The soil conditions of the oak stand in the south-west part of Belarus

In the soil and climatic conditions of the oak stands (Quercus robur L.) grown installed: features of the state land-ground-water conditions on the water phy sical properties and moisture capacity; the regu-larities of distribution and content of nutrients were revealed; the granulometric composition of soil were established and the group and factional composition of humus were determined. The studies found that in the Bi alowieza Forest oak-woods grow on sod-podzolic and brown forest sandy and sabulous soils underlain by moraine loam. Oak-woods in the floodplains of Pripyat grow on floodplain sod gley sabulous soils with content of physical clay in humus horizons up to 20%. Soil conditions of oaks by water-physical characteristics, moisture reserves and agrochemical indicators are better in floodplain forests, while by density and granulometric texture – in upland types of oak-woods

Features of collection of spicy-aromatic plants in the botanical garden

The article presents the results of studying the coll ection material of spice and aromatic plants in the Botanical Garden of Belarusian State Agricultural Academy based on morphological, morphometrical and phenological characteristics. It also presents data on yield in a phase of technological maturity, seed productivity as well as specifies basic quality indicators. Collection of spicy-aromatic plants in the Botani cal Garden of BSAA is represented by 58 species that belong to 14 tribes and 40 genera. Collection of spicy-aromatic pl ants is divided into three sections: the most common, rarely used and advanced culture. Research new varieties of spicy-aromatic plants ( Ocimum basilicum L. (Volodar, Nastena, Magiya), Ocimum tenuiflorum L. (Istochnik), Allium × proliferum (Allium cepa × Allium fistulosum) (Uzgorak), Allium odorum L. (Vodar), Borago officinalis L. (Blakit), Geranium macrorrhizum L. (Tanyusha)) that are included in the State Re gister of varieties of the Republic of Belarus. Varieties has a complex of economically valuable sings and are used as a vegetable and decor plants

Correlation between length-weight and age in Barbus sharpeyi and Barbus grypus broodstocks in artificial propagation

This study was carried out to identify proper broodstock of Barbus sharpeyi and Barbus grypus using working fecundity indices. For Barbus sharpeyi three female groups were chosen based on previous experiences that included treatment 1: 650±300g, 1±0.5 years, (T.L) 40.68±2.7cm, treatment 2: 1350±350g, 2.5±0.5 years, (T.L) 47.92±4.63cm and treatment 3: 2200±400g, 4±0.4 years, and (T.L) 59.62±3.56cm. The same male broodstock (700±80g) and 2 year old fish were used for all treatments. For Barbus grypus three female groups were chosen using previous experiences that included treatment 1: 2212.5±780g, 2.5±0.5 years, (T.L) 62.68±6.7cm, treatment 2: 4518±780g, 4±1 years (T.L) 79.12±4.36cm and treatment 3: 7712.5±171g, 7.7±1.3 years and (T.L) 92.62±3.13cm. The same male broodstock (1400±100g) and 2 year old fish were used for all treatments. Female broodstock of the two species were injected 3mg/kg of PG hormone two times at an interval of 10 hours and males were injected 2mg/kg. The maximum working fecundity was seen in treatment 2 for Barbus sharpeyi (33000±1450) and Barbus grypus and (13000.37±4651.57). Functional fecundity were calculated for Barbus sharpeyi in all treatments which was significantly different between treatment 2 and other treatments for the two species. After this stage, the working fecundity was decreased in treatments. We conclude that treatment 2 is the best for selection of broodstocks in the two fish species

Metal-insulator transition induced by 16O -18O oxygen isotope exchange in colossal negative magnetoresistance manganites

