bluuebunny/crossref_metadata_2025 huggingface dataset:
Third-generation pure alumina and alumina matrix composites in total hip arthroplasty
Authors: Hannouche Didier , Zingg Matthieu , Miozzari Hermes , Nizard Remy , Lübbeke Anne
Published: January 2018

Wear, corrosion and periprosthetic osteolysis are important causes of failure in joint arthroplasty, especially in young patients. Ceramic bearings, developed 40 years ago, are an increasingly popular choice in hip arthroplasty. New manufacturing procedures have increased the strength and reliability of ceramic materials and reduced the risk of complications. In recent decades, ceramics made of pure alumina have continuously improved, resulting in a surgical-grade material that fulfills clinical requirements. Despite the track record of safety and long-term results, third-generation pure alumina ceramics are being replaced in clinical practice by alumina matrix composites, which are composed of alumina and zirconium. In this review, the characteristics of both materials are discussed, and the long-term results with third-generation alumina-on-alumina bearings and the associated complications are compared with those of other available ceramics.

Cite this article: EFORT Open Rev 2018;3:7-14. DOI: 10.1302/2058-5241.3.170034
OS SUBURBIA DE CÓRDOVA
Authors: Vaquerizo Desiderio , Murillo Juan F.
Published: January 2018

Muito para além dos imperativos ideológicos que em cada momento definiram as diferenças jurídicas entre os espaços intramuros e extramuros, a História mostra-nos que Córdova, desde a sua fundação, ultrapassou os estritos limites impostos pelas suas muralhas para configurar uma unidade funcional na qual não se torna possível entender a cidade em sentido estrito sem o seu espaço extra moenia, os seus suburbia: uma realidade em mutação, estabelecida por um primeiro eixo vertebrador constituído pela rede viária. Por sua vez, esta funcionou como a garantia de acesso a uma segunda franja de carácter periurbano (ausente de funções urbanas, mas de acesso fácil e ponto preferencial para a actividade quotidiana dos seus habitantes) e, por fim, para o território dependente, no qual se sustentava a base económica, o poder político e o prestígio da urbe. Os subúrbios funcionaram assim - para o bem e para o mal - como espelhos da mesma.
OSOBENNOSTI POKAZATELEY UL'TRASONOMETRII ZhENSKOGO NASELENIYa GORODA ChELYaBINSKA
Authors: USOL'TsEVA E N , SAFRONOV O V , BRYuKhINA E V
Published: January 2018

Characteristic feature of ultrasonic densitometry have been investigated in women,s population of Chelyabinsk (n=200) from 25 to 65 years old. We used domestically produced Echoosteometr-02. A basis of a body of the lower jaw became a new area for ultrasonic densitometry. We can recommend a lower jaw as a new area for ultrasonic densitometry taking into account high pithiness of data in a combination with simplicity of research. Traditional localizations have been also applied: proximal phalanges of the hand, patella, tibia diaphysis and calcaneus bones of the right and left sides. We have established a "peak" values of a speed of the ultrasound wave for the given bones. Also we have found that a tubular bones and a large spongy bone - a lower jaw - possess the highest speed of an ultrasound wave, and the speed was mach less in a small spongy bones, that is caused by their anatomic structure. Ultrasound densitometry parameters of the peripheral skeleton start to reduce from 40-50 years behind exception patella - from 55 years. The lowest values were in group of women of 60-65 years. The rates of ultrasonic densitometry received by us are possible to use for women population of Chelyabinsk.
OSOBENNOSTI STRUKTURNOY ORGANIZATsIISUSTAVNOGO KhRYaShchA v zavisimosti ot stadii gonartroza
Authors: BORODIN Yu. I. , LYuBARSKIY M. S. , MUSTAFAEV N. R. , BGATOVA N. P.
Published: January 2018

The purpose - revealing of features of the structural organization of the articulate cartilage of a knee joint at patients with various stages of arthrosis.
Materials and methods. Morphological researches of an articulate cartilage are visited at 52 patients with various stages of gonarthrosis. The control group was made by 5 men and 5 women in the age of from 18 till 25 years with traumatic damages of components of a knee joint.
The basic group was made by 42 persons. On a stage of gonarthrosis patients have been divided into 2 subgroups: 23 patients with 1-2 stage and 19 patients with 2-3 stage of gonarthrosis. The histological material for research has been received at performance medical-diagnostic arthroscopies a knee joint.
Results. It is noted, that morphological changes in an articulate cartilage at gonarthrosis are connected with change of density intercellular matrix and, depending on a stage of process, of chondrocyte dystrophy, necrosis and apoptosis are took place. In cytoplasm of chondrocyte there is a decrease in concentration of cytoplasmic organelles, lipids accumulation and electron density inclusions.
Conclusion. The most expressed structural changes in the articulate cartilage, connected with local destruction of chondrocytes, lipids and electron density inclusions accumulation are noted at patients with 2-3 stage of gonarthrosis.
COSTOYaNIE SISTEMY OSTEOPROTEGERIN (OPG) - LIGAND RETsEPTORA-AKTIVATORA YaDERNOGO FAKTORA KAPPA-V (RANKL)u patsientov s diabeticheskoy osteoartropatiey i mediakal'tsinozom arteriy nizhnikh konechnostey
Authors: YaROSLAVTsEVA M. V. , UL'YaNOVA I. N. , GALSTYaN G R , IL'IN A. V. , NIKANKINA L. V. , REMIZOV O. V.
Published: January 2018

