The first Triassic beaded lacewing (Neuroptera: Berothidae) from Central Asia, with redescription of Mesoberotha superb (Riek, 1955).

Ferganoberotha minutissima gen. et sp. nov.

A forerunner of Darwin in the service of nihilists: the translation and reception of in Russia.

by Robert Chambers, a Scottish publisher and popular writer, was one of the most influential evolutionary works in the pre-Darwinian age. This article examines the circumstances in which this treatise was published in Russia in 1863 and went through a second printing in 1868. was translated into Russian by Alexander Palkhovsky (1831-1907), a former medical student, ideologically close to the nihilist movement, and was initially printed by the radical publisher Anatoly Cherenin, later prosecuted for his ties with revolutionary circles.

Observation of the effect of gravity on the motion of antimatter.

Einstein's general theory of relativity from 1915 remains the most successful description of gravitation. From the 1919 solar eclipse to the observation of gravitational waves, the theory has passed many crucial experimental tests. However, the evolving concepts of dark matter and dark energy illustrate that there is much to be learned about the gravitating content of the universe.

The earliest pollen-loaded insects from the Lower Permian of Russia.

Recent fossil discoveries suggest that the coevolution of insect pollinators and gymnosperms started long before the appearance of flowering plants. One of the keys to understanding the origins of pollination relationships is fossil insects with gymnosperm pollen attached to the body surface. Such fossils are exceedingly rare to find, especially from the Palaeozoic, a time when ambers with insect inclusions were absent.

Possible long-proboscid insect pollinators from the Early Permian of Russia.

Insect pollination is one of the hallmarks of flowering plants. Bees, moths, flies, and some other pollinators evolved elongate siphonate mouthparts for sucking concealed nectar and occasionally other liquids. However, it is clear from the fossil record that insects with similar adaptations appeared long before the mid-Cretaceous radiation of angiosperms.

Osmyloberotha, an unusual new genus of beaded lacewings (Neuroptera: Berothidae) from Burmese amber.

A new beaded lacewing, Osmyloberotha simpla gen. et sp. nov.

Relationship of Nutritional Status and Spirometric Parameters in Children with Bronchial Asthma.

Unlabelled: The potential mechanisms of bronchial asthma (BA) negative modification under the influence of obesity are currently being actively studied. However, at present, the effect of nutritional status on bronchial obstruction in children with BA cannot be considered established. In this regard, the was to study the relationship of spirometric parameters reflecting bronchial patency with nutritional status in children with asthma.

Laser cooling of antihydrogen atoms.

The photon-the quantum excitation of the electromagnetic field-is massless but carries momentum. A photon can therefore exert a force on an object upon collision. Slowing the translational motion of atoms and ions by application of such a force, known as laser cooling, was first demonstrated 40 years ago.

The Relationship Between Indicators of Nasal Respiratory Function and Spirometric Parameters in Children With Bronchial Asthma.

The relationship between objective indicators of nasal obstruction and airflow limitation in children with bronchial asthma (BA) and allergic rhinitis (AR) has not yet been studied. To study the relationship between objective parameters of nasal obstruction and airflow limitation, determined using the methods of anterior active rhinomanometry (AARM) and spirometry in children with BA and AR. Eighty eight children and adolescents with BA and AR, boys-65.

A substitute name for a genus of fossil mantispid (Insecta: Neuroptera: Mesomantispinae) from the Jurassic of Kazakhstan.

In a recent paper (Jepson et al., 2018) a new genus of Mesomantispinae from Karatau, Kazakhstan was described. The name given to the genus, Longicollum, is unavailable, because it is preoccupied by a senior homonym, Longicollum Yamaguti, 1935 (Acanthocephala: Pomphorhynchidae).

Observation of the 1S-2P Lyman-α transition in antihydrogen.

In 1906, Theodore Lyman discovered his eponymous series of transitions in the extreme-ultraviolet region of the atomic hydrogen spectrum. The patterns in the hydrogen spectrum helped to establish the emerging theory of quantum mechanics, which we now know governs the world at the atomic scale. Since then, studies involving the Lyman-α line-the 1S-2P transition at a wavelength of 121.

