bluuebunny/crossref_metadata_2025_split huggingface dataset:
Periodontitis and Obesity: A Study of the Fourth Korean National Health and Nutrition Examination Survey
Authors: Kim Eun‐Jin , Jin Bo‐Hyoung , Bae Kwang‐Hak 
Published: November 2010

Background: The present study aims to determine whether there is an association between periodontitis and obesity among Korean adults who participated in the Fourth Korean National Health and Nutrition Examination Survey (KNHANES).Methods: In 2007, 4,246 subjects, >19 years of age, who participated in the KNHANES (a cross‐sectional survey conducted by the Korea Centers for Disease Control and Prevention) were selected for analysis. Participants underwent a periodontal examination and anthropometric measurements, and were asked to complete a questionnaire about their socioeconomic status and overall health status. Body mass index (BMI) and waist circumference (WC) were used as measures of overall body fat and upper body fat. Standard BMI and WC cutoff points were used, as established by the World Health Organization and the Korean Society for the Study of Obesity. Periodontal status was assessed by Community Periodontal Index and periodontitis was defined as ≥ “code 3.” Multivariate logistic regression analyses were carried out, adjusting for the following variables: sex; age; household income; bedtime toothbrushing habits; use of dental floss; use of an interproximal toothbrush; presence of active tooth decay; the number of decayed, missing, or filled permanent teeth; diabetes mellitus; and present smoking status.Results: In multivariate logistic regression analysis, there was no association between BMI and periodontitis. Obese people with BMI ≥25 had an adjusted odds ratio of 0.991 (0.806 to 1.220) for having periodontitis. But we found a significant association between abdominal obesity and periodontitis. After adjusting for all covariates, the adjusted odds ratio for periodontitis was 1.358 (confidence interval 1.003 to 1.839) for obese subjects.Conclusions: A high WC seems to be associated with periodontitis, whereas BMI does not. This finding shows that abdominal obesity is significantly correlated with periodontitis.
Interaction Between Periodontal Disease and Systemic Secondary Amyloidosis: From Inflammation to Amyloidosis
Authors: Cengiz Murat İnanç , Yayla Nazır , Cengiz Kuddusi , Bagci Hasan , Taşkın Emre 
Published: November 2010

Background: It has become increasingly clear in recent years that periodontal disease can cause a dramatic increase in the levels of markers of systemic inflammation, and that periodontal treatment can result in reduction in the levels of these markers. We have previously shown that the prevalence of moderate to severe periodontitis was significantly higher in patients with familial Mediterranean fever (FMF) with amyloidosis than in patients with FMF without amyloidosis. Thus, the aim of this study is to investigate if chronic periodontitis is associated with secondary amyloidosis in the Black Sea region of Turkey.Methods: A total of 112 patients with biopsy‐proven secondary amyloidosis (59 patients with FMF, 40 patients who were either chronically infected or had malignant disease, 13 patients with periodontitis) and 22 healthy subjects, were included in this study. Periodontal health and disease were evaluated using gingival index (GI), papillary bleeding index (PBI), plaque index (PI), and periodontal disease index (PDI). The concentrations of serum acute phase reactants (APRs) were measured at baseline and at 4 to 6 weeks after completion of the non‐surgical periodontal therapy.Results: The prevalence of moderate to severe periodontitis was 47.5% in patients with FMF, 72.5% in patients who were either chronically infected or had malignant disease, and 84.6% in patients with periodontitis. Serum levels of APRs in patients with amyloidosis were reduced significantly after non‐surgical periodontal therapy (P <0.01).Conclusions: Periodontitis can increase the levels of APRs and potentiate the development of amyloidosis either by themselves or association with traditional factors, such as FMF and other chronic inflammatory diseases. Thus, preventing or treating periodontitis might prevent or at least alleviate the progression of amyloidosis. Periodontal evaluation should be performed as part of a medical assessment and considered as an etiologic factor for secondary amyloidosis.
Driving Under the Influence of Our Fathers
Authors: Hjalmarsson Randi , Lindquist Matthew J. 
Published: November 2010

