bluuebunny/crossref_metadata_2025 huggingface dataset:
ESTIMATION CATEGORIES AND CRITERIA OF MAIN GAS PIPELINES GEOTECHNICAL CONDITION UNDER DYNAMICOF ADVERSE CLIMATIC PROCESSES
Authors: Aleskerova Z. Sh. , Pulnikov S. A. , Sysoev Yu. S.
Published: November 2018

It is offering to solve the row of science-technical problems for efficiency increase of geotechnical monitoring results proceeding methodic. The schemes, criteria and parameters for the definition of categories of geotechnical condition of the main pipelines for underground, semi-underground, ground and above-ground installation. The analysis of geotechnical parameters of evaluation status of gas pipeline, reflecting the stability criterion section on design and operational marks.
THE ISSUE OF APPLICATION OF PHYSICAL AND CHEMICAL TECHNOLOGIES IN THE DEVELOPMENT OF OIL AND GAS FIELDS
Authors: Zakharova E. F. , Levanova E. V. , Farkhutdinov G. N.
Published: November 2018

The efficiency of different physical and chemical technologies used in various areas and Romashkinskoye New-Elkhovskoye oil fields was researched. The result was a conclusion that at high water-cut objects, restriction of movement of water in highly permeable leached zones of a productive layer is one of the main conditions for increasing the efficiency of not only flooding, but also the use of physical and chemical methods based on improving of oil extraction factor.
DEPENDENCE OF COEFFICIENTS OF SATURATION ON TIME AND COORDINATES
Authors: Korotenko V. A. , Kushakova N. P. , Leontyev S. A. , Zaboeva M. I. , Alexandrov M. A.
Published: November 2018

The dependencies are obtained of the coefficient of water saturation as a function of time and coordinates at in-plane radial displacement of oil by water. It is shown, how the water saturation is changing in the process of oilfield development in the hydrodynamic unrelated interlayers (Kazemi model) with different filtration properties, including in case of violation of the law of Darcy.
RELIABILITY ESTIMATION OF MATHEMATICAL DESCRIPTION OF MAIN GAS PIPELINE TOUGH LINE WITH 3RD DEGREE SPLINE
Authors: Lazarev S. A. , Pulnikov S. A. , Sysoev Yu. S. , Kazakova N. V.
Published: November 2018

A method for the mathematical description of gas pipeline curve position, which is identified with the upper line, describing for radius vector with coordinates approximated with a cubic spline. To confirm the authenticity of given dependencies is satisfied with the decision of the check tasks assessment in calculating the position of sinfulness and the upper forming parameter estimates change of the pipeline spatial position. Applying a method based on a comparison the changes of space-time curves previously known function, built by the coordinates of points, defined in two ways: a true and with given inaccuracy
THE ISSUES OF IMPROVEMENT OF ENERGY EFFICIENCY OF ENERGY SAVING
Authors: Smirnov O. V. , Varekhov A. G.
Published: November 2018

The article considers comparative data on the cost of utilities in area of heat and power supplies. The balanced strategy of production of thermal and electrical energy is setted.
PERSPECTIVES OF DEVELOPING BITUMEN SEEPS OF THE BAIKAL RIFT VALLEY
Authors: Podnebesnykh A. V.
Published: November 2018

The article considers the prospects of the Transbaikal energy industry and through development of bitumen seeps genetically connected with sediment-filled rifts. The analysis revealed the most promising sites for appraisal drilling, including Ononsky, Chitino-Ingodinsky, Eravninsky and Ust-Selenginsky districts. Ononsky district is discussed in terms of the typical geological structure of such objects, and their approximate resourses are evaluated.
EVALUATION OF OCCUPATIONAL RISKS IN ROUNT-TRIP OPERATIONS WHEN DRILLING OIL AND GAS WELLS
Authors: Shangareyev R. R.
Published: November 2018

The article presents the analysis of occupational risks when performing round-trip operations during drilling oil and gas wells and provides simple and easy-to-understand methods of occupational risk management. It considers the main negative production factors which harm the health of workers when performing operations on lifting and lowering the drill pipes with the description of mechanical injury-risk factors.
ANALYSIS OF THE EFFICIENCY OF MEMBRANE TECHNOLOGYFOR DRYING OF NATURAL GAS AT GAZPROM FACILITIES
Authors: Shesterikova R. E. , Ovcharov S. N. , Kalinichenko A. Yu. , Shesterikova E. A.
Published: November 2018

The article presents a study on the prospects for the development of field gas treatment technology for transport using membrane plants, provides the energy efficiency study of these plants for natural gas fields.
INCREASING OIL FLOW CAPACITY IN EXTENDED OPERATION PIPELINES IN THE CONDITIONS OF LOW MONEY AND TIME COSTS
Authors: Surikov V. I.
Published: November 2018

An instruction for implementing the increase in the capacity of main pipelines to restore operating pressure has been developed. The implementation of these methods in «Transneft» has shown high efficiency.
HYDRO-GEOLOGICAL CONDITIONS OF DUMPING WASTEWATER WITHIN THE TERRITORY OF THE VYNGAPUROVSKOYE GAS FIELDIN THE YAMAL-NENETS OIL AND GAS PRODUCING REGION
Authors: Lazutin N. K. , Beshentsev V. A.
Published: November 2018

The Central question of this article is to identify the specifics of the hydrogeological conditions of the wastewater, consider the example of Vyngapurovskoye gas field. The concept of the research is determined by the understanding of the disposal of wastewater in an effective and environmentally friendly method of disposal of industrial waste, allowing you to maintain the balance of natural conditions of the northern part of Western Siberia.
MAINTENANCE OF FILTRATION AND CAPACITIVE RESERVOIR PROPERTIES DURING TEMPORARY ISOLATION
Authors: Gasumov R. A. , Kostyukov S. V. , Gasumov R. R. , Lukyanov V. T. , Dudayev S. A.
Published: November 2018

