A longstanding battle between an Alberta entrepreneur and a $50-million lottery winner is still raging after a new legal judgment, a securities investigation, allegations of harassment and even duelling ebooks.

In a new twist on oral history, University of Alberta paleontologists have discovered that an Argentinian reptile from 95 million years ago developed a type of tooth enamel that is common in humans and other mammals but rare among reptiles.

The NDP health critic says comments Premier Doug Ford made this week calling out medical officers of health for not getting enough COVID-19 testing done are uncalled for.

Tensions are rising on Manitoulin Island because a First Nation is stopping travellers on provincial highways that go through the community. But opinions on M'Chigeeng's attempt to protect its people from COVID-19 are not divided along racial lines. 

A doctor on Manitoulin Island is encouraging seasonal residents to stay home and not to come visit during the COVID-19 pandemic.

A new study facilitated by the Workplace Safety and Insurance Board of Ontario states miners who were forced to inhale an aluminum powder were found to have a higher risk of Parkinson’s disease.

The Porcupine Health Unit is reporting the fifth COVID-19 related death in its area.

Business owners throughout northern Ontario will have the chance Friday morning to speak directly with federal Economic Development Minister Mélanie Joly.

The Porcupine Health Unit is declaring a COVID-19 outbreak at a long-term care home in Iroquois Falls.

Those in Sudbury may have had a few choice words when waking up Friday morning after a snowfall overnight.

The following is a guest post by Hanna Soltys, Reference Librarian, Prints & Photographs Division. The post was written with the help of Sara W. Duke, Curator of Popular and Applied Graphic Art.   While professional baseball’s Opening Day will take place at a later date, the spirit and excitement of the day still live […]

The following is a post by Kristi Finefield, Reference Specialist in the Prints & Photographs Division, and member of the Picture This blog team. Images have a way of opening our eyes to new aspects of a well-known story. When I think of singer Marian Anderson, an image of her performing at the Lincoln Memorial […]

Visitors to the 1900 Paris Exposition would have had the opportunity to view an extraordinary display of photographs, charts, publications and other items meant to demonstrate the progress and resilience of African Americans in the United States, only a few decades after the abolition of slavery. The materials were assembled by African American intellectuals Thomas J. […]

The following is a guest post by Katherine Blood, Curator of Fine Prints, Prints & Photographs Division. As the Library of Congress marks its 220th year of serving the nation, the publication of a new guide tells two stories: how staff have for decades worked with art professionals to build the collections and how by […]

The following is a post by Kristi Finefield, Reference Specialist in the Prints & Photographs Division, and member of the Picture This blog team. As the Library of Congress marks its 220th year, we take the opportunity to explore one example of its efforts to sustain and celebrate the arts in its physical spaces. Above […]

Differential detergent fractionation of cells is a rapid method for extraction of cytoplasmic and nuclear proteins in preparation of an immunoprecipitation. This method can be applied for use of adherent or suspension cells and can significantly reduce nonspecific background in an immunoprecipitation by separation of cellular compartments into individual fractions. The lysis of cells by differential detergents permits the rapid extraction of proteins from the cytoplasm (digitonin), the cytoplasmic membranes, and organelles (Triton X-100), and nucleoplasm (Tween/DOC), facilitated through the use of distinct extraction buffers. Cytoplasmic and nuclear matrix proteins as well as DNA are left behind during the detergent-based extraction.

Over many years, the Xenopus laevis embryo has provided a powerful model system to investigate how mechanical forces regulate cellular function. Here, we describe a system to apply reproducible tensile and compressive force to X. laevis animal cap tissue explants and to simultaneously assess cellular behavior using live confocal imaging.

Before probing blots for the presence of an antigen, the total composition of the transferred proteins can be determined by staining the nitrocellulose or polyvinylidene fluoride (PVDF) membrane. Staining for proteins is useful to determine the position of the non-prestained molecular weight markers or individual lanes on the gel and to ensure that efficient transfer has occurred. It can be also used to verify equal loading of the samples in the gel when a comparison of the protein of interest between the different samples is important. The conventional procedures such as Coomassie Blue and silver staining methods used for staining polyacrylamide gels are incompatible with immunoblotting. Ponceau S is the more common staining method in immunoblotting protocols because it is compatible with antibody–antigen binding, is cost efficient, and provides a good contrast between the stained bands and background. In this protocol, nitrocellulose or PVDF membrane is rinsed with ultrapure H₂O after the transfer of proteins. Ponceau S dye is applied as an acidic aqueous solution, and the proteins on the membrane are stained with red color. The membrane is briefly destained with water and can be photographed or scanned to obtain the image of the total protein staining. Individual lane positions or the molecular weight standards can be marked with a pencil, if required.

