Results 21 to 30 of about 783,982 (246)

N-body simulations in modified Newtonian dynamics

, 2008
We describe some results obtained with N-MODY, a code for N-body simulations of collisionless stellar systems in modified Newtonian dynamics (MOND). We found that a few fundamental dynamical processes are profoundly different in MOND and in Newtonian ...
Barnes, Bekenstein, Brada, Brada, C. Nipoti, Ciotti, Ciotti, Djorgovski, Dressler, Faber, Felten, Kormendy, L. Ciotti, Milgrom, Milgrom, Nipoti, Nipoti, Nipoti, Nipoti, P. Londrillo, Sánchez-Salcedo, Tiret   +21 more
core   +1 more source

N-body simulations of the Magellanic Stream

, 2005
A suite of high-resolution N-body simulations of the Magellanic Clouds -- Milky Way system are presented and compared directly with newly available data from the HI Parkes All-Sky Survey (HIPASS).
Barnes, Bekki, Bekki, Binney, Brad K. Gibson, Brueck, Brüns, Daisuke Kawata, Dopita, Faber, Feast, Fich, Gardiner, Gardiner, Gardiner, Gibson, Hardy, Hashimoto, Hatzidimitriou, Ibata, Just, Kawata, Knebe, Kuijken, Lin, Lu, Maddison, Martin, Mastropietro, Mathewson, Mathewson, Moore, Muller, Murai, Murali, Philip, Philip, Putman, Putman, Recillas-Cruz, Schommer, Stanimirović, Stanimirović, Swaters, Tim W. Connors, Tully, Van Der Marel, Wakker, Wakker, Yoshizawa, Zhao   +50 more
core   +1 more source

N-body Simulations of Galaxy Formation [PDF]

Symposium - International Astronomical Union, 1988
Modern N-body techniques allow the study of galaxy formation in the wider context of the formation of large-scale structure in the Universe. The results of such a study within the cold dark matter cosmogony are described. Dark galactic halos form at relatively recent epochs.
openaire   +1 more source

Are long-term N-body simulations reliable? [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT N-body integrations are used to model a wide range of astrophysical dynamics, but they suffer from errors which make their orbits diverge exponentially in time from the correct orbits. Over long time-scales, their reliability needs to be established. We address this reliability by running a three-body planetary system over about
Junichiro Makino, Sam Hadden, David M Hernandez   +2 more
openaire   +2 more sources

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Growth of correlations in gravitational N-body simulations

, 2004
In the gravitational evolution of a cold infinite particle distribution, two-body interactions can be predominant at early times: we show that, by treating the simple case of a Poisson particle distribution in a static universe as an ensemble of isolated
Baertschiger, Thierry, Labini, Francesco Sylos   +1 more
core   +2 more sources

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Constructing Merger Trees that Mimic N-Body Simulations

, 2007
We present a simple and efficient empirical algorithm for constructing dark-matter halo merger trees that reproduce the distribution of trees in the Millennium cosmological $N$-body simulation. The generated trees are significantly better than EPS trees.
Amosov, Avishai Dekel, Bardeen, Benson, Birnboim, Bond, Bullock, Cole, Cole, Croton, Davis, Diemand, Eyal Neistein, Gao, Gottlöber, Governato, Harker, Hernquist, Kauffmann, Lacey, Lacey, Li, Mo, Navarro, Neistein, Neto, Prada, Press, Seljak, Sheth, Sheth, Somerville, Somerville, Springel, Springel, Van Den Bosch, Van Den Bosch, Wechsler, Zentner   +38 more
core   +1 more source

N-Body Simulations on GPUs

CoRR, 2007
Commercial graphics processors (GPUs) have high compute capacity at very low cost, which makes them attractive for general purpose scientific computing. In this paper we show how graphics processors can be used for N-body simulations to obtain improvements in performance over current generation CPUs.
Erich Elsen, Vaidyanathan Vishal, Mike Houston, Vijay S. Pande, Pat Hanrahan, Eric Darve   +5 more
openaire   +2 more sources

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

FEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman, Katarzyna Stapor, Leszek Konieczny, Krzysztof Gądek, Piotr Nowakowski   +4 more
wiley   +1 more source