The study of cultural change associated with the emergence complex societies in Ancient China has heavily relied on evidence from ceramics, lithic technologies, changes settlement pattern, burial practices, and prestige goods. However, it remains unclear whether, if so to what extent, other aspects material culture follows similar evolutionary trajectories. Here, we analyze a large bone tool as...

This study investigates the relationship between depth of academic vocabulary knowledge and success among Saudi English-as-a-foreign-language university students. Fifty fourth-year students majoring in English completed a test, Word Associates Test (WAT), based on Academic List (AWL). Then, students’ grade point averages (GPAs) were obtained as measure success. Furthermore, learning strategy (V...

OBJECTIVES To evaluate the accuracy of the Root ZX in teeth with simulated root perforation in the presence of gel or liquid type endodontic irrigants, such as saline, 5.25% sodium hypochlorite (NaOCl), 2% chlorhexidine liquid, 2% chlorhexidine gel, and RC-Prep, and also to determine the electrical conductivities of these endodontic irrigants. MATERIALS AND METHODS A root perforation was simu...

Bone morphogenetic protein (BMP) signaling is involved in the regulation of a large variety of developmental programs, including those controlling organ sizes. Here, we show that transgenic (TG) mice overexpressing the BMP antagonist noggin (promoter, K5) are characterized by a marked increase in size of anagen hair follicles (HFs) and by the replacement of zig-zag and auchen hairs by awl-like ...

Arthrodesis of the sacroiliac joint (SIJ) for surgical treatment of SIJ dysfunction has regained interest among spine specialists. Current techniques described in the literature most often utilize intraoperative fluoroscopy to aid in implant placement; however, image guidance for SIJ fusion may allow for minimally invasive percutaneous instrumentation with more precise implant placement. In the...

Various navigation systems are available to aid pedicle screw placement. The O-arm replaces the need for fluoroscopy and generates a 3-dimensional volumetric dataset that can be viewed as transverse, coronal, and sagittal images of the spine, similar to computed tomography (CT) scanning. The dataset can be downloaded to the Stealth system (Medtronic Navigation, Louisville, Colorado) for real-ti...

(1490-2510 ng/dl) the marrow iron score was only 2 + (nondialysis control value). 1-3 In previous studies of serum ferritin and marrow iron, no attempt was made to investigate iron overload in the liver and spleen. In the absence ofhepatosplenic siderosis the marrowiron stores can be expected to represent total-body iron stores, and iron-depleted marrow can be regarded as evidence of iron defic...

AbstracfAn integrated finite difference approach is formulated for the full vector solution using transverse magnetic field components for dielectric waveguides, which is particularly suitable for nonuniform mesh and internal flux boundary conditions. This approach creates a sparse banded asymmetric matrix. Only few largest positive eigenvalues and the corresponding eigenvectors are calculated ...

In neonatal mouse skin, two types of dermal papilla (DP) are distinguished by Sox2 expression: CD133+Sox2+ DP are associated with guard/awl/auchene hairs, whereas CD133+Sox2- DP are associated with zigzag (ZZ) hairs. We describe a three-dimensional hydrogel culture system that supports clonal growth of CD133+Sox2+, CD133+Sox2-, and CD133-Sox2- (non-DP) neonatal dermal cells. All three cell popu...