That were 107 patients included. 33 patients with acute stage of diabetic osteoarthropathy, 24 patients with chronic stage; 20 patients with severe diabetic neuropathy and medial arterial calcification (MAC) of the low extremity, confirmed X-rays; control group included 30 persons with normal glucose tolerance. Significant increased level of OPG revealed in all groups of patients with diabetes (р
Analysis of epidemiology of osteoporotic fracturesusing data from primary care physicians
Authors: Gladkova E. N. , Khodyrev V. N. , Lesnyak O. M. , Gladkova E. N. , Chodyrev V. N. , Lesnyak O. M.
Published: January 2018

Compared to European countries, the incidence of hip fractures in Russia is significantly lower. The reasons for such a discrepancy have been studied insufficiently. It is known that in Russia, not all patients with hip fracture are hospitalized. The aim of the present study was to obtain the best possible precise data on epidemiology of osteoporotic fractures in older population. 208 cases of hip fractures were revealed during 2008-2009 (52 men and 156 women). 57 (27,4%) of them haven't been registered in official statistics and were consulted only by the primary care physicians. The incidence of hip fracture make up 191,9/100000 person-years (125,4 men and 233,2 women). The official statistics doesn't give the objective information on number of hip fractures, and search for patients treated only in a primary care settings is necessary in order to receive objective information.
Interrelation of bone mineral density with kneeosteoarthrosis
Authors: Zaytseva E. M. , Smirnov A. V. , Alekseeva L. I. , Zaitseva E. M. , Smirnov A. V. , Alekseeva L. I.
Published: January 2018

Association of bone mineral density (BMD) of axial skeleton with age of the disease onset as well as with clinical traits and instrumental investigation findings has been studied in osteoarthritic patients. 116 females with primary knee OA, 74 ofwhich exhibited normal or increased
BMD at lumbar spine and 42, with osteoporosis were included in the study. Knee joint pain was measured using visual analog scale (VAS). All the patients were subjected to X-ray analysis of their knee joints at two sites (OA stage was
determined according to Kellgren-Lawrence scale), densitometry at lumbar spine and proximal femur using QDR-4500W (Hologic), MRT, and ultrasonography of the knee joints.
We determined that the increasedBMD at lumbar spine was associated with early OA onset, more pronounced X-ray changes in the knee joints and higher frequency of varus deformation development in tibial bones.
AWARENESS OF PHYSICIANS OF VARIOUS SPECIALTIES OF OSTEOPOROSIS IN THE MOSCOW REGION
Authors: Marchenkova L. A. , Dreval A. V. , Kryukov I. V.
Published: January 2018

We investigated the awareness of physicians of different specialties in the field of osteoporosis. With the help of a poll, consisting of 34 basic questions on the diagnosis, prevention and treatment of osteoporosis, we tested 503 physicians of 13 different medical specialties from Moscow and Moscow region. According to test results, the median of correct answers in the test was 6 (3, 9), i.e. 18% of the maximum possible score. 50% of respondents answered correctly to questions 5 and less, i.e., <15% of the total number of questions, and in only 19.4% of respondents the number of correct responses exceeded 10, i.e. > 30% of the maximum possible score. We found a negative correlation between age and level of knowledge in physicians № 1/2012 Остеопороз и остеопатии (r=-0, 25; p <0, 001). The highest awareness on the issue of osteoporosis showed endocrinologists — the median of correct answers in the test was 12 (7, 14), rheumatologists — 10 (6.5, 14), neurologists — 10 (3, 13), and cardiologists — 6 (5, 8). and the lowest — obstetricians — 3 (1, 4). The number of correct answers from doctors working in Moscow was significantly higher than that of the doctors working in the Moscow region (median 5 (3, 9). and 9 (5, 12). points, respectively, p <0, 001 — Mann-Whitney U-test). Thus, physicians in the Moscow region revealed a distinct lack of knowledge in the field of osteoporosis.
BONE MINERAL DENSITY AND VASCULAR WALL CHARACTERISTICS IN WOMEN AFTER OVARIECTOMY AND PROLONGED HORMONE THERAPY
Authors: Mitrokhina T V , Yureneva S V , Maychuk E Yu , Kuznetsov S Yu , Voevodina I V , Moiseenko S V
Published: January 2018

Osteoporosis and atherosclerosis are the most socially significant chronic non-infectious diseases. This is due to their high prevalence and medical, social and economic consequences from osteoporotic bone fractures and myocardial infarction and stroke as a result of cardiovascular diseases (CVD). The level of estrogen is essential for the formation and maintenance of bone mass in women. The sharp decline in estrogen levels after bilateral ovariectomy plays the role of trigger factor in the development of complex disorders of the bone and the cardiovascular system. Pathogenetically justified approach to the correction of the estrogen-deficient states is the use of hormone replacement therapy (HRT). To study the effect of HRT on the cardiovascular system and bone mineral density (BMD) we examined 50 women with surgical menopause which received HRT for more than a 10-year period. We studied the anthropometric and biochemical parameters (blood cholesterol and its fractions, fasting blood glucose), performed Doppler ultrasonography of head and neck vessels with measurement of pulse velocity, dual-energy x-ray absorptiometry (DEXA) for BMD estimation. Examination was carried out twice - in the early period after the operation (the first year) and after 10 years. Analysis of the cardio-vascular system and the BMD has demonstrated more severe atherosclerotic vascular changes and a greater decrease in BMD in patients who discontinued use of HRT. The severity of atherosclerosis and the level of the BMD were dependent on HRT use.
MARKERS OF BONE METABOLISM IN LONG BONE’S ADHESION
Authors: Pobel E A , Bengus L M , Dedukh N V
Published: January 2018