The effect of 16O-18O isotope exchange on the electric resistivity was studied for (La(1-y)Pr(y))0.7Ca0.3MnO3 ceramic samples. Depending on y, this mixed perovskite exhibited different types of low-temperature behavior ranging from ferromagnetic metal (FM) to charge ordered (CO) antiferromagnetic insulator. It was found that at y=0.75, the substitution of 16O by 18O results in the reversible transition from a FM to a CO insulator at zero magnetic field. The applied magnetic field (H >= 2 T) transformed the sample with 18O again to the metallic state and caused the increase in the FM transition temperature Tc of the 16O sample. As a result, the isotope shift of Tc at H = 2 T was as high as 63 K. Such unique sensitivity of the system to oxygen isotope exchange, giving rise even to the metal-insulator transition, is discussed in terms of the isotope dependence of the effective electron bandwidth which shifts the balance between the CO and FM phases.Comment: 5 pages (RevTeX), 2 eps figures included, to appear in J. Appl. Phys. 83, (1998

Environmental safety of phytogenic fields formation on coal mines tailings

Objective of the study is to research peculiarities of phytogenic fields formation of natural and artificial plantations of shrub and ruderal vegetation on coal mining waste heaps within the Novovolynsk mining area (Ukraine). The biometric analysis of the growth of artificial plantations on tailings has been carried out applying forest inventory methodology, which involves laying temporary experimental areas, measuring the diameter of tree species at a height of 1.3 m, the total height of trees and the parameters of crowns. Variation was applied to study the spatial structure of vegetation on reclaimed and damped waste heaps. The models of artificial phytocenoses and ameliorants on waste heaps of coal mines, which are formed during forest reclamation, have been described. The paper presents an analysis of forest inventory characteristics of the crops phytocenosis on waste heaps. The spatial structure of phytogenic fields basing on variation of the most common species in natural and artificial plantations on waste heaps has been established. This allows us to select an assortment of species to conduct effective vegetative reclamation on the surface of tailings. The article presents result of studies on the formation of phytogenic fields on waste heaps of coal mines, which presuppose formation of aggregations. It has been proved that formation of phytogenic fields is inextricably connected with vegetative reclamation. The conducted research of the origin and distribution of phytogenic fields makes it possible to assess the degree of suitability of tailings for afforestation, regardless of the country in which they are formed. Research of phytogenic fields on tailings and waste heaps of coal mines will improve bioindication research methodology for studying forest crops on their surface and suggest innovative methods of handling. In particular, it is possible to raise the level of environmental safety and aesthetics of the devastated territories, and to reduce cost of vegetative reclamation

Environmental safety of phytogenic fields formation on coal mines tailings

Objective of the study is to research peculiarities of phytogenic fields formation of natural and artificial plantations of shrub and ruderal vegetation on coal mining waste heaps within the Novovolynsk mining area (Ukraine). The biometric analysis of the growth of artificial plantations on tailings has been carried out applying forest inventory methodology, which involves laying temporary experimental areas, measuring the diameter of tree species at a height of 1.3 m, the total height of trees and the parameters of crowns. Variation was applied to study the spatial structure of vegetation on reclaimed and damped waste heaps. The models of artificial phytocenoses and ameliorants on waste heaps of coal mines, which are formed during forest reclamation, have been described. The paper presents an analysis of forest inventory characteristics of the crops phytocenosis on waste heaps. The spatial structure of phytogenic fields basing on variation of the most common species in natural and artificial plantations on waste heaps has been established. This allows us to select an assortment of species to conduct effective vegetative reclamation on the surface of tailings. The article presents result of studies on the formation of phytogenic fields on waste heaps of coal mines, which presuppose formation of aggregations. It has been proved that formation of phytogenic fields is inextricably connected with vegetative reclamation. The conducted research of the origin and distribution of phytogenic fields makes it possible to assess the degree of suitability of tailings for afforestation, regardless of the country in which they are formed. Research of phytogenic fields on tailings and waste heaps of coal mines will improve bioindication research methodology for studying forest crops on their surface and suggest innovative methods of handling. In particular, it is possible to raise the level of environmental safety and aesthetics of the devastated territories, and to reduce cost of vegetative reclamation

Minimal invasive surgery for patients with urolithiasis with early postoperative rehabilitation in Truskavets

