bluuebunny/crossref_metadata_2025_split huggingface dataset:
Severe periodontal destruction in a patient with advanced anemia: A case report
Authors: Hatipoglu Hasan , Hatipoglu Mujgan Gungor , Cagirankaya L Berna , Caglayan Feriha 
Published: September 2019

ABSTRACTAnemia is a worldwide health problem that manifests in different types. This illness has some causes, which affect body health generally. Studies have shown that some anemia types make humans more sensitive to infectionsA 23-year-old woman was referred to our clinic with complaints about tooth mobility. Generalized severe alveolar bone loss was verified by a radiographic examination. After a comprehensive clinical examination and taking her medical history, we decided to schedule a medical consultation with a physician. Medical consultation revealed that the patient suffered from severe anemia. Her periodontal treatment was modified because of her systemic situation. After treatment, the patient was monitored for one year. Her periodontal and systemic statuses were stable during this periodIn this case report, severe periodontal destruction was observed in a patient with severe iron and B12 deficiency anemia. (Eur J Dent 2012;6:95-100)
Influence of light source and extended time of curing on microhardness and degree of conversion of different regions of a nanofilled composite resin
Authors: Lima Adriano Fonseca , de Andrade Kamila  Menezes Guedes , Alves Louise  Esther da Cruz , Soares Giulliana  Panfiglio , Marchi Giselle  Maria , Aguiar Flávio  Henrique Baggio , Peris Alessandra   Rezende , Mitsui Fábio   Hiroyuki Ogata 
Published: September 2019

ABSTRACTObjectives: The aim of this study was to evaluate the effects of different light sources and curing time on the degree of conversion and microhardness of two surfaces within a nanofilled composite resinMethods: Four experimental groups (n=10) were formed in accordance with the light source (quartz-tungsten halogen (QTH – 600mW/cm2), or light-emitting-diode (LED -800mW/cm2)) and the time of curing (20 s or 40 s). The specimens were prepared with a circular mould (5 mm Ø and 2 mm thick), according to the respective protocol, and the Knoop microhardness and degree of conversion was measured at the top and the base of the specimens. The degree of conversion was evaluated by the Fourier transform infrared spectrometer (FTIR). The results were analyzed by ANOVA two-way repeated measures and Tukey’s test (α=,05)Results: Both the degree of conversion and microhardness were higher at the top than at the bottom of the specimens. The QTH light source presented better values on the degree of conversion evaluation, but this result was not observed in the microhardness evaluation. Although forty seconds of curing promotes an increased level of microhardness, it did not influence the degree of conversionConclusion: It could be concluded that increasing the time of curing to 40 s promotes an increase in microhardness, but it does not influence the degree of conversion of a nanofilled composite resin. QTH promote better monomeric conversion; however, the microhardness values are similar to LED curing. For all situations tested, the bottom of the specimens presented lower results than the top. (Eur J Dent 2012;6:153-157)
Assessment of a dental rural teaching program
Authors: Johnson George , Blinkhorn Anthony 
Published: September 2019

ABSTRACTObjectives: To evaluate the effectiveness of a rural clinical placement on students’ self-perceived clinical skills and work location choice post-graduationMethods: A one month rural placement program was introduced in 2008-2009 for 4th year dental undergraduates. Student’s views on the rural exercise were collected by pre and post self-completion questionnaires, which were distributed to rural placement students and to the students who did not participate in the placement. Information was collected on self-reported skill levels in various clinical techniques using Likert scales and future rural work intentions. Clinical supervisors and University Faculty Members opinions on the students clinical work were also collected via interviewsResults: A one month rural placement program was introduced in 2008-2009 for 4th year dental undergraduates. Student’s views on the rural exercise were collected by pre and post self-completion questionnaires, which were distributed to rural placement students and to the students who did not participate in the placement. Information was collected on self-reported skill levels in various clinical techniques using Likert scales and future rural work intentions. Clinical supervisors and University Faculty Members opinions on the students clinical work were also collected via interviewsConclusions: The rural placement improved the self-perceived clinical skills of the volunteers and enhanced positive attitudes towards working in a rural location. (Eur J Dent 2012;6:235-243)
Similar hematological and biochemical parameters among periodontitis and control group subjects
Authors: Prakash Shobha , Dhingra Kunaal , Priya Shanmuga 
Published: September 2019