This review presents the current evidence about the use of markers of bone metabolism in the prediction of fracture healing, differences in concentrations of blood markers of bone metabolism in patients with normal and delayed consolidation of bone fragments. We analyze the relationship between the fracture site, time-stage features of its healing and urinary macromolecules, reflecting bone metabolism. Increase in bone turnover, which is observed after the fracture, is characterized by activation markers of bone resorption, with a subsequent increase in the concentration of blood markers of bone formation. However, there is a marked variability in data concerning the levels of bone markers in plasma at different stages of fracture healing. We show that in patients with delayed fracture healing there is a significant delay in raising osteocalcin levels. Prognostic features for determining fracture nonunion include low concentrations of N-terminal propeptide of procollagen type I. Determination of markers of bone metabolism in blood can serve as informative criterion for the course of reparative osteogenesis, but one must consider the nature of traumatic injury, time passed from injury, especially the state of bone tissue at the time of injury, age of the patient to identify the early stages of consolidation disturbances.
EFFECT OF BETA-BLOCKERS ON BONE MINERAL DENSITY AND OSTEOPOROTIC FRACTURES
Authors: Sobchenko K E , Skripnikova I A , Abirova E S , Ptichkina P A
Published: January 2018

This review presents the current data on the pleiotropic effects of beta-blockers in particular on the effect on bone mass and fracture development by means of increased bone fragility. In this article we discuss the mechanisms of action of beta-blockers on bone metabolism and their possible protective effect on bone tissue in the treatment of cardiovascular disease.
THE PREVALENCE OF VITAMIN D DEFICIENCY IN THE NORTHWESTERN REGION OF THE RUSSIAN FEDERATION AMONG THE RESIDENTS OF ST. PETERSBURG AND PETROZAVODSK
Authors: Karonova T L , Grinyova E N , NikitiM I L , Tsvetkova E V , Todieva A M , Belyaeva O D , Mikheeva E P , Globa P Yu , Andreeva A T , Beletskaya I S , Omelchuk N V , Fulonova L S , Shlyakhto E V
Published: January 2018

The examination of residents of St. Petersburg and Petrozavodsk revealed a high frequency of vitamin D deficiency and according to the criteria of the International Society of Endocrinology (ENDO, 2011), normal levels of vitamin D sufficiency had only 16.8% of residents of the north-western region of the Russian Federation, while vitamin D insufficiency was seen in 37.5%, and deficit — in 45.7% of patients. When reviewing the results using the criteria proposed by the U.S. Institute of Medicine (IOM, 2011), normal values of 25(OH)D in serum were detected in 49.6% insufficient levels — in 40.0% and deficit — in 10.4%. The decrease ofvitamin D levels was independent of age, but more frequent in women and people who are overweight. Given the lack of national standards for assessing the sufficiency ofvitamin D, as well as the average level of 25(OH)D in the blood serum in the study population, to assess vitamin D status in the northwestern region of Russia is preferable to use the criteria proposed by the U.S. Institute of Medicine in 2011.
PREVALENCE AND RISK FACTORS OF LOW-ENERGY SKELETAL FRACTURES IN PATIENTS WITH CHRONIC INFLAMMATORY DISEASES. THE RESULTS OF A MULTICENTER STUDY OF THE RUSSIAN ASSOCIATION ON OSTEOPOROSIS GLUKOST
Authors: Baranova I A , Ershova O B , Anaev E Kh , Anikhina T N , Anoshenkova O N , Batyn S Z , Belyaeva E A , Bolshakova T Yu , Volkorezov I A , Eliseeva L N , Kashnazarova E V , Kinyaykin M F , Kirpikova M N , Klyuchnikova E P , Korolev M A , Kuneevskaya I V , Masneva L V , Muradyants A A , Otteva E N , Petrachkova T N , Peshekhonova L K , Povzun A S , Raskin T A , Smirnova M L , Toportsova N V , Khasanova R B , Shamsutdinova N G , Shaporova N L , Shitova N S , Shkireeva S Yu , Shostak N A , Lesnyak O M
Published: January 2018

Objectives. This study is a part of GLUKOST study hosted and organized by the Russian Association of Osteoporosis. The aim was to estimate the incidence and risk factors of fractures in patients with chronic inflammatory diseases. Materials and Methods. A specially designed questionnaire was introduced to patients with chronic inflammatory diseases in different regions of Russia. The study included 2342 patients aged 18 to 89 years (mean age 53.02 ± 14.03 years, 591 men and 1181 women). The patients were allocated into two groups: group 1 (n = 1402) - patients never prescribed oral long acting glucocorticoids (OGC); group 2 (n = 929) - patients who received oral long acting glucocorticoids for more than 2 months or continue to take at the time of the survey. The median duration of OGC therapy was 3 years, the median daily dose - 10 mg of prednisone or equivalent. Results. Low-energy fractures of the skeleton were identified in 9.0% of patients not receiving therapy OGC, and 15.5% of patients receiving or previously treated with this therapy. Significant risk factor for fractures was the length of a chronic inflammatory disease. OGC therapy increased the risk (adjusted odds ratio (95% confidence interval (95% CI)) of osteoporotic fractures, regardless of their location by 2.2-fold (95% CI 1.63-3.02, p <0,001), vertebral fractures - by 5.0 - fold (95% CI 2.05-12.37, p <0.001), distal forearm 1.8-fold (95% CI 1.10-2.84, p = 0.02). The frequency of fractures in group 2 was increased in men and women of different age groups, but a significant increase in risk was demonstrated only in postmenopausal women and men 50 years and older. We were unable to identify a relationship of fractures with a daily dose of OGC. Conclusion. The main risk factors for osteoporotic fractures in patients with chronic inflammatory diseases are age, duration of the underlying disease, and long-term use of oral glucocorticoids.
THE ENDOCRINE FUNCTION OF THE BONE TISSUE
Authors: Grebennikova T A , Belaya Zh E , Tsoriev T T , Rozhinskaya L Ya , Melnichenko G A
Published: January 2018

