bluuebunny/crossref_metadata_2025_split huggingface dataset:
Microstructural Aspects of Bifocal Laser Welding of Trip Steels
Authors: Grajcar A. , Grzegorczyk B. , Różański M. , Stano S. , Morawiec M. 
Published: July 2017

AbstractThis work is concerned with comparative tests involving single-spot and twin-spot laser welding of thermomechanically rolled TRIP steel. The welding tests were carried out using keyhole welding and a solid state laser. In the case of twin-spot laser beam welding, the power distribution of beams was 50%:50%. The changes in macro- and microstructures were investigated using light and scanning electron microscopy. Three main zones subjected to the tests included the fusion zone, the heat affected zone and the intercritical heat affected zone (transition zone between the base material and the HAZ). Special attention was paid to the effect of various thermal cycles on the microstructure of each zone and on martensite morphology. The tests involved hardness measurements carried out in order to investigate the effect of different microstructures on mechanical properties of welds.
Studies on the Corrosion Resistance of Laser-Welded Inconel 600 and Inconel 625 Nickel-Based Superalloys
Authors: Łyczkowska K. , Michalska J. 
Published: July 2017

Abstract
The paper presents the results of the electrochemical corrosion tests of Inconel 600 and Inconel 625 laser-welded superalloys. The studies were conducted in order to assess the resistance to general and pitting corrosion in 3.5% NaCl solution. It was found that Inconel 600 possesses good corrosion resistance, however Inconel 625 is characterized by a greater resistance to general and also to pitting corrosion of the weld as well as the base metal.
Investigation of La3+ Doping Effect on Piezoelectric Coefficients of BLT Ceramics
Authors: Wodecka-Dus B. , Kozielski L. , Erhart J. , Pawełczyk M. , Radoszewska D. , Adamczyk M. , Bochenek D. 
Published: July 2017

AbstractEffects of La3+admixture in barium lanthanum titanate (BLT) ceramics system with colossal permittivity on performance of prospective piezoelectric cold plasma application were studied. Usage of cold atmospheric pressure plasma appears promising in terms of industrial and healthcare applications. Performed investigation provide consistent evaluation of doping lanthanum amount on piezoelectric coefficients values with simultaneous capability of charge accumulation for effective plasma generation. Modification of ferroelectric materials with heterovalent ions, however with the lower radii than the original atoms, significantly affects their domain mobility and consequently electromechanical properties. To determine the piezoelectric coefficients, the resonance-antiresonance method was implemented, and values of piezoelectric and dielectric parameters were recorded. Finally the results indicated that addition of 0.4 mol.% of La3+ions to the ceramic structure maximally increased the values of piezoelectric coefficient tod33= 20 pC/N and to huge dielectric constant toε33T= 29277.
Decoring Behaviour of Chosen Moulding Materials with Alkali Silicate Based Inorganic Binders
Authors: Conev M. , Vasková I. , Hrubovčáková M. , Hajdúch P. 
Published: July 2017

Abstract
This paper contains basic information about new processes for cores for cylinder heads production with alkali silicate based inorganic binders. Inorganic binders are coming back to the foreground due to their ecologically friendly nature and new technologies for cores production and new binder systems were developed. Basically these binder systems are modified alkali silicates and therefore they carry some well-known unfavourable properties with their usage. To compensate these disadvantages, the binder systems are working with additives which are most often in powder form and are added in the moulding material. This paper deals with decoring behaviour of different moulding sands as well as the influence of chosen additives on knock-out properties in laboratory terms. For this purpose, specific methods of specimen production are described. Developed methods are then used to compare decoring behaviour of chosen sands and binder systems.
Characterization of Cu and Ni Nano-Fluids Synthesized by Pulsed Wire Evaporation Method
Authors: Kim Hyo-Seob , Yilmaz Fikret , Dharmaiah Peyala , Lee Dong-Jin , Lee Tae-Haeng , Hong Soon-Jik 
Published: July 2017

