Results 11 to 20 of about 9,923 (166)

Modulating Ion-Dipole and Dipole-Dipole Interactions for Stable Wide-Temperature-Range Lithium-Sulfur Batteries Enabled by Quantum-Dot Catalysts. [PDF]

Angew Chem Int Ed Engl
The electrochemical inertness of Li2S2 leads to irreversible sulfur loss. MoNQDs/NC reconfigure the solvation shell structure, thereby weakening the ion‐dipole effect within Li(solvent)x+ and enabling a fast desolvation process. Furthermore, localized dipole fields from their ordered Mo–N atoms enhance dipole–dipole interactions with Li2S2.
He Y, Xiong D, Chen M, Zhang W, Liu S, Ye Y, Wang M, Chen Y, Tang Q, Peng X, Wang C, Zhan H, Liu H, Liu M, Su J, Shu H, Wang J, Wang X.   +17 more
europepmc   +3 more sources

Enhancing Bidirectional Sulfur Conversion Through p-d Orbital Hybridization via Vacancy Engineering. [PDF]

Exploration (Beijing)
To effectively alleviate the severe shuttle effect and delayed redox kinetics of lithium–sulfur batteries, CoWO4−x/CNT composites with different oxygen vacancy concentrations were prepared. The p–d orbital hybridization caused by oxygen vacancy enhances the bidirectional sulfur conversion, and provides valuable insights for the development of highly ...
Chen Y, Li D, Chen Y, Wu X, Chen M, Du Y, Fu K, Yuan H, Wei S, Wang X, Shu H.   +10 more
europepmc   +2 more sources

Mason bees and honey bees synergistically enhance fruit set in sweet cherry orchards. [PDF]

Ecol Evol, 2023
We present data from our field experiment carried out in 17 cherry orchards in Central Germany. We found that the number of honey bees and mason bees can be enhanced through proving honey bees hives and artificial nesting material. However, sweet cherry fruit set only increased when both species were enhanced, suggesting a synergistic effect of bee ...
Osterman J, Benton F, Hellström S, Luderer-Pflimpfl M, Pöpel-Eisenbrandt AK, Wild BS, Theodorou P, Ulbricht C, Paxton RJ.   +8 more
europepmc   +2 more sources

Mapping maternity care deserts: Driving distance and health outcomes in North Carolina. [PDF]

J Rural Health
Abstract Objective This study evaluated the association between maternal care deserts (MCDs)—defined by accessibility measures such as travel time and distance to obstetric and gynecological care—and maternal and infant health outcomes in North Carolina from 2016 to 2021.
Sugg M, Shakya S, Ulrich S, Tyson JS, Runkle J.   +4 more
europepmc   +2 more sources

Screening and Identification of Diesel Biodegrading Bacteria Isolated From Petroleum Hydrocarbon Contaminated Garage Soils of Kericho County, Kenya. [PDF]

Int J Microbiol
Despite the benefits of petroleum hydrocarbon as essential raw energy sources in many industries, they cause major global environmental pollution. Petroleum hydrocarbons pollutants are highly toxic and recalcitrant, making them dangerous and persistent over long periods in an ecosystem.
Yegon Z, Wagacha JM, Nyaboga E, Chalo R, Wafula E.   +4 more
europepmc   +2 more sources

Determinants of International Tourism Demand in India: An Augmented Gravity Model Approach

Studia Universitatis Vasile Goldis Arad, Seria Stiinte Economice, 2022
This study examines the determinants of international tourism demand in India using time series data from 1991-2019 from the top 15 source tourist countries. To do this, the study employed an augmented gravity model estimated using a two-step panel fixed-
Shah Imtiyaz Ahmad, Nengroo Tariq Ahad, Haq Imtiyaz ul   +2 more
doaj   +1 more source

Assessment of Tourism-Led Growth Risks in Resource-Rich Countries: Evidence from Azerbaijan

ECONOMICS, 2023
The COVID-19 pandemic has provided important lessons in determining future development strategies for countries whose economies are largely dependent on natural resources.
Huseyn Arzu
doaj   +1 more source

Analysing public debt in the Mexican states: Spatial convergence, regional drivers and policy recommendations

Papers in Regional Science, Volume 102, Issue 4, Page 737-760, August 2023., 2023
Abstract Considering that public debt is a priority for policymakers in Mexico, the aim of this paper is to examine the convergence or divergence in debt per capita and main drivers of debt in the 32 Mexican states in the period 2006–2021. The results support significant spatial correlation of debt/cap across states.
Mihaela Simionescu, Javier Cifuentes‐Faura   +1 more
wiley   +1 more source

Innovative Tourism Products as Sustainable Solutions for Emerging Economies

ECONOMICS, 2023
The current trend in tourism is no longer one of relaxation in the two important seasons but of experiential tourism, developing of new types of tourism, each country identifying (but especially reinventing) its own potential and promoting it below the ...
Gabor Manuela Rozalia, Oltean Flavia Dana, Coca Andrei   +2 more
doaj   +1 more source

Normal edge-colorings of cubic graphs [PDF]

, 2019
A normal $k$-edge-coloring of a cubic graph is an edge-coloring with $k$ colors having the additional property that when looking at the set of colors assigned to any edge $e$ and the four edges adjacent it, we have either exactly five distinct colors or ...
Jaeger F., Jaeger F., Mkrtchyan V., Preissmann M., Schönberger T., Zhang C.‐Q.   +5 more
core   +2 more sources