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Gadkari also assured the retailers of looking into their demands of financial aid from the government

Priya Pradeep, a Bengaluru-based freelance business writer, shares the lessons she learnt from her mother.

In transmission X-ray microscopy (TXM) systems, the rotation of a scanned sample might be restricted to a limited angular range to avoid collision with other system parts or high attenuation at certain tilting angles. Image reconstruction from such limited angle data suffers from artifacts because of missing data. In this work, deep learning is applied to limited angle reconstruction in TXMs for the first time. With the challenge to obtain sufficient real data for training, training a deep neural network from synthetic data is investigated. In particular, U-Net, the state-of-the-art neural network in biomedical imaging, is trained from synthetic ellipsoid data and multi-category data to reduce artifacts in filtered back-projection (FBP) reconstruction images. The proposed method is evaluated on synthetic data and real scanned chlorella data in 100° limited angle tomography. For synthetic test data, U-Net significantly reduces the root-mean-square error (RMSE) from 2.55 × 10−3 µm−1 in the FBP reconstruction to 1.21 × 10−3 µm−1 in the U-Net reconstruction and also improves the structural similarity (SSIM) index from 0.625 to 0.920. With penalized weighted least-square denoising of measured projections, the RMSE and SSIM are further improved to 1.16 × 10−3 µm−1 and 0.932, respectively. For real test data, the proposed method remarkably improves the 3D visualization of the subcellular structures in the chlorella cell, which indicates its important value for nanoscale imaging in biology, nanoscience and materials science.

In this article, a method is presented to estimate a new local quality measure for 3D cryoEM maps that adopts the form of a `local resolution' type of information. The algorithm (DeepRes) is based on deep-learning 3D feature detection. DeepRes is fully automatic and parameter-free, and avoids the issues of most current methods, such as their insensitivity to enhancements owing to B-factor sharpening (unless the 3D mask is changed), among others, which is an issue that has been virtually neglected in the cryoEM field until now. In this way, DeepRes can be applied to any map, detecting subtle changes in local quality after applying enhancement processes such as isotropic filters or substantially more complex procedures, such as model-based local sharpening, non-model-based methods or denoising, that may be very difficult to follow using current methods. It performs as a human observer expects. The comparison with traditional local resolution indicators is also addressed.

A detailed study on chiral compound structures found in the Cambridge Structural Database (CSD) is presented. Solvates, salts and co-crystals have intentionally been excluded, in order to focus on the most basic structures of single enantiomers, scalemates and racemates. Similarity between the latter and structures of achiral monomolecular compounds has been established and utilized to arrive at important conclusions about crystallization of chiral compounds. For example, the fundamental phenomenon of conglomerate formation and, in particular, their frequency of occurrence is addressed. In addition, rarely occurring kryptoracemates and scalemic compounds (anomalous racemates) are discussed. Finally, an extended search of enantiomer solid solutions in the CSD is performed to show that there are up to 1800 instances most probably hiding among the deposited crystal structures, while only a couple of dozen have been previously known and studied.

A study on chiral monomolecular compound structures found in the Cambridge Structural Database is presented.

Subjects watched demonstrators for varying amounts of time. When given the pipe, each of the subjects in both groups opened the door on their first attempt using the method they had seen demonstrated.

The post Lemurs exhibit ability for social learning in zoo experiment appeared first on Smithsonian Insider.

The scale of the universe can be difficult to comprehend. Pretend you are going to make a scale model with a basketball representing the Earth […]

The post Can iPads help students learn science? appeared first on Smithsonian Insider.

Well known for its collection of children’s books, the Cooper Hewitt Library holds a rare 19th century illustrated German nursery rhyme children’s book titled Paradiesfibel, written and illustrated […]

The post Learning to sign: Rare book appeared first on Smithsonian Insider.

