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Delayed intracranial hemorrhage is dangerous and not so rare. To prevent such an exacerbation, head trauma patients taking anticoagulants is recommended 24-48 hour observational admission despite of normal CT. Among delayed intracranial hemorrhage, delayed traumatic subarachnoid hemorrhage (DTSAH) is rare. Here, we show 82-year-old woman presented with head injury. She was alert and no abnormality was detected in initial CT. Four days after that she came again due to vertigo. The CT showed subarachnoid hemorrhage in sylvian fissure. She had atrium fibriation and anticoagulant. We experienced an infrequent DTSAH with anticoagulant. The appearance of symptom was delayed notably 96 hours. Clinicians should be aware that DTSAH can occur much later than previous studies about delayed intracranial hemorrhage expected and check coagulation despite no drug information.

We report the effect of a Cr layer on the glass substrate during the growth of carbon nanotubes (CNTs) by chemical vapor deposition. When Fe was used as a catalyst in the CNT growth, longer CNTs were obtained by increasing the thickness of the Cr layer. However, CNTs were not grown on the surface with a thick Cr film and Co or Ni catalyst. These results arise from a difference in the mechanism of CNT formation when using different catalyst metals.

Methods Dentate participants (dentate-group) and edentulous patients with mandibular two-implant overdentures (IOD-group) were recruited. First, the dentate-group chewed three different types of two-coloured gum (gum1-gum3) for 5, 10, 20, 30 and 50 chewing cycles. Subsequently the number of chewing cycles with the highest intra- and inter-rater agreement was determined visually by applying a scale (SA) and opto-electronically (ViewGum©, Bland-Altman analysis). The ViewGum© software determines semi-automatically the variance of hue (VOH); inadequate mixing presents with larger VOH than complete mixing. Secondly, the dentate-group and the IOD-group were compared. Results The dentate-group comprised 20 participants (10 female, 30.3 ± 6.7 years); the IOD-group 15 participants (10 female, 74.6 ± 8.3 years). Intra-rater and inter-rater agreement (SA) was very high at 20 chewing cycles (95.00-98.75%). Gums 1-3 showed different colour-mixing characteristics as a function of chewing cycles, gum1 showed a logarithmic association; gum2 and gum3 demonstrated more linear behaviours. However, the number of chewing cycles could be predicted in all specimens from VOH (all p < 0.0001, mixed linear regression models). Both analyses proved discriminative to the dental state. Conclusion ViewGum© proved to be a reliable and discriminative tool to opto-electronically assess chewing efficiency, given an elastic specimen is chewed for 20 cycles and could be recommended for the evaluation of chewing efficiency in a clinical and research setting. Clinical Significance Chewing is a complex function of the oro-facial structures and the central nervous system. The application of the proposed assessments of the chewing function in geriatrics or special care dentistry could help visualising oro-functional or dental comorbidities in dysphagic patients or those suffering from protein-energy malnutrition. Objectives Chewing efficiency may be evaluated using cohesive specimen, especially in elderly or dysphagic patients. The aim of this study was to evaluate three two-coloured chewing gums for a colour-mixing ability test and to validate a new purpose built software ViewGum © 2015 The Authors. Published by Elsevier Ltd.