bluuebunny/crossref_metadata_2025 huggingface dataset:
Simulation modelling of wind-induced sea level fluctuations at the ports of the Odesa Region in the North-Western part of the Black Sea
Authors: Tuchkovenko Yu. S.
Published: June 2019

The paper is devoted to discussion of the prospects of simplified 2D hydrodynamic model use aimed at forecasting the wind-induced sea level fluctuations within the area of sea ports (Chornomorsk, Odesa and Yuzhnyi) of the Odesa Region in the North-Western part of the Black Sea. Spatio-temporal variability of wind conditions at the sea-atmosphere division is specified based on the data of the global numerical weather prediction model of the Global Forecast System (GFS). The research includes the description of the mathematical structure of the hydrodynamic model and the results of its adaptation to the conditions of the simulated sea area. It presents the results of model verification in the version which implies adoption of wind data from the archives of GFS-analysis and GFS-forecasts for 2010, 2016 and 2017. The verification was performed by comparing wind-induced denivellations of the sea level at the ports of Chornomorsk, Odesa and Yuzhnyi calculated over the course of modelling and those established on the basis of observational data (with the discreteness of 6 hours). A quantitative assessment of the calculation accuracy was performed for the cases where, according to the observational data, level denivellations exceeded the value of the standard deviation for the entire series. New series of the observed and calculated model-based significant wind-induced denivellations of sea level were formed for each of the ports from the sets of samples that met this condition. Using  these series estimates of the mean square error of the calculations, allowable error of calculations, correlation coefficient between the actual and calculated values of the level denivellations, the probability of the calculation method under the allowable error were obtained. It was established that in the case of use of the data from wind GFS-analysis (with spatial resolution of 0.5° both latitudinally and longitudinally) over the course of modelling the probability of calculation of significant sea level denivellation constitutes 84-85%, and in case of using the data from the GFS-archive of wind forecasts (with spatial resolution of 0.25°) – 88-91%. This allowed making a conclusion that the model has good prospects of use for operational forecast of the sea level fluctuations caused by storm wind in the version implying assimilation of the predicted information on the spatio-temporal variability of wind conditions obtained by means of the GFS global weather forecast model.
SWOT analysis of the urbanized area environmental component (using the example of city of Odesa)
Authors: Safranov T. A. , Prykhodko V. Yu. , Shanina T. P. , Husieva К. D.
Published: June 2019

Urbanized areas are characterized by a concentration of anthropogenic sources of pollution, and their functioning is a major factor of environmental change. A comprehensive environmental quality assessment, study of the city's environmental component and its impact on the living conditions enable directing the environmental situation management in such a way that allows achieving the optimum possible state of the urbanized areas' natural component. Odesa is a large multifunctional city with extremely diverse anthropogenic impact. This leads to the formation of unfavorable environmental situation. The work is aimed at providing a SWOT analysis of the environmental component of city of Odesa. To achieve this goal, we analyzed the main natural and anthropogenic factors that affect the formation of the ecological situation within the territory of Odesa. The SWOT analysis consists in identifying the Strengths (S) and Weaknesses (W) of the internal environment of the object under research, the Opportunities (O) and Threats (T) of the external environment and establishing the link between them. When speaking about urban systems, the Strengths are different environmentally positive situations, capabilities and properties of the city. The Weaknesses include the existing environmental problems. The Opportunities of the external environment include natural potential of surrounding territories, as well as environmentally positive socio-economic conditions of regional and national levels. The Threats of the external environment include factors that are able to cause harm to the city environment and may cause deterioration of the environmental situation therein. The paper analyzes the existing environmental problems such as a high level of air basin pollution by emissions from mobile and stationary pollution sources, marine environment pollution by pollutants present in sewage and other return waters, surface runoff originating in the city; poor state of water supply and sewage networks; insufficient quality of drinking water from surface and underground water sources; soil contamination by heavy metals, oil products and other pollutants; insufficient landscape gardening of certain city areas and unsatisfactory state of green plantations therein; formation of technogenic groundwater and flooding of the large part of the city's territory; development of dangerous exogenous geological processes; presence of acoustic and electromagnetic pollution sources; poor management and treatment of industrial and consumption waste; presence of environmentally hazardous industrial facilities; unsatisfactory health status of urban  inhabitants; low level of environmental culture among citizens. Based on the analysis of internal (strengths and weaknesses) and external (opportunities and threats) factors, a set of measures to improve the environmental situation in Odesa is offered.
Fatores anti-nutricionais de importância na nutrição animal: Estratégias de diminuição dos efeitos anti-nutricionais
Authors: De souza Carla Giselly , Moura Andrezza Kyarelle Bezerra de , Silva Jennifer Nandes Pereira da , Soares Kilmer Oliveira , Silva Joelma Vasconcelos Celestino da , Vasconcelos Priscylla Carvalho
Published: June 2019

Secondary metabolites also known as anti-nutritional factors are nothing more than natural components responsible for exerting physiological functions in plants. They are substances that, even in vestigial state, reduce or prevent the use of a nutritive element, either at the digestive level, or at the metabolic level. However due to the important importance in animal nutrition that some ingredients exert, they need to undergo a chemical or physical process to make it feasible to use in animal nutrition, without, however, having to "suffer" from the adverse effects of excessive consumption of certain secondary compounds. Thus, the present review aims to elucidate the strategies to reduce the effects inherent to the antinutritional factors in the animals' diet. Heat treatment, extrusion, pelletizing and milling are widely used methods for reducing and / or inactivating undesirable substances in food. In addition, some animals naturally and evolutionarily have developed strategies to cope with these factors.
Detecção de escherichia coli pelo sistema petrifilmTM em queijo minas frescal embalados à vácuo
Authors: Silva Anderson , Storti Bruno Campos , Ferreira Márcia de Lima , Souza Stefania Marcia de Oliveira
Published: June 2019