ABSTRACTObjectives: There are conflicting reports in the past literature documenting the tendency of anemia in patients with periodontitis. Hence, this study was undertaken to assess whether periodontitis may cause an anemic state, by evaluating and comparing the red blood cell count, levels of hemoglobin, hematocrit, erythrocyte sedimentation rate (ESR), serum iron and serum ferritin between subjects with and without periodontitis.Methods: In this cross-sectional study, 140 systemically healthy subjects of both sexes (mean age 46 years) were recruited as control group (50 subjects without periodontitis) and study groups comprising 30 patients each with mild, moderate and severe chronic generalized periodontitis. Periodontal parameters and orthopantamographs were taken for all the groups and then 5 mL venous blood samples were sent for complete blood count and biochemical analysis. Inter-group and intra-group comparisons were performed for all the assessed parametersResults: The periodontal parameters were significantly higher (P≤.05) in periodontitis patients. Except for the ESR, which was significantly higher (P=.03) in the mild periodontitis group than the control group, hematological and biochemical parameters were not significantly different (P>.05) among the study groups or between the control and study groups. This difference was not evident even among the male and female subjects of both control and study groups (P>.05).Conclusions: Within the limits of this cross-sectional study, it can be concluded that the presence and severity of periodontitis may not affect the hematological and biochemical parameters of an individual. Further long term studies are however encouraged to validate these findings. (Eur J Dent 2012;6:287-294)softening of enamel (erosion). In respect to the chemical variables tested, despite not statistically significant, the pH seems to have more influence on the erosive potential of these drinks. (Eur J Dent 2007;1:10-13)
Thermal image building inspection for heat loss diagnosis
Authors: Preda A. , Scurtu I. C. 
Published: September 2019

Abstract
Thermal imaging inspection for building applications it is powerful and non invasive method for monitoring and diagnosing the condition of buildings. With a thermal imaging camera you can identify problems early. This method allows us to check and correct issues before becoming more serious and more costly. By this method, we can exemplify the heat loss through the surface of the building. Thermal imaging consists of scanning the building with infrared, using a special camera. The radiated heat leads to a temperature variation on the surface of the building element in which is embedded. This method, corroborated with the calculation of heat loss, provides a technical and economical solution for the problem of thermal discomfort in the building.
Retrofit Solutions for Green and Efficient Inland Ships
Authors: Chirica I , Presura A , Anghelută C M 
Published: September 2019

Abstract
The modernization of the Danube IWT fleet involves developing the needed know-how for retrofitting of the Romanian fleet in accordance with Stage V emissions legislation. The end goal is achieving lower air pollutant emissions by increasing efficiency, lowering energetic needs and decreasing the environmental footprint of the Danube IWT fleet. The following paper presents principles of the design-for-retrofitting methodology developed for inland ships. The technologies involved aim at improving the efficiency of emissions after-treatment and meeting Stage V requirements.
Experimental Installation used for Preparation of Breathing Mixtures Needed for Professional Diving
Authors: Rus Simona , Degeratu Mircea , Alboiu Felicia , Nica-Rus Livia , Kaiter Edith-Hilde 
Published: September 2019

