Jessica Mauboy is separated from her mother Therese while the Northern Territory keeps its borders closed due to the coronavirus pandemic. 

Nicole Kidman has revealed how the coronavirus pandemic is affecting her family. 

At least two people have died in separate avalanches in northern Italy on the first weekend Italians have been allowed to venture far afield after a two-month coronavirus lockdown. The Trento Alpine Rescue service said the body of one man was found late Saturday on the Folgaria plateau after an avalanche separated him from his dog. The pet was found unharmed. At the ski resort of Cortina, the body of a skier was found after a separate avalanche. His brother was rescued, the ANSA news agency said. Italian authorities closed ski lifts early on in Italy's lockdown and they remain closed, but skiers can still venture out on ungroomed, unmarked terrain.

An innovative project in Andhra Pradesh and Karnataka is helping sex workers empower themselves, by training them as paralegal volunteers. A confident community is fighting exploitation, standing up and being counted, reports Ramesh Menon.

In India, other states look at Kerala's record of firsts with envy. Dr Amartya Sen, the Nobel laureate, has hailed it as a model. But Kerala, caught in a web of paradoxes, is not what it seems, writes Ramesh Menon.

Nandita Das's Firaaq is like a celluloid anthology that will carve a niche in the minds of the audience for capturing moving images of the personal anger and anguish at the Gujarat catastrophe, writes Shoma Chatterji.

The police here aiming to spread the message to not venture out of home unnecessarily during relaxation in the curfew, started the ‘Stay Home’ campaign through paragliding. The town residents were pleasantly surprised on Saturday to a see a paraglider making rounds of the city from the sky with a banner 'Stay Home - Barnala Police'.

At least two people have died in separate avalanches in northern Italy on the first weekend Italians have been allowed to venture far afield after a two-month coronavirus lockdown.

Archives, Room Use Only - TK5261.F78 1854

Archives, Room Use Only - TK455.J43 1915

Archives, Room Use Only - UG582.H4 F56 1888

Archives, Room Use Only - TK5269.M67 1869b

Archives, Room Use Only - TK5261.M58 1899

Archives, Room Use Only - PN6161.P55 1876

Archives, Room Use Only - TK9946.H68 1914

Archives, Room Use Only - TK5742.H37 1918

Archives, Room Use Only - TK5295.W47 1875

Archives, Room Use Only - TK455.L443 1904

Archives, Room Use Only - TK5741.T74 1902

Archives, Room Use Only - TK5445.T37 1889

Archives, Room Use Only - HE8094.G74 1886

Archives, Room Use Only - TK5262.R46 1924

Archives, Room Use Only - QC611.H46 1831

Archives, Room Use Only - TK5742.S63 1917

Archives, Room Use Only - TK5261.B87 1875

Archives, Room Use Only - UG605.F8 F7313 1917

Archives, Room Use Only - TK5264.M36 1894

Archives, Room Use Only - TK5295.W48 1929

Archives, Room Use Only - UG582.H4 G78 1920z

Archives, Room Use Only - R857.E49 I58 1886

Even as a large number of cases are being reported from para-military forces in other states, Bihar is yet to record any Covid-19 case among the personnel posted in the state.

The Trento Alpine Rescue service said the body of one man was found late Saturday on the Folgaria plateau after an avalanche separated him from his dog.

Baloda Bazaar-Bhatapara district has come up with a great idea to contribute in the fight against the coronavirus pandemic. The amount of financial penalties recovered from the lockdown violators will be used for procuring safety kits for the doctors and health workers.

Compact X-ray sources based on inverse Compton scattering provide brilliant and partially coherent X-rays in a laboratory environment. The cross section for inverse Compton scattering is very small, requiring high-power laser systems as well as small laser and electron beam sizes at the interaction point to generate sufficient flux. Therefore, these systems are very sensitive to distortions which change the overlap between the two beams. In order to monitor X-ray source position, size and flux in parallel to experiments, the beam-position monitor proposed here comprises a small knife edge whose image is acquired with an X-ray camera specifically designed to intercept only a very small fraction of the X-ray beam. Based on the source position drift recorded with the monitor, a closed-loop feedback stabilizes the X-ray source position by adjusting the laser beam trajectory. A decrease of long-term source position drifts by more than one order of magnitude is demonstrated with this device. Consequently, such a closed-loop feedback system which enables stabilization of source position drifts and flux of inverse Compton sources in parallel to experiments has a significant impact on the performance of these sources.

With the introduction of the multi-bend achromats in the new fourth-generation storage rings the emittance has decreased by an order of magnitude resulting in increased brightness. However, the higher brightness comes with smaller beam sizes and narrower radiation cones. As a consequence, the requirements on mechanical stability regarding the beamline components increases. Here an innovative five-axis parallel kinematic mirror unit for use with soft X-ray beamlines using off-axis grazing-incidence optics is presented. Using simulations and measurements from the HIPPIE beamline at the MAX IV Laboratory it is shown that it has no Eigen frequencies below 90 Hz. Its positioning accuracy is better than 25 nm linearly and 17–35 µrad angularly depending on the mirror chamber dimensions.

A simple two-spindle based lathe system for the preparation of cylindrical samples intended for X-ray tomography is presented. The setup can operate at room temperature as well as under cryogenic conditions, allowing the preparation of samples down to 20 and 50 µm in diameter, respectively, within minutes. Case studies are presented involving the preparation of a brittle biomineral brachiopod shell and cryogenically fixed soft brain tissue, and their examination by means of ptychographic X-ray computed tomography reveals the preparation method to be mainly free from causing artefacts. Since this lathe system easily yields near-cylindrical samples ideal for tomography, a usage for a wide variety of otherwise challenging specimens is anticipated, in addition to potential use as a time- and cost-saving tool prior to focused ion-beam milling. Fast sample preparation becomes especially important in relation to shorter measurement times expected in next-generation synchrotron sources.