Abstract
This paper uses data from the Stockholm Birth Cohort Study to document intergenerational associations in drunk driving between fathers and their children. The proportion of sons with a record of drunk driving is 2.3 times larger for sons whose fathers have a conviction for drunk driving than for sons whose fathers have not been convicted. For daughters, the proportion is 7.8 times larger. The average number of convictions is twice as large for sons whose fathers have a conviction for drunk driving than for sons whose fathers have not been convicted. For daughters, the average number of convictions is 15.3 times larger. We argue that these intergenerational associations in drunk driving have important implications for treatment strategies and public policy.
Report of a Case Receiving Full‐Arch Rehabilitation in Both Jaws Using Immediate Implant Loading Protocols: A 1‐Year Resonance Frequency Analysis Follow‐Up
Authors: Portmann Michael , Glauser Roland 
Published: November 2010

ABSTRACTBackground:  Immediate occlusal implant loading has been documented as a viable treatment option for various indications. However, documentations related to full‐arch rehabilitation are usually limited to treatment of one jaw at a time, thereby leaving the opposing dentition unchanged. Furthermore, clinical documentation using traditional, well‐accepted measuring techniques may not be adequate when it comes to short‐term evaluation of the success or failure of implants subjected to immediate occlusal loading.Purpose:  The purpose of this case report is to (1) present an implant stability follow‐up of a patient receiving an immediate, implant‐supported full‐arch rehabilitation in both jaws and (2) evaluate the patient's acceptance of this rehabilitation.Materials and Methods:  A 68‐year‐old patient scheduled for implant treatment was selected for an immediate implant loading protocol in both jaws. During two surgical events 3 weeks apart, eight maxillary and four mandibular Brånemark System® Mk IV TiUniteTM fixtures (Nobel Biocare AB, Göteborg, Sweden) were inserted and subsequently used to immediately support a cross‐arch fixed prosthesis in the maxilla and a bar‐retained overdenture in the mandible. Implant stability was recorded from the day of surgery periodically during a 1‐year follow‐up using resonance frequency analysis (RFA).Results:  At the 1‐year follow‐up, based on clinical, RFA, and radiographic evaluations, all implants and the reconstructions were classified as successful. All maxillary implants showed a decrease in the implant stability quotient (ISQ) value from the measurement at the time of surgery to the first follow‐up, whereas two of four mandibular implants revealed an initial drop in stability. Irrespective of a specific ISQ level measured at implant surgery (ISQ range 53–74) and despite an initial decrease in stability, measurements recorded at the 12‐month follow‐up indicated similar stability levels for all maxillary implants (ISQ range 64–68) or the group of mandibular implants (ISQ range 72–75) but with a higher ISQ level for mandibular implants. Furthermore, the patient's acceptance of the immediate full‐arch rehabilitation in both jaws was high.Conclusions:  The present case report demonstrates that a slightly staged approach for full‐arch rehabilitation in both jaws using immediate implant loading protocols is a realistic treatment option. Furthermore, RFA follow‐up indicates that immediately occlusally loaded implants placed in reduced bone quality and quantity are more prone to loose stability in the early healing period compared with implants placed in dense bone quality.
Scalloped Dental Implants: A Retrospective Analysis of Radiographic and Clinical Outcomes of 17 NobelPerfectTM Implants in 6 Patients
Authors: Nowzari Hessam , Chee Winston , Yi Klaus , Pak Mark , Chung Woun Ho , Rich Sandra 
Published: November 2010

