Novel model for predicting individuals’ movements in dynamic regions of interest

AbstractWhilst lithopanspermia depends upon massive impacts occurring at a speed above some limit, the intact delivery of organic chemicals or other volatiles to a planet requires the impact speed to be below some other limit such that a significant fraction of that material escapes destruction. Thus the two opposite ends of the impact speed distributions are the regions of interest in the bioastronomical context, whereas much modelling work on impacts delivers, or makes use of, only the mean speed. Here the probability distributions of impact speeds upon Mars are calculated for (i) the orbital distribution of known asteroids; and (ii) the expected distribution of near-parabolic cometary orbits. It is found that cometary impacts are far more likely to eject rocks from Mars (over 99 percent of the cometary impacts are at speeds above 20 km/sec, but at most 5 percent of the asteroidal impacts); paradoxically, the objects impacting at speeds low enough to make organic/volatile survival possible (the asteroids) are those which are depleted in such species.

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Emergence of perianal fistulae and ulceration in a murine model of IBD: A novel model of perianal Crohn's disease (CD)

Gastroenterology ◽

10.1016/s0016-5085(01)80601-6 ◽

2001 ◽

Vol 120 (5) ◽

pp. A122-A122

Author(s):

S COHN ◽

A VIDRICH ◽

M SUMMY ◽

C MOSKALUK ◽

F COMINELLI

Keyword(s):

Crohn’S Disease ◽

Crohn's Disease ◽

Murine Model ◽

Perianal Crohn’S Disease ◽

Perianal Fistulae ◽

Novel Model ◽

Perianal Crohn's Disease

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630: A Novel Model System for the Treatment of Renal Cancer by Nonmyeloablative Allogeneic Hemopoietic Cell Transplantation Using Cyclophosphamide in Mice

The Journal of Urology ◽

10.1016/s0022-5347(18)34870-5 ◽

2005 ◽

Vol 173 (4S) ◽

pp. 172-172

Author(s):

Masatoshi Eto ◽

Masahiko Harano ◽

Katsunori Tatsugami ◽

Hirofumi Koga ◽

Seiji Naito

Keyword(s):

Cell Transplantation ◽

Renal Cancer ◽

Model System ◽

Hemopoietic Cell ◽

Novel Model

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A Novel Model for Separate Estimates for Explicit and Implicit Memory

PsycEXTRA Dataset ◽

10.1037/e502412013-173 ◽

2012 ◽

Author(s):

Richard A. Chechile ◽

Lara N. Sloboda ◽

Erin L. Warren ◽

Daniel H. Barch ◽

Jessica R. Chamberland

Keyword(s):

Implicit Memory ◽

Novel Model

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Determination of Myocardial FFA Elimination Rates by Functional Images of Uncorrected Half-Time Values

Nuklearmedizin ◽

10.1055/s-0038-1624257 ◽

1984 ◽

Vol 23 (06) ◽

pp. 277-282 ◽

Cited By ~ 1

Author(s):

A. Van Lingen ◽

G. Westera ◽

M. van ◽

W. Den Hollander ◽

E. E. Van der Wall ◽

...

Keyword(s):

Coronary Artery ◽

Regions Of Interest ◽

Heptadecanoic Acid ◽

Half Time ◽

Alternative Method ◽

Functional Images ◽

Functional Image ◽

Back Ground ◽

Objective Determination

SummaryThis paper presents an alternative method of demarcating regions of in terest over the myocardium after ad ministration of 123I-heptadecanoic acid to patients with coronary artery disea se. In a matrix of 32 × 32 pixels the elimination rates of the radioactivity, which are not corrected for back ground activity, are visualized per pixel in a functional image. The func tional image showed areas in the myocardium with high values of uncorrected elimination rates. These areas corresponded with the tracer defects on the scintigram. Corrected elimination rates obtained from re gions of interest of functional images were comparable with those of scinti grams. Thus based on functional im ages of uncorrected elimination rates a reliable, objective determination of regions of interest over normal and abnormal myocardium can be made.

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Vorläufige Ergebnisse von 99mTc-HMPAO-SPECT-Untersuchungen bei endogenen Psychosen

Nuklearmedizin ◽

10.1055/s-0038-1629475 ◽

1989 ◽

Vol 28 (03) ◽

pp. 88-91

Author(s):

J. Schröder ◽

H. Henningsen ◽

H. Sauer ◽

P. Georgi ◽

K.-R. Wilhelm

Keyword(s):

Blood Flow ◽

Cerebral Blood Flow ◽

Regional Cerebral Blood Flow ◽

Regions Of Interest ◽

Post Mortem ◽

Regional Cerebral Blood ◽

Hmpao Spect ◽

Endogenous Psychoses ◽

The Brain ◽

99Mtc Hmpao

18 psychopharmacologically treated patients (7 schizophrenics, 5 schizoaffectives, 6 depressives) were studied using 99mTc-HMPAO-SPECT of the brain. The regional cerebral blood flow was measured in three transversal sections (infra-/supraventricular, ventricular) within 6 regions of interest (ROI) respectively (one frontal, one parietal and one occipital in each hemisphere). Corresponding ROIs of the same section in each hemisphere were compared. In the schizophrenics there was a significantly reduced perfusion in the left frontal region of the infraventricular and ventricular section (p < 0.02) compared with the data of the depressives. The schizoaffectives took an intermediate place. Since the patients were treated with psychopharmaca, the result must be interpreted cautiously. However, our findings seem to be in accordance with post-mortem-, CT- and PET-studies presented in the literature. Our results suggest that 99mTc-HMPAO-SPECT may be helpful in finding cerebral abnormalities in endogenous psychoses.

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