New Mesomantispinae (Insecta: Neuroptera: Mantispidae) from the Jurassic of Karatau, Kazakhstan.

Two new genera and species, and one indeterminate genera and species of fossil Mantispidae, Mesomantispinae are described from the Upper Jurassic of Karatau, Kazakhstan: Longicollum benmaddoxi gen. et sp. nov.

Characterization of the 1S-2S transition in antihydrogen.

In 1928, Dirac published an equation that combined quantum mechanics and special relativity. Negative-energy solutions to this equation, rather than being unphysical as initially thought, represented a class of hitherto unobserved and unimagined particles-antimatter. The existence of particles of antimatter was confirmed with the discovery of the positron (or anti-electron) by Anderson in 1932, but it is still unknown why matter, rather than antimatter, survived after the Big Bang.

Molecular Structure and Conformational Analysis of 1-Phenyl-1-X-1-Silacyclohexanes (X = F, Cl) by Electron Diffraction, Low-Temperature NMR, and Quantum Chemical Calculations.

The molecular structure and conformational preferences of 1-phenyl-1-X-1-silacyclohexanes CHSi(Ph,X) (X = F (3), Cl (4)) were studied by gas-phase electron diffraction, low-temperature NMR spectroscopy, and high-level quantum chemical calculations. In the gas phase only three (3) and two (4) stable conformers differing in the axial or equatorial location of the phenyl group and the angle of rotation about the Si-C bond (axi and axo denote the Ph group lying in or out of the X-Si-C plane) contribute to the equilibrium. In 3 the ratio Ph:Ph:Ph is 40(12):55(24):5 and 64:20:16 by experiment and theory, respectively.

New fossil Osmylopsychopidae (Neuroptera) from the Early/Middle Jurassic of Kyrgyzstan, Central Asia.

Four genera and four species of Osmylopsychopidae are described from the Jurassic of Kyrgyzstan, Central Asia: Oligophlebiopsis biramosa gen. et sp. nov.

[EEG in altricial pied flycatcher nestlings during the functional sates related with natural behavior cycle].

Electrical brain activity accompanying various forms of behavior was studied in 11-day-old pied flycatcher nestlings. Wavelet analysis of EEG, recorded from symmetrical areas of caudomedial nidopallium (higher avian auditory center) during rest, passive and active wakefulness and movements showed that the major rhythmical EEG component was confined to low-frequency range in all four states. The significant difference from other states was observed only during movements: spectral power in the range of 1-3 Hz decreased while that in the range of 5-20 Hz--increased.

Ultracold heteronuclear mixture of ground and excited state atoms.

We report on the realization of an ultracold mixture of lithium atoms in the ground state and ytterbium atoms in an excited metastable (3P2) state. Such a mixture can support broad magnetic Feshbach resonances which may be utilized for the production of ultracold molecules with an electronic spin degree of freedom, as well as novel Efimov trimers. We investigate the interaction properties of the mixture in the presence of an external magnetic field and find an upper limit for the background interspecies two-body inelastic decay coefficient of K2'<3×10(-12)  cm3/s for the 3P2 mJ=-1 substate.

[Age-related changes in time-frequency structure of sleep spindles in EEG in rats with genetic predisposition to absence epilepsy (Wag/Rij)].

It is known that sleep spindles are produced by thalamo-cortical system spontaneously during the slow-wave sleep; pathological processes in thalamo-cortical network might cause absence epilepsy. The aim of this study was to examine age-dependent changes in time-frequency structure of sleep spindles in parallel to a progressive increase in amount of absence seizures in WAG/Rij rat model. EEG was consistently recorded at the age of 5, 7 and 9 months by means of epidural electrodes implanted in the frontal cortex.

A remarkable new family of Jurassic insects (Neuroptera) with primitive wing venation and its phylogenetic position in Neuropterida.