Introduction. Undoubtedly, technological progress, the "conquest" of civilization leads to a deterioration of the environmental situation. It affects the human body, causing a violation of homeostasis, due to disorders in it.The purpose of the work. In view of the above, the task was to study the peculiarities of the process of the use of minimally invasive techniques in patients with urolithiasis treated in the period from 2012 to 2017 in the urological department of the Truskavets City Hospital and in the private office of lithotripsy Ya.V. Feciak in the complex with the use of medical water "Naftusya" during treatment and in the early postoperative period as a means of metaphysics of recurrent stone formation and quicker rehabilitation of patients.Materials and methods of research. The treatment of 1757 patients with urolithiasis in the urological department of Truskavets city hospital and the private office of lithotripsy Ya.V. Fetsiak for the period of 2012 - 2017. The study included 681 patients with kidney stones, 1045 patients - with ureteric stones and 31 patients with urinary bladder specimens. 357 contact nephrolithotripsy, 491 contact ureterolithotripsy (CULT), 27 contact cystolithotripsy and 2074 extracorporeal shock-wave lithotripsy (ESWL) sessions were performed for these patients. Men were 946 (54%), women 811 (46%). The age of the patients ranged from 18 to 84 years. The size of the concretions localized in the ureter ranged from 0.6 cm to 3.4 cm and, as a rule, was 0.9-1.2 cm. The maximum size of the kidney stone was 9.5 cm, and the average size varied within 1 , 4-27cm.ESWL was performed on the Dornier Compact S machine. In the 882 patients, 2074 procedures were carried out for the ESWL, which was 2.35 procedures per patient. In the planned period, 71% of patients, 29% in urgent (at the height of the renal colic or within the next 30 hours) were treated.Results In the contingent of patients treated with ESWL, medical water "Naftusya" was used before the crushing session and exchange course for 2-3 weeks three times a day at a temperature of 17-20 degrees C in an amount of 10 ml per kilogram of weight per day. Patients, who used contact lithotripsy "Naftusya" were prescribed from the second day after the operation, that is, when in the postoperative period, complete peristalsis of the colon was restored. Doses were identical, as in patients with ESWL.Our long experience in treating patients with urolithiasis has shown recurrence of stone formation in 10-15% of patients with urolithiasis within five years of intervention. The latter is much lower compared to the literature without the use of water "Naftusya".Conclusions1. ESWL - an effective out-patient method of removing concretions from the urinary tract.2. Contact lithotripsy, along with ESWL - modern methods for the elimination of concretions from urinary tract with short bed day and minimization of surgical trauma.3. Therapeutic water "Naftusya" - an effective means of metaphysics of urolithiasis.4. Early postoperative rehabilitation of patients with urolithiasis is possible only on the territory of Truskavets.5. The use of water "Naftusya" can significantly reduce the recurrence of stone formation in patients with urolithiasis, which makes this balneotherapy a "gold standard" in metaphilactics and early post-operative rehabilitation of patients with urolithiasis

Lattice dynamics of coesite

The lattice dynamics of coesite has been studied by a combination of diffuse x-ray scattering, inelastic x-ray scattering and ab initio lattice dynamics calculations. The combined technique gives access to the full lattice dynamics in the harmonic description and thus eventually provides detailed information on the elastic properties, the stability and metastability of crystalline systems. The experimentally validated calculation was used for the investigation of the eigenvectors, mode character and their contribution to the density of vibrational states. High-symmetry sections of the reciprocal space distribution of diffuse scattering and inelastic x-ray scattering spectra as well as the density of vibrational states and the dispersion relation are reported and compared to the calculation. A critical point at the zone boundary is found to contribute strongly to the main peak of the low-energy part in the density of vibrational states. Comparison with the most abundant SiO2 polymorph - α-quartz - reveals similarities and distinct differences in the low-energy vibrational properties