Abstract
Starting from the mathematical modelling of the gas dynamics processes and, of course, from the needs of the Diving Center, several schemes of experimental installations were developed. These schemes are used for the preparation of binary or ternary gas mixtures, specific: for autonomous professional diving, for the system diving, respectively for those simulated or real which are performed in the hyperbaric chambers of the Diving Center or in the diving turrets.
The principle of preparing breathing gas mixtures in the experimental installation ensures that an invariable flow rate (with the pressure of the gaseous mixture from a pressurized cylinder) is injected (constant mass flow) while ensuring the permanent control of this flow. The installation delivers an invariable gas mixture flow regardless of the gas pressure value inside the storage cylinder.
Depending on the number of components from which the binary or ternary breathable mixture is to be prepared, the design of the plant has been structured in two parts or in the case of a more complex ternary structure of the gaseous mixture, the plant has three distribution-injection lines active. Each of these lines independently carries the three pure component gases used to continuously produce the required respiratory mixture.
Finally, the tests of the gas-dynamical processes related to the plant were presented very succinctly, following a comprehensive testing and evaluation plan in the summer of last year.
Contributions to the transfer of heat and mass into brick walls with vertical holes
Authors: Calbureanu - Popescu Madalina - Xenia , Bica Marin , Calbureanu - Popescu Diana - Mara , Tutunea Dragos 
Published: September 2019

Abstract
The paper presents the analysis of heat and mass transfer in brick walls with vertical holes, type of envelope widely used in the construction of residential dwellings in Romania. Moving towards the concept of passive house leads to the sealing of the envelope as much as possible, leading to complex mass transfer phenomena. The analysis of winter mass transfer phenomena for buildings in climate areas II, III for such a type of envelope leads to conclusions that can be used for solutions that lead to high energy efficiency in conditions of interior comfort and fulfillment of parameters leading to the occupants’ health.
Environmental protection using structural analysis of ships
Authors: Savin M , Presura A , Chirica I 
Published: September 2019

Abstract
Naval accidents are one of the most common causes of water and coast around pollution and also for the deterioration of the associated ecosystems. In order to reduce the risk of spills of hazardous substances in water one of the methods is to study the behavior of naval structures in the event of collisions.
This paper aims to propose a methodology for collision analyze, the case study being a river barge structure with side impact generated by another barge. The structural analysis used the finite element method with an explicit solver and the dynamic load of the side impact collision was applied in form of initial kinetic energy of the striking ship. Standard ship design Rules are compared with an original approach to reveal the advantages and disadvantages of each method.
The influence of variation of the different parameters on the obtained results is analyzed, in order to outline an efficient and as accurate as possible methodology, considering the necessary computational effort.
Genic Variation, Systematic, and Biogeographic Relationships of Some Galliform Birds
Authors: Gutiérrez R. J. , Zink Robert M. , Yang Suh Y. 
Published: September 2019

Abstract
Starch gel electrophoresis was used to evaluate levels and patterns of genic differentiation among 10 species of galliform birds in the Phasianidae (9) and Tetraonidae (1). The phasianids included on Old World quail, a partridge, a pheasant, and six species of New World quail. Measures of within-species genetic variation included heterozygosity, percentage polymorphic loci, and number of alleles per polymorphic locus. These values were similar to but lower than those reported for other birds. Genetic distances among conspecific populations and among congeneric species were low compared to other avian results. Genetic distances among noncongeners both within and between families were considerably higher, however, than those reported for passerine birds. Thus, more studies of levels of genic differentiation among nonpasserines are required to complement the literature on genic divergence among passerines and to enable us to make general statements about genic evolution in birds.
Phenograms and phylogenetic trees suggested that Phasianus colchicus, Tympanuchus pallidicinctus, Coturnix coturnix, Alectoris chukar, and the New World quail (Odontophorinae) are genically distinct taxa. The branching sequence among the non-Odontophorine taxa is unresolved by our data. The branching order among taxa in the Odontophorinae from a common ancestor is: Cyrtonyx montezumae, Oreortyx pictus, Colinus virginianus, Callipepla squamata, Lophortyx gambelii, and L. californicus. The genera Cyrtonyx, Oreortyx, and Colinus are clearly distinct from Callipepla and Lophortyx, which are quite similar to each other genically.
We use a fossil species from the mid-Miocene of Nebraska to calibrate our genetic distances. We estimate dates of divergence of taxa in the Odontophorinae and offer a hypothesis on their historical biogeography. Our analysis suggests that three east-west range disjunctions could account for the origin of Oreortyx (12.6 MYBP), Colinus (7.0 MYBP), and Callipepla-Lophortyx (2.8 MYBP). We suggest that L. californicus and L. gambelii should be considered distinct species because of an apparent lack of panmixia in zones of sympatry, even though the D between them is typical of that found between subspecies of other birds. Oreortyx and Colinus should remain as distinct genera, while our data are equivocal on the status of Callipepla and Lophortyx.
Endocrine Responses to Inclement Weather in Naturally Breeding Populations of White-Crowned Sparrows (Zonotrichia leucophrys pugetensis)
Authors: Wingfield John C. , Moore Michael C. , Farner Donald S. 
Published: September 2019