Background: Lacewings (insect order Neuroptera), known in the fossil record since the Early Permian, were most diverse in the Mesozoic. A dramatic variety of forms ranged in that time from large butterfly-like Kalligrammatidae to minute two-winged Dipteromantispidae.

Principal Findings: We describe the intriguing new neuropteran family Parakseneuridae fam.

Sympathetic cooling in an optically trapped mixture of alkali and spin-singlet atoms.

We report on the realization of a stable mixture of ultracold lithium and ytterbium atoms confined in a far-off-resonance optical dipole trap. We observe sympathetic cooling of 6Li by 174Yb and extract the s-wave scattering length magnitude |a(6Li-174Yb)|=(13±3)a0 from the rate of interspecies thermalization. Using forced evaporative cooling of 174Yb, we achieve reduction of the 6Li temperature to below the Fermi temperature, purely through interspecies sympathetic cooling.

High-resolution 2 + 1 REMPI study of the a''1Sigma(g)+ state in N2.

We reinvestigated the 2 + 1 REMPI Q-branch spectrum of the a''1Sigma(g)+-X1Sigma(g)+ system of N2 at around 202 nm in a Doppler-free configuration with counterpropagating laser beams. Highly accurate absolute calibrations were performed using either an I2 reference standard or a frequency comb reference laser. The observed rotational series shows a clear effect of a perturbation in terms of an anticrossing located at J = 26.

Improved laboratory values of the H2 Lyman and Werner lines for constraining time variation of the proton-to-electron mass ratio.

Two distinct high-accuracy laboratory spectroscopic investigations of the H2 molecule are reported. Anchor lines in the EF1Sigmag+-X1Sigmag+ system are calibrated by two-photon deep-UV Doppler-free spectroscopy, while independent Fourier-transform spectroscopic measurements are performed that yield accurate spacings in the B1Sigmau+-EF1Sigmag+ and I1Pig-C1Piu systems. From combination differences accurate transition wavelengths for the B-X Lyman and the C-X Werner lines can be determined with accuracies better than approximately 5 x 10(-9), representing a major improvement over existing values.

Laser induced fluorescence of Mg-phthalocyanine in He droplets: evidence for fluxionality of large H2 clusters at 0.38 K.

The formation of Ar and H2 clusters, having up to 900 particles in helium droplets, has been studied via laser induced fluorescence of attached Mg-phthalocyanine (Mg-Pc) molecules. In the experiments, one Mg-Pc molecule in average was added to each He droplet either before or after the cluster species, and the shift of the spectrum of the Mg-Pc molecules was studied as a function of the cluster size. For Ar clusters, about a factor of 2 smaller matrix shift was observed for the late pickup of the Mg-Pc molecules as compared with the prior pickup, indicating that in the former case, the Mg-Pc molecules reside on the surface of the preformed Ar clusters.

[A system of digital analysis for the diagnosis of vascular pathologies of the fundus oculi].

A diagnostic tools' set was worked out for the digital analysis of eye-fundus images; it comprises a retinophot and a digital camera adapted to it as well as a computer system and a special soft. A new mathematical model of a fragment of the ocular main microcirculation vessel and the below related global diagnostic parameters of the vascular system were elaborated: mean diameter, deviation from linearity, image acutance, fluctuations' amplitude for thickness and route, and sinuosity of thickness and route. The system of eye-fundus image processing provides for precising a nature of changes in vascular thickness along the route and for assessing the local diameter by using the vascular profile; it can also be used for determining the angle of vessels' branching.

[The study of effects of geomagnetic disturbances at high latitudes on the intrauterine condition of fetus by cardiotocography].

The effect of geomagnetic disturbances on the intrauterine condition of the fetus in high latitudes was studied by comparing the index of fetus condition (IFC) with the heliogeophysical indices (planetary Kp index and Dst variation index). The functional state of fetus at late terms of pregnancy was assessed by the method of cardiomonitoring. The data of fetal cardiomonitoring were processed by the method of Prof.