Технолгия очистки отходящих газов при производстве ферросплавов

В статье рассматривается проблема выбросов в атмосферу загрязненных отходящих газов в процессе выплавки ферросплавов. Предложена технологическая схема для очистки газов в ферросплавном производстве.The article considers the problem of emissions of polluted waste gases into the atmosphere during the smelting of ferroalloys. A technological scheme for purification of gases in ferroalloy production is proposed

Correlation effects and orbital magnetism of Co clusters

Recent experiments on isolated Co clusters have shown huge orbital magnetic moments in comparison with their bulk and surface counterparts. These clusters hence provide the unique possibility to study the evolution of the orbital magnetic moment with respect to the cluster size and how competing interactions contribute to the quenching of orbital magnetism. We investigate here different theoretical methods to calculate the spin and orbital moments of Co clusters, and assess the performances of the methods in comparison with experiments. It is shown that density functional theory in conventional local density or generalized gradient approximations, or even with a hybrid functional, severely underestimates the orbital moment. As natural extensions/corrections we considered the orbital polarization correction, the LDA+U approximation as well as the LDA+DMFT method. Our theory shows that of the considered methods, only the LDA+DMFT method provides orbital moments in agreement with experiment, thus emphasizing the importance of dynamic correlations effects for determining fundamental magnetic properties of magnets in the nano-size regime

A compact and robust diode laser system for atom interferometry on a sounding rocket

We present a diode laser system optimized for laser cooling and atom interferometry with ultra-cold rubidium atoms aboard sounding rockets as an important milestone towards space-borne quantum sensors. Design, assembly and qualification of the system, combing micro-integrated distributed feedback (DFB) diode laser modules and free space optical bench technology is presented in the context of the MAIUS (Matter-wave Interferometry in Microgravity) mission. This laser system, with a volume of 21 liters and total mass of 27 kg, passed all qualification tests for operation on sounding rockets and is currently used in the integrated MAIUS flight system producing Bose-Einstein condensates and performing atom interferometry based on Bragg diffraction. The MAIUS payload is being prepared for launch in fall 2016. We further report on a reference laser system, comprising a rubidium stabilized DFB laser, which was operated successfully on the TEXUS 51 mission in April 2015. The system demonstrated a high level of technological maturity by remaining frequency stabilized throughout the mission including the rocket's boost phase

INFLUENCE OF pH, SOME CHLORIDE AND PHOSPHATES ON EMULSIFYING AND SOLUBILITY PROPERTIES OF CASHEW KERNEL (Anacardium occidentale) PROTEIN ISOLATE

Effect   of   pH,   NaCl,   KCI,   KH PO or   NaH PO on   solubility   and   emulsifying   properties   of   cashew                                      2   4         2   4         (Anacardium occidentale L.) protein isolate (CPI) were determined. The emulsifying properties of CPI        were assessed turbidimetrically. Maximum soluble protein observed at pH 2 and pH 12 media were 62         and 95%, respectively. CPI solubility in NaCl, KCI, KH PO  or NaH PO    solutions were better than in                                                               2   4       2   4         H O. This solubility is salt concentration dependent. pH 5 gave a better emulsion activity {EA} than          2         other pH values. Its emulsion appeared stable at pH 2, 11 or 12. CPI stabilized oil-in-water emulsion                                                                                         3         has longer shelf life at low chloride and phosphate concentrations (0.1 - 0.4mol/dm  ). EA of CPI in NaCl,         KCl, NaH PO   or KH PO   showed positive correlation with solubility.                  2   4      2   4&nbsp

Ultrafast Molecular Imaging by Laser Induced Electron Diffraction

We address the feasibility of imaging geometric and orbital structure of a polyatomic molecule on an attosecond time-scale using the laser induced electron diffraction (LIED) technique. We present numerical results for the highest molecular orbitals of the CO2 molecule excited by a near infrared few-cycle laser pulse. The molecular geometry (bond-lengths) is determined within 3% of accuracy from a diffraction pattern which also reflects the nodal properties of the initial molecular orbital. Robustness of the structure determination is discussed with respect to vibrational and rotational motions with a complete interpretation of the laser-induced mechanisms

