Galloway, J M; Dewing, K; Piepjohn, K; Smith, I R. Geological Survey of Canada, Open File 8750, 2020, 44 pages, https://doi.org/10.4095/327426
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_327426.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_327426.jpg" title="Geological Survey of Canada, Open File 8750, 2020, 44 pages, https://doi.org/10.4095/327426" height="150" border="1" /></a>

Rice, J M; Paulen, R C; Ross, M; McClenaghan, M B. Geological Survey of Canada, Open File 8721, 2020, 14 pages, https://doi.org/10.4095/326083
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_326083.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_326083.jpg" title="Geological Survey of Canada, Open File 8721, 2020, 14 pages, https://doi.org/10.4095/326083" height="150" border="1" /></a>

Dafoe, L T; Williams, G L. Geological Survey of Canada, Open File 8702, 2020, 41 pages, https://doi.org/10.4095/321758
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/of8702.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/of8702.jpg" title="Geological Survey of Canada, Open File 8702, 2020, 41 pages, https://doi.org/10.4095/321758" height="150" border="1" /></a>

Rice, J M; McClenaghan, M B; Paulen, R C; Pyne, M D; Ross, M; Campbell, H E. Geological Survey of Canada, Open File 8655, 2020, 11 pages, https://doi.org/10.4095/321471
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/of8655.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/of8655.jpg" title="Geological Survey of Canada, Open File 8655, 2020, 11 pages, https://doi.org/10.4095/321471" height="150" border="1" /></a>

Plakholm, J A; Paulen, R C; Paré, D. Geological Survey of Canada, Open File 8437, 2020, 17 pages, https://doi.org/10.4095/321451
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/of8437.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/of8437.jpg" title="Geological Survey of Canada, Open File 8437, 2020, 17 pages, https://doi.org/10.4095/321451" height="150" border="1" /></a>

Smith, I R; Day, S J A; Paulen, R C; Pearson, D G. Geological Survey of Canada, Open File 8799, 2021, 29 pages, https://doi.org/10.4095/329080
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_329080.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_329080.jpg" title="Geological Survey of Canada, Open File 8799, 2021, 29 pages, https://doi.org/10.4095/329080" height="150" border="1" /></a>

Issler, D R; McDannell, K T; Lane, L S; O'Sullivan, P B; Neill, O K. Geological Survey of Canada, Open File 8821, 2021, 158 pages, https://doi.org/10.4095/328844
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328844.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328844.jpg" title="Geological Survey of Canada, Open File 8821, 2021, 158 pages, https://doi.org/10.4095/328844" height="150" border="1" /></a>

Bingham-Koslowski, N; Miller, M A. Geological Survey of Canada, Open File 8819, 2021, 7 pages, https://doi.org/10.4095/328813
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328813.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328813.jpg" title="Geological Survey of Canada, Open File 8819, 2021, 7 pages, https://doi.org/10.4095/328813" height="150" border="1" /></a>

Davis, W J. Geological Survey of Canada, Open File 8807, 2021, 6 pages, https://doi.org/10.4095/328453
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328453.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_328453.jpg" title="Geological Survey of Canada, Open File 8807, 2021, 6 pages, https://doi.org/10.4095/328453" height="150" border="1" /></a>

Galloway, J M; Bringué, M; Buryak, S D; Reyes, A V; West, C K; Siver, P A. Geological Survey of Canada, Open File 8864, 2022, 29 pages, https://doi.org/10.4095/329615
<a href="https://geoscan.nrcan.gc.ca/images/geoscan/gid_329615.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/gid_329615.jpg" title="Geological Survey of Canada, Open File 8864, 2022, 29 pages, https://doi.org/10.4095/329615" height="150" border="1" /></a>

Implementing performance monitors in your app is very helpful for profiling, debugging and general satisfaction of the more qualified endusers. It's also a non-trivial excercise, to put it mildly. Microsoft have done their part in making it obscure and hard to use, so naturally, we can't leave it alone, can we? This particular implementation only implements raw and delta counters, but that covers almost anything you'll ever need. The basis is there for other types of counters, though, such as instance based counters and high-precision. Both precompiled and full project source is available.