The article provides the analysis of factors affecting the reservoir properties (filtration and capacity) during repair works. It is revealed that the maintenance of filtration and capacitive reservoir properties is ensured by high-quality blocking and unblocking the reservoir, as well as by prevention of clay material swelling. Solution of these problems is possible through proper selection of the bridging agents (nature, type and fractional composition) used in the blocking composition, and various functional additives (salts, polymeric reagents and surfactants). Furthermore, the reasons of clay minerals swelling and various ways to prevent this process are analyzed. It is determined the peculiarities of clay minerals structure are essential for their properties, and in particular, their ability to swell.
FEATURES OF THE STRUCTURE AND OIL AND GAS POTENTIAL OF LOWER CRETACEOUS AND UPPER JURASSIC SEDIMENTS IN WESTERN AREAS OF WESTERN SIBERIA
Authors: Mukher G. .. , Kulagina S. F. , Goryachev A. V. , Pakhomova E. A. , Gladyshev A. A.
Published: November 2018

The features of the geological structure and oil and gas potential of the Bazhenov-Abalak oil and gas complex are discussed. Based on new geological and seismic data, using an integrated approach, the zones of distribution and the boundaries of thinning out of silty sand reservoir rocks of Vogulkinskaya strata were mapped, four traps and two zones (Ourinskaya, Eastern Tolumskaya), which are perspective for hydrocarbon deposits search, were distinguished. In Bazhenov horizon, the zones of development of anomalous sections and bituminous sediments were mapped, laying above Bazhenov formation, which are perspective for hydrocarbon deposits search. Recommendations for further exploration are given.
MAIN FACTORS THAT CONTROL THE DISTRIBUTION OF THE BASIC TYPES OF SECONDARY CHANGES OF RESERVOIR ROCKS
Authors: Podnebesnykh A. V. , Khafizov A. R.
Published: November 2018

Secondary changes in reservoir rocks in the territory of Western Siberia have a regional distribution pattern, and the amount of oil and gas resources, that are in these zones, reaches 30 % of their total number. Part of the objects where the secondary changes are most clearly manifested, has not yet been introduced into the development, what requires a more detailed approach to planning and conducting geological exploration work in perspective areas, where pore space is modified by secondary processes. In this work the main factors that control the distribution of the main types of secondary changes in reservoir rocks were identified: lithofacies, chemical and tectonic.
INTERFERENCE TEST TO FRACTURED INJECTION WELLS: MATHEMATICAL MODEL AND FIELD CASE
Authors: Asalkhuzina G. F. , Davletbaev A. Ya. , Nuriev R. I.
Published: November 2018

This article is devoted to examine the pressure behavior during well tests at the system with two finite-conductivity vertical hydraulic fractures. An approximate numerical solution of the problem is obtained, simu-lation of studies by interference test is conducted. This was done by correlating the amplitude of the pressure in the observation well at the distance between two fractures with the fracture flow conductivity. The established mathematical model is used to interpret field case which have been get by method of interference test on a deposit with the low permeable reservoir.
ACCOUNTING THERMOBARIC CONDITIONS WHEN DETERMINING THE COUNTING PARAMETERS OF ZEOLITE-CONTAINING ROCKS OF PRODUCTIVE RESERVOIRS OF THE BOLSHEKHETSKAYA DEPRESSION FIELDS
Authors: Gilmanova N. V. , Livaev R. Z. , Zikova V. A. , Draganchuk O. A. , Titov Yu. V.
Published: November 2018

The authors of the article have studied structural features of the reservoirs by using microsections descriptions, XRF, SEM photos, particle size distribution, determination of the mass fraction of carbo-nates by thermo gravimetric method, refinement of mineral density by pycnometric method, study of reservoir properties in the temperature and pressure conditions at saturation as kerosene and water and etc. It has been found that due to its physical and chemical characteristics zeolites have significant impacts on the increase in the degree of hydration and the presence of zeolite water; low density and a large fractional free volume of the dehydrated samples; the existence of similar channels with diameters of molecular dimensions in dehydrated crystals. It is shown that for zeolite-containing rocks the most reliable result can be obtained by using in the calculation of the reduced density of the skeleton and transition to thermobaric conditions in the evaluation of reservoir properties and resistivity.
THE INCREASE IN DRILLING DURABILITY OF TRICONE BITS
Authors: Habibullin M. Ya. , Syleymanov R. I. , Filimonov O. V.
Published: November 2018

The process of location error the bit in the chuck was verified experimentally and put into production by measuring the gap between the working surface of the limiting ring and the calibrating surface of the cutter to improve the accuracy of the bit production. Bits having a diameter close to the lower limit value can be processed in a cartridge with a restrictive ring of reduced diameter. The height of cutters is reduced as a result of introduction into production of the method of group interchangeability of sections in height, measured in a direction parallel to the axis of the bit.
CRITERIAL METHOD OF CALCULATIONS OF LONG-TERM STABILITY OF THE BOREHOLE
Authors: Shipilova O. A. , Shafieva S. V.
Published: November 2018

The article examines the possibility of applying the Mohr - Coulomb short-term strength criterion to the calculations of long-term stability of open oil wells. The results of calculation of long-term and short-term strength on the basis of the polygon of stability are analyzed.
STRUCTURAL PECULIARITIES OF THE PROCESS OF ELECTROLYTIC CHROMIUM PLATING IN RESTORATION OF WORN PARTS
Authors: Kovenskiy I. M. , Malysh S. V. , Povetkin V. V.
Published: November 2018

