70,000 March in Brussels to Demand Climate Action

Guest essay by Eric Worrall A message to French Yellow Vests that greens and EU supporters can field large groups of demonstrators. But half the pro-climate action marchers were school children. 70,000 March to Demand Belgium, EU Increase Efforts to Fight Climate Change By RAF CASERT / AP January 27, 2019 (BRUSSELS) — At least…

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The Southern Ocean / Hemisphere Problem

Some perspective on the Southern Ocean view of the world. Continue reading →

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Ingestion of plastic fragments by the Guri sea catfish Genidens genidens (Cuvier, 1829) in a subtropical coastal estuarine system

Abstract

One of the most recognized anthropogenic impacts in marine environments is solid waste pollution, especially plastic, which can be ingested by fish, thus interfering with their health. In this context, the aim of this study is to describe the ingestion of plastic fragments and to identify the possible effect of this contamination in the condition factor of Genidens genidens in the Laguna Estuarine System. The stomach contents of 92 G. genidens (26 juveniles and 66 adults) were analyzed. The Index of Relative Importance was performed to identify the contribution of each prey item. Condition factor (CF) was used to analyze the effect of plastic ingestion on the fish's body condition (by comparing individuals in the same ontogenetic phase). For the juveniles, eight items were observed, the most important of which were Penaeidae, followed by Portunidae and plastic. For the adults, 12 items were observed, the most important of which were Penaeidae, Portunidae, Polychaeta, and plastic. The analysis of CF demonstrated higher values for individuals without plastic in the stomach, which indicated a better health condition. The CF of a fish may be affected by variations in the physiological condition, environmental stresses, and nutritional and biological variations, and could be used to compare the body condition or health of a fish species. The ingestion of plastic could significantly influence the worst body condition of the individuals that were analyzed in the present study. The plastic pollution in marine coastal waters is associated with the appropriate waste management levels.

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Mathematical modeling illusions

The global climate scare – and policies resulting from it – are based on models that do not work Dr. Jay Lehr and Tom Harris For the past three decades, human-caused global warming alarmists have tried to frighten the public with stories of doom and gloom. They tell us the end of the world as…

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‘Just a slogan’: 2020 Democrat Presidential Hopefuls hesitate to define ‘Green New Deal’ meaning – Will not commit specific policy proposals

Hopefuls hesitate to define 'Green New Deal' meaning… https://wapo.st/2DFOJzR

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Trimethine cyanine dyes as deep-red fluorescent indicators with high selectivity to the internal loop of the bacterial A-site RNA

Chem. Commun., 2019, Accepted Manuscript
DOI: 10.1039/C9CC00414A, Communication

Yusuke Sato, Sayaka Yajima, Akifumi Taguchi, Kyosuke Baba, Mayu Nakagomi, Yuri Aiba, Seiichi Nishizawa
We report that TO-PRO-3, a thiazole orange analogue with a trimethine bridge, functions as a deep-red fluorescenct indicator for the internal loop structure of the bacterial (Escherichia coli) ribosomal decoding...
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Tuning the reduction potential of quinones by controlling the effects of hydrogen bonding, protonation and proton-coupled electron transfer reactions

Chem. Commun., 2019, Accepted Manuscript
DOI: 10.1039/C8CC09188A, Communication

Raymond Shi, Malcolm Eugene Tessensohn, Sherman J L Lauw, Nicolette Foo, Richard D Webster
An all-organic cell comprised of 2,3-dimethyl-1,4-napthoquinone and pyrano[3,2-f]chromene as electroactive elements exhibited a good combination of large cell voltage and stability of the reduced quinone upon the addition of diethyl...
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Unlocking High-Potential Non-Persistent Radical Chemistry for Semi-Aqueous Redox Batteries

Chem. Commun., 2019, Accepted Manuscript
DOI: 10.1039/C8CC09304K, Communication

Yuheng Tian, Kuang-Hsu Wu, Liuyue Cao, Wibawa Hendra Saputera, Rose Amal, Dawei Wang
A non-persistent radical precursor, N-hydroxyphthalimide (NHPI), is reported as a low-cost, high-potential organic cathode in a binary electrolyte for a semi-aqueous redox battery. A highly reversible NHPI-phthalimide N-oxyl (PINO) radical...
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Dual stimuli-responsive bispillar[5]arene-based nanoparticles for precisely selective drug delivery in cancer cells