AbstractIn the present work, Cu and Ni nanofluids were synthesized using the pulsed wire evaporation (PWE) method in the different aqueous medias, namely (ethanol and ethylene glycol), and the effects of the aqueous media on the dispersion state, stability, and particle size of nanoparticles were studied. The size and morphology of synthesized nano-particles were investigated by transmission electron microscopy (TEM). Also, the dispersion stability of the nanofluids was evaluated by turbiscan analysis. The TEM results showed that the nano-particles were spherical in shape, and the average particle size was below 100 nm. The average particle size of the Cu nano-particles was smaller than that of Ni, which was attributed to a difference in the specific sublimation energy of the elements. Moreover, ethylene glycol (EG) exhibited higher suspension stability than ethanol. Finally, the dispersion stability of Cu@EG displayed the highest value due to lower particle size and greater viscosity.
Advances in Powder Metallurgy Soft Magnetic Composite Materials
Authors: Bureš R. , Strečková M. , Fáberová M. , Kollár P. , Füzer J. 
Published: July 2017

Abstract
Powder metallurgy has grown with the expansion of various industry. Automotive industry had the most strong influence. Today, more than 90% of PM products are used in the transportation industry. Development of new materials such as magnetic materials is expected to meet the new trends of automotive industry, electric and hybrid vehicles.
Soft magnetic composites (SMC) are PM materials based on ferromagnetic powder particles covered by electric insulation layer. Concept of SMC’s and PM technologies offer possibility to become faster, use higher frequencies, become smaller and denser, save more energy, achieving high permeability and lower core loss in high frequency region, which is required for soft magnetic materials. Investigation of correlations among compaction parameters, inner structure, magnetic and mechanical properties are presented.
Combining morphology, scanning electron microscopy, and molecular phylogeny to evaluate the taxonomic power of scales in genusAphaniusNardo, 1827 (Teleostei: Cyprinodontidae)
Authors: Teimori Azad , Motamedi Mina , Golmakan Mahbubeh Shaker 
Published: July 2017

AbstractScale morphology and its structural details were studied with morphometry, geometric morphometrics, and scanning electron microscopy in five IranianAphaniusspecies and examined comparatively with molecular phylogeny. Scales were cycloid and circular inA. farsicusTeimori, Esmaeili & Reichenbacher andA. vladykoviCoad, cycloid and polygonal inA. isfahanensisHrbek, Keivany & Coad andA. sophiae(Heckel), and were spined and polygonal inA. disparRüppell. Univariate analysis indicated that the relative length of anterior margin of radii played a significant role in the separation of some species studied (P < 0.05). Canonical Variates Analysis (CVA) based on seven landmarks showed clear separation between the Iranian inland and inland-relatedAphaniusspecies (IIRAS) group (four species) and the brackish water species (A. dispar). The lepidonts were conical in the IIRAS group with the exception ofA. isfahanensis(rounded) and were rounded inA. dispar. Based on the basal position of the brackish waterAphaniusspecies in the phylogenetic trees of the genusAphanius,it can be assumed that the presence of rounded lepidonts was a primary state in their scales or is the result of convergent evolution. Also, the polygonal state in the scales ofAphaniusspecies was a primitive shared character state.
Consecutive repetition of lordosis-kyphosis in silverside Atherina boyeri Risso, 1810 collected from a wild population in Homa Lagoon, Izmir, Turkey
Authors: Jawad Laith , Akyol Okan , Saǧlam Cemil 
Published: July 2017

Abstract
The incidence of severe consecutive repetition of lordosis-kyphosis involving three flexions was reported in a specimen of the atherinid fish Atherina boyeri Risso. The values for the angles lay between the lines passing through the sides of the vertebral column and enclosing the curvatures, and the depth of the curvatures of the angles was obtained. Also, the ratio of the vertebral column to the fish total length of deformed and normal specimens of this species was calculated. Possible causes for these anomalies are discussed.
Allium cepa root meristem cells under osmotic (sorbitol) and salt (NaCl) stress in vitro
Authors: Kiełkowska Agnieszka 
Published: July 2017

AbstractThe effects of various concentrations of sorbitol (100, 200 and 360 mM) and NaCl (100, 200 and 300 mM) on root meristem cells ofin vitro-culturedAllium cepaL. were analyzed after 10 and 20 days. Both root meristem cell cross-section area and nuclear volume decreased under osmotic and salt stress. The osmotic component of applied stresses had a greater impact on cell shrinkage, while ionic stress perturbed cell functioning, resulting in cell cycle arrest and various aberrations, affecting nucleus integrity. A concentration of 300 mM of NaCl in the culture medium caused complete inhibition of mitotic activity in onion root tip cells after 20 days of exposure. Analysis of the action of iso-osmotic concentrations of NaCl (200 mM) and sorbitol (360 mM) showed stronger mitodepressive effects of salt stress in comparison to osmotic stress.
Relationships Between Creativity and its Antecedents Before and After Training: The Role of Risk-Taking and Past Creative Experience
Authors: Perry Anna , Karpova Elena 
Published: July 2017