Abstract
Plasma levels of luteinizing hormone (LH), testosterone, and corticosterone were measured in relation to periods of inclement versus fair weather during the reproductive season of the Puget Sound White-crowned Sparrow (Zonotrichia leucophrys pugetensis). In 1974, cool stormy weather in spring delayed the onset of breeding by one month and also prolonged the period of elevated circulating levels of LH and testosterone, compared with the fair spring of 1975. Inclement weather in 1974 did not appear to be stressful, as indicated by body weights and plasma levels of corticosterone. In late May 1980, however, a storm occurred after nesting activities had begun and all pairs sampled were feeding young. In this case, plasma levels of corticosterone were greatly elevated above those of birds sampled at the same time in the warm spring of 1979 and also above those of birds sampled in spring of both 1974 and 1975. In addition, fat depots were virtually exhausted in birds sampled during the storm of 1980, suggesting that these birds were stressed. Most pairs lost their brood in May 1980, presumably to starvation, and renested after amelioration of environmental conditions in June.
These data suggest that although storms may modify the onset and temporal progression of the reproductive cycle, they are stressful to adults only when the nesting phase is in progress. Thus, the underlying mechanisms by which inclement weather delays the onset of breeding or disrupts the nesting once underway are likely to have different endocrine bases.
Identification of Natal Locales of Peregrine Falcons (Falco peregrinus) by Trace-Element Analysis of Feathers
Authors: Parrish Jimmie R. , Rogers David T. , Ward F. Prescott 
Published: September 2019

Abstract
Samples of secondary remiges collected from nestling Peregrine Falcons (Falco peregrinus) in Alaska and western Greenland were analyzed for trace-element content using instrumental neutron-activation analysis. Concentrations of 14 trace elements were subjected to a series of multivariate discriminant function analyses to ascertain whether or not these concentrations could be used to identify the geographic origins of the birds sampled. Individual falcons from the three areas studied can be placed in their proper natal locale with 100% predictability. Mercury (Hg) was the best individual discriminator for separating sample groupings. Aluminum (A1) and Vanadium (V), in conjunction with Hg, provided the most discriminant trio of elements when various groupings of element concentrations were considered as predictors.
Genetic Determination of Partial Migration in the European Robin (Erithacus rubecula)
Authors: Biebach Herbert 
Published: September 2019

Abstract
Partially migratory behavior, the occurrence of resident and migratory individuals in a population, has been reported in free-living birds. I examined this behavior in the European Robin (Erithacus rubecula) under controlled experimental conditions. In an offspring group from a partially migratory field population, 36 (78%) individuals exhibited migratory restlessness (migrants), whereas 10 did not (residents). There were more migrants (89%) in an offspring group from exclusively migratory parents and fewer migrants (53%) from an offspring group from mostly resident parents than there were in the field population. A heritability value of 0.52 was found under the experimental conditions. A connection between the genetic determination of migratory behavior and unpredictable winter weather in the breeding area is discussed.
Sexual Selection and Interspecific Competition: A Field Experiment on Territorial Behavior of Nonparental Finches (Vidua spp.)
Authors: Payne Robert B. , Groschupf Kathleen D. 
Published: September 2019