ABSTRACTBackground:  The scalloped dental implant (NobelPerfectTM, Nobel Biocare, Yorba Linda, CA, USA) is designed to biologically guide and facilitate interproximal bone remodeling during healing and to maintain bone height and papillae during functional loading. The design features of the scalloped implant include hard and soft tissue apposition areas, which are parallel to each other and mirror the cementoenamel junction. The hard tissue surface area is intended for osseointegration. The soft tissue surface area is meant to support the connective tissue zone and to provide a space for the subgingival margin of the restoration. Current literature on the clinical performance of the scalloped dental implant is limited.Purpose:  The aim of this study was to evaluate whether the scalloped dental implant maintains interproximal bone and the overlying soft tissue.Materials and Methods:  Radiographs for six patients (mean age 40.5 years) treated with 17 implants (NobelPerfect) were reviewed for an 18‐month follow‐up evaluation of bone response. Orthodontic movement and/or autogenous bone augmentation had been provided to obtain the best possible soft and hard tissue dimensions prior to implant placement. A surgical guide was used for an optimal implant placement. No surgical flap was reflected, and implants were placed a minimum of 2 mm and a maximum of 3 mm apical (midbuccally) to the most apical portion of the surgical guide. Final optimal rotational alignment was achieved in all cases by not exceeding 45 Ncm. Implants were immediately restored with provisional crowns. Photographic documentation provided the basis for analysis of papillary response. Radiographic change in the interproximal bone level was obtained by computer analysis (ImageJ for Windows, National Institutes of Health, Bethesda, MD) by measuring the distance from the interproximal shoulder of the scalloped implant to the crest of the bone.Results:  When the scalloped implants were placed adjacent to existing natural dentition, the average bone level at placement and at 6, 12, and 18 months was −1.7, −3.5, −3.8, and −3.9 mm, respectively, compared with −1.0, −3.6, −4.3, and −4.4 mm respectively, when placed adjacent to other scalloped implants. Papillae formation exhibited no differences from the configuration that typically results after placement of conventional dental implants. Moreover, bone loss around the scalloped implants was notably greater than that expected after traditional implant placement.Conclusion:  This chart review of 17 scalloped implants, followed for 18 months, determined that the scalloped implant design resulted in bone loss that was more severe than that associated with properly placed conventional dental implants. Further, the design showed no evidence of exceptional capacity to increase or maintain soft tissue height.
Alkaline hydrolysis of brilliant green in mixed cationic surfactant systems
Authors: Olanrewaju Owoyomi , Ige Jide , Omopariola Soriyan 
Published: November 2010

Abstract
Kinetic measurements were performed for the alkaline hydrolysis of brilliant green — a triphenylmethane dye used as a model compound for probing micellar rate effects. This reaction was studied both in the presence of tetradecyltrimethylammonium bromide (TTAB) and tetradecyltriphenylphosphonium bromide (TTPPBr) and also in binary mixtures of these surfactants at different mole fractions of each. All rate surfactant profiles were analyzed using the pseudo-phase model in order to obtain the regression parameters, including binding constants and rate constants in the micellar pseudo-phase. The reaction was catalyzed by both surfactants. The catalytic factor increases from about 10 for pure TTPPBr to about 38 for pure TTAB. Binding of BG to micellar surface is greater in pure TTAB than in pure TTPPBr but significantly reduced in the surfactant mixtures than in pure components. Reduction of the binding constant becomes more significant as the mole fraction of TTAB is increased in the mixture. The kinetic data have been analyzed in terms of models of Piszkiewicz and Raghavan-Srinivasan which are in good agreement.
Ascents of size less than d in compositions
Authors: Falah Maisoon , Mansour Toufik 
Published: November 2010

Abstract
A composition of a positive integer n is a finite sequence π1π2...πm of positive integers such that π1+...+πm = n. Let d be a fixed number. We say that we have an ascent of size d or more (respectively, less than d) if πi+1 ≥ πi+d (respectively, πi < πi+1 < πi + d). Recently, Brennan and Knopfmacher determined the mean, variance and limiting distribution of the number of ascents of size d or more in the set of compositions of n. In this paper, we find an explicit formula for the multi-variable generating function for the number of compositions of n according to the number of parts, ascents of size d or more, ascents of size less than d, descents and levels. Also, we extend the results of Brennan and Knopfmacher to the case of ascents of size less than d. More precisely, we determine the mean, variance and limiting distribution of the number of ascents of size less than d in the set of compositions of n.
Model of discrete dynamics of asset price relations based on the minimal arbitrage principle
Authors: Kostanjčar Zvonko , Hengster-Movrić Kristian , Jeren Branko 
Published: November 2010

