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.

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’.

scholarly journals An Environmental Scan and Evaluation of Home Dialysis Quality Indicators Currently Used in Canada

2020 ◽  
Vol 7 ◽  
pp. 205435812097739
Author(s):  
Lisa Dubrofsky ◽  
Ali Ibrahim ◽  
Karthik Tennankore ◽  
Krishna Poinen ◽  
Sachin Shah ◽  
...  
Keyword(s):  
Quality Improvement ◽  
Quality Of Care ◽  
Peritoneal Dialysis ◽  
Quality Indicators ◽  
Patient Centered ◽  
High Quality ◽  
Home Dialysis ◽  
Environmental Scan ◽  
Starting Point

Background: Quality indicators are important tools to measure and ultimately improve the quality of care provided. Performance measurement may be particularly helpful to grow disciplines that are underutilized and cost-effective, such as home dialysis (peritoneal dialysis and home hemodialysis). Objective: To identify and catalog home dialysis quality indicators currently used in Canada, as well as to evaluate these indicators as a starting point for future collaboration and standardization of quality indicators across Canada. Design: An environmental scan of quality indicators from provincial organizations, quality organizations, and stakeholders. Setting: Sixteen-member pan-Canadian panel with expertise in both nephrology and quality improvement. Patients: Our environmental scan included indicators relevant to patients on home dialysis. Measurements: We classified existing indicators based on the Institute of Medicine (IOM) and Donabedian frameworks. Methods: To evaluate the indicators, a 6-person subcommittee conducted a modified version of the Delphi consensus technique based on the American College of Physicians/Agency for Healthcare Research and Quality criteria. We shared these consensus ratings with the entire 16-member panel for further examination. We rated items from 1 to 9 on 6 domains (1-3 does not meet criteria to 7-9 meets criteria) as well as a global final rating (1-3 unnecessary to 7-9 necessary) to distinguish high-quality from low-quality indicators. Results: Overall, we identified 40 quality indicators across 7 provinces, with 22 (55%) rated as “necessary” to distinguish high quality from poor quality care. Ten indicators were measured by more than 1 province, and 5 of these indicators were rated as necessary (home dialysis prevalence, home dialysis incidence, anemia target achievement, rates of peritonitis associated with peritoneal dialysis, and home dialysis attrition). None of these indicators captured the IOM domains of timely, patient-centered, or equitable care. Limitations: The environmental scan is a nonexhaustive list of quality indicators in Canada. The panel also lacked representation from patients, administrators, and allied health professionals. Conclusions: These results provide Canadian home dialysis programs with a starting point on how to measure quality of care along with the current gaps. This work is an initial and necessary step toward future collaboration and standardization of quality indicators across Canada, so that home dialysis programs can access a smaller number of highly rated balanced indicators to motivate and support patient-centered quality improvement initiatives.

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.

scholarly journals Am Bestehenden weiterdenken

ARCHALP ◽  
2019 ◽  
Vol 2 NS (Issue 2 Ns, July 2019) ◽  
pp. 105-113
Author(s):  
Walter Angonese
Keyword(s):  
Quality Assurance ◽  
Architectural Design ◽  
High Quality ◽  
Existing Structures ◽  
Starting Point ◽  
Awareness Raising ◽  
The Individual ◽  
The Way

Isn’t the existent always the outcome of any creative confrontation? Is such a creative discussion really out of a contextual consideration? Isn’t every context – even a purely spiritual one – part of the heritage? In his contribution, Walter Angonese reflects on the potential of the pre-existent on the architectural project. He believes in “thinking ahead” and consequently in “building on”, and that is why the question of the relevance of existing structures to architectural design has been clarified. However, he also believes that the quality of the existent can only be improved thanks to an increased habit of awareness and not only following and blaming the prescribed laws for quality assurance. This awareness raising gives responsibility to the individual within a society, but also makes him responsible for his own actions. Building in an alpine context – like any building, by the way – is therefore a question of responsibility, towards oneself and towards one’s society. If the architectural idea is built by leading it from an intuition about a cultural reflection to what one can call a real “architectural idea” (and not merely any intuition), then that is an important first step for a high-quality “continuing construction” of the existing. Only the heritage and the existent can become a meaningful starting point of the project.

NIMG-55. AUGMENTED INTELLIGENCE IS SUPERIOR TO ARTIFICIAL INTELLIGENCE! HUMAN-COMPUTER SYNERGY FOR GENERATING HIGH QUALITY GLIOBLASTOMA SUB-REGION SEGMENTATIONS

2021 ◽  
Vol 23 (Supplement_6) ◽  
pp. vi141-vi142
Author(s):  
Satyam Ghodasara ◽  
Ujjwal Baid ◽  
Spyridon Bakas ◽  
Michel Bilello ◽  
Suyash Mohan
Keyword(s):  
Artificial Intelligence ◽  
Diagnostic Methods ◽  
High Quality ◽  
Temporal Lobes ◽  
Signal Abnormality ◽  
Synergistic Approach ◽  
Mri Scans ◽  
Mri Sequences ◽  
Time Required

Abstract PURPOSE Artificial intelligence (AI) is poised to improve diagnostic methods in neuro-oncologic imaging and contribute to patient management by analyzing pre-operative MRI scans. AI results are better interpreted by compartmentalizing glioblastoma into distinct sub-regions, i.e., necrotic core, enhancing tumor, peritumoral T2/FLAIR signal abnormality (ED). Manual delineation of these sub-regions by expert neuroradiologists is impractical, requiring hours for intricate cases. Computer-aided segmentation (CAS) can mitigate this issue but is limited in the quality of the produced segmentations. We hypothesize that CAS followed by expert refinements is more practical/time-efficient. METHODS CAS was used on a total of 359 glioblastoma patients with four MRI sequences (T1, T1Gd, T2, T2-FLAIR) from each patient. All segmentations were sent to expert neuroradiologist annotators for manual refinements. Once refined, our team including two senior attending neuroradiologists with ≥13 years of experience each, reviewed and either approved or returned the segmentations to individual annotators for further refinements. Total time required to refine and review the finalized segmentations was measured. RESULTS Following one round of refinements by expert annotators, 244/359 (68%) segmentations were approved by our team while 115/359 (32%) segmentations contained a variety of errors that required a second round of refinements. The most common observed errors were 1) missed ED in the anterior/inferior temporal lobes and corpus callosum (37/115 cases, 32%) and 2) erroneous segmentation of normal choroid plexus and blood vessels (14/115 cases, 12%). The expert annotators required 120 hours to refine all 359 segmentations, and our team required 26 additional hours to review them, resulting in 24 minutes/segmentation following CAS. CONCLUSION Our findings support the value of a well-communicated annotation protocol to coordinate CAS and expert annotators. With CAS, our team and expert annotators rapidly finalized segmentations for 359 glioblastoma patients, demonstrating the value of a synergistic approach to creating high quality tumor sub-region segmentations.

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.

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.

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