57 research outputs found

    Green IS Assimilation: A Theoretical Framework and Research Agenda

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    The current paper presents a theoretical framework on the assimilation of Green IS in organizations. The assimilation of Green IS comprises three stages, namely, Green IS initiation, adoption, and routinization. The different stages of assimilation are proposed to be affected by different groups of factors. Based on institutional theory, organizational information processing theory and organization theory, environmental uncertainty, organizational slack, and institutional pressure are employed to explain Green IS assimilation, and the importance of each of these factors will vary in different stages of assimilation. Institutional factors and environmental uncertainty will affect the initiation of adoption of Green IS, while organizational resources will affect the adoption and rountinization of Green IS. Organizational resources will moderate the relationship between environmental uncertainty and Green IS adoption. The proposed framework is planned to be tested in the future empirical study. Finally, theoretical and managerial implications of the proposed conceptual model are presented

    Education Curriculum on Extracorporeal Membrane Oxygenation: The Evolving Role of Simulation Training

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    Continuing education is essential for the success and safety of an extracorporeal membrane oxygenation (ECMO) programme. However, it is challenging due to the intrinsic characteristic of ECMO—a complex, high-risk, low-volume clinical activity which require teamwork, inter-professional communication, critical decision and rapid response especially in emergency. Thus, simulation is a rapidly evolving teaching methodology in ECMO education to address those training needs that cannot be entirely addressed by traditional teaching modalities. The development of a simulation programme requires commitment on resources for equipment, environment setup and training of personnel. Knowledge on ECMO management, education science and debriefing technique forms the cornerstone of successful ECMO simulation facilitators and hence the simulation programme. Currently, researches have already shown that ECMO simulation can improve individual and team performance despite that its impact on patient outcome is still unknown. In the future, the role of simulation will increase importantly in multicentre research, certifying specialists and credentialing if standardization of training curriculum can be achieved

    Combining CD4 recovery and CD4: CD8 ratio restoration as an indicator for evaluating the outcome of continued antiretroviral therapy: an observational cohort study

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    Immune recovery following highly active antiretroviral therapy (HAART) is commonly assessed by the degree of CD4 reconstitution alone. In this study, we aimed to assess immune recovery by incorporating both CD4 count and CD4:CD8 ratio

    Zebularine and Trichostatin A sensitised human breast adenocarcinoma cells towards tumour necrosis factor-related apoptosis inducing ligand (TRAIL)-induced apoptosis

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    Tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) is a promising cancer therapeutic agent due to its selective killing on cancer cells while sparing the normal cells. Nevertheless, breast adenocarcinoma cells can develop TRAIL resistance. Therefore, this project investigated the anti-cancer effects of the combination of epigenetic drugs zebularine and trichostatin A (ZT) with TRAIL (TZT) on the human breast adenocarcinoma cells. This treatment regimen was compared with the natural anti-cancer compound curcumin (Cur) and standard chemotherapeutic drug doxorubicin (Dox). As compared to TRAIL treatment, TZT treatment hampered the cell viability of human breast adenocarcinoma cells MDA-MB-231 significantly but not MCF-7 and immortalized non-cancerous human breast epithelial cells MCF10A. Unlike TZT, Cur and Dox treatments reduced cell viability in both human breast adenocarcinoma and epithelial cells significantly. Nevertheless, there were no changes in cell cycle in both TRAIL and TZT treatments in breast adenocarcinoma and normal epithelial cells. Intriguingly, Cur and Dox treatment generally induced G2/M arrest in MDA-MB-231, MCF-7 and MCF10A but Cur induced S phase arrest in MCF10A. The features of apoptosis such as morphological changes, apoptotic activity and the expression of cleaved poly (ADP) ribose polymerase (PARP) protein were more prominent in TRAIL and TZT-treated MDA-MB-231 as compared to MCF10A at 24 h post-treatment. Compared to TZT treatment, Cur and Dox treatments exhibited lesser apoptotic features in MDA-MB-231. Collectively, the sensitization using Zeb and TSA to augment TRAIL-induced apoptosis might be an alternative therapy towards human breast adenocarcinoma cells, without harming the normal human breast epithelial cells

    Nanostructured Bimetallic Block Copolymers as Precursors to Magnetic FePt Nanoparticles

