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1
Different Anatomical Distribution of Basal Cell Carcinoma Subtypes in Iranian Population: Association between Site and Subtype

( Alireza Ghanadan ),( Pejman Abdollahi ),( Mehrshad Rabet ),( Zahra Naraghi ),( Mohammad Amin Abbasi ),( Homayun Moslehi ),( Ata Abbasi ) 대한피부과학회 2014 Annals of Dermatology Vol.26 No.5
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Background: Basal cell carcinoma (BCC) is the most common type of human cancer. Despite the high prevalence of these tumors, there is a lack of reliable epidemiological data in some regions including Iran. Objective: To assess the relationship between BCC subtypes and anatomical distribution in the Iranian population. Methods: There were 876 patients with a single BCC enrolled in this study (March 2007 to March 2010; Razi Dermatology Center, Tehran, Iran). Results: Among 876 patients, 544 were males and 332 females. Of the lesions, 43% were nodular, 32.4% mixed type, 3% superficial and rest of other subtypes. In the lesion location, 58.2% were on the face, 29.2% on scalp, 6.2% on ears, 2.3% on neck, 1.7% on trunk and 1.3% on the extremities. There was no significant difference between male and female in the BCC subtypes, but anatomical distribution of the tumor was different (p=0.002). Most of the trunk- arising BCCs were superficial, and most of the facial BCCs were nodular subtype. Also, most of the BCC subtypes occurred in patients between 40 to 80 years old and mostly on the face and scalp (p=0.04). However, superficial BCCs mostly occurred in younger patients over others (p=0.001). Conclusion: Subtype is associated with a site, independent of gender or age. Also BCCs occurring on the trunk are mostly of the superficial subtype. (Ann Dermatol 26(5) 559∼563, 2014)
2
In Situ Formed Ir3Li Nanoparticles as Active Cathode Material in Li-Oxygen Batteries

Halder, Avik,Ngo, Anh T.,Luo, Xiangyi,Wang, Hsien-Hau,Wen, J. G.,Abbasi, Pedram,Asadi, Mohammad,Zhang, Chengji,Miller, Dean,Zhang, Dongzhou,Lu, Jun,Redfern, Paul C.,Lau, Kah Chun,Amine, Rachid,Assary, American Chemical Society [etc.] 2019 The Journal of physical chemistry A Vol. No.
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Lithium-oxygen (Li-O2) batteries are a promising class of rechargeable Li batteries with a potentially very high achievable energy density. One of the major challenges for Li-O2 batteries is the high charge overpotential, which results in a low energy efficiency. In this work size-selected subnanometer Ir clusters are used to investigate cathode materials that can help control lithium superoxide formation during discharge, which has good electronic conductivity needed for low charge potentials. It is found that Ir particles can lead to lithium superoxide formation as the discharge product with Ir particle sizes of ∼1.5 nm giving the lowest charge potentials. During discharge these 1.5 nm Ir nanoparticles surprisingly evolve to larger ones while incorporating Li to form core-shell structures with Ir3Li shells, which probably act as templates for growth of lithium superoxide during discharge. Various characterization techniques including DEMS, Raman, titration, and HRTEM are used to characterize the LiO2 discharge product and the evolution of the Ir nanoparticles. Density functional calculations are used to provide insight into the mechanism for formation of the core-shell Ir3Li particles. The in situ formed Ir3Li core-shell nanoparticles discovered here provide a new direction for active cathode materials that can reduce charge overpotentials in Li-O2 batteries. [FIG OMISSION]