bluuebunny/crossref_metadata_2025 huggingface dataset:
Long-term Survival Rates of Implants Supporting Overdentures
Authors: Balaguer José , Ata-Ali Javier , Peñarrocha-Oltra David , García Berta , Peñarrocha-Diago María
Published: June 2013

The study aims were to evaluate survival rates of dental implants in patients wearing maxillary and mandibular overdentures in relation to age, sex, smoking, implant splinting or non-splinting, the maxilla rehabilitated, and number of implants per dental arch. This was a prospective study of patients who were completely edentulous in either mandible or maxilla or both, rehabilitated with implant-retained overdentures, with a follow-up of at least 3 years. 95 patients with 107 overdentures were supported by 360 implants were included in the study. Rehabilitations were monitored over an average of 95 ± 20.3 months (range 36–159). Implant survival in the maxilla was 91.9% and in the mandible 98.6%, representing a statistically significant difference (P < .05). Age, sex and implant splinting did not influence survival rates significantly. Smokers presented a lower survival rate. Implant numbers in the maxilla had a significant influence on survival, 100% for 6 but 85.7% for 4. Three mandibular implants achieved higher survival rates (100%) but with 2 (96.6%) or 4 (99%) survival was lower, although without significant difference. Long-term results suggest that 3-implant mandibular overdentures have an equivalent survival rate to 4-implant overdentures. In the maxilla, results showed that 6 implants may be the best treatment strategy. For smokers with fewer implants retaining the overdentures, there were higher numbers of implant failures.
Stress Distribution Around Osseointegrated Implants With Different Internal-Cone Connections: Photoelastic and Finite Element Analysis
Authors: Anami Lilian Costa , da Costa Lima Júlia Magalhães , Takahashi Fernando Eidi , Neisser Maximiliano Piero , Noritomi Pedro Yoshito , Bottino Marco Antonio
Published: June 2013

The goal of this study was to evaluate the distribution of stresses generated around implants with different internal-cone abutments by photoelastic (PA) and finite element analysis (FEA). For FEA, implant and abutments with different internal-cone connections (H- hexagonal and S- solid) were scanned, 3D meshes were modeled and objects were loaded with computer software. Trabecular and cortical bones and photoelastic resin blocks were simulated. The PA was performed with photoelastic resin blocks where implants were included and different abutments were bolted. Specimens were observed in the circular polariscope with the application device attached, where loads were applied on same conditions as FEA. FEA images showed very similar stress distribution between two models with different abutments. Differences were observed between stress distribution in bone and resin blocks; PA images resembled those obtained on resin block FEA. PA images were also quantitatively analyzed by comparing the values assigned to fringes. It was observed that S abutment distributes loads more evenly to bone adjacent to an implant when compared to H abutment, for both analysis methods used. It was observed that the PA has generated very similar results to those obtained in FEA with the resin block.
Inspection sampling of pitting corrosion
Authors: Khalifa M , Khan F , Haddara M
Published: June 2013

The objective of this paper is to estimate the sample size required to assess the maximum pit size over an entire asset that is subject to pitting corrosion. The Bayesian updating approach and the extreme value method are integrated into a single proposed framework to estimate the
sample size. The extreme value method is used to predict the maximum pit size by extrapolating the inspected area (sample) to the entire asset's area. The Bayesian updating approach is used to update prior information obtained from the previous inspection once newly obtained information is
available from the current inspection. The estimated sample size ensures that the predicted maximum pit size over the entire asset is within an acceptable margin of error at a specified confidence level. Using the proposed framework, two closed-form formulae are developed for calculating
the sample size required to assess pitting corrosion. The two formulae address the two situations when prior information is either available or unavailable. These formulae are compared to the classical method for calculating the sample size through a case study of a pipeline subject to pitting
corrosion. The comparison shows that the sample size estimated with the classical method is not large enough to assess the maximum pit size over the entire pipeline.
Simulation studies for optimisation of phased array parameters for examination of roll-joints in pressurised heavy water reactor coolant channels
Authors: Nanekar P P , Jothilakshmi N , Jayakumar T
Published: June 2013

