Workshop GOOD PRACTICE verbindend leven en leren in de stad CSL-conferentie UCSIA 19 september 2019

PowerPoint presentation for our workshop : GOOD PRACTICEstatus: publishe

Spatial variability of peat subsidence in Southeast Asia by land use

Thesis: M. Eng. in Environmental Engineering Science, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, September, February, 2020"February 2020." Manuscript.Includes bibliographical references (pages 32-33).Variograms are a valuable tool for geospatial analysis as they provide a description of how data are correlated as a function of separation distance. Their application can prove valuable for not only analyzing variations in environmental parameters such as peat subsidence in two dimensional space, but also to understand the factors governing these variations. With the deforestation and drainage of wetlands in Southeast Asia, there has been a gradual sinking across large areas of land (i.e. subsidence). Exposed carbon-rich peat oxidizes and subsequently subsides, emitting carbon dioxide into the atmosphere. Interferometric Synthetic Aperture Radar (InSAR) satellite data coupled with geostatistical analysis have been used to obtain key information on how subsidence varies at a fine spatial resolution. This project used gridded datasets from 8 sites across Indonesia and Malaysia to quantify the variance and spatial continuity of subsidence by land use type at a short spatial scale (1 kilometer). Subsidence rates in smallholder area and moderately degraded peatswamp forest were found to be autocorrelated within a few hundred meters, ranges of 270 ± 30 m and 230 m ± 40 m, respectively.by Amber R. VanHemel.M. Eng. in Environmental Engineering ScienceM. Eng. in Environmental Engineering Science Massachusetts Institute of Technology, Department of Civil and Environmental Engineerin

High mobility In2O3:H transparent conductive oxides prepared by atomic layer deposition and solid phase crystallization

The preparation of high-quality In2O3:H, as transparent conductive oxide (TCO), is demonstrated at low temperatures. Amorphous In2O3:H films were deposited by atomic layer deposition at 100 °C, after which they underwent solid phase crystallization by a short anneal at 200 °C. TEM analysis has shown that this approach can yield films with a lateral grain size of a few hundred nm, resulting in electron mobility values as high as 138 cm2/V s at a device-relevant carrier density of 1.8 × 1020 cm–3. Due to the extremely high electron mobility, the crystallized films simultaneously exhibit a very low resistivity (0.27 mO cm) and a negligible free carrier absorption. In conjunction with the low temperature processing, this renders these films ideal candidates for front TCO layers in for example silicon heterojunction solar cells and other sensitive optoelectronic application

Lita Nelsen (interviewed by Amber VanHemel)

Interview conducted with an MIT alumna as part of the Margaret MacVicar Memorial AMITA (Association of MIT Alumnae) Oral History Project. The purpose of the project is to document the life histories of women graduates of the Massachusetts Institute of Technology

Andrea Sanders (interviewed by Amber VanHemel)

Interview conducted with an MIT alumna as part of the Margaret MacVicar Memorial AMITA (Association of MIT Alumnae) Oral History Project. The purpose of the project is to document the life histories of women graduates of the Massachusetts Institute of Technology

THE VALUE OF CLASS-IC ANTIARRHYTHMIC DRUGS FOR ACUTE CONVERSION OF PAROXYSMAL ATRIAL-FIBRILLATION OR FLUTTER TO SINUS RHYTHM

AbstractIn a single-blind randomized study, the efficacy and safety of intravenous propafenone (2 mg/kg body weight per 10 min) versus flecainidc (2 mg/kg per 10 min) were assessed in 50 patients with atrial fibrillation or flutter. Treatment was considered successful if sinus rhythm occurred within 1 h. Conversion to sinus was achieved in 11 (55%) of 20 patients with atrial fibrillation treated with propafenone and in 18 (90%) of 20 with atrial fibrillation treated with flecainide (p < 0.02). If atrial fibrillation was present ⩽24 h, conversion to sinus rhythm was achieved in 8 (57%) of 14 patients in the propafenone group and 13 (93%) of 14 in the flecainide group (p < 0.05). Atrial flutter was converted in two (40%) of five patients treated with propafenone and in one (20%) of five with flecainide (p = NS).Mean time to conversion was 16 ± 10 min in the propafenone group versus 18 ± 13 min in the flecainide group (p = NS). QRS lengthening (83 ± 15 to 99 ± 20 ms) was observed only in the patients treated with flecainide (p < 0.001). Patients successfully treated with propafenone showed significantly higher plasma levels than those whose arrhythmia did not convert to sinus rhythm. Transient adverse effects were more frequent in the flecainide group (40%) than in the propafenone group (8%) (p < 0.01).In conclusion, at a dose of 2 mg/kg in 10 min, flecainde is more effective than propafenone for conversion of paroxysmal atrial fibrillation to sinus rhythm. However, considering the propafenone plasma levels and very few adverse effects, the dose or infusion rate, or both, used in the propafenone group may not have been sufficient to achieve an optimal effect. Neither drug seems very effective in patients with atrial flutter