Kent State University

About: Kent State University is a education organization based out in Kent, Ohio, United States. It is known for research contribution in the topics: Liquid crystal & Population. The organization has 10897 authors who have published 24607 publications receiving 720309 citations. The organization is also known as: Kent State & KSU.

Molecular-based design and emerging applications of nanoporous carbon spheres

Abstract: Over the past decade, considerable progress has been made in the synthesis and applications of nanoporous carbon spheres ranging in size from nanometres to micrometres. This Review presents the primary techniques for preparing nanoporous carbon spheres and the seminal research that has inspired their development, presented potential applications and uncovered future challenges. First we provide an overview of the synthesis techniques, including the Stober method and those based on templating, self-assembly, emulsion and hydrothermal carbonization, with special emphasis on the design and functionalization of nanoporous carbon spheres at the molecular level. Next, we cover the key applications of these spheres, including adsorption, catalysis, separation, energy storage and biomedicine — all of which might benefit from the regular geometry, good liquidity, tunable porosity and controllable particle-size distribution offered by nanoporous carbon spheres. Finally, we present the current challenges and opportunities in the development and commercial applications of nanoporous carbon spheres.

High‐Performance Sodium Ion Batteries Based on a 3D Anode from Nitrogen‐Doped Graphene Foams

Abstract: A 3D N-doped graphene foam with a 6.8 at% nitrogen content is prepared by annealing a freeze-dried graphene oxide foam in ammonia. It is used as an anode in sodium ion batteries to deliver a high initial reversible capacity of 852.6 mA h g(-1) at 1 C between 0.02 and 3 V with a long-term retention of 69.7% after 150 cycles.

Conservation of resources: A general stress theory applied to burnout.

Abstract: This chapter outlines a general theory of stress termed conservation of resources (COR). It provides an overarching framework to understand the nature of stress as a human phenomenon that is tied to people's experience regardless of the setting or context, be it work, home, hunt, or vacation. COR theory is a basic motivational theory and it is postulated that when this basic motivation is threatened or denied, stress ensues. It may be applied as a theoretical model that explains the etiology of burnout and the processes that are likely to accompany chronic, relatively low-level, work-related stress. COR theory proposes that loss is primary, but let us consider some of the other leading approaches. It suggests that intervention should be based on enhancing resources and eliminating vulnerability to resource loss. A cognitive approach to stress management might act to enhance people's sense of personality hardiness.

Heteroatom-Doped Graphene-Based Materials for Energy-Relevant Electrocatalytic Processes

Abstract: To address aggravating energy and environment issues, inexpensive, highly active, and durable electrocatalysts as noble metal substitutes both at the anode and cathode are being actively pursued. Among them, heteroatom-doped graphene-based materials show extraordinary electrocatalytic performance, some even close to or outperforming the state-of-the-art noble metals, such as Pt- and IrO2-based materials. This review provides a concise appraisal on graphene doping methods, possible doping configurations and their unique electrochemical properties, including single and double doping with N, B, S, and P. In addition, heteroatom-doped graphene-based materials are reviewed as electrocatalysts for oxygen reduction, hydrogen evolution, and oxygen evolution reactions in terms of their electrocatalytic mechanisms and performance. Significantly, three-dimensional heteroatom-doped graphene structures have been discussed, and those especially can be directly utilized as catalyst electrodes without extra binders and s...

The Effects of E-Government on Trust and Confidence in Government

Abstract: Trust in government has been declining for more than three decades now E-government has been proposed as a way to increase citizen trust in government and improve citizen evaluations of government generally Using two-stage models to analyze recent Pew survey data, this research explores the relationship between e-government use, attitudes about e-government, and trust in government There is a statistically significant relationship between trust and use of a local government Web site, as well as other positive assessments of federal and local governments The evidence suggests that e-government can increase process-based trust by improving interactions with citizens and perceptions of responsiveness The findings are theoretically important for reconciling the conflicting research on the effects of e-government and for understanding variations by level of government Citizen attitudes toward government, including trust, are core concerns for democratic governance and public administration