The roll-joint area in the pressure tubes of pressurised heavy water reactors (PHWRs) is prone to delayed hydride cracking (DHC). This region is monitored during in-service inspection to avoid any catastrophic failure. The in-service inspection involves ultrasonic angle beam examination
using a single-crystal high-frequency immersion probe. The inspection is limited to a region of 30-40 mm just ahead of the roll-joint where DHC is expected to occur. An ultrasonic phased array technique has been developed to replace the conventional approach. Using phased array, it is possible
to examine the roll-joint region for DHC in a single rotation of the inspection head without axial movement. As a result, there is a huge saving in the inspection time. Moreover, the focusing of the sound beam provided by the phased array helps to achieve enhanced sensitivity and resolution.
This paper describes the simulation studies carried out for optimisation of the aperture size and focal laws for the phased array examination of the roll-joints of coolant channels of PHWRs. The results of the simulation are validated by carrying out experiments on a sample piece with reference
EDM notches 6 mm long, 0.2 mm wide and 0.15 mm deep.
A large herbivore triggers alternative successional trajectories in the boreal forest
Authors: Hidding Bert , Tremblay Jean-Pierre , Côté Steeve D.
Published: June 2013

Alternative successional trajectories (AST) may result in multiple climax states within an ecosystem when disturbances affect colonization history. In the boreal forest, ungulates have been proposed to drive AST because, under herbivore pressure, preferred species may go extinct and apparent competition may benefit browsing‐resistant species. Over a 15‐year period following logging, we tested whether deer herbivory altered plant species composition and whether the competitive advantage of resistant species was maintained following herbivore removal. We compared exclosures built immediately after logging with delayed exclosures built eight years later on Anticosti Island, Quebec, Canada. Although the palatable tree Betula papyrifera (paper birch) and some palatable herbs recovered in delayed exclosures, we observed legacies in both tree and herb cover. Woody regeneration in delayed exclosures was dominated by Picea glauca (white spruce), and Poaceae (grasses) were abundant in the field layer. Given that only early‐successional species recovered, whereas late‐successional broadleaf species and Abies balsamea (balsam fir) remained rare, succession may follow an AST after a limited browsing period during early succession.
Mucogingival Volumetric Changes After Root Coverage With Acellular Dermal Matrix: A Case Report
Authors: Clozza Emanuele , Suzuki Takanori , Kye Wayne , Horowitz Robert A. , Engebretson Steven P.
Published: June 2013

Introduction: Monitoring mucogingival changes after treatment is of great interest for clinicians and researchers.

Case Presentation: A 30‐year‐old non‐smoking male who exhibited multiple adjacent teeth with Miller Class I gingival recession in the esthetic zone underwent a root‐coverage procedure with an acellular dermal matrix graft. Dental stone casts of the maxilla were fabricated from impressions taken at baseline and 6 months after surgery. Subsequently, the entire surfaces of the casts were digitally captured with a three‐dimensional laser scanner. Virtual measurements were performed on superimposed casts to assess mucogingival changes during the 6‐month period. Complete resolution of gingival recessions was observed in all the treated sites, along with an overall increased thickness of mucosal tissues.

Conclusion: Within the limitations of this case report, the proposed method may be promising for the evaluation of the outcome of root coverage and identifying biotype conversion.
Sixth order differential operators with eigenvalue dependent boundary conditions
Authors: Möller Manfred , Zinsou Bertin
Published: June 2013

We consider eigenvalue problems for sixth-order ordinary differential
equations. Such differential equations occur in mathematical models of
vibrations of curved arches. With suitably chosen eigenvalue dependent
boundary conditions, the problem is realized by a quadratic operator pencil.
It is shown that the operators in this pencil are self-adjoint, and that the
spectrum of the pencil consists of eigenvalues of finite multiplicity in the
closed upper half-plane, except for finitely many eigenvalues on the
negative imaginary axis.
A Non-Oxidative Approach Towards Hybrid Silicon Nanowire- Based Solar Cell Heterojunctions
Authors: Bashouti Muhammad Y. , Ristein Jürgen , Haick Hossam , Christiansen Silke
Published: June 2013

A general method for the non-oxidative termination of silicon nanowires (Si NWs) is reviewed. Oxide-free Si NW have been successfully alkylated in the lab using a two-step chlorination/alkylation process. The distinctive properties of the resulting Si NW have been taken advantage of by integrating the Si NWs into functional devices such as solar cells. Moreover, molecularly terminated Si NWs exhibit lower defect density emissions than unmodified Si NWs. This, in part, explains the better performance of the molecularly terminated Si NW-based solar cells. Solar cells that use organic-inorganic hybrid Si NWs as absorbers show an increased open-circuit voltage (V
Discrimination within Recognition Memory in Schizophrenia
Authors: McGuire Kathryn , Blahnik Melanie , Sponheim Scott
Published: June 2013