Single-wavelength X-ray anomalous diffraction (SAD) is a frequently employed technique to solve the phase problem in X-ray crystallography. The precision and accuracy of recovered anomalous differences are crucial for determining the correct phases. Continuous rotation (CR) and inverse-beam geometry (IBG) anomalous data collection methods have been performed on tetragonal lysozyme and monoclinic survivin crystals and analysis carried out of how correlated the pairs of Friedel's reflections are after scaling. A multivariate Bayesian model for estimating anomalous differences was tested, which takes into account the correlation between pairs of intensity observations and incorporates the a priori knowledge about the positivity of intensity. The CR and IBG data collection methods resulted in positive correlation between I(+) and I(−) observations, indicating that the anomalous difference dominates between these observations, rather than different levels of radiation damage. An alternative pairing method based on near simultaneously observed Bijvoet's pairs displayed lower correlation and it was unsuccessful for recovering useful anomalous differences when using the multivariate Bayesian model. In contrast, multivariate Bayesian treatment of Friedel's pairs improved the initial phasing of the two tested crystal systems and the two data collection methods.

The post Learn about the National Zoo’s flamingo flock with keeper Sara Hallager appeared first on Smithsonian Insider.

School's nearly back in session, but the seven young lions at the Smithsonian's National Zoo have been working hard through the summer months!

The post Lion cub summer school: Instead of learning their ABCs, the National Zoo’s lion cubs are learning behaviors that will help animal care staff evaluate their health. appeared first on Smithsonian Insider.

The post Learn about the ash that comes from volcanoes with Dr. Liz Cottrell, a geologist from the National Museum of Natural History appeared first on Smithsonian Insider.

The post Meet Smithsonian archaeologist Stephen Loring and learn how he came work at the Smithsonian’s Arctic Studies Center appeared first on Smithsonian Insider.

The post Conrad Labandiera, Smithsonian palentologist, studies fossils to learn how insects got along before flowering plants arrived appeared first on Smithsonian Insider.

Learn how to use the Smithsonian Wild website to find amazing camera trap photos of mammals from around the world

The post Learn to use the Smithsonian Wild website of amazing animal photos! appeared first on Smithsonian Insider.

Learning from the forest. Setting up a long-term forest research plot in a tropical dry forest in the heart of Panama City. Click here for […]

The post Learning from the forest appeared first on Smithsonian Insider.

How do you train a wild animal to come back to you after you have set it free? If it is a fringe-lipped bat, Trachops […]

The post Rockin’ out: Bats learn to love heavy metal music appeared first on Smithsonian Insider.

Recently a team of scientists working at the Smithsonian’s Tropical Research Institute in Panama, decided to try and learn for the first time just which body parts the gliding ant C. atratus uses to steer as they glide.

The post Gliding ants steer with hind legs as they fly backwards, scientists learn appeared first on Smithsonian Insider.

Many public school students receive little or no exposure to the theory of evolution, the most important concept in understanding biology, says a new guidebook from the National Academy of Sciences (NAS).

American students progress toward proficiency in mathematics requires major changes in instruction, curricula, and assessment in the nations schools, says a new report from the National Research Council of the National Academies.

Each year, tens of millions of Americans, young and old, choose to learn about science in informal ways -- by visiting museums and aquariums, attending after-school programs, pursuing personal hobbies, and watching TV documentaries, for example.

Educational and business leaders want todays students both to master school subjects and to excel in areas such as problem solving, critical thinking, and communication

As researchers’ and teachers’ understanding of how best to learn and teach science evolves and curricula are redesigned, many teachers are left without the experience needed to enhance the science and engineering courses they teach, says a new report from the National Academies of Sciences, Engineering, and Medicine.

Despite their potential, many English learners (ELs) -- who account for more than 9 percent of K-12 enrollment in the U.S. -- lag behind their English-speaking monolingual peers in educational achievement, in part because schools do not provide adequate instruction and social-emotional support to acquire English proficiency or access to academic subjects at the appropriate grade level, says a new report from the National Academies of Sciences, Engineering, and Medicine.

Policymakers, employers, and educational institutions should take steps to strengthen the nation’s skilled technical workforce, says a new report from the National Academies of Sciences, Engineering, and Medicine.

