scholarly journals Improving Accuracy in Studying the Interactions of Seismic Waves with Bottom Sediments

2021 ◽  
Vol 9 (2) ◽  
pp. 229
Author(s):  
Georgy Mitrofanov ◽  
Nikita Goreyavchev ◽  
Roman Kushnarev
Keyword(s):  
Bottom Sediments ◽  
Seismic Waves ◽  
Wide Frequency Range ◽  
Quality Of Data ◽  
High Quality ◽  
Relative Characteristic ◽  
Seabed Evolution ◽  
Marine Seismic ◽  
Very High

The emerging tasks of determining the features of bottom sediments, including the evolution of the seabed, require a significant improvement in the quality of data and methods for their processing. Marine seismic data has traditionally been perceived to be of high quality compared to land data. However, high quality is always a relative characteristic and is determined by the problem being solved. In a detailed study of complex processes, the interaction of waves with bottom sediments, as well as the processes of seabed evolution over short time intervals (not millions of years), we need very high accuracy of observations. If we also need significant volumes of research covering large areas, then a significant revision of questions about the quality of observations and methods of processing is required to improve the quality of data. The article provides an example of data obtained during high-precision marine surveys and containing a wide frequency range from hundreds of hertz to kilohertz. It is shown that these data, visually having a very high quality, have variations in wavelets at all analyzed frequencies. The corresponding variations reach tens of percent. The use of the method of factor decomposition in the spectral domain made it possible to significantly improve the quality of the data, reducing the variability of wavelets by several times.

Why We Ought to Accept the Repugnant Conclusion

Utilitas ◽  
2002 ◽  
Vol 14 (3) ◽  
pp. 339-359 ◽  
Author(s):  
Torbjorn Tannsjo
Keyword(s):  
Quality Of Life ◽  
Well Being ◽  
Derek Parfit ◽  
Worth Living ◽  
Repugnant Conclusion ◽  
High Quality ◽  
Hedonistic Utilitarianism ◽  
Sentient Beings ◽  
Very High

Derek Parfit has famously pointed out that ‘total’ utilitarian views, such as classical hedonistic utilitarianism, lead to the conclusion that, to each population of quite happy persons there corresponds a more extensive population with people living lives just worth living, which is (on the whole) better. In particular, for any possible population of at least ten billion people, all with a very high quality of life, there must be some much larger imaginable population whose existence, if other things are equal, would be better, even though its members have lives that are barely worth living. This world is better if the sum total of well-being is great enough, and it is great enough if only enough sentient beings inhabit it. This conclusion has been considered by Parfit and others to be ‘repugnant’.

Quality Control and Testing of CIPP Liners

2014 ◽  
Vol 1044-1045 ◽  
pp. 1549-1552 ◽  
Author(s):  
Otakar Cigler ◽  
Karel Kubečka ◽  
Petr Waldstein
Keyword(s):  
Quality Control ◽  
Western Europe ◽  
High Efficiency ◽  
New Technologies ◽  
Environmentally Friendly ◽  
Point Of View ◽  
High Quality ◽  
Very High

The construction and rehabilitation of buildings and structures are intervention in the environment of people. Therefore, we are always looking for new technologies that are not only environmentally friendly but also acceptable from the point of view. Speed, flexibility, minimum limit for residents and transport, and also a high efficiency is the reason why more and more in recent years carried out the rehabilitation of sewerage using remediation sleeves. One of the systems of trenchless rehabilitation of sewerage systems used in Western Europe is a system company RELINEEUROPE Alphaliner Liner GmBH & co., the company's Technicians have developed one of the most important practices in the area of trenchless rehabilitation of sewerage systems. A large proportion of the development also has operators and owners of the pipeline. Technology offers very high quality of carried out restorations. This article describes the procedures for ensuring the quality of the used in Germany, which is a world leader in the development, production and use of this technology.

Improving consistency of high quality diagnosis, staging, and treatment using measurement.

2017 ◽  
Vol 35 (8_suppl) ◽  
pp. 217-217
Author(s):  
Shaheena Mukhi ◽  
John Srigley ◽  
Corinne Daly ◽  
Mary Agent-Katwala
Keyword(s):  
Lymph Node ◽  
Quality Of Data ◽  
Group Discussions ◽  
High Quality ◽  
Multidisciplinary Group ◽  
Canadian Provinces ◽  
Node Removal ◽  
Quality Diagnosis ◽  
Culture Of Quality