Episodic memory is one of the most affected cognitive domains in schizophrenia. First-degree biological relatives of individuals with schizophrenia also have been found to exhibit a similar, but milder, episodic memory deficit. Unlike most studies that focus on the percent of previously presented items recognized, the current investigation sought to further elucidate the nature of memory dysfunction associated with schizophrenia by examining the discrimination of old and new material during recognition (measured by d') to consider false recognition of new items. Using the Recurring Figures Test and the California Verbal Learning Test (CVLT), we studied a sample of schizophrenia probands and the first-degree biological relatives of patients with schizophrenia, as well as probands with bipolar disorder and first-degree biological relatives to assess the specificity of recognition memory dysfunction to schizophrenia. The schizophrenia sample had poorer recognition discrimination in both nonverbal and verbal modalities; no such deficits were identified in first-degree biological relatives or bipolar disorder probands. Discrimination in schizophrenia and bipolar probands failed to benefit from the geometric structure in the designs in the manner that controls did on the nonverbal test. Females performed better than males in recognition of geometric designs. Episodic memory dysfunction in schizophrenia is present for a variety of stimulus domains and reflects poor use of item content to increase discrimination of old and new items.
Vessel Pattern Knowledge Discovery from AIS Data: A Framework for Anomaly Detection and Route Prediction
Authors: Pallotta Giuliana , Vespe Michele , Bryan Karna
Published: June 2013

Understanding maritime traffic patterns is key to Maritime Situational Awareness applications, in particular, to classify and predict activities. Facilitated by the recent build-up of terrestrial networks and satellite constellations of Automatic Identification System (AIS) receivers, ship movement information is becoming increasingly available, both in coastal areas and open waters. The resulting amount of information is increasingly overwhelming to human operators, requiring the aid of automatic processing to synthesize the behaviors of interest in a clear and effective way. Although AIS data are only legally required for larger vessels, their use is growing, and they can be effectively used to infer different levels of contextual information, from the characterization of ports and off-shore platforms to spatial and temporal distributions of routes. An unsupervised and incremental learning approach to the extraction of maritime movement patterns is presented here to convert from raw data to information supporting decisions. This is a basis for automatically detecting anomalies and projecting current trajectories and patterns into the future. The proposed methodology, called TREAD (Traffic Route Extraction and Anomaly Detection) was developed for different levels of intermittency (i.e., sensor coverage and performance), persistence (i.e., time lag between subsequent observations) and data sources (i.e., ground-based and space-based receivers).
An Entropy-Based Weighted Concept Lattice for Merging Multi-Source Geo-Ontologies
Authors: Li Junli , He Zongyi , Zhu Qiaoli
Published: June 2013

To deal with the complexities associated with the rapid growth in a merged concept lattice, a formal method based on an entropy-based weighted concept lattice (EWCL) is proposed as a mechanism for merging multi-source geographic ontologies (geo-ontologies). First, formal concept analysis (FCA) is used to formalize different term-based representations in relation to the geographic domain, and to construct a merged formal context. Second, a weighted concept lattice (WCL) is applied to reduce the merged concept lattice, based on information entropy and a deviance analysis. The entropy of the attribute set is exploited to acquire the intent weight value, and the standard deviation contributes to computing the intent importance deviance value, according to the user preferences and interests. Some nodes of the merged concept lattice are then removed if their intent weights are lower than the intent importance thresholds specified by the user. Finally, experiments were conducted by combining fundamental geographic information data and spatial data in the hydraulic engineering domain from China. The results indicate that the proposed method is feasible and valid for reducing the complexities associated with the merging of geo-ontologies. Although there are still some problems in the application, the manuscript offers a new approach for the merging of geo-ontologies.
Entropy of Shortest Distance (ESD) as Pore Detector and Pore-Shape Classifier
Authors: Korvin Gabor , Sterligov Boris , Oleschko Klaudia , Cherkasov Sergey
Published: June 2013

The entropy of shortest distance (ESD) between geographic elements (“elliptical intrusions”, “lineaments”, “points”) on a map, or between "vugs", "fractures" and "pores" in the macro- or microscopic images of triple porosity naturally fractured vuggy carbonates provides a powerful new tool for the digital processing, analysis, classification and space/time distribution prognostic of mineral resources as well as the void space in carbonates, and in other rocks. The procedure is applicable at all scales, from outcrop photos, FMI, UBI, USI (geophysical imaging techniques) to micrographs, as we shall illustrate through some examples. Out of the possible applications of the ESD concept, we discuss in details the sliding window entropy filtering for nonlinear pore boundary enhancement, and propose this procedure as unbiased thresholding technique.
Public Place Smoke-Free Regulations, Secondhand Smoke Exposure and Related Beliefs, Awareness, Attitudes, and Practices among Chinese Urban Residents
Authors: Yang Tingzhong , Abdullah Abu , Li Li , Rockett Ian , Lin Yan , Ying Jun , Guo Wei , Wu Dan , Li Mu
Published: June 2013