Posted on Tuesday, March 24, 2015

As I sit at my computer tapping out this article, the sun is shining in beautiful Brisbane, capital of Queensland, Australia. We are moving into summer and the sun is up long before I am. When I awake, the house battery is filling up and charging the car. Soon, the ... [continued]

The post Renewables Gallop Ahead Down Under — A Queensland Sample appeared first on CleanTechnica.

Aim/Purpose: The aim of this study was to identify the critical predictors affecting project desertion in Blockchain projects. Background: Blockchain is one of the innovations that disrupt a broad range of industries and has attracted the interest of software developers. However, despite being an open-source software (OSS) project, the maintenance of the project ultimately relies on small core developers, and it is still uncertain whether the technology will continue to attract a sufficient number of developers. Methodology: The study utilized a systematic literature review (SLR) and an expert review method. The SLR identified 21 primary studies related to project desertion published in Scopus databases from the year 2010 to 2020. Then, Blockchain experts were asked to rank the importance of the identified predictors of project desertion in Blockchain. Contribution: A theoretical framework was constructed based on Social Cognitive Theory (SCT) constructs; personal, behavior, and environmental predictors and related theories. Findings: The findings indicate that the 12 predictors affecting Blockchain project desertion identified through SLR were important and significant. Recommendations for Practitioners: The framework proposed in this paper can be used by the Blockchain development community as a basis to identify developers who might have the tendency to abandon a Blockchain project. Recommendation for Researchers: The results show that some predictors, such as code testing tasks, contributed code decoupling, system integration and expert heterogeneity that are not covered in the existing developer turnover models can be integrated into future research efforts. Impact on Society: This study highlights how an individual’s design choices could determine the success or failure of IS projects. It could direct Blockchain crypto-currency investors and cyber-security managers to pay attention to the developer’s behavior while ensuring secure investments, especially for crypto-currencies projects. Future Research: Future research may employ additional methods, such as a meta-analysis, to provide a comprehensive picture of the main predictors that can predict project desertion in Blockchain.

This tutorial will show you how to install PrestaShop 1.7.x. template.

The post PrestaShop 1.7.x. How to install a theme with sample data (manual installation) appeared first on Template Monster Help.

Washington — The Federal Motor Carrier Safety Administration is seeking public comment on a freight-carrier alliance petition regarding the use of hair samples as a drug-testing method for commercial motor vehicle drivers.

Washington — The Federal Motor Carrier Safety Administration has denied a petition calling on the agency to recognize hair samples as an alternative drug-testing method for truckers, reasserting a long-standing position that it lacks the statutory authority to do so.

Arlington, VA – The American Trucking Associations is calling for the federal government to release guidelines and standards regarding the use of hair samples as a drug-testing method for commercial motor vehicle drivers.

Boston — Intended to give small health care employers an “easy-to-use format” for a written exposure control plan, the Massachusetts Department of Public Health has published sample written plans for a respiratory protection program and bloodborne pathogen exposure control.

Küberit USA will debut its new integrated process for profile selection, sample acquisiiton, and resources for specification support at this week’s TISE. 

[International] :
The operator of Japan’s Fukushima Daiichi nuclear power plant said it retrieved a small amount of melted fuel from one of the reactors for the first time since a major earthquake and tsunami crippled the nuclear facility in 2011. According to Japanese media outlets on Thursday, the Tokyo Electric Power ...

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Preparation of biomacromolecules for structural biology studies is a complex and time-consuming process. The goal is to produce a highly concentrated, highly pure product that is often shipped to large facilities with tools to prepare the samples for crystallization trials or for measurements at synchrotrons and cryoEM centers. The aim of this article is to provide guidance and to discuss general considerations for shipping biomacromolecular samples. Details are also provided about shipping samples for specific experiment types, including solution- and cryogenic-based techniques. These guidelines are provided with the hope that the time and energy invested in sample preparation is not lost due to shipping logistics.

Rotations of small- and wide-angle X-ray scattering samples during acquisition are shown to give a drastic improvement in the reliability of the characterization of anisotropic precipitates in metallic alloys.

