Discover the unique traits of each zodiac element—fire, earth, air, and water. Uncover how these elements shape personalities and compatibility in astrology.

A recently discovered β polymorph of 1,3-diacetylpyrene has turned out to be a prominent negative thermal expansion material. Its unique properties can be linked to anharmonic oscillations in the crystal structure. The onset and development of anharmonic behavior have been successfully tracked over a wide temperature range by single-crystal X-ray diffraction experiments. Sufficient diffraction data quality combined with modern quantum crystallography tools allowed a thorough analysis of the elusive anharmonic effects for a moderate-scattering purely organic compound.

The title cobalt(II) complex, [Co(C2H3N)3(C9H21N3)](C24H20B)2 or [(tacn)Co(NCMe)3][BPh4]2, has been characterized by single-crystal X-ray diffraction. It incorporates the well-known macrocyclic tacn (1,4,7-trimethyl-1,4,7-tri­aza­cyclo­nona­ne) ligand, which is coordinated facially to the metal center. The complex crystallizes in space group P21/c with Z = 4. The divalent cobalt ion exhibits a six-coordinate octa­hedral geometry by one tacn and three aceto­nitrile ligands. Two non-coordinating tetra­phenyl­borate (BPh4−) anions are also present.

A new polymorph of 1,3-diacetylpyrene has been obtained from its melt and thoroughly characterized using single-crystal X-ray diffraction, steady-state UV–Vis spectroscopy and periodic density functional theory calculations. Experimental studies covered the temperature range from 90 to 390 K and the pressure range from atmospheric to 4.08 GPa. Optimal sample placement in a diamond anvil cell according to our previously presented methodology ensured over 80% data coverage up to 0.8 Å for a monoclinic sample. Unrestrained Hirshfeld atom refinement of the high-pressure crystal structures was successful and anharmonic behavior of carbonyl oxygen atoms was observed. Unlike the previously characterized polymorph, the structure of 2°AP-β is based on infinite π-stacks of antiparallel 2°AP molecules. 2°AP-β displays piezochromism and piezofluorochromism which are directly related to the variation in interplanar distances within the π-stacking. The importance of weak intermolecular interactions is reflected in the substantial negative thermal expansion coefficient of −55.8 (57) MK−1 in the direction of C—H⋯O interactions.

Title compound 1Ni, [Ni(C46H32N4O2)], a secochlorin nickel complex, was prepared by diol cleavage of a precursor trans-di­hydroxy­dimethyl­chlorin. Two crystallographically independent mol­ecules in the structure are related by pseudo-A lattice centering, with mol­ecules differing mainly by a rotation of one of the acetyls and an adjacent phenyl groups. The two mol­ecules have virtually identical conformations characterized by noticeable in-plane deformation in the A1g mode and a prominent out-of-plane deformation in the B1u (ruffling) mode. Directional inter­actions between mol­ecules are scarce, limited to just a few C—H⋯O contacts, and inter­molecular inter­actions are mostly dispersive in nature.

Cardiac arrest strikes almost 600,000 people each year, killing the vast majority of those individuals, says a new report from the Institute of Medicine. Every year in the U.S., approximately 395,000 cases of cardiac arrest occur outside of a hospital setting, in which less than 6 percent survive.

Included in Interplay’s career development platform, SAM provides technicians with immediate guidance to help them gain skills faster and learn more efficiently in a more engaging manner. S

An accomplished physician, scholar and educator, Saroja Bharati has secured a distinguished reputation in the healthcare industry

Dr. John Tejeda lends years of expertise to his work with Perspective Health Partners

Antonio S. Giacomini Jr. provides legal and compliance services for the U.S. and Latin America at Siemens Energy

MediaCastpro is the new B2B marketplace to buy and sell stock, news and documentary footage on any topic and of any length.

Innovating Non-lethal De-escalation, Booth 1031, Oct. 19-22

Healthcare workload has emerged as an important metric associated with poor outcomes. To measure workload, studies have used bed occupancy as a surrogate. However, few studies have examined frontline clinician workload and outcomes.

WASHINGTON, D.C., March 20, 2024 — The U.S. House of Representatives’ Energy and Commerce Committee today is considering the Cardiomyopathy Health Education, Awareness, Research and Training in Schools (HEARTS) Act, which would help ensure students ...

WASHINGTON, D.C., September 23, 2024 — The U.S. House of Representatives today passed the Cardiomyopathy Health Education, Awareness, Research and Training in Schools (HEARTS) Act, which would help ensure students, staff and school visitors are prepared...

DALLAS, January 3, 2023 —While playing in the Buffalo Bills - Cincinnati Bengals game on Monday Night Football on January 2, Bills player Damar Hamlin suffered a cardiac arrest after a hit and was administered CPR on the field before being transferred to...

This news release contains updated information and data not included in the abstract. Research Highlights: U.S. survival rates from out-of-hospital cardiac arrests fell significantly at the beginning of the COVID-19 pandemic in 2020 and only slightly ...

