introduction: functional constipation is one of the most common gastrointestinal symptoms which could affect patients’ quality of life. the colonic transit time test could be used for determining functional constipation subtypes. the aim of our study was to determine the abnormalities of the subtypes of functional constipation using ctt. methods and materials: this cross-sectional study was per...

Blood cells exit the marrow through the wall of the marrow sinuses. Using quantitative electron microscopy of mouse marrow, we addressed two questions regarding the anatomic process of egress: Do leukocytes and reticulocytes exit at specific sites on the sinus wall or do they exit at random loci? Do leukocytes and reticulocytes in egress use a preformed pore or do they make the pore as they exi...

A new method of evaluation of the response of a water table to artificial recharge is presented. The solution is formulated in the form of a simple numerical model. The model has several advantages over the traditional methods of mounding prediction. The effect of the unsaturated zone, which modifies the recharge rate as compared with the infiltration rate, is considered. Mounding is calculated...

We present an improved estimate of the occurrence rate of small planets orbiting small stars by searching the full four-year Kepler data set for transiting planets using our own planet detection pipeline and conducting transit injection and recovery simulations to empirically measure the search completeness of our pipeline. We identified 156 planet candidates, including one object that was not ...

The inferred crystallization history of the troctolitic Lower Zone of the Kiglapait Intrusion in Labrador is tested by melting mineral mixtures from the intrusion, made to yield the observed crystal compositions on the cotectic trace of liquid, plagioclase, and olivine. Melting experiments were made in a piston-cylinder apparatus, using graphite capsules at 5 kbar. Lower Zone assemblages crysta...

New neurons and glial cells are generated in an extensive germinal niche adjacent to the walls of the lateral ventricles in the adult brain. The primary progenitors (B1 cells) have astroglial characteristics but retain important neuroepithelial properties. Recent work shows how B1 cells contact all major compartments of this niche. They share the "shoreline" on the ventricles with ependymal cel...

Nowadays, traffic management policy in metropolitans is focused on increasing the share of public transit. The limitation of supply and slowing growth of road infrastructures have provided congestion for users who choose personal cars. Therefore, applying demand management policies which decrease the utility of personal cars and increase the tendency to public transit can be very important. Con...

FRY, R. J, M., S. LESHER, AND H. I. KOHN. Age effect on cell-transit time in mouse jejunal e$Ywlium. Am. J. Physiol. 20 I (I ) : 213-216. I g6r .Epithelial cell renewal in the jejunum of CAFr mice was studied by observing the time for cells labeled with tritiated thymidine (1.5-2.0 PC/g body wt.) to pass from the crypt to the extrusion zone at the tip of the villus. Mice of three ages were stud...