Structural changes in the rat placenta during the last third of gestation were for the first time assessed by stereology. Fischer female rats were euthanized on the day 16 or day 19 of gestation, and 35 placentas were collected. Three randomly selected placentas from each group were stereologically analyzed for the absolute volume. The proportion of the glycogenic cells and the trophoblast gian...

Leibniz described imaginary roots, negatives, and infinitesimals as useful fictions. But did he view such 'impossible' numbers mathematical entities? Alice Bob take on the labyrinth of current scholarship.

introduction: otosclerosis is a disease of bony labyrinth. structural changes in the labyrinth often cause ossicular fixation, and thus conductive hearing loss. the purpose of this study was to evaluate middle ear exploration findings and frequency of ossicular and footplate area anomalies in patients with suspected otosclerosis referred to amiralmomenin and golsar hospitals in rasht, iran.   m...

During virus entry, the surface glycoprotein of Ebola virus (EBOV) undergoes a complex set of transformations within the endosomal network. Tools to study EBOV entry have been limited to static immunofluorescence or biochemical and functional analysis. In a recent article inmBio, Spence et al. reported a novel, live-cell-imaging method that tracks this transformational journey of EBOV in real t...

In this article, we present the BRIO labyrinth system, a challenging real-world, robotic system suited as testbed for an empirical analysis and comparison of Reinforcement Learning (RL) algorithms. We discuss the development of both the testbed itself as well as a realistic simulation of the system and first experiments with RL algorithms on the simulated BRIO system. Furthermore, we briefly sk...

when teaching to our housestaff trainees thoracocentesis that does not rely on chest percussion, namely, clavicle tapping with posterior chest auscultation. Stated simply, this technique takes advantage of the sound transmission characteristics of the inflated lung and the loss of sound transmission caused by the interposition of a layer of fluid between the air-filled lung and the chest wall. ...

Pigeons without labyrinths or with sectioned spinal cords continue to show compensatory reflexes to passive body rotations. This paper reports electrophysiological efforts to identify the source of afference controlling these reflexes. A proportion of fibres in lumbosacral spinal dorsal roots were found to respond briskly to body rotations around the longitudinal and the transversal axes and le...

Two decades ago, people began using the "glass ceiling" catchphrase to describe organizations' failure to promote women into top leadership roles. Eagly and Carli, of Northwestern University and Wellesley College, argue in this article (based on a forthcoming book from Harvard Business School Press) that the metaphor has outlived its usefulness. In fact, it leads managers to overlook interventi...

Labyrinth seal force estimates are important to the prediction of the stability of turbomachinery. The force prediction methods fall into several categories: experiments, bulk flow analysis, and finite volume analysis. Finite volume analysis can be split into two subcategories: selfdeveloped and commercial. In this research, a commercial computational fluid dynamics (CFD) program called ANSYSCF...

Smoking increases the risk of pregnancy complications such as spontaneous abortion and low birth weight (LBW). By cigarette smoke exposure (gestational day, GD3-17), normal-litter-size pregnancy with low birth weight (NP-LBW) and small-litter-size pregnancy with normal birth weight (SP-NBW) in rats were induced. The placental weight in SP-NBW was twice the weight of the normal in contrast with ...