Electromagnetic connector

Connector pair consists of two iron cores brought together a short distance from each other. Each core is wound with insulated wire. Ac signal is connected through the pair across the gap by magnetic induction. Device can be used underwater or in flammable atmosphere

Bacteria classification using Cyranose 320 electronic nose

Background An electronic nose (e-nose), the Cyrano Sciences' Cyranose 320, comprising an array of thirty-two polymer carbon black composite sensors has been used to identify six species of bacteria responsible for eye infections when present at a range of concentrations in saline solutions. Readings were taken from the headspace of the samples by manually introducing the portable e-nose system into a sterile glass containing a fixed volume of bacteria in suspension. Gathered data were a very complex mixture of different chemical compounds. Method Linear Principal Component Analysis (PCA) method was able to classify four classes of bacteria out of six classes though in reality other two classes were not better evident from PCA analysis and we got 74% classification accuracy from PCA. An innovative data clustering approach was investigated for these bacteria data by combining the 3-dimensional scatter plot, Fuzzy C Means (FCM) and Self Organizing Map (SOM) network. Using these three data clustering algorithms simultaneously better 'classification' of six eye bacteria classes were represented. Then three supervised classifiers, namely Multi Layer Perceptron (MLP), Probabilistic Neural network (PNN) and Radial basis function network (RBF), were used to classify the six bacteria classes. Results A [6 × 1] SOM network gave 96% accuracy for bacteria classification which was best accuracy. A comparative evaluation of the classifiers was conducted for this application. The best results suggest that we are able to predict six classes of bacteria with up to 98% accuracy with the application of the RBF network. Conclusion This type of bacteria data analysis and feature extraction is very difficult. But we can conclude that this combined use of three nonlinear methods can solve the feature extraction problem with very complex data and enhance the performance of Cyranose 320

Magic numbers in the discrete tomography of cyclotomic model sets

We report recent progress in the problem of distinguishing convex subsets of cyclotomic model sets $\varLambda$ by (discrete parallel) X-rays in prescribed $\varLambda$-directions. It turns out that for any of these model sets $\varLambda$ there exists a `magic number' $m_{\varLambda}$ such that any two convex subsets of $\varLambda$ can be distinguished by their X-rays in any set of $m_{\varLambda}$ prescribed $\varLambda$-directions. In particular, for pentagonal, octagonal, decagonal and dodecagonal model sets, the least possible numbers are in that very order 11, 9, 11 and 13.Comment: 6 pages, 1 figure; based on the results of arXiv:1101.4149 [math.MG]; presented at Aperiodic 2012 (Cairns, Australia

Poison plants of Western Australia - Cabbage poison (Velleia discophora F. Muell.)

Cabbage poison is a plant of bitter and disagreeable taste, not readily eaten by stock, but field evidence suggests that on occasions it may be responsible for moralities, particularly of sheep. It was first tested and found to be toxic in 1939, with material obtained from Koorda-Mollerin district

Poison plants of Western Australia: isotropis

The genus Isotropis is restricted to Australia. Of the total of nine species six are recorded in Western Australia, two of them being known as Lamb poisons while the remainder have no common names. Three are known to be toxic to stock, but concerning the remaining three we have no definite information. * Poison Plants of Western Australia is an ongoing series of articles. Toxic Plants of the Genus Isotropis is the subtitle and primary focus of this article

Poison plants of Western Australia: the thorn apples (datura species)

Many garden enthusiasts are familiar with a shrub or small tree known as the Angel\u27s Trumpet or Trumpet-flowered Brugmansia. Some nurserymen call it Brugsmania. There is another garden favourite which does not appear to possess a common name but is an annual or perennial plant from one to four feet in height, of summer growth and carrying erect violet or white trumpet-shaped flowers succeeded by large bristly or prickly pods. Both these are species of Datura. Another species is native to Western Australia while four more are introduced noxious weeds

Poison plants of Western Australia: toxic plants of the genera gastrolobium and oxylobium

Since the early days of settlement in Western Australia very heavy stock losses have resulted from the many poisonous species of the two closely related genera, Gastrolobium and Oxylobium which, with two exceptions, are widely distributed throughout the southern areas of the State. They constitute the largest groups of native poisonous plants and have been responsible for a large proportion of the economic losses due to plant poisoning

Poison plants of Western Australia: toxic plants of the genus euphorbia

The genus Euphorbia comprises nearly one thousand species, a large number of which yield a milky juice or latex. Some of these plants are familiar as garden plants, e.g. the Poinsettia the Mexican fire bush, the crown of thorns , and the strange cactus-like Euphorbia lactea that is a familiar object in our parks and gardens

Poison plants of Western Australia: Ironwood

The genus Erythrophloeum comprises five species, native to Africa, China and Northern Australia. At least three of these are known to be poisonous, including E. guineense which was used as an ordeal and arrow poison by the natives of West Africa. The South African species, also, is known to be poisonous to stock