Closed-face shielded TBM driven tunnels are supported using precast concrete segmental linings. In the past these types of lining have been assessed without consideration being given to the coupling action along circumferential joints of adjacent rings or the true behaviour of joints along longitudinal joints, especially where these have a taper. The mechanical and geometrical characteristics o...

During the operation stage of cold region tunnels, isotropic surrounding rock in a freeze–thaw circle suffers long-term unidirectional cycles and gradually transforms into transversely material, which induces variation stress displacement distribution tunnels. Aimed at this phenomenon, an analytical solution mechanical response tunnels under circles induced by damage is proposed. The derived tw...

Brake lining atau kampas rem sangat penting perannya pada pesawat Cessna Grand Caravan 208B dalam mengontrol memberhentikan laju dari wheel pesawat. Dalam pengoperasian-nya brake selalu mengalami gesekan secara terus-menurus dengan disc sehingga menyebabkan material keausan, kekerasan berkurang, dan naiknya temperature drastis. Guna meningkatkan performa lining, maka ini akan diberi heat treatm...

abstract in this study we present successful management of an inflamed branchial cyst by stripping the inner lining thus providing a safe and definitive treatment. we believe that this is the first report of this technique in the literature.

Dynamic response of underground structures has always been a topic of concern for designers and researchers. The behavior of these complicated systems under blast loading is affected by various factors and parametric studies are required to investigate their significance. The importance of soil density around the underground structure through which, the waves of explosion of a penetrator bomb i...

A novel glandular epithelium lining the infrabuccal cavity and anterior pharynx is described in both workers and queens of the pharaoh's ant Monomorium pharaonis. The infrabuccal cavity, connected with the buccal tube, forms a ventral outgrowth of the anterior pharynx, and as such displays the tegumental lining with a cuticle and an epithelial layer. In its dorsal region, the cavity's epitheliu...

Electromagnetic radiation (EMR) technology makes it possible to evaluate changes in the stress-strain state (SSS) “tunnel lining-enclosing rock mass” system at a high level of interference, and create schemes long-term EMR control tunnels (geotechnical monitoring systems). The issues variations signals are extremely important for systems: based on anomalous deviations from normal regime one can...

After in vitro incubation with 3H-thymidine, the proliferation of synovial lining cells and fibroblasts was investigated in surgically-removed articular tissue. Under normal conditions, in nonrheumatoid arthritis and in osteoarthrosis, low proliferation rates for both cell types were observed. In rheumatoid arthritis, the rate of proliferation of both cell types was usually increased. An increa...

objective: the aim of this study was to investigate the translucency of resin-modified glass-ionomer cements (rmgic) and polyacid-modified composite resin (pcmr) over a period of one year. materials and methods: the study was done on three rmgic (fuji ii lc, photac-fil aplicap and vitremer) and one pcmr (dyract). a conventional gic (fuji cap ii) and two composite resins (tetric and z 100) were ...

  Littoral cell angioma is a splenic vascular tumor of splenic sinus lining cells that is considered benign in general. This report describes a case of littoral cell angioma with no malignant histological features. The lesion is composed of anastomosing vascular channels resembling splenic sinus; they are lined by endothelial cells which show mitotic activity very rare. Immunohistochemically, ...