Processes occurring at the metal-electrolyte interface in chrome plating of parts with an inhomogeneous structure have been considered from the standpoint of the band theory of semiconductors. Similarity of processes in the systems metal - semiconductor and metal - electrolyte has been established. A technique for estimating the quality of surface preparation of worn parts for electrolytic chromium plating based on the results of measuring the spread of thermal EMF values has been validated.
GROUNDWATER OF THE MESOZOIC HYDROGEOLOGICAL BASIN IN THE TERRITORY OF THE ETY-PUROVSKY OIL AND GAS FIELD
Authors: Beshentsev V. A. , Abdrashitova R. N. , Lazutin N. K. , Sabanina I. G. , Gudkova A. A.
Published: November 2018

The article considers hydrogeological conditions of the Ety-Purovsky oil and gas field. The authors describe hydrogeological stratification of the field and its hydrogeochemical conditions. These conditions reveal the existence of classical vertical zoning. The research pays attention to the important role of an elution water pressure system in the formation of the hydrogeochemical and hydrogeodynamic fields structure.
POSSIBILITIES OF APPLICATION OF THE METHODOLOGY FOR DETERMINING RATINGS OF A GAS TURBINE ENGINE TO IMPROVETHE QUALITY OF EQUIPMENT DIAGNOSTIC
Authors: Mikhaylenko A. I.
Published: November 2018

The article deals with theoretical and methodological approaches and practical approaches to improve the quality of gas turbine engine diagnostics. The author presents the main results of development of the calculating method for additional ratings in the entire flow section of the gas turbine engine GTE-6,3/MS which is used by LLC «RN-Uvatneftegaz» at the Tyamkinskoye oil field of Uvat district of Tyumen region. The conclusion is drawn that an expanded series of design parameters of a gas turbine engine makes it possible to improve the quality, reliability and depth of diagnostics of both the current state of equipment and after major overhaul.
EVALUATING THE INFLUENCE OF PHOSPHORIC ESTER OF OXYETHYLATED NONYLPHENOL ON TECHNOLOGICAL CHARACTERISTICS OF SOLVENTS OF ASPHALT-RESIN-PARAFFIN DEPOSITS
Authors: Melnikov A. P. , Konovalov V. V. , Sklyuev P. V. , Dalke A. G.
Published: November 2018

The article discusses the results of evaluating the influence of phosphoric ester of oxyethylated nonylphenol (PE NP) on solvent asphalt-resin-paraffin deposits efficiency. Comparative experiments of the changes in solvent technological characteristics, when the content of PE NP is up to 2 vol. %, have been performed. The research shows that usage PE NP significantly not only modifies the solvent technological properties increasing the solvency, the saturation of the solvent asphalt-resin-paraffin deposits, but slightly decreases the rate of the asphalt-resin-paraffin deposits dissolution. We have established that the maximum efficiency of the solvent is observed at concentration of PE NP corresponding to the critical concentration of micelle formation.
DEFINITION OF SEDIMENTOLOGICAL MODEL IN LIMITED INITIAL DATA SET CONDITIONS
Authors: Podnebesnykh A. V.
Published: November 2018

The article considers the main procedures which essentially increase the validity of sedimentological models in limited initial data set conditions. The Bentiu formation (Central Africa) is studied as an example of the research. Using simple and low-cost methods it is possible to identify not only the main direction of sedimentary material displacement but also the main characteristics of alluvial systems that will let to plan exploitation of reservoir formation of such type correctly even on geological exploration stage.
PALEOHYDROGEOLOGY OF THE ANABAR-KHATANGA BASIN
Authors: Chernykh A. V. , Novikov D. A.
Published: November 2018

The hydrogeological history of the Anabar-Khatanga basin covers the period from the Archaean to the Quaternary and includes 12 hydrogeological cycles. The Jurassic-Eopleistocene cycle is the longest during which there were continental conditions of sedimentation with the longest infiltration stage (from the Lower Cretaceous to the Neo-Pleistocene). The salts of the Devonian salt basin play a key role in the formation of the groundwater and brines composition within the following structures: Nordvik, Southern Tigyan, Ilya Kozhevnikova, Ledovka and Belaya.
DRILLING STRATEGY OF HORIZONTAL WELLS AT THE VOSTOCHNO-MESSOYAKHSKOYE OIL FIELD IN CONDITIONS OF HIGH LATERAL HETEROGENEITY OF THE PK1-3 FORMATION
Authors: Kovalenko I. V. , Sokhoshko S. K. , Tengilidi D. I. , Nitkaliev I. M.
Published: November 2018

The article describes the role of the account the lateral heterogeneity of the continental sediments, updating of drilling strategy, and prediction of the occurrence of the formation. Our aim is to describe approaches for the selection of the most optimal arrangement of wells in drilling strategy, taking into account the constantly updated geological information about the formation.
Daniel Ruge: the first neurosurgeon to serve as physician to the president
Authors: Ahmed A. Karim , Martinez-del-Campo Eduardo , Theodore Nicholas
Published: November 2018

The role of chief White House physician has traditionally been held by an individual with a background in a broad medical field, such as emergency medicine, family medicine, or internal medicine. Dr. Daniel Ruge, who served as the director of the Spinal Cord Injury Service for the Veterans Administration and was appointed during President Ronald Reagan’s first term, was the first neurosurgeon to become the chief White House physician. Aside from being the first neurosurgeon to serve in this capacity, Dr. Ruge also stands apart from others who have held this esteemed position because of how he handled Reagan’s care after an attempt was made on the then-president’s life. Instead of calling upon leading medical authorities of the time to care for the president, Dr. Ruge instead decided that Reagan should be treated as any trauma patient would be treated. Dr. Ruge’s actions after the assassination attempt on President Reagan resulted in the rapid, smooth recovery of the then-president. Daniel Ruge’s background, his high-profile roles and heavy responsibilities, and his critical decision-making are characteristics that make his role in the history of medicine and of neurosurgery unique.
Percutaneous endoscopic discectomy in adolescent lumbar disc herniation: a 3- to 5-year study
Authors: Chen Yu , Song Ruoxian , Huang Weimin , Chang Zhengqi
Published: November 2018

OBJECTIVE

The authors sought to investigate the efficiency of percutaneous endoscopic discectomy (PED) in adolescent patients with lumbar disc herniation (LDH), compare PED outcomes in adolescent patients with those in young adult LDH patients as controls, and discuss relevant technical notes.