Abstract
In this paper we present a deterministic and a probabilistic model of the dynamics of the price relations for a number of assets on the market. The formalism is based on the asset space introduced in a theory by Illinski. We derive, from an action functional for the system of price relations in that space, the corresponding difference equations, which constitute the deterministic description. Furthermore, we obtain the probability density function of the probabilistic model of market dynamics from the same action functional. The deterministic solution corresponds to a geometric sequence for the interest, whereas the derived probability density describes the probability of the next value of the price relations in dependence on their prior value. The formalism is completely developed for systems (markets) with two and three assets, but exactly the same approach is applicable to the systems consisting of an arbitrary number of assets.
Ab initio calculations of the atomic and electronic structure of MgF2 (011) and (111) surfaces
Authors: Vassilyeva Anna , Eglitis Robert , Kotomin Eugene , Dauletbekova Alma 
Published: November 2010

Abstract
The results of ab initio slab calculations of surface relaxations, rumplings and charge distribution for the different terminations of the MgF2 (011) and (111) polar surfaces are presented and discussed. We have employed the computer code CRYSTAL with the Gaussian basis set and the hybrid B3PW exchange-correlation functional. Despite the ionic nature of the chemical bonding at both surfaces, a considerable decrease of the optical band gap is predicted (1.3 eV or 10%) for the (111) surface as compared to the bulk.
Kinetic of monocytes Fcγ receptors in patients after coronary artery bypass
Authors: Andreeva Hristina , Lundemoen Steinar , Greve Godfrid , Haaverstad Rune , Fjaertoft Gustav 
Published: November 2010

Abstract
Cardiopulmonary bypass is usually associated with an increased risk of post-operative infections and systemic inflammatory response syndrome. This is accompanied by a neutrophil leucocytosis and lymphopenia. Less is known about the role of monocytes and markers of monocyte activity. This study focuses on the changes of Fc-gamma receptors on monocytes in patients undergoing on-pump coronary artery bypass grafting (CABG).The surface expression of CD64, CD32 and CD16 were studied using flow cytometry in 37 patients scheduled for CABG. The antigen density and the percentage positive cells were monitored preoperatively and on day 1, 2, 3 and 7 postoperatively. CD64 and CD32 antigen density were significantly increased from day 1 to day 7(p<0.0001). A significant increase (p<0.0001) in the percentage CD16+ monocytes was detected at day 1,2,and 3. The downregulation of CD16 expression on day 1 was followed be elevation at days 2,3(p<0.01). On day 7th percentage CD16+ monocytes and density were not returned to baseline values. Only the baseline levels of CD64 was lower compared to controls(p<0.05). The results suggest that on-pump CABG induces dynamic changes in the expression of Fc-gamma receptors on monocytes as late as 7 days. We observed significant upregulation in the expression of CD64 and CD32 and “to phases” distribution of CD16 in the post-CABG period.
Are we underestimating the frequency of malpositioned central venous catheters inserted via the left internal jugular vein? A case report and short review of literature
Authors: Ikonić Nada , Uvelin Arsen , Hajduković Danica , Kolak Radmila , Jokić-Divljak Dragana 
Published: November 2010

Abstract
Central venous cannulation is a widely used procedure in clinical medicine. Central venous catheters are inserted most often via the internal jugular and subclavian veins. One of the complications is malpositioning of the catheter, and some insertion sites carry a higher risk for that occurrence. We report a case of a malpositioned central venous catheter inserted via the left internal jugular vein in a patient with a ruptured diaphragm. Our objectives were to review the venous anatomy of the chest and the literature reporting malpositioned central venous catheters and to discuss the approach through the left internal jugular vein. Left internal jugular cannulation could carry a higher rate of malposition than reported, and anatomy gives a possible, simple answer. Contrast enhancement, although central venous catheters are radiopaque, is helpful when an approach through the left internal jugular vein is used and difficulties are encountered during insertion.
Predicting retention indices of aliphatic hydrocarbons on stationary phases modified with metallocyclams using quantitative structure-retention relationships
Authors: Bielecki Patryk , Wasiak Wiesław 
Published: November 2010

