bluuebunny/crossref_metadata_2025_split huggingface dataset:
Implant Placement under Existing Removable Dental Prostheses and the Effect on Follow‐Up and Prosthetic Maintenance
Authors: Marotti Juliana , Gatzweiler Bodo , Wolfart Mona , Sasse Martin , Kern Matthias , Wolfart Stefan 
Published: July 2018

AbstractPurposeThe aim of this prospective clinical study was to compare the maintenance interventions required for solely implant‐retained overdentures (I‐OD) with that of overdentures retained by a combination of telescopic crowns and implants (T/I‐OD).Materials and methodsThe participants in this study were 22 patients who initially presented either with a removable complete denture (n = 11) or with an overdenture retained by 1 to 2 telescopic crowns on natural teeth (n = 11). Subsequently, the total number of abutments was increased to 5 to 6 (maxilla) or 4 to 5 (mandible) by placing implants in strategically advantageous regions, generating two distinct groups: I‐OD and T/I‐OD. Ball attachments were connected to the implants and integrated into the existing denture. The maintenance aspects were analyzed according to the type of treatment (preventive, biological, and technical) and to the severity of treatment (minimal, moderate, and extensive).ResultsDuring a mean observation time of 6.5 years, the tooth survival rate was 89% (T/I‐OD) and the implant survival rate 100% (both groups). The survival rates of the overdentures ranged from 90.9% (I‐OD) to 100% (T/I‐OD). A mean number of 0.6 (I‐ODs) and 2.0 (T/I‐OD) treatments were performed for biological reasons; and 8.2 (I‐ODs) and 9.6 (T/I‐OD) for technical reasons, per patient, during the observation time. From biological aspects, significantly more extensive maintenance was found to be necessary in the T/I‐OD group than in the I‐OD group.ConclusionsThe therapeutic concept of implant placement under existing prostheses was promising when performed in indicated cases.
Remote spectral–compositional analysis of basalt mineralogy at Hansteen‐Billy, Moon
Authors: Chauhan Mamta , Bhattacharya Satadru , Pathak Sumit , Chauhan Prakash 
Published: July 2018

AbstractThe Hansteen‐Billy region of the Moon lying toward the southwest edge of Oceanus Procellarum is characterized by emplacement of three different aged basaltic units viz. INm, Im, and Em. The present study primarily utilizes high‐resolution Chandrayaan‐I, Moon Mineralogy Mapper (M3) data clipped at ~2.5 μm for mineral analysis of these units. The spectra of all the three regions show two prominent absorption bands. Spectral analysis characterizes the earliest INm basalts as low‐Ca pyroxenes with large band area ratios (BAR) and nearly similar B‐I and B‐II strength. The Em and Im basalts are Ca and high‐Ca pyroxenes, respectively, with relatively less BAR values and more B‐II/B‐I strength. The relative content of their spectra after olivine correction appears to be dominated by pyroxene. The obtained results have been used for estimation of the compositional characteristics of pyroxenes from laboratory‐based calibration equations. The pyroxene composition for INm basalts indicates their pigeonitic affinity, whereas the Im and Em basalts is close to augite. The estimated temperature of crystallization suggests that basalts in this region evolved at higher temperature and are preserved in a metastable condition due to quick cooling. Furthermore, the area is characterized by increase in concentration of both the Fe and Ti with age as assessed from Clementine mineral map. The obtained results have been discussed in relation with source of the magma.
Genesis of the South Zhuguang Uranium Ore Field, South China: Pb Isotopic Compositions and Mineralization Ages
Authors: Zhang Chuang , Cai Yuqi , Dong Qian , Xu Hao 
Published: July 2018

AbstractU–Pb isotopic analyses indicate that ores from the South Zhuguang uranium ore field, south China, have high common (non‐radiogenic) Pb contents, with variable and relatively radiogenic initial Pb contents. The U–Pb isochron method was used to date these ores, with plots of208Pb/204Pb and207Pb/204Pb versus206Pb/204Pb being used to identify sample suites with similar initial Pb isotopic ratios and to normalize variable initial Pb isotopic ratios. The resulting U–Pb isochrons indicate two substages of uranium mineralization at ~57 and 52 Ma, with a later hydrothermal reformation at ~49 Ma, which homogenized Pb isotopic compositions. Initial Pb isotopic systematics indicate that the ore‐forming fluid was characterized by high206Pb/204Pb and207Pb/204Pb ratios and low208Pb/204Pb ratios, suggesting that the ore‐forming fluid was sourced from Cretaceous–Paleogene red‐bed basins, rather than from magma or the mantle, with consideration of mineralization ages.
Shrouding Add‐On Information: An Experimental Study*
Authors: Normann Hans‐Theo , Wenzel Tobias 
Published: July 2018