This paper describes real-time statistical analysis of liquid jet images for SFX experiments at the European XFEL. This analysis forms one part of the automated jet re-alignment system for SFX experiments at the SPB/SFX instrument of European XFEL.

Nanometric precipitates in metallic alloys often have highly anisotropic shapes. Given the large grain size and non-random texture typical of these alloys, performing small- and wide-angle X-ray scattering (SAXS/WAXS) measurements on such samples for determining their characteristics (typically size and volume fraction) results in highly anisotropic and irreproducible data. Rotations of flat samples during SAXS/WAXS acquisitions are presented here as a solution to these anisotropy issues. Two aluminium alloys containing anisotropic precipitates are used as examples to validate the approach with a −45°/45° angular range. Clear improvements can be seen on the SAXS I(q) fitting and the consistency between the different SAXS/WAXS measurements. This methodology results in more reliable measurements of the precipitate's characteristics, and thus allows for time- and space-resolved measurements with higher accuracy.

Despite the increased brilliance of the new generation synchrotron sources, there is still a challenge with high-resolution scanning of very thick and absorbing samples, such as a whole mouse brain stained with heavy elements, and, extending further, brains of primates. Samples are typically cut into smaller parts, to ensure a sufficient X-ray transmission, and scanned separately. Compared with the standard tomography setup where the sample would be cut into many pillars, the laminographic geometry operates with slab-shaped sections significantly reducing the number of sample parts to be prepared, the cutting damage and data stitching problems. In this work, a laminography pipeline for imaging large samples (>1 cm) at micrometre resolution is presented. The implementation includes a low-cost instrument setup installed at the 2-BM micro-CT beamline of the Advanced Photon Source. Additionally, sample mounting, scanning techniques, data stitching procedures, a fast reconstruction algorithm with low computational complexity, and accelerated reconstruction on multi-GPU systems for processing large-scale datasets are presented. The applicability of the whole laminography pipeline was demonstrated by imaging four sequential slabs throughout an entire mouse brain sample stained with osmium, in total generating approximately 12 TB of raw data for reconstruction.

The demand for powder X-ray diffraction analysis continues to increase in a variety of scientific fields, as the excellent beam quality of high-brightness synchrotron light sources enables the acquisition of high-quality measurement data with high intensity and angular resolution. Synchrotron powder diffraction has enabled the rapid measurement of many samples and various in situ/operando experiments in nonambient sample environments. To meet the demands for even higher throughput measurements using high-energy X-rays at SPring-8, a high-throughput and high-resolution powder diffraction system has been developed. This system is combined with six sets of two-dimensional (2D) CdTe detectors for high-energy X-rays, and various automation systems, including a system for automatic switching among large sample environmental equipment, have been developed in the third experimental hutch of the insertion device beamline BL13XU at SPring-8. In this diffractometer system, high-brilliance and high-energy X-rays ranging from 16 to 72 keV are available. The powder diffraction data measured under ambient and various nonambient conditions can be analysed using Rietveld refinement and the pair distribution function. Using the 2D CdTe detectors with variable sample-to-detector distance, three types of scan modes have been established: standard, single-step and high-resolution. A major feature is the ability to measure a whole powder pattern with millisecond resolution. Equally important, this system can measure powder diffraction data with high Q exceeding 30 Å−1 within several tens of seconds. This capability is expected to contribute significantly to new research avenues using machine learning and artificial intelligence by utilizing the large amount of data obtained from high-throughput measurements.

Aerosol science is of utmost importance for both climate and public health research, and in recent years X-ray techniques have proven effective tools for aerosol-particle characterization. To date, such methods have often involved the study of particles collected onto a substrate, but a high photon flux may cause radiation damage to such deposited particles and volatile components can potentially react with the surrounding environment after sampling. These and many other factors make studies on collected aerosol particles challenging. Therefore, a new aerosol sample-delivery system dedicated to X-ray photoelectron spectroscopy studies of aerosol particles and gas molecules in-flight has been developed at the MAX IV Laboratory. The aerosol particles are brought from atmospheric pressure to vacuum in a continuous flow, ensuring that the sample is constantly renewed, thus avoiding radiation damage, and allowing measurements on the true unsupported aerosol. At the same time, available gas molecules can be used for energy calibration and to study gas-particle partitioning. The design features of the aerosol sample-delivery system and important information on the operation procedures are described in detail here. Furthermore, to demonstrate the experimental range of the aerosol sample-delivery system, results from aerosol particles of different shape, size and composition are presented, including inorganic atmospheric aerosols, secondary organic aerosols and engineered nanoparticles.

