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- Allen, Naomi E., et al.
(författare)
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A prospective analysis of the association between macronutrient intake and renal cell carcinoma in the European Prospective Investigation into Cancer and Nutrition
- 2009
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Ingår i: International Journal of Cancer. - : Wiley. - 0020-7136 .- 1097-0215. ; 125:4, s. 982-987
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Tidskriftsartikel (refereegranskat)abstract
- Previous case-control studies have suggested that a high intake of animal foods and its associated nutrients are associated with an increased risk of renal cell carcinoma, although data from prospective studies are limited. We report here on the relationship between macronutrient intake and renal cell carcinoma incidence among 435,293 participants enrolled in the European Prospective Investigation into Cancer and Nutrition. Cox proportional hazard models were used to examine the association of dietary intake of fat, protein, carbohydrate, fiber and cholesterol and risk of renal cell carcinoma adjusted for age, sex, center, height, body mass index, physical activity, education, smoking, menopausal status, alcohol and energy intake. During an average 8.8 years of follow-up, 507 renal cell carcinoma cases occurred. Risk of renal cell carcinoma was not associated with macronutrient intake, including nutrients derived from animal sources. Our results indicate that macronutrient intake is not associated with risk of renal cell carcinoma in this cohort of European men and women. (C) 2009 UICC
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- Budtz-Lilly, Jacob, 1974-, et al.
(författare)
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Technical eligibility for endovascular treatment of the aortic arch after open type A aortic dissection repair
- 2021
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Ingår i: Journal of Thoracic and Cardiovascular Surgery. - : Elsevier BV. - 0022-5223 .- 1097-685X. ; 162:3, s. 770-777
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Tidskriftsartikel (refereegranskat)abstract
- ObjectiveThe objective was to report on the technical eligibility of patients previously treated for Stanford type A aorta dissection for endovascular aortic arch repair based on contemporary anatomic criteria for an arch inner-branched stent graft.MethodsAll patients treated for type A aorta dissection from 2004 to 2015 at a single aortic center were identified. Extent of repair and use of circulatory arrest were reported. Survival and reoperation were assessed using Kaplan–Meier and competing risk models. Anatomic assessment was performed using 3-dimensional computed tomography imaging software. Primary outcome was survival of 1 year or more and fulfillment of the arch inner-branched stent graft anatomic criteria.ResultsA total of 198 patients were included (158 DeBakey I, 32 DeBakey II, and 8 intramural hematoma). Mortality was 30 days (16.2%), 1 year (16.3%), and 10 years (45.0%). A total of 129 patients had imaging beyond 1 year (mean, 47.8 months), and 89 patients (69.0%) were eligible for arch inner-branched stent grafting. During follow-up, 19 patients (14.7%) met the threshold criteria for aortic arch treatment, of whom 14 (73.7%) would be considered eligible for arch inner-branched stent graft. Patients who underwent type A aorta dissection repair with circulatory arrest and no distal clamp were more often eligible for endovascular repair (88.8%) than those operated with a distal clamp (72.5%; P = .021). Among patients who did not meet the arch inner-branched stent graft anatomic criteria, the primary reasons were mechanical valve (40%) and insufficient proximal seal (30%).ConclusionsMore than two-thirds of patients post–type A aorta dissection repair are technically eligible for endovascular arch inner-branched stent graft repair. The development of devices that can accommodate a mechanical aortic valve and a greater awareness of sufficient graft length would significantly increase availability.
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- Danerek, Margaretha, et al.
(författare)
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Sympathetic responsibility in ethically difficult situations*.