Minas cheese is a food widely consumed in Brazil, very perishable and susceptible to contamination. This study aimed to detect the presence of E. coli by Petrifilm technique in vacuum packed products. The results were satisfactory, since the E. coli count only two units, 6.6% of the samples showed higher score than allowed by law, 63.3%, nineteen samples showed negative score and 30%, nine units had E. coli count within the allowable value. Already total coliforms also detectable by PetrifilmTM system showed a worrying result as the sanitary conditions in the manufacture of cheese, where 43.3%, thirteen samples showed high colony count and 56.7%, seventeen samples were negative. With these results it is concluded that despite efforts to maintain the quality, there are still flaws in the manufacturing process, stressing the need to control all critical control points in the industry as well as effective monitoring system.
Tecnologias de embalagens no pescado: aplicações e tendências
Authors: Costa Maria
Published: June 2019

The development of new packaging technologies has been increasing with the purpose of guaranteeing the sensorial and nutritional quality of the food, as well as the food safety of the consumer, since they avoid the physical, chemical and microbiological deterioration of the food. With this, the present work aimed at the theoretical search on the active technologies applied in packaging for fish conservation. To do so, a bibliographic survey of scientific works was carried out in the databases ScienceDirect, Periodical CAPES and Scientific Electronic Library Online using the following descriptors: Packaging, modified atmosphere fish, active packaging fish and intelligent packaging fish.
Características microbiológicas da água e das superfícies de bebedouros da Universidade Federal do Paraná – setor Palotina
Authors: Rodrigues Carolina
Published: June 2019

Water can serve as a vehicle for several pathogens to humans and the contamination of poorly sanitized equipment surfaces can contribute to poor microbiological quality of water. The aim of this research was to assess the hygienic-sanitary quality of drinking water and drinking fountain surfaces of the Federal University of Paraná - Sector Palotina. A Standard Operating Hygiene Procedure (PPHO) was established for the hygiene of drinking fountains and training was applied to the sector responsible for the hygienization standardization. There were 392 evaluations of 24 drinkers distributed throughout the Sector, totaling 784 microbiological analyzes of surfaces and 37 of water. The evaluated parameters were: count of aerobic mesophilic microorganisms and total coliform, thermotolerant and Escherichia coli. All drinkers (100%) had mesophilic aerobic microorganisms counts above 30 CFU/cm2 in at least one of the evaluations performed. Of the 24 drinkers, 17 (70.8%) had total coliforms, seven (33.3%) had thermotolerant coliforms and in six (25%) the presence of Escherichia coli was verified. Of the water samples, 31 (83.8%) were adequate for consumption. All drinking fountains were unsuitable for use; however the microbiological quality of the water did not appear to have been affected. The results can be a reflection of the great flow of use of the equipment, as well as the proximity to sanitary facilities. Therefore hygiene-sanitary monitoring activities of water and drinking fountains and continuous training and verification work are important.
Глубокая переработка свинцово-цинковых руд и промпродуктов с получением продукции повышенной товарности
Authors: Бейсембаев Б.Б. , Кенжалиев Б.К. ,   Institute of Metallurgy and Ore Beneficiation JSC, Satbayev University, Горкун В.И. , Говядовская О.Ю. , Игнатьев М.М.
Published: June 2019

Монография посвящена теоретическому обоснованию и созданию рациональных технологий переработки некондиционных свинцово-цинковых руд на примере месторождения Коксу методами геотехнологии, а также сульфидных с иштцово-цинковых промподуктов обогащения на примере месторождения Жайрем с применением способа сульфатизации концентрированной серной кислотой.
Fleshing Out an Ecological Habitus: Field and Capitals of Radical Environmental Movements
Authors: Kirby Jeff
Published: June 2019

This article relates the theoretical concept of ecological habitus to the specific context of radical environmental movements. I begin by examining how the term “ecological habitus” has been interpreted by sociologists to date and identify two evident tensions in relation to Bourdieu’s original notion of habitus. I then expand the concept of ecological habitus by considering field and capital(s) within radical environmental movements. I suggest that two broad streams of environmental concern, reformist environmentalism and ecologism, shape ecological habitus in different ways. I also advance that these same theoretical frameworks interact with organic and built habitats in particular ways that can in turn connect and shape ecological habitus to immediate landscape. Finally, I deal with the complexity of transferring ecological habitus (single field) to contemporary society (multiple fields) and propose an alternative term, green habitus, to describe an ecologically relevant habitus that occurs within contemporary society.
Anthropocene Dynamics in the Prehistoric Pacific
Authors: Leppard Thomas P.
Published: June 2019

