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Hematopoietic stem cells from peripheral blood the perspective of non-mobilized peripheral blood

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EPR and Magnetic Susceptibility Investigation of Fe Ions in B_2O_3-SrF_2 Glass Matrix

Health（健康） 2010年第6期

作者： Vassilios Katsares Zissis Paparidis Eleni Nikolaidou Anastasia Petsa Iliana Karvounidou karina-alina ardelean Nikolaos Peroulis Nikolaos Grigoriadis John Grigoriadis

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Journal of Materials Science & Technology 2002年第3期18卷 231-233页

作者： I.ardelean G.Salvan 等 FacultyofPhysics Babes-BolyaiUniversity3400Cluj-NapocaRomania InstitutforPhysics TechnicalUniversityChemnitzGermany

The structural and magnetic properties of an oxide-fluoride mixed vitreous matrix 2B2O3-SrF2, were explored by using Fe impurities as probes. Information about the structural units involving iron ions, their valence state, the strengths and type of interactions involving them was obtained using EPR spectroscopy and magnetic susceptibility measurements.

关键词： Boron oxide Iron oxide Sr fluoride Glass EPR Magnetic susceptibility

EPR and Magnetic Susceptibility Studies of Cr^(3+) Ions in the 70TeO_2·25B_2O_3·5PbO Glass Matrix

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Journal of Materials Science & Technology 1997年第5期13卷 374-378页

作者： Peteanu M. Simon V. Muresan N. ardelean I. Filip S. Faculty of Physics Babes-Bolyai University 3400 Cluj-Napoca Romania Dept. of Physics University of Oradea 3700 Oradea Romania

By using EPR and magnetic susceptibility measurements, the Cr ion distribution in the xCr2O3.(1-x)[70TeO2·25B2O3·5PbO] glasses with 0＜x≤20 mol% was studied. EPR investigation evidencedthe presence of Cr3+ ions in agreement with the experimentally obtained atomic magnetic moment values. For concentrations x≤3 mol%, the isolated Cr3+ ions coexist with those coupledby dipole-dipole interactions. For x＞3 mol%, the Cr3+ ions participate in superexchange interactions and are predominantly antiferromagnetically coupled.

关键词： PbO Ions in the 70TeO2 Glass Matrix EPR and Magnetic Susceptibility Studies of Cr Cr

EPR of Irradiation Induced Centers in Some VitreousMatrices Containing Copper

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Journal of Materials Science & Technology 1995年第4期11卷 299-303页

作者： M.Peteanu L.Cociu and I.ardelean (Faculty of Physics, Babes-Bolyai University, 3400 Cluj-Napoca, Romania) Babes-Bolyai Univ Cluj-Napoca Romania

Boro-germanate glasses containing copper, i.e., xCuO(1-x)[GeO2·B2O3] subjected to gamma irradiation, were studied by means of EPR. Comparisons were made with the xCuO·(1-x)[Na2B4O7] system. Irradiation induced centers were detected. These are: electron trapped at a hydrogen compensated germanium ion centers; boron oxygen hole centers and electron trapped at an oxygen vacancy centers. Strong dependence of the paramagnetic irradiation-induced centers concentration on the CuO content of the sample was evidenced.

关键词： EPR of Irradiation Induced Centers in Some VitreousMatrices Containing Copper

EPR and Magnetic Susceptibility Investigations of Fe Containing TeO_2-B_2O_3-SrF_2 Glasses

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Journal of Materials Science & Technology 2000年第6期16卷 596-600页

作者： I.ardelean, M.Peteanut, V.Simon and F.Ciorcas (Faculty of Physics, Babes-Bolyai University, 3400 Cluj-Napoca, Romania) [Manuscript received November 23, 1999, in revised form June 20, 2000] Faculty of Phys. Babes-Bolyai Univ. Cluj-Napoa Romania

Iron ions were used as probes to explore the structural and magnetic properties of 70TeO2'25B2O3' 5SrF2 vitreous matrix. The distribution of Fe3+ ions on different structural aggregates was revealed by means of EPR, as depending on Fe2O3 concentration. Strongly distorted octahedral sites were detected for the isolated paramagnetic ions, and also clusters of Fe ions especially at high Fe2O3 content of samples. Magnetic susceptibility measurements evidenced both dipoledipole and superexchange type interactions involving iron ions. Mixed valence states of iron ions were also detected