PHYLOGENETICS OF ELONGATION FACTOR-G MITOCHONDRIAL PROTEIN GENE (GFM1) IN TEN SELECTED SPECIES

The second stage of protein synthesis is elongation. One of the elongation factors in the elongation cycle of protein synthesis is the elongation factor-G (GFM1). GFM1 is an ancient translational GTPase (trGTPase); the bacterial homolog of eukaryotic eEF2 and archaeal aEF2, respectively. It may interact with the transcriptional apparatus as a positive regulator of RNA synthesis in various species. Genetic variations in GFM1 gene of ten species including cattle, human, chicken, mouse, rat, horse, zebra fish, honeybee, pig and rabbit based on availability were investigated using bioinformatic approach. Using a comparative genomic approach, 4,442 base pairs (bp) of the GFM1 sequences were obtained. Alignment of the sequences within the region of 3,626 bp and containing 816 gaps was carried out using Clustal W software. A very close relationship between rabbit and pig was observed in the phylogenetic tree of GFM1 gene which showed that the comparability of GFM1 gene sequence was highest between the two species and they evolved from a most recent common ancestor with respect to GFM1 gene. Cattle, human, rat and zebra fish were closest by their genetic distances to the ancestor, while mouse, horse, chicken, rabbit and honeybee were distant from the common ancestor. However, close phylogenetic relationship among species might be as a result of conservation of the sequence in the various species.Â

Diagnosis of glaucoma by indirect classifiers

Objectives: Demonstration of the applicability of a framework called indirect classification to the example of glaucoma classification. Indirect classification combines medical a priori knowledge and statistical classification methods. The method is compared to direct classification approaches with respect to the estimated misclassification error. Methods: Indirect classification is applied using classification trees and the diagnosis of glaucoma. Misclassification errors are reduced by bootstrap aggregation. As direct classification methods linear discriminant analysis, classification trees and bootstrap aggregated classification trees are utilized in the problem of glaucoma diagnosis. Misclassification rates are estimated via 10-fold cross-validation. Results: Indirect classification techniques reduce the misclassification error in the context of glaucoma classification compared to direct classification methods. Conclusions: Embedding a priori knowledge into statistical classification techniques can improve misclassification results. Indirect classification offers a framework to realize this combination

The calibration of photographic and spectroscopic films: Reciprocity failure and thermal responses of IIaO film at liquid nitrogen temperatures

Reciprocity failure was examined for IIaO spectroscopic film. The results indicate reciprocity failure occurs at three distinct minimum points in time; 15 min, 30 min and 90 min. The results are unique because theory suggests only one minimum reciprocity failure point should occur. When incubating 70mm IIaO film for 15 and 30 min at temperatures of 30, 40, 50, and 60 C and then placing in a liquid nitrogen bath at a temperature of -190 C the film demonstrated an increase of the optical density when developed at a warm-up time of 30 min. Longer warm-up periods of 1, 2 and 3 hrs yield a decrease in optical density of the darker wedge patterns; whereas, shorter warm-up times yield an overall increase in the optical densities

Effects of light colour and oscillator frequency on earthworm bioactivity

An experiment was conducted at the Zoology Laboratory of the Olabisi Onabanjo University, Nigeria to evaluate the suitability of different light colours. Being generated from 15-watt, low-heat, or frequencygenerated flourescent tubes as stimulants to enhance, major cast productivity of the earthworm species Hyperiodrilus africanus. The aim was to determine if exposure to the different light colours would improve the cast productivity of the worms and show whether H. africanus would show preference for any particular light colour, in terms of mass of cast produced and rates of emigration. The earthworms were kept in cylindrical plastic containers and put in different cubicles on a wooden shelf, where they are subjected to different light colours that is, white, dark (control), green, blue, and red. Results indicated that the red light colour was the most suitable in terms of cast productivity, as casting was highest (11.96 g/worm), followed by blue (10.66 g/worm), green (9.49 g/worm), dark (7.2 g/worm) and white (4.86 g/worm), respectively. Least emigration was recorded under the control (dark) , followed by red, white, blue and green respectively, which indicated that the worms were probably more ‘comfortable’ in the dark and the red light than the other light colours tested. Results suggest that if red light is introduced to a farm, casting activities can be increased and therefore, soil fertility can be improved