How will human societies evolve in the face of the massive changes
humans themselves are driving in the earth systems? Currently, few data exist with which to address this question. I argue that archaeological datasets from islands provide useful models for understanding long-term socioecological responses to large-scale environmental change, by virtue of their longitudinal dimension and their relative insulation from broader biophysical systems. Reviewing how colonizing humans initiated biological and physical change in the insular Pacific, I show that varied adaptations to this dynamism caused diversification in social and subsistence systems. This diversification shows considerable path dependency related to the degree of heterogeneity/homogeneity in the distribution of food resources. This suggests that the extent to which the Anthropocene modifies agroeconomic land surfaces toward or away from patchiness will have profound sociopolitical implications.
Water Use and User Attitudes
Authors: Ditty John Marr , Totti Maria Eugênia
Published: June 2019

Common-pool resources (CPRs) are subtractable resources that are physically or institutionally available for many users. The present study sought primary participant observation and focus group data on a Brazilian CPR-dependent community. It analyzes this data through the lens of CPR theory to assess ongoing local natural resource management efforts against longitudinal changes related to large-scale state and private development projects. The findings indicate that real or perceived changes related to the resources, technology, human populations, and decision-making processes in the study area have disrupted social arrangements and resulted in natural resource degradation. The article argues that, in order to achieve sustainability objectives, CPR-guided policy formulation must consider the social
embeddedness of community-based actors and resources within their wider
historical and social contexts, as well as user attitudes and relations among
shifting conditions on multiple scales.
3d Solid Modeling and Pre-Static Finite Element Modeling of Intact Human Tibia
Authors: ALMUTAIRI MUTLAQ
Published: June 2019

This paper presents a standard solid model for human tibia, accounting for the material characteristics of cortical bone, cancellous bone and bone marrow. A CT scan of a cadaveric human tibia was used as the basis of developed model. A total of 201 CT scan slices of the tibia were taken with the distances between the scans varying along the length of the bone with a higher density at the proximal and distal ends, as those were the regions of interest. The data was imported into MIMICS (Materialise), and the

threshold method was used to differentiate between the cortical bone region, cancellous bone region, and the bone marrow cavity. The solid model used to generate the FE model is constructed based on CT scan data of an actual cadaveric human tibia. The geometric information is retrieved and edited in (MIMICS). The surfaces defining the cortical bone, the proximal and distal epiphyseal cancellous bone and medullar cavity regions are converted into NURBS surfaces using (GEOMAGIC STUDIO).
Agrokemijska svojstva melioriranih krških tala za uzgoj vinove loze
Authors: Gluhić David , Rigo Paolo
Published: June 2019

U priobalnom i otočnom dijelu Republike Hrvatske značajne površine krša obrasle su degradiranom makijom i slabom šumskom vegetacijom. Takva tla predstavljaju potencijal za kultivaciju i melioraciju, kako bi se mogli zasaditi novi nasadi vinove loze. Kultivacija krša podrazumijeva zahtjevne zahvate za pripremu tla pogodnog za uzgoj poljoprivrednih kultura, kao što su čišćenje i uklanjanje nadzemne vegetacije, niveliranje terena, ripanje ili pikamiranje, rigolanje, te mljevenje i usitnjavanje kamena. Krško tlo je tlo u kojem prevladavaju sedimentne stijene – uglavnom vapnenci i rjeđe dolomiti, soli te gips – koje su podložne mehaničkoj i kemijskoj eroziji. Za potrebe proučavanja agrokemijskih svojstava melioriranih krških tala, uzeti su uzorci tla u proizvodnim vinogradima (lokacije na kojima su u periodu 2008-2009. provedene melioracije), na tri različite lokacije; Istarska županija (lokacija okolica Rovinja), Zadarska županija (lokacija Ravni kotari) i Splitsko-dalmatinska županija (lokacija otok Brač). Na svakoj lokaciji uzeta su dva prosječna uzorka tla, sa dubine od 0-30 cm i 30-60 cm, oko 1,0-1,5 kg tla i usitnjene kamene frakcije (nakon što je iz pojedinačnih uzoraka tla izdvojen kamen i kamena frakcija veća od 25 mm). Najveći problem koji se može uočiti nakon 10-tak godina provođenja melioracije krških tala je pojava visoke količine karbonata (CaCO3), povišene pH vrijednosti (pH>7,0) i vrlo niske količine biljci pristupačnog fosfora i željeza u tlu. Sa stajališta gnojidbe vinove loze, i ostalih drvenastih kultura na melioriranim krškim tlima, potrebno je naći učinkovita i primjenjiva rješenja za navedene probleme koji negativno utječu na plodnost tla.
Kemijska i senzorna karakterizacija vina ´Chardonnay´
Authors: Jagatić Korenika Ana-Marija , Puhelek Ivana , Tomaz Ivana , Jeromel Ana
Published: June 2019

Tijekom berbe 2017. proizvedena su četiri vina ´Chardonnay´ uz upotrebu različitih komercijalno dostupnihsojeva Saccharomyces cerevisiae i bayanus kvasaca te je uspoređen njihov aromatski profil. Primjenom ekstrakcije na čvrstoj fazi te vezanim sustavom plinska kromatografija- spektrometar masa, u vinima je identificirano oko 70 hlapljivih spojeva. Analizirani spojevi, podijeljeni u 7 kemijskih grupa, značajno su utjecali na senzorni profil vina i njihovu različitost. Rezultati su pokazali značajan i pozitivan utjecaj korištenih sojeva kvasaca na neke grupe spojeva koji doprinose kakvoći vina, poput etil-estera, izoamil i izobutil-acetata, nekih viših alkohola te monoterpena (linalol, citronelol i geraniol). Određena je i aktivna mirisna vrijednost (OAV) pojedinih aromatskih spojeva koji su prema sličnosti deskriptora grupirani u aromatske serije poput voćne, cvjetne, začinske i maslačne, što je omogućilo i opisno definiranje aromatskog profila svakog vina.
Količina fosfora u korijenu celera korjenaša na tržištu grada Zagreba
Authors: Petek Marko , Fabek Uher Sanja , Karažija Tomislav , Jurišić Anita , Lazarević Boris , Herak Ćustić Mirjana
Published: June 2019

