In past years, topological indices are introduced to measure the characters of chemical molecules. Thus, the study of these topological indices has raised large attention in the field of chemical science, biology science and pharmaceutical science. In this paper, by virtue of molecular structure analysis, we determine the total Szeged index, vertex-edge Wiener index and edge hyper-Wiener index ...

The drinking, borewell and sewage water in the Sanmugasikamani Nadar (S.N) street, Naivatti Nadar (N.N) street and Thiruthangal area of Sivakasi has been studied. The various constituents monitored include the physicochemical characters like pH, total solids, total dissolved solids, total suspended solids; chemical parameters like total alkalinity acidity free CO2, dissolved oxygen, total hardn...

s Service. This is issued biweekly, and includes the titles, authors' names, and bibliographic references of currently published articles of chemical interest. The issue used was No. 1, 1971, dated 11 January. A typical entry from the issue is shown in Fig. 1; the bibliographic reference is given as the ASTM Coden. The titles are recorded in upper-case characters. An occasional artefact arises ...

Cuticular hydrocarbons (CHCs) are valuable characters for the analysis of cryptic insect species with few discernible morphological characters. Yet, their use in insect systematics, specifically in subterranean termites in the genus Reticulitermes (Isoptera: Rhinotermitidae), remains controversial. In this paper, we show that taxonomic designations in Reticulitermes from California (USA) sugges...

Mortality of first instars is generally very high, but variable, and is caused by many factors, including physical and chemical plant characters, weather and natural enemies. Here, a summary of detailed field-based studies of the early-stage survival of a specialist lepidopteran herbivore is presented. First-instar larvae of the monarch butterfly, Danaus plexippus, a milkweed specialist, genera...

in order to have a sustainable agriculture it is necessary to use environmental friendly inputs to improve ecological aspects of environment. basil (ocimum basilicum l.) is a medicinal and vegetable crop which is cultivated in different parts of the world. an experiment was conducted at research station, faculty of agriculture, ferdowsi university of mashhad, iran, in year 2009. a complete rand...

into pharmaceutical research in recent years to provide information about potential drug targets and their disease association. In most drug discovery projects, however, we are still in the situation where one does not have any specific target in mind at the time when a set of molecules for screening is necessary. In this situation, we often use small number of active compounds as clues to disc...

We have been studying existing taxonomies of forest insects that are based on morphological, genetic and/or behav­ ioral characteristics to evaluate the utility of cuticular (surface) hydrocarbons as taxonomic characters (Haverty and others 1988, 1989, Page and others 1990a, 1990b). Cuticular hydrocarbons are relatively stable metabolic end products that appear to be genetically fixed. Because ...