This review discusses the recent evidence showing that the skeleton itself produces at least two hormones: fibroblast growth factor 23 (FGF23) and osteocalcin. FGF23 is secreted by osteocytes in bone and acts on the kidney to inhibit 1-alpha-hydroxilation ofvitamin D and promote phosphorous excretion. The affinity of FGF23 to FGF receptor is low, but FGF23 binds to FGF receptor-Klotho complex with more affinity. Therefore, Klotho determines the kidney-specific action of FGF23. Increase in FGF23 or Klotho levels due to genetic defects or ectopic production results in low serum phosphorous levels in humans. Contrary to this, low FGF23 or Klotho levels lead to hypophosphatemia and ectopic calcification. Mouse genetics studies revealed that osteoblast product, osteocalcin, in its undercarboxylated stage acts on the pancreatic beta-cells to enhance insulin production and on peripheral tissues to increase glucose utilization as a result of increased insulin sensitivity and to reduce visceral fat. In addition to this, undercarboxylated osteocalcin may also have another hormonal role, this time as a mediator of testosterone secretion. Osteocalcin was shown to induce testosterone production in Leydig cells of the testes both in ex vivo and in vivo studies. In both localizations, at the pancreas and at the testes osteocalcin acts through the GPCR6A receptor, this activates the cAMP response element-binding protein signaling pathway. Thus, this review reports the recent studies indicating bone ’s role as an endocrine organ.
ORIGINAL ARTICLES CLINICAL AND PROGNOSTIC SIGNIFICANCE OF MOLECULAR GENETIC FACTORS IN POSTMENOPAUSAL OSTEOPOROSIS
Authors: Yureneva S V , Donnikov A E , Bordakova E V , Yakushevskaya O V , Smetnik A A , Trofimov D Yu
Published: January 2018

Aim. To identify gene polymorphisms (OPG, RANKL, VDR, SOST) and evaluate their relationship with bone mineral density (BMD) and fractures for further optimization of diagnosis and treatment of postmenopausal osteoporosis (PMO). Materials and methods. The study included 236 postmenopausal women living in Moscow and the Moscow region. The main group (I) consisted of 174 patients, aged 50 to 83 years, with BMD < - 2.5 SD for the T-score. The comparison group (II) consisted of 62 postmenopausal women with BMD within the normal range and the lack of previous fractures, aged 50 to 77 years. Molecular genetic analysis of polymorphisms of VDR (rs10735810, rs1544410), RANKL (rs9594738, rs9594759) and OPG (rs3102735, rs3102735 and rs4355801), SOST (rs1230399) was performed by polymerase chain reaction in all subjects with PMO and in the control group. Results. In the presence of the T allele of the gene RANKL (rs9594759 and rs9594738) risk of reduced BMD at L1-L4 was increased by 2 times. Women with genotype C/C gene polymorphism of OPG (rs3102735) the risk of fractures of the distal radius (PR) was increased by 17 times, regardless of BMD. Genotype G/G rs1544410 polymorphism of VDR gene in patients with PMO is associated with an increased risk of fractures of the distal radius by three times. In patients with PMO genotype C/C in gene SOST (rs1230399) only cause differences in body mass index. According to an autosomal recessive pattern, homozygous genotype C/C was significantly associated with obesity in the PMO. Conclusions. Polymorphisms of genes RANKL (rs9594759 and rs9594738), OPG (rs3102735) and VDR (rs1544410) are associated with the risk of fractures and PMO. Gene SOST (rs1230399) had no statistically significant effect on BMD and fracture risk.
Das Atombombenmuseum Hiroshima
Authors: Schäfer Stefanie
Published: January 2018

Bis heute gilt der Atombombenabwurf auf Hiroshima im August 1945 weltweit als Inbegriff der absoluten Zerstörung. Doch wie die Forschung zeigte, ist Hiroshima keinesfalls ein weltweit homogener Erinnerungsort, sondern von nationalen Erinnerungskulturen und Identitäten geprägt. Stefanie Schäfers Geschichte des Friedensgedächtnismuseums Hiroshima arbeitet nun erstmals die Bedeutung lokaler Interessen für die Entstehung des öffentlichen Erinnerns an die Atombombe heraus. Zu Tage tritt ein komplexes Geflecht, welches das Atombombengedenken im Spannungsfeld zwischen Tourismus und Abrüstungsbewegung, zwischen Technikeuphorie und kollektiver Trauer zeigt. Dieser Blickwechsel lädt die Leser_innen ein, auch gängige Deutungsmuster in der Geschichte einer »westlichen« Erinnerungskultur zu hinterfragen.
Hollywood und das Projekt Amerika
Authors: Bronfen Elisabeth
Published: January 2018

