Spiders perform many essential ecological services, yet humans often experience negative emotions toward spiders. These emotions can lead to the avoidance of beneficial events. These emotions may affect beliefs about what should or should not be included in a science curriculum. This study investigated how activities with living spiders affected preservice middle school science teachers' emotio...

This paper is about spider diagrams, an extension of Euler diagrams that includes syntax to make assertions about set cardinalities. Like many diagrammatic logics, spider diagrams are a monadic and first-order, so they are inexpressive. The limitation to first-order precludes the formalisation of many fundamental concepts such as the cardinality of a set being even. To this end, second-order sp...

Spider veins (also known as spider hemangiomas) unlike varicose veins (dilated pre-existing veins) are acquired lesions caused by venous hypertension leading to proliferation of blood vessels in the skin and subcutaneous tissues due to the release of endothelial growth factors causing vascular neogenesis. More than 60% of the patients with spider veins of the legs have significant symptoms incl...

date palm spider mite is one of the major pests of date palm in khuzestan.this pest damages fruits in orchards. in the present study responses of 30 native date palm cultivars of khuzestan were evaluated by assessment of pest infestation severity and fruit damage characteristics. based on the responses, cultivars were clustered into four groups as very highly infested cultivars including liloei...

background & aim: tetranychus urticae koch is one of the most important pests of crops, ornamental and greenhouse plants in the world and, can damage to 900 plant species. resistances to pesticides and acaricides have guided researches to introduce new methods to control t. urticae. botanical pesticides are an important group of natural productions that are usually safer than conventional p...

Title of Dissertation: MECHANISMS UNDERLYING OUTBREAKS OF SPIDER MITES FOLLOWING APPLICATIONS OF IMIDACLOPRID. Adrianna Szczepaniec, Ph.D., 2009 Directed By: Professor Michael J. Raupp, Department of Entomology Imidacloprid is a widely used neonicotinoid insecticide with high efficacy and long residual activity, and it is frequently applied to manage insect pests in urban landscapes. Recent rep...

New impetus for considering the potential of spiders to control insect prey comes from foodweb models indicating that generalist predators can limit prey populations through the establishment of stable population equilibria between predators and associated prey (De Angelis et al., 1975; Tanner, 1975; Post & Travis, 1979). Spiders are generalist feeders (Riechert & Ĺuczak, 1982) that meet the cr...

background:   due to importance and fatal affect of red-back spiders, latrodectus hasselti , a f a unistic survey for presence of this spider in bandar abbas has been conducted. this animal is considerably the most medically importance spiders all over the world. methods: live adult spider specimens were collected from bandar abbas town using hand catch conventional method and transferred to th...

Geared to complement UML and to the specification of large software systems by non-mathematicians, spider diagrams are a visual language that generalizes the popular and intuitive Venn diagrams and Euler circles. The language design emphasized scalability and expressiveness while retaining intuitiveness. In this extended abstract we describe spider diagrams from a mathematical standpoint and sh...

A peptidomimetic compound containing leucine, tyrosine and malonic acid self-assembles through various noncovalent interactions to form spider silk-like fibers at ambient temperature. From the high-density liquid, a liquid-solid phase transition is initiated at 20 °C and solidification occurs upon contact with air. The fiber has comprehensive mechanical strength and optical properties similar t...