Αλέξανδρος Γ. Σφακιανάκης: 02/22/19

Friday, February 22, 2019

Time Magazine: Illegal Immigrants are Climate Refugees

Guest essay by Eric Worrall According to Time Magazine, President Trump's Climate Change Policies are helping to create the border crisis. The Real Culprit Behind Trump's Border Emergency? Climate Change By JUSTIN WORLAND2:15 PM EST President Donald Trump is expected to convene a new panel that will likely undermine the expert consensus that climate change…

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TIME MAG: The Culprit Behind Trump’s Border Emergency? ‘Climate Change’ – Labels them ‘climate refugees’

https://ift.tt/2U0nS7q By JUSTIN WORLAND February 22, 2019 President Donald Trump is expected to convene a new panel that will likely undermine the expert consensus that climate change threatens national security. But experts say that move is at odds with his recent declaration of a national emergency at the U.S. border, where thousands of the Central […]

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[ASAP] H2 Dissociation on H-Precovered Ni(100) Surface: Physisorbed State and Coverage Dependence

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The Journal of Physical Chemistry C

DOI: 10.1021/acs.jpcc.8b10500

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[ASAP] Mechanism of Water Splitting on Gadolinium-Doped CeO2(111): A DFT + Study

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The Journal of Physical Chemistry C

DOI: 10.1021/acs.jpcc.8b12037

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Programmed Electrochemical Exfoliation of Graphite to High Quality Graphene

Chem. Commun., 2019, Accepted Manuscript
DOI: 10.1039/C9CC00393B, Communication

Duhong Chen, Fei Wang, Yijuan Li, Wei-Wei Wang, Teng-Xiang Huang, Jian-Feng Li, Kostya Novoselov, Zhong-qun Tian, Dongping Zhan
We propose programed potential modulation strategies to balance the ion intercalation/deintercalation, surface tailoring and bubbling dispersion processes in the electrochemical exfoliation of graphite, resulting in high-quality graphene with high crystallinity,...
The content of this RSS Feed (c) The Royal Society of Chemistry

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[ASAP] Suppressed Out-of-Plane Polarizability of Free Excitons in Monolayer WSe2

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ACS Nano

DOI: 10.1021/acsnano.8b08905

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[ASAP] A Temperature-Gated Nanovalve Self-Assembled from DNA to Control Molecular Transport across Membranes

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ACS Nano

DOI: 10.1021/acsnano.8b09200

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[ASAP] Fabrication of SnS2/Mn2SnS4/Carbon Heterostructures for Sodium-Ion Batteries with High Initial Coulombic Efficiency and Cycling Stability

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ACS Nano

DOI: 10.1021/acsnano.9b00375

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Idolization and ramification between globalization and ecological footprints: evidence from quantile-on-quantile approach

Abstract

Globalization persists the tendency to alter numerous aspects of today's world including religion, transport, language, living styles, and international relations; however, its potential to influence quality of environment is the prime concern for trade and environmental policies guidelines (Audi and Ali 2018). In response to the growing interest for identifying the dynamic relationship between globalization and environmental performance, the present study seeks to investigate the critical link between globalization and ecological footprints in top 15 globalized countries between 1970 and 2016. Applying the novel methods of quantile-on-quantile regression (QQ) and Granger causality in quantiles, the findings examine the manners in which quantiles of globalization affect the quantiles of ecological footprints and vice versa. The empirical results suggest that globalization has a long-term positive effect on ecological footprint and vice versa in case of Belgium, the Netherlands, Sweden, Switzerland, Denmark, Norway, Canada, and Portugal. On the other hand, the estimated results indicate a negative effect between globalization and ecological footprint in the case of France, Germany, the UK, and Hungary. These results extend the recent findings on the globalization–environment nexus implying that the magnitude of relationship among both variables varies with countries demanding individual focus and cautions for postulating environmental and trade policies.

