Results 91 to 100 of about 4,323,638 (342)

Long-Term Contracts and Asset Specificity Revisited –An Empirical Analysis of Producer-Importer Relations in the Natural Gas Industry

, 2006
In this paper, we analyze structural changes in long-term contracts in the international trade of natural gas. Using a unique data set of 262 long-term contracts between natural gas producers and importers, we estimate the impact of different ...
von Hirschhausen, Christian R., Hirschhausen, Christian von, Neumann, Anne   +2 more
core   +1 more source

Overall computing offloading strategy based on deep reinforcement learning in vehicle fog computing

The Journal of Engineering, 2020
In order to solve the problem of network congestion caused by a large number of data requests generated by intelligent vehicles in LTE-V network, a brand-new fog server with fog computing function is deployed on both the cellular base stations and ...
HaiZhong Tan, Limin Zhu
doaj   +1 more source

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

FEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara, Kinga Skoczek, Elzbieta Pyza, Milena Damulewicz   +3 more
wiley   +1 more source

Selection of a highly invasive neuroblastoma cell population through long-term human cytomegalovirus infection. [PDF]

, 2012
The human cytomegalovirus (HCMV) is suspected to increase tumour malignancy by infection of cancer and/or stroma cells (oncomodulation). So far, oncomodulatory mechanisms have been attributed to the presence of HCMV and direct action of its gene products
Hackmann, K.,, Steinberger, D., Griffin, D.K., Breitling, Rainer, Barth, Susanne, Griffin, D.K.,, Breitling, R., Cinatl, J., Doerr, Hans Wilhelm, Rothweiler, Florian, Steinberger, D, Michaelis, M.,, Cinatl, J.,, Hackmann, Karl, Rothweiler, F., Schröck, E, Breitling, R.,, Cinatl Jr., J.,, Schröck, Evelin, Hackmann, K., Michaelis, Martin, Cinatl, Jindrich, Bruch, J., Bruch, J.,, Schröck, E., Doerr, H. W., Hackmann, K, Steinberger, Daniela, Barth, S., Cinatl Jr., J., Griffin, D. K., Doerr, H.W.,, Rothweiler, F.,, Michaelis, M., Bruch, James C., Cinatl, Jaroslav, Doerr, H.W., Bruch, Jochen, Steinberger, D.,, Griffin, Darren K., Schröck, E.,, Barth, S.,   +41 more
core   +1 more source

LONG TERM EVOLUTION OF BONE RECONSTRUCTION WITH BONE GRAFT SUBSTITUTES

Journal of V. N. Karazin Kharkiv National University: Series Medicine, 2017
The review involves clinical and experimental data, constitutive modeling, and computational investigations towards an understanding on how mechanical cyclic loads for long periods of time affect damage evolution in a reconstructed bone, as well as ...
O. V. Martynenko, O. O. Zolochevsky, R. Allena   +2 more
doaj  

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

Long-Term Virus Evolution in Nature

, 2016
Viruses spread to give rise to epidemics and pandemics, and some key parameters that include virus and host population numbers determine virus persistence or extinction in nature. Viruses evolve at different rates of evolution depending on the polymerase copying fidelity during genome replication.
openaire   +1 more source

Portfolio Optimization and Long-Term Dependence [PDF]

Whilst emphasis has been given to short-term dependence of financial returns, long-term dependence remains overlooked. Despite financial literature provides evidence of long-term’s memory existence, serial-independence assumption prevails.
Carlos León, Alejandro Reveiz
core  

On the Anthropogenic Impact on Long‐Term Evolution of Noctilucent Clouds

Geophysical Research Letters, 2018
Little is known about climate change effects in the transition region between the Earth's atmosphere and space, roughly at 80–120 km. Some of the earliest observations in this region come from noctilucent clouds (NLC) at ∼83‐km altitude.
F. Lübken, U. Berger, G. Baumgarten
semanticscholar   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source