruction and assessment committee meeting on Tuesday.

Even when the board committed funds for elementary school libraries, the district found it hard to fill openings. Library aides worked just three hours a day, five days a week.

Members of the task force suggested assigning library aides to two schools, doubling their hours and providing benefits.  Elementary school libraries began to quickly reopen. 

But while conditions have improved for elementary students, middle school libraries are still hard hit, with nearly 65 percent of their campus libraries shuttered.

Bobrosky said reopening the libraries is vital for L.A. Unified's success in implementing the Common Core state standards, which require research projects incorporating a variety of texts.

This content is from Southern California Public Radio. View the original story at SCPR.org.

File photo: LAUSD Superintendent Ramon Cortines faces a suit brought by a school district employee, who has sued him twice before.; Credit: David McNew/Getty Images

A Los Angeles Unified School District employee filed suit Wednesday accusing Superintendent Ramon Cortines of sexual harassment and retaliation, and alleging officials failed to intervene when told of the situation.

The lawsuit is the third one filed by Scot Graham, LAUSD's real estate director, who has made similar charges in previous complaints. The suit was filed in Los Angeles County Superior Court.

LAUSD General Counsel David Holmquist issued a statement Tuesday saying the courts have previously ruled on the case and the district is not aware of any new charges. "This is simply a frivolous refiling of the same allegations," he stated.

The latest suit alleges Cortines made sexual advances to Graham in 2000 soon after Cortines helped Graham get a job with the school district’s real estate leasing operations. Cortines left the school district that same year and Graham didn’t report what allegedly happened, according to the suit.

Graham claims that Cortines made additional sexual advances in 2010, the year the school board hired Cortines a second time to run the school district. The sexual advances were made at Cortines’ second home in Kern County, the suit alleges.

“Cortines’ advance shocked and disturbed Graham, who feared that declining Cortines’ request for sex would lead to unwarranted retaliatory consequences,” according to the lawsuit.

Graham said he notified his boss John Creer, and his boss’ boss James Sohn, but the school district conducted no investigation. Then in an October 2010 meeting, the suit claims General Counsel Holmquist “discouraged Graham from pursuing his claims, and suggested, in an intimidating and patronizing manner, that the incidents at the Ranch and Cortines’ unsolicited phone call were better left unreported.”

In May 2012, the district announced that it would pay $200,000 to Graham to settle his sexual harassment claims against Cortines, who by then had left the post. In the announcement, the district said Cortines denied sexually harassing Graham, but acknowledged they had a consensual relationship.

Graham later declined to sign off on the settlement. He filed one lawsuit in 2013 that was dismissed on a legal technicality and then a second one that was withdrawn in May 2014.

Five months later, the LAUSD school board rehired Cortines as an interim superintendent after the resignation of his predecessor, John Deasy. Cortines is expected to serve until a permanent replacement is chosen by the board later this year.

“What makes this different and new is the school board has rehired Ramon Cortines despite documented history of sexual harassment and sexual assault against Scot Graham,” said Rob Hennig, Graham’s lawyer.

By failing to investigate whether there was any merit to Graham’s allegations, the lawsuit argues, the school district failed in its duty to protect an employee from potential sexual harassment.

“Cortines shouldn’t have been rehired by the school board,” Hennig said.

In his statement, Holmquist said the district intends to "seek reimbursement for the taxpayers' dollars that are having to be expended in attorney's fees and costs" in dealing with Graham's allegations. The district said it spent about $240,000 defending itself against Graham's first two lawsuits.

Graham said in an interview Tuesday that he has been on leave since late last year because he’s developed a type of seizure disorder that prevents him from driving long distances.

He said he filed the latest lawsuit after the school board rehired Cortines and he was running into him in the workplace. Graham also said he felt his allegations were swept under the rug.

“No one came to talk to me…it was like being in a fraternity house,” he said.

The suit does not say how much in damages Graham is seeking, but it asks among other items for back pay, future pay, benefits, and compensation for medical treatment. It also seeks an investigation into Graham's accusations against the superintendent.

This content is from Southern California Public Radio. View the original story at SCPR.org.

Christopher R. Mahone
Apr 8, 2020; 133:jcs237057-jcs237057
CELL SCIENCE AT A GLANCE