نتایج جستجو برای: marine unbonded flexible pipe
تعداد نتایج: 223749 فیلتر نتایج به سال:
*Prepared in the Program Division, B u reau of Employment Security. D U R I N G 1946, employers subject to State unemployment insurance laws were taxed at an estimated average rate of 1.4 percent of taxable pay rolls (table l ) 1 —the lowest average rate since the first year of the program (1936) when the Federal tax rate was only 1 percent. The 1.4percent revenue rate is expected to yield $828...
The restriction of Pipe, a potential glycosaminoglycan-modifying enzyme, to ventral follicle cells of the egg chamber is essential for dorsoventral axis formation in the Drosophila embryo. pipe repression depends on the TGFalpha-like ligand Gurken, which activates the Drosophila EGF receptor in dorsal follicle cells. An analysis of Raf mutant clones shows that EGF signalling is required cell-au...
Several literatures presented automated systems for detecting or classifying sewer pipe defects based on morphological features of pipe defects. In those automated systems, however, the morphologies of the darker center or some uncertain objects on CCTV images are also segmented and become noises while morphology-based pipe defect segmentation is implemented. In this paper, the morphology-based...
In petrochemical, marine, and other fields, high-concentration solid-liquid two-phase flow induced pipe vibration has always been a problem worthy of attention. Especially when the oil transports flow, researchers have introduced equivalent density into fluid momentum equation to consider influence on pipes with vibrations. This method ignores particle collision accumulation in vibration, which...
CRA-lined pipelines, i.e. pipes with an inner pipe of a corrosion resistant alloy inside of a ferritic steel pipe carrying the hoop stress, pose a challenge to inspect with conventional in-line inspection technologies. Existing UT technology is not able to inspect through the interface of a CRA and a ferritic steel component. Additionally, current MFL technology is not able to sufficiently magn...
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Marine fisheries are highly complex and stochastic. A simulation model, therefore, is required. Simulation-based optimization utilizes the simulation model in obtaining the objective function values of a particular fishing schedule. The decision support system for fishery management will assist the government agencies and the fishing industry to use sound data and management science techniques ...
To evolve structured programs we introduce H-PIPE, a hierarchical extension of Probabilistic Incremental Program Evolution (PIPE). Structure is induced by \hierarchi-cal instructions" (HIs) limited to top-level, structuring program parts. \Skip nodes" (SNs) allow for switching program parts on and oo. They facilitate synthesis of certain structured programs. In our experiments H-PIPE outperform...
an important issue in power generation and petrochemical industries is the monitoring of pipe wall thickness and corrosion/erosion rate. the pipes are usually subject to erosive and/or corrosive environments and any failure could be catastrophic. while periodic manual ultrasonic thickness measurement is the common practice in many industries, in certain cases, where higher accuracies are requir...
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