AbstractThis research examined the effects of past creative experience and attitude toward risk-taking on creativity before and after training. College students enrolled in a creativity course participated in the study. Creativity was assessed by independent experts and self-assessed by the participants. Based on the results, an inverted U-shape relationship was proposed between (a) past creative experience and risk-taking, and (b) risk-taking and self-assessed creativity. Risk-taking was related to self-assessed creativity before and after the training, but not expert-assessed creativity. Past creative experience was not related to creativity, self and expert-assessed, before and after the training.
Procrastination is Detrimental to Undergraduate Students’ Self-Rated Creativity: The Mediating Role of State Anxiety
Authors: Lim Jia-Wei , Phang Joo-Yee , Low Mei-Yan , Tan Chee-Seng 
Published: July 2017

Abstract
Procrastination has been found to negatively impact academic and job performance. However, little attention has been given to the effect of procrastination on creative performance. Moreover, past studies have mainly focused on the antecedent role of anxiety in procrastination. The impact of procrastination on anxiety is not clear, though literature has suggested that procrastination may induce anxiety. The primary question addressed in the present study is whether and how procrastination influences creativity. Some exceptional studies have indicated that procrastination allows incubation and hence is conducive to creativity. However, on the basis of the literature, we argued and hypothesized that procrastination may impair creativity through state anxiety. A total of 218 Malaysian undergraduate students were recruited via social networking sites and responded to a packet of online survey questionairres, including self-report of procrastination tendency, state and trait anxiety, and creativity. Results showed that procrastination was positively associated with state and trait anxiety and negatively correlated with creativity. A negative relationship was also observed between state and trait anxiety and creativity. In addition, mediation analysis supported our hypothesis that state anxiety mediates the relationship between procrastination and creativity after controlling for the effect of trait anxiety. Specifically, people tend to experience feeling anxious when they postpone task completion. The high level of anxiety, in turn, is negatively associated with creative performance. As a whole, the findings not only offer the first empirical evidence supportive of the detrimental effect of procrastination on creativity, but also reveal the underlying process. Future directions and limitations are also explored.
Alien taxa of the tribe Senecioneae (Asteraceae) in Italy: a nomenclatural synopsis
Authors: Iamonico Duilio 
Published: July 2017

Abstract
A nomenclatural synopsis of the alien species belonging to the tribe Senecioneae currently recorded in Italy (8 species) is presented. The occurrence at the regional level, as well as the level of naturalization and ecological notes for each taxon are provided. A diagnostic key of the non-native Italian species is also given. The names Cineraria petasitis (now Senecio petasitis), Delairea odorata, Eupatorium auriculatum (now Senecio deltoideus), E. fulvum, Mikania ternifolia var. senecioides, Senecio andryaloides, S. angulatus, and S. leucanthemifolius subsp. vernalis are typified on specimens preserved at E, F, P, SBT, and UPS, and on images by Lamarck, Lemaire, Sims, and Waldstein & Kitaibel. The type of the name S. pterophorus, as indicated by Iamonico in 2015, was wrongly reported as holotype and need to be corrected to lectotype according to the Art. 9.9 of ICN. The names Cacalia auriculata, Cacalia fimbrillifera (nom. nov., nom. superfl. et illeg. pro Eupatorium auriculatum), Cacalia scandens by Thunberg, Cineraria crassiflora, Eupatorium scandens by Link (nom. illeg.), Mikania senecioides (nom. illeg.), Senecio auriculatum, and Senecio mikanioides are also investigated and discussed.
Sorptive properties of modified maize starch as indicators of their quality
Authors: Ocieczek Aneta , Skotnicka Magdalena , Baranowska Kinga 
Published: July 2017