Celer je povrće koje se odlikuje visokom nutritivnom i zdravstvenom vrijednosti. Fosfor je u ljudskom organizmu od iznimne važnosti za žuč, bubrege i probavu. Dnevna potreba u ljudskoj ishrani za fosforom kod odraslog čovjeka iznosi 700 mg. Cilj ovog istraživanja bio je utvrditi količine fosfora u korijenu celera korjenaša prikupljenom na tržištu grada Zagreba. Uzorkovanje je provedeno 2016. na dvije tržnice, u dva trgovačka lanca i u dvije trgovine ekološkim proizvodima. Uzorci su sušeni na 105 °C do konstantne mase nakon čega su mljeveni i homogenizirani. Nakon razgradnje s HNO3 i HClO4 fosfor je određen spektrofotometrijski. Rezultati istraživanja pokazali su znatno variranje u količini fosfora u korijenu celera, u suhoj tvari od 0,50 do 0,93% P, a u svježoj tvari od 67 do 90 mg P/100 g svježe tvari, ovisno o prodajnom kanalu. Konzumacijom 100 g celera iz ovog istraživanja može se podmiriti od 9,8 do čak 12,8%. dnevnih potreba za fosforom.
Bakterijske i virusne bolesti rajčice i paprike u Hrvatskoj
Authors: Ivić Dario
Published: June 2019

U proteklih nekoliko godina u Hrvatskoj su zabilježene relativno visoke štete od pojedinih bakterijskih i virusnih bolesti u proizvodnji rajčice i paprike. Uzročnici tih bolesti bile su bakterije Pseudomonas syringae pv. tomato i Clavibacter michiganensis ssp. michiganensis te virusi Tomato spotted wilt virus (TSWV) i Cucumber mosaic virus (CMV). U članku su ukratko opisani spomenuti patogeni, njihovo širenje te mjere zaštite.
Stanje i perspektiva proizvodnje žitarica i uljarica u Republici Hrvatskoj
Authors: Iljkić Dario , Zebec Vladimir , Kovačević Vlado , Antunović Manda , Rastija Mirta , Varga Ivana , Kranjac David
Published: June 2019

Poljoprivredna proizvodnja u Hrvatskoj, općenito, ima važan značaj pri čemu biljna proizvodnja čini više od 50% ukupne poljoprivredne bruto proizvodnje. Najveću ulogu imaju žitarice i uljarice čija proizvodnja dominira u Panonskoj regiji s naglaskom na njen istočni dio. Cilj ovog rada je prikazati zasijane površine, ostvarenu proizvodnju i vanjskotrgovinsku razmjenu kukuruza, pšenice, ječma, soje, suncokreta i uljane repice tijekom petnaestogodišnjeg razdoblja (2003. - 2017.) u Hrvatskoj. Od ukupnih obradivih površina u analiziranom razdoblju žitarice (kukuruz, pšenica i ječam) zauzimaju oko 60% obradivih površina, a uljarice (soja, suncokret i uljana repica) oko 13%. Analizom podataka utvrđen je trend smanjenja površina pod žitaricama, naročito kukuruza, dok su uljarice pokazale trend rasta pri čemu su površine soje i uljane repice u zadnje tri godine gotovo udvostručene. Pristupanje Republike Hrvatske jedinstvenom tržištu Europske unije pozitivno je utjecalo na povećanje neto izvoza žitarica i uljarica. Prosječni volumen neto izvoza žitarica i uljarica za pet godina članstva u EU se više nego utrostručio u odnosu na prosjek predpristupnog perioda promatranog od 2003. do 2013. godine. Domaće cijene žitarica i uljarica prate trendove cijena na jedinstvenom tržištu uz stabilan razvoj nakon ulaska Hrvatske u Europsku uniju.
Anorexia nerviosa y psiquiatría transcultural
Authors: García Montero C. , Geijo Uribe S. , Mongil López B. , Vaquero Casado M.
Published: June 2019

Se presenta el caso de una adolescente de 16 años, descendiente de una familia de origen chino, que ingresa en la Unidad de Psiquiatría Infanto-Juvenil por pérdida importante de peso e hipocalemia. Se realiza una revisión de las características de la psiquiatría transcultural y las consecuencias derivadas del proceso migratorio.
Microdeleción 1q21.1 y psicosis. A próposito de un caso
Authors: Rivera Moya MP , Fernández Alonso A , Rodríguez Criado N , Mesian Pérez I
Published: June 2019

La microdeleción 1q21.1 no constituye por sí misma un síndrome clínico reconocible, ya que algunas personas con la deleción no presentan hallazgos clínicos y otras tienen repercusiones variables. Sin embargo, se han descrito alteraciones relacionadas con la ausencia de los genes localizados en dicho fragmento. Entre estas características se incluyen microcefalia, rasgos faciales dismórficos, alteraciones oculares, defectos cardíacos, anomalías genitourinarias, malformaciones esqueléticas, convulsiones, retraso en el neurodesarrollo, dificultades en el aprendizaje y discapacidad intelectual leve. En cuanto a patologías psiquiátricas, hay mayor incidencia de trastornos del espectro autista, trastorno por déficit de atención con hiperactividad, trastornos de ansiedad y del estado de ánimo, trastornos del sueño y esquizofrenia.