This news release contains updated information and data not included in the abstract. Research Highlights: The sooner a lay rescuer (bystander) starts cardiopulmonary resuscitation (CPR) on a person having a cardiac arrest at home or in public, up to ...

Updated Guideline Highlights: The American Heart Association and the American Academy of Pediatrics update recommendations for untrained lay rescuers and trained rescuers resuscitating adults and children who have drowned. One important update is the ...

TORONTO, ON – The University of Toronto today announced the appointment of Professor Edward Iacobucci as dean of the Faculty of Law at the University of Toronto for a five-year term, beginning January 1, 2015, and ending December 31, 2019. “The Faculty of Law at the University of Toronto is a great Canadian institution, and […]

The 12th in our series is on the Branches of the Internal Iliac Artery.
See our website for accompanying diagrams

Cardiac profile from the medical history summary of President George W. Bush, August 7, 2007.

Qatar, que hace de mediador junto EEUU y Egipto, dice que su mediación está estancada pero la reanudará si las partes muestran seriedad y voluntad en la tregua Leer

Entrevista a Steve Bannon, ex estratega presidencial de Trump: "Con Donald, la Maga es fuerte: nos encargaremos de la seguridad nacional y la política exterior" Leer

Radio Liechtenstein acapara más del 70% de la financiación del estado para los medios, lo que le da una ventaja injustificada Leer

Exigen la aprobación del plan de Financiación de las universidades. «La infrafinanciación de la UJI supone una infrafinanciación para la provincia de Castellón», señalan Leer

La empresa castellonense EnerHi trabaja en una modificación del mayor parque solar de la provincia, adaptado a «la realidad del terreno» y en acortar de 42 a 5 km la red de evacuación Leer

"Por la dignidad, la igualdad y el futuro de las personas con discapacidad intelectual y sus familias, no nos callaremos", han asegurado los responsables durante la lectura del manifiesto Leer

Fournier (19 puntos) y Vezenkov (18) comandan el incontestable triunfo ante el equpo de Peñarroya (95-74). Leer

Music Pearls of Beth-Nahrin: An Assyrian / Syriac Discography

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Toronto based researcher works to preserve ancient Syriac inscriptions

Assyrians, Syrians and Syriacs

Syriacs react to minister’s wording regarding Mor Gabriel Monastery

ARI SHAPIRO, HOST: A bipartisan delegation of Congresspeople is just back from Ukraine. It was a trip designed to strengthen the U.S.-Ukraine alliance, and it was planned before news broke of the whistleblower complaint against President Trump involving that same country. Congressman John Garamendi led the delegation as a senior member of the House Armed Services Committee. And the Democrat from California joins us now. Welcome, Congressman. JOHN GARAMENDI: Good to be with you. SHAPIRO: One central question in the impeachment inquiry is whether President Trump demanded help investigating a political rival in exchange for U.S. aid to Ukraine. And I know that aid was a central topic on your trip, so what did you learn about Ukraine's reliance on American assistance? GARAMENDI: Well, first of all, Ukraine is an extraordinary country. These citizens of that country are determined to be independent. They have been fighting a war against Russia for the last five years. They've lost 13- to 14

Seis expertos en negociación apuntaron que es necesario reconocer las necesidades del otro, así como identificar los liderazgos para avanzar en la negociación.

Académicos y funcionarios del Gobiernos plantearon que los cinco años son un punto definitivo para establecer el rumbo de la paz; para muchos el panorama es positivo, aunque con retos por delante.

Seis expertos en negociación apuntaron que es necesario reconocer las necesidades del otro, así como identificar los liderazgos para avanzar en la negociación.

Panelistas ven positivo el regreso de la negociación; creen que retomar agenda del 2016 funcionará, pero advierten sobre estrategia en seguridad.

Panelistas resaltaron que el reciente acuerdo permite establecer una ruta para que se dé un cambio político en Venezuela; creen que la confianza es uno de los grandes desafíos.

Panelistas plantearon que acuerdos humanitarios pueden ser un piloto para futuros ceses al fuego. Plantearon que sigue faltando claridad sobre participación ciudadana en la negociación.

Panelistas consideran que las negociaciones se deben mantener, pero que se deben afinar estrategias de seguridad y mecanismos de vigilancia a los ceses.

Panelistas consideran importante que el gobierno reconozca que puede lograr una paz parcial

Panelistas consideran que el proceso deja por fuera elementos como informalidad, las diferencias de costo de vida entre ciudades y que se debe abrir la discusión al pago por horas.

Panelistas consideran que la negociación ha conseguido logros que trae grandes desafíos como el monitoreo al cese y la materialización del Fondo.

Algunos panelistas consideran que la negociación se debe suspender y activar la confrontación armada. Otros creen que se debería continuar con los diálogos bajo algunas modificaciones.

Panelistas analizaron el anuncio del ELN de retomar la práctica del secuestro. Creen que hay una triple crisis que afectará el avance de la mesa de negociación.

Panelistas analizaron el impacto de la ola de violencia en Cauca y Nariño en los diálogos con el EMC. También debatieron sobre el modelo de participación de la sociedad civil en los diálogos con el ELN.