scholarly journals Remediation, Time and Disaster

2016 ◽  
Vol 33 (5) ◽  
pp. 117-138 ◽  
Author(s):  
Anders Ekström
Keyword(s):  
2017 ◽  
Vol 33 (4) ◽  
pp. 1241-1255
Author(s):  
Ann Brower

At 12:51 on 22 February 2011, 12 people died beside me. The parapet and facade of an unreinforced masonry building on the main street of Christchurch, New Zealand, crushed the bus that I was riding. I'm the only one left, the lucky 13th. My leg, my hand, and my soul will never be the same. I broke more bones than the surgeons were willing to count, spent two months in the hospital, and most of a year off work. I walked, slept, and dreamed in a fog for four years. It cost half a million dollars to save my left leg. I treasure that leg, scars and all, but still feel the earthquake in every step. In this opinion paper, I share my story—from the earthquake, to the Bright Light, to the Dark Place, to the hospital, to the Dalai Lama, to the halls of Parliament. I also share the story of a nation coming to grips with its home on the Ring of Fire. The story ends on 8 May 2016, when Parliament passed the new Building Act, complete with a ministerially titled “Brower Amendment” that halved the remediation time for unreinforced masonry parapets and other falling hazards. I conclude with the lessons I've learned on making a difference.


Author(s):  
Jo¨rg Wo¨rner ◽  
Sonja Margraf ◽  
Walter Hackel

Since July 2002 a pump & treat remedial action has been in operation for the extraction of Uranium- and “CHC-compounds” contaminated water flowing in the ground of a formerly used industrial site where nuclear fuel elements were produced. Meanwhile about 21 kg Uranium and 28 kg CHC-compounds have been eliminated. Two ground-water plumes have transported the dissolved Uranium down-stream to locations where two main remediation-wells were in use for most of the remediation-time. They showed characteristic kinetic differences with respect to their U-nuclide vector from the very beginning. A meanwhile additionally close-by set well influenced that observation so that the formerly used two wells were assimilated gradually due to their relatively downstream position. Almost 300,000 m3 ground-water of the overall 440,000 m3 have been pumped therefrom. The second area’s remediation started in-between not being affected by the first plume’s aquifer. This observed assimilation is the result of intensive ground-water blending when the two plumes’ waters penetrate in a specific area by flowing within preferred aquifer’s paths. The first plume’s water characterized by decreasing Uranium-235 ratios is meanwhile dominated by the second plume’s water of up to 90% in case of the two elder wells. The overall activity of 132 MBq Uranium-235 has been extracted from the aquifer. Only a small area remains where the extraction of the first plume’s pure ground-water was started in 2009. The progress of the two plumes’ remediation is described by reporting the Uranium- and CHC-results of all wells. Nevertheless both target values of 20 μg/l and 10 μg/1 for dissolved Uranium and CHC-compounds, respectively, could not yet be reached for all remediation wells. In accordance to the 10μSv-concept of radiation protection the activity parameters have to be improved still in order to release the complete site from the German Atomic Law.


2020 ◽  
Vol 128 ◽  
pp. 106377 ◽  
Author(s):  
Maria Teresa Baldassarre ◽  
Valentina Lenarduzzi ◽  
Simone Romano ◽  
Nyyti Saarimäki

Author(s):  
Bronwyn Glaser ◽  
Amelie Lothe ◽  
Mélanie Chabloz ◽  
Daniel Dukes ◽  
Catherine Pasca ◽  
...  

Abstract The authors developed a computerized program, Vis-à-Vis (VAV), to improve socioemotional functioning and working memory in children with developmental disabilities. The authors subsequently tested whether participants showed signs of improving the targeted skills. VAV is composed of three modules: Focus on the Eyes, Emotion Recognition and Understanding, and Working Memory. Ten children with idiopathic developmental delay completed four 20-min weekly sessions of VAV for 12 weeks with an adult. Participants were evaluated before (Time 0) and after (Time 1) training and 6 months after remediation (Time 2). Subjects improved on all three modules during training and on emotion recognition and nonverbal reasoning post-VAV. These gains were still present at Time 2. VAV is a promising new tool for working on socioemotional impairments in hard-to-treat pediatric populations.


2016 ◽  
Vol 75 (11) ◽  
pp. 2489-2498 ◽  
Author(s):  
Xiaomin Li ◽  
Weihua Peng ◽  
Yingying Jia ◽  
Lin Lu ◽  
Wenhong Fan

Rhodobacter sphaeroides was used for bioremediation of wastewater polluted with cadmium (Cd) and zinc (Zn). The tolerance of the microorganism to selected heavy metals (HMs), as well as the effects of pH, temperature and inoculum size on the removal rate, was investigated. The remediation effects of R. sphaeroides were analysed at different initial concentrations of HMs. Bioremediation mechanisms were thoroughly discussed based on the results from the cell characterisation analysis. Cd and Zn could inhibit the growth of R. sphaeroides. However, Cd was more toxic than Zn, with corresponding EC50 values of 5.34 and 69.79 mg L−1. Temperature and pH had greater influence on the removal rate of HMs than inoculum size. The optimal conditions for temperature and pH were 35 °C–40 °C and pH 7, respectively. Initial concentration of HMs and remediation time also affected the removal rate. Rhodobacter sphaeroides had a relatively higher remediation effect under the present experimental conditions. The removal rates for Cd and Zn reached 97.92% and 97.76%, respectively. Results showed that biosorption and HM precipitation were the main bioremediation mechanisms. This information is necessary to better understand the removal mechanism of R. sphaeroides, and is significant for its pilot test and future practical application.


2002 ◽  
Vol 7 (2) ◽  
pp. 73
Author(s):  
C. Otto

The paper describes the hydraulic theory of recovering a dense plume using a newly devised dual pump recover system (DPR) and its feasibility to half the remediation time of a contaminated unconfined aquifer in a coastal urban environment. Although the DPR system was successfully applied to clean up the polluted aquifer, the hydraulic principles and techniques are also applicable to extract fresh groundwater from coastal aquifers without the risk of saltwater incursion. 


2005 ◽  
Vol 16 (1) ◽  
pp. 5-31 ◽  
Author(s):  
Sarah S. Hausman ◽  
Hanadi S. Rifai

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