Presentamos el caso clínico de una paciente portadora de microdeleción 1q21.1 hospitalizada en una Unidad de Psiquiatría del Niño y el Adolescente por sintomatología delirante y alucinaciones.
Statistical Estimation of the Awareness of the Working Age Population about Harmful Consumption of Alcohol as a Risk Factor of Cardiovascular Diseases
Authors: Ryngach N. О.
Published: June 2019

The article is devoted to the analysis of awareness of the working age population about alcohol abuse as a risk factor for cardiovascular diseases according to the results of a sociological study.
The goal is to identify and characterize the awareness of residents of the Dnipropetrovsk region about the harmful alcohol consumption, personal attitudes and practices of drinking, the possibility of minimizing its harmful effects for the prevention and treatment of cardiovascular diseases, as well as the activity to correct this risk factor.
The method of personalized formal interviews is used. The survey of a representative sample of the population of working age (N2000) was carried out according to a specially developed methodology of qualitative and quantitative research stages and data collection tools. The study was conducted in 2017 on request of the Dnipropetrovsk Regional State Administration with the financial support of the World Bank.
The gap between the almost complete awareness of the respondents (95.1%) and the harmful effects of alcohol abuse on existing cardiovascular disease or its possible future occurrence and actual practice of use was revealed. The majority of respondents reported that they drank alcohol (57.6%) now or had consumed it before (15%).
It was shown that men prevailed in the group of those who consumed alcohol almost daily or several times a week (33.3% of those who consumed alcohol, versus 9.5% among women). The most common portion of alcohol among respondents (51.1%), consumed in one take, did not exceed three standard drinks.  The main reasons that prompted alcohol consumption were unwillingness to “fall out” from the team (more than 75% of respondents); national traditions (40%); way to relieve stress (25%).
The expediency of studying changes in the situation regarding the prevalence of harmful use of alcohol, habitual practices of its use, activity to minimize harmful effects from the review of prevention and treatment of cardiovascular diseases in particular and adherence to a healthy lifestyle as a whole, after a certain time interval according to a similar methodology has been proved. The results of the survey can be used to assess the effectiveness of measures to improve the health literacy of the population, increase the motivation to change behavior in favor of health, building composite indicators.
Internal gravity and infrasound waves during a hurricane in Moscow On May 29, 2017
Authors: Kulichkov S. N. , Chunchuzov I. P. , Popov O. E. , Perepelkin V. G. , Golikova E. V. , Bush G. A. , Repina I. A. , Tsybulskaya N. D. , Gorchakov G. I.
Published: June 2019

The results of recording of internal gravity waves (IGWs) and infrasound waves from the warm and cold fronts associated with the atmospheric storm passing through Moscow on May 29, 2017 are presented. The waves were recorded by a network of 4 microbarographs IFA–MGU–MSR–ZNS located in Moscow and Moscow region, and compared with the data of measurements of the parameters of infrasound waves at infrasound station IS43 in Dubna. We study the temporal changes in the characteristics of IGWs and infrasound waves (coherence, direction of propagation,phase velocities, characteristic periods and frequency spectra) with the passage of warm and cold fronts through the network. The transition from the gravity to the acoustic dispersive branch of acoustic-gravity waves due to an increase in frequency and the temporal modulation of the phase velocity of infrasound waves caused by IGWs are also studied. The measurement data for PM10 aerosol concentrations and NO2 gas concentrations at various locations in Moscow during a passage of atmospheric storm are presented. The possibility of detecting wave precursors of atmospheric storms simultaneously in variations of atmospheric pressure, wind velocity and aerosol concentrations is studied.
Tidal and planetary waves in the lower thermosphere and ionosphere simulated with the EAGLE model for January 2009 sudden stratospheric warming conditions
Authors: Vasiliev P. A. , Bessarab F. S. , Karpov I. V. , Klimenko V. V. , Klimenko M. V. , Sukhodolov T. V. , Rozanov E. V.
Published: June 2019

This paper presents the analysis of planetary waves and tidal variability during January 2009 in the mesosphere, thermosphere, and ionosphere simulated with two versions of the EAGLE model. It is shown that sudden stratospheric warming (SSW) occurred in January 2009 leads to an increase in the planetary and tidal wave activity in the lower thermosphere. The features of the solar-migrating and non-migrating components of tidal variations in the thermosphere, ionosphere, and electric fields are considered. The reproduction of the vertical electromagnetic drift during the SSW period over the Jicamarca station is explained by a significant increase in the diurnal and semi-diurnal tidal activity.
Description of the perturbations of oceanic geostrophic currents with linear vertical velocity shear taking into account friction and diffusion of density
Authors: Kuzmina N. P. , Skorokhodov S. L. , Zhurbas N. V. , Lyzhkov D. A.
Published: June 2019