АПТЫМІЗАЦЫЯ АГРАХІМІЧНЫХ ПРЫЁМАЎ ВЫРОШЧВАННЯ ФАСОЛІ АГАРОДНІННАЙ

In the researches on sod-podzolic sandy loamy soil the application of mineral fertilizers N30-70P40K90, microelements (boric acid, ammonium molybdate, liquid complex fertilizer) and growth regulators (epin, hydrohumate, mаltamin) increases the yield of green beans by 19.05–21.22 dt/ha and raw protein content by 15.4–16.4%. The optimization of agrochemical methods while cultivating green beans ensures the net income 6,5–89,5 $/ha with the profitability 16–61 %.В исследованиях на дерново-подзолистой супесчаной почве применение минеральных удобрений N30-70P40K90 увеличило урожайность бобов фасоли овощной в фазу технологической спелости на 49,8–70,8 ц/га, микроудобрений (борная кислота, молибдат аммония, жидкое комплексное удобрение для бобовых) – на 9,6–14,2 ц/га, регуляторов роста (эпин, гидрогумат, мультамин) – на 9,9–10,4 ц/га, жидкого комплексного удобрения для бобовых и эпина (со-вместное внесение) – на 7,8–15,6 ц/га при общей урожайности бобов в удобренных вариантах 190,5–212,2 ц/га и со-держании сырого протеина 15,4–16,4 %. Оптимизация агрохимических приемов при возделывании овощной фасоли обеспечила получение чистого до-хода 6,5–89,5 долл./га с рентабельностью 16–61 %

Odnos strukture i aktivnosti u reaktivaciji tabunom fosforilirane ljudske acetilkolinesteraze bispiridinijevim para-aldoksimima

We investigated interactions of bispyridinium para-aldoximes N,N’-(propano)bis(4-hydroxyiminomethyl) pyridinium bromide (TMB-4), N,N’-(ethano)bis(4-hydroxyiminomethyl)pyridinium methanosulphonate (DMB-4), and N,N’-(methano)bis(4-hydroxyiminomethyl)pyridinium chloride (MMB-4) with human erythrocyte acetylcholinesterase phosphorylated by tabun. We analysed aldoxime conformations to determine the flexibility of aldoxime as an important feature for binding to the acetylcholinesterase active site. Tabun-inhibited human erythrocyte acetylcholinesterase was completely reactivated only by the most flexible bispyridinium aldoxime - TMB-4 with a propylene chain between two rings. Shorter linkers than propylene (methylene or ethylene) as in MMB-4 and DMB-4 did not allow appropriate orientation in the active site, and MMB-4 and DMB-4 were not efficient reactivators of tabun-phosphorylated acetylcholinesterase. Since aldoximes are also reversible inhibitors of native acetylcholinesterase, we determined dissociation constants and their protective index against acetylcholinesterase inactivation by tabun.Proučavali smo interakcije bispiridinijevih para-oksima N,N’-(propano)bis(4-hidroksiiminometil)piridinijeva bromida (TMB-4), N,N’-(etanano)bis(4-hidroksiiminometil)piridinijeva metanosulfonata (DMB-4) i N,N’- (metano)bis(4-hidroksiiminometil)piridinijeva klorida (MMB-4) s ljudskom eritrocitnom acetilkolinesterazom fosforiliranom tabunom. Da bismo odredili fleksibilnosti aldoksima, što je važna osobina kod njihova vezanja u aktivno mjesto acetilkolinesteraze, analizirali smo i konformacijske odlike aldoksima. Ljudska acetilkolinesteraza inhibirana tabunom bila je potpuno reaktivirana samo najfleksibilnijim bispiridinijevim aldoksimom – TMB-4. Aldoksimi MMB-4 i DMB-4 nisu bili efikasni reaktivatori acetilkolinesteraze fosforilirane tabunom jer je kod tih spojeva lanac koji povezuje dva prstena kraći od propilena (metilen u MMB-4 i etilen u DMB-4), što ne dopušta povoljnu orijentaciju tih aldoksima unutar aktivnog mjesta enzima. S obzirom na to da su aldoksimi i reverzibilni inhibitori nativne acetilkolinesteraze, odredili smo njihove disocijacijske konstante, kao i zaštitu acetilkolinesteraze od inhibiranja tabunom reverzibilnim vezanjem aldoksima