- 2005
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Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 1600-0412 .- 0001-6349. ; 84:12, s. 1164-1171
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Tidskriftsartikel (refereegranskat)abstract
- Background. Ethical issues arise in many obstetric situations and demand constant consideration by obstetricians. The aim of this study was to highlight the meaning of being in an ethically difficult situation as narrated by obstetricians. Methods. A descriptive design with a qualitative approach using a hermeneutic phenomenological method for analysis. Interviews were performed with 14 obstetricians working in a Swedish hospital setting. Results. The overriding theme was Sympathetic responsibility in the decisions of critical importance for the mother and her infant. Five related themes were to: (i) proceed with a moral reasoning that leads to the choice of a possible solution; (ii) balance one's own medical knowledge and moral insight with the needs and requests of the parents; (iii) be aware of one's medical and moral responsibility in relation to the decision made; (iv) experience the ability to take action and to make and carry out difficult and important decisions relating to the health of the mother and infant; and (v) reflect on a given situation in a manner leading to a rational acceptance of one's own conduct. Conclusions. Sympathetic responsibility is the structure of the meaning of the obstetricians' lived experience, which means that the obstetricians with the help of their medical knowledge and their desire to support the mother's autonomy do what is best for the mother and her infant. Implications include that an exchange of ethical thoughts and moral reasoning should lead to a higher degree of mutual understanding between colleagues and between the different professionals. Co-operation is important to achieve the best outcome for the mother and her infant.
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- Johansson, Malin B, 1972-, et al.
(författare)
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Porous Fractals of MAPbI3 Perovskite : Characterization of Crystal Grain Formation by Irreversible Diffusion-Limited Aggregation
- 2018
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Konferensbidrag (refereegranskat)abstract
- Isopropanol solution based methylammonium lead triiodide (MAPbI3) is studied during the crystallization process. The crystal growth starts in an unstable suspension far from equilibrium by forming different dendritic patterns and terminates with aggregation of stable cubic crystalline grains into fractal clusters. Using transmission electron microscopy (TEM), the time evolution of a newly mixed suspension was studied over a period of two weeks at room temperature and a sequence of the morphological changes was observed. The crystallization process started with single dendritic growth exhibiting branches at 90 degrees angles to one another. After 4 hours, a multi-dendritic growth pattern and a transformation into small crystalline quantum dots were observed. After a week, clusters of crystal grains were formed into a fractal pattern and these patterns appear to be stable also during the second week. Electron and x-ray diffraction revealed the crystallinity of the quantum dots and the clusters of micrometer-sized crystals. Scanning transmission electron microscope (STEM) together with energy dispersive X-ray spectroscopy (EDS) showed that newly formed large grains, from a one hour old solution, displayed a core-shell structure with higher percentage of Pb atoms as compared to iodine at the surface. In the inner core of the grains the percentage of iodine was slightly higher. The electron diffraction (ED) scan over the newly formed grains revealed a polycrystalline surface whereas the inner part had a single crystal pattern. The same solution, now one-week-old, contained grains with only single crystal patterns in the ED scan and showed no core-shell character or polycrystalline surface. The measured percentage of iodine atoms compared to lead was 2:1 throughout the cross section, which is a quantitative value within the measurement. It can be concluded from these measurements that the suspension approaches higher crystallinity of the perovskite grains in an irreversible process, where the perovskite grains are insoluble in isopropanol. The perovskite material has also been characterized with scanning electron microscopy (SEM) and photoluminescence (PL) mapping where both techniques showed a very porous crystalline material. The PL mapping revealed two peaks at 730 and 760 nm for a thin film spin coated from a newly mixed solution, while a film deposited from a one week old solution showed three peaks, the last one at 830 nm. Because of the high crystallinity, it is suggested that all three peaks are due to band-to-band transitions and not due to localized states. These data will be analyzed further; however, the results contain information of the content of quantum dots versus larger crystals, as well as displaying emission intensity variations at different positions of the grains. The purpose with this project is to understand these phenomena of crystal growth. A new mesoporous perovskite material has been designed for optoelectronic purposes.
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- Trapp, Andrew C., et al.
(författare)
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Placement Optimization in Refugee Resettlement
- 2018
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Every year thousands of refugees are resettled to dozens of host countries. While there is growing evidence that the initial placement of refugee families profoundly affects their lifetime outcomes, there have been few attempts to optimize resettlement destinations. We integrate machine learning and integer optimization technologies into an innovative software tool that assists a resettlement agency in the United States with matching refugees to their initial placements. Our software suggests optimal placements while giving substantial autonomy for the resettlement staff to fine-tune recommended matches. Initial back-testing indicates that Annie can improve short-run employment outcomes by 22%-37%. We discuss several directions for future work such as incorporating multiple objectives from additional integration outcomes, dealing with equity concerns, evaluating potential new locations for resettlement, managing quota in a dynamic fashion, and eliciting refugee preferences.
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