Objective: To evaluate the association between smoke-free regulations in public places and secondhand smoke exposure and related beliefs, awareness, attitudes, and behavior among urban residents in China. Methods: We selected one city (Hangzhou) as the intervention city and another (Jiaxing) as the comparison. A structured self-administered questionnaire was used for data collection, and implemented at two time points across a 20-month interval. Both unadjusted and adjusted logistic methods were considered in analyses. Multiple regression procedures were performed in examining variation between final and baseline measures. Results: Smoke-free regulations in the intervention city were associated with a significant decline in personal secondhand smoke exposure in government buildings, buses or taxis, and restaurants, but there was no change in such exposure in healthcare facilities and schools. In terms of personal smoking beliefs, awareness, attitudes, and practices, the only significant change was in giving quitting advice to proximal family members. Conclusions: There was a statistically significant association between implementation of smoke-free regulations in a city and inhibition of secondhand tobacco smoking exposure in public places. However, any such impact was limited. Effective tobacco control in China will require a combination of strong public health education and enforcement of regulations.
Density Functional Theory (DFT) Study of Coumarin-based Dyes Adsorbed on TiO2 Nanoclusters—Applications to Dye-Sensitized Solar Cells
Authors: Oprea Corneliu , Panait Petre , Cimpoesu Fanica , Ferbinteanu Marilena , Gîrţu Mihai
Published: June 2013

Coumarin-based dyes have been successfully used in dye-sensitized solar cells, leading to photovoltaic conversion efficiencies of up to about 8%. Given the need to better understand the behavior of the dye adsorbed on the TiO2 nanoparticle, we report results of density functional theory (DFT) and time-dependent DFT (TD-DFT) studies of several coumarin-based dyes, as well as complex systems consisting of the dye bound to a TiO2 cluster. We provide the electronic structure and simulated UV-Vis spectra of the dyes alone and adsorbed to the cluster and discuss the matching with the solar spectrum. We display the energy level diagrams and the electron density of the key molecular orbitals and analyze the electron transfer from the dye to the oxide. Finally, we compare our theoretical results with the experimental data available and discuss the key issues that influence the device performance.
Fucoidan Derived from Undaria pinnatifida Induces Apoptosis in Human Hepatocellular Carcinoma SMMC-7721 Cells via the ROS-Mediated Mitochondrial Pathway
Authors: Yang Lili , Wang Peisheng , Wang Huaxin , Li Qiaomei , Teng Hongming , Liu Zhichao , Yang Wenbo , Hou Lin , Zou Xiangyang
Published: June 2013

Fucoidans, fucose-enriched sulfated polysaccharides isolated from brown algae and marine invertebrates, have been shown to exert anticancer activity in several types of human cancer, including leukemia and breast cancer and in lung adenocarcinoma cells. In the present study, the anticancer activity of the fucoidan extracted from the brown seaweed Undaria pinnatifida was investigated in human hepatocellular carcinoma SMMC-7721 cells, and the underlying mechanisms of action were investigated. SMMC-7721 cells exposed to fucoidan displayed growth inhibition and several typical features of apoptotic cells, such as chromatin condensation and marginalization, a decrease in the number of mitochondria, and in mitochondrial swelling and vacuolation. Fucoidan-induced cell death was associated with depletion of reduced glutathione (GSH), accumulation of high intracellular levels of reactive oxygen species (ROS), and accompanied by damage to the mitochondrial ultrastructure, depolarization of the mitochondrial membrane potential (MMP, Δψm) and caspase activation. Moreover, fucoidan led to altered expression of factors related to apoptosis, including downregulating Livin and XIAP mRNA, which are members of the inhibitor of apoptotic protein (IAP) family, and increased the Bax-to-Bcl-2 ratio. These findings suggest that fucoidan isolated from U. pinnatifida induced apoptosis in SMMC-7721 cells via the ROS-mediated mitochondrial pathway.
Arylsulfonylamino-Benzanilides as Inhibitors of the Apical Sodium-Dependent Bile Salt Transporter (SLC10A2)
Authors: Liu Hong-Tao , He Hong-Wei , Bai Xiao-Guang , Wang Ju-Xian , Xu Chang-Liang , Cai Shi-Ying , Shao Rong-Guang , Wang Yu-Cheng
Published: June 2013

