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- Aguilar, J. A., et al.
(författare)
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Hardware Development for the Radio Neutrino Observatory in Greenland (RNO-G)
- 2022
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Ingår i: 37th International Cosmic Ray Conference, ICRC2021. - Trieste, Italy : Proceedings of Science.
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Konferensbidrag (refereegranskat)abstract
- The Radio Neutrino Observatory in Greenland (RNO-G) is designed to make the first observations of ultra-high energy neutrinos at energies above 10 PeV, playing a unique role in multi-messenger astrophysics as the world's largest in-ice Askaryan radio detection array. The experiment will be composed of 35 autonomous stations deployed over a 5 x 6 km grid near NSF Summit Station in Greenland. The electronics chain of each station is optimized for sensitivity and low power, incorporating 150 - 600 MHz RF antennas at both the surface and in ice boreholes, low-noise amplifiers, custom RF-over-fiber systems, and an FPGA-based phased array trigger. Each station will consume 25 W of power, allowing for a live time of 70% from a solar power system. The communications system is composed of a high-bandwidth LTE network and an ultra-low power LoRaWAN network. I will also present on the calibration and DAQ systems, as well as status of the first deployment of 10 stations in Summer 2021.
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| 3. |
- Arntyr Hellgren, P., et al.
(författare)
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Birth trauma in babies born to women with and without type 1 diabetes in Sweden 1998-2012 : relationship with maternal and baby weight
- 2017
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Ingår i: 49th Annual Meeting of the Diabetic Pregnancy Study Group. ; , s. 66-67
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- We compared birth trauma rates in pregnancies among women with and without type 1 diabetes (DM1) and tested the relationship with maternal body mass index (BMI) and large for gestational age (LGA) as a risk factor. This is a population-based cohort study 1998-2012 using the Swedish Medical Birth Registry (MBR) which includes 99% of Swedish pregnancies. All pregnancies up until gestational week 41 were included. We excluded mothers with other types of diabetes, duplex pregnancies and all pregnancies ending with a caesarean section (51.1% and 16.5% in women with and without DM1 respectively). The incidence of birth trauma was adjusted for BMI, maternal age, parity, Nordic or non-Nordic origin, smoking, chronic hypertensive disease, LGA and the baby ́s sex using logistic regression. This left 2,758 and 783,412 births with complete data among DM1 and control mothers respectively. The mean BMI, maternal age and gestational age at birth in full weeks was 25.6 (SD 4.5), 30.0 (SD 5.1) and 37.9 (SD 1.9) respectively among women with DM1 and 24.2 (SD 4.3), 29.7 (SD 5.1) and 38.9 (SD 1.5) respectively among controls. Preliminary results show that birth trauma rates did not vary significantly with increasing BMI compared with the reference BMI (18.50-24.9 kg/m2) among women with DM1 (odds ratios (OR) with increasing BMI (<18.49, 25.0-29.9, 30.0-34.9, >35.0 kg/m2) were 1.9 (95%CI 0.2-15.7), 1.0 (95%CI 0.7-1.5), 0.5 (95%CI 0.2-1.0), 1.1 (95%CI 0.5-2.4) respectively). Conversely, among controls, the OR for birth trauma increasedwith increasing BMI: 0.7 (95%CI 0.6-0.9), 1.4 (95%CI 1.3-1.5), 1.8 (95%CI 1.6-2.0), and 2.2 (95%CI 1.9-2.4) respectively. However, birth trauma was 3.9 (95%CI 2.7-5.7) and 7.0 (95%CI 6.5-7.5) fold more common after adjustment with LGA among women with andwithout DM1 respectively. We conclude that birth trauma rates are associated with LGA with comparatively greater impact among women without, than with, DM1. LGA is clearly an important outcome in its own right and a predictor of birth trauma. We hypothesise that the reduced risk of birth trauma from LGA among women with DM1 is due to increased monitoring with multiple ultrasounds to determine the fetal growth rate, along with earlier planned delivery (including earlier induction with vaginal delivery ata lower birthweight or caesarean section). While more research is needed to find better ways to reduce LGA in DM1, many of the obese control women would have undiagnosed/untreated GDM due to the Swedish criteria at the time (2 hours >=9.0mmol/l). Besidestreating lower levels of hyperglycaemia during pregnancy, the frequency of growth monitoring in obese mothers to reduce their babies’ risk of birth trauma due to LGA, needs to be evaluated. Life course cost effectiveness analyses would be useful.
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| 5. |
- Klein, Yannick, 1991-, et al.