AbstractWe explore how increased competition affects firms’ obfuscation strategies in a laboratory experiment. Firms sell a base good and an add‐on product. Besides choosing the base‐good price, sellers take an action that mimics the effects of shrouding the add‐on product. Shrouding is an equilibrium but an unshrouding equilibrium coexists. In our experiment, more competition matters, in that only duopolistic markets are frequently shrouded whereas four‐firm markets are not. With repeated interaction, shrouding rates do not increase. However, the opportunities to shroud facilitate tacit collusion on the base‐good price for the duopolies: the unshrouding equilibrium serves as a credible punishment if deviations occur.
Popular, rejected, neglected, controversial, or average: Do young children of different sociometric groups differ in their level of oral communicative competence?
Authors: van der Wilt Femke , van der Veen Chiel , van Kruistum Claudia , van Oers Bert 
Published: July 2018

AbstractChildren’s sociometric status refers to their position within the peer group and plays a major role in their future social development. It is therefore important to investigate factors that are related to it. To date, little attention has been paid to the potential role of oral communicative competence. The present study investigated sociometric group differences in the level of oral communicative competence in a sample of N = 570 children in early childhood education. Sociometric status was measured using a nomination procedure. Based on peer nominations, children were categorized into five sociometric groups: (1) popular (generally well‐liked), (2) rejected (generally disliked), (3) neglected (low visibility and neither liked nor disliked), (4) controversial (high visibility and both liked and disliked), and (5) average (at or about the mean on both likability and visibility). Children’s level of oral communicative competence was assessed with the Nijmegen Test for Pragmatics. Results of multi‐level analyses revealed significant sociometric group differences: children who were rejected or neglected by their peers exhibited lower levels of oral communicative competence than average children. Based on these findings, teachers in early childhood education are encouraged to pay more explicit attention to the promotion of their pupils’ oral communicative competence.
Dynamic
Heat Transfer Study of a Triangular-Shaped Latent Heat Storage Unit for the Attic Space of a
Domestic Dwelling
Authors: Tabassum Tonny , Hasan Mainul , Begum Latifa 
Published: July 2018

Abstract
A two-dimensional (2D) numerical study is carried out to investigate the thermal performance of an impure phase-change material (PCM) in an equilateral triangular-shaped double pipe heat exchanger. To tackle the irregular boundaries, a nonorthogonal body-fitted coordinate (BFC) transformation technique is employed. The nondimensional transformed curvilinear conservation equations for mass, momentum, and energy are written in terms of physical variables and they are solved using a control-volume based finite difference method on a staggered grid arrangement. The developed model is then used to study the effects of the inner tube wall temperature, the initial temperature of the solid PCM, and the shape, as well as the position of the inner tube in the annulus on the melting characteristics, and cumulatively stored energy. Various quantities such as average Nusselt numbers over the inner tube surface, the total and complete melt fractions, and the latent and total stored energies all as a function of the melting time are reported. A correlation for the average Nusselt number on the inner tube wall is also provided. The numerical results show that the shape and the placement of the inner tube are crucial for the efficient design of a latent heat thermal energy storage (LHTES) system. The storage of energy is greatly influenced by the change of the inner tube wall temperature compared to the change of initial solid PCM temperature.
Grooved Pipe Joints on Shipboard Applications
Authors: Dole Douglas 
Published: July 2018

Grooved piping has been used on shipboard applications since the early 1920’s, first in the United Kingdom than many other parts of the world. It gained rapid acceptance in the UK for its many advantages over flange connections. In the US it was used on many Merchant and Naval vessels constructed during World War II, partly for its speed of installation, but also for its less fussy tolerance requirements with regard to pipe length and joint alignment. It has since grown to become used worldwide in many types of vessels. This paper enumerates grooved pipe joints advantages and its technical underpinnings.
Paper published with permission.
Design and Certification of Type C Independent Tanks for Gas Fuelled Ships
Authors: Thomas Roy , Patel Harish 
Published: July 2018