The apical sodium-dependent bile salt transporter (ASBT) plays a pivotal role in maintaining bile acid homeostasis. Inhibition of ASBT would reduce bile acid pool size and lower cholesterol levels. In this report, a series of novel arylsulfonylaminobenzanilides were designed and synthesized as potential inhibitors of ASBT. Most of them demonstrated great potency against ASBT’s bile acid transport activity. In particular, compound 5g2 inhibited ASBT activity with an IC50 value of 0.11 μM. These compounds represent potential cholesterol-lowering drugs.
Dihydrochalcones with Antiinflammatory Activity from Leaves and Twigs of Cyathostemma argenteum
Authors: Somsrisa Jariya , Meepowpan Puttinan , Krachodnok Samroeng , Thaisuchat Haruthai , Punyanitya Sittiporn , Nantasaen Narong , Pompimon Wilart
Published: June 2013

A new dihydrochalcone derivative, 4',6'-dihydroxy-2',4-dimethoxy-5'-(2''-hydroxybenzyl)dihydrochalcone (1) and one known dihydrochalcone, 4',6'-dihydroxy-2',4- dimethoxydihydrochalcone (2) were isolated from leaves and twigs of Cyathostemma argenteum. Their structures were established by spectral methods, mainly 2D NMR spectroscopic techniques, which involved combined applications of DEPT, COSY, HMQC and HMBC. The molecular structure of 1 was also confirmed by single crystal X-ray diffraction. The test compounds 1 and 2 displayed signiﬁcant inhibitory activity at a dose of 1 mg/ear on edema formation at all determination times, with similar intensity as phenylbutazone.
Flavonoids and Asthma
Authors: Tanaka Toshio , Takahashi Ryo
Published: June 2013

Asthma is a chronic disease, characterized by airway inflammation, airflow limitation, hyper-reactivity and airway remodeling. It is believed that asthma is caused by the interaction between genetic and environmental factors. The prevalence of allergic diseases, including asthma, has increased worldwide during the past two decades. Although the precise reasons that have caused this increase remain unknown, dietary change is thought to be one of the environmental factors. Flavonoids, which are polyphenolic plant secondary metabolites ubiquitously present in vegetables, fruits and beverages, possess antioxidant and anti-allergic traits, as well as immune-modulating activities. Flavonoids are powerful antioxidants and anti-allergic nutrients that inhibit the release of chemical mediators, synthesis of Th2 type cytokines, such as interleukin (IL)-4 and IL-13, and CD40 ligand expression by high-affinity immunoglobulin E (IgE) receptor-expressing cells, such as mast cells and basophils. They also inhibit IL-4-induced signal transduction and affect the differentiation of naïve CD4+ T cells into effector T-cells through their inhibitory effect on the activation of the aryl hydrocarbon receptor. Various studies of flavonoids in asthmatic animal models have demonstrated their beneficial effects. The results of several epidemiological studies suggest that an increase in flavonoid intake is beneficial for asthma. Moreover, clinical trials of flavonoids have shown their ameliorative effects on symptoms related to asthma. However, these human studies are currently limited; further validation is required to clarify whether an appropriate intake of flavonoids may constitute dietary treatment and for part of a preventive strategy for asthma.
Impact of Short Term Consumption of Diets High in Either Non-Starch Polysaccharides or Resistant Starch in Comparison with Moderate Weight Loss on Indices of Insulin Sensitivity in Subjects with Metabolic Syndrome
Authors: Lobley Gerald , Holtrop Grietje , Bremner David , Calder A. , Milne Eric , Johnstone Alexandra
Published: June 2013

This study investigated if additional non-starch polysaccharide (NSP) or resistant starch (RS), above that currently recommended, leads to better improvement in insulin sensitivity (IS) than observed with modest weight loss (WL). Obese male volunteers (n = 14) were given an energy-maintenance (M) diet containing 27 g NSP and 5 g RS daily for one week. They then received, in a cross-over design, energy-maintenance intakes of either an NSP-enriched diet (42 g NSP, 2.5 g RS) or an RS-enriched diet (16 g NSP, 25 g RS), each for three weeks. Finally, a high protein (30% calories) WL diet was provided at 8 MJ/day for three weeks. During each dietary intervention, endogenous glucose production (EGP) and IS were assessed. Fasting glycaemia was unaltered by diet, but plasma insulin and C-peptide both decreased with the WL diet (p < 0.001), as did EGP (−11%, p = 0.006). Homeostatis model assessment of insulin resistance improved following both WL (p < 0.001) and RS (p < 0.05) diets. Peripheral tissue IS improved only with WL (57%–83%, p < 0.005). Inclusion of additional RS or NSP above amounts currently recommended resulted in little or no improvement in glycaemic control, whereas moderate WL (approximately 3 kg fat) improved IS.
Effect of Systems to Manage Environmental Aspects on Environmental Performance
Authors: Earnhart Dietrich
Published: June 2013

