Results 41 to 50 of about 43,733 (300)

Putting the Warp into Warp Drive

, 2008
Over the last decade, there has been a respectable level of scientific interest regarding the concept of a warp drive. This is a hypothetical propulsion device that could theoretically circumvent the traditional limitations of special relativity which restricts spacecraft to sub-light velocities. Any breakthrough in this field would revolutionize space
Obousy, Richard K, Cleaver, Gerald
openaire   +2 more sources

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

Molecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix, Daniel Samaga, Katharina Gehr, Benedek Dankó, Mohamed Schumann, Guido Drexler, Ahmed Alnatsha, Georg Beyer, Ujjwal Mahajan, Martin Selmansberger, Julia Mayerle, Claus Belka, Horst Zitzelsberger, Kirsten Lauber   +13 more
wiley   +1 more source

Dynamics of the warp beam brake drive on a weaving loom for the production of natural silk fabrics [PDF]

E3S Web of Conferences
In the process of producing silk fabrics, by the fact of the high elastic properties of the threads large relaxation oscillations occur in the weaving system of the loom.
Rakhimhodjaev Saidvoris, Tashpulatov Salikh, Sobirova Gulfiya, Rajapova Marguba, Tyurin Igor   +4 more
doaj   +1 more source

A `warp drive' with more reasonable total energy requirements

, 1999
I show how a minor modification of the Alcubierre geometry can dramatically improve the total energy requirements for a `warp bubble' that can be used to transport macroscopic objects.
Alcubierre M, Chris Van Den Broeck, Coule D H, Ford L H, Visser M   +4 more
core   +1 more source

The Warped Nuclear Disk of Radio Galaxy 3C 449 [PDF]

, 2005
Among radio galaxies containing nuclear dust disks, the bipolar jet axis is generally observed to be perpendicular to the disk major axis. The FR I radio source 3C 449 is an outlier to this statistical majority, as it possesses a nearly parallel jet/disk
Axon, David, Baum, Stefi A., Capetti, Alessandro, Chiaberge, Marco, Floyd, David J. E., Macchetto, F. Duccio, Madrid, Juan P., Miley, George K., Noel-Storr, Jacob, O'Dea, Christopher P., Perlman, Eric, Quillen, Alice C., Sparks, William B., Tremblay, Grant R.   +13 more
core   +1 more source

RaMBat: Accurate identification of medulloblastoma subtypes from diverse data sources with severe batch effects

Molecular Oncology, EarlyView.
To integrate multiple transcriptomics data with severe batch effects for identifying MB subtypes, we developed a novel and accurate computational method named RaMBat, which leveraged subtype‐specific gene expression ranking information instead of absolute gene expression levels to address batch effects of diverse data sources.
Mengtao Sun, Jieqiong Wang, Shibiao Wan
wiley   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Matching the Alcubierre and Minkowski spacetimes

European Physical Journal C: Particles and Fields
This work analyzes the Darmois junction conditions matching an interior Alcubierre warp drive spacetime to an exterior Minkowski geometry. The joining hypersurface requires that the shift vector of the warp drive spacetime satisfy the solution of a ...
Osvaldo L. Santos-Pereira, Everton M. C. Abreu, Marcelo B. Ribeiro   +2 more
doaj   +1 more source

On Restrictions of Current Warp Drive Spacetimes and Immediate Possibilities of Improvement

Universe
Looking at current proposals of so-called ‘warp drive spacetimes’, they appear to employ General Relativity only at an elementary level. A number of strong restrictions are imposed such as flow-orthogonality of the spacetime foliation, vanishing spatial ...
Hamed Barzegar, Thomas Buchert
doaj   +1 more source

CSF Levels of NPTX2 Are Associated With Less Brain Atrophy Over Time in Cognitively Unimpaired Individuals

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Neuronal pentraxin 2 (NPTX2) is a synaptic protein involved in synaptic plasticity and regulation of neuronal excitability. Lower baseline cerebrospinal fluid (CSF) NPTX2 levels have been shown to be associated with an earlier onset of mild cognitive impairment (MCI), a pre‐dementia syndrome, even after CSF Alzheimer's Disease (AD)
Juan P. Vazquez, Corinne Pettigrew, Yuxin Zhu, Claire Anderson, Guray Erus, Christos Davatzikos, Michael Miller, Abhay Moghekar, Sungtaek Oh, Chan‐Hyun Na, Marilyn Albert, Paul Worley, Anja Soldan   +12 more
wiley   +1 more source