The design and certification of Type C independent tanks for gas fuelled ships presents a unique set of challenges. This paper examines some of these challenges and provides a step-by-step overview of the design and certification process for these tanks. Apart from design considerations, this paper also elaborates on some of the fabrication, inspection and testing requirements for these tanks.
Paper published with permission.
Fully Constrained Platform and its Applications
Authors: Lee Li 
Published: July 2018

This paper presents a new ocean platform concept, the fully constrained platform (FCP). In a nut-shell, FCP is a fixed-in-place deepwater platform concept, which has the least amount of motion in harsh environment, compared to all other deepwater platforms currently in use. For an intermediate water depth, from 100 to 1,000 ft, the FCP concept could be competitive to existing designs. FCP is the core technology for a new class of marine structures, and has the potential to be used anywhere in world’s ocean for any purpose, which requires a support structure with minimum motions.
Paper published with permission.
Development of Autonomous Underwater Vehicle for Marine Application
Authors: Khastgir Siddartha , Sahoo Anubhav 
Published: July 2018

Last decade has seen a spurt in autonomous technologies in military and civilian sectors. The search for oil and gas is moving into ever deeper waters, and the need for coastal surveillance and climatic monitoring, makes underwater autonomous assistance quite obvious for a developing nation like India with thousands of kilometres of coastline. Using such platforms in these endeavours provides an efficient way to keep human life out of harm’s way in hostile environments.
The prototype developed has its navigation based on an internal IMU (Inertial Mass Unit) and the software is extensible to support DVL (Doppler Velocity Logger) based navigation. Near range object detection and path planning is achieved via Image Processing and using two surge and one heave thrusters the bot can operate in three degrees of freedom. The modular structure allows for the addition of extra sensors like pressure, temperature and manipulators like grippers and torpedoes. It has a Intel Atom processor, which runs the control algorithms for motion and required task completion.
Paper published with permission.
Nutritional Intake in Australian Football Players: Sports Nutrition Knowledge and Macronutrient and Micronutrient Intake
Authors: Lohman Rachel , Carr Amelia , Condo Dominique 
Published: July 2018

This study compared the energy, macronutrient, and micronutrient intake in elite and sub-elite Australian football players and compared nutritional intake to current recommendations. Sports nutrition knowledge was also quantified and compared between elite and sub-elite players. Nutritional intake was quantified in elite (n = 35) and sub-elite (n = 31) players using the Automated Self-Administered 24-Hour Dietary Assessment Tool. The 88-item Sports Nutrition Knowledge Questionnaire was used to quantify knowledge related to general nutrition concepts, fluid, recovery, weight control, and supplements. Elite players had a higher nutritional intake (mean ± SD) for energy (14,140 ± 5,887 kJ [elite players] vs 10,412 ± 3,316 kJ [sub-elite players]; P = .002) and fat (40% ± 6% [elite players] vs 34% ± 6% [sub-elite players]; P < .001). Protein intake exceeded the recommended intake in 77% of elite players and 68% of sub-elite players, and carbohydrate intake was below the recommended intake for 91% of elite players and 97% of sub-elite players. Sodium intake recommendations were exceeded by 100% of elite and sub-elite players. Both elite and sub-elite players answered 51% of the Sports Nutrition Knowledge Questionnaire questions correctly. The percentage of correctly answered questions specific to supplements was 27% for elite players and 18% for sub-elite players. The results of the current investigation suggest that Australian football players’ nutritional intake is inconsistent with current recommendations for macronutrients and some micronutrients. Furthermore, players may benefit from additional knowledge of the risks and benefits of supplement use.
Antimicrobial Resistance in
Bordetella bronchiseptica
Authors: Kadlec Kristina , Schwarz Stefan 
Published: July 2018