METHODS

This was a retrospective study involving 19 adolescent LDH patients (age > 13 and < 18 years, 20 discectomies) and 38 young adults (age < 40 years, 38 discectomies) who also had LDH and were matched to the adolescent group for sex and body mass index. The combined cohort included 51 male patients (89.5%) and 6 female patients (10.5%), with an average age of 26.7 years (range 14–39 years). The operated levels included L3–4 in 1 patient (1.7%), L4–5 in 22 patients (37.9%), and L5–S1 in 35 patients (60.4%). Two adolescents (10.5%) exhibited apophyseal ring separation and one (5.3%) had had previous PED. All patients underwent PED under local anesthesia. Outcomes were evaluated through a visual analog scale (VAS), the Japanese Orthopaedic Association (JOA) scoring system, and the modified MacNab grading system.

RESULTS

The mean duration of follow-up was 41.7 months (range 36–65 months). The outcomes in adolescents were satisfactory and comparable with previously reported outcomes of microsurgical discectomy (MD) and conventional open discectomy (COD). The adolescent patients had a faster and better recovery course than the adult patients (p < 0.01). One adolescent patient (5.3%) exhibited recurrence and 2 adults (5.3%) experienced transient dysesthesia; the complication rates were comparable in the 2 age groups (p = 0.47). Prolonged duration of symptoms (p < 0.01) and disc degeneration (p = 0.01) were correlated with lower postoperative JOA values; patients with extrusions had higher postoperative JOA values than those with protrusions (p = 0.01).

CONCLUSIONS

PED may yield favorable results in the treatment of adolescent LDH in terms of short- to medium-term follow-up; restricted discectomy and a conservative rehabilitation program might be advisable. Further long-term studies are warranted to address this rare disease entity.
Stability analysis of soybean [Glycine max (L.) Merrill] genotypes under multi-environments rainfed condition of North Western Himalayan hills
Authors: Bhartiya Anuradha , Aditya J. P. , Kumari Vedna , Kishore Naval , Purwar J. P. , Kant L. , Pattanayak A.
Published: November 2018

In the present study, performance of five promising soybean genotypes over 4 locations during kharif 2013, 2014 and 2015 were investigated using GGE biplot analysis. Location attributed the highest proportion of the variation for all the traits except 100 seed weight ranging from 26.97-86.81% whereas, genotype contributed only 3.01-60.51% and genotype x location interaction contributed 6.01-31.42% of total variation. For 100 seed weight genotype has
contributed major proportion of variation (66.26%) than location (31.08%) and genotype x location interaction (2.65%). Superior genotypes for key traits viz., grain yield (VLS 86) and 100 seed weight (Himso 1685) were effectively identified using GGE biplot graphical approach. It may be stated from present study that, VLS 86 was the closest to ideal genotype with stability for high grain yield as well as earliness. ‘Which-won-where’ study partitioned the testing locations into two mega-environments: first with three locations with VLS 86 as the winning genotype; second mega environment encompassed only one location with Himso 1685 as the winning genotype. Existence mega environments was found correlated with the rainfall pattern and clearly suggested that different entries need to be selected and deployed for realising maximum grain yield in hill zone.
Korištenje i stavovi nastavnika o igrifikaciji u osnovnim i
srednjim školama
Authors: Plantak Vukovac Dijana , Škara Maja , Hajdin Goran
Published: November 2018

Tijekom posljednjih nekoliko godina koncept igrifikacije
je, zbog svog utjecaja na motivaciju i angažman učenika, privukao veliku pažnju znanstvenika i učitelja. Ovaj obrazovni pristup, koji uključuje mehanike igara koje se primjenjuju u nastavnom radu, uglavnom je istražen u kontekstu visokog obrazovanja dok su istraživanja povezana
s nižim razinama obrazovanja rijetka. U radu su prikazani rezultati anketnog istraživanja provedenog među 124 učitelja iz tri osnovne i dvije srednje škole u Hrvatskoj. Učitelji su ispitivani o korištenju igrifikacije u svom nastavnom radu kao i o stavovima prema igrifikaciji općenito. Rezultati istraživanja daju uvid u profile učitelja koji koriste ili ne koriste igrifikaciju u realizaciji nastave te identificiraju mehanike i aplikacije koje se koriste. Prikazana su mišljenja učitelja o tome koji su razlozi za (ne)uvođenje igrifikacije u
nastavu. Prema rezultatima istraživanja moguće je zaključiti kako je manje od polovine ispitanika upoznato s konceptom igrifikacije, te ga primjenjuje u svom radu. Rezultati istraživanja pokazuju da se većina učitelja upoznala s konceptom igrifikacije na osobnu inicijativu. Bodovi, zadaci i priče su mehanike igrifikacije koje ispitanici najčešće
primjenjuju u svom radu. Predmeti u kojima ispitanici najčešće koriste igrifikaciju su matematika, hrvatski jezik te strani jezici. Također, ispitanici se u visokom postotku slažu s učincima i utjecajima igrifikacije na motivaciju te angažman učenika, koji predstavljaju prednosti igrifikacije. Kao razloge za nekorištenje igrifikacije ispitanici navode nedostatak vremena i formalne razloge, dok kao razloge
za korištenje igrifikacije navode povećanje motivacije i angažmana učenika, što je zapravo i cilj koncepta igrifikacije.
THE FORMATION OF COPPER(II) COMPLEXES WITH WATER SOLUBLE N-(FURAN-2-YLMETHYLIDENE)HYDROXYLAMINE
Authors: Volchkova E. V. , Buslaeva T. M. , Safronova I. E.
Published: November 2018