This paper analyzes the effect of systems to manage environmental aspects on environmental performance at individual polluting facilities. Regulated polluting facilities are increasingly embracing pollution minimization strategies that involve the adoption of broadly defined systems to manage environmental aspects. Despite a meaningful empirical literature, whether or not these systems lead to better environmental performance remains an open question. This study seeks to assess the possible connection between systems to manage environmental aspects and improved environmental performance. It also seeks to identify the factors determining the extent of the adopted system of management and the factors’ direct effects on environmental performance. For this empirical analysis, the study examines the extent of systems to manage environmental aspects employed by and the level of wastewater discharged by U.S. chemical manufacturing facilities during 2001.
The Bioeconomy in Europe: An Overview
Authors: McCormick Kes , Kautto Niina
Published: June 2013

A bioeconomy can be defined as an economy where the basic building blocks for materials, chemicals and energy are derived from renewable biological resources. This paper provides an overview of the bioeconomy in Europe, examining it from a policy framework and concept perspective. The role of bioenergy in the bioeconomy is discussed particularly through biofuels for transport and biorefineries. The study finds that the definitions of the bioeconomy are evolving and vary depending on the actor, but display similarities such as the emphasis on economic output and a broad, cross-sectoral focus. While there is great optimism about the benefits and opportunities associated with developing an advanced bioeconomy in Europe, significant risks and trade-offs are also expressed. Furthermore, the bioeconomy concept has been criticised for presenting a technical fix and pre-empting alternative visions. To advance a competitive and sustainable bioeconomy, this paper calls for attention on two important themes: participatory governance that engages the general public and key stakeholders in an open and informed dialogue as well as a commitment by government and industry to innovation that drives concerted efforts on sustainable development of the bioeconomy.
Psychological barriers and facilitators of colorectal cancer screening: a French qualitative study
Authors: Bridou Morgiane , Aguerre Colette , Gimenes Guillaume , Kubiszewski Violaine , Le Gall Armel , Potard Catherine , Sorel Olivier , Reveillere Christian
Published: June 2013

The aim of this qualitative study was to explore the psychological barriers to and facilitators of undergoing the Hemoccult-II® colorectal cancer screening test in France. Sixty-nine French people aged 50 to 74 years were divided into seven qualitative focus groups. Three issues were discussed with participants: knowledge and beliefs about colorectal cancer screening; facilitators of colorectal cancer screening by Hemoccult-II®; barriers to colorectal cancer screening by Hemoccult-II®. All the discussions were led by two psychologists and were recorded, transcribed verbatim and analyzed using qualitative data analysis software. Correspondence factor analyses identified three dimensions for each topic. The main psychological facilitators of colorectal cancer screening were: information about colorectal cancer screening, perceived simplicity of using Hemoccult-II®, and perception of risk. Uncertainty about the reliability of Hemoccult-II®, health anxiety, and embarrassment emerged as the main barriers to colorectal cancer screening. Cross-sectional analyses identified the differences between the views expressed by women and men. Women appeared more embarrassed about Hemoccult-II® and men seemed to be more worried about colorectal cancer. This preliminary study suggests that psychological factors play an important role in colorectal cancer screening by Hemoccult-II®. This finding may help health organizations to conceive better awareness campaigns to promote colorectal cancer screening in order to reduce the related mortality rate by taking into account psychological determinants.
Perturbation and Solvability of Initial Lp Dirichlet Problems for Parabolic Equations over Non-cylindrical Domains
Authors: Rivera-Noriega Jorge
Published: June 2013

For parabolic linear operators L of second order in divergence form, we prove that the solvability of initial Lp Dirichlet problems for the whole range 1 < p < ∞ is preserved under appropriate small perturbations of the coefficients of the operators involved. We also prove that if the coefficients of L satisfy a suitable controlled oscillation in the form of Carleson measure conditions, then for certain values of p > 1, the initial Lp Dirichlet problem associated with Lu = 0 over non-cylindrical domains is solvable. The results are adequate adaptations of the corresponding results for elliptic equations.
A New External Landmark for Mental Foramen
Authors: Tungkeeratichai Jumroon , Bhongmakapat Thongchai , Saitongdee Porncharn , Orathai Pisamai
Published: June 2013

Purpose

The purpose of this study was to establish a new external landmark of mental foramen to help facilitate prediction of the location during local anesthesia and during surgery of mandibular region.

