U.S. President Donald Trump on Thursday described a valet of his reportedly testing positive for the coronavirus as "one of those things" and said that he and Vice President Mike Pence have since been tested and they are both negative.

With the spread of COVID-19, organizations worldwide have introduced remote working, which is having a direct impact on cybersecurity and the threat landscape.

Since the beginning of 2020, due to the COVID-2019 pandemic, life has shifted almost entirely to the Web. This is reflected in the goals of recent DDoS attacks, with the most targeted resources in Q1 being websites of medical organizations, delivery services, and gaming and educational platforms.

Title: Heart Attacks in the Morning Are More Severe
Category: Health News
Created: 4/28/2011 11:01:00 AM
Last Editorial Review: 4/28/2011 12:00:00 AM

Title: Heart Attack Survival Varies Widely Among Hospitals, Study Finds
Category: Health News
Created: 4/30/2012 6:06:00 PM
Last Editorial Review: 5/1/2012 12:00:00 AM

Title: Kelly the Robot Helps Kids Tackle Autism
Category: Health News
Created: 5/1/2013 12:36:00 PM
Last Editorial Review: 5/2/2013 12:00:00 AM

Title: Pediatricians Should Plan for Anthrax Attack, U.S. Experts Say
Category: Health News
Created: 4/28/2014 9:35:00 AM
Last Editorial Review: 4/28/2014 12:00:00 AM

Title: High-Fiber Diet May Aid Heart Attack Survivors
Category: Health News
Created: 4/29/2014 7:36:00 PM
Last Editorial Review: 4/30/2014 12:00:00 AM

Title: Where You're Treated for Heart Attack Matters
Category: Health News
Created: 4/30/2015 12:00:00 AM
Last Editorial Review: 4/30/2015 12:00:00 AM

Title: Too Many People Still Ignore Heart Attack Risks: Study
Category: Health News
Created: 5/3/2017 12:00:00 AM
Last Editorial Review: 5/4/2017 12:00:00 AM

Title: Speed of Heart Attack Treatment Can Vary by State
Category: Health News
Created: 5/1/2018 12:00:00 AM
Last Editorial Review: 5/2/2018 12:00:00 AM

Title: Cardiac Rehab Boosts Quality of Life After Heart Attack: Study
Category: Health News
Created: 4/27/2020 12:00:00 AM
Last Editorial Review: 4/28/2020 12:00:00 AM

Title: During Coronavirus Pandemic, Don't Ignore Symptoms of Heart Attack, Stroke
Category: Health News
Created: 4/30/2020 12:00:00 AM
Last Editorial Review: 4/30/2020 12:00:00 AM

Title: Key Areas of the Brain Triggered in Recent Heart Attack Survivors
Category: Health News
Created: 5/5/2020 12:00:00 AM
Last Editorial Review: 5/6/2020 12:00:00 AM

Title: Could Your Contact Lenses Track, Treat Your Diabetes?
Category: Health News
Created: 4/24/2020 12:00:00 AM
Last Editorial Review: 4/27/2020 12:00:00 AM

Title: Heart Attacks, Strokes Are Declining Among People With Diabetes
Category: Health News
Created: 5/1/2020 12:00:00 AM
Last Editorial Review: 5/4/2020 12:00:00 AM

Title: Your Best Bet Against Heart Attack, Stroke? Lower Blood Pressure
Category: Health News
Created: 2/20/2020 12:00:00 AM
Last Editorial Review: 2/21/2020 12:00:00 AM