AbstractThe quantitative structure-retention relationship (QSRR) was used to predict Kováts retention indices of forty-three volatile olefins on the chemically bonded stationary phase, containing 1,4,8,11-tetraazacycloteradecane (cyclam) complexes of copper(II) chloride. Retention indices were correlated with eleven descriptors derived from structures of olefins optimised using the molecular mechanics force field calculations (MM2). Descriptors were generated with the use of quantitative structure-activity relationships (QSAR), semi-empirical Austin Model 1 methods (AM1), and obtained from physicochemical databases. Five well-correlated models were built, with predictive coefficients of determination (R 2) values of 0.993 and 0.995. The dielectric energy (DE) descriptor was identified as being as important as the polarizability (P) descriptor in the process of separation of unsaturated olefins on stationary phases containing metal complexes. The DE index proved to be decisive in distinguishing between the geometric cis and trans isomers of the tested compounds.
The ILRS EOP Time Series
Authors: Sciarretta C. , Luceri V. , Pavlis E. , Bianco G. 
Published: November 2010

The ILRS EOP Time Series
Since 2004, ILRS has been providing on a weekly basis combined SSC/EOP solutions from 7-day arcs to support IERS for EOP computation and reference frame maintenance. At present, eight Analysis Centers and two Combination Centers contribute to the weekly official ILRS combined solution from which the main SLR contribution to the IERS EOP reference series is derived. The most recent work performed jointly by all ILRS Analysis Centers (AC) was the generation of a contribution to the next ITRF, extending the time-span coverage of the 7-day arcs combined solution to 1983-2008. In another effort we try to improve the ILRS products' latency and to minimize the delay of the SLR contribution to the IERS EOP estimation, by increasing the product generation frequency (pre-operational daily product), to once per day.
Russian State Time and Earth Rotation Service: Observations, Eop Series, Prediction
Authors: Kaufman M. , Pasynok S. 
Published: November 2010

Russian State Time and Earth Rotation Service: Observations, Eop Series, Prediction
Russian State Time, Frequency and Earth Rotation Service provides the official EOP data and time for use in scientific, technical and metrological works in Russia. The observations of GLONASS and GPS on 30 stations in Russia, and also the Russian and worldwide observations data of VLBI (35 stations) and SLR (20 stations) are used now. To these three series of EOP the data calculated in two other Russian analysis centers are added: IAA (VLBI, GPS and SLR series) and MCC (SLR). Joint processing of these 7 series is carried out every day (the operational EOP data for the last day and the predicted values for 50 days). The EOP values are weekly refined and systematic errors of every individual series are corrected. The combined results become accessible on the VNIIFTRI server (ftp.imvp.ru) approximately at 6h UT daily.
Employing Combination Procedures to Short-Time Eop Prediction
Authors: Malkin Z. 
Published: November 2010

Employing Combination Procedures to Short-Time Eop Prediction
A well known problem with Earth Orientation Parameters (EOP) prediction is that a prediction strategy proved to be the best for some testing time span and prediction length may not remain the same for other time intervals. In this paper, we consider possible strategies to combine EOP predictions computed using different analysis techniques to obtain a final prediction with the best accuracy corresponding to the smallest prediction error of input predictions. It was found that this approach is most efficient for ultra-short-term EOP forecast.
Future of Earth Orientation Predictions
Authors: Luzum B. 
Published: November 2010

Future of Earth Orientation Predictions
Earth orientation prediction has undergone a number of changes over the last few decades in response to changing conditions in the Earth orientation parameter user community. However, considering the recent pace of change, it is likely that the rate at which innovations are introduced into the prediction process will increase. Potential drivers for change are discussed and possible directions for change are outlined.