Insight into the atomic structure of Li2MnO3 in Li-rich Mn-based cathode materials and the impact of its atomic arrangement on electrochemical performance

2017 ◽  
Vol 5 (22) ◽  
pp. 11214-11223 ◽  
Author(s):  
Yuanzhe Song ◽  
Xuebing Zhao ◽  
Chao Wang ◽  
Han Bi ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Crystal Lattice ◽  
Atomic Structure ◽  
Cathode Materials ◽  
Atomic Arrangement ◽  
Local Heterogeneity ◽  
The Impact ◽  
First Time ◽  
Insight Into

Local heterogeneity in crystal lattice is directly observed in synthesized Li2MnO3/LiMO2 (M = Ni, Mn) cathode materials. With SAED application, for the first time, we accordingly uncover that the lattice heterogeneity is induced by different Li2MnO3 atomic arrangements coexisting in same crystal domain.

On the impact of market mergers over herding: evidence from EURONEXT

2014 ◽  
Vol 6 (2) ◽  
pp. 104-135 ◽  
Author(s):  
Panagiotis Andrikopoulos ◽  
Andreas Albin Hoefer ◽  
Vasileios Kallinterakis
Keyword(s):  
Risk Factors ◽  
Design Methodology ◽  
Market Volatility ◽  
Herd Behavior ◽  
Content Type ◽  
Common Risk Factors ◽  
The Impact ◽  
First Time ◽  
European Equity ◽  
Insight Into

Purpose – The purpose of this paper is to present and empirically test for the first time the hypothesis that herding in a market increases following the market's merger in an exchange group. Design/methodology/approach – The hypothesis is tested empirically in EURONEXT's four European equity markets (Belgium, France, the Netherlands and Portugal) on the premise of the Hwang and Salmon (2004) measure which allows us insight into the significance, structure and evolution of market herding. Tests are conducted for each market for the period prior to and after its merger into EURONEXT, controlling for a series of variables (market conditions, common risk factors, size) to gauge the robustness of the findings. Findings – Results indicate that, with the exception of Portugal, herding grows in significance, yet declines in momentum post-merger. The authors ascribe the findings to EURONEXT's enhanced transparency (which makes it easier for investors to observe their peers’ trades, thus allowing them to infer and free-ride on their information) and its fast-moving informational dynamics that render herding movements shorter-lived. These results are robust when controlling for various market states and common risk factors, with deviations being observed when controlling for size and market volatility. Originality/value – The study presents results for the first time on the impact of exchange mergers on herd behavior. The authors believe these to constitute useful stimulus for further research on the issue and bear important implications for regulators/policymakers in view of the ongoing proliferation of exchange mergers that has been underway since the 1990s.

scholarly journals The impact of over 80 years of land cover changes on bee and wasp pollinator communities in England

2015 ◽  
Vol 282 (1806) ◽  
pp. 20150294 ◽  
Author(s):  
Deepa Senapathi ◽  
Luísa G. Carvalheiro ◽  
Jacobus C. Biesmeijer ◽  
Cassie-Ann Dodson ◽  
Rebecca L. Evans ◽  
...  
Keyword(s):  
Land Cover ◽  
Habitat Diversity ◽  
Land Cover Changes ◽  
Policy And Practice ◽  
Wasp Species ◽  
Key Drivers ◽  
And Shifts ◽  
The Impact ◽  
First Time ◽  
Insight Into

Change in land cover is thought to be one of the key drivers of pollinator declines, and yet there is a dearth of studies exploring the relationships between historical changes in land cover and shifts in pollinator communities. Here, we explore, for the first time, land cover changes in England over more than 80 years, and relate them to concurrent shifts in bee and wasp species richness and community composition. Using historical data from 14 sites across four counties, we quantify the key land cover changes within and around these sites and estimate the changes in richness and composition of pollinators. Land cover changes within sites, as well as changes within a 1 km radius outside the sites, have significant effects on richness and composition of bee and wasp species, with changes in edge habitats between major land classes also having a key influence. Our results highlight not just the land cover changes that may be detrimental to pollinator communities, but also provide an insight into how increases in habitat diversity may benefit species diversity, and could thus help inform policy and practice for future land management.

scholarly journals The impact of radical loading and oxidation on the conformation of organic radical polymers by small angle neutron scattering

2018 ◽  
Vol 6 (32) ◽  
pp. 15659-15667 ◽  
Author(s):  
Halie J. Martin ◽  
Barbara K. Hughes ◽  
Wade A. Braunecker ◽  
Thomas Gennett ◽  
Mark D. Dadmun
Keyword(s):  
Molecular Structure ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Organic Radical ◽  
The Impact ◽  
First Time ◽  
Insight Into

SANS provides, for the first time, unique insight into the correlation between organic radical polymer molecular structure and their assembly.

scholarly journals Utilization of the zebrafish model to unravel the harmful effects of biomass burning during Amazonian wildfires

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sanja Babić ◽  
Lara Čižmek ◽  
Aleksandra Maršavelski ◽  
Olga Malev ◽  
Maryline Pflieger ◽  
...  
Keyword(s):  
Lignin Degradation ◽  
Degradation Products ◽  
Aquatic Organisms ◽  
Zebrafish Model ◽  
Lignin Degradation Products ◽  
The Impact ◽  
First Time ◽  
Harmful Effects ◽  
By Products ◽  
Insight Into

