منابع مشابه
Grasshopper Management.pmd
Grasshoppers are divided into two major subgroups: the short-horned grasshoppers (Figure 1) and the long-horned grasshoppers, Mormon crickets and katydids (Figure 2). Short-horned grasshoppers are responsible for most of the reported crop losses. As a result, individuals of this subgroup are popularly referred to as “grasshoppers.” Figure 1. A mature two-striped female grasshopper (Melanoplus b...
متن کاملEvolutionary dynamics of a B chromosome invasion in island populations of the grasshopper Eyprepocnemis plorans.
Four natural populations of the grasshopper Eyprepocnemis plorans in the Mallorca island were analysed for several years revealing the recent invasion of the B1 chromosome from the south-west part of the island (Palma region) towards the north and to the east. In only 10 years, the mean number of Bs in the northern population at Pollença increased from 0.053 to 0.692. Therefore, B chromosome in...
متن کاملInvasion of waves, invasion of thoughts
Abstract Nowadays, as accepted as the era of information or digital, time has changed and has invited all people to a new world in which everybody must define himself. Avoiding from getting benefit from this human progress is useless; Rather, we must know this great technology best and adapt ourselves with its consequences. In fact, in many countries and among many nations there had been peopl...
متن کاملGrasshopper Avoidance of Patterns
Motivated by a geometrical Thue-type problem, we introduce a new variant of the classical pattern avoidance in words, where jumping over a letter in the pattern occurrence is allowed. We say that pattern p ∈ E+ occurs with jumps in a word w = a1a2 . . . ak ∈ A+, if there exist a non-erasing morphism f from E∗ to A∗ and a sequence (i1, i2, . . . , il) satisfying ij+1 ∈ {ij + 1, ij + 2} for j = 1...
متن کاملCongeries , Mapping and Grasshopper
Conventional computer systems implement a dichotomy of storage mechanisms: a file store providing a durable repository allowing data to exist after the creating program has ceased execution (such data is termed long-term data), and virtual memory providing a repository for data during program execution (such data is termed short-term data). In typical conventional systems it is the responsibili...
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ژورنال
عنوان ژورنال: The Annals of Iowa
سال: 1957
ISSN: 0003-4827,2473-9006
DOI: 10.17077/0003-4827.7462