The paper is devoted to the interaction of copper(II) chloride with water soluble β-furfuraldoxime (N-(furan-2-ylmethyliden)hydroxylamine) in hydrochloric solutions. It was been revealed that the degree of copper(II) precipitation from aqueous solutions and hydrochloric solutions with the pH of 4 M HCl by this reagent is not higher than 52% even when the precipitant is used in abundance. These dependencies has been compared to the similar results of palladium(II) precipitation obtained when all other conditions were equal. It has been discovered that various complexes are formed when Cu(II) reacts with a β-furfuraldoxime and that it depends on the acidity of the solution. In weak acid solutions (0.01-0.1 M HCl) the «green» complex of composition [CuL4Cl2] was obtained and in this complex the oxime is coordinated with the central atom by an oxygen atom of the oxime group. The so-called «red» complex of composition [CuL2Cl2] is formed in the pH range of 1-4 M HCl and in ethanol. In this complex the coordination of ligand molecules is realized by the oxygen atom of the furan ring and by the oxygen of the oxime group. Reagent N-(furan-2-ylmethyliden)hydroxylamine can be used for practical quantitative release of palladium from hydrochloric solutions. However, it does not provide the separation of copper and palladium in their joint presence.
PLOTKIN SEMEN YAKOVLEVICH (TO THE 110TH ANNIVERSARY)
Authors: Plotkin S. S. , Dorokhov A. V.
Published: November 2018

The article tells about life and fate of S.Ya. Plotkin, whose 110-th anniversary of birth was marked on March 2016. He was born in 1906 in Melitopole town (Ukraine). Having graduated at the Moscow Institute of Fine Chemical Technology in 1931, he was asked for administration works firstly as the director of the Institute and then as the member of the All-Union Committee for High School problems. During all his life S.Ya. Plotkin successfully combine administrative, scientific, pedagogical and journalistic activities. He was the expert in the problems of hard alloys and powder metallurgy, professor, editor in chief of the journal «History of Natural Sciences and Technique». He was the member of the Journalist’s Union of the USSR, Honorary member of the International Institute for the Sciences of Sintering and Honorary worker of Culture of Russian Federation.
EFFECT OF POLYETHYLENE MOLECULAR MASS CHARACTERISTICS ON SLIP EFFECT
Authors: Yurkin A. A. , Simonov-Emelyanov I. D. , Surikov P. V. , Shembel N. L.
Published: November 2018

The rheological properties of polyethylene with different molecular weight characteristics were studied. Difference of molecular weight characteristics was found on the basis of melt flow index, and slip effect in the molten polyethylene flow was studied. The presence of slip effect is found in case of flowing polyethylene with a higher molecular weight in contrast to polyethylene with lower molecular weight at different temperatures. Changes of the slip effect parameters upon mixing polyethylenes with very much different molecular weight characteristics were studied.
SEPARATION OF A MULTICOMPONENT SYSTEM FORMED IN THE PRODUCTION OF EPICHLOROHYDRIN
Authors: Okhlopkova E. A. , Serafimov L. A. , Frolkova A. V. , Tsekin P. P.
Published: November 2018

Epichlorohydrin is an important product of the basic organic synthesis. One promising direction of epichlorohydrin manufacturing is the liquid-phase epoxidation of allyl chloride with an aqueous solution of hydrogen peroxide in an organic solvent, methanol, in the presence of a heterogeneous catalyst, a titanium-containing zeolite. The multicomponent system of epichlorohydrin production according to this method contains allyl chloride, methanol, water, epichlorohydrin, 3-chloro-1,2-propanediol, 3-chloro-1-methoxypropanol-2 and hydrogen peroxide. In this work the thermodynamic topological analysis of the phase diagram of this multicomponent system of epichlorohydrin production was performed. On the basis of this study a principal technological scheme of separation of the studied system containing five distillation columns and a Florentine vessel was proposed.
THERMOCHEMICAL SYNTHESIS OF NANOSTRUCTURED Y2O3: Eu3+ AND Y2O3:Bi3+,Eu3+ POWDERS AND THEIR LUMINESCENT PROPERTIES
Authors: Davydova O. V. , Drobyshevskaya N. E. , Poddenezhny E. N. , Boiko A. A.
Published: November 2018

This article describes a new method of thermochemical synthesis of luminescent nanostructured powders of Y2O3:Eu3+ and Y2O3:Bi3+, Eu3+ based on the burning of nitrate salts in the presence of a complex organic fuel consisting of a mixture of carbamide and hexamethylenetetramine (HMTA). It is established that using a combined fuel - a mixture of carbamide and HMTA - in a thermochemical reaction followed by calcination of the precursor at 650ºC gives more friable powders than the reaction with pure carbamide as a fuel, with a large amount of cavities. It is shown that when preparing Y2O3:Eu3+powders, complex compounds of anhydrous nitrates Y(NО3)3∙3СO(NH2)2 and Eu(NO3)3∙6CO(NH2)2 with urea are formed at the gel stage. They are decomposed at a higher temperature (about 1200ºС) resulting from the combustion process. As a result, corresponding crystalline oxides are formed. The europium ions replace a part of the yttrium ions in the structure of Y2O3 favouring the formation of a luminescent powder. X-ray diffraction, scanning electron microscopy, and photoluminescence spectroscopy have been used to characterize these powders. The powders synthesized in this manner (calcination at 650ºC) show a sharp peak in the X-ray diffraction picture at 2θ = 28.94° corresponding to crystalline Y2O3 particles with average particle size 62.3 nm. However, when treatment temperature is increased to 1200ºC, and the process duration is 1 h, the average particle size increases to 0.25 microns. Measurement of photoluminescence spectra of the samples revealed a maximum in the red region (λ=612 nm) when exciting at a wavelength of 395 nm (violet radiation). Luminescence intensity increases by 15% when introducing bismuth ions into the Y2O3 matrix and decreases by 30% when calcinating the Y2O3:Eu3+ powders at 1100ºС. The nanostructured Y2O3:Bi3+, Eu3+ powders obtained by the burning method can be applied in systems for protecting valuable security and industrial products, because these powders have special luminescent characteristics allowing to make visual observation of texts and tags under the radiation of LED sources without application of UV-lamps.
SYNTHESIS, PREPARATIVE SEPARATION OF STRUCTURE ISOMERS AND PROPERTIES OF 2-(2-(DIALKYLAMINO)ETHYLAMINO)ETHANOLS OF ARYLALIPHATIC SERIES
Authors: Hoang D. Q. , Borisova E. Ya. , Borisova N. Yu. , Krylov A. V. , Danilkin N. A. , Samokhin A. G.
Published: November 2018

