Tailoring Cationic Cobalt Vacancies in Molybdenum-Cobalt Selenide Derived from POM@ZIF-67 for Enhanced Electrocatalysis in Lithium-Oxygen Batteries.

Slow reaction kinetics during redox reactions limits the utilization of the high theoretical energy density of lithium-oxygen batteries (LOBs). Vacancy engineering, a potential strategy for modulating active sites, is critical in the development of high performance catalysts. This study investigates cobalt vacancies in Mo-CoSe nanoparticles created by selenization of phosphomolybdic acid (POM) embedded into zeolitic imidazolate framework-67 (ZIF-67).

Use of Upadacitinib in Refractory Esophageal Lichen Planus: Endoscopic Improvement in "Planus" Sight.

Although rarely reported, esophageal lichen planus is a chronic inflammatory disease that can lead to debilitating symptoms. It is reported to affect adult women in the fourth and fifth decades of life. Treatment ranges from medical therapy to endoscopic dilation.

A 3D-printed freestanding graphene aerogel composite photocathode for high-capacity and long-life photo-assisted Li-O batteries.

The construction of a high-performance photocathode is essential for improving Li-O battery performance and solar energy utilization. However, the single pore and few active reaction sites of the photocathode result in insufficient discharge capacity and unsatisfactory cycling durability. Herein, we designed and fabricated a self-standing 3D-printed multi-pore graphene-based photocathode direct ink writing (DIW) featuring non-competitive three-phase transmission channels to promote the transport of Li, e, and O.

COVID-19 & differential effects in twins: Insights from Placenta Pathology.

Introduction: COVID-19 has been associated with several adverse pregnancy outcomes, including perinatal loss. Differential effects of COVID-19 in a twin pregnancy may provide unique insights into virus-placental interactions. We present a case of perinatal loss of a female fetus with survival of the male co-twin in a pregnancy complicated by COVID-19 and premature delivery.

Intrathyroidal Parathyroid Cyst in a Middle-aged Woman.

Parathyroid cyst is a rare entity that can closely mimic thyroid and brachial cleft cysts, particularly when located within the thyroid gland. Most commonly, the cysts are non-functional but can produce compressive symptoms. The cyst contains watery content with elevated PTH levels, specifying parathyroid origin.

Mass transfer analysis of boron-doped carbon nanotube cathodes for dual-electrolyte lithium-air batteries.

Dual-electrolyte Li-air batteries (LABs) have the advantages of high specific energy density and low overpotential, but the mass transfer mechanism is still unclear. Mass transfer is essential to battery performance. To improve the mass transfer capability of the positive electrode, this research studied the effect of boron (B)-doped carbon nanotubes (BCNTs) with different amounts of defects as positive electrodes.

Simulation of crop growth, time to maturity and yield by an improved sigmoidal model.

Models that accurately estimate maximum crop biomass to obtain a reliable forecast of yield are useful in crop improvement programs and aiding establishment of government policies, including those addressing issues of food security. Here, we present a new sigmoidal growth model (NSG) and compare its performance with the beta sigmoidal growth model (BSG) for capturing the growth trajectories of eight crop species. Results indicated that both the NSG and the BSG fitted all the growth datasets well (R > 0.

Characterization of dendritic cells generated in vivo by an E. coli derived chimeric dual receptor agonist.

Background: Progenipoietin-4 (ProGP-4) is an E. coli derived chimeric growth factor that activates the human Flt3 and G-CSF receptors. ProGP-4 possesses cross-species activity and treatment of mice with ProGP-4 results in increases in the number of WBC and Class II+/CD11c+ cells in both spleen and peripheral blood.