Colloidal gold–antibody conjugates are easy to prepare and are an excellent choice for microscopic applications. Colloidal gold is an aqueous suspension of nanometer-sized particles of gold. Typically, chloroauric acid, HAuCl₄, is reduced with dilute solutions of sodium citrate, as described here. This will cause the gold to form small aggregates that will associate with proteins. Gold particles of specific sizes can be isolated and differentiated microscopically, allowing these particles to be used for multiple-label experiments. Colloidal gold-labeled antibodies are widely used in electron microscopy (EM), and can be used for light microscopy but require additional steps (silver enhancement).

Successful modification of the bacterial artificial chromosome (BAC) after two-step BAC engineering is confirmed in two separate polymerase chain reactions (PCRs). The first reaction (5' co-integrate PCR) uses a forward 5' co-integrate primer (a sequence located upstream of the 5' end of the A-box) and a reverse 3' primer on the vector (175PA+50AT) or within the reporter sequence or mutated region as appropriate. The second reaction (3' co-integrate PCR) uses a forward 5' primer on the recA gene (RecA1300S) and a reverse 3' co-integrate primer (a sequence located downstream from the 3' end of the B-box). Those colonies shown to be positive in PCR analysis are further tested for sensitivity to UV light. After the resolution, colonies that have lost the excised recombination vector including sacB and recA genes become UV light sensitive.

Bacterial artificial chromosome (BAC) clones are rendered electrocompetent and transformed with the recombinant shuttle vector, pLD53SCAB/AB-box. Cointegrates are selected by growth on chloramphenicol and ampicillin to ensure recombination of the shuttle vector into the BAC.

Plasmid DNA is prepared from the recombinant shuttle vector pLD53.SCAB/A-B created by cloning of the A and B homology arms for two-step bacterial artificial chromosome (BAC) engineering. To confirm that the A-box and B-box arms have been successfully incorporated into pLD53.SCAB, the pattern of enzyme digestion of the modified plasmid is compared with that of the unmodified pLD53.SCAB. Once the shuttle vector is shown to carry the proper sequences, it is ready for transfer into the BAC host.

This protocol describes the preparation of the shuttle vector before its introduction into bacterial artificial chromosome (BAC) host cells for BAC two-step engineering. The homology arm sequences, prepared previously, are introduced by ligation into the digested shuttle vector DNA to provide sites for recombination within the BAC clone. Crude lysates of individual bacterial transformants serve as templates in polymerase chain reaction (PCR) analysis to confirm the presence of the homology arms in the recombinant shuttle vector.

The 700-bp A homology arm (A-box) and the 700-bp B homology arm (B-box) are amplified by polymerase chain reaction (PCR) using purified bacterial artificial chromosome (BAC) DNA as template for two-step BAC engineering. The resulting A-box PCR product contains an AscI site at its 5' end (the 5' primer incorporates an AscI site, and the 3' primer does not incorporate any restriction sites). The B-box PCR product contains an XmaI site at its 3' end (the 5' primer does not incorporate any restriction sites, and the 3' primer incorporates an XmaI site). The amplification products are then digested with the appropriate restriction endonucleases to render them suitable for cloning into the shuttle vector.

In two-step bacterial artificial chromosome (BAC) engineering, a single plasmid is introduced into the BAC-carrying cell lines. The shuttle vector pLD53.SCAB (or pLD53.SCAEB) carries the recA gene and the R6K origin, which requires the protein to replicate. PIR2 cells, expressing , are typically used for the amplification of the vector and maintain about 15 copies/cell of the donor vector, which is relatively stable in this host.

We assess the dynamics of volatility spillovers among global systemically important banks (G-SIBs). We measure spillovers using vector-autoregressive models of range volatility of the equity prices of G-SIBs, together with machine learning methods. We then compare the size of these spillovers with the degree of systemic importance measured by the Basel Committee on Banking Supervision's G-SIB bucket designations.

CPMI report: Payment aspects of financial inclusion in the fintech era, April 2020

FSI Briefs No 2, April 2020. Guidance issued by financial sector authorities in response to the Covid-19 crisis seems to suggest that international efforts to come up with operational resilience standards should take into account at least the following elements: Critical/essential employees: identifying the critical functions and employees that support important business services, as well as ensuring employees' safety and that they can safely resume their duties (remotely, if necessary); IT infrastructure: ensuring that IT infrastructure can support a sharp increase in usage over an extended period and taking steps to safeguard information security; Third-party service providers: ensuring that external service providers and/or critical suppliers are taking adequate measures and are sufficiently prepared for a scenario in which there will be heavy reliance on their services; Cyber resilience: remaining vigilant in order to identify and protect vulnerable systems, and detect, respond and recover from cyber attacks..

Using a cross-country sample of bank-dependent public fi rms we study the international spillovers of a change in banking regulation on corporate borrowing. For identi cation we examine how US rms' liabilities vis-a-vis banks, non-bank lenders and bond markets evolve after an increase in capital requirements implemented by the European Banking Authority (EBA) in 2011. We find that US firms experience a reduction in credit lines but not in term loans from EU banks.