AbstractAmazonian wildfires in 2019 have raised awareness about rainforest burning due to increased emissions of particulate matter and carbon. In the context of these emissions, by-products of lignin thermal degradation (i.e. methoxyphenols) are often neglected. Methoxyphenols entering the atmosphere may form intermediates with currently unknown reaction mechanisms and toxicity. This study for the first time provides a comprehensive insight into the impact of lignin degradation products [guaiacol, catechol], and their nitrated intermediates [4-nitrocatechol, 4,6-dinitroguaiacol, 5-nitroguaiacol] on zebrafish Danio rerio. Results revealed 4-nitrocatechol and catechol as the most toxic, followed by 4,6DNG > 5NG > GUA. The whole-organism bioassay integrated with molecular modeling emphasized the potential of methoxyphenols to inhibit tyrosinase, lipoxygenase, and carbonic anhydrase, consequently altering embryonic development (i.e. affected sensorial, skeletal, and physiological parameters, pigmentation formation failure, and non-hatching of larvae). The whole-organism bioassay integrated with in silico approach confirmed the harmful effects of lignin degradation products and their intermediates on aquatic organisms, emphasizing the need for their evaluation within ecotoxicity studies focused on aquatic compartments.

scholarly journals Charlotte Froese Fischer—Her Work and Her Impact

Atoms ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 107
Author(s):  
Alan Hibbert
Keyword(s):  
Atomic Structure ◽  
Large Scale ◽  
Computer Programs ◽  
Research Community ◽  
Structure Theory ◽  
90Th Birthday ◽  
The Impact ◽  
Insight Into

Charlotte Froese Fischer has been at the forefront of research in atomic structure theory for over 60 years. She has developed many of the methods currently used by researchers and has written associated computer programs which have been published and hence made accessible to the research community. Throughout her career, she has consistently encouraged and mentored young scientists, enabling them to embark on independent careers of their own. This article provides an overview of the methods and codes she has developed, some large-scale calculations she has undertaken, and some insight into the impact she has had on young scientists, and the leadership she continues to show as she reaches her 90th birthday.

MLi2Ti6O14 (M = Sr, Ba, and Pb): new cathode materials for magnesium–lithium hybrid batteries

2019 ◽  
Vol 48 (47) ◽  
pp. 17566-17571 ◽  
Author(s):  
Caixia Zhu ◽  
Yakun Tang ◽  
Lang Liu ◽  
Xiaohui Li ◽  
Yang Gao ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Cathode Materials ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
First Time

MLi2Ti6O14 (M = Sr, Ba, and Pb) were synthesized, for the first time, by a facile sol–gel method, followed by calcination and showed good electrochemical performance as cathodes for magnesium–lithium hybrid batteries.

Ridges and valleys on charged 1T-MoS2 sheets guiding the packing of organic cations

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19206-19212 ◽  
Author(s):  
Alexander S. Goloveshkin ◽  
Natalia D. Lenenko ◽  
Vladimir I. Zaikovskii ◽  
Alexandre S. Golub ◽  
Alexander A. Korlyukov ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Atomic Structure ◽  
Three Dimensional ◽  
Organic Cations ◽  
Layered Systems ◽  
First Time ◽  
Insight Into

The three-dimensional atomic structure of MoS2–organic layered systems is obtained for the first time, providing insight into the surface chemistry of charged MoS2 sheets.

scholarly journals Experimental quantification of the impact of heterogeneous mix on thermonuclear burn

2021 ◽  
Author(s):  
Brian Albright ◽  
Thomas Murphy ◽  
M Douglas ◽  
T Cardenas ◽  
James Cooley ◽  
...  
Keyword(s):  
Inertial Confinement Fusion ◽  
Inertial Confinement ◽  
National Ignition Facility ◽  
Fusion Reactions ◽  
Plastic Foam ◽  
Confinement Fusion ◽  
The Impact ◽  
First Time ◽  
Insight Into ◽  
Degree Of Heterogeneity

Abstract In inertial confinement fusion (ICF), deuterium-tritium (DT) fuel is brought to densities and temperatures where fusion ignition occurs. Mix of ablator material into the fuel may prevent ignition by diluting and cooling the fuel. MARBLE experiments at the National Ignition Facility (NIF) provide new insight into how mix affects thermonuclear burn. These experiments use laser-driven capsules containing deuterated plastic foam and tritium gas. Embedded within the foam are voids of known sizes and locations, which control the degree of heterogeneity of the fuel. Initially, the reactants are separated, with tritium concentrated in the voids and deuterium in the foam. During the implosion, mix occurs, leading to DT fusion reactions in the mixed region. Here we show that by measuring ratios of DT and deuterium-deuterium (DD) neutron yields for different macropore sizes and gas compositions, effects of mix heterogeneity on thermonuclear burn may be quantified and understood for the first time.

scholarly journals Investigation of the Impact of Cross-Polymerization on the Structural and Frictional Properties of Alkylsilane Monolayers Using Molecular Simulation

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 639 ◽  
Author(s):  
Jana E. Black ◽  
Andrew Z. Summers ◽  
Christopher R. Iacovella ◽  
Peter T. Cummings ◽  
Clare McCabe
Keyword(s):  
Amorphous Silica ◽  
Molecular Level ◽  
Level Structure ◽  
Fundamental Question ◽  
Silica Surfaces ◽  
Frictional Properties ◽  
Frictional Performance ◽  
The Impact ◽  
First Time ◽  
Insight Into

Cross-linked chemisorbed n-alkylsilane (CH3(CH2)n−1Si(OH)3) monolayers on amorphous silica surfaces have been studied and their structural properties and frictional performance were compared to those of equivalent monolayers without cross-linkages. The simulations isolated for the first time the effects of both siloxane cross-linkages and the fraction of chains chemisorbed to the surface, providing insight into a longstanding fundamental question in the literature regarding molecular-level structure. The results demonstrate that both cross-linkages and the fraction of chemisorbed chains affect monolayer structure in small but measurable ways, particularly for monolayers constructed from short chains; however, these changes do not appear to have a significant impact on frictional performance.

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