ABSTRACT

Bordetella bronchiseptica
is involved in respiratory tract infections mainly in dogs and pigs but may also cause infections in humans. Valid and representative data on antimicrobial susceptibility of
B. bronchiseptica
is rare. Approved antimicrobial susceptibility testing methods have been published, but very few clinical breakpoints are available. The MIC values are low for most agents but high for β-lactam antibiotics and macrolides. Information on the genetic basis of resistance is scarce. For a small number of isolates that are resistant or show elevated MICs, the molecular basis of resistance was identified. Three tetracycline resistance genes,
tet
(A),
tet
(C), and
tet
(31), coding for major facilitator superfamily efflux pumps, were identified. Two other major facilitator superfamily exporter genes confer resistance to chloramphenicol (
cmlB1
) or to chloramphenicol and florfenicol (
floR
). Two class B chloramphenicol acetyltransferase genes (
catB1
and
catB3
), which confer resistance to nonfluorinated phenicols by enzymatic inactivation, have been identified in
B. bronchiseptica
. Like the trimethoprim resistance genes
dfrA1
and
dfrB1
, which code for trimethoprim-insensitive dihydrofolate reductases, the genes
catB1
and
catB3
were located on gene cassettes and found in class 1 integrons also harboring the sulfonamide resistance gene
sul1
. In addition, the gene
sul2
has also been detected. Both
sul1
and
sul2
code for sulfonamide-insensitive dihydropteroate synthases. A gene cassette harboring the β-lactamase gene
bla
OXA-2
was also identified, whereas β-lactam resistance in
B. bronchiseptica
seems to be more likely due to reduced influx in combination with the species-specific β-lactamase encoded by
bla
BOR-1
. The resistance genes were mostly located on conjugative plasmids.
Small RNAs Involved in Regulation of Nitrogen Metabolism
Authors: Prasse Daniela , Schmitz Ruth A. 
Published: July 2018

ABSTRACT

Global (metabolic) regulatory networks allow microorganisms to survive periods of nitrogen starvation or general nutrient stress. Uptake and utilization of various nitrogen sources are thus commonly tightly regulated in
Prokarya
(
Bacteria
and
Archaea
) in response to available nitrogen sources. Those well-studied regulations occur mainly at the transcriptional and posttranslational level. Surprisingly, and in contrast to their involvement in most other stress responses, small RNAs (sRNAs) involved in the response to environmental nitrogen fluctuations are only rarely reported. In addition to sRNAs indirectly affecting nitrogen metabolism, only recently it was demonstrated that three sRNAs were directly involved in regulation of nitrogen metabolism in response to changes in available nitrogen sources. All three
trans
-acting sRNAs are under direct transcriptional control of global nitrogen regulators and affect expression of components of nitrogen metabolism (glutamine synthetase, nitrogenase, and PII-like proteins) by either masking the ribosome binding site and thus inhibiting translation initiation or stabilizing the respective target mRNAs. Most likely, there are many more sRNAs and other types of noncoding RNAs, e.g., riboswitches, involved in the regulation of nitrogen metabolism in
Prokarya
that remain to be uncovered. The present review summarizes the current knowledge on sRNAs involved in nitrogen metabolism and their biological functions and targets.
Recommendations for the selection and treatment of patients with idiopathic intracranial hypertension for venous sinus stenting
Authors: Fargen Kyle M , Liu Kenneth , Garner Rebecca M , Greeneway Garret P , Wolfe Stacey Q , Crowley R Webster 
Published: July 2018

IntroductionAlthough venous sinus stenting (VSS) has emerged as a promising treatment option for patients with idiopathic intracranial hypertension (IIH) and associated venous sinus stenosis, there is considerable ambiguity regarding patient selection criteria, treatment protocols, and management strategies.MethodsAn extensive literature review was performed to identify all reports of VSS in patients with IIH using PubMed. Recommendations for the selection and treatment of patients with IIH with VSS are outlined as determined based on author opinion from supporting studies. Due to the lack of randomized trials and few published prospective studies, standard grading scales for recommendations and level of evidence are not fully applicable and therefore a revised grading scale has been provided for recommendations.ResultsThe literature review identified a total of eight systematic reviews or meta-analyses and 29 published patient series on VSS. Recommendations for patient selection for diagnostic catheter angiography, angiography procedural considerations, stenting procedural considerations, and retreatment are provided based on the literature. Recommendations that were considered strong included: performance of venous sinus manometry to assess candidacy for treatment prior to stenting; administration of antiplatelet agents prior to stenting and for a follow-up period of at least 3–6 months; performance of post-stenting manometry to confirm resolution of pressure gradient; and performance of repeat angiography and manometry on patients with recurrence of symptoms after resolution with stenting to evaluate for recurrent stenosis.ConclusionVSS for patients with IIH with venous sinus stenosis is now an established and effective treatment option. These recommendations have been provided, based on a summative review of the available published literature, to assist in standardizing care for patients with IIH undergoing VSS.
Exposure to tobacco in video games and smoking among gamers in Argentina
Authors: Pérez Adriana , Thrasher James , Cabrera Noelia , Forsyth Susan , Peña Lorena , Sargent James D , Mejía Raúl 
Published: July 2018