Träume und Katastrophen haben das amerikanische Projekt von Anfang an begleitet. Das Kino ist der Ort, wo sie aufgegriffen, verhandelt und neu konzipiert wurden. Die Essays dieses Bandes widmen sich den kulturellen Imaginationen Amerikas als einer Geschichte der Heimsuchungen. Elisabeth Bronfen stellt dazu Crossmapping als ein Verfahren vor, welches Verbindungslinien zwischen Literatur, Film und anderen Medien aufzeigt, etwa das kulturelle Nachleben von Shakespeare und Wagner in Hollywood. Auch analysiert sie die ästhetische Verschränkung von Weiblichkeit und Tod, mit besonderem Fokus auf der Figur der Femme Fatale, und stellt die Praktiken und Strukturen der kinematischen Re-Imagination von Geschichte vor.
Radio-Topologie
Authors: Patka Kiron
Published: January 2018

Radio und Raum: Ein Zusammenhang, der in den letzten Jahrzehnten in Vergessenheit geraten ist, entpuppt sich in Kiron Patkas Studie als historischer und systematischer Ausgangspunkt für die Ästhetik des Radios. Spuren von der Auseinandersetzung mit Raum finden sich überall im Radio. Reportagen, Moderationen und Jingles - anhand etlicher, oft unscheinbarer Beispiele wird deutlich: Radioproduktion ist immer auch Raumproduktion. Und es zeigt sich, dass ein Verständnis von Radioästhetik ohne die Berücksichtigung der Kategorie »Raum« unvollständig bleiben muss. Die innovative Analyse ermöglicht neue Perspektiven für die Radioforschung ebenso wie die -praxis.
Performance of watermelon (Citrullus lanatus L.) in response to organic and NPK fertilizers
Authors: Eifediyi Ehiokhilen Kevin , Remison Samson Uduzei , Ahamefule Henry Emeka , Azeez Kameel Olubukola , Fesobi Phillip Olumide
Published: January 2018

The soil of North-Central Nigeria is home to many plant products that are used as industrial raw materials, and after processing their waste are often left in drainage channels, which ultimately find their way into rivers and streams where they pollute these water bodies, and sometimes some of these materials are burnt, which further aggravates global warming. In addition, the soil of the region is characterized by low organic matter content because of annual bush burnings, which reduce the low humus content of soils. Watermelon requires a fertile soil, which is high in organic matter content, while infertile soils yield an increased production of male flowers at the expense of female flowers, which results in low fruit set. Therefore, a study was carried out at the University of Ilorin Teaching and Research Farm, Ilorin, North-Central Nigeria, during the rainy seasons of 2013 and 2014 to assess the effect of different organic materials on the growth and yield of watermelon. The factors imposed were a control, NPK fertilizer and five organic materials (neem seed cake (NSC), jatropha seed cake (JSC), poultry manure (PM), compost manure (CM), and cow dung (CD)). The experiment was a randomized complete block design (RCBD) replicated thrice. Data collected on soil physico-chemical properties were: organic matter content, soil pH, organic carbon, total N, P, K, Ca, and Mg, bulk density (BD), micro porosity (MIP), macro porosity (MAP), and saturated hydraulic conductivity (KS). Plant parameters evaluated include growth (vine length and number of leaves) and yield (number of fruits per plant, fruit weight per plant, and yield ha−1). Results indicated that the organic matter content increased after the first year’s cropping and declined at the end of the study. The amended plots showed significantly higher values (P < 0.05) with respect to most soil physical properties (MIP), (MAP), and (KS), except the BD, where the values were lower. The bulk density particularly deteriorated on soils that were not organically amended. In addition, the soil chemical properties examined increased following the first year’s cropping, and thereafter declined at the end of the second-year cropping season. The response of watermelon showed that the two years’ yield data ranged between 334 and 402 t/ha, 306 and 390 t/ha, and 38.25 and 59.20 t/ha for NPK, poultry manure, and control treatments respectively. From the results, it was observed that the organic amendments were environmentally more friendly compared to the inorganic amendment (NPK fertilizer) in terms of positive effects on soil structural properties.
Investigation of thysanoptera populations in Hungarian greenhouses
Authors: Orosz Szilvia , Éliás Dávid , Balog Emese , Tóth Ferenc
Published: January 2018

Studies were performed on sweet pepper and on weeds in their surroundings from 2005 to 2007 in the Jászság region, on different vegetables and ornamentals from 2015 to 2016 throughout Hungary, and on some indoor ornamental plants in Budapest and Kecskemét in 2017. These studies were carried out in greenhouses. The main objectives of this work was to clarify the consistency of Thysanoptera populations in these greenhouses and, secondly, as part of the official monitoring of Thrips palmi Karny and Thrips setosus Moulton, the study also focused on the first appearance of these pests in Hungary. An important additional aim was to determine which reservoirs were significant in the risk of Thysanoptera species transmitting tomato spotted wilt virus (TSWV). Regarding the surveys conducted, the most frequent Thysanoptera species present in large numbers during the investigation period in every greenhouse was Frankliniella occidentalis Pergande. Also, a significant amount of Echinothrips americanus Morgan was found on ornamentals in southern Hungary, whereas on indoor ornamental plants only Hercinothrips femoralis O. M. Reuter was found.
Synthesis, characterization, thermal degradation and urease inhibitory studies of the new hydrazide based Schiff base ligand 2-(2-hydroxyphenyl)-3-{[(E)-(2-hydroxyphenyl)methylidene]amino}-2,3-dihydroquinazolin-4(1H)-one
Authors: Ikram Muhammad , Rehman Sadia , Subhan Fazle , Akhtar Muhammad Nadeem , Sinnokrot Mutasem Omar
Published: January 2018

