Stainless steel pipe with fine hole and long size has recently been needed for the flow line of pure gas and liquid, which is used in the field of precision machinery. Inner wall polishing of the capillary is very difficult by ordinary finishing methods. High speed slurry flow finishing method developed by authors has been proved to have excellent polishing performance, but it has been needed a...

Laccase from Pleurotus florida was immobilized on agarose/agar/polyacrylamide gel, glass beads and alginate beads. The laccase entrapped agarose gel exhibited 88% of immobilization yield as compared to laccase immobilization on glass bead (72%) and Ba-alginate (50%). The enzyme embodied in agarose gel showed greater storage stability at 16°C as compared to enzyme immobilized on glass beads and ...

RNase activity increases in P1798 lymphoid tumors main tained in BALB/c mi ce that are undergoing irevitro drug-induced regression. Corticosteroids, 5-fluorouracil, vincristine, vinblastine, methotrexate, and triethylenemelamine produce re gression of appropriate sublines of P1798 lymphosarcoma as well as an increase in RNase activity. Numerous other agents tested had no effect either on tumor ...

We present experimental results on the Stokes experiment performed in a 3D dry liquid foam. The system is used as a rheometric tool: from the force exerted on a 1 cm glass bead, plunged at controlled velocity in the foam in a quasi-static regime, local foam properties are probed around the sphere. With this original and simple technique, we show the possibility of measuring the foam shear modul...

We present molecular dynamics simulations of a simple model for polymer melts with intramolecular barriers. We investigate structural relaxation as a function of the barrier strength. Dynamic correlators can be consistently analyzed within the framework of the mode coupling theory of the glass transition. Control parameters are tuned in order to induce a competition between general packing effe...

Otomotiv, beyaz eşya, savunma sanayi, uçak ve uzay sanayinde kullanılan bazı parçaların yüksek mukavemetli olmasının yanında aynı zamanda tok darbe dayanımlı olması da istenir. Bu çalışmada, ana matris malzeme olarak mühendislik polimerleri sınıfında yer alan poliamit 6 (PA6) polimeri kullanılmıştır. Katkısız PA6 ile ağırlık %5 oranında cam bilya (CB) katkılı (PA6-5CB), %15 elyaf (CE) takviyeli...

A method is described for the measurement of basilar membrane (BM) vibration velocimeter (LDV). The instrumentation was coupled to a compound microscope which served to visualize reflective glass microbeads placed on the BM. The laser beam of the LDV was focused in the microscope object plane and positioned over the reflective bead. We show examples of frequency tuning curves and displacement i...

We describe a high-throughput scanning optical microscope for detecting small-molecule compound microarrays on functionalized glass slides. It is based on measurements of oblique-incidence reflectivity difference and employs a combination of a y-scan galvometer mirror and an x-scan translation stage with an effective field of view of 2 cm x 4 cm. Such a field of view can accommodate a printed s...

The utility of X-ray fluorescence spectrometry in the study of stable and degraded glass as well as coatings applied to ethnographic costume is discussed. South African Ndebele costume and ceremonial regalia were studied from the collection of the National Museum of African Art, Smithsonian Institution, as part of a larger condition survey of the entire beaded collection. The susceptibility of ...

We investigated the role of receptor binding affinity in surface adhesion. A sensitive technique was developed to measure the surface energy of receptor-mediated adhesion. The experimental system involved a functionalized elastic agarose bead resting on a functionalized glass coverslip. Attractive intersurface forces pulled the two surfaces together, deforming the bead to produce an enlarged co...