A method for the synthesis of 2-(2-(dialkylamino)ethylamino)ethanols based on the epoxide ring opening in styrene oxide by N,N-disubstituted ethylenediamines was developed. It is shown that the opening of the oxirane ring by diamines in 2-propanol at room temperature occurs mainly according to the Krasusky rule at the bond between the oxygen atom and the less substituted carbon atom. A mixture of two products with the predominance of the secondary diamino alcohol up to 82% was obtained. It was found that the separation of the products by distillation or recrystallization does not allow obtaining pure isomers. The mixture of isomers was converted into dihydrochlorides by dry HCl in dioxane and diethyl ether. Pure 2-(2-(dialkylamino)ethylamino)-1-phenylethanols and 2-(2-(dialkylamino)ethylamino)-2-phenylethanols were separated by the first fractional recrystallization of a mixture of diaminoalcohol dihydrochlorides from a mixed solvent followed by alkalization of the products with an aqueous sodium hydroxide solution. The diamino alcohols were characterized by FT-IR, 1H- and 13C-NMR and HRMS-ESI.
APPROACHES TO CHORIONIC GONADOTROPIN QUANTITATIVE DETERMINATION IN ANTI-DOPING CONTROL
Authors: Zvereva I. O. , Savelieva N. B. , Postnikov P. V. , Efimova Yu. A. , Dikunets M. A.
Published: November 2018

The article presents the results of the first stage of development of a new quantitative method for human chorionic gonadotropin (hCG) determination by means of ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UPLC-MS/MS) to uncover doping abuse by athletes. The identified tryptic peptides correspond to the most abundant hCG isoforms: the α- and β-subunits, the nicked and β-core fragment of the hormone. Identification and sequencing of specific fragments were performed with the use of nanoLC-MS/MS. A high resolution / high accuracy hybrid mass-spectrometer was applied. Optimization of mass-spectrometric determination of selected specific peptides was accomplished by UPLC-MS/MS. Quantitative evaluation of hCG using specific fragments determination by UPLC-MS/MS allows to detect corresponding hCG isoforms. This significantly increases the method specificity and decreases the probability of false-positive results.
STRUCTURAL DYNAMICS OF FREE MOLECULES AND CONDENSED MATTER. Part I. THEORY AND EXPERIMENTAL TECHNIQUE
Authors: Ischenko A. A. , Tarasov Y. I. , Schäfer L.
Published: November 2018

To understand the dynamic features of molecular systems with a complex landscape of potential energy surfaces, it is necessary to study them in the associated 4D space-time continuum. The introduction of time in the diffraction methods and the development of coherent principles of the research process opened up new approaches for the study of the dynamics of wave packets, intermediates and transient states of the chemical reactions, short-lived compounds in the gaseous and condensed media. Time-resolved electron diffraction, the new method for the structural dynamic studies of free molecules, clusters and condensed matter, differs from the traditional method of electron diffraction both in the experimental part and in the theoretical approaches used in the interpretation of diffraction data. Here there is particularly pronounced the need of a corresponding theoretical basis for the processing of the electron diffraction data and the results of spectral investigations of the coherent dynamics in the field of intense ultrashort laser radiation. Such unified and integrated approach can be formulated using the adiabatic potential energy surfaces of the ground and excited states of the systems under study. The combination of state-of-the-art optical techniques and electron diffraction methods based on different physical phenomena, but complementing each other, opens up new possibilities of the structural studies at time sequences of ultrashort duration. It provides the required integration of the triad, "structure - dynamics - functions" in chemistry, biology and materials science.
γ-PNA PREORGANIZATION: SYNTHESIS OF MODEL DIMER AND ITS STRUCTURE STUDY BY 2D NMR SPECTROSCOPY
Authors: Dezhenkov A. V. , Cheshkov D. A. , Prokhorov I. A. , Lutik A. I. , Kirillova Yu. G.
Published: November 2018

The synthesis of a dimer consisting of γ-thymine chiral monomer based on L-Ala and thymine aeg-PNA monomer (synthesized from deuterated glycine), in which the methylene protons of the pseudopeptide residue were exchanged with deuterium atoms, was described. The deuterated monomer was introduced into acylation reaction by means of a mixed anhydride procedure with γ-PNA chiral monomer trifluoroacetate based on L-Ala. The latter was obtained from the fully protected thymine monomer by the reaction with trifluoroacetic acid. The structure and purity of the target monomer were confirmed by NMR-spectroscopy, and the elemental composition was estimated by quantitative elemental analysis. The double quantum filtered COSY-NMR-spectroscopy (DQF-COSY) method was used to determine the methylene signals of the dimer chiral fragment. With the use of the spectrum analysis, the chemical shifts and calculated spin-spin coupling constants of the protons from the dimer chiral part were found. Given that Karplus equation associates the value of the dihedral angle between the vicinal protons with their spin-spin coupling constant, it was concluded that the chiral fragment is in the right-helix conformation for all the dimer rotamers.
LOGICAL-INFORMATION MODEL OF EVALUATION THE IMPACT OF TARGETED THERAPy DRUGS ON THE BIOLOGICAL ACTIVITy OF CANCER CELLS
Authors: Burlyaev V. V. , Davydenko А. , Kornyushko V. F. , Russu L. I. , Mezentseva M.
Published: November 2018