217 Background: To improve variability in diagnosing and treating cancer resection cases, six Canadian provinces implemented standardized pathology checklists to transition from narrative to synoptic reporting. In clinical practice, pathologists are electronically capturing data on the resected cancer specimens synoptically for breast, colorectal, lung, prostate, and endometrial cases. Though data were collected in a standardized format, consensus based indicators were unavailable to coordinate action across Canada. Objectives: We aimed to develop indicators to measure consistency of high quality cancer diagnosis, staging, prognosis and treatment, and coordinate action. Methods: A literature review was conducted with the input of clinical experts to inform the development of indicators. 50 clinicians from x jurisdictions reviewed, selected and ranked 33 indicators, initially drafted. Clinicians also provided input on the clinical validity of the indicators and set targets based on evidence. Clinicians reviewed the baseline data, confirmed the clinical usefulness of indicators, and assigned indicators into three pioneered domains. Results: 47 indicators were developed and categorized into one of three domains: descriptive, which provide data on intrinsic measures of a patient’s tumour, such as stage or tumour type; process, which measure the quality of data completeness, timeliness and compliance; and clinico-pathologic outcome, which examine surgeon or pathologist effect on the diagnostic pathway, such as margin positivity rates or adequacy of lymph node removal. Examples of indicators are: margin status; lymph node examined, involved and retrieval; histologic type and grade distribution; lympho-vascular invasion; pT3 margin positivity rate. Conclusions: The indicators have set a framework for: measuring consistency and inconsistency in diagnosing and staging cancer; for organizing conversations and multidisciplinary group discussions; and establishing the culture of quality improvement.

Low-Temperature Cathodoluminescence Investigations of High-Quality Zinc Oxide Nanorods

2015 ◽  
Vol 21 (3) ◽  
pp. 564-569 ◽  
Author(s):  
Bartlomiej S. Witkowski ◽  
Lukasz Wachnicki ◽  
Sylwia Gieraltowska ◽  
Anna Reszka ◽  
Bogdan J. Kowalski ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Radiation Effects ◽  
Zno Nanorods ◽  
Zinc Oxide Nanorods ◽  
Nanorod Arrays ◽  
High Quality ◽  
Sem Images ◽  
Oxide Nanorods ◽  
Very High

AbstractWe present results of cathodoluminescence (CL) investigations of high-quality zinc oxide (ZnO) nanorods obtained by an extremely fast hydrothermal method on a silicon substrate. A scanning electron microscopy (SEM) system equipped with CL allows direct comparison of SEM images and CL maps, taken from exactly the same areas of samples. Investigations are performed at a temperature of 5 K. An interlink between sample microstructure and emission properties is investigated. CL confirms a very high quality of ZnO nanorods produced by our method. In addition, the presence of super radiation effects in ZnO nanorod arrays is suggested.

Effect of the areal weight of CNT-doped veils on CFRP electrical properties

2020 ◽  
Vol 54 (20) ◽  
pp. 2677-2685 ◽  
Author(s):  
Kamil Dydek ◽  
Anna Boczkowska ◽  
Paulina Latko-Durałek ◽  
Małgorzata Wilk ◽  
Karol Padykuła ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Epoxy Composites ◽  
High Quality ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Thermal Pressing ◽  
Fibre Reinforced Polymer ◽  
Out Of Autoclave ◽  
Very High

The main goal of this work was the increasing electrical conductivity of carbon-epoxy composites due to implementation of thermoplastic nonwoven veils doped with carbon nanotubes into the composite structure. Nonwovens which differ in areal weight were produced by extrusion of fibers and their thermal pressing. Laminates were fabricated using an out-of-autoclave method and nonwovens were incorporated between each layer of carbon-epoxy unidirectional prepreg. The applied conductive nonwovens improved surface and volume electrical conductivity of carbon fibre reinforced polymer in all directions. Microstructure observations proved a very high quality of the fabricated composites. The implementation of nonwovens affected the crack propagation under loading.

Reply to correspondence “Do big numbers assure high-quality of data?”

2017 ◽  
Vol 4 (9) ◽  
pp. e410
Author(s):  
Claudia Allemani ◽  
Audrey Bonaventure ◽  
Rhea Harewood ◽  
Veronica Di Carlo ◽  
Michel P Coleman
Keyword(s):  
Quality Of Data ◽  
High Quality

scholarly journals Low Multiplicity Sulfur SAD Phasing in the Home lab

2014 ◽  
Vol 70 (a1) ◽  
pp. C607-C607 ◽  
Author(s):  
Severine Freisz ◽  
Juergen Graf ◽  
Matthew Benning ◽  
Vernon Smith
Keyword(s):  
De Novo ◽  
Structural Information ◽  
Low Noise ◽  
Intensity Difference ◽  
Anomalous Scattering ◽  
High Quality ◽  
X Ray ◽  
Sad Phasing ◽  
Very High

