Oxide versus Nonoxide Cathode Materials for Aqueous Zn Batteries: An Insight into the Charge Storage Mechanism and Consequences Thereof.

Aqueous Zn-ion batteries, which are being proposed as large-scale energy storage solutions because of their unparalleled safety and cost advantage, are composed of a positive host (cathode) material, a metallic zinc anode, and a mildly acidic aqueous electrolyte (pH ≈ 3-7). Typically, the charge storage mechanism is believed to be reversible Zn (de)intercalation in the cathode host, with the exception of α-MnO, for which multiple vastly different and contradicting mechanisms have been proposed. However, our present study, combining electrochemical, operando X-ray diffraction, electron microscopy in conjunction with energy-dispersive X-ray spectroscopy, and in situ pH evolution analyses on two oxide hosts-tunneled α-MnO and layered VO·HO vis-à-vis two nonoxide hosts-layered VS and tunneled Zn[Fe(CN)], suggests that oxides and nonoxides follow two dissimilar charge storage mechanisms.

Epithelial skin cancers after kidney transplantation: a retrospective single-centre study of 376 recipients.

Post-transplant non-melanoma skin cancers (NMSC) are the most common malignancies in kidney transplant recipients. To analyse risk factors associated with the occurrence of basal cell carcinomas (BBC) and squamous cell carcinomas (SCC) in kidney transplant recipients. Statistical analysis was performed on 376 kidney transplant recipients screened for NMSC in 2002-2009 and followed until 2013.

Prognostic markers in lentigo maligna patients treated with imiquimod cream: A long-term follow-up study.

Background: More data are needed to define factors that predict long-term success after imiquimod therapy for lentigo maligna (LM).

Objective: We sought to determine the demographic, clinical, and histologic prognostic markers of relapse-free survival in patients with LM who were treated with imiquimod.

Methods: This was a single-arm, open-label, nonrandomized, prospective study.

Localized Epidermal Cysts as a Radiation Recall Phenomenon in a Melanoma Patient Treated with Radiotherapy and the BRAF Inhibitor Vemurafenib.

BRAF inhibitors are broadly used for metastatic melanoma with BRAF mutations. Their use results in various cutaneous side effects, such as the development of keratoacanthomas and squamous cell carcinomas. We report a patient with metastatic melanoma treated with vemurafenib who developed dozens of histologically confirmed epidermal cysts within 2 months after initiation of vemurafenib administration.