Search

A conversion‐chemistry‐based zinc–selenium aqueous battery is reported that delivers high specific capacity, good rate capability, and excellent cycle life. In this work, an electronically conjugated covalent triazine framework is used to physicochemically lock selenium (Se8) clusters. As a control sample, the traditional melt‐diffusion approach is used to physically lock Se8. While the melt‐diffused selenium cathode exhibited a precipitous drop in capacity with cycling, the physicochemically locked selenium cathode can be cycled in a stable manner and delivered a specific capacity of ≈600 mAh g−1 with a capacity retention of ≈70% after 1000 continuous charge/discharge steps. Ab initio density functional theory calculations and various structural and morphological characterizations indicate that the superiority of the physicochemically locked selenium cathode stems from its ability to suppress the polyselenide shuttle phenomenon and thus prevent loss of active material during cycling. This work opens the door toward the development of conversion chemistries for high performing, non‐flammable, and low‐cost zinc‐based rechargeable batteries. [ABSTRACT FROM AUTHOR]

By using a compression technique and a pelletizer, a Tellurium (Te) doped Bismuth Antimony (BiSb) sample in the form of pellet has been formed. Stoichiometric proportions of the materials (Bi, Sb, and Te) were calculated for the manufacture of pellets Bi2Sb(3-x):Tex (X = 0.1, 0.2, and 0.3). A precision LCR meter was used to measure the dielectric characteristics of Bi2Sb(3-x):Tex (X = 0.1, 0.2 and 0.3) pellets (BULK) in the frequency range of 20 Hz to 2 MHz at room temperature. Using Primary collected data, Dielectric loss, Dielectric constant, AC conductivity, and Real & Imaginary Electric modulus have been studied. All of these characteristics have been used to look at various ways that dielectric spectroscopy works. [ABSTRACT FROM AUTHOR]

The V–VI group of semiconductor materials have a narrow bandgap which is widely used for fabrication of optoelectronic devices. Bi2Sb2.9Te0.1 pellet (Bulk) was prepared using a compression method. Here, the structural property, optical property and surface topology of the material have been studied and the results and conclusion of these properties were discussed and reported in this article. [ABSTRACT FROM AUTHOR]

COVID-19 has transformed healthcare service provision. In addition to the spread of a virus, there has been an equally concerning emergence and spread of conspiracy theories. Such theories can threaten societal cohesion and adherence to the necessary public health guidance. In a forensic in-patient setting, such difficulties can be amplified. In this paper, we outline the key theory in relation to the development and spread of conspiracy theory memes. We propose primary, secondary and tertiary level responses to tackle the possible generation and spread of harmful conspiracies in the forensic in-patient setting. We consider this to be important, as there is a risk that such beliefs could affect patients' mental health and, in extremis, undermine physical health efforts to reduce the spread of COVID-19. [ABSTRACT FROM AUTHOR]

Lead‐free hybrid and inorganic perovskites (A2CuBr4; A=CH3NH3 or Cs, 2 D or3 D) are synthesized by a room‐temperature solid‐state reaction route and examined as anode materials in Li‐ion batteries. A remarkably high reversible capacity of 630 mAh g−1 is realized in the 2 D hybrid perovskite at 100 mA g−1 at the end of 140 cycles. A full cell with this anode is also tested and shows impressive cycling stability. A good reversible capacity of 420 mAh g−1 with excellent stability tested up to 1400 cycles is also obtained for the 3 D perovskites. Pb‐free hybrid/inorganic halide perovskites can thus be used as viable anode materials for battery applications. [ABSTRACT FROM AUTHOR]

Background: Cardiovascular disease is a major cause of mortality in patients with schizophrenia, and weight gain due to second generation antipsychotics contributes significantly to this. Lurasidone is a new antipsychotic with minimal metabolic side effects and represents a new treatment option where weight is a concern. Design: Description of four cases of patients switched to Lurasidone from other antipsychotics and their experience in terms of psychotic symptoms and weight changes. Results: Our findings suggest that Lurasidone offers the potential to reduce weight gain and even allow for potential weight loss in patients switched from another antipsychotic medication. Conclusions: Lurasidone may offer the potential for weight loss when patients are switched from other antipsychotic medication. Further randomised studies are needed to confirm this beneficial effect of Lurasidone. [ABSTRACT FROM AUTHOR]