66 research outputs found
Valence fluctuation in CeReSi and Ising-type magnetic ordering in PrReSi single crystals
Single crystals of and have been
grown by Czochralski method in a tetra-arc furnace. Powder x-ray diffraction
confirmed that these compounds crystallize in the -type
tetragonal crystal structure with space group (No. 128). The
anisotropic physical properties have been studied comprehensively by measuring
the magnetic susceptibility, isothermal magnetization, electrical transport and
specific heat. The low value of magnetic susceptibility together with no
magnetic transition down to ~K gives evidence that the Ce-ions are in the
intermediate valence state in . On the other hand revealed a magnetic ordering at ~K. The sharp drop in the
magnetic susceptibility and a spin flip like metamagnetic transition, for
in the magnetization plot of suggest
an Ising-type antiferromagnetic ordering. Based on magnetic susceptibility and
isothermal magnetization data, a detailed crystal electric field (CEF) analysis
shows that degenerate Hund's rule derived ground state of ion splits into nine singlets with an overall splitting of ~K.
The magnetic ordering in is due to the exchange-generated
admixture of the lowest lying CEF energy levels. Heat capacity data reveal a
sharp peak at ~K, that confirms the bulk nature of the magnetic ordering in
.Comment: 9 pages, 8 figure
Metastatic breast carcinoma mimicking a sebaceous gland neoplasm: a case report
<p>Abstract</p> <p>Introduction</p> <p>Breast cancer is common in women and its metastases involve the skin in approximately one quarter of patients. Accordingly, metastatic breast cancer shown to be cutaneous through histology must be distinguished from a wide variety of other neoplasms as well as the diverse morphologic variants of breast cancer itself.</p> <p>Case presentation</p> <p>We report the case of a 61-year-old Caucasian woman with cutaneous metastases of a bilateral ductal breast carcinoma that in histopathological examination mimicked an adnexal neoplasm with sebaceous differentiation.</p> <p>Conclusion</p> <p>Against the background of metastatic breast carcinoma, dermatopathological considerations of sebaceous differentiation of skin lesions are presented and discussed focusing on the rare differential diagnosis of sebaceous carcinoma of the breast.</p
Indocyanine green‐assisted sentinel lymph node biopsy in melanoma using the “FOVIS“ system
Targeted High-Resolution Ultrasound Is Not an Effective Substitute for Sentinel Lymph Node Biopsy in Patients With Primary Cutaneous Melanoma
Isolated Limb Infusion and Isolated Limb Perfusion for Melanoma: Can the Outcomes of these Procedures be Compared?
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