The paper deals with laboratory preclinical studies of the impact of targeted anticancer drugs on the life of A-549 cell cultures of the cancer origin (lung carcinoma). Preclinical studies enable evaluating the effectiveness of targeted therapy drugs, possible contraindications and side effects in order to determine in future the scope of clinical trials and the possibility of performing them. It is proposed to develop information support of preclinical research. In this work the use of functional modeling technology for building a logic-information model in the category of IDEF0 is considered. For detailed elaboration of the model it is necessary to review step-by-step the whole research process. The necessity of creating the information support is connected to the tasks of structuring, storage and processing large amounts of experimental data.
THE PYROCARBON FORMATION MECHANISM DURING THE HYDROCARBON PYROLYSIS PROCESS
Authors: Peshnev B. V. , Filimonov A. S. , Baulin S. V. , Sledz O. S. , Asilova N. Yu.
Published: November 2018

Experimental results confirming the mechanism of pyrocarbon formation through the steps of high-molecular pyrolysis products forming in the gas phase are presented. Adsorption of high-molecular pyrolysis products on the active centers of the substrate localized at the boundaries of the contacts of its crystallites and their subsequent carbonization is confirmed. The decreasing in the length of the substrate crystallites contact boundaries leads to the increase in the content of high-molecular compounds in the gas and to the decrease in the hydrogen concentration is shown. The relation between the composition of the exhaust gas and the surface of the sealing material creates the prerequisites for controlling the pyro-consolidation process according the composition of the off-gas. The composition of high-molecular liquid pyrolysis products was identified. The difference in the composition of high-molecular pyrolysis products of the propane-butane fraction and the electric cracking gas was established. The influence of raw materials and pyrolysis conditions on the group composition of high-molecular pyrolysis products formed is shown.
Die neueren Wanderungsbewegungen polnischer Arbeitskräfte
Authors: Sakson Andrzej
Published: November 2018

Seit dem 19.Jahrhundert ist Polen ein Auswanderungsland. Zwischen 1870 und 1914 verließen Polen auf der Suche nach Brot und Arbeit über fünf Millionen Menschen, allein zwei Millionen in Richtung Amerika. Zwischen 1918 und 1939 wanderten nochmals 1,2 Millionen Menschen aus. Hauptrichtungen der Emigration waren die Vereinigten Staaten, Kanada, Argentinien, Brasilien und West-Europa. Zwischen 1944 und 1950 wanderten zwar 7,9 Millionen Menschen über die polnischen Grenzen, per saldo wanderten aber nur 190 000 Personen aus. Diese Bewegungen hatten nicht so sehr wirtschaftliche, sondern vor allem politische, nationale und familiäre Gründe. Erst 1956 beginnt wieder eine neue Welle der Emigration. Bis 1960 wandern im Rahmen der »Familienzusammenführung« 360 000 Menschen hauptsächlich in die BRD aus. Dem steht eine Einwanderung von 250 000 Personen vor allem aus der UdSSR gegenüber. In den beiden Jahrzehnten von 1961 bis 1970 und 1971 bis 1980 verlassen jeweils ca. 225 000 Menschen das Land.
EFEITO DO TRATAMENTO HIDROTÉRMICO ASSOCIADO AO ETANOL NA QUALIDADE DE MANGA TOMMY ATKINS
Authors: Oliveira Vilar Silvana Belém de , Castro Maria Fernanda Pontes Penteado Moretzsohn de , Sigrist José Maria Monteiro , Araújo Ana Julia Brito , Schmidt Flavio Luis
Published: November 2018

A manga é uma fruta de grande expressão nas exportações brasileiras, porém, como barreira fitossanitária alguns países importadores exigem que as mesmas recebam um tratamento hidrotérmico  para o controle de moscas-das-frutas. Alternativas do uso do etanol no controle de microrganismos e fitopatógenos em vegetais têm sido estudadas. Este trabalho avaliou a influência do tratamento hidrotérmico e sua associação com 1% de etanol na qualidade de mangas cv. Tommy Atkins armazenadas a 10ºC/90%UR. Foram realizados experimentos com 200 frutos em estágio de maturação 2, comparando-se o tratamento controle (mangas lavadas, secas e armazenadas), o tratamento hidrotérmico sem etanol e o tratamento combinando o banho hidrotérmico com 1% de etanol. Concluiu-se que os parâmetros de qualidade das mangas não foram afetados pelo banho hidrotérmico nem pela adição de etanol. O etanol associado ao banho térmico pode ser uma ferramenta no controle de patógenos em mangas, sem afetar a qualidade durante o armazenamento refrigerado nas condições desse estudo.
THE EFFECT OF REASONS FOR ATTITUDES ON FISH PRODUCT CONSUMPTION
Authors: Ho Tuu Duy
Published: November 2018

This paper examines how positive and negative evaluations explain attitudes and their impact on behavior as well as the attitude-behavior consistence of consumers towards fish products. The author used descriptive statistics and regression analysis on a sample of 361 consumers in Khanh Hoa province to address the research objectives. The results indicate that the quality of nutrition and taste have the highest ratio in explaining positive attitudes; meanwhile the food safety quality, fish bone, bad smell, scales and dirtiness are the dominant factors explaining negative attitudes. The results also indicate that consumers with more reasons for their positive attitudes have a higher consumption behavior and a greater attitude-behavior consistence. By contrast, consumers with more reasons for their negative attitudes have a lower consumption behavior. However, the attitude-behavior relationship is not affected by the amount of negative reasons. These findings are important to the fish businesses in increasing the purchase rates of consumers.
Purification of recombinant human fibroblast growth factor-2 from one-liter fermentation broth
Authors: Tran Thy Tien Anh , Nguyen Trinh Thi My , Tran Hieu Van
Published: November 2018

