2,983 research outputs found
Wandering Spleen with Splenic Vein Thrombosis: A Case Report
A wandering spleen is a rare clinical occurrence with fewer than 500 cases reported and an incidence of less than 0.2%1, 2. The spleen is an important component of the reticuloendothelial system, which is involved in immunological defence and can serve as a storage site for red blood cells3. The spleen is normally supported by the gastrosplenic, splenorenal and splenocolic ligaments, whereby failure of attachment of these ligaments to the spleen’s overlying peritoneum results in a hypermobile spleen3, 4. All cases of a wandering spleen have been found associated with a long splenic pedicle which consists of the splenic vessels and the tail of the pancreas2-4. A wandering spleen can be either congenital or acquired. In the congenital condition the ligaments fail to develop properly, whereas in the acquired form the hormonal effects of pregnancy and abdominal wall laxity are proposed as determining factors 5-7. In addition, failure of fusion of the dorsal mesogastrium during foetal development resulting in the characteristic long vascular pedicle has been attributed8. However, the precise aetiology of the wandering spleen is not known 2. Key words: Spleen, wandering, splenic, vein, thrombosi
Employment of Qur'anic Stories in the Service of Civil Society
The Qur'anic methods and their impact on the building of man and society---I chose this title because the Qur'anic stories derive from their lessons, and if we apply them to our contemporary reality and serve civil society, we will live in comfort, tranquility, and justice. It is He who is between His hands and the detailing of all things, and guidance and mercy for people who believe [Yusuf: .[111 The nature of the research required an introduction, three chapters, a conclusion, sources, and references. Introduction: After thanking and praising the Almighty and praying for His Prophet, I mentioned the reason for choosing the topic and the research plan. The first topic was Quranic stories and their goals; the second was civil society, its advantages, and its characteristics; and the third was the use of Quranic stories. Conclusion: The included the most important results of the research. In conclusion, I have made a modest effort in this research, for whatever was right in it is from God alone, to Him be praise in the first and the hereafter, and whatever was found in it of error, slippage, or omission is from myself and the devil, and I ask God's forgiveness for that. And I ask God to make this work purely for His sake and to teach us what will benefit us; we know that He is the guardian and the one who is able to do it.
Keywords: employment- Qur'anic - stories in the service- of civil societ
Instantaneous cell migration velocity may be ill-defined
Cell crawling is critical to biological development, homeostasis and disease.
In many cases, cell trajectories are quasi-random-walk. In vitro assays on flat
surfaces often described such quasi-random-walk cell trajectories as
approximations to a solution of a Langevin process. However, experiments show
quasi-diffusive behavior at small timescales, indicating that instantaneous
velocity and velocity autocorrelations are not well-defined. We propose to
characterize mean-squared cell displacement using a modified F\"urth equation
with three temporal and spatial regimes: short- and long-time/range diffusion
and intermediate time/range ballistic motion. This analysis collapses
mean-squared displacements of previously published experimental data onto a
single-parameter family of curves, allowing direct comparison between movement
in different cell types, and between experiments and numerical simulations. Our
method also show that robust cell-motility quantification requires an
experiment with a maximum interval between images of a few percent of the
cell-motion persistence time or less, and a duration of a few
orders-of-magnitude longer than the cell-motion persistence time or more.Comment: 5 pages, plus Supplemental materia
The anatomical components of the cardiac outflow tract of the bichir, polypterus senegalus. Evolutionary significance
El resumen aparece en el Program & Abstracts of the 10th International Congress of Vertebrate Morphology, Barcelona 2013.Anatomical Record, Volume 296, Special Feature — 1: P-077.In chondrichthyans and actinopterygians, the outflow tract of the heart, namely, the
cardiac portion intercalated between the ventricle and the ventral aorta, consists of two
anatomical components: conus arteriosus and bulbus arteriosus. In chondrichthyans and
extant representatives of phylogenetically ancient actinopterygian groups, the conus and
bulbus are well-developed in size, whereas in most teleosts, the bulbus is markedly
larger than the conus. Current knowledge about the cardiac outflow tract of the
polypteriformes is scarce and highly contradictory, a fact that contrasts with their
crucial phylogenetic position at the source of the actinopterygian lineage. In fact, it
remains uncertain whether they have a bulbus at the arterial pole of the heart. The
present study aimed to elucidate the anatomical arrangement of the cardiac outflow tract
of the bichir in an attempt to improve our understanding of the evolution of the
vertebrate heart. We examined the hearts from 12 bichirs using histochemical and
immunohistochemical techniques. Our findings showed that the outflow tract of the
bichir consists of two components, namely, a long conus arteriosus, largely composed
of myocardial tissue and furnished with a variable number of valves at its luminal side,
and a very short, elastin rich bulbus arteriosus, devoid of myocardium. The bulbus has
an arterial-like histological composition. However, it differs from the aorta because it
has a thicker wall, shows a different arrangement of the histological elements, is
covered by the epicardium and is crossed by coronary arteries. The present observations
are consistent with the notion that the conus arteriosus and the bulbus arteriosus have
coexisted from the beginning of the jawed vertebrate radiation. This is of particular
interest, because there is evidence that the bulbus arteriosus, which is a second heart
field derivative, is homologous with the intrapericardial portions of the aorta and
pulmonary artery of birds and mammals.Proyecto CGL2010-16417/BOS; Fondos FEDER
Directed Random Markets: Connectivity determines Money
Boltzmann-Gibbs distribution arises as the statistical equilibrium
probability distribution of money among the agents of a closed economic system
where random and undirected exchanges are allowed. When considering a model
with uniform savings in the exchanges, the final distribution is close to the
gamma family. In this work, we implement these exchange rules on networks and
we find that these stationary probability distributions are robust and they are
not affected by the topology of the underlying network. We introduce a new
family of interactions: random but directed ones. In this case, it is found the
topology to be determinant and the mean money per economic agent is related to
the degree of the node representing the agent in the network. The relation
between the mean money per economic agent and its degree is shown to be linear.Comment: 14 pages, 6 figure
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