The present work focuses on the industrial inhibition of gaseous nitrided parts and on the industrial in-situ pre-treatment that can be used to avoid these inhibitions. The first objective is to obtain a repeatable defective nitriding process on carbon iron-based alloys, while the second is to determine the ability of determined in-situ pre-treatments to counter the previously mastered inhibition. Machining oil is used in order to obtain an industrially consistent inhibition. Its presence before chemical treatment strongly inhibits the adsorption of nitrogen atoms at the other surface, leading to heterogeneous nitriding properties of the treated samples. EDS analysis of oil residues indicates the presence of several elements, such as sulphur and carbon. As several studies already focused on the influence of sulphur on nitriding properties, experimentations on the influence of carbon are detailed. Contamination by carbon deposit leads to similar inhibition as in the case of a machining oil contamination. Literature analyses lead to the determination of three in-situ pre-treatments, namely urea (CH 4 N 2 O), pre-oxidation and ammonium chloride (NH 4 Cl), to counter the detrimental effects such contaminations. Although all the processes enable to suppress the nitriding inhibition due to the presence of machining oil, ammonium chloride indicates the best capability to activate the adsorption of nitrogen of machining oil contaminated surfaces.
AimTo develop clinical practice recommendations for nurse‐administered intramuscular injections in mental health.BackgroundIntramuscular injection is the main route of long‐acting injectable antipsychotics' administration that appear to improve the long‐term prognosis of mental illness. Specific guidelines related to the nurse administration of intramuscular injections need to be updated and to explore not only the technical aspects of this procedure.DesignA modified RAND/University of California Los Angeles (UCLA) appropriateness method Delphi study was conducted between October 2019 and September 2020.MethodsA multidisciplinary steering committee conducted a literature review and developed a list of 96 recommendations. These recommendations were submitted in a two‐round Delphi electronic survey to a panel of 49 experienced practicing nurses from five mental health hospitals in France. Each recommendation was rated for its appropriateness and applicability in clinical practice on a 9‐point Likert scale. Consensus among nurses was evaluated. The steering committee discussed the results after each round and approved the final set of recommendations.ResultsA final set of 79 specific recommendations were accepted for their appropriateness and applicability in clinical practice. Recommendations were classified in five domains: legal and quality assurance aspects, nurse–patient relationship, hygiene, pharmacology, and injection technique.ConclusionThe established recommendations placed patients at the heart of the decisions concerning the intramuscular injection and underlined the need for specific training programs. Future research should focus on the integration of these recommendations in clinical practice, by both before‐and‐after studies and regular assessments of professional practices with relevant indicators.ImpactThe recommendations developed for good nursing practices explored not only the technical aspects but integrated the nurse–patient relationship. These recommendations may impact usual practices of administration of long‐acting injectable antipsychotics and most of them could be applied in many countries.No Patient or Public ContributionDue to the study design.
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