For cryo-electron tomography (cryo-ET) of beam-sensitive biological specimens, a planar sample geometry is typically used. As the sample is tilted, the effective thickness of the sample along the direction of the electron beam increases and the signal-to-noise ratio concomitantly decreases, limiting the transfer of information at high tilt angles. In addition, the tilt range where data can be collected is limited by a combination of various sample-environment constraints, including the limited space in the objective lens pole piece and the possible use of fixed conductive braids to cool the specimen. Consequently, most tilt series are limited to a maximum of ±70°, leading to the presence of a missing wedge in Fourier space. The acquisition of cryo-ET data without a missing wedge, for example using a cylindrical sample geometry, is hence attractive for volumetric analysis of low-symmetry structures such as organelles or vesicles, lysis events, pore formation or filaments for which the missing information cannot be compensated by averaging techniques. Irrespective of the geometry, electron-beam damage to the specimen is an issue and the first images acquired will transfer more high-resolution information than those acquired last. There is also an inherent trade-off between higher sampling in Fourier space and avoiding beam damage to the sample. Finally, the necessity of using a sufficient electron fluence to align the tilt images means that this fluence needs to be fractionated across a small number of images; therefore, the order of data acquisition is also a factor to consider. Here, an n-helix tilt scheme is described and simulated which uses overlapping and interleaved tilt series to maximize the use of a pillar geometry, allowing the entire pillar volume to be reconstructed as a single unit. Three related tilt schemes are also evaluated that extend the continuous and classic dose-symmetric tilt schemes for cryo-ET to pillar samples to enable the collection of isotropic information across all spatial frequencies. A fourfold dose-symmetric scheme is proposed which provides a practical compromise between uniform information transfer and complexity of data acquisition.

In addressing the challenges faced by laboratories and universities with limited (or no) cryo-electron microscopy (cryo-EM) infrastructure, the ESRF, in collaboration with the Grenoble Institute for Structural Biology (IBS), has implemented the cryo-EM Solution-to-Structure (SOS) pipeline. This inclusive process, spanning grid preparation to high-resolution data collection, covers single-particle analysis and cryo-electron tomography (cryo-ET). Accessible through a rolling access route, proposals undergo scientific merit and technical feasibility evaluations. Stringent feasibility criteria demand robust evidence of sample homogeneity. Two distinct entry points are offered: users can either submit purified protein samples for comprehensive processing or initiate the pipeline with already vitrified cryo-EM grids. The SOS pipeline integrates negative stain imaging (exclusive to protein samples) as a first quality step, followed by cryo-EM grid preparation, grid screening and preliminary data collection for single-particle analysis, or only the first two steps for cryo-ET. In both cases, if the screening steps are successfully completed, high-resolution data collection will be carried out using a Titan Krios microscope equipped with a latest-generation direct electron counting detector coupled to an energy filter. The SOS pipeline thus emerges as a comprehensive and efficient solution, further democratizing access to cryo-EM research.

X-ray Laue microdiffraction aims to characterize microstructural and mechanical fields in polycrystalline specimens at the sub-micrometre scale with a strain resolution of ∼10−4. Here, a new and unique Laue microdiffraction setup and alignment procedure is presented, allowing measurements at temperatures as high as 1500 K, with the objective to extend the technique for the study of crystalline phase transitions and associated strain-field evolution that occur at high temperatures. A method is provided to measure the real temperature encountered by the specimen, which can be critical for precise phase-transition studies, as well as a strategy to calibrate the setup geometry to account for the sample and furnace dilation using a standard α-alumina single crystal. A first application to phase transitions in a polycrystalline specimen of pure zirconia is provided as an illustrative example.

