Accelerated testing in environments aggressive for the specific material have shown that fastener threads that are rolled after strengthening heat treatments have improved resistance to SCC initiation. For example, intergranular SCC was produced in one day when machined (cut) threads of high strength steel (ASTM A193 B-7 and A354 Grade 8) were exposed to an aggressive aqueous environment contai...

Surface defects are important factors to surface quality of steel plates. The detection and recognition of surface defects can provide effective information for production optimization. There are several types of surface defects on hot rolled steel plates which are covered by lots of scales. The purpose of this paper is to recognize eight kinds of typical surface defects from scales. Bandelet t...

P-selectin glycoprotein ligand-1 (PSGL-1) mediates rolling of leukocytes on P-selectin under flow. The glycoproteins that enable leukocyte tethering to or rolling on E-selectin are not known. We used gene targeting to prepare PSGL-1-deficient (PSGL-1-/-) mice, which were healthy but had moderately elevated total blood leukocytes. Fluid-phase E-selectin bound to approximately 70% fewer sites on ...

In distributed applications, a group of multiple objects are cooperated to achieve some objectives. The computation on the objects are based on the massage passing, i.e. remote procedure call. The objects may su er from kinds of faults. In the presence of the object faults, the states of the objects in the system have to be kept consistent. If some object o is faulty, o is rolled back to the ch...

Because of its unique properties, titania (TiO2) represents a promising candidate in a wide variety of research fields. In this paper, some of the properties and potential applications of titania within rolled-up nanotechnology are explored. It is shown how the structural and optical properties of rolled titania microtubes can be controlled by properly tuning the microfabrication parameters. Th...

Deformation microstructure and texture in a cold-rolled austenitic steel 310S with low stacking fault energy (SFE) have been investigated by SEM and TEM. When 310S plates were rolled by 95% in thickness reduction, a remarkable development of the brass-type preferred orientation was confirmed by X-ray diffraction. SEM observations of the specimens with such texture exhibited a layered structure ...

Van Howe and Storm’s paper is commendable for asking valid questions regarding the scientific evidence upon which circumcision as an HIV prevention strategy is based.1 The paper however gives no real practical suggestions as to what the way forward should be regarding the already rolled out circumcision programs in Africa. Its position that the current circumcision programs amount to a waste of...

Selective laser melting (SLM) technology is useful for the fabrication of porous titanium implants with complex shapes and structures. The materials fabricated by SLM characteristically have a very rough surface (average surface roughness, Ra=24.58 µm). In this study, we evaluated morphologically and biochemically the specific effects of this very rough surface and the additional effects of a b...

Rolled stationary phases are fabrics (i.e., nonparticulate phases) that rapidly separate proteins from salts on the basis of size exclusion. Pore size and pore size distributions in the stationary phase determine how different size molecules distribute between the stationary and mobile phases in liquid chromatography columns. The potential for size exclusion chromatography by fabrics is not ini...

Firstly, the crushed ice is filled in unsterile gloves and they are closed using a thread or rubber band. Then, a sterile double‐layered polythene sheet is rolled and closed at one end and the gloves are laid down in a line by another person inside rolled polythenesheet. Afterwards, the sheet is completely rolled with the sterile surface exposed and other end is also closed. Now, a sterile clin...