The concentration of biological components of synovial fluid (such as albumin, globulin, hyaluronic acid, and lubricin) varies between healthy persons and osteoarthritis (OA) patients. The aim of the present study is to compare the effects of such variation on tribological performance in a simulated hip joint model. The study was carried out experimentally by utilizing a pin-on-disk simulator o...

OBJECTIVE To assess the incidence of diagnosis of high-grade intraepithelial neoplasia or prostate intraepithelial neoplasia (PIN), and atypical small gland proliferation (ASAP) at a uropathology reference center. To assess the indexes and findings on repeat biopsies. MATERIALS AND METHODS Diagnoses of PIN, ASAP or PIN + ASAP established between January 1, 2001 and December 31, 2003 were sear...

Metallic composite coatings with ceramic particles can be used to improve the mechanical and corrosion properties of steel. In the present research, Ni-ZrO2-TiO2 composite coating was fabricated on AISI 430 stainless steel through the electrodeposition method. The effect of the current density of electroplating (15, 17, 20, and 23 mA.cm-2)was investigated on the...

Pin structures on vector bundles are the natural generalization of Spin structures to the case of nonoriented bundles. Spin(n) is the central Z/2Z extension (or double cover) of SO(n) and Pin−(n) and Pin(n) are two different central extensions of O(n), although they are topologically the same. The obstruction to putting a Spin structure on a bundle ξ (= R → E → B) is w2(ξ) H(B;Z/2Z); for Pin it...

Informed Trading and the Pricing of Good and Bad Private Information in the Cross-Section of Expected Stock Returns We decompose PIN, the Probability of Informed Trading, into components that capture informed trading on good news (PIN G) and on bad news (PIN B), and provide new evidence that PIN and its components capture informed trading around quarterly earnings announcements. Our principal r...

Abstract Tribological applications of polytetrafluoroethylene (PTFE) are often limited by technological complexity to overcome its poor wear resistance. Here, a PTFE/polyetheretherketone (PEEK) heterolayer (HL) was proposed and evaluated as new solid lubrication solution. Pin-on-disk tribometry found the lowest friction coefficient ( μ ) 0.031 ultralow for PEEK/HL under typical conditions. The ...

AgI coatings have been deposited by electroplating on Ag plated Cu coupons. Electron microscopy shows that the coatings consist of weakly agglomerated AgI grains. X-ray diffraction, differential scanning calorimetry, thermogravimetry and mass spectrometry show that the AgI exhibits a reversible transformation from hexagonal to cubic phase at 150 °C. AgI starts to decompose at 150 °C with an acc...

We present a pin-assignment algorithm based on a new multi-layer chip-level global router. Combining pin assignment and global routing has been an important approach for the pin-assignment problem. But there are many difficulties when combining the two processes. In the past, only specialized global routing methods were used in the combined process. In our pin assignment program, we use an actu...