A microscopic investigation has been made on the shearing of one leaded and two leadfree solders by using an in situ SEM method. A shear lap joint specimen is designed and fabricated to accommodate a thin layer of solder alloy between copper strips. A non-contact method that measures strains in a very narrow area in the solder was applied. A laser grid was also used on the copper strip for meas...

Based on techniques of close upper protective coal-rock layer mining, relieved gas extraction, and underground gangue washing-discharging-backfilling, this paper initiates the concept of mixed fully-mechanized coal mining, which combines a solid backfilling method and a caving method (hereinafter referred to as “backfill and caving mixed mining”). After the principle and key techniques are intr...

Three integral membrane proteins, clau- din-1, -2, and occludin, are known to be components of tight junction (TJ) strands. To examine their ability to form TJ strands, their cDNAs were introduced into mouse L fibroblasts lacking TJs. Immunofluorescence microscopy revealed that both FLAG-tagged claudin-1 and -2 were highly concentrated at cell contact sites as planes through a homophilic intera...

Le cubitus varus est la complication la plus fréquente des fractures supra condyliennes de l'enfant. Il est la conséquence d'un cal vicieux supra condylien survenu à la suite d'une réduction imparfaite ou d'un déplacement secondaire. En plus des conséquences fonctionnelles, le préjudice esthétique est très mal vécu par l'enfant et surtout par sa famille. C'est le cas de notre malade J. A. âgé d...

Conventional freeze-fracture techniques were combined with immunogold labeling and with plastic embedding and sectioning to analyze the distribution of membrane immunoglobulins (mIgs) and their associated intramembrane particles (IMPs) in E-face replicas of murine B-lymphocyte plasma membranes. Immunogold labels were applied to cells after the process of freeze-fracture and replication. Convent...

The triad is the junctional association of transverse tubule with sarcoplasmic reticulum terminal cisternae. A procedure for the isolation of highly enriched triads from skeletal muscle has been described in the previous paper. In the present study, the structural features of isolated triads have been examined by thin-section, negative-staining, and freeze-fracture electron microscopy. In isola...

Bone fractures of the face often occur due to sports injuries. However, there is no literature describing asymptomatic facial injuries. Here we report an asymptomatic facial bone fracture following a sports-related facial injury, in which periorbital emphysema was caused by coughing. This is the case of an 18 year-old man who experienced orbital swelling of the face after coughing. He had no si...

BACKGROUND fall-related injuries in older people are a major public health concern. This study examined the relationship between psychosocial determinants of healthy ageing and risk of fall-related hip fracture in community-dwelling older people. The purpose was to contribute evidence for promotion of healthy ageing strategies in population-based interventions for fall injury prevention. METH...

The luminal and discoid vacuole membranes of the superficial cell layer of the transitional epithelium of the mammalian urinary bladder have been studied by thin-sectioning and freeze-fracture-etch (FFE) electron microscope methods. For the FFE studies membranes were deposited on a cationized glass surface, covered by a thin copper disc, and fractured under liquid N2. Specimens were etched at -...