The novel Schiff base ligand 2-(2-hydroxyphenyl)-3-{[(E)-(2-hydroxyphenyl)methylidene]amino}-2,3-dihydroquinazolin-4(1H)-one(H-HHAQ)derived from 2-aminobenzhydrazide was synthesized and characterized by elemental analyses, ES+-MS,1H and13C{1H}-NMR, and IR studies. The characterization of the ligand was further confirmed by single crystal analysis. The Schiff base ligand was complexed with metal ions like Co(II), Ni(II), Cu(II) and Zn(II) to obtain the bis-octahedral complexes. The ligand and its metal complexes were also studied for their urease inhibitory activities. All the tested compounds show medium to moderate activities for the enzyme, whereas the copper based complex was found to be much more active against urease with an IC50=0.3 ± 0.1 μM±SEM, which is even more potent than the standard thiourea. The IC50of the cobalt complex was 43.4±1.2 μM±SEM, whereas that of the nickel complex was 294.2±5.0 μM±SEM. The ligandH-HHAQand the zinc complex were inactive against the tested enzyme.
Oscillation and Periodicity of a Second Order Impulsive Delay Differential Equation with a Piecewise Constant Argument
Authors: Oztepe Gizem S. , Karakoc Fatma , Bereketoglu Huseyin
Published: January 2018

This paper concerns with the existence of the solutions of a second order impulsive delay differential equation with a piecewise constant argument. Moreover, oscillation, nonoscillation and periodicity of the solutions are investigated.
Biodiversity indexes in relation to soil properties in upland fir forests (Abietetum albae)
Authors: Lasota Jarosław , Wiecheć Małgorzata , Błońska Ewa , Brożek Stanisław
Published: January 2018

The aim of this study was to present the relationship between soil properties and biodiversity indexes in upland fir (Abies alba) forest associations (Abietetum albae). Our study was conducted in six areas representing the growth conditions of upland fir forests and the research plots were located in the Roztoczański and Świętokrzyski National Parks as well as Przedbórz, Radomsko, Piotrków and Janów lubelski Forest District. on every plot, the topography was described, soil cores were examined and samples for laboratory analysis were taken. the following characteristics were determined for the soil samples: ph, c, n, ca, Mg, na and K content, particle size, exchangeable acidity, aluminum content and hydrolytic acidity. additionally, enzyme activity in the soil samples (urease and dehydrogenase) was measured. in each test area, the stand characteristics were measured (diameter at breast height and height), floristic characteristics were described and the biodiversity indexes (Shannon, Simpson and Margalef indexes) were calculated. Different soil types (gleysols, Brunic arenosols, gleyic Podzols and hyperdistric cambisols) were recorded for the investigated forest stands and the soils were categorized according to soil texture, c content, enzyme activity and different humus types (moder-mor, moder, moder-mull). the upland mixed coniferous forest sites were characterized by lower biodiversity indexes (2.6 shannon index; 0.72 simpson index; 4.9 Margalef index) while the upland mixed broadleaf forest sites showed higher indexes (3.3 Shannon index; 0.87 Simpson index; 9.4 Margalef index). The site index obtained for the fir stands confirmed these results.
Microencapsulation of Bioactive Compounds from Hibiscus Calyces Using Different Encapsulating Materials
Authors: Piovesana Alessandra , Noreña Caciano Pelayo Zapata
Published: January 2018

Hibiscus calyces extract was microencapsulated by freeze drying and spray drying using partially hydrolyzed guar gum (PHGG), polydextrose (PD) or gum Arabic (GA) at 10 % as encapsulating agents. The retention of anthocyanins ranged from 59.8 to 64.6 % and from 66.4 to 74.3 %, and for antioxidant activity from 66.54 to 71.71 and 69.90 to 73.26 %, for spray-dried and for freeze-dried powders, respectively. The best result obtained, for the anthocyanins content, reducing capacity and ABTS, was for the powder produced by freeze drying using GA. Regarding physical powder properties, samples produced by spray drying using GA, followed by PHGG had the best results, with values of 95.80 and 95.20 %, 31.33 and 28.87 %, 17.43 and 10.96°C for solubility, hygroscopicity and Tg, respectively. Microscopy analysis also indicated that powders produced by spray drying using GA and PHGG had the best structures, showing particles of spherical shape and without agglomeration.
Influence of Freezing–Thawing Cycle on Water Dynamics of Turbot Flesh Assessed by Low-Field Nuclear Magnetic Resonance and Magnetic Resonance Imaging
Authors: Li Jiaqi , Xia Kexin , Li Yao , Tan Mingqian
Published: January 2018

Turbot is a valuable commercial species due to its high nutrient content. Moisture is an important indicator of meat spoilage. This study elucidated distinctive water dynamics in turbot flesh in the freezing–thawing process by nondestructive low-field nuclear magnetic resonance (LF-NMR) and magnetic resonance imaging (MRI) techniques. T
2 relaxation spectra were utilized to describe the mobility and content of different types of water. Principal component analysis (PCA) revealed a clear discrimination of various freezing–thawing cycles. T
1- and T
2-weighted MRI provided further visualization of internal information for turbot flesh. Microscopic examination clearly identified protein denaturation and structural shrinkage. Furthermore, NMR parameters and conventional physicochemical parameters of color, shear force and thiobarbituric acid-reactive substances showed good correlations. To sum up, the study revealed that LF-NMR and MRI are promising techniques to portray the relationship between the water dynamics and changes of turbot quality properties during the freezing–thawing process.
Numerical Solutions for Radiative Heat Transfer in Ferrofluid Flow due to a Rotating Disk: Tiwari and Das Model
Authors: Mustafa M. , Khan Junaid Ahmad , Hayat T. , Alsaedi A.
Published: January 2018