BackgroundOur objective was to assess whether exposure to tobacco in video games is associated with smoking among adolescent gamers from Argentina.MethodsCross-sectional data were analysed from students in public and private middle schools in Argentina. Tobacco content in video games was estimated using previously validated methods and adolescents’ tobacco exposure was assessed by multiplying tobacco content in the top three video games they play by the hours played per day. The primary outcome was current smoking. Multilevel logistic regression models adjusted for clustering within schools, regressing current smoking on tobacco exposure in video games (ie, none, low, high) after controlling for age, sex, parental education, parenting style, parental rules about the use of video games, rebelliousness, sensation seeking and ‘technophilia’.ResultsOf the 3114 students who participated, 92% of boys (1685/1802) and 56% of girls (737/1312) played video games and were included in the analytical sample. The prevalence of smoking was 13.8% among boys and 22.0% among girls; 74.5% of boys played video games more than 1 hour per day compared with 47.7% of girls. High exposure to tobacco content in video games compared with no exposure was independently associated with current smoking among girls (OR 1.78; 95% CI 1.02 to 3.09) but not among boys (OR 0.98; 95% CI 0.64 to 1.51).ConclusionsGreater exposure to tobacco content in video games was associated with higher likelihood of smoking among Argentine girls who play video games, suggesting the need for policies that limit these exposures.
Self-normalized asymptotic properties for the parameter estimation in fractional Ornstein–Uhlenbeck process
Authors: Jiang Hui , Liu Junfeng , Wang Shaochen 
Published: July 2018

In this paper, we consider the self-normalized asymptotic properties of the parameter estimators in the fractional Ornstein–Uhlenbeck process. The deviation inequalities, Cramér-type moderate deviations and Berry–Esseen bounds are obtained. The main methods include the deviation inequalities and moderate deviations for multiple Wiener–Itô integrals [P. Major, Tail behavior of multiple integrals and U-statistics, Probab. Surv. 2 (2005) 448–505; On a multivariate version of Bernsteins inequality, Electron. J. Probab. 12 (2007) 966–988; M. Schulte and C. Thäle, Cumulants on Wiener chaos: Moderate deviations and the fourth moment theorem, J. Funct. Anal. 270 (2016) 2223–2248], as well as the Delta methods in large deviations [F. Q. Gao and X. Q. Zhao, Delta method in large deviations and moderate deviations for estimators, Ann. Statist. 39 (2011) 1211–1240]. For applications, we propose two test statistics which can be used to construct confidence intervals and rejection regions in the hypothesis testing for the drift coefficient. It is shown that the Type II errors tend to be zero exponential when using the proposed test statistics.
Absolutely split metacyclic groups and weak metacirculants
Authors: Cui Li , Zhou Jin-Xin 
Published: July 2018

Let [Formula: see text] be positive integers, and let [Formula: see text] be a split metacyclic group such that [Formula: see text]. We say that [Formula: see text] is absolutely split with respect to[Formula: see text] provided that for any [Formula: see text], if [Formula: see text], then there exists [Formula: see text] such that [Formula: see text] and [Formula: see text]. In this paper, we give a sufficient and necessary condition for the group [Formula: see text] being absolutely split. This generalizes a result of Sanming Zhou and the second author in [Weak metacirculants of odd prime power order, J. Comb. Theory A 155 (2018) 225–243]. We also use this result to investigate the relationship between metacirculants and weak metacirculants. Metacirculants were introduced by Alspach and Parsons in [Formula: see text] and have been a rich source of various topics since then. As a generalization of this class of graphs, Marušič and Šparl in 2008 introduced the so-called weak metacirculants. A graph is called a weak metacirculant if it has a vertex-transitive metacyclic automorphism group. In this paper, it is proved that a weak metacirculant of [Formula: see text]-power order is a metacirculant if and only if it has a vertex-transitive split metacyclic automorphism group. This provides a partial answer to an open question in the literature.