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- Andersson, Hampus, 2002-, et al.
(författare)
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When the climate apocalypse comes I’ll make it : 16 yr old Hampus' survival month in the forest
- 2020
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Annan publikation (film/video) (populärvet., debatt m.m.)abstract
- When the climate apocalypse comes I’ll make it: 16 year old Hampus Andersson’s survival month living off the lands and waters in the forests of Norrbotten, Sweden. There is a lot of talk of crisis and apocalypse, due to war, to climate change. Young people worried about their future go on school strike and manifest, around the world. But, when the climate or any other crisis happens, how are these young (and adult) protesters prepared to fend for themselves? How long can you survive without electricity and water in the tap, with access to food in the supermarket? Thinking about all of this, 16 year old Hampus Andersson decided to try to live off the lands and waters for a full month, on his own. If there is such a crisis, would he make it on his own? From mid July to mid August 2019, the experiment went on. He made sure to learn from more experienced and older reindeer herders and others with experience from the forests. Hampus is not completely unaware on how to get access to food in the forest. His father is a Sámi reindeer herder, and his mother’s family are an agriculture family. But until this day he had never done such an experiment. How would he find food, water, shelter? What would be the hardest? Some things that he had never even thought about turned out to be harder than expected. During the stay Hampus documented his everyday life with photos and short films, and posted on his Facebook page and Instagram. This is a film made from those photos and videos, along with an interview by film maker Petri Storlöpare, Slowfilm AB. Hampus speaks of his experiences, thoughts and ideas on how to continue this experiment. Will he try the same in the Arctic winter, with temperatures down to minus 40 Celsius? The film project is supported by Dálkke: Indigenous Climate Change Studies, led by Dr. May-Britt Öhman, Centre for Multidisciplinary Studies on Racism, CEMFOR, Uppsala University.
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- Baharudin, Zikri Abadi
(författare)
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Characterizations of ground flashes from tropic to northern region
- 2014
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Konstnärligt arbete (övrigt vetenskapligt/konstnärligt)abstract
- This thesis portrays new information concerning the cloud-to-ground (CG) lightning flashes or ground flashes produced by thunderclouds. It emphasizes the importance of characterizing lightning studies as the relationship between lightning mechanisms, and of incorporating the influence of geographical location, latitude and storm type. Sweden, Malaysia and USA were chosen as the main locations for field experiments in 2009 to 2011 to gather a significant number of negative and positive CG flashes. This work provided data on a total of 1792 CG lightning flashes (1685 negative and 107 positive ones) from a total of 53 thunderstorms by monitoring both the slow and the fast electric field and the narrowband radiation field at 3 and 30 MHz signals simultaneously. This thesis is comprised of: (i) the relationship of the Low Positive Charge Region (LPCR) and Preliminary Breakdown Pulse (PBP) trains to the occurrence of negative CG, (ii) slow field changes generated by preliminary breakdown processes in positive and negative ground flashes, and (iii) the occurrence of positive and negative ground flashes. It was revealed that the PBP train appeared have a higher strength in the in Sweden. The strength of the PBP train was caused by the LPCR; in contrast, weak PBP trains were characteristic in tropical countries constituting insignificant LPCR and needing little energy to break the “blocking” agent to allow the flash to propagate downward to the ground. The second contribution concerns the characteristics of the PBP train mentioned; this includes novel information for Malaysia. Further, it is stated that there are some different characteristics in the PBP trains in Johor, Malaysia and Florida, USA. The studies of slow field changes generated by preliminary breakdown processes clarifies unclear features concerning the starting position of slow field changes generated by preliminary breakdown processes in positive and negative ground flashes. It was found that the slow field changes did not occur before the initial process of the commencement of preliminary breakdown. Single-station electric field measurements incorporating narrowband radiation field measurement and high resolution transient recording (12 bits) with an accuracy of several nanoseconds, allows one to distinguish between the intracloud activities and the preceding processes of ground flashes. The results for the interstroke intervals, amplitude distribution of subsequent return-stroke (SRS) and the number of strokes per flash in the tropics, subtropics and northern regions were similar. Finally, a significant number of positive return-stroke (RS) electric fields provided statistically significant information on the characteristics of these strokes.
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- Baharudin, Zikri Abadi, et al.
