3 results
VaTEST III: Validation of eight potential super-earths from TESS data
- Priyashkumar Mistry, Aniket Prasad, Mousam Maity, Kamlesh Pathak, Sarvesh Gharat, Georgios Lekkas, Surendra Bhattarai, Dhruv Kumar, Jack J. Lissauer, Joseph D. Twicken, Abderahmane Soubkiou, Francisco J. Pozuelos, Jon Jenkins, Keith Horne, Steven Giacalone, Khalid Barkaoui, Mathilde Timmermans, Cristilyn N. Watkins, Ramotholo Sefako, Karen A. Collins, David R. Ciardi, Catherine A. Clark, Boris S. Safonov, Avi Shporer, Joshua E. Schlieder, Zouhair Benkhaldoun, Chris Stockdale, Carl Ziegler, Emily A. Gilbert, Jehin Emmanuël, Felipe Murgas, Ian J. M. Crossfield, Martin Paegert, Michael B. Lund, Norio Narita, Richard P. Schwarz, Robert F. Goeke, Sergio B. Fajardo-Acosta, Steve B. Howell, Thiam-Guan Tan, Thomas Barclay, Yugo Kawai
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- Journal:
- Publications of the Astronomical Society of Australia / Volume 41 / 2024
- Published online by Cambridge University Press:
- 11 April 2024, e030
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NASA’s all-sky survey mission, the Transiting Exoplanet Survey Satellite (TESS), is specifically engineered to detect exoplanets that transit bright stars. Thus far, TESS has successfully identified approximately 400 transiting exoplanets, in addition to roughly 6 000 candidate exoplanets pending confirmation. In this study, we present the results of our ongoing project, the Validation of Transiting Exoplanets using Statistical Tools (VaTEST). Our dedicated effort is focused on the confirmation and characterisation of new exoplanets through the application of statistical validation tools. Through a combination of ground-based telescope data, high-resolution imaging, and the utilisation of the statistical validation tool known as TRICERATOPS, we have successfully discovered eight potential super-Earths. These planets bear the designations: TOI-238b (1.61$^{+0.09} _{-0.10}$ R$_\oplus$), TOI-771b (1.42$^{+0.11} _{-0.09}$ R$_\oplus$), TOI-871b (1.66$^{+0.11} _{-0.11}$ R$_\oplus$), TOI-1467b (1.83$^{+0.16} _{-0.15}$ R$_\oplus$), TOI-1739b (1.69$^{+0.10} _{-0.08}$ R$_\oplus$), TOI-2068b (1.82$^{+0.16} _{-0.15}$ R$_\oplus$), TOI-4559b (1.42$^{+0.13} _{-0.11}$ R$_\oplus$), and TOI-5799b (1.62$^{+0.19} _{-0.13}$ R$_\oplus$). Among all these planets, six of them fall within the region known as ‘keystone planets’, which makes them particularly interesting for study. Based on the location of TOI-771b and TOI-4559b below the radius valley we characterised them as likely super-Earths, though radial velocity mass measurements for these planets will provide more details about their characterisation. It is noteworthy that planets within the size range investigated herein are absent from our own solar system, making their study crucial for gaining insights into the evolutionary stages between Earth and Neptune.
Staff’s perspectives on physical activity in acute mental health general adult wards: a follow up survey
- N. Lekka, J. Wrazen, S. Nunns
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S546-S547
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Introduction
Physical activity (PA) has multiple health benefits for people with severe mental illness (SMI). People with SMI engage in less exercise and more sedentary behaviour than the general population; this can be further exacerbated by inpatient settings. Staff’s attitudes towards PA may influence patient engagement.
ObjectivesIn 2019, a study explored staff’s views on PA for acute psychiatric inpatients. This follow-up study by the same team aimed to establish whether the enablers/barriers to promoting PA have changed and to identify targets for intervention.
MethodsIn 2022, an online anonymous survey with free text was sent to all multidisciplinary team (MDT) members (n=91) of two acute general adult wards, including nurses, doctors, and allied health professionals (AHPs). A combination of quantitative and qualitative analysis was used to understand participants’ perspectives. Manual thematic analysis was completed to identify discrete themes.
ResultsResponse rate was significantly lower for the follow-up at 39% as opposed to 63% of the initial study, possibly reflective of post-COVID-19 staffing issues and lack of time for engagement in quality improvement activities. Respondents were nearly unanimous in agreeing that PA was beneficial to physical and mental health. Enablers to PA included higher numbers of staff (24%), more PA resources (22%), more PA-designated staff (19%), more PA-dedicated time (14%), and timetables of available activities (14%). The majority (65%) continued to report that promoting PA was difficult during their shift. Reported barriers included lack of staff (38%), lack of time (27%), and high levels of clinical activity (24%). Noticeably, nurses were much more likely than doctors or AHPs to report short staffing as a barrier to promoting PA (OR=19.8, p < 0.05). Participants described the gym (22%), walking groups (19%), and football (14%) as the most beneficial PA for patients, whilst 14% responded it was “whichever PA patients preferred”. This was mirrored by staff naming “user feedback” as a potential enabler. Reasons for PA being beneficial included “being outside” (24%) and “being inclusive” (11%). Only 45% of MDT members felt they had been provided with PA education/training.
ConclusionsStaff continued to acknowledge the importance of PA for physical and mental health and were aware of multiple enablers and barriers. Post-COVID-19, systemic issues such as staffing levels, lack of time, high levels of clinical activity, and lack of PA education/training remained barriers. Service user preference, enjoying the outdoors and inclusivity were features of activities perceived to be most beneficial. An integrative approach to mental health and wellbeing, providing inclusive activities, educating/training staff, promoting PA in inpatient psychiatric settings, and offering organisational support can contribute to improved PA provision and regular patient engagement.
Disclosure of InterestNone Declared
Induced Delusional Disorder in Rural Areas: A Case of Folie a Quatre
- V. Peritogiannis, M. Lekka, N. Papavassiliou, C. Mantas, V. Mavreas, T. Hyphantis
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- Journal:
- European Psychiatry / Volume 24 / Issue S1 / January 2009
- Published online by Cambridge University Press:
- 16 April 2020, 24-E955
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Background and aim:
Induced delusional disorder or folie a deux is characterized by the presence of similar delusional ideas in two or more individuals. The delusional system develops as a result of a close relationship with a person with an established psychotic disorder. Most commonly the affected persons are members of a family.
Methods:An unusual case of folie a famille involving four siblings, brother and three sisters, (folie a quatre) is presented. This case was detected in the context of a community-based psychiatric service in Greece, the Mobile Psychiatric Unit of the prefectures of Ioannina and Thesprotia.
Results:A 46-year-old woman was referred from primary care physicians for the management of a psychotic exacerbation. On the examination it was revealed that she and her three older siblings were sharing the delusional idea of being affected by their neighbors with magic. These siblings had been living in social isolation for long and have been querulant and aggressive toward their neighbors, against whom they had undertaken a succession of lawsuits. None of the rest siblings accepted to be examined so it could not be determined who the inducer was or what the diagnoses were for each of the affected persons. The patient did not receive the prescribed medication and did not engage in follow-up.
Conclusions:Cases of induced delusional disorder may be difficult to be detected and treated. Mobile psychiatric units in co-operation with primary care physicians may have an opportunity to provide appropriate treatment for such patients in rural areas.