关键词： Te In Fe EPR and Magnetic Susceptibility Investigations of Fe Containing TeO2-B2O3-SrF2 Glasses line

EPR Study of Borax-glasses with Addition of Fe^(3+) Ions

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Journal of Materials Science & Technology 1994年第2期10卷 97-106页

作者： M.Peteanu L. Cociu and I. ardelean (Dept. of Physics, University of Cluj-Napoca, Str. M.Kogalniceanu No. 1, 3400 Cluj-Napoca, Romania)(To whom correspondence should be addressed) Univ of Cluj-Napoca Cluj-Napoca Romania

Glasses of xFe2O3 (l-x) Na2B4O7 for 0.3≤x≤5 mol% have been studied by means of EPR. The distribution of Fe3+ ions in the vitreous network. as isolated and connected in clusters. depends on the impurity contents in the glass. A thermal treatment inducing the Fe3+ -rich phase separation ends at the sample crystallization, when performed at about 550℃, Weathering of glasses causes a Superficial alteration of their optical properties. It enters the bulk of the glass for powdered samples. As a result of gamma irradiation pararnagnetic hole centers were detected:the BOHC. the peroxy radical and the iron hole centers

关键词： Fe Ions EPR Study of Borax-glasses with Addition of Fe

Structural and Magnetic Properties of MnO-P_2O_5-PbO Glasses

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Journal of Materials Science & Technology 1999年第5期15卷 453-456页

作者： I.ardelean M.Peteanu O.Cozar V.Simon V.Mih and G.Botezan (Faculty of Physics, Babes-Bolyai University, 3400 Cluj-Napoca, Romania To whom correspondence should be addressedE-mail: arde@phys.ubbcluj.ro ) Univ Babes Bolyai Fac Phys Cluj Napoca 3400 Romania

The xMnO(100-x)[***] glasses were prepared with MnO concentration being in the range of 0≤x≤50 mole fraction and were investigated by EPR spectroscopy and magneticsusceptibility measurements. Octahedral symmetric sites tetragonally distorted were detected for x≤5 mole fraction MnO. Only Mn2+ ions were identified in these glasses, involved in dipoledipole interactions

关键词： PbO MnO Structural and Magnetic Properties of MnO-P2O5-PbO Glasses

Primary Small Bowel Melanoma or Small Bowel Metastasis with Vanishing Primary Cutaneous Lesion

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Case Reports in Clinical Medicine 2022年第3期11卷 63-71页

作者： Dana Criṣan Andreea ardelean Mihaela Coman Laurenţiu Stoicescu Ioana Rusu Nadim Al Hajjar Tudor Pop Sorin Criṣ an Constantin Bodolea Lucreţ ia Avram Faculty of Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj-Napoca Romania Clinical Municipal Hospital Cluj-Napoca Romania 3rd Medical Clinic “Octavian Fodor” Regional Institute of Gastroenterology and Hepatology Cluj Cluj-Napoca Romania

The small bowel represents one of the main sites for cutaneous melanoma metastasis;however, numerous cases of primary intestinal melanoma have recently been described. In view of this, we present the case of a 39-year-old woman admitted for nausea, heartburn, abdominal pain, change in bowel habits and weight loss. Contrast-enhanced CT revealed a small bowel mass. Surgical resection of a 6 cm ileal tumour with regional mesenteric lymphadenectomy and end-to-end anastomosis was performed. Histopathological findings indicated the presence of an ileal melanoma metastasis. Subsequent dermatological examination identified a cutaneous lesion on the right forearm, however no malignant cells were found at the histopathological exam. Whole body PET CT with FDG identified multiple frontal and parietal lesions. Genetic testing was positive for BRAF gene V600 E mutation. The patient underwent multiple neurosurgical procedures for the resection of cerebral metastases. Palliative external radiation and chemotherapy was also attempted. After approximately 2 years after the diagnosis, the patient died following multiple episodes of intracranial hypertension.

关键词： Melanoma Small Bowel Cerebral Metastasis

The influence of antropic pollution on aquatic ecosystems in the main hydrographic pools from the western part of Romania

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The influence of antropic pollution on aquatic ecosystems in...