Fibroblast Growth Factor - 2 (FGF-2), also known as basic FGF is a multifunctional protein that regulates the proliferation and differentiation of multiple types of cell. Recombinant human FGF-2 (rhFGF-2) is currently used in medicine, cosmetics, stem-cell culture, etc. In this study, we conducted one-liter scale fermentation using Escherichia coli strain that carries recombinant vector harboring FGF-2 coding gene to produce a large amount of FGF-2 protein. The evaluation of the fermentation efficacy was based on the growth curve, dry cell weight and amount of FGF-2 obtaining from one-liter fermentation. After fermentation, cell mass was lyzed by high pressure. Then, the FGF-2 in supernatant was purified by cation exchange and heparin-affinity chromatography. The purity and efficiency of the purification process were estimated by Bradford, silver staining and densitometry using QuantityOne software. The result showed that in oneliter fermentation, we obtained 5.2 g/liter dry cell-mass and 230 mg/liter FGF-2. The purity of FGF-2 was about 97.1 % and the purification efficiency was above 46.08 %.
Pengembangan Antarmuka Pemrograman Aplikasi Menggunakan Metode RESTful pada Sistem Informasi Akademik Politeknik Kota Malang
Authors: Wijonarko Dwi , Mulya Betta Wahyu Retna
Published: November 2018

Kemudahan akses informasi antar perangkat dan media saat ini menjadi hal yang sangat lazim ditemukan. Adalah satu fungsi penting dalam pengembangan aplikasi yaitu kemampuan untuk mengembangkan aplikasi menjadi lebih besar dan mampu diterapkan dalam berbagai macam platform serta perangkat yang ada saat ini. Pengembangan antarmuka pemrograman aplikasi adalah salah satu cara agar suatu aplikasi / sistem dapat diakses serta dimanfaatkan oleh pihak lain tanpa harus mengubah kode utama sistem dan basis data sistem serta memudahkan komunikasi antar sistem meskipun berbeda platform. Sistem Informasi Akademik Politeknik Kota Malang, menerapkan antarmuka pemrograman aplikasi menggunakan metode RESTful untuk berkomunikasi dengan sistem lain seperti aplikasi mobile, sistem kepegawaian dan keuangan. REST (Representational State Transfer Protocol) merupakan metode pengembangan web service yang menonjolkan kesederhaan dan menggunakan fitur yang ada pada HTTP untuk mendapatkan sumberdaya saat menggunakan web service tersebut.
Perancangan dan Pembuatan Aplikasi Website E-Commerce untuk Produk Kerajinan Tangan UMKM Nena Namo
Authors: Sholiq Sholiq , Yunita Cahya , Astuti Hanim Maria , Susanto Tony Dwi , Herdiyanti Anisah , Ghozali Khakim
Published: November 2018

Usaha Mikro-Kecil dan Menengah (UMKM) Nena Namo adalah UMKM yang berfokus pada produksi kerajinan tangan yang menggunakan karung goni dan kain belacu sebagai bahan dasar untuk membuat produknya. UMKM Nena Namo juga memiliki keunikan lain yang membuat produknya memiliki karakteristik yaitu desain motif yang dilukis secara manual menggunakan tangan. Produk kerajinan yang dipasarkan beragam, seperti tas, dompet, kotak tisu, sapu tangan, sampul makanan, kotak pensil, taplak meja, dan sebagainya. Mekanisme penjualan untuk UMKM Nena Namo saat ini terbatas pada pelanggan memesan melalui SMS, telepon, atau datang langsung ke rumah produksi Nena Namo. Untuk memperluas pasar dan memanfaatkan internet sebagai sarana penjualan produknya, maka pada penelitian ini UMKM Nena Namo membuat aplikasi website e-commerce. Mempertimbangkan keunikan atau karakteristik produk kerajinan UMKM ini yang ada pada desain aksesorisnya, situs web e-commerce akan dilengkapi dengan fitur untuk membuat desain kustomisasi produk oleh pelanggan. Pada penelitian ini telah dihasilkan sebuah aplikasi website e-commerce untuk UMKM Nena Nemo yang telah diuji dengan test case berbasis use case. Kelebihan artikel ini terletak kerunutan perancangan dan pembuatan aplikasi yang dimulai dari wawancara, analisis kebutuhan pengguna, perancangan, pengkodean, dan pengujian yang dapat dirunut tahap per tahap.
PREDICTION OF AIR PERMEABILITY OF KNITTED FABRIC BY USING COMPUTATIONAL METHOD
Authors: SIDDIQUI Muhammad Owais Raza , ALI Muhammad , ZUBAIR Muhammad , SUN Danmei
Published: November 2018

Air permeability is one of the very important factors which need to be considered at the development stage of textile fabrics because it affects the comfort of the clothing. During normal and extreme environmental conditions human body releases heat and the heat can be controlled by the air exchange between the body and clothing microclimate and the external environment; the exchange phenomena depends on the air permeability of the fabric. The air permeability of fabric can be evaluated by both the experimental and computational methods. In this work, a computational method is used for the prediction of air permeability of fabrics. The geometrical model of weft knitted structures was generated by using the actual dimensional parameters of the fabric and was further analysed by applying appropriate boundary conditions. The simulated results obtained from computational analysis were compared to the experimental results. Furthermore, the validated models were further used to predict and analyse the effect of stitch length, stitch density and fibre volume fraction on the air permeability of the fabric.