The high temporal resolution in data acquisition, possible in the quick-scanning EXAFS (QEXAFS) mode of operation, provides new challenges in efficient data processing methods. Here a new approach is developed that combines an easy to use interactive graphical interface with highly optimized and fully parallelized Python-based routines for extracting, normalizing and interpolating oversampled time-resolved XAS spectra from a raw binary stream of data acquired during operando QEXAFS studies. The programs developed are freely available via a Github repository.

A novel sample cell with control of temperature and relative humidity permitted collection of data of excellent quality, enabling unrestrained refinement of all atomic parameters. One of the K atoms in the structure is disordered; very strong anisotropy in three of the four water O atoms indicates partial static disorder, which does not involve the bonded H atoms.

Highly Brønsted-acidic boron trifluoride monohydrate, a widely used `super acid-catalyst', is a colourless fuming liquid that releases BF3 at room temperature. Com­pared to the liquid com­ponents, i.e. boron trifluoride monohydrate and 1,4-dioxane, their 1:1 adduct, BF3H2O·C4H8O2, is a solid with pronounced thermal stability (m.p. 401–403 K). The crystal structure of the long-time-stable easy-to-handle and weighable com­pound is reported along with new preparative aspects and the results of 1H, 11B, 13C and 19F spectroscopic investigations, particularly documenting its high Brønsted acidity in aceto­nitrile solution. The remarkable stability of solid BF3H2O·C4H8O2 is attributed to the chain structure established by O—H⋯O hydrogen bonds of exceptional strength {O2⋯H1—O1 [O⋯O = 2.534 (3) Å] and O1—H1⋯O3i [2.539 (3) Å] in the concatenating unit >O2⋯H1—O1—H2⋯O3i<}, taking into account the mol­ecular (non-ionic) character of the structural moieties. Indirectly, this structural feature documents the outstanding acidification of the H2O mol­ecule bound to BF3 and reflects the super acid nature of BF3H2O. In detail, the C22(7) zigzag chain system of hydrogen bonding in the title structure is characterized by the double hydrogen-bond donor and double (κO,κO') hydrogen-bond acceptor functionality of the aqua ligand and dioxane molecule, respectively, the almost equal strength of both hydrogen bonds, the approximatety linear arrangement of the dioxane O atoms and the two neighbouring water O atoms. Furthermore, the approximately planar arrangement of B, F and O atoms in sheets perpendicular to the c axis of the ortho­rhom­bic unit cell is a characteristic structural feature.

Total scattering measurements enable understanding of the structural disorder in crystalline materials by Fourier transformation of the total structure factor, S(Q), where Q is the magnitude of the scattering vector. In this work, the direct calculation of total scattering from a crystalline structural model is proposed. To calculate the total scattering intensity, a suitable Q-broadening function for the diffraction profile is needed because the intensity and the width depend on the optical parameters of the diffraction apparatus, such as the X-ray energy resolution and divergence, and the intrinsic parameters. X-ray total scattering measurements for CeO2 powder were performed at beamline BL04B2 of the SPring-8 synchrotron radiation facility in Japan for comparison with the calculated S(Q) under various optical conditions. The evaluated Q-broadening function was comparable to the full width at half-maximum of the Bragg peaks in the experimental total scattering pattern. The proposed calculation method correctly accounts for parameters with Q dependence such as the atomic form factor and resolution function, enables estimation of the total scattering factor, and facilitates determination of the reduced pair distribution function for both crystalline and amorphous materials.

The fully automatic processing of crystals of macromolecules has presented a unique opportunity to gather information on the samples that is not usually recorded. This has proved invaluable in improving sample-location, characterization and data-collection algorithms. After operating for four years, MASSIF-1 has now processed over 56 000 samples, gathering information at each stage, from the volume of the crystal to the unit-cell dimensions, the space group, the quality of the data collected and the reasoning behind the decisions made in data collection. This provides an unprecedented opportunity to analyse these data together, providing a detailed landscape of macromolecular crystals, intimate details of their contents and, importantly, how the two are related. The data show that mosaic spread is unrelated to the size or shape of crystals and demonstrate experimentally that diffraction intensities scale in proportion to crystal volume and molecular weight. It is also shown that crystal volume scales inversely with molecular weight. The results set the scene for the development of X-ray crystallography in a changing environment for structural biology.

Structural biology generally provides static snapshots of protein conformations that can provide information on the functional mechanisms of biological systems. Time-resolved structural biology provides a means to visualize, at near-atomic resolution, the dynamic conformational changes that macromolecules undergo as they function. X-ray free-electron-laser technology has provided a powerful tool to study enzyme mechanisms at atomic resolution, typically in the femtosecond to picosecond timeframe. Complementary to this, recent advances in the resolution obtainable by electron microscopy and the broad range of samples that can be studied make it ideally suited to time-resolved approaches in the microsecond to millisecond timeframe to study large loop and domain motions in biomolecules. Here we describe a cryo-EM grid preparation device that permits rapid mixing, voltage-assisted spraying and vitrification of samples. It is shown that the device produces grids of sufficient ice quality to enable data collection from single grids that results in a sub-4 Å reconstruction. Rapid mixing can be achieved by blot-and-spray or mix-and-spray approaches with a delay of ∼10 ms, providing greater temporal resolution than previously reported mix-and-spray approaches.