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    Phase-separated block copolymers (BCPs) that function as precursors to arrays of FePt nanoparticles (NPs) are of potential interest for the creation of media for the next-generation high-density magnetic data storage devices. A series of bimetallic BCPs has been synthesized by incorporating a complex containing Fe and Pt centers into the coordinating block of four different poly­(styrene-<i>b</i>-4-vinylpyridine)­s (PS-<i>b</i>-P4VPs, <b>P1–P4</b>). To facilitate phase separation for the resulting metalated BCPs (<b>PM1–PM4</b>), a loading of the FePt-bimetallic complex corresponding to ca. 20% was used. The bulk and thin-film self-assembly of these BCPs was studied by transmission electron microscopy (TEM) and atomic force microscopy, respectively. The spherical and cylindrical morphologies observed for the metalated BCPs corresponded to those observed for the metal-free BCPs. The products from the pyrolysis of the BCPs in bulk were also characterized by TEM, powder X-ray diffraction, and energy-dispersive X-ray spectroscopy, which indicated that the FePt NPs formed exist in an fct phase with average particle sizes of ca. 4–8 nm within a carbonaceous matrix. A comparison of the pyrolysis behavior of the metalated BCP (<b>PM3</b>), the metalated <b>P4VP</b> homopolymer (<b>PM5</b>), and the molecular model organometallic complex revealed the importance of using a nanostructured BCP approach for the synthesis of ferromagnetic FePt NPs with a smaller average NP size and a close to 1:1 Fe/Pt stoichiometric ratio

    Effects of varying blood flow rate during peripheral veno-arterial extracorporeal membrane oxygen (V-A ECMO) on left ventricular function measured by two-dimensional strain

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    BackgroundWe evaluated the effects of varying blood flow rate during peripheral veno-arterial extracorporeal membrane oxygen (V-A ECMO) on left ventricular function measured by two-dimensional strain.MethodsAdult patients who were supported by peripheral V-A ECMO were recruited. Serial hemodynamic and cardiac performance parameters were measured by transthoracic echocardiogram within the first 48 h after implementation of V-A ECMO. Measurements at 100%, 120%, and 50% of target blood flow (TBF) were compared.ResultsA total of 54 patients were included and the main indications for V-A ECMO were myocardial infarction [32 (59.3%)] and myocarditis [6 (11.1%)]. With extracorporeal blood flow at 50% compared with 100% TBF, the mean arterial pressure was lower [66 ± 19 vs. 75 ± 18 mmHg, p &lt; 0.001], stroke volume was greater [23 (12–34) vs. 15 (8–26) ml, p &lt; 0.001], and cardiac index was higher [1.2 (0.7–1.7) vs. 0.8 (0.5–1.3) L/min/m2, p &lt; 0.001]. Left ventricular contractile function measured by global longitudinal strain improved at 50% compared with 100% TBF [−2.8 (−7.6- −0.1) vs. −1.2 (−5.2–0) %, p &lt; 0.001]. Similarly, left ventricular ejection fraction increased [24.4 (15.8–35.5) vs. 16.7 (10.0–28.5) %, p &lt; 0.001] and left ventricular outflow tract velocity time integral increased [7.7 (3.8–11.4) vs. 4.8 (2.5–8.5) cm, p &lt; 0.001]. Adding echocardiographic parameters of left ventricular systolic function to the Survival After Veno-arterial ECMO (SAVE) score had better discriminatory value in predicting eventual hospital mortality (AUROC 0.69, 95% CI 0.55–0.84, p = 0.008) and successful weaning from V-A ECMO (AUROC 0.68, 95% CI 0.53–0.83, p = 0.017).ConclusionIn the initial period of V-A ECMO support, measures of left ventricular function including left ventricular ejection fraction and global longitudinal strain were inversely related to ECMO blood flow rate. Understanding the heart-ECMO interaction is vital to interpretation of echocardiographic measures of the left ventricle while on ECMO

    Association between the risk of seizure and COVID-19 vaccinations: A self-controlled case-series study

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    OBJECTIVE: The risk of seizure following BNT162b2 and CoronaVac vaccinations has been sparsely investigated. This study aimed to evaluate this association. METHOD: Patients who had their first seizure-related hospitalization between February 23, 2021 and January 31, 2022 were identified in Hong Kong. All seizure episodes happening on the day of vaccination (day 0) were excluded since clinicians validated that most of the cases on day 0 were syncopal episodes. Within-individual comparison using a modified self-controlled case series analysis was applied to estimate the incidence rate ratio (IRR) with 95% confidence intervals (CI) of seizure using conditional Poisson regression. RESULTS: We identified 1656 individuals who had their first seizure-related hospitalization (BNT162b2: 426; CoronaVac: 263; unvaccinated: 967) within the observation period. The incidence of seizure was 1.04 (95% CI: 0.80-1.33) and 1.11 (95% CI: 0.80-1.50) per 100,000 doses of BNT162b2 and CoronaVac administered respectively. 16 and 17 individuals received second dose after having first seizure within 28 days after first dose of BNT162b2 and CoronaVac vaccinations, respectively. None had recurrent seizures after the second dose. There was no increased risk during day 1-6 after the first (BNT162b2: IRR=1.39, 95% CI=0.75-2.58; CoronaVac: IRR=1.19, 95% CI=0.50-2.83) and second doses (BNT162b2: IRR=1.36, 95% CI 0.72-2.57; CoronaVac: IRR=0.71, 95% CI=0.22-2.30) of vaccinations. During 7-13, 14-20- and 21-27-days post-vaccination, no association was observed for both vaccines. SIGNIFICANCE: The findings demonstrated no increased risk of seizure following BNT162b2 and CoronaVac vaccinations. Future studies will be warranted to evaluate the risk of seizure following COVID-19 vaccinations in different populations with subsequent doses to ensure the generalizability