AbstractThe physical and adsorptive properties of three products of modified maize starch in terms of the susceptibility of starch granules to surface processes as affected by their physicochemical diversity was compared in this study, using five mathematical models. It was assumed that modification of native starch is an important factor affecting its adsorptive properties. The products under study differed significantly in terms of the distribution of the size and shape parameters of their granules. The Guggenheim, Anderson and de Boer equation, characterised by relatively low sums of square deviations and low and similar errors of their different parameters, was the most useful in the description of empirically determined isotherms of adsorption. Parameters of the Guggenheim, Anderson and de Boer equation were used to estimate the parameters of the product surface microstructure. Modification of native maize starch differentiated the size of the monolayer, specific surface of sorption, and characteristics of capillaries.
Natural history of autoimmune primary ovarian insufficiency in patients with Addison’s disease: from normal ovarian function to overt ovarian dysfunction
Authors: De Bellis Annamaria , Bellastella Giuseppe , Falorni Alberto , Aitella Ernesto , Barrasso Mariluce , Maiorino Maria Ida , Bizzarro Elio , Bellastella Antonio , Giugliano Dario , Esposito Katherine , _ _ 
Published: July 2017

ContextWomen with autoimmune Addison’s disease with normal ovulatory cycles but positive for steroid cell antibodies (StCA) have been considered at risk of premature ovarian insufficiency (POI).DesignThirty-three women younger than 40 years, with subclinical-clinical autoimmune Addison’s disease but with normally ovulatory menses, were followed up for 10 years to evaluate the long-term time-related variations of StCA, ovarian function and follicular reserve. All patients and 27 control women were investigated at the start and every year for the presence and titre of StCA (by indirect immunofluorescence), serum concentrations of anti-Mullerian hormone (AMH) and ovarian function at four consecutive menses every year.ResultsAt the start of the study StCA were present in 16 women (group 1), at low/middle titres (≤1:32) in seven of them (43.8%, group 1A), at high titres (>1:32) in the remaining nine patients (group 1B, 56.2%), while they were absent from 17 patients (group 2). During the follow-up period, all women in group 1A remained StCA-positive at low/middle titres with normal ovulatory menses and normal gonadotrophin and AMH levels, while all patients in group 1B showed a further increase of StCA titres (1:128–1:256) and progressed through three stages of ovarian function. None of the patients in group 2 and controls showed the appearance of StCA or ovarian dysfunction during the follow-up.ConclusionsThe presence of StCA at high titres can be considered a good predictive marker of subsequent development of autoimmune POI. To single out the stages of autoimmune POI may allow a timely therapeutic choice in the subclinical and early clinical stages.
Androgen-responsive non-coding small RNAs extend the potential of HCG stimulation to act as a bioassay of androgen sufficiency
Authors: Rodie M E , Mudaliar M A V , Herzyk P , McMillan M , Boroujerdi M , Chudleigh S , Tobias E S , Ahmed S F 
Published: July 2017

BackgroundIt is unclear whether a short-term change in circulating androgens is associated with changes in the transcriptome of the peripheral blood mononuclear cells (PBMC).Aims and methodsTo explore the effect of hCG stimulation on the PBMC transcriptome, 12 boys with a median age (range) of 0.7 years (0.3, 11.2) who received intramuscular hCG 1500u on 3 consecutive days as part of their investigations underwent transcriptomic array analysis on RNA extracted from peripheral blood mononuclear cells before and after hCG stimulation.ResultsMedian pre- and post-hCG testosterone for the overall group was 0.7 nmol/L (<0.5, 6) and 7.9 nmol/L (<0.5, 31.5), respectively. Of the 12 boys, 3 (25%) did not respond to hCG stimulation with a pre and post median serum testosterone of <0.5 nmol/L and <0.5 nmol/L, respectively. When corrected for gene expression changes in the non-responders to exclude hCG effects, all 9 of the hCG responders consistently demonstrated a 20% or greater increase in the expression ofpiR-37153andpiR-39248, non-coding PIWI-interacting RNAs (piRNAs). In addition, of the 9 responders, 8, 6 and 4 demonstrated a 30, 40 and 50% rise, respectively, in a total of 2 further piRNAs. In addition, 3 of the responders showed a 50% or greater rise in the expression of another small RNA,SNORD5. On comparing fold-change in serum testosterone with fold-change in the above transcripts, a positive correlation was detected forSNORD5(P = 0.01).ConclusionsThe identification of a dynamic and androgen-responsive PBMC transcriptome extends the potential value of the hCG test for the assessment of androgen sufficiency.
Contrasting Determinants of Mutation Rates in Germline and Soma
Authors: Chen Chen , Qi Hongjian , Shen Yufeng , Pickrell Joseph , Przeworski Molly 
Published: July 2017