Materials and methods

One hundred and ten adult Thai cadavers of 61 males and 49 females from Department of Anatomy, Faculty of Science, Mahidol University were included in this study. The anatomy of mental foramen in 110 adult Thai cadavers (220 sides) was studied from 2008 until 2011. Measurements in vertical plane were made: (i) From gingival sulcus to mental foramen = A, (ii) from mental foramen to inferior border of mandible = B, and (iii) the ratio of A/A + B = D.

Measurements in horizontal plane were also made: (i) From symphysis menti to the mental foramen = S (in straight line and not related to mandibular curvature), and (ii) from symphysis menti to the mental foramen = C (in curved line related to mandibular curvature), and (iii) in relation to position of lower tooth/teeth, and (iv) in relation to cheilions (corners of the mouth).

Results

The results included 61 male and 49 female cadavers. On the right side, the proportion of A/A + B (D) of male and female was 0.50 and 0.46. On the left side, the proportion of A/A + B (D) of male and female was 0.50 and 0.46. The location of right and left cheilion was related with the position of mental foramen, mostly at center (male: 63.93 and 70.49%, female: 61.22 and 73.47%). If center ± 0.3 cm it was possible to find the mental foramen more easily than the point of the center (male: 95.08 and 91.80%, female: 87.76 and 93.88%). If center ± 0.5 cm, it could find the mental foramen more easily than the point of the center ± 0.3 cm (male: 98.36 and 98.36%, female: 95.92 and 97.96%).

Conclusion

The knowledge gained from this study is quite important, since it helps the surgeon to easily identify the mental foramen prior to surgery which is halfway between gingival sulcus and inferior border of mandible in vertical plane and at the cheilion position in horizontal plane.

How to cite this article

Tungkeeratichai J, Bhongmakapat T, Saitongdee P, Orathai P. A New External Landmark for Mental Foramen. Int J Otorhinolaryngol Clin 2013;5(1):29-33.
Estimate of surface direct radiative forcing of desert dust from atmospheric modulation of the aerosol optical depth
Authors: di Sarra A. , Fuà D. , Meloni D.
Published: June 2013

Abstract. Measurements carried out on the island of Lampedusa, in the central Mediterranean, on 7 September 2005, show the occurrence of a quasi-periodic oscillation of aerosol optical depth, column water vapour, and surface irradiance in different spectral bands. The oscillation has a period of about 13 min and is attributed to the propagation of a gravity wave able to modify the vertical structure of the planetary boundary layer, as also confirmed by satellite images. The wave occurred during a Saharan dust event. The oscillation amplitude is about 0.1 for the aerosol optical depth, and about 0.4 cm for the column water vapour. The modulation of the downward surface irradiances is in opposition of phase with respect to aerosol optical depth and water vapour column variations. The perturbation of the downward irradiance produced by the aerosols is determined by comparing the measured irradiances with estimated irradiances at a fixed value of the aerosol optical depth, and by correcting for the effect of the water vapour in the shortwave spectral range. The direct radiative forcing efficiency, i.e., the radiative perturbation of the net surface irradiance produced by a unit of optical depth aerosol layer, is determined at different solar zenith angles as the slope of the irradiance perturbation versus the aerosol optical depth. The estimated direct surface forcing efficiency at about 60° solar zenith angle is −(181 ± 17) W m−2 in the shortwave, and −(83 ± 7) W m−2 in the photosynthetic spectral range. The estimated daily average forcing efficiencies are of about −79 and −46 W m−2 for the shortwave and photosynthetic spectral range, respectively.
Megacity impacts on regional ozone formation: observations and WRF-Chem modeling for the MIRAGE-Shanghai field campaign
Authors: Tie X. , Geng F. , Guenther A. , Cao J. , Greenberg J. , Zhang R. , Apel E. , Li G. , Weinheimer A. , Chen J. , Cai C.
Published: June 2013