Abstract
Singing male indigobirds (Vidua raricola and V. funerea) are interspecifically territorial in their local distributions and, as well, respond to experimental presentations of interspecific stimuli. When singing males were experimentally removed from their territories, however, they were replaced by other males of the same species. The distribution of replacements was consistent with an hypothesis of sexual selection but not with one of interspecific competition. Males matched the songs of the males they replaced, suggesting intraspecific song mimicry.
Facultative Extension of Fall Migration by Yellow-Rumped Warblers (Dendroica coronata)
Authors: Terrill Scott B. , Ohmart Robert D. 
Published: September 2019

Abstract
Many nocturnally migrating birds show at least some degree of winter site fidelity. Laboratory tests of nocturnal activity, or Zugunruhe patterns, and displacement experiments indicate that migratory distances may be under endogenous control. Yellow-rumped Warblers (Dendroica coronata auduboni) displayed a southerly nocturnal orientation well into winter months, past the conventional migratory period. Additionally, population shifts between highly isolated, limited, desert riparian habitats reflected a facultative migration from north to south. The magnitude of movement was correlated with food-resource abundance, which was dependent on climatic conditions. This suggests that the birds maintain a physiological state that enables them to winter as far north as possible but allows for a correctly oriented movement if conditions become unfavorable. Our results indicate considerable plasticity in what is generally considered a more rigidly fixed process.
Chick Growth, Sibling Rivalry, and Chick Production in American Black Oystercatchers
Authors: Groves Sarah 
Published: September 2019

Abstract
I studied chick growth, sibling rivalry, and chick production in a population of American Black Oystercatchers (Haematopus bachmani) on Cleland Island, British Columbia from 1975 to 1978. For these birds, survival from hatching until time of first flight is the critical life-history stage. Chick growth varied with brood size, and heavier chicks had higher survival to the time of first flight. Once chicks could fly, however, their survival to 1 and 2 yr of age was not related to brood size or weight at time of first flight. Dominance hierarchies based on weight existed in two-chick broods, and dominant sibs could control access to parental feedings through sibling rivalry. Sibling rivalry probably increases the likelihood of some chick production in years when food is difficult to obtain.
The Effect of Egg Temperature on Attentiveness in the Belding's Savannah Sparrow
Authors: Davis Stephen D. , Williams Joseph B. , Adams Wendy J. , Brown Stephanie L. 
Published: September 2019

Abstract
We manipulated egg temperatures in nests of the Belding's Savannah Sparrow, (Passerculus sandwichensis beldingi), an open-nesting passerine of which only the female incubates. Females increased their attentiveness by 22.0% when we cooled their eggs and decreased their attentiveness by 28.4% when we warmed their eggs. The range of adjustment approximated the upper and lower limits of attentiveness observed for our population during one breeding season; adjustments were primarily made by changing the length of both attentive and inattentive periods. Our results indicate that these birds adjust their attentive time in direct response to fluctuations in egg temperature, independently of diurnal fluctuations in air temperature. They also support the hypothesis that attentiveness is ultimately controlled by an internal rhythm and is only modified by, but not completely explained by, responses to egg temperature.
Counting Seabirds at Sea from Ships: A Review of Methods Employed and a Suggestion for a Standardized Approach
Authors: Tasker Mark L. , Jones Peter Hope , Dixon Tim , Blake Barry F. 
Published: September 2019

Abstract
We review the methods used to study seabirds at sea from ships, discuss the problems posed in making reliable observations in relation to the design of research programs, and describe a method currently in use around the seas of Great Britain. We suggest a framework for future studies, incorporating features likely to stabilize bias. The key items in this recommendation are (1) the use of a band transect in order to provide density estimates, and (2) a method to correct for movement of flying birds in the band transect in order to minimize bias caused by such movement.