University of South Carolina

About: University of South Carolina is a education organization based out in Columbia, South Carolina, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 25792 authors who have published 59995 publications receiving 2246122 citations. The organization is also known as: USC & U.S.C..

The Evolving Definition of Sedentary

Abstract: Studies that did not directly measure sedentary behavior often have been used to draw conclusions about the health effects of sedentariness. Future claims about the effects of sedentary, light, and moderate-to-vigorous activities on health outcomes should be supported by data from studies in which all levels of physical activity are differentiated clearly and measured independently.

Microbial production of recalcitrant dissolved organic matter: long-term carbon storage in the global ocean.

Abstract: The biological pump is a process whereby CO(2) in the upper ocean is fixed by primary producers and transported to the deep ocean as sinking biogenic particles or as dissolved organic matter. The fate of most of this exported material is remineralization to CO(2), which accumulates in deep waters until it is eventually ventilated again at the sea surface. However, a proportion of the fixed carbon is not mineralized but is instead stored for millennia as recalcitrant dissolved organic matter. The processes and mechanisms involved in the generation of this large carbon reservoir are poorly understood. Here, we propose the microbial carbon pump as a conceptual framework to address this important, multifaceted biogeochemical problem.

Controlling the aspect ratio of inorganic nanorods and nanowires

Abstract: Semiconductors and metals exhibit unusual optical, electronic, and magnetic properties on the nanometer scale. Chemists and materials scientists are developing methods to make non-spherical shapes of semiconductors and metals on the nanometer scale. We use a seed-mediated growth approach to make metallic nanorods and nanowires in homogeneous solution. Control of the ratio of metallic spherical seeds to metal salt in the reduction reaction contyrols the aspect ratio of the resulting rods and wires.

Transforming disadvantages into advantages: developing-country MNEs in the least developed countries

Abstract: We analyze the advantages and disadvantages of developing-country multinational enterprises (MNEs) in comparison with developed-country MNEs. Developing-country MNEs tend to be less competitive than their developed-country counterparts, partly because they suffer the disadvantage of operating in home countries with underdeveloped institutions. We argue that this disadvantage can become an advantage when both types of MNE operate in countries with “difficult” governance conditions, because developing-country MNEs are used to operating in such conditions. The empirical analysis shows that, although developing-country MNEs rarely appear among the largest MNEs in the world, they are more prevalent among the largest foreign firms in the least developed countries (LDCs), especially in LDCs with poorer regulatory quality and lower control of corruption.