AbstractA number of genomic features influence regional mutation rates in germline and soma. To examine if some factors behave differently in the two tissue...Recent studies of somatic and germline mutations have led to the identification of a number of factors that influence point mutation rates, including CpG methylation, expression levels, replication timing, and GC content. Intriguingly, some of the effects appear to differ between soma and germline: in particular, whereas mutation rates have been reported to decrease with expression levels in tumors, no clear effect has been detected in the germline. Distinct approaches were taken to analyze the data, however, so it is hard to know whether these apparent differences are real. To enable a cleaner comparison, we considered a statistical model in which the mutation rate of a coding region is predicted by GC content, expression levels, replication timing, and two histone repressive marks. We applied this model to both a set of germline mutations identified in exomes and to exonic somatic mutations in four types of tumors. Most determinants of mutations are shared: notably, we detected an effect of expression levels on both germline and somatic mutation rates. Moreover, in all tissues considered, higher expression levels are associated with greater strand asymmetry of mutations. However, mutation rates increase with expression levels in testis (and, more tentatively, in ovary), whereas they decrease with expression levels in somatic tissues. This contrast points to differences in damage or repair rates during transcription in soma and germline.
Природні детоксиканти в раціоні та їх вплив на продуктивність і якість продуктів забою свиней на відгодівлі
Authors: Dyachenko L.S. , Syvyc T.L. , Tytariova O.M. , Kuzmenko O.A. , Bilkevich V.V. 
Published: July 2017

<p> </p><p>Among the pollutants one of the main factor is heavy metals. Cadmium, a typical representative of this group has a very toxic effect on both the animal and the human. It is not involved in the vital processes of living organisms. Instead, exceeding the maximum permissible levels of cadmium has negative affects on animal, and accumulation in the tissues, is a threat to human life - the consumer of animal products. The results of research show efficiency of dry apple pulp and dry beet pulp as natural detoxicant of heavy metals, including cadmium, in the body of young pigs. Experimentally proved that the cadmium content in complete feed with the maximum permissible level (1 mg/kg) predetermined decrease of average daily gain of pigs experimental group, compared with the control, by 10.8% and increase of feed conversion by 9.8%. The introduction to the mixed fodder of dry apple pulp (45 g/kg) or dry beet pulp (45 g/kg) with of the same cadmium content contributed that the productivity of animals, the cost of feed for 1 kg of growth, slaughter weight, carcass yield, weight mascara and economic efficiency of fattening young pigs approaching to the level of control. In addition, the use of dry apple pulp and dry beet pulp as natural forage detoxicant in diets of young pigs helps significantly (P &lt;0.05-0.001), reduction of heavy metals, including cadmium in products of slaughter (meat, bacon, liver, kidney, heart), which increases their purity, environmental safety and competitiveness.</p>
Generic realignments in Maxillariinae (Orchidaceae)
Authors: Blanco Mario A , Carnevali German , Witten W. Mark , Singer Rodrigo B. , Koehler Samantha , Williams Norris H. , Ojeda Isidro , Neubig Kurt M. , Endara Lorena 
Published: July 2017

Un reciente análisis filogenético de cuatro regiones de ADN para ca. 354 especies de la subtribu Maxillariinae indican fuertemente que el género Maxillaria, en su circunscripción tradicional, es altamente polifilético. Presentamos una nueva clasificación filogenética para Maxillariinae que reconoce 17 géneros.Los cambios necesarios incluyen: 1) la resurrección de los géneros Camaridium, Heterotaxis, y Ornithidium; 2) el reconocimiento de los recientes segregados genéricos Brasiliorchis (=Maxillaria secciónRepentes), Christensonella (=Maxillaria sección Urceolatae), Nitidobulbon (en prensa), y una Sauvetrea recircunscrita (=Maxillaria sección Trigonae); 3) la adopción de los nuevos géneros Inti (=Maxillaria secciónPolyphyllae), Mapinguari, Maxillariella (=Maxillaria secciones Ebulbes y Erectae), y Rhetinantha; 4) transferencias de Maxillaria sección Reflexae a Ornithidium, y Maxillaria sección Rufescens a Mormolyca; y 5) puesta en sinonimia de los géneros Adamanthus, Pseudomaxillaria, Psittacoglossum y Sepalosaccus (bajo Camaridium), Anthosiphon (bajo Cryptocentrum), Chrysocycnis (bajo Mormolyca), Dicrypta, Marsupiaria y Pentulops (bajo Heterotaxis), y Laricorchis, Neo-Urbania, y Siagonanthus (bajo Ornithidium). Algunos sinónimos nuevos al nivel de especie también son presentados.