Baskakova, S. S. Kovalyov, S. I.; Kramarenko, V. A.; Zadorozhnaya, L. A.; Lyasnikova, M. S.; Dymshits, Y. M.; Shishkov, V. A.; Egorov, A. V.; Dolgin, A. M.; Voloshin, A. E.; Kovalchuk, M. V.
A space experiment on the crystallization of lisozyme and glucose isomerase proteins in UK-1 and UK-2 crystallizers on the scientific equipment BELKA on the Bion-M no. 1 spacecraft was performed in April–May 2013. A ground-based experiment was carried out simultaneously at the Institute of Crystallography of the Russian Academy of Sciences (IC RAS). Transparent crystals were obtained in both cases. The lisozyme crystals grown in microgravity are larger than their terrestrial analogs. An optical study of glucose isomerase crystals grown in space has shown that the coalescence of equally oriented crystallites leads to the formation of quasi-single-crystal blocks. An X-ray diffraction experiment on lisozyme crystals has revealed the resolutions for crystals obtained under terrestrial conditions and in space to be 1.74 and 1.58 Å, respectively.
The Palearctic Chaetocnema species are revised. Seven species are described as new: Chaetocnema belka new species; Chaetocnema bergeali new species; Chaetocnema eastafghanica new species; Chaetocnema franzi new species; Chaetocnema igori new species; Chaetocnema lubischevi new species; Chaetocnema t...
el-Ayoty, S A; Abdelhamid, A M
An attempt was made to study the effect of the presence of "El-Nasr" Fertilizer Plant in "Talkha" on the nitrate content of berseem as well as on some blood and milk constituents of buffaloes raised in the surrounding areas of the factory. The studied areas included the northern area (0-2 km from the factory), the south eastern area (1.5-3 km from the factory) and the control area (not nearer than 5 km from the factory). The study showed that the nitrate content in berseem grown near the factory had higher NO3 values exceeding 2% NO3 in DM in some cases. Berseem from the areas far from the factory had lower NO3 levels (about 50-200 ppm NO3 in DM). Samples from "El-Mansoura" and "El-Manzala" contained higher NO3 levels than the samples from "El-Senblawin" and "Belkas." There were no clear effects of cut sequence on nitrate levels in berseem. Values of blood packed cell volume and methaemoglobin percentages and plasma urea concentration did not differ significantly among the three areas (northern, south eastern and control areas). Blood haemoglobin and total protein contents were lower, whereas transaminase activity and blood nitrate contents were higher in buffaloes of the south eastern area than those for animals of the other two areas. The blood ammonia content in the control buffaloes was higher than that of the animals of the northern and south eastern areas. The analysis of milk revealed that nitrate levels were not different among areas or between morning and evening milkings. Total milk protein was higher in the northern area.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:2548453
George, Richard J.
Groundwater systems were studied in the 4200 ha East Belka catchment in a dryland farming area 300 km east of Perth, W.A., to determine the cause of sandplain seeps. Detailed investigations were carried out on a 200 ha hillslope to determine the characteristics of a shallow aquifer system responsible for the salinization of previously productive agricultural soils. The impact of the shallow aquifer on the regional system was investigated. A shallow (less than 8 m), perched, perennial aquifer was encountered in the deep sandplain materials. Groundwater discharge of about 1000 kl year -1 from the perched aquifer maintained saline soils across a 5 ha sandplain seep. Perching is due to the decreased permeability, geometry and silicification of the top of the mottled and pallid zones, and the convergence of perched ground waters near the seep. Slug test measurements suggest that the sandplain soils have a relatively low hydraulic conductivity (0.15 m day -1). Water qualities in the perched aquifer ranged from brackish to saline (3000-8000 mg l -1 TDS), peaking in the salt-affected area (12 000 mg l -1 TDS). High nitrate and Cl/Br ratios occur in the shallow aquifer and in the regional ground water beneath the sandplain seep. Recharge to the deep aquifer takes place throughout the catchment, but is greatest beneath the sandplain seep, where a perennial groundwater mound occurs. Recharge to the regional aquifer was estimated to be 6 to 15 mm year -1, increasing to between 20 and 60 mm year -1 beneath the seep. By contrast, less than 0.3 mm year -1 is able to leave the catchment as regional groundwater flow. Water-levels in the deep bores are consequently rising by 0.05 to 0.25 m year -1. Recharge to the deep aquifer beneath the seep, and low groundwater gradients, create the potential for groundwater flow to take place beneath the topographic divide and towards the adjoining catchment. However, as the vertical flux to the aquifer is two orders of magnitude greater than