Recent earthquakes involving complex multi-fault rupture have increased our appreciation of the variety of rupture geometries and fault interactions that occur within the short duration of coseismic slip. Geometrical complexities are intrinsically linked with spatially heterogeneous slip and stress drop distributions, and hence need incorporating into seismic hazard analysis. Studies of exhumed ancient fault zones facilitate investigation of rupture processes in the context of lithology and structure at seismogenic depths. In the Gairloch Shear Zone, NW Scotland, foliated amphibolites host pseudotachylytes that record rupture geometries of ancient low-magnitude (≤M_W 3) seismicity. Pseudotachylyte faults are commonly foliation parallel, indicating exploitation of foliation planes as weak interfaces for seismic rupture. Discordance and complexity are introduced by fault segmentation, stepovers, branching and brecciated dilational volumes. Pseudotachylyte geometries indicate that slip nucleation initiated simultaneously across several parallel foliation planes with millimetre and centimetre separations, leading to progressive interaction and ultimately linkage of adjacent segments and branches within a single earthquake. Interacting with this structural control, a lithological influence of abundant low disequilibrium melting-point amphibole facilitated coseismic melting, with relatively high coseismic melt pressure encouraging transient dilational sites. These faults elucidate controls and processes that may upscale to large active fault zones hosting major earthquake activity.

Supplementary material: Supplementary Figures 1 and 2, unannotated versions of field photographs displayed in Figures 4a and 5 respectively, are available at https://doi.org/10.6084/m9.figshare.c.4573256

Thematic collection: This article is part of the SJG Collection on Early-Career Research available at: https://www.lyellcollection.org/cc/SJG-early-career-research

Nickel is a ubiquitous metal added to jewelry and metallic substances for its hardening properties and because it is inexpensive. Estimates suggest that at least 1.1 million children in the United States are sensitized to nickel. Nickel allergic contact dermatitis (Ni-ACD) is the most common cutaneous delayed-type hypersensitivity reaction worldwide. The incidence among children tested has almost quadrupled over the past 3 decades. The associated morbidities include itch, discomfort, school absence, and reduced quality of life. In adulthood, individuals with Ni-ACD may have severe disabling hand eczema. The increasing rate of Ni-ACD in children has been postulated to result from early and frequent exposure to metals with high amounts of nickel release (eg, as occurs with ear piercing or with products used daily in childhood such as toys, belt buckles, and electronics).

To reduce exposure to metal sources with high nickel release by prolonged and direct contact with human skin, Denmark and the European Union legislated a directive several decades ago with the goal of reducing high nickel release and the incidence of Ni-ACD. Since then, there has been a global reduction in incidence of Ni-ACD in population-based studies of adults and studies of children and young adults being tested for allergic contact dermatitis. These data point to nickel exposure as a trigger for elicitation of Ni-ACD and, further, provide evidence that legislation can have a favorable effect on the economic and medical health of a population.

This policy statement reviews the epidemiology, history, and appearances of Ni-ACD. Examples of sources of high nickel release are discussed to highlight how difficult it is to avoid this metal in modern daily lives. Treatments are outlined, and avoidance strategies are presented. Long-term epidemiological interventions are addressed. Advocacy for smarter nickel use is reviewed. The American Academy of Pediatrics supports US legislation that advances safety standards (as modeled by the European Union) that protect children from early and prolonged skin exposure to high–nickel-releasing items. Our final aim for this article is to aid the pediatric community in developing nickel-avoidance strategies on both individual and global levels.

G-quadruplex, assembled from a square array of guanine (G) molecules, is an important structure with crucial biological roles in vivo but also a versatile template for ordered functional materials. Although the understanding of G-quadruplex structures is the focus of numerous studies, little is known regarding the control of G-quartet stacking...

Toward the goal of increasing the throughput of high-resolution mass characterization of intact antibodies, we developed a RapidFire–mass spectrometry (MS) assay using electrospray ionization. We achieved unprecedented screening throughput as fast as 15 s/sample, which is an order of magnitude improvement over conventional liquid chromatography (LC)-MS approaches. The screening enabled...

Functioning cells depend on the outward-facing plasma membrane (PM) effectively contacting the endoplasmic reticulum (ER), which serves as a central hub for contacts with mitochondria and other intracellular organelles. The contact sites are critical to intracellular communication because they mediate intermembrane exchange of lipids, ions, and other small molecules that...

Many noncoding RNAs are known to play a role in the cell directly linked to their structure. Structure prediction based on the sole sequence is, however, a challenging task. On the other hand, thanks to the low cost of sequencing technologies, a very large number of homologous sequences are becoming available for many RNA families. In the protein community, the idea of exploiting the covariance of mutations within a family to predict the protein structure using the direct-coupling-analysis (DCA) method has emerged in the last decade. The application of DCA to RNA systems has been limited so far. We here perform an assessment of the DCA method on 17 riboswitch families, comparing it with the commonly used mutual information analysis and with state-of-the-art R-scape covariance method. We also compare different flavors of DCA, including mean-field, pseudolikelihood, and a proposed stochastic procedure (Boltzmann learning) for solving exactly the DCA inverse problem. Boltzmann learning outperforms the other methods in predicting contacts observed in high-resolution crystal structures.

ABSTRACT

Members of family Coronaviridae cause a variety of diseases in birds and mammals. Porcine hemagglutinating encephalomyelitis virus (PHEV), a lesser-researched coronavirus, can infect naive pigs of any age, but clinical disease is observed in pigs ≤4 weeks of age. No commercial PHEV vaccines are available, and neonatal protection from PHEV-associated disease is presumably dependent on lactogenic immunity. Although subclinical PHEV infections are thought to be common, PHEV ecology in commercial swine herds is unknown. To begin to address this gap in knowledge, a serum IgG antibody enzyme-linked immunosorbent assay (ELISA) based on the S1 protein was developed and evaluated on known-status samples and then used to estimate PHEV seroprevalence in U.S. sow herds. Assessment of the diagnostic performance of the PHEV S1 ELISA using serum samples (n = 924) collected from 7-week-old pigs (n = 84; 12 pigs per group) inoculated with PHEV, porcine epidemic diarrhea virus, transmissible gastroenteritis virus, porcine respiratory coronavirus, or porcine deltacoronavirus showed that a sample-to-positive cutoff value of ≥0.6 was both sensitive and specific, i.e., all PHEV-inoculated pigs were seropositive from days postinoculation 10 to 42, and no cross-reactivity was observed in samples from other groups. The PHEV S1 ELISA was then used to estimate PHEV seroprevalence in U.S. sow herds (19 states) using 2,756 serum samples from breeding females (>28 weeks old) on commercial farms (n = 104) with no history of PHEV-associated disease. The overall seroprevalence was 53.35% (confidence interval [CI], ±1.86%) and herd seroprevalence was 96.15% (CI, ±3.70%).

IMPORTANCE There is a paucity of information concerning the ecology of porcine hemagglutinating encephalomyelitis virus (PHEV) in commercial swine herds. This study provided evidence that PHEV infection is endemic and highly prevalent in U.S. swine herds. These results raised questions for future studies regarding the impact of endemic PHEV on swine health and the mechanisms by which this virus circulates in endemically infected populations. Regardless, the availability of the validated PHEV S1 enzyme-linked immunosorbent assay (ELISA) provides the means for swine producers to detect and monitor PHEV infections, confirm prior exposure to the virus, and to evaluate the immune status of breeding herds.

New scanning electron microscope observations of unadulterated calcareous nannofossil assemblages on lamina surfaces of Cretaceous Tanzania Drilling Project sediments reveal high diversity in the <3 µm size-range and high abundances of small and frangible morphologies. These assemblages prompt comparison to modern assemblages, which show similar high diversity and abundance of very small and fragile taxa, although these assemblages are generally not preserved in the fossil record due to taphonomic filtering. Not only are there broad similarities between the general composition of modern assemblages and those of the Tanzanian lagerstätte, but also our discovery of several new Cretaceous taxa provides evidence for greatly extended fossil lineages of extant orders, with implications for both deep-time biodiversity divergence and survival through the end-Cretaceous mass extinction. Our findings include: new species that are the first-recorded Mesozoic representatives of the extant Syracosphaeraceae and Papposphaeraceae; potentially previously unrecorded diversity in the Mesozoic Calciosoleniaceae, another extant order, represented by extant species that have been described already; and new species and unusually high abundances of the Mesozoic Stephanolithiaceae. We also highlight the extended range of an incertae sedis Cenozoic genus, Ellipsolithus, into at least the Turonian.

Here, we describe seven new miniscule to very small Cretaceous species: Syracosphaera antiqua, S. repagula, Pocillithus macleodii, P. crucifer, Stradnerlithus wendleri, S.? haynesiae and Tortolithus foramen.

Sepsis causes an activation of the human contact system, an inflammatory response mechanism against foreign surfaces, proteins and pathogens. The serine proteases of the contact system, factor XII and plasma kallikrein, are decreased in plasma of septic patients, which was previously associated with an unfavorable outcome. However, the precise mechanisms and roles of contact system factors in bacterial sepsis are poorly understood. We, therefore, studied the physiological relevance of factor XII and plasma kallikrein in a mouse model of experimental sepsis. We show that decreased plasma kallikrein concentration in septic mice is a result of reduced mRNA expression plasma prekallikrein gene, indicating that plasma kallikrein belong to negative acute phase proteins. Investigations regarding the pathophysiological function of contact system proteases during sepsis revealed different roles for factor XII and plasma kallikrein. In vitro, factor XII decelerated bacteria induced fibrinolysis, whereas plasma kallikrein supported it. Remarkably, depletion of plasma kallikrein (but not factor XII) by treatment with antisense-oligonucleotides, dampens bacterial dissemination and growth in multiple organs in the mouse sepsis model. These findings identify plasma kallikrein as a novel host pathogenicity factor in Streptococcus pyogenes sepsis.

Nắm rõ và tuân theo những nguyên tắc thiết kế nội thất dưới đây sẽ giúp bạn tránh được những sai lầm không đáng có trong quá trình lập kế hoạch và triển khai dự án thiết kế nội thất.

Infographic dưới đây giới thiệu một số nguyên tắc cơ bản trong thiết kế nhà bếp hiện đại, góp phần mang tới sự tiện nghi và cảm giác thoải mái cho người nội trợ.

Chủ nhân căn hộ nhỏ vốn là vũ công ballet chuyên nghiệp. Đặc thù công việc buộc anh thường xuyên phải luyện tập tại nhà trong một không gian trống tương đối rộng. Điều này đã truyền cảm hứng cho đội ngũ thiết kế nảy ra nhiều giải pháp độc đáo và vô cùng thú vị.

Đầu năm mới, việc bố trí không gian làm việc của văn phòng sao cho hợp phong thủy có ý nghĩa rất lớn để doanh nghiệp làm ăn thuận lợi, suôn sẻ trong cả năm. Dưới đây là những nguyên tắc cơ bản khi sắp xếp văn phòng làm việc.

Công việc sẽ luôn "thuận buồm xuôi gió", có nhiều cơ hội thăng tiến nếu bạn áp dụng một số quy tắc về phong thủy văn phòng dưới đây.

Cũng như không gian nhà ở, văn phòng làm việc cần có những quy chuẩn nhất định về phong thủy để đem lại sự thoải mái cho người sử dụng, từ đó nâng cao năng suất và hiệu quả công việc.

Nội quy đăng tin? Quy tắc phê duyệt bài? Những lỗi cần tránh khi đăng bài?

Trong phong thủy nhà ở, phong thủy cầu thang giữ vai trò rất quan trọng, vì cầu thang là nơi dẫn khí và tiếp khí cho các khu chức năng ở tầng trên. Để cầu thang phát huy tốt chức năng này, gia chủ cần lưu ý 5 nguyên tắc về phong thủy như sau:

Thế hệ trẻ độ tuổi 8X, 9X ngày càng có nhiều người đầu tư vào bất động sản, có nhà riêng, căn hộ. Nhu cầu về không gian sống của họ khá linh hoạt và sáng tạo, nhưng họ cũng muốn thể hiện cá tính riêng và chú ý phong thủy.

Rõ ràng, việc đi dây điện hay bố trí công tắc, ổ cắm điện trong nhà thường do những người có chuyên môn đảm nhiệm. Tuy nhiên, ở vị thế chủ nhà và cũng là người sử dụng, bạn nên nắm rõ một vài nguyên tắc cơ bản để có thể giám sát quá trình thực hiện nhằm đảm bảo an toàn, thẩm mỹ và tiện dụng trong quá trình sinh hoạt gia đình.