Field experiments were conducted at three sites in Nebraska Mead, Clay Center, and Concord for one cropping season to evaluate the agronomic performance, and to assess the effects of different transgenic and non-transgenic maize, with and without insecticide applications on adult target insects, and selected non-target arthropods specifically the key herbivores, predators, parasitoids, and saprovores using yellow sticky cards. The treatments were: a) a Cry1Ab x CP4 EPSPS maize, b) a CP4 EPSPS...
The synthesis of the target compounds 4a-k, 5a-k and 6a-k was accomplished according to the reaction sequence illustrated in Scheme 1. 3-acetylcoumarin 1 was prepared Knoevenagel condensation of salicylaldehyde with ethyl acetoacetate in presence of catalytic amount of piperidine at room temperature. 3-acetylcoumarin 1 was subjected to base catalyzed Claisen-Schmidt condensation reaction with appropriate benzaldehydes in n-butanol; generating the required key intermediates...
The human eye is capable of perceiving vision at a wide range of intensities from dim moonlight to bright sunlight. Be it a moonless night sky, a newsprint read, a candle flame, fluorescent tubes, tungsten lights or the bright sun, the visual system copes with the dynamic range of light intensities of a millionth of a million to one with at least twelve orders of magnitude roughly from 10-6 cd/m2 through to 106 cd/m2. However, a typical nerve cell responds to thousand to one range of intensity...
Prepare an essay on the impact of deforestation on Bird communication Destruction caused by human disturbance has had adverse effect on the various ecosystems. One of the major concerns is deforestation. Deforestation is an environmental catastrophe that converts forested area to non forested area for use such as arable land, urban use, logged area or wasteland. The act of deforestation generally removes the functioning ecosystem for wildlife. An ecosystem is a natural habitat of a wide variety...
The earthquake, considered as an independent natural phenomenon of vibration of the ground, in very few cases poses a threat to humans, as for instance when it causes major landslides or tidal waves known as tsunamis. The earthquake becomes a dangerous phenomenon only when it is considered in relation to structures. Of course, the problem is the structure under seismic excitation and not the earthquake itself. This is because the structural system is designed basically for gravity loads and not...
Biogeography represents a branch of biological science that studies biogeographical division of plant, animal as well as biological diversity. It explains how the patterns of these evolve after a while (Ganderton and Coker, 2005). In recent years, whereas biogeography has conventionally concentrated on multicellulare organisms, biologists have discussed and analysed various biogeographical questions and they have been recently interested in unicellular organisms (microorganisms) (Ramette and...
According to Maciocia, "Interrelationship is the essence of Chinese medicine since the body is regarded as an integrated whole." (Maciocia, 2005, p. 171) Therefore, even though the five Zang organs, which are known in TCM theory as the Heart, Lungs, Spleen, Liver and Kidneys, have their own vital functions, they are also interrelated and coordinated in order to maintain a balance among the Internal Organs. Hence, in order to understand them properly, it is important that these vital...
Gas chromatography is a technique used to separate and measure volatile components of mixtures. A small sample of the mixture is injected into the instrument and it is vaporized before entering the column. The sample is moved by helium gas through the column until it reaches a detector. In this experiment, solutions with various known concentrations of caffeine were analyzed using gas chromatography and a calibration curve was created from the data acquired. A sample of caffeine of unknown...
Exxon Mobil Corporation is an American company. They specialize in oil and gases. The founder of Exxon Mobil is John D. Rockefeller. The head quart is in Irving, Texas. It was created on 30th November 1999. It is a worldwide company. Rex W. Tillerson who is the Chairman, President, & CEO , Mark W. Albers who is the Senior Vice President ,Michael J. Dolan who is the Senior Vice President and Donald D. Humphreys who is the Senior Vice President and Treasurer are the people behind these...
The goal of features is to characterize data from measurements whose values are very similar to objects in the same class and very different for objects in a different class. As well as providing discriminatory information (Kostka P et al, 2004), one of the most important functions of feature extraction is a dimensionality reduction of the data. This classification algorithm extracts several features of respiratory signals and utilizes for apnea detection. The feature extraction plays a very...