(författare)
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Nature-related habits and their development and relation to mental health outcomes during the covid-19 pandemic : a population-based study in Sweden
- 2023
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Ingår i: International Journal of Behavioral Medicine. - : Springer Nature. ; , s. 136-
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Konferensbidrag (refereegranskat)abstract
- Background: Mental health disorders represent a major public health concern, and significantly contribute to the global burden of disease. The Covid-19 pandemic posed additional challenges for mental health. Spending time in natural environments has been linked to numerous health benefits.Purpose: Therefore, the present study investigated the role of different types of nature-related habits for symptoms of depression, anxiety, and loneliness, and their development during the pandemic 2019–2022, in Sweden. Further, we investigated whether nature habits could buffer negative effects of major life events on mental health outcomes (MHO).Method: Different types of nature-related habits, symptoms of depression, anxiety, loneliness, major life events, and control variables were assessed via self-report measures, in a sub-sample of respondents to the Swedish Occupational Survey of Health, in 2021 (n = 1 896), and 2022 (n = 1 579). Sequential linear regressions were conducted to analyze relationships between nature-related habits and MHO, while controlling for demographics, SES, relationship status, and pre-pandemic MHO.Results: Spending time in nature was consistently associated with fewer symptoms of depression, anxiety, and loneliness during the pandemic after adjusting for control variables. Especially spending time in forest and garden environments were associated with better mental health. Spending time in garden environments buffered effects of major life events on symptoms of depression and anxiety, but not loneliness. Increased nature habits during the pandemic related to improved MHO.Conclusions: Spending time in natural environments during the Covid-19 pandemic led to better MHO, with implications for urban development and public health promotion.
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| 8. |
- Saeedi, Maryam, 1991-, et al.
(författare)
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Evaluation of screening methods for Gestational diabetes mellitus in Sweden
- 2017
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Ingår i: 49th Annual Meeting of the Diabetic Pregnancy Study Group. ; , s. 79-80
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Introduction: The Swedish National Board of Health and Welfare (SNBHW) adopted the IADPSG criteria in 2015. However these criteria have not been implemented by the healthcare regions. In this cross-sectional, population-based study we evaluated the test characteristics of current screening methods in Sweden (risk factors or 2 hour OGTT) and different values of fasting blood glucose as indicators to perform an oral glucose tolerance test for diagnosing GDM. GDM is based on the IADPSG criteria (1.75 odds ratio (OR)) and HAPO data of 2.0 OR for adverse pregnancy outcomes.Method: Between 1994-1996 all pregnant women (n= 3616) in Örebro county were offered a 75 g oral glucose tolerance test with determination of fasting capillary blood glucose and 2-hour capillary blood glucose was used to diagnose GDM. Random blood glucose was measured four to six times during pregnancy. Data on traditional risk factors and BMI were registered during the maternal healthcare visits.Results: 15.5% women met the IDPSG criteria (1.75 OR) based on only two values in the OGTT, and 9.0% were diagnosed if using an OR of 2.0. Current screening methods in Sweden showed 33 % and 39 % sensitivity when using the IADPSG criteria and HAPO data of 2.0 OR, respectively. A fasting cut-off value of 4.8 mmol/l when using the IADPSG criteria (1.75 OR) showed 92 % sensitivity, 95 % specificity and occurred in 19% of the patients. A fasting cut-off value of 5.1 mmol/l when using the HAPO data of 2.0 OR showed 92 % sensitivity, 98 % specificity and occurred in 10% of the patients.Conclusion: Current screening methods for GDM screening in Sweden is poorly predictive of GDM according to the IADPSG criteria (1.75 OR) and HAPO data (2.0 OR), but fasting glucose showed good test characteristics and results in a lower rate of OGTTs.
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| 9. |
- Stenfors, Cecilia U. D., 1982-, et al.
(författare)
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The role of residential greenspace qualities and it’s closeness for mental health and sleep outcomes : Results from longitudinal studies on nationwide population-based cohorts in Sweden with fine-grained assessments
- 2023
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Ingår i: 17th International Congress of Behavioral Medicine. International Journal of Behavioral Medicine. ; , s. 136-137
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Konferensbidrag (refereegranskat)abstract
- Background: Mental health and sleeping problems are public health concerns associated with vast costs for society and individuals. Exposure and access to natural environments in terms of greenspace (vegetation) are associated with a range of benefits such as enhanced affect and cognition, and decreased stress. However, population-based studies investigating high-resolution, individual-level residential greenspace are yet lacking, as population-based studies have mainly assessed greenspace at the level of larger areas rather than the individual level. Furthermore, studies on residential greenspace and sleep are scarce.Objective & methods: Thus, in a set of large-scale population-based longitudinal studies, on nationwide cohorts in Sweden, objective high-resolution individual-level residential greenspace land cover assessments were made and the role of different greenspace qualities were investigated longitudinally for: 1) self-reported sleeping problems, 2) objective prescription medication purchase in terms of a) insomnia medications and b) antidepressants, while controlling for individual and neighbourhood confounders. Multilevel and generalized estimating equation models were conducted to estimate effects.Results: Results across studies showed that more residential greenspace primarily in the immediate residential surrounding (50 m and 100 m buffer zones around home) is associated with 1) less sleeping problems, and 2) lower risk of purchasing insomnia and antidepressant prescription medications. Furthermore, among physically active, greenspace further from home also associated with less sleeping problems.Conclusions: Results highlight the role of greenspace in the immediate residential surroundings for mental health and sleep outcomes, and the importance of integrating health-, environmental-, urban development- and greening policies, also mitigating climate change.
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