Creel surveys were performed over a three week period in late spring, 2011, in the Lafourche and Calcasieu area estuaries of the Louisiana Gulf Coast. Weights and lengths were measured for black drum (Pogonias cromis), red drum (Sciaenops ocellatus), and spotted seatrout (Cynoscion nebulosus), and relative condition factors were calculated relative to expected weights from the long term (5 year...

The vast majority of controllers found in manufacturing plants use a combination of Proportional, Integral and Derivative (PID) control. These controllers are easily understood, and there are only three controller values to set up when attempting to achieve an acceptable system response. This paper looks at one industrial application of a PI controller, controlling the speed of a casting drum i...

Reducing start and stop time without destroying the pavement surface is important in enhancing productivity of double-drum roller and compact quality of asphalt pavement, but it is difficult in confirming the maximum brake deceleration or start acceleration of double-drum roller. Dynamic analysis is used in studying these questions, and a mathematic model of double-drum roller is established, b...

We experimentally investigate the effect of grain shape on flow granular material. The is modified to highlight circularity in a 2D rotating drum. Using laser cutter, we create particles with decreasing circularity. observe that depends rotation speed For high speed, influenced by packing’s dilatancy whereas, at low packing fraction seems influence flowing dynamics. link these two measurements ...

During the composition of a piece of music, composers often focus on the crafting of melody and harmonic lines rather than a percussive track that may accompany them. For amateur composers, creating a drum track by hand can be both tedious and frustrating, due to their lack of skill and experience with the task. In recent years, computer software tools have been created to help automate the cre...

—We examined the influence of prerelease exposure to natural vegetation on the survival skills of a marine finfish, the red drum Sciaenops ocellatus. Red drum larvae at 18 d posthatch (10–12 mm standard length [SL]) were collected from a Texas Parks and Wildlife Department hatchery and reared with and without smooth cordgrass Spartina alterniflora, for either 10 or 20 d. High-speed video was th...

Courting males often perform different behavioural displays that demonstrate aspects of their quality. Male fiddler crabs, Uca sp., are well known for their repetitive claw-waving display during courtship. However, in some species, males produce an additional signal by rapidly stridulating their claw, creating a 'drumming' vibrational signal through the substrate as a female approaches, and eve...

This study measured surface electromyography of the biceps brachii and triceps brachii during repeated drum playing with and without a drumstick to better understand activation of the upper arm muscles and inform the use of instrument playing for motor rehabilitation. A total of 40 healthy college students participated in this study. All participants were asked to strike a drum with their hand ...

A percussionist can alter the harmonic content of a tunable acoustic drum to provide a desired sound. By analysis of different aspects in construction of a drum the specific sound can be implemented. Through a Fast Fourier Transform of electronically acquired audio data an analysis of a drum can be performed at many stages of its construction. By dissecting the drum construction into various la...

Delayed coking is a refining process that consists of the upgrading of petroleum residues into lighter and more valuable hydrocarbon fractions by promoting thermal cracking on the residue stream. Petroleum coke is a by-product of this process and depending on its morphology it can be used as fuel for steam generation, cement calcination or as feed stock for the manufacturing of aluminum and ste...