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Механика. Динамика          Автор Muhammad S.          Издательство Книга по Требованию

Laser Assisted Isotopic Studies using Time of Flight Mass Spectrometer. Lithium isotopes
92 стр. мягкая обложка

автор:Muhammad S.
издательство: Книга по Требованию
цена:2006 руб
- нет в наличии

The technique, therefore, requires an ultra narrow line width exciting laser because of the small isotopic shift. This technique is a combination of a well-collimated atomic beam source, a linear Time of Flight (TOF) mass spectrometer and dye lasers. It also made possible the simultaneous measurement of photoionization cross section of the excited states of the isotopes and their corresponding number densities even if they have not been selectively excited. The line width of the exciter laser determines the selectivity of an isotope of interest using multi step photoionization. In this work, we have demonstrated a new experimental approach with which we can resolve the very close lying energy levels even if they have not been selectively excited. The experimental work contained in this book may helpful in the fusion research program. Laser isotope separation promised a popular method for the enrichment of the isotope of interest, owing to its high selectivity and low cost.

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Miracles of the Gods

When I began I had no idea what an incredible mass of printed matter would accumulate. I have been selective, choosing characteristic cases to stand for countless others, so that I can offer explanations of the phenomena on the basis of this extensive sample. When I say that the estimated number of visions in the Christian world alone is over 40,000 (!) you can imagine how varied the material is. Riding a bold steeplechase through history down to the present day I am going to present the reader with documented cases of visions. Not until the vast terrain has been cleared of undergrowth will it be possible to show what conclusions can be drawn, and what explanations can be offered or are theoretically conceivable. * * * Every year on 16th August in Iborra, Spain, the faithful pray to a blood-soaked cloth. This relic (*) has been the object of religious veneration since the year 1010. At that time the Right Reverend Bernard Olivier is supposed to have been assailed by doubts when during the mass the tintinnabulum (bell used in the mass) rang to transform the red wine into Christ's blood ...

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512 руб
Раздел: Вакуумные пакеты

Механика. Динамика

A study using Time Resolved Photo? Emission Electron Microscopy in combination with X? ray Circular Dichroism (TR-PEEM-XMCD) Magnetization Dynamics in Spin Valves.
Objects of study in this study are antiparallel pinned synthetic spin valves as they are extensively used as read heads in today' s magnetic storage devices. Results are reported of element specific Time Resolved Photo? Emission Electron Microscopy (TR? PEEM) to image the magnetization dynamics of the free layer alone via X? ray Circular Dichroism (XMCD). The observation of magnetic switching processes in the gigahertz range became possible due to the joined effort of producing ultra? short X? ray pulses at BESSY II and optimizing the wave guide design of the samples for high frequency electromagnetic excitation. It could be shown that the magnetization dynamics of the free layer of a GMR spin valve stack deviates significantly from a simple phase coherent rotation. At the same time advanced magnetic recording schemes push the magnetic switching time into the gyromagnetic regime. Key technology applications like magnetoresistive sensors or the Magnetic Random Access Memory (MRAM) require reproducible magnetic switching mechanisms. i. e. predefined remanent states.
          2360 руб
Laser Desorption Postionization Coupled to Time-Of-Flight MS. Instrumentation and Application to Dental Materials
In addition, the laser system, timing schemes and instrument calibration are described.
          1995 руб
Qualitative and Quantitative Proteome Studies using Mass Spectrometry. A Study on the Mitochondrial Proteome
We focused on the development and refinement of a proteomic workflow aiming to produce a high quality quantitative survey of the mitochondrial proteome.
          2006 руб
Studies Using the CDF Detector A Measurement of Inclusive Jet Production at Tevatron.
At the Tevatron at Fermilab, protons and antiprotons collide at very high energy.
          2414 руб
A Measurement of the Inclusive Photon Production at Tevatron. Studies using isolated photons with the CDF detector at Fermilab
The cross section is measured up to 400 GeV/c, and tests the theoretical predictions over 6 orders of magnitude, one order of magnitude more than in previous results.
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Experiments on Fiber-Coupled Diode Laser Superheating in Laser-Assisted Machining of Silicon Nitride Understanding Laser Superheating in LAM of Silicon Nitride.
This book contains the research conducted on LAM of ceramics that helps develop a complete understanding of various laser and machining parameters in LAM of ceramics, and makes some important conclusions that help in continuing the research for a fully developed LAM of ceramics system.
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Inference About Masking Probabilities in the Competing Risks Model. Simulation Studies using Bayesian Approach
When a failure occurs, procedures are exploited in an attempt to attain a definitive cause of failure.
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Development of a Time-Domain Terahertz Spectrometer. using Photoconductive Antenna Detection Method
Using this method we were able to show that the THz power generated and detected in these systems is on the order of microwatts.
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Miniaturization of the Ion Trap Mass Spectrometer. Construction and Characterization
The objective is to miniaturize mass spectrometers in weight, size, and power consumption while retaining the analytical capabilities of mass spectrometry at the same time.
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Helium mass spectrometer
A helium mass spectrometer is an instrument commonly used to detect and locate small leaks.
          1313 руб
Lattice Formation in Liquefaction. A Study Using Numerically Evaluated Particle Dynamics
It also provides an accurate discrete element method for evaluating particle dynamics.
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The Information Systems and Technology Innovation Process. A study using and agent-based approach
With an ever changing landscape and a fast growing IS/IT offer, the decision do adopt or not a particular innovation is one of strategic importance for the survivability of the firm.
          1979 руб
Phase Slip Fluctuations in Low-Dimensional Superconductors. A Numerical Study Using the String Method
According to the Mermin-Wagner theorem, superconducting long-range order can not be stabilized in strictly low-dimensional systems at any finite temperature.
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A study using Orconectes quinebaugensis Male Dominance and Sexual Selection in the Crayfish.
It has been suggested that males compete primarily for access to mates, with all other forms of competition being necessary only so far as they contribute to this ultimate goal.
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A Study Using National Health And Nutrition Examination Survey 2001-2002 and 2003-2004 VITAMIN D STATUS OF AMERICAN ADULTS AGE 18 YEARS AND OLDER.
These participants were then analyzed to assess serum 25(OH)D3 levels.
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Valuing a Marine Protected Area in Belize. A case study using Contingent Valuation Methodology to determine Tourists’ Willingness To Pay (WTP)
While the economic importance of Belize’s natural resources directly and indirectly impacts its Gross Domestic Product, management and sustainable use is not equally given its due relevance.
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Effects of Coaching on Self-regulated Learning Strategy Use and Grades. A Study Using Coaching to Improve Self-regulated Learning Strategy Use and Academic Performance in a Entry-level Nursing Course
The primary purpose of this mixed methods randomized two group (experimental and control group) study was to determine if coaching in the use of self-regulated learning strategies (SRLS) would result in better grades and increased attitudes toward SRLS.
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On Some Positive Effects of the Swirling Flow for Continuous Casting. Numerical study on heat and mass transfer of steel casting billet moulds
The model is used to study the effects of changing nozzle tilt angle and mould aspect ratio on heat and mass transfer in the round and square moulds.
          2006 руб
A Study of Business Ethical Practices in Australian Organisations. A Multiple Case Study Using Critical Incidence to Measure how Ethical Decisions are Made
Face to face interviews were conducted using critical incidents and the findings were triangulated using a semi- structured focus group.
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Data Analysis for Mass Spectrometry-Based Proteomics. Novel Data Analysis Methods and Algorithms for Identification of Peptides and Proteins by Use of Tandem Mass Spectrometry
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