Abstract. The MIRAGE-Shanghai experiment was designed to characterize the factors controlling regional air pollution near a Chinese megacity (Shanghai) and was conducted during September 2009. This paper provides information on the measurements conducted for this study. In order to have some deep analysis of the measurements, a regional chemical/dynamical model (version 3 of Weather Research and Forecasting Chemical model – WRF-Chemv3) is applied for this study. The model results are intensively compared with the measurements to evaluate the model capability for calculating air pollutants in the Shanghai region, especially the chemical species related to ozone formation. The results show that the model is able to calculate the general distributions (the level and the variability) of air pollutants in the Shanghai region, and the differences between the model calculation and the measurement are mostly smaller than 30%, except the calculations of HONO (nitrous acid) at PD (Pudong) and CO (carbon monoxide) at DT (Dongtan). The main scientific focus is the study of ozone chemical formation not only in the urban area, but also on a regional scale of the surrounding area of Shanghai. The results show that during the experiment period, the ozone photochemical formation was strongly under the VOC (volatile organic compound)-limited condition in the urban area of Shanghai. Moreover, the VOC-limited condition occurred not only in the city, but also in the larger regional area. There was a continuous enhancement of ozone concentrations in the downwind of the megacity of Shanghai, resulting in a significant enhancement of ozone concentrations in a very large regional area in the surrounding region of Shanghai. The sensitivity study of the model suggests that there is a threshold value for switching from VOC-limited condition to NOx (nitric oxide and nitrogen dioxide)-limited condition. The threshold value is strongly dependent on the emission ratio of NOx / VOCs. When the ratio is about 0.4, the Shanghai region is under a strong VOC-limited condition over the regional scale. In contrast, when the ratio is reduced to about 0.1, the Shanghai region is under a strong NOx-limited condition. The estimated threshold value (on the regional scale) for switching from VOC-limited to NOx-limited condition ranges from 0.1 to 0.2. This result has important implications for ozone production in this region and will facilitate the development of effective O3 control strategies in the Shanghai region.
On the role of mesoscale eddies for the biological productivity and biogeochemistry in the eastern tropical Pacific Ocean off Peru
Authors: Stramma L. , Bange H. W. , Czeschel R. , Lorenzo A. , Frank M.
Published: June 2013

Abstract. Mesoscale eddies seem to play an important role for both the hydrography and biogeochemistry of the eastern tropical Pacific Ocean (ETSP) off Peru. However, detailed surveys of these eddies are not available, which has so far hampered an in depth understanding of their implications for nutrient distribution and biological productivity. In this study three eddies along a section at 16°45' S have been surveyed intensively during R/V Meteor cruise M90 in November 2012. A coastal mode water eddy, an open ocean mode water eddy and an open ocean cyclonic eddy have been identified and sampled in order to determine both their hydrographic properties and their influence on the biogeochemical setting of the ETSP. In the thermocline the temperature of the coastal anticyclonic eddy was up to 2 °C warmer, 0.2 more saline and the swirl velocity was up to 35 cm s–1. The observed temperature and salinity anomalies, as well as swirl velocities of both types of eddies were about twice as large as had been described for the mean eddies in the ETSP and the observed heat and salt anomalies (AHA, ASA) show a much larger variability than the mean AHA and ASA. We found that the eddies contributed significantly to productivity by maintaining pronounced subsurface maxima of chlorophyll. Based on a comparison of the coastal (young) mode water eddy and the open ocean (old) mode water eddy we conclude that the aging of eddies when they detach from the coast and move westward to the open ocean considerably influences the eddies' properties: chlorophyll maxima are weaker and nutrients are subducted. The coastal mode water eddy was found to be a hotspot of nitrogen loss in the OMZ, whereas, the open ocean cyclonic eddy was of negligible importance for nitrogen loss. Our results show that the important role the eddies play in the ETSP can only be fully deciphered and understood through dedicated high spatial and temporal resolution oceanographic/biogeochemical surveys.
Climate, tectonics or morphology: what signals can we see in drainage basin sediment yields?
Authors: Coulthard T. J. , Van de Wiel M. J.
Published: June 2013

Abstract. Sediment yields from river basins are typically considered to be controlled by tectonic and climatic drivers. However, climate and tectonics can operate simultaneously and the impact of autogenic processes scrambling or shredding these inputs can make it hard to unpick the role of these drivers from the sedimentary record. Thus an understanding of the relative dominance of climate, tectonics or other processes in the output of sediment from a basin is vital. Here, we use a numerical landscape evolution model (CAESAR) to specifically examine the relative impact of climate change, tectonic uplift (instantaneous and gradual) and basin morphology on sediment yield. Unexpectedly, this shows how the sediment signal from significant rates of uplift (10 m instant or 25 mm a−1) is lost due to internal storage effects within even a small basin. However, the signal from modest increases in rainfall magnitude (10–20%) can be seen in increases in sediment yield. In addition, in larger basins, tectonic inputs can be significantly diluted by regular delivery from non-uplifted parts of the basin.
Assessing the hydrological effect of the check dams in the Loess Plateau, China, by model simulations
Authors: Xu Y. D. , Fu B. J. , He C. S.
Published: June 2