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Showing posts with the label Genetics and evolution

Modeling of the Heat Exchange Process in the Cylinder of Diesel between the Fuel Circuit and the Air Charge- Juniper Publishers

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  Juniper Publishers -  Journal of Oceanography Short Communication Studies of the process of atomization of fuel by injectors of ICE showed [ 1 , 2 ] that oxygen and fuel in the jet are distributed unevenly. The value of the excess air factor in the fuel flare decreases from 0.8-0.9 on its surface [ 3 ] to 0.15-0.25 at its center [ 4 ], and the droplet sizes increase from a few microns to 0. 1mm and more. The maximum diameter of the fuel droplets corresponds to the diameter of the nozzle nozzles of the injector [ 5 ]. Therefore, combustion begins on the surface of the fuel jets [ 6 ], and it is the heat and mass exchange surface between the fuel injected into the engine cylinder and the surrounding air charge. Professor V.I. Odintsov [ 7 ] proposed to assign the surface of the fuel flare to the cyclic fuel supply (F/gf). With the purpose of revealing quantitative regularities of the change in the exponent F/g, a simulation was carried out when fuel was supplied through one no...

Paradigm Shifts: Climate Change and Water Allocation- Juniper Publishers

  Juniper Publishers -  Journal of Oceanography Opinion Climate change is not an impending event, it has already arrived. Its extent is unclear, but notions of an impending or present mass extinction abound. Global warming is tempered by our seas, where more than a third of the planet's carbon is stored. These oceans, enormous sinks of carbon and home to vast and diverse life forms, will transform from a preserver of climatic balance to a destroyer of it. Barring a radical reduction of emissions, we will see at least four feet of sea-level rise and possibly ten by the end of the century. Climate change appears to be the most pressing collective action problem of modern times. Global coordination initiatives - from Kyoto to Paris -have not, to date, resulted in an appreciable reduction of emissions or in any discernable shift, globally, our economic system. Fundamentally, human perceptions of water, fish and nature generally has been through the lens of a resource. This paradig...

Casualty Agent (Yersiniosis) Detection in Reared Rainbow Trout (Oncorhynchus mykiss) in Kohgiluyeh-Va-Boyerahmad Province in Iran- Juniper Publishers

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  Juniper Publishers -  Journal of Oceanography Abstract From the June to the August 2013, Casualty happened in fish of some ponds of a farm in an area of Kohgiloye-&-BoyerAhmad province. It is a province in southwest of Iran. Three ponds from eight showed more mortality, they have 5 to 20 dead fish every day for 45 days. Afflicted fish have dark body they swimming near surface or at the bottom of the pond and swam unmatched by the flock. Some fish showed hemorrhages around eye and within the oral cavity and exophthalmia occasionally. 45 moribund rainbow trout sampled for dissection and bacteriological examination. Kidney, liver and spleen of moribund fish examined for the detection and identification of bacteria causative agent of disease in rainbow trout. They cultivated aseptically on different media (Blood Agar, Tryptic soy Agar, TCBS Agar and MacConkey Agar). All fish have been infected and suffered septicemia. A type of gram's negative bacterium was r...

The Effect of Salinity Acclimation on the Upper Thermal Tolerance Threshold of the European Green Crab- Juniper Publishers

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  Juniper Publishers -  Journal of Oceanography Abstract Fluctuations in salinity and temperature, among other varying environmental conditions, are stressors in estuaries and may work together to alter the physiological response of organisms that inhabit such environments. Laboratory assessments that investigate how animals respond to multiple environmental stressors can provide an ecological framework for understanding physiological performance across varying conditions. In this study, European green crabs, Carcinus maenas, were collected from Seadrift Lagoon, California, USA (37°54′27.82″N, 122°40′19.56″W) and were lab-acclimated at three different salinity concentrations typical of many estuaries: 15, 25, and 35 PSU at 12 °C (± 1 °C). After acclimation, crabs from each salinity treatment experienced a temperature ramp of 2 °C every 30min until they reached their critical thermal maxima (CTmax). Crabs held at 15 PSU acclimation treatment died at significant...

A Brief Review of Seaweed Harvest Value Chains- Juniper Publishers

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  Juniper Publishers -  Journal of Oceanography Abstract Key to realizing the vision of marine agronomy and seaweed utilization is an understanding about all steps necessary to collect and prepare the seaweed for processing (i.e., feedstock harvest, preprocessing, and logistics), as well as the costs and benefits of commercial implementation. Toward that end, the objective of this study was to examine the peer-reviewed scientific literature and other commercial information sources to identify and quantify key cost data. Specifically, this project focused on seaweed harvesting, drying, densifying, and transporting. This project did not, however, examine either growth/cultivation or the subsequent processing of the dried seaweed. Those topics, while important, will be the subject of a separate paper. Go to Introduction In recent years, mariculture has become a fast growing food sectors, not just in China and the Far East, but around the world, with an annual growth rate of 4-11%...