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GSMArena.com 03/30/2020 10:27
The Honor Play 9A was unveiled today, a budget-conscious entry to the company's lineup. It houses a large 5,000mAh battery - that's 1,000mAh more than the Honor 9X and Play 3 have - but is missing their 48MP camera. Night Black, Blue Emerald and Jasper Green. The 9A has a 6.3" LCD on the front with 720p+ resolution (20:9 aspect ratio), it covers 70% of the NTSC color space. Nestled in a teardrop notch on top is an 8MP selfie camera with 1080p video recording capabilities. Around the back is a 13MP main camera (f/1.8 aperture) that also shoots video in 1080p. Next to it is a...
Total Retail 03/30/2020 10:19
For many years, customer experience experts have stressed the importance of balancing the convenience of self-service and digital channels, with the loyalty-building power of human interaction. Stein Mart, a national specialty omnichannel off-price retailer offering designer and name-brand fashion apparel, home décor, accessories and shoes at everyday discount prices, aimed to harness the best of […]
We report tandem alkyl‐arylations and phosphonyl‐arylations of vinyl ureas by way of a photocatalytic radical‐polar crossover mechanism. Addition of photoredox‐generated radicals to the alkene forms a new C–C or C–P bond and generates a product radical adjacent to the urea function. Reductive termination of the photocatalytic cycle generates an anion that undergoes a polar Truce‐Smiles rearrangement, forming a C–C bond. The reaction is successful with a range of α‐fluorinated alkyl sodium sulfinate salts and diarylphosphine oxides as radical precursors, and the conformationally accelerated Truce‐Smiles rearrangement is not restricted by the electronic nature of the migrating aromatic ring. Formally the reaction constitutes an α,β‐difuctiona.
The C‐O bond cleavage for activation of alcohols is synthetically useful and practically challenging. This work describes carbazate as a new type of electrochemically activated alkylating agent derived from ubiquitous alcohols for direct functionalization of heteroarenes under mild electrolytic conditions. The simple undivided cell at low oxidative potentials with carbon/platinum electrode set‐ups offers excellent substrate tolerance, affording a variety of primary, secondary and tertiary alkyl‐decorated heterocycles in good chemical yields. Furthermore, the mechanism for this electrochemical deoxyalkylation reaction has been investigated.
Recent advances in scanning probe microscopy on surface enable not only direct observation of molecular structures but also local probe reactions, in which unstable short‐lived products have been synthesized and analyzed. Here, we demonstrate an endergonic reaction to synthesize a single Sondheimer‐Wong diyne from 6,13‐dibromopentaleno[1,2‐ b :4,5‐ b’ ]dinaphthalene by local probe chemistry on a ultra‐thin film of NaCl formed on a Cu(111) surface at 4.3 K. The structures of the precursor and two intermediates, as well as the final product, were directly identified by the differential conductance imaging with a CO functionalized tip. Our density functional theory calculations revealed that the multiple steps reaction, being endergonic overal.
The hydroxide‐exchange membrane fuel cell (HEMFC) is a promising energy conversion device. However, the development of HEMFC is hampered by the lack of platinum‐group‐metal‐free (PGM‐free) electrocatalysts for the hydrogen oxidation reaction (HOR). Here we report a Ni catalyst that exhibits the highest mass activity in HOR for a PGM‐free catalyst as well as excellent activity in the hydrogen evolution reaction (HER). This catalyst, Ni‐H 2 ‐2%, was optimized through pyrolysis of a Ni‐containing metal‐organic framework precursor under a mixed N 2 /H 2 atmosphere, which yielded carbon‐supported Ni nanoparticles with different levels of strains. The Ni‐H 2 ‐2% catalyst has an optimal level of strain, which leads to an optimal hydrogen binding e.
Through quantum‐chemical calculations, we investigate a family of metal−organic frameworks (MOFs) containing triazolate linkers, M 2 X 2 (BBTA) (M = metal, X = bridging anion, H 2 BBTA = 1 H ,5 H ‐benzo(1,2‐d:4,5‐d′)bistriazole), for their ability to form terminal metal‐oxo sites and subsequently activate the C−H bond of methane.
The aggregation of molecular metal oxides into larger superstructures can bridge the gap between molecular compounds and solid‐state materials. Here, we report that functionalization of polyoxotungstates with organo‐boron substituents leads to giant polyoxometalate‐based nanocapsules with dimensions of up to 4 nm. A “lock and key” mechanism enables the site‐specific anchoring of aromatic organo‐boronic acids to metal‐functionalized Dawson anions [M3P2W15O62]9‐ (M = TaV or NbV), resulting in unique nanocapsules containing up to twelve POM units. Experimental and theoretical studies provide initial insights into the role of the organo‐boron moieties and the metal‐functionalized POMs for the assembly of the giant aggregates. The study therefor.
Risk Managers Blog 03/30/2020 10:18
By Molly Mulebriar Brokers should be cautious yet most don’t seem to be as evidenced by the prolific offer and acceptance of “free” Cafeteria Plan administration services, especially among Texas public school districts. In some instances the servicing of risk may be construed as unrelated to the insurance product procured through a broker and may […]

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