In this paper using the Clifford algebra over R4 and its matrix representation, we construct Clifford scaling functions and Clifford wavelets. Then we compute related mask functions and filters, which arise in many applications such as quantum mechanics.

Objective- To study the effects of Isoflurane in inducing anesthesia and comparing mask and chamber induction anesthesia in rabbits for the first trial in Iran. Design- Experimental design. Animals- 20 female adult New Zealand White rabbits. Procedures- Animals were divided randomly into two groups. A 40 cm3 Chamber was used in group A with 4-5% concentration of isoflurane and a face mask ...

Biological Monitoring of Styrene in FRPMaking Small Industries in Kumamoto, Japan— Winter-Summer Difference and Effect of Protective Masks in Practical Working Conditions—: Tsukasa INAOKA, et al. Department of Public Health, Kumamoto University School of Medicine— Objective: Studies were carried out in Kumamoto, Japan to examine 1) the winter-summer differences in the average individual exposur...

To decrease the incidence of pneumoconiosis, we examined dust protective mask performance and its relation to pulmonary function as well as the effects of worker education on the proper wearing of masks. One hundred and seventy-eight workers from 15 factories subject to dust exposure participated in this study. All participants were interviewed to obtain relevant personal information and underw...

BACKGROUND Noninvasive positive pressure ventilation (NPPV) using a face mask is the ventilatory mode of choice in selected patients experiencing acute exacerbation of chronic obstructive pulmonary disease (COPD). A high incidence of intolerance limits the use of this approach. OBJECTIVE To evaluate the sequential use of mask and helmet during NPPV in patients with severe exacerbation of COPD...

BACKGROUND Fencers often complain of progressive difficulty in breathing during matches, which is generally attributed to restricted air, light and heat circulation from wearing a mask. Physiologically, the nasal structure generates airflow resistance that can reach -50% of the total respiratory resistance. OBJECTIVES This study aims to investigate the presence of nasal obstruction in fencers...

We probed how processing of luminance increments and decrements interacts with attention dependent substitution masking. Results showed that a target was identified better when surrounded by an opposite polarity mask as compared to the same polarity mask. Opposite polarity mask decreased an effect of distracters, indicating influence on the time of directing attention to a target. The opposite ...

This paper gives a simple and original presentation of various coronagraphs inherited from the Lyot coronagraph. We first present the Lyot and Roddier phase mask coronagraphs and study their properties as a function of the focal mask size. We show that the Roddier phase mask can be used to produce an apodization for the star. Optimal coronagraphy can be obtained from two main approaches, using ...