Small-angle scattering (SAS) is a key experimental technique for analyzing nanoscale structures in various materials. In SAS data analysis, selecting an appropriate mathematical model for the scattering intensity is critical, as it generates a hypothesis of the structure of the experimental sample. Traditional model selection methods either rely on qualitative approaches or are prone to overfitting. This paper introduces an analytical method that applies Bayesian model selection to SAS measurement data, enabling a quantitative evaluation of the validity of mathematical models. The performance of the method is assessed through numerical experiments using artificial data for multicomponent spherical materials, demonstrating that this proposed analysis approach yields highly accurate and interpretable results. The ability of the method to analyze a range of mixing ratios and particle size ratios for mixed components is also discussed, along with its precision in model evaluation by the degree of fitting. The proposed method effectively facilitates quantitative analysis of nanoscale sample structures in SAS, which has traditionally been challenging, and is expected to contribute significantly to advancements in a wide range of fields.

Soft X-ray spectroscopy is an important technique for measuring the fundamental properties of materials. However, for measurements of samples in the sub-millimetre range, many experimental setups show limitations. Position drifts on the order of hundreds of micrometres during thermal stabilization of the system can last for hours of expensive beam time. To compensate for drifts, sample tracking and feedback systems must be used. However, in complex sample environments where sample access is very limited, many existing solutions cannot be applied. In this work, we apply a robust computer vision algorithm to automatically track and readjust the sample position in the dozens of micrometres range. Our approach is applied in a complex sample environment, where the sample is in an ultra-high vacuum chamber, surrounded by cooled thermal shields to reach sample temperatures down to 2.5 K and in the center of a superconducting split coil. Our implementation allows sample-position tracking and adjustment in the vertical direction since this is the dimension where drifts occur during sample temperature change in our setup. The approach can be easily extended to 2D. The algorithm enables a factor of ten improvement in the overlap of a series of X-ray absorption spectra in a sample with a vertical size down to 70 µm. This solution can be used in a variety of experimental stations, where optical access is available and sample access by other means is reduced.

NASA’s investment in new instruments to analyze extraterrestrial samples is insufficient to provide for replacement of existing instruments, says a new report from the National Academies of Sciences, Engineering, and Medicine.

(This post is by Charles) Art Owen (Stanford) read our paper on nesting Rhat to assess convergence in the many-short-chains regime of MCMC. He made a lot of great comments and asked some clarification questions. Notably: It wasn’t clear to me … Continue reading →

MC Rokkor 58mm f/1.4 Sample Images The following images are representative of the type of...

The post MC Rokkor 58mm f/1.4 Sample Images appeared first on Alphatracks.

Mass spectrometry-based proteomics data from thousands of HeLa control samples | Scientific Data  Nature.com

Enhanced Sample Multiplexing-Based Targeted Proteomics with Intelligent Data Acquisition  ACS Publications

Repurposed 3D Printer Allows Economical and Programmable Fraction Collection for Proteomics of Nanogram Scale Samples  ACS Publications

Massively parallel sample preparation for multiplexed single-cell proteomics using nPOP  Nature.com

Process validation is becoming ever more important within regulated and non-regulated industries.

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New Annex A on guidelines on selection of representative samples

It came to our attention that our malware sample reporting form was rejecting submissions for quite some time now. The problem has been resolved and members of the public may once again use this form to submit malware samples to us. We apologize for any inconvenience caused.

The debris NASA’s asteroid-touching spacecraft collected could help us learn about the origins of our solar system. But for that to happen, scientists have to protect it from just about everything.

We have added presentation sample design ideas for you to use in businesses and corporate offices including display graphs for a e-commerce warehouse distribution and electrical distribution companies.

Ji Eun Kim
Dec 20, 2020; 0:RA120.002159v1-mcp.RA120.002159
Research

Titles and footnotes do not span the entire width of the page when you use the COLUMNS= option with a value that is greater than 1 with the TAGSETS.RTF_SAMPLE tagset. When a value that is greater than 1 is specified for th