    Nurses' knowledge of universal health coverage for inclusive and sustainable elderly care services

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    Objectives: to explore nurses' knowledge of universal health coverage (UHC) for inclusive and sustainable development of elderly care services. Method: this was a cross-sectional survey. A convenience sample of 326 currently practicing enrolled nurses (EN) or registered nurses (RN) was recruited. Respondents completed a questionnaire which was based on the implementation strategies advocated by the WHO Global Forum for Governmental Chief Nursing Officers and Midwives (GCNOMs). Questions covered the government initiative, healthcare financing policy, human resources policy, and the respondents' perception of importance and contribution of nurses in achieving UHC in elderly care services. Results: the knowledge of nurses about UHC in elderly care services was fairly satisfactory. Nurses in both clinical practice and management perceived themselves as having more contribution and importance than those in education. They were relatively indifferent to healthcare policy and politics. Conclusion: the survey uncovered a considerable knowledge gap in nurses' knowledge of UHC in elderly care services, and shed light on the need for nurses to be more attuned to healthcare policy. The educational curriculum for nurses should be strengthened to include studies in public policy and advocacy. Nurses can make a difference through their participation in the development and implementation of UHC in healthcare services.Objetivos: explorar o conhecimento dos enfermeiros sobre a cobertura universal de saúde (CUS) para o desenvolvimento inclusivo e sustentável de serviços de saúde a idosos. Método: estudo transversal. Foi recrutada uma amostra de conveniência de 326 enrolled nurses (EN) ou registered nurses (RN). Os entrevistados responderam a um questionário com base nas estratégias de implementação preconizadas pelo Fórum Global da OMS para Governmental Chief Nursing Officers and Midwives (GCNOMs). As perguntas abordavam iniciativas do governo, políticas de financiamento da saúde, políticas de recursos humanos e percepção dos entrevistados sobre a importância e contribuição do enfermeiro no alcance da CUS em serviços de cuidados a idosos. Resultado: o conhecimento de enfermeiros sobre a CUS em serviço de atenção ao idoso foi razoavelmente satisfatório. Enfermeiros tanto da prática clínica como da gestão perceberam-se contribuindo mais e tendo mais importância do que aqueles que trabalham na educação. Eles eram relativamente indiferentes à política de saúde e à política. Conclusão: a pesquisa revelou uma lacuna de conhecimento considerável no conhecimento da CUS pelos enfermeiros nos serviços de cuidados a idosos e evidenciou a necessidade de enfermeiros terem mais sintonia com a política de saúde. O currículo de formação para preparar os enfermeiros deve ser reforçado para incluir estudos em política pública e advocacia. Os enfermeiros podem fazer a diferença por meio de sua participação no desenvolvimento e implementação da CUS nos serviços de saúde.Objetivos: explorar los conocimientos que tienen las enfermeras sobre la cobertura universal de salud (CUS) para el desarrollo inclusivo y sostenible de servicios para el cuidado de adultos mayores. Método: se utilizó una encuesta transversal. Se formó una muestra de conveniencia de 326 enrolled nurses (EN) o registered nurses (RN) que actualmente estuvieran ejerciendo. Los encuestados respondieron a un cuestionario basado en las estrategias de implementación apoyadas por el WHO Global Forum for Government Chief Nursing and Midwifery Officers (WGFGCNO). Las preguntas abarcaban la iniciativa del gobierno, políticas de financiamiento de la salud, las políticas de recursos humanos y la percepción de los encuestados sobre la importancia y la contribución de las enfermeras en el logro de la CUS en los servicios de cuidado para adultos mayores. Resultados: el conocimiento de las enfermeras sobre CUS en el servicio de cuidado para los adultos mayores fue bastante satisfactorio. Tanto las enfermeras de práctica clínica y como las de gestión perciben tener un mayor aporte e importancia que las de que están en educación. Tenían un punto de vista relativamente indiferente a la política sanitaria y la política. Conclusión: la encuesta descubrió una considerable brecha en el conocimiento de las enfermeras sobre CUS en los servicios de cuidado para adultos mayores y puso de manifiesto la necesidad de que las enfermeras estén más en sintonía con la política sanitaria. El plan de estudios para la preparación de las enfermeras debe fortalecerse para incluir estudios en las políticas públicas y promoción. Las enfermeras pueden hacer una diferencia a través de su participación en el desarrollo e implementación de CUS en los servicios de salud
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