Chem. Commun., 2019, Accepted Manuscript
DOI: 10.1039/C8CC09432B, Communication

Qian Cheng, Kun-Xu Teng, Yuanfu Ding, Ludan Yue, Qing-Zheng Yang, Ruibing Wang
Paclitaxel-loaded nanoparticles based on a bispillar[5]arene compound were successfully developed using microemulsion method for the first time. The nanoparticles exhibited dual stimuli-responsiveness towards both spermine and glutathione, allowing precisely selective...
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Dissemination of resistance genes in duck/fish polyculture ponds in Guangdong Province: correlations between Cu and Zn and antibiotic resistance genes

Abstract

Duck/fish polyculture farming is a typical farming model in the Pearl River delta in southern China. We examined soil, water, and sediment samples from three duck-fish farms in Guangdong Province in September and December 2014. We determined the abundance of three metal resistance genes, 16S rDNA, and 23 antibiotic resistance genes encoding resistance to tetracycline, sulfonamides, quinolones, chloramphenicol, and β-lactamases. Microbial community structure was quantified by Illumina high-throughput sequencing of 16S rDNA genes. We found a prevalence of antibiotic resistance genes and the sul1, sul2, tetA, tetM, aac(6′)-Ib, and floR genes were the most abundant. Levels of Cu and Zn were significantly correlated with numerous ARG types and sul2, floR, and tetM were identified as potential antibiotic resistance gene indicators. Cu levels were significantly and positively correlated with the relative abundance of sul3, tetT, tetW, qnrB, qnrS, fexB, sul1, sul2, tetM, and qnrA. Zn was significantly correlated to relative abundance of sul2, sul3, tetM, tetA, tetT, tetW, qnrA, qnrB, qnrS, aac(6′)-Ib, qepA, bla_SHV, cmlA, floR, fexA, cfr, and fexB. The levels of Acinetobacter, Brevibacillus, and Wautersiella showed significant positive correlations with metal resistance genes as well as qnrB, oqxA, oqxB, and bla_SHV (p > 0.8). Sphingobacterium, Flavobacterium, Acidothermus, and Corynebacterium had significant correlations with abundance of tetracycline resistance genes, sulfonamide resistance genes, bla_TEM, bla_CTX, and cfr (p > 0.8). Sphingobacterium, Flavobacterium, Acidothermus, and Corynebacterium were most abundant in soil samples while Acinetobacter, Brevibacillus, and Wautersiella were most abundant in water samples. Dissemination of antibiotic resistance genes in aquaculture environments is extensive and tracing their origins is necessary to establish risk assessment methods required for aquatic environmental protection.

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Electrokinetic remediation of antibiotic-polluted soil with different concentrations of tetracyclines

Abstract

This study investigated the efficacy of electrokinetic remediation of soils polluted with different concentrations of tetracyclines (TCs). Three widely used TCs (oxytetracycline, chlortetracycline, and tetracycline) were selected, and concentrations of 0, 5, 10, 20, and 50 mg/kg (C0, C5, C10, C20, C50) were selected for comparison. Antibiotic-polluted soils with no electric field served as controls. The average removal rates of TCs in different treatments ranged from 25 to 48% after 7-day remediation. The contributing ratios of electrokinetics to TCs removal varied from 22 to 84%. The concentrations of NH₄⁺ increased in soils and electrolytes, which indicated the decomposition of TCs in the electric field. The highest removal amount of TCs was obtained in the C50 treatment, due to efficient reactions of TCs with oxidative radicals generated during the electrolysis. The fluctuant range of pH in the electrolytes was decreased with increasing concentration of TCs, while the soil pH was increased. The removal rate of antibiotic-resistant bacteria (ARB) in the C5 treatment was significantly higher than that in other treatments. The abundance of antibiotic resistance genes (ARGs) increased with the concentrations of TCs in soils. It might result from the induction of increasing selective pressure of antibiotics. Significant removal of ARGs occurred in the C50 treatment (38–60%). In terms of controlling ARB and ARGs, which were more resistant, the electrokinetic technology showed advantageous effects. Above all, electrokinetic technology provides an effective remediation method, especially for TC-polluted soil with a concentration of 20–50 mg/kg.