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The Political Divide on Coal vs. Renewables Is Fake News

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Study: we don’t have the IQ to prevent ecological disaster

From the "SJW supplements science" department and the University of Central Florida. High IQs aren't going to be enough to stop an ecological disaster. It's going to take social intelligence, too. That's the conclusion of a new study co-authored by a University of Central Florida researcher and published Wednesday in the journal Nature Communications. The findings could help identify why some groups…

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Enhancement of phytoextraction by Taiwanese chenopod and Napier grass by soapnut saponin and EDDS additions

Abstract

Employment of biosurfactants and biodegradable chelants could further promote sustainability of soil and groundwater remediation tasks. Biosurfactant (soapnut saponin) and biodegrading chelants (ethylenediamine-N,N′-disuccinic acid (EDDS)) were employed to enhance the phytoextraction by native Taiwanese chenopod (Chenopodium formosanum Koidz.), Napier grass (Pennisetum purpureum) cultivar Taishi No. 4, and soapwort (Saponaria officinalis). Ethylene diamine tetraacetic acid (EDTA) was also employed as the control. Contaminated soils as silty clay loam texture was collected from a defunct rice paddy, containing chromium (Cr), cadium (Cd), and copper (Cu). Addition of both soapnut saponin and EDDS proportionally increased bioaccumulation factors (BCFs) of aboveground biomass for all three plants. Taiwanese chenopod demonstrated the best BCF values among three plants, with BCF increased from 0.76 to 2.6 and 1.3 for Cu under the presence of the highest dosages of EDDS and saponin. Plant aboveground biomass did exhibit negative correlation toward biomass metal concentrations. Presence of saponin did exhibit the least negative slopes among the correlations of all three additives for three plants. Taiwanese chenopod did exhibit the least negative slopes among the correlations of all three additives for three plants. Above observations suggested that saponin may have some protection for plants, especially for Napier grass. Taiwanese chenopod could possess more tolerance toward heavy metals than Napier grass does.

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Intergenerational reproductive toxicity of chlordecone in male Caenorhabditis elegans

Abstract

Chlordecone (CLD), also named Kepone, is a synthetic organochlorine pesticide. As one of the common persistent organic pollutants (POPs) in nature, CLD has a profound impact on the environment and human health. The study aims to investigate the reproductive toxicity effects of CLD on male Caenorhabditis elegans and on progeny. L1-stage male nematodes were exposed to the control group (M9 solution) and four dose groups (0.02, 0.2, 2, and 20 μg/L). After exposure for 48 h, the male nematodes were picked to mating experiment and progeny experiment that the number of progeny and the time of observation in male parent and in F1 generation were counted; the number of germ cells and the number of sperm in the meiotic division of male nematodes were counted by staining with dimercaptophenyl hydrazine (DAPI), and the nematode gland area was observed under the bright field of the microscope. In male nematodes, the results showed that a number of progeny were 351.20 ± 31.40, 321.60 ± 24.70, 307.30 ± 19.30, 240.10 ± 27.60, and 227.90 ± 22.70 (P < 0.05); the generation times were 55.80 ± 1.95 h, 56.40 ± 1.60 h, 56.70 ± 0.92 h, 60.80 ± 0.95 h, and 69.60 ± 1.97 h (P < 0.05); relative areas of gonad were (99.80 ± 6.27)%, (93.00 ± 1.70)%, (85.00 ± 1.70)%, (70.70 ± 9.81)%, and (60.00 ± 5.23)% (P < 0.05); DAPI staining results showed the number of germ cells in meiosis area were 191.00 ± 10.97, 181.10 ± 15.56, 177.00 ± 9.20, 147.50 ± 10.56, and 139.30 ± 23.79 (P < 0.05); the sperm numbers were 335.60 ± 21.31, 308.60 ± 19.60, 306.00 ± 11.23, 260.10 ± 27.41, and 255.00 ± 3.72 (P < 0.05). In the F1 generation, the progeny numbers were 328.10 ± 22.28, 167.50 ± 15.30, 150.00 ± 13.65, 131.30 ± 18.40, and 130.20 ± 16.17 (P < 0.05); the generation times were 55.50 ± 2.36, 71.10 ± 0.97, 70.90 ± 0.52, 74.10 ± 2.07, and 73.90 ± 1.35 h (P < 0.05). The groups are grouped in order as M9 solution, 0.02, 0.2, 2, and 20 μg/L. The results revealed that CLD caused decrease in progeny number, relative area of gonad, number of germ cells, and sperm number and prolonged the generation time in the male nematode. In offspring grown up without CLD, the effect of CLD on generation time and sperm number can still be observed on offspring. In conclusion, CLD induces male nematode reproductive toxicity and causes defects in offspring.

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