In orthorhombic CrRO3 (R=rare earth and Y), Cr spins are ordered in a G mode between TN 282°K for R=La, to 112°K for R=Lu. The rare-earth ordering is coupled to the Cr-spin ordering, with the exception of terbium. In the magnetoelectric compound Fe1.15Ga0.85O3, four sites are available for cations, one of these mainly occupied by Ga. Neutron-diffraction and magnetic-susceptibility measurements give evidence of a ferrimagnetic ordering. Tetragonal FeS shows no evidence for magnetic ordering by neutron diffraction and Mössbauer effect down to 1.7°K. The CrS-MnS solid solution has NaCl type. First kind of facecentered magnetic ordering is observed.

Weight loss is key to controlling the increasing prevalence of metabolic syndrome (MS) and its components, i.e., central obesity, hypertension, prediabetes and dyslipidaemia. The goals of our study were two-fold. First, we characterised the relationships between eating duration, unprocessed and processed food consumption and metabolic health. During 4 weeks of observation, 213 adults used a smartphone application to record food and drink consumption, which was annotated for food processing levels following the NOVA classification. Low consumption of unprocessed food and low physical activity showed significant associations with multiple MS components. Second, in a pragmatic randomised controlled trial, we compared the metabolic benefits of 12 h time-restricted eating (TRE) to standard dietary advice (SDA) in 54 adults with an eating duration > 14 h and at least one MS component. After 6 months, those randomised to TRE lost 1.6% of initial body weight (SD 2.9, p = 0.01), compared to the absence of weight loss with SDA (−1.1%, SD 3.5, p = 0.19). There was no significant difference in weight loss between TRE and SDA (between-group difference −0.88%, 95% confidence interval −3.1 to 1.3, p = 0.43). Our results show the potential of smartphone records to predict metabolic health and highlight that further research is needed to improve individual responses to TRE such as a shorter eating window or its actual clock time.

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2014 Dans DyCrO3 (groupe Pbnm 2014 D162h), les spins de Cr s'ordonnent à TN1 = 146 °K dans un mode Gz. Ceux de Dy s'ordonnent à TN2 = 2,16 °K dans une maille qu'il faut doubler selon a et b. On détermine les 8 représentations irréductibles du groupe Pbnm associées au vecteur d'onde k = $$[1/2 1/2 0]. Celles-ci sont toutes à une dimension et complexes. Grâce aux vecteurs de base Gx + iAx et Gy 2014 iAy qui décrivent la structure non colinéaire, on construit un hamiltonien effectif des spins. On trouve des relations entre ses coefficients grâce à la connaissance de la structure. Abstract. 2014 In DyCrO3 (group Pbnm 2014 D162h), the Cr-spins order at TN1 = 146 °K in a Gz-mode. Those of Dy order at TN2 = 2.16 °K in a unit cell which has to be doubled in the a and b direction. The irreducible representations of the group Pbnm associated with the wave vector k = [1/2 1/2 0] are determined. All the 8 irreducible representations are one-dimensional and complexe. With the help of the basis vectors Gx + iAx and Gy 2014 iAy which describe the non colinear structure, one constructs an effective spin hamiltonian. One finds relations between its coefficients by virtue of the known spin structure.