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Planned German coal exit boosts case for Nord Stream 2

From euobserver Anti-coal protest in Germany in June 2018, days ahead of the coal commission's first meeting. The commission published its report over the weekend (Photo: mw238) By Peter Teffer Brussels, 28. Jan, 09:24 Germany should gradually close down its coal-fired power plants by 2038, an advisory commission has said in its final report, published…

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Epic fail of renewables causes Texas town to have $1200 per year higher power bills

Average yearly homeowner electric bill increase is $1219 Above: Dale Ross in 2017 when the green dream hadn't yet turned to a nightmare. From Georgetown View. The following opinion piece is from Chuck DeVore, a friend of WUWT: Texas town's environmental narcissism makes Al Gore happy while sticking its citizens with the bill By Chuck DeVore…

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Improved Synthesis of β-Ketoenamine-Linked Covalent Organic Frameworks via Monomer Exchange Reactions

Chem. Commun., 2019, Accepted Manuscript
DOI: 10.1039/C8CC08957D, Communication

Michael C. Daugherty, Edon Vitaku, Rebecca L. Li, Austin M. Evans, Anton Chavez, William Dichtel
β-ketoenamine-linked covalent organic frameworks (COFs) offer excellent structural versatility and outstanding aqueous stability, but their stability complicates obtaining samples with high crystallinity and surface areas. In contrast, imine-linked COFs are...
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Governor Grisham Powers Up New Mexico's EV Market

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[ASAP] Asymmetric Transfer Hydrogenation with a Bifunctional Iron(II) Hydride: Experiment Meets Computation

Journal of the American Chemical Society

DOI: 10.1021/jacs.8b12506

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[ASAP] Mechanism of the Manganese-Pincer-Catalyzed Acceptorless Dehydrogenative Coupling of Nitriles and Alcohols

Journal of the American Chemical Society

DOI: 10.1021/jacs.8b11308

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[ASAP] Mild Covalent Functionalization of Transition Metal Dichalcogenides with Maleimides: A “Click” Reaction for 2H-MoS2 and WS2

Journal of the American Chemical Society

DOI: 10.1021/jacs.8b10930

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[ASAP] Predicting Site-Binding Modes of Ions and Water to Nucleic Acids Using Molecular Solvation Theory

Journal of the American Chemical Society

DOI: 10.1021/jacs.8b11474

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[ASAP] Model Anionic Block Copolymer Vesicles Provide Important Design Rules for Efficient Nanoparticle Occlusion within Calcite

Journal of the American Chemical Society

DOI: 10.1021/jacs.8b12507

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[ASAP] Coarse-Grained Simulation of CaCO3 Aggregation and Crystallization Made Possible by Nonbonded Three-Body Interactions

The Journal of Physical Chemistry C

DOI: 10.1021/acs.jpcc.8b09604

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[ASAP] Combined Computational and Experimental Study on the Influence of Surface Chemistry of Carbon-Based Electrodes on Electrode–Electrolyte Interactions in Supercapacitors

The Journal of Physical Chemistry C

DOI: 10.1021/acs.jpcc.8b07617

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[ASAP] Pt Monolayer Creation on a Au Surface via an Underpotentially Deposited Cu Route

The Journal of Physical Chemistry C

DOI: 10.1021/acs.jpcc.8b09531

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[ASAP] Probing Local Structural Changes at Cu2+ in a Flexible Mixed-Metal Metal-Organic Framework by Electron Paramagnetic Resonance during CO2 Ad- and Desorption

The Journal of Physical Chemistry C

DOI: 10.1021/acs.jpcc.8b10661

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[ASAP] Systematic Control of the Overlapping Energy Region for an Efficient Intramolecular Energy Transfer: Functionalized Salen–Al/Triphenylamine Guest–Host Assemblies

Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.8b03005

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[ASAP] Magnetic Properties of Co(II) Complexes with Polyhedral Carborane Ligands

Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.8b03156

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[ASAP] Correction to and Study of Cubic La0.5Ba0.5CoO3-d to Double Perovskite LaBaCo2O6-d Transition and Formation of Domain Textured Phases with Fast Oxygen Exchange Capability

Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.8b03614

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[ASAP] Understanding High Anisotropic Magnetism by Ultrathin Shell Layer Formation for Magnetically Hard–Soft Core–Shell Nanostructures

Chemistry of Materials

DOI: 10.1021/acs.chemmater.8b03591

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[ASAP] Finding the Right Bricks for Molecular Legos: A Data Mining Approach to Organic Semiconductor Design

Chemistry of Materials

DOI: 10.1021/acs.chemmater.8b04436

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