Advances in crystallographic hardware and software are enabling structural biologists to investigate more challenging projects. Recent developments in hardware and software are greatly increasing the capabilities of in-house diffraction systems making it more routine to obtain de novo structural information in the home lab. Single-wavelength anomalous diffraction (SAD) techniques with Cu Ka or Ga Ka radiation are now widely used for structure solution even in cases involving weak anomalous scatterers, like sulfur. We have now introduced the D8 Venture solution for structural biology with the PHOTON 100 detector featuring the first CMOS active pixel sensor for X-ray crystallography. Our new microfocus source, the METALJET delivers beam intensity exceeding those of typical bending-magnet beamlines. The very high intensity, the small beam focus and the lower air scatter produced by Gallium Kα radiation help to greatly reduce the background scatter. This provides greater signal to noise essential to identify weak anomalous signal. Due to the very weak anomalous scattering of S, data multiplicities in the order of 40 are typically necessary to obtain phases by S-SAD. Collecting high-multiplicity data minimizes systematic experimental errors to measure with very high accuracy the minute intensity difference between Friedel Pairs (1.0 – 1.5 %) [1]. This requires software which optimizes the collection strategy, for example with respect to overall data collection time to minimize radiation damage. The combination of a brighter, more stable X-ray source with a high sensitivity low noise detector have greatly improved the quality of data collected in-house. The high quality allows successful SAD measurements far away from the absorption edge. Here we present a low multiplicity sulfur-SAD phasing experiment on a small Thaumatin crystal showing the high quality of the data collected on the D8 VENTURE with the METALJET.

The Synthesis and Purification of 4-Dimethylamino-N-Methyl -4-Stilbazolium Tosylate

2013 ◽  
Vol 709 ◽  
pp. 36-39 ◽  
Author(s):  
Shu Jie Zhuang ◽  
Bing Teng ◽  
Li Feng Cao ◽  
De Gao Zhong ◽  
Ke Feng ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Crystal Growth ◽  
Magnetic Resonance ◽  
High Efficiency ◽  
Raw Material ◽  
High Quality ◽  
Ion Exchange Reaction ◽  
Very High

4-dimethylamino-N-methyl -4-stilbazolium tosylate(DAST) was synthesized by the condensation and ion exchange reaction of 4-methyl-N-methyl pyridinium tosylate, 4-N,N-dimethylamino -benzaldehyde and silver p-toluenesulfonate, the reaction procedure was easy with high efficiency. The purity of the product was further improved by successive abstersion and recrystallization. The powder was investigated by Fourier transform infrared spectrum, nuclear magnetic resonance and elemental analysis. The results showed that the quality of the powder as crystal raw material was very high, the product could meet the requirements for crystal growth, the procedure of washing the product by chloroform was important to achieve the high quality.

Première of films arranged by the Shell International Petroleum Company

1961 ◽  
Vol 16 (1) ◽  
pp. 93-94
Keyword(s):  
Natural Science ◽  
Royal Society ◽  
The Other ◽  
High Quality ◽  
Natural Knowledge ◽  
Royal Dutch Shell ◽  
The One ◽  
Petroleum Company ◽  
Very High

On the afternoon of Friday 22 July, a premiere of films was given at the Royal Festival Hall and was followed by a Reception at Tea when Mr F. J. Stephens acted as host for the Royal Dutch/Shell Group of Companies. The programme was introduced by Sir Cyril Flinshelwood, President of the Royal Society, who said: . ‘In the Charter of the Royal Society the improvement of natural knowledge is coupled with that of the useful arts. Now the tradition fortunately exists in this country of good relations between the great industries on the one hand and the cultivators of natural science on the other: or I would prefer to say the very nebulous line that there is between these two branches of activity is evidence of the fact that this part of the Charter has in fact not been ignored. That the Shell Group of Companies, one of the greatest and most important, has made the extremely generous gesture of preparing the very splendid film that you will presently see in honour of the Tercentenary of the Royal Society proves that the tradition that I have spoken of is alive and vigorous. ‘You will presently agree that the film also demonstrates the very high quality of the Film Unit which the Company has maintained for, I understand, something over a quarter of a century.

Mini-block sampler

2016 ◽  
Vol 53 (8) ◽  
pp. 1235-1245 ◽  
Author(s):  
Arnfinn Emdal ◽  
Anders Gylland ◽  
Helene A. Amundsen ◽  
Kristoffer Kåsin ◽  
Michael Long
Keyword(s):  
Laboratory Testing ◽  
High Quality ◽  
Effective Manner ◽  
Starting Point ◽  
Industrial Projects ◽  
Time Required ◽  
Very High

Challenges in obtaining high quality samples of sensitive low-plasticity clay in an effective manner have been overcome by the development of the mini-block sampler. The starting point for the development of the new sampler was the Sherbrooke block sampler that was first introduced in Canada in 1979. Although the Sherbrooke block sampler can produce high quality samples, its use, particularly in industrial projects, has been limited due to the perceived high costs, practical difficulties, and the time required. This paper outlines details of the development and design of the mini-block sampler together with developed techniques for protection and transportation of the samples and preparation of specimens for laboratory testing. The sampler has been used successfully at five Norwegian clay sites. For two of the sites comparative Sherbrooke samples were available and it is shown that the quality of the mini-block samples is very high and is at least as good as that of the Sherbrooke samples. The work also demonstrates that rigging, preparation, and sampling with the mini-block sampler is fast, practical and is not labour intensive. Furthermore the resulting samples are easy to transport and handle, but still provide sufficient material for extensive laboratory testing.

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