Louisiana State University

About: Louisiana State University is a education organization based out in Baton Rouge, Louisiana, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 40206 authors who have published 76587 publications receiving 2566076 citations. The organization is also known as: LSU & Louisiana State University and Agricultural and Mechanical College.

Conducting Polyaniline Nanowire and Its Applications in Chemiresistive Sensing

Abstract: One dimensional polyaniline nanowire is an electrically conducting polymer that can be used as an active layer for sensors whose conductivity change can be used to detect chemical or biological species. In this review, the basic properties of polyaniline nanowires including chemical structures, redox chemistry, and method of synthesis are discussed. A comprehensive literature survey on chemiresistive/conductometric sensors based on polyaniline nanowires is presented and recent developments in polyaniline nanowire-based sensors are summarized. Finally, the current limitations and the future prospect of polyaniline nanowires are discussed.

The domino effect of password reuse

Abstract: One weak spot is all it takes to open secured digital doors and online accounts causing untold damage and consequences.

An upper limit on the stochastic gravitational-wave background of cosmological origin

Abstract: A stochastic background of gravitational waves is expected to arise from a superposition of a large number of unresolved gravitational-wave sources of astrophysical and cosmological origin. It should carry unique signatures from the earliest epochs in the evolution of the Universe, inaccessible to standard astrophysical observations. Direct measurements of the amplitude of this background are therefore of fundamental importance for understanding the evolution of the Universe when it was younger than one minute. Here we report limits on the amplitude of the stochastic gravitational-wave background using the data from a two-year science run of the Laser Interferometer Gravitational-wave Observatory (LIGO). Our result constrains the energy density of the stochastic gravitational-wave background normalized by the critical energy density of the Universe, in the frequency band around 100 Hz, to be <6.9 times 10-6 at 95% confidence. The data rule out models of early Universe evolution with relatively large equation-of-state parameter, as well as cosmic (super)string models with relatively small string tension that are favoured in some string theory models. This search for the stochastic background improves on the indirect limits from Big Bang nucleosynthesis and cosmic microwave background at 100 Hz.

High-temperature weak ferromagnetism in a low-density free-electron gas

Abstract: The magnetic properties of the ground state of a low-density free-electron gas in three dimensions have been the subject of theoretical speculation and controversy for seven decades. Not only is this a difficult theoretical problem to solve, it is also a problem which has not hitherto been directly addressed experimentally. Here we report measurements on electron-doped calcium hexaboride (CaB6) which, we argue, show that-at a density of 7× 1019 electrons cm-3-the ground state is ferromagnetically polarized with a saturation moment of 0.07 µB per electron. Surprisingly, the magnetic ordering temperature of this itinerant ferromagnet is 600 K, of the order of the Fermi temperature of the electron gas.

Role Stress, Work-Family Conflict and Emotional Exhaustion: Inter-Relationships and Effects on Some Work-Related Consequences

Abstract: Recent research demonstrates that attitudes toward the workplace are influenced by both work and non-work domains. This study examines the inter-relationships of role conflict, role ambiguity, work-family conflict, emotional exhaustion, job satisfaction and propensity to leave in a sales environment. Results indicate that: role conflict is significantly related to emotional exhaustion; work-family conflict is significantly related to both emotional exhaustion and job satisfaction; and, that emotional exhaustion and job satisfaction are related to salesperson propensity to leave. These results support other research indicating the conflict between the work and home domains is highly related to important workplace attitudes and perceptions and suggests that work-family conflict should be included in models examining employee response to the effects of stress.