In this paper, we explore the von-Kármán infinite disk problem for the situation where ferrofluid resides in the space above the rotating disk. Furthermore, flow field is influenced by axial magnetic field. In this study, we treat water as the base fluid which consists of homogeneous suspensions of

F

e

3

O

4

${\rm{F}}{{\rm{e}}_{\rm{3}}}{{\rm{O}}_{\rm{4}}}$

ferromagnetic particles. The main motivation here is to resolve heat transfer problem in the existence of non-linear radiative heat transfer. With the aid of von-Kármán relations, the equations of fluid motion and heat transfer are changed into a set of self-similar differential equations. These equations are dealt by an implicit finite-difference method with high precision. The results reveal that wall heat transfer rate can be improved by increasing solid volume fraction of ferromagnetic particles. Drag coefficient at the disk and heat transfer rate are increased as the strength of Lorentz force is enhanced. Viscous dissipation effect has an important part in improving heart transfer process which is vital in some applications. The results demonstrate that cooling capability of magnetite–water nanofluid is much superior to the conventional coolants. An excellent correlation of present results with the previous published articles is found in the all the cases.
Impact of AC Current Density on Material Corrosion of Distribution Pipelines
Authors: Poberezhny L. , Maruschak P. , Hrytsanchuk A. , Mischuk B. , Draganovska D. , Poberezhna L.
Published: January 2018

Vliv střídavého indukovaného proudu na korozní rychlost oceli St3 a 17GS byl pozorován v simulovaných půdních elektrolytech typických pro Ukrajinu. Ocel St3 je citlivější na přirozené korozní napadení v půdě i na napadení vyvolané střídavým proudem. Byla stanovena nejhorší prostředí z hlediska koroze v elektrolytech obsahujících chloridy či směs chloridů se sírany.
Transnational experiences, language competences and worldviews: contrasting language policies in two recently migrated Greek families in Luxembourg
Authors: Kirsch Claudine , Gogonas Nikolaos
Published: January 2018

Against the backdrop of the ongoing crisis-led migration from Southern to Northwestern Europe, the present paper reports on a case study of two families who have recently migrated from Greece to Luxembourg. Luxembourg has a trilingual education system and many pupils of migrant background face difficulties on this account. Drawing on the framework of Family Language Policy, this paper explores the language ideologies and management strategies of two families as well as factors influencing their policies. This qualitative study was based on interviews, observations, and videos recorded by one of the families. The findings show that the families have contrasting language ideologies and management strategies that are informed by their differing transnational experiences, competences and worldviews. This study can contribute to a better understanding of the ways in which migrant families use their language resources in their new country.
Analytical modeling of coupled flow and geomechanics for vertical fractured well in tight gas reservoirs
Authors: Wang Ruifei , Gao Xuhua , Song Hongqing , Shang Xinchun
Published: January 2018

The mathematical model of coupled flow and geomechanics for a vertical fractured well in tight gas reservoirs was established. The analytical modeling of unidirectional flow and radial flow was achieved by Laplace transforms and integral transforms. The results show that uncoupled flow would lead to an overestimate in performance of a vertical fractured well, especially in the later stage. The production rate decreases with elastic modulus because porosity and permeability decrease accordingly. Drawdown pressure should be optimized to lower the impact of coupled flow and geomechanics as a result of permeability decreasing. Production rate increases with fracture half-length significantly in the initial stage and becomes stable gradually. This study could provide a theoretical basis for effective development of tight gas reservoirs.
Comparison of the fractional power motor with cores made of various magnetic materials
Authors: Gmyrek Zbigniew , Lefik Marcin , Cavagnino Andrea , Ferraris Luca
Published: January 2018

The optimization of the motor cores, coupled with new core shapes as well as powering the motor at high frequency are the primary reasons for the use of new materials. The utilization of new materials, like SMC (soft magnetic composite), reduce the core loss and/or provide quasi-isotropic core’s properties in any magnetization direction. Moreover, the use of SMC materials allows for avoiding degradation of the material portions, resulting from punching process, thereby preventing the deterioration of operating parameters of the motor. The authors examine the impact of technological parameters on the properties of a new type of SMC material and analyze the possibility of its use as the core of the fractional power motor. The result of the work is an indication of the shape of the rotor core made of a new SMC material to achieve operational parameters similar to those that have a motor with a core made of laminations.
Detection of inter-turn short-circuit at start-up of induction machine based on torque analysis
Authors: Pietrowski Wojciech , Górny Konrad
Published: January 2018

Recently, interest in new diagnostics methods in a field of induction machines was observed. Research presented in the paper shows the diagnostics of induction machine based on torque pulsation, under inter-turn short-circuit, during start-up of a machine. In the paper three numerical techniques were used: finite element analysis, signal analysis and artificial neural networks (ANN). The elaborated numerical model of faulty machine consists of field, circuit and motion equations. Voltage excited supply allowed to determine the torque waveform during start-up. The inter-turn short-circuit was treated as a galvanic connection between two points of the stator winding. The waveforms were calculated for different amounts of shorted-turns from 0 to 55. Due to the non-stationary waveforms a wavelet packet decomposition was used to perform an analysis of the torque. The obtained results of analysis were used as input vector for ANN. The response of the neural network was the number of shorted-turns in the stator winding. Special attention was paid to compare response of general regression neural network (GRNN) and multi-layer perceptron neural network (MLP). Based on the results of the research, the efficiency of the developed algorithm can be inferred.
Hybrid excited claw pole generator with skewed and non-skewed permanent magnets
Authors: Wardach Marcin
Published: January 2018