(författare)
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Electric field changes generated by preliminary breakdown pulse for positive lightning ground flashes in Sweden
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- This is the new study of the electric field changes generated by the preliminary breakdown for positive cloud-to-ground flashes which concerning on the association of slow field changes in preliminary breakdown process. In this study, a 107 positive cloud-to-ground lightning flashes recorded from the total of 14 thunderstorms generated by the whole flash were examined. The electric fields were measured with nanosecond resolution by using the slow electric field, fast electric field and narrowband radiation field at 3 and 30 MHz signals simultaneously. Our result shows that there is a pre-starting time, i.e. the duration between the first preliminary breakdown pulse and slow field changes starting point, which is found to be after the first preliminary breakdown pulse. The pre-starting time has the arithmetic mean – 3.0 ms and geometric mean – 1.8 ms, ranging from 0.3 to 21.7 ms. This study is consistent with the latest finding for the slow field changes in negative ground flashes where the slow field changes never start before the preliminary breakdown process.
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- Fornstedt, Helena, 1986-, et al.
(författare)
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The history of emissions - a graphic energy narrative
- 2021
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Konferensbidrag (populärvet., debatt m.m.)abstract
- This is a presentation of our ongoing work with a comic book presenting a narrative of the climate crisis and the needed transition to a low carbon world. The book starts with a description of the current situation of temperature rise and increasing greenhouse gas emissions. Then it gives an account of what is very likely to happen if this does not stop. The five pages presented in the exhibition represent the part of, the book where we highlight how entangled our industrial development is with fossil fuel energy. After that, the book goes on to describe prevalent ideas that make the transitions hard. We talk about economic growth, morality, and our western view on time, liberty and technology. The book ends with a suggestion of how a transition away from fossil fuels might come about. This is a popular science project aimed to raise awareness of these issues.
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- Hrynczenko, Iwona, et al.
(författare)
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Shadow dance : Installation and discussion on proposed solutions for embodied games through cross-disciplinary workshops within an educational context
- 2010
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Konferensbidrag (refereegranskat)abstract
- This paper argues the issue of embodiment and gesture in games, the aesthetics of movement from the phenomenological point of view, and suggests a framework proposal for DAMA, a Dance and Media Art Network interdisciplinary network project, which integrates students and teachers from art schools and universities within the European Nordic and Baltic regions. This argument is supported by documentation of Shadow Dance installation that presents an interactive tool for corporal expressions, based on real-time movement capture, an open source and visual programming environment (Pure Data), all integrated within a web environment. The aim of this installation is to propose a different perspective based on corporal movement’s aesthetics via subjective expressions. It is one of the action points for the game development process, during interdisciplinary workshops, proposing content based on traditions in dance and physical theatre and encouraging the notions of presence and creative use of whole body movements across digital space and especially within physical games.
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- Li, Shiyu, 1991-
(författare)
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Engineering Surfaces of Solid-State Nanopores for Biomolecule Sensing
- 2021
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Konstnärligt arbete (övrigt vetenskapligt/konstnärligt)abstract
- Nanopores have emerged as a special class of single-molecule analytical tool that offers immense potential for sensing and characterizing biomolecules such as nucleic acids and proteins. As an alternative to biological nanopores, solid-state nanopores present remarkable versatility due to their wide-range tunability in pore geometry and dimension as well as their excellent mechanical robustness and stability. However, being intrinsically incompatible with biomolecules, surfaces of inorganic solids need be modified to provide desired functionalities for real-life sensing purposes. In this thesis, we presented an exploration of various surface engineering strategies and an examination of several surface associated phenomena pertaining specifically to solid-state nanopores. Based on the parallel sensing concept using arrayed pores, optical readout is mainly employed throughout the whole study.For the surface engineering aspect, a list of approaches was explored. A versatile surface patterning strategy for immobilization of biomolecules was developed based on selective poly(vinylphosphonic acid) passivation and electron beam induced deposition technique. This scheme was then implemented on nanopore arrays for nanoparticle localization. In addition, vesicle rupture-based lipid bilayer coating was adapted to truncated-pyramidal nanopores, which was shown to be effective for the minimizing DNA-pore interaction. Further, HfO2 coating by means of atomic layer deposition was employed to prevent the erosion of Si-based pores and to shrink the pore diameter, which enabled reliable investigations of DNA clogging and DNA polymerase docking.For the surface associated phenomena, several findings were made. The lipid bilayer formation on truncated pyramidal nanopores via instantaneous rupture of individual vesicles was quantified based on combined ionic current monitoring and optical observation. The probability of pore clogging appeared to linearly increase with the length of DNA strands and applied bias voltage, which could be attributed a higher probability of knotting and/or folding of longer DNA strands and more frequent translocation events at higher voltage. A free-energy based analytical model was proposed to evaluate the DNA-pore interaction and to interpret observed clogging behavior. Finally, docking of DNA polymerase on nanopore arrays was demonstrated using label-free optical method based on Ca2+ indicator dyes, which may open the avenue to sequencing-by-synthesis enabled by the docked polymerase.
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