FSI Briefs No 3, April 2020. In response to the 2007-09 Great Financial Crisis (GFC), accounting standard setters introduced a new methodology to value loans based on expected credit losses (ECL). The previous approach, based on incurred losses, was viewed as procyclical and inconsistent with prudential objectives. In the wake of the Covid-19 pandemic, several prudential authorities and the Basel Committee on Banking Supervision (BCBS), introduced a series of measures to clarify how banks should consider various public and private debt relief programmes in their ECL estimates and in their calculation of regulatory capital. These measures are intended to incentivise banks to continue supporting the real economy, while reducing pressure on banks' ECL provisions, earnings and regulatory capital. Supervisory initiatives that provide capital relief should be augmented by severe constraints on the payment of dividends, bonuses and share buybacks. These joint actions will simultaneously expand banks' lending capacity and enhance their ability to absorb losses. Prudential authorities face difficult trade-offs as they confront the most severe economic crisis in modern times. Encouraging the use of flexibility in applicable accounting standards, while preserving market trust and transparency in the reported financial statements of banks, will be key in fostering both economic and financial stability.

This paper reviews post-crisis financial regulatory reforms, examines how they fit together and identifies open issues. Specifically, it takes stock of the salient new features of bank and CCP international standards within a unified analytical framework.

BIS Bulletin No 9, April 2020. By allowing banks to run down some of their buffers, policymakers are sending a strong signal about their resolve to lessen the economic fallout from the pandemic. Such prudential measures complement the main policy levers: monetary and fiscal instruments. To avoid a reduction in credit to the real economy, authorities need to ensure that banks have the capacity and willingness to make use of the flexibility afforded by the buffer release. Payout restrictions on banks and risk-sharing between banks and the public sector will be key. For banks to continue playing a positive role in the supply of funding during the recovery, they should maintain usable buffers for a long period, as losses from a severe recession will take time to materialise.

Recent literature has highlighted that international trade is mostly priced in a few key vehicle currencies, and is increasingly dominated by intermediate goods and global value chains (GVCs). Taking these features into account, this paper reexamines the business cycle dynamics of international trade and its relationship with monetary policy and exchange rates.

The National Book Festival Presents series was created to provide a book festival experience to lovers of the event on a year-round basis. Because these programs can no longer be held at the Library, we are offering a virtual multipart series, with authors who have written books about widespread diseases and the worldwide response to them.

Our ongoing celebration of the Library of Congress National Book Festival continues with Poets Laureate Tracy K. Smith and Robert Hass discussing the making of poetry, the position of Poet Laureate and their new books, "American Journal: Fifty Poems for Our Time" (edited by Smith) and "A Little Book on Form: An Exploration into the Formal Imagination of Poetry" (Hass), on the Poetry & Prose stage at the 2018 Festival.

Our ongoing celebration of the Library of Congress National Book Festival continues with presidential scholar Annette Gordon-Reed discussing "The Hemingses of Monticello: An American Family" on the Special Programs stage at the 2015 Festival.

Our ongoing celebration of the Library of Congress National Book Festival continues with crime writer Patricia Cornwell discussing "Red Mist,” her 19th Kay Scarpetta novel, on the Fiction & Mystery stage at the 2012 Festival.

Our ongoing celebration of the Library of Congress National Book Festival continues with young adult and fantasy author Leigh Bardugo discussing "Crooked Kingdom" on the Genre Fiction stage at the 2018 Festival. This post includes prompts for writing and thinking that young readers, families and teachers can use to explore the author and the author’s work—recommended for ages 13+.

Our ongoing celebration of the Library of Congress National Book Festival continues with former Secretary of State Condoleezza Rice discussing "Democracy: Stories from the Long Road to Freedom" on the Main Stage at the 2017 Festival.

Our ongoing celebration of the Library of Congress National Book Festival continues with two-time Pulitzer Prize-winning novelist Colson Whitehead discussing "Zone One" on the Poetry & Prose stage at the 2012 Festival.

Our ongoing celebration of the Library of Congress National Book Festival continues with historian Michael Beschloss discussing “Presidents of War” on the Main Stage at the 2019 Festival.

Our ongoing celebration of the Library of Congress National Book Festival continues with crime and mystery writer Karin Slaughter discussing "Broken," part of her Will Trent series, on the Fiction & Mystery stage at the 2010 Festival.

Our ongoing celebration of the Library of Congress National Book Festival continues with actor and author Neil Patrick Harris discussing "The Magic Misfits: The Minor Third." The event, part of the new year-long National Book Festival Presents series, took place in the Library’s Coolidge Auditorium. This post includes prompts for writing and thinking that young readers, families and teachers can use to explore the author and the author’s work—recommended for ages 8+.

British product designer Lucy Hughes has invented a biodegradable plastic made from fish offcuts

Architects and planners from the Netherlands are advising coastal cities worldwide on how to live with water

From gas stations to public libraries, these celebrity architect-designed buildings are worth a road trip

Press release about the Basel Committee publishing consultation paper on revisions to the credit valuation adjustment risk framework, 28 November 2019.

Press release: CPMI report sets out considerations for developers of wholesale digital tokens, 12 December 2019