This article contains simulation results of the Hybrid Excited Claw Pole Generator with skewed and non-skewed permanent magnets on rotor. The experimental machine has claw poles on two rotor sections, between which an excitation control coil is located. The novelty of this machine is existence of non-skewed permanent magnets on claws of one part of the rotor and skewed permanent magnets on the second one. The paper presents the construction of the machine and analysis of the influence of the PM skewing on the cogging torque and back-emf. Simulation studies enabled the determination of the cogging torque and the back-emf rms for both: the strengthening and the weakening of magnetic field. The influence of the magnets skewing on the cogging torque and the back-emf rms have also been analyzed.
Can museums and luxury brands’ perceptions be compared? How a survey and semiotics help decipher the French collective psyche, relative to cultural and commercial identities
Authors: de Kerret Gwenaelle
Published: January 2018

Museums and luxury brands are today getting more and more involved with each other, in their communications as in their activities. While brands are looking for a cultural recognition, museums need additional sources of funding and program events and exhibitions related to fashion creators. Obviously, luxury brands and museums share common values, as they belong to cultural identity. But to what extent can their collective psyche be compared? Are there common structures of imagery between brands and museums? These questions have been explored in research conducted in France. Combining semiotics with a quantitative method, it casts a new light on the question of social identities and their impact on the public. It reveals that brands and museums both present an embedded architecture of imagery, in which specific visual signs stand as metonymic embodiment. It also questions the notion of myth, as universal and archaic symbols appear to lay in both cultural and commercial representations.
Regularities of Oxidative Stress Course in Cerebral Stroke
Authors: Silina Ekaterina Vladimirovna , Rumyantseva Sofia Alekseevna , Stupin Victor Aleksandrovich , Afanasiev Vasily Vladimirovich , Menshova Natalia Ivanovna , Bolevich Sergej Brankovich
Published: January 2018

Objective of the article: to improve diagnosis and treatment results of patients with ischaemic and haemorrhagic strokes by means of a comprehensive in-depth review of free radical processes and the defining of patterns of their course under the conditions of stroke. During the study, the authors established the regularities for the course of free radical processes in stroke with the development of oxidative stress and the severity of peroxidelipid component, which increases in proportion to the severity of ischaemic or haemorrhagic stroke with maximum intensity in cases of adverse outcomes. Multi-stage mathematical modelling allowed for the determination of a highly effective formula for early stroke prognosis, which includes only 5 indicators used for estimation at hospitalization: consciousness level, blood glucose level, number of leukocytes in venous blood, antiperoxide activity of plasma and malondialdehyde. It was found that each of these parameters is an independent marker of hospital mortality. The consideration of all these indicators makes it possible to carry out early prognostic diagnostics with 90% probability and to timely correct treatment. We have also established digital boundaries, which are indications for the administration of energy correct therapy, the proper implementation of which has significantly improved the results of hospital treatment.
Peculiarities of hydration of Portland cement with synthetic nano-silica
Authors: Kotsay Galyna
Published: January 2018

Application of nano-materials in cement products significantly, improves their properties. Of course, the effectiveness of the materials depends on their quantity and the way they are introduced into the system. So far, amongst nano-materials used in construction, the most preferred was nano-silica. This research investigated the effect of synthetic precipitated nano-silica on the cement hydration as well as, on the physical and mechanical properties of pastes and mortars. Obtained results showed that admixture of nano-silica enhanced flexural and compressive strength of cement after 2 and 28 days, however, only when admixture made up 0.5% and 1.0%. On the other hand, the use of nano-silica in the amount 2% had some limitations, due to its ability to agglomerate, which resulted in deterioration of the rheological and mechanical properties.
Design of rapid hardening engineered cementitious composites for sustainable construction
Authors: Marushchak Uliana , Sanytsky Myroslav , Sydor Nazar
Published: January 2018

This paper deals with design of environmentally friendly Rapid Hardening Engineered Cementitious Composite (RHECC) nanomodified with ultrafine mineral additives, polycarboxylate ether based superplasticizer, calcium hydrosilicate nanoparticles and dispersal reinforced by fibers. The incremental coefficient of surface activity was proposed in order to estimation of ultrafine supplementary materials (fly ash, methakaolin, microsilica) efficiency. A characterization of RHECC’s compressive and flexural properties at different ages is reported in this paper. Early compressive strength of ECC is 45-50 MPa, standard strength – 84-95 MPa and parameter Rc2/Rc28 – 65–70%. The microstructure of the cement matrix and RHECC was investigated. The use of ultrafine mineral supplementary materials provides reinforcement of structure on micro- and nanoscale level (cementing matrix) due to formation of sub-microreinforcing hydrate phase as AFt- and C-S-H phases in unclinker part of cement matrix, resulting in the phenomena of “self-reinforcement” on the microstructure level. Designed RHECC may be regarded as lower brittle since the crack resistance coefficient is higher comparison to conventional fine grain concrete.
BIM integration in education: A case study of the construction technology project Bolt Tower Dolni Vitkovice
Authors: Venkrbec Vaclav , Bittnerova Lucie
Published: January 2018

Building information modeling (BIM) can support effectiveness during many activities in the AEC industry. even when processing a construction-technological project. This paper presents an approach how to use building information model in higher education, especially during the work on diploma thesis and it supervision. Diploma thesis is project based work, which aims to compile a construction-technological project for a selected construction. The paper describes the use of input data, working with them and compares this process with standard input data such as printed design documentation. The effectiveness of using the building information model as a input data for construction-technological project is described in the conclusion.