A spectral problem of Orr-Sommerfeld type for describing stable and unstable disturbances of oceanic geostrophic flows with linear vertical velocity shear is considered. Calculations of eigenvalues, increments of growth rate of unstable modes, and eigenfunctions of the fastest growing disturbances are presented. It is found that the instability of the flow is observed over a wide range of horizontal scales: in addition to long-wave perturbations with a phase velocity exceeding the maximum flow velocity and perturbations with scales of the Rossby radius, short-wave modes with scales much smaller than the Rossby radius (sub-mesoscale structures) exist. The results of the model are used to describe intrusions in the Arctic basin, which are observed under conditions of absolutely stable stratification.
Clay minerals in sediments from contact zones with basalt sills
Authors: Kurnosov V. B. , Sakharov B. A. , Geptner A. R. , Konovalov Yu. I. , Goncharov E. O.
Published: June 2019

Clay minerals (fraction <0.001 mm) of Upper Pleistocene clayey-sandy-silty sediments recovered by DSDP Holes 481 and 481A in the Northern Trough, Guaymas Basin, Gulf of California, were studied by X-ray based on the modeling of diffraction patterns and their comparison with experimental diffractograms. Terrigenous clay minerals are represented mainly by dioctahedral micaceous varieties (mixed-layer disordered illite-smectites, illite) with the chlorite admixture and by kaolinite in the upper section of unaltered sediments. Intrusion of hot basalt sills (total thickness of the complex is about 27 m) provoked alterations in the phase composition of clay minerals in sediments (7.5 m thick) overlying the sill complex. These sediments include newly formed triooctahedral layered silicates (mixed-layer chlorite-smectites, smectite). Sediments inside the sill complex include trioctahedral mixed-layer mica-smtctite-vermiculite or trioctahedral smectite. The trioctahedral mixed-layer chlorite-smectite coexisting with smectite was found in a single sample of the same complex.
Conditions for the formation of Fe‒Mg metasomatic carbonates in the Lower Riphean terrigenous-carbonate sediments of the Southern Urals
Authors: Krupenin M. T. , Michurin S. V. , Sharipova A. A. , Garayeva A. A. , Zamyatin D. A. , Gulyaeva T. Ya.
Published: June 2019

Fe–Mg carbonate metasomatites in the limestones of the Suran suite of the Lower Riphean in the Avzyansky ore district of the Bashkir meganticlinorium are represented by large deposits of Fe-magnesite (Ismakaevo deposit) and breinerite stocks (Bogryashka deposit). The metasomatic zonality is represented by a series of limestone — dolomite — Fe-magnesite (breinerite). Ferrous magnesite contains up to 8 mol. % FeСO3. In breinerite iron saturation varies from 10 to 45 mol. % FeСO3. The metasomatic fluid was a brine of Ca, Na, Mg chlorides with an impurity of Fe, and was connected with the remobilization processes of evaporite brines buried in sediments of the Lower Riphean. The salinity and homogenization temperature of fluid inclusions in magnesites are in the range of 20–26% eq. NaCl and 200–240°C, and in breinerites — 10–15% eq. NaCl and 140–190°C, respectively. The interaction of fluid with terrigenous rocks in the tectonically active zone of the Mashak riftogenic graben led to the enrichment of various ligands and more active hydrothermal redeposition in the metasomatic products of medium and heavy lanthanides. During the migration of fluid through the limestone unite in the cooling process, Fe-magnesite of the Ismakaevo deposit was formed in the frontal zone, and the breinerite of Bogryashka deposit — in the rear zone adjacent to the shale source of brine.
Detrital monazite from Upper Jurassic sediments in the central part of the Frolov megadepression, Western Siberia: chemical dating and provenances
Authors: Erokhin Yu. V. , Khiller V. V. , Ivanov K. S.
Published: June 2019

Detrital monazite from Upper Jurassic sediments in the central part of the Frolov megadepression, West Siberian megabasin, is studied. Chemical composition of the mineral is studied and data on its age (chemical dating) are presented. Most monazite clasts are characterized by low roundness and their age corresponds to the Lower Paleozoic. Upper Jurassic sediments were likely derived not only from the local Early Paleozoic rock complexes (altaides), which make up the pre-Jurassic basement of the Frolov megadepression, but also from rocks located east and south of this megadepression.
Wave boundary layers in a stably-neutrally stratified ocean
Authors: Reznik G. M.
Published: June 2019

The theory of wave boundary layers developed in [7], is generalized to the case of stably-neutrally stratified ocean consisting of upper homogeneous and lower stratified layers. In this configuration, in addition to the boundary layers near the ocean bottom and/or surface, a wave boundary layer develops near the interface between the layers in the lower stratified part of basin. Each the boundary layer is a narrow domain characterized by sharp, growing in time, vertical gradients of buoyancy and horizontal velocity. As in [7], the near interface boundary layer arises as a result of free linear evolution of rather general initial fields. An asymptotic solution describing the long-term evolution is presented and compared to exact solution; the asymptotic solution approximates the exact one fairly well even on not very large times.
Spatial and temporal variability of the transformation of dissolved matter runoff in the Mezen’ River estuary
Authors: Savenko A. V. , Demidenko N. A. , Pokrovsky O. S.
Published: June 2019

Spatial and temporal variability of the transformation of dissolved matter runoff in the Mezen’ River estuary is studied by results of the complex hydrological-hydrochemical researches lead in 2009 and 2015. The conservative behavior of major ions and dissolved forms of Li, Rb, Cs, Sr, B, F, As, Sb, and Mo is demonstrated. The additional input into solution reaching 93 and 32–38% of content in the river water mass is determined for phosphates and silicon. This is caused, apparently, by mobilization of these nutrients from pore waters of regularly tide-stirred bottom sediments and vertical mixing of the water column. The desorption flux of barium and uranium due to long-term interaction of terrigenic material with saline waters exceeded their input with a continental runoff reaching 180–380 and 90–150% of content of these elements in the river waters. Up to 50, 43, 29, 32, 44, 50, and 45% of Fe, Pb, Y, La, Ce, Pr, and Nd supplying with river runoff which are present in the form of strong organic complexes are removed from solution at the beginning of the mixing zone due to coagulation of colloids. It is drawn a conclusion on spatial homogeneity and long-term stability of transformation features of dissolved matter runoff in the Mezen’ River estuary. Peculiar characteristic of migration of dissolved phosphates, silicon, barium, and uranium are caused by hydrological features of the estuary.
The accumulative coasts dynamics in enclosed bays of Antarctica (in example the key area of the South Georgia microcontinent)
Authors: Dunaev N. N. , Leont’yev I. O.
Published: June 2019

The object of direct study represents the accumulative coast of the King Edward Bay of the South Georgia island of the same name microcontinent of Antarctica. In terms of neotectonic uplift of the island of accumulative coastal processes zone pairing of land and sea are being implemented in areas of relative tectonic subsidence. Geological-geomorphological studies and mathematical modeling of lithodynamic coastal zone give leave highlight the main factors of its current state and to justify the forecast of development in the XXI century.
Winter study of Antarctic zone of the Southern Ocean (to the 25-th anniversary of the Soviet-Russian-American drift station “Weddell-1”)
Authors: Antipov N. N. , Bagriantsev N. V. , Danilov А. I. , Klepikov А. V.
Published: June 2019

The information concern oceanographic investigations in 1980-90 within Antarctic sea-ice formation area together with “International oceanographic study of Antarctic Zone” ( “iAnZone”) program is given. The supreme component of these investigations became the soviet-american winter expedition “Ice Station Weddell-1” (ISW-1), supported by “Academic Fedorov”(SU), “Nathaniel Palmer” (US) and drift station (3.02.92–9.06.92). The water mass structure and circulation patterns in most remote part of the Weddell Gyre, including Western boundary current parameters and bottom water from the shelf were for the first time defined.
Engineering geophysical studies in the Black Sea from onboard the R/V Ashamba during 2017
Authors: Dmitrevskiy N. N. , Ananyev R. A.
Published: June 2019

In May and October 2017, expeditionary research was carried out in the area of Gelendzhik in the Black Sea at the R/V «Ashamba». The main tasks were the mapping of the seabed and the search for small-sized objects at the bottom of the water area using a WASSP WMB-3250 multibeam echo sounder. Surveys included areal surveying and drawing up bathymetric maps of test sites in Gelendzhik Bay and in the transition zone from the shelf to the continental slope. In addition, the echo sounder was used to search and determine the exact coordinates of the bottom seismograph installed at the seabed near the Divnomorskoye village in May 2016. The article presents the results of the work carried out.
On Boolean Representation of Continuous Data Biclustering
Authors: Michalak Marcin , Ślęzak Dominik
Published: June 2019

Biclustering is considered as the method of finding two–dimensional subgroups in a matrix of scalars. The paper introduces a new approach to biclustering continuous matrices on the basis of boolean function analysis. We draw the strong relation between inclusion–maximal (maximal with respect to inclusion) biclusters of the assumed maximal difference between the data in a bicluster and prime implicants of a boolean function describing the data. These biclusters are called similarity biclusters. In the opposition to them, a new notion of dissimilarity biclusters was also introduced in the paper.
Ticket utilization and implementation: Investigating use patterns of the Ticket to Work program from the consumer’s perspective
Authors: Hanson Ardis , Dillahunt-Aspillaga Christina J. , Smith Tammy Jorgensen
Published: June 2019

BACKGROUND:

The Ticket to Work Incentives and Improvement Act provides work incentives for Social Security Administration (SSA) beneficiaries with various disabilities. Of the 9,963,114 tickets “rolled” out, approximately 64,000 Tickets were used. The small amount utilized indicated a further need to investigate individual Ticket usage.

OBJECTIVE:

This article takes a policy perspective, exploring and discussing personal experiences of Supplemental Security Income beneficiaries who received a “Ticket to Work” in 2003.

METHODS:

A small pilot survey was administered to five beneficiaries. A close read of the responses in concert with a discursive approach was conducted to determine additional factors that may play a role in the participants’ decisions to use their Tickets.

RESULTS:

Participants were overwhelmed with the amount of information provided in the Ticket packages and perceived disincentives (e.g., loss of existing health care and disability benefits) to act on their Tickets.

CONCLUSIONS:

Considering the ambiguity expressed by the participants, customized employment may be a viable solution to reduce load on agencies and increase participation in Federal programs. From a policy perspective, this study illustrates the value of small pilot studies and first-person accounts to determine participants’ ability to understand complex activities and to decide to act. It also reinforces the importance of consumer-led input into long-term support programs.
Computer-aided identification of interstitial lung disease based on computed tomography
Authors: Yin Nan , Shen Cong , Dong Fuwen , Wang Jun , Guo Youmin , Bai Lu
Published: June 2019

OBJECTIVE:

Identification of interstitial lung disease (ILD) may be difficult in certain cases using pulmonary function tests (PFTs) or subjective radiological analysis. We evaluated the efficacy of quantitative computed tomography (CT) with 3-dimensional (3D) reconstruction for distinguishing ILD patients from healthy controls.

MATERIALS AND METHODS:

We retrospectively collected chest CT images of 102 ILD patients and 102 healthy matched controls, and measured the following parameters: lung parenchymal volume, emphysema indices low attenuation area LAA910 volume, LAA950 volume, LAA910%, and LAA950%, and mean lung density (MLD) for whole lung, left lung, right lung, and each lobe, respectively. The Mann-Whitney U test was used to compare quantitative CT parameters between groups. Receiver operating characteristic (ROC) curves, Bayesian stepwise discriminant analysis, and deep neural network analysis were used to test the discriminative performance of quantitative CT parameters. Binary logistic regression was performed to identify ILD markers.

RESULTS:

Total lung volume was lower in ILD patients than controls, while emphysema and MLD values were higher ( P < 0.001) except LAA910 volume in right middle lobe. LAA910 volume, LAA950 volume, LAA910%, LAA950%, and MLD accurately distinguished ILD patients from healthy controls (AUC >0.5, P < 0.05), and high MLD was a significant marker for ILD (OR = 1.047, P < 0.05).

CONCLUSIONS:

This quantitative CT analysis can effectively identify ILD patients, providing an alternative to subjective image analysis and PFTs.
The effects of mis-centering on radiation dose during CT head examination: A phantom study
Authors: Isa I.N.C , Rahmat S.M.S. , Dom S.M. , Kayun Z. , Karim M.K.A
Published: June 2019

There are several factors that may contribute to the increase in radiation dose of CT including the use of unoptimized protocols and improper scanning technique. In this study, we aim to determine significant impact on radiation dose as a result of mis-centering during CT head examination. The scanning was performed by using Toshiba Aquilion 64 slices multi-detector CT (MDCT) scanner and dose were measured by using calibrated ionization chamber. Two scanning protocols of routine CT head; 120 kVp/ 180 mAs and 100 kVp/ 142 mAs were used represent standard and low dose, respectively. As reference measurement, the dose was first measured on standard cylindrical polymethyl methacrylate (PMMA) phantom that positioned at 104 cm from the floor (reference isocenter). The positions then were varied to simulate mis-centering by 5 cm from isocenter, superiorly and inferiorly at 109 cm, 114 cm, 119 cm, 124 cm and 99 cm, 94 cm, 89 cm, 84 cm, respectively. Scanning parameter and dose information from the console were recorded for the radiation effective dose (E) measurement. The highest mean CTDIvol value for MCS and MCI were 105.06 mGy (at +10 cm) and 105.51 mGy (at – 10 cm), respectively which differed significantly ( p < 0.05) as compared to the isocenter. There were large significant different ( p < 0.05) of mean Dose Length Product (DLP) recorded between isocenter to the MCS (85.8 mGy.cm) and MCI (93.1 mGy.cm). As the low dose protocol implemented, the volume CTDI (CTDIvol) were significantly increase ( p < 0.05) for MCS (at +10 cm) and MCI (at – 10 cm) when compared to the isocenter. The phantom study revealed a noticeable different in radiation dose between isocenter and experimental groups due to degradation of the bowtie filter performance. It is anticipated that these noteworthy findings may emphasize the importance of accurate patient centering at the isocenter of CT gantry, so that CT optimization practice can be achieved.
New media, new challenges: exploring the frontiers of corpus linguistics in the linguistics curriculum
Authors: Hernández Nuria
Published: June 2019

This paper introduces a new corpus of computer-mediated communication which is currently being compiled at the University of Duisburg-Essen. Based on the experience from this project, the paper also discusses the possibility of implementing major issues in corpus construction into the academic curriculum of young linguists in the form of project-based learning. A variety of new challenges and possible solutions regarding the compilation and processing of new media language are presented.
Hedging expressions used in academic written feedback: a study on the use of modal verbs
Authors: Lee Kok Yueh
Published: June 2019

This paper sets out to answer a fundamental question: ‘How do tutors hedge their comments using modal verbs?’ A total of 126 feedback reports comprising 35,941 words were collected from two Humanities departments in a UK higher education institution. Although this is a relatively small corpus, it is a specialised corpus. The research focuses on a specific genre – written feedback –, thus the findings should be justifiable in relation to the hedging expressions used in giving feedback through the use of modal verbs. A wordlist search of the nine core modal verbs (can, could, may, might, must, shall, should, will and would) was carried out with WordSmith Tools 5. The results show that could, might and would are the top three modal verbs, followed by can, may, must, should and will, all of which are used as hedging, although some level of certainties are higher than others. Shall was not found in the written feedback, since it is more commonly used in legal texts. The modal verbs could, might and would were used most often because of their lower levels of certainty. Must, should and will indicate the higher certainty level, more direct and less opted for. The concordances for each modal verb were also further examined for their functions. The modal verbs were used to indicate criticism (can, could, may, might, will and would), suggestions (could, may, might and would), possibility (may, might and can) and necessity (must and should). Other functions included permission (can), certainty (will) and advice (would), all of which were of very low frequency. The results show that tutors tend to be more assertive or direct when commenting on mechanical aspects of writing (through must and should) and to use more hedging in criticising or offering suggestions. The findings of this research aim to provide a feedback framework as a reference guide to teacher training programmes.