A new report from the National Academies of Sciences, Engineering, and Medicine highlights the dynamic process of learning throughout the life span and identifies frontiers in which more research is needed to pursue an even deeper understanding of human learning.

A shift is needed in how science, technology, engineering, and mathematics (STEM) subjects are taught to students in grades K-12 who are learning English, says a new report from the National Academies of Sciences, Engineering, and Medicine.

Scientific research that involves nonscientists contributing to research processes – also known as ‘citizen science’ – supports participants’ learning, engages the public in science, contributes to community scientific literacy, and can serve as a valuable tool to facilitate larger scale research, says a new report from the National Academies of Sciences, Engineering, and Medicine.

Centering science instruction around investigation and design can improve learning in middle and high schools and help students make sense of phenomena in the world around them.

Between one-third and one-half of U.S. clinicians experience burnout and addressing the epidemic requires systemic changes by health care organizations, educational institutions, and all levels of government, says a new report from the National Academy of Medicine.

A new report from the National Academies of Sciences, Engineering, and Medicine recommends ways to make supply chains -- the systems that provide populations with critical goods and services, such as food and water, gasoline, and pharmaceuticals and medical supplies – more resilient in the face of hurricanes and other disasters, drawing upon lessons learned from the 2017 hurricanes Harvey, Irma, and Maria.

The development of Green Infrastructure (GI) in a UK case study has been researched in a recent study. Some issues caused by an imbalance in stakeholder power and conflicting roles played by major stakeholders were identified with the project. Stakeholder participation is central to the concept of GI and the research reiterates the importance for those implementing GI to ensure that participation is effective and balanced.

Payments for Ecosystem Services (PES) schemes offer direct payments for communities and individuals in exchange for conserving areas of land reserved for conservation for their environmental qualities. The results of an Ecuadorian study highlight key aspects for designing successful PES schemes and demonstrate how investments associated with PES can also benefit poor communities.

Speed control, road traction, wipers when it rains, maintaining safe distances, collision avoidance, and lane change are some of the prominent features.

A pilot cloud-based learning platform that brings together multiple datasets, models and visualisation tools has been developed with the engagement of numerous stakeholders throughout the design process. This tool could lead to informed decisions about flood risk at the local level. These types of tools and frameworks are effective ways of facilitating better decision making.

The report titled "COVID-19: A wake up call for telecom service providers" is based on a survey conducted by QS I Guage, which rates colleges and universities in India with complete operational control held by London-based QS.

DDoS attacks during the first three months of this year have seen a significant spike in attacks on educational websites.

DDoS attacks during the first three months of this year have seen a significant spike in attacks on educational websites.

As many universities are moving quickly to distance learning, it is vital for educators to think carefully about how to adapt their approach to still deliver key learning outcomes for students in an online setting. Today’s guest blogger, Ramnarayan Krishnamurthy, is at the forefront supporting universities as they transition to distance learning. In his role as a Customer Success Engineer, he partners with educators to support them in achieving their goals for teaching and learning.... read more >>

CULPEPER — The Virginia Department of Transportation invites the public to attend one of three upcoming location and design public hearings about a...

CULPEPER — The Virginia Department of Transportation invites the public to attend a citizen information meeting to learn about the upcoming project...

The post Aussie learning platform trains Indonesian miners appeared first on The Lead SA.

Great British Bake Off semi-finalist, Stacey Hart, has taken on a new challenge - creating delicious treats without using refined sugar. Here the baker from Hertfordshire explains what prompted her to make changes and shares her recipes.

CELTIC Manor spa trainer Samantha Boyes has been moving quickly up the ranks in the year she has spent working at the five star resort.

COLONIAL HEIGHTS —The Virginia Department of Transportation (VDOT) will hold a public hearing for a proposed rehabilitation of the Route 46...

Proposed T-shaped intersection at Huguenot Trail, Huguenot Springs Rd. and Woolridge Rd. NORTH CHESTERFIELD —The Virginia Department of...

The Gholson Bridge on Iron Bridge Road (Route 715) runs over the Meherrin River NORTH CHESTERFIELD —The Virginia Department of Transportation...