Editorial

n Nuclear Development and the Changing Geopolitics

M. Constantin

1

n     Assessment of the Accidental Criticality for CANDU Fuel Bundles containing U-based Fuels

C.A. Mărgeanu, R. Joiţescu, S.C. Valeca

3

M.H. Nassef, D.S. Al-Othmany

13

n Conceptual Design of an Innovative Molten Metal Micro Modular Reactor (4M)

B. Aliyari, M. Raghoshay, O. Noori-Kalkhoran

21

n Nuclear Safety Aspects associated to Increasing of U²³⁵ Enrichment for 37-Elements CANDU Fuel Bundles with SEU and RU Fuels 

G.R. Bezdedeanu, C.A. Mărgeanu

29

n Study to Assess the Ductile Fracture in Zr-2.5%Nb by J-Integral with the Finite Element Method   using the Gurson-Tvergaard-Needleman Model  

V. Radu, L. Stoica, D. Toma, V. Olaru

36

n Influence of Thermal Aging on Different Concrete Classes used in Nuclear Constructions

I. Sturzeanu

41

n Strontium Separation by Chromatographic Extraction Process for ⁹⁰Sr Assessment

M. Dianu, M. Ilina

45

n Plasma Electrolytic Oxidation of Titanium and its Surface Chemistry Investigation

O.A. Rusu, V.C. Ion 

50

n Optimization of Gross Alpha and Beta Determination using a Low Background Gas-Flow Proportional Counter

V. Neculae, R. Dobrin, C. Dulama

55

n Fatigue Behaviour of Zy-4 Cladding under Cyclic Loads using Finite Element Modelling

E. Matei, A.C. Răduţ, D.F. Oproiu, D.V. Ionescu, I. Neacşu

59

Editorial policy and practices

67

Instructions for authors

70