Density calculation

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  • Amidst the many advantages of gas turbine (GT) combined cycles (CC) popular today from various standpoints (lower investment than for new greenfield plants, reduced environmental impact, and faster installation and startup), one drawback is that the achievable output decreases significantly as the ambient inlet air temperature increases. The lower density of warm air reduces mass flow through the GT. And, unfortunately, hot weather typically corresponds to peak power loads in many areas. So the need to meet peak-load and power-sales contract requirements causes many ...

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  • In Design of high density transformers for high frequency high power converters, the abovementioned issues of high-frequency transformers are explored, particularly in regards to high-power converter applications. Loss calculations accommodating resonant operating waveform and Litz wire windings are explored. Leakage inductance modeling for large-number-of-stand Litz wire windings is proposed. The optimal design procedure based on the models is developed.

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  • The geometries and spin densities of green tea catechin radicals are calculated using unrestricted B3LYP hydrid density functional calculations. The radicals which have the smallest value of Maximum Spin Density (MSD) are referred to the most stable radical species deriving from the absolute minimum energy of investigated compounds. In this study, we have calculated these values in gas phase and water solution.

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  • The glass must be without optical faults, neither as far as geometry nor as far as colorimetry are concerned. The use of glass whose surface and density are treated is recommended. You have to use an extra white glass with anti-reflecting coating; this avoids any losses due to absorption of 10 % of the luminous flux. Be careful: some glasses may cause problems with 3D passive polarized light. Portholes that are installed in booths serving several auditoria have to meet the security standards,...

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  • 9 Drawing from Densities 9.1 Introduction Simulation consists of drawing from a density, calculating a statistic for each draw, and averaging the results. In all cases, the researcher wants to ¯ calculate an average of the form t = t(ε) f (ε) dε, where t(·) is a statistic of interest and f (·) is a density.

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  • The geometries and spin density distribution of phenolic radicals are investigated by density functional theory (DFT) at the B3LYP level. Rusults are indicated that spin density distribution of phenolic radicals is high at the O and C (para) positions.

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  • The Women’s Health Study, which included almost 40,000 healthy women at least 45 years of age, found that vitamin E supplements did not reduce the risk of heart attack, stroke, cancer, age-related macular degeneration, or cataracts. Although vitamin E supplements were associated with fewer deaths from cardiovascular causes, they did not reduce the overall death rate of study participants.

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  • In reality, the reservoir rock space is a very complex metamerism; however when caculating according to the common way, in many cases, we consider the void structure in the rocks as similar fractal, and use suitable statistical approximate formula to demonstrate the space in form of effective homogene. When researching the layers, we take the rock samples from one layer with different collector parameter. To get a parameter value (grain density, porosity, permeability, saturation etc.

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "Interpreting the variations in xylem sap flux density within the trunk of maritime pine (Pinus pinaster Ait.): application of a model for calculating water flows at tree and stand levels...

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  • As human choriocarcinoma cells display many of the biochemical and morphological characteristics reported for in utero invasive trophoblast cells we have studied cho-lesterol supply from high density lipoproteins (HDL) to these cells.Binding properties of 125 I-labeled HDL sub-class 3 (HDL3)at4C were similar for BeWo, JAr, and Jeg3 choriocarcinoma cell lines while degradation rates at 37C were highest for BeWo.

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  • So, given PT and G it is possible to calculate the power density at any point in the far ®eld that lies in the direction of maximum radiation. A knowledge of the radiation pattern is necessary to determine the power density at other points. The power gain is unity for an isotropic antenna, i.e. one which radiates uniformly in all directions, and an alternative de®nition of power gain is therefore the ratio of power density, from the speci®ed antenna, at a given distance in the direction of maximum radiation, to the power density at the same point, from an isotropic...

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  • Problems – Chapter 1 1.1 Determine the energy spectral density of a square pulse x(t) = rect(t/T). Calculate the normalized energy Ex in the pulse. 1.2 Find the average normalized power in the waveform x(t) = 10cos10t + 20cos20t. 1.3 Determine

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  • It is necessary to have a (large) annotated corpus to build a statistical parser. Acquisition of such a corpus is costly and time-consuming. This paper presents a method to reduce this demand using active learning, which selects what samples to annotate, instead of annotating blindly the whole training corpus. Sample selection for annotation is based upon “representativeness” and “usefulness”. A model-based distance is proposed to measure the difference of two sentences and their most likely parse trees.

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  • Thin and thick blood smears were also collected from participants who accepted malaria testing. Blood slides were stained with Giemsa stain that was prepared by the laboratory in advance of the field work. Parasite densities were calculated by counting the number of asexual stage parasites/200 white blood cells (WBCs), assuming 6000 WBCs/dl of blood. Blood smears were considered negative if no parasites were found after counting 200 fields. An informed consent form was read to the eligible person or parent/responsible adult of the child or teenager ages 15-18 years old.

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  • We studied theoretically and experimentally the transformation, attenuation, and setup due to shoaling and breaking of internal waves in a two-layer fluid system on a uniform slope. An image processing technique was used to illustrate 2D instantaneous displacements of density interface. These results were compared with the calculated values by using the method of characteristics, the simple shoaling model with energy dissipation, and the momentum balance equation based on a radiation stress concept.

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