Publications by authors named "Walter O"

Article Synopsis
  • Public space initiatives (PSIs) in African cities can improve health and social well-being, but there's a lack of research on their effectiveness and implementation across the continent.
  • This study synthesizes existing literature to assess the characteristics, locations, and outcomes of PSIs, finding that sports initiatives are predominant and that most research comes from South Africa.
  • Key challenges for PSIs include limited funding, historical marginalization, and competing land uses, highlighting the need for long-term evaluations and better collaboration for sustainable health-promoting public spaces.
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The paper offers an innovative exploration of the mediating role of psychological capital (PsyCap) in the relations between future orientation and self-advocacy among high-functioning adults on the autism spectrum. We posited that PsyCap, a composite of hope, self-efficacy, resilience, and optimism, serves as a crucial mediator of future orientation and self-advocacy. The sample comprised 40 high-functioning adults on the autism spectrum.

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Much research has focused on how emotional and spiritual intelligences promote well-being and help combat mental health issues. This comparative study, which was conducted in Israel and India with emerging adults enrolled in higher education, explored the relationship of emotional intelligence, spiritual intelligence, anxiety and depression, and satisfaction with life. The results in Israel showed a positive correlation of emotional intelligence with satisfaction with life, but in India, only spiritual intelligence correlated positively with satisfaction with life.

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Personal well-being is a major part of recovery for the many people who experience mental illness. Peer support specialists are mental health professionals who have themselves experienced mental illness and use their recovery experiences to facilitate the healing of others. In this study, we explored how peer specialists view their subjective well-being in their work with others and how they perceive their profession.

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Introduction: Simoctocog alfa (Nuwiq®) is a 4th generation recombinant FVIII with proven efficacy for the prevention and treatment of bleeding episodes (BEs) in previously treated patients with severe haemophilia A. The NuProtect study assessed the immunogenicity, efficacy and safety of simoctocog alfa in 108 previously untreated patients (PUPs). The incidence of high-titre inhibitors was 16.

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We conducted a single-centre retrospective cohort study in a French University Hospital between 2010 and 2018 to describe the risk of severe infectious event (SIE) within 2 years after the date of first rituximab infusion (T0) prescribed after the evidence of acquired hypogammaglobulinemia (gamma globulins [GG] ≤ 6 g/L) in the setting of autoimmune diseases (AID) other than rheumatoid arthritis. SIE occurred in 26 out of 121 included patients. Two years cumulative incidence rates were 12.

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In this research, we examined the academic and psychological coping of post-secondary students during the early stages of COVID-19. The main goal was to investigate correlations involving self- compassion, spirituality, psychological capital, and subjective well-being, and evaluate the mediating role of self-compassion and spirituality in the relationship between psychological capital and subjective well-being. We had 257 participants (ages 19-59) complete 5 questionnaires: demographic and academic information, Psychological Capital Questionnaire, Subjective Well-Being Index, Spiritual Intelligence Self- Assessment Inventory, and Self-Compassion Index.

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We report on the crystallite growth of nanometric NpO and UO powders. The AnO nanoparticles (An = U and Np) were synthesized by hydrothermal decomposition of the corresponding actinide(iv) oxalates. NpO powder was isothermally annealed between 950 °C and 1150 °C and UO between 650 °C and 1000 °C.

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In recent years, the hydrothermal conversion of actinide (IV) oxalates into nanometric actinide dioxides (O) has begun to be investigated as an alternative to the widely implemented thermal decomposition method. We present here a comparison between the hydrothermal and the conventional thermal decomposition of Pu(IV) oxalate in terms of particle size, morphology and residual carbon content. A parametric study was carried out in order to define the temperature and time applied in the hydrothermal conversion of tetravalent Pu-oxalate into PuO and to optimize the reaction conditions.

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Article Synopsis
  • - Sickle cell disease (SCD) is a common genetic disorder caused by a mutation in the beta-globin chain, leading to distorted red blood cells and various severe health complications, including pain crises and infections.
  • - Corticosteroids, although widely used for their anti-inflammatory properties and low cost, have well-documented adverse effects that may be particularly harmful to SCD patients, including inducing pain crises and increased hospitalizations.
  • - Recent research suggests that high doses of corticosteroids do not provide benefits for acute SCD events, prompting the need for alternative preventive treatments like hydroxyurea or blood transfusions when corticosteroids are necessary.
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This paper details the first dedicated production of homogeneous nanocrystalline particles of mixed actinide oxide solid solutions containing americium. The target compositions were UPuAmO, UAmO and UAmO. After successful hydrothermal synthesis and chemical characterisation, the nanocrystals were sintered and their structure and behaviour under self-irradiation were studied by powder XRD.

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Covalency involving the 5f orbitals is regularly invoked to explain the reactivity, structure and spectroscopic properties of the actinides, but the ionic versus covalent nature of metal-ligand bonding in actinide complexes remains controversial. The tetrakis 2,6-di-tert-butylphenoxide complexes of Th, U and Np form an isostructural series of crystal structures containing approximately tetrahedral MO cores. We show that up to 3 GPa the Th and U crystal structures show negative linear compressibility as the OMO angles distort.

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The structure and bonding properties of 16 complexes formed by trivalent f elements (M=U, Np, Pu and lanthanides except for Pm and Pr) with cyclopentadienyl (Cp) and cyclohexylisonitrile (C≡NCy) ligands, (Cp)M(C≡NCy), were studied by a joint experimental (XRD, NMR) and theoretical (DFT) analysis. For the large La(III) ion, the bis-adduct (Cp)La(C≡NCy) could also be synthesized and characterized. The metal-ligand interactions, focusing on the comparison of the actinides and lanthanides as well as on the competition of the two different ligands for M, were elucidated using the Quantum Theory of Atoms in Molecules (QTAIM) and Natural Bond Orbital (NBO) models.

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 Immune tolerance induction (ITI) with repeated factor VIII (FVIII) administration is the only strategy proven to eradicate inhibitors. The observational ITI study is evaluating ITI with a range of FVIII products.  This subgroup analysis reports prospective interim data for patients treated with a plasma-derived, von Willebrand factor-stabilized FVIII concentrate (pdFVIII/VWF, octanate).

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The ternary neptunium(V) (Np(V)) hydroxides Na[NpO(OH)]·0.5HO and Na[NpO(OH)] were synthesized in aqueous NaOH solutions at = 80 °C, and their crystal structures were determined to be monoclinic, 2, = 2, = 5.9859(2), = 10.

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Vaso-occlusive episodes (VOEs) are a major concern in patients with sickle cell disease (SCD). Exposure to systemic corticosteroids has been suspected to increase the occurrence of VOEs in case reports or series. No comparative study has been conducted to investigate this risk, which is still debated.

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The present research had two main objectives. The first was to examine the impact of emotional intelligence and aspects of spiritual intelligence on life satisfaction among emerging adults in high-income countries. The second objective was to study the interactions between the variables.

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Impaired platelet production is a mechanism of immune thrombocytopenia (ITP). Morphological abnormalities of megakaryocytes (MKs) are sometimes observed in this disease. Two studies have suggested an association between MK abnormalities and response to corticosteroids in primary ITP, but none have investigated this association for thrombopoietin-receptor agonists (TPO-RAs).

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Introduction: Luteal insufficiency corresponds to a progesterone deficiency affecting women who receive treatment for in vitro fertilization (IVF). Different routes of progesterone administration exist and have varying degrees of acceptability to patients. The aim of this study was to compare two luteal phase support (LPS) treatments: oral dydrogesterone versus micronized vaginal progesterone on the clinical pregnancy occurrence after fresh embryo transfer.

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Neptunium was the first actinide element to be artificially synthesized, yet, compared with its more famous neighbours uranium and plutonium, is less conspicuously studied. Most neptunium chemistry involves the neptunyl di(oxo)-motif, and transuranic compounds with one metal-ligand multiple bond are rare, being found only in extended-structure oxide, fluoride or oxyhalide materials. These combinations stabilize the required high oxidation states, which are otherwise challenging to realize for transuranic ions.

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We performed a systematic study of the complexes of trivalent lanthanide cations with the hydridotris(1-pyrazolyl)borato (Tp) ligand (LnTp; Ln = La, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb, and Lu) using both high-energy-resolution fluorescence-detected X-ray absorption near-edge structure (HERFD-XANES) and resonant inelastic X-ray scattering (RIXS) at the lanthanide L absorption edge. Here, we report the results obtained and we discuss them against calculations performed using density functional theory (DFT) and atomic multiplet theory. The spectral shape and the elemental trends observed in the experimental HERFD-XANES spectra are well reproduced by DFT calculations, while the pre-edge energy interval is better described by atomic multiplet theory.

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When in contact with oxidizing media, UO pellets used as nuclear fuel may transform into UO, UO, and UO. The latter starts forming by stress-induced phase transformation only upon cracking of the pristine UO and is associated with a 36% volumetric expansion with respect to the initial UO. This may pose a safety issue for spent nuclear fuel (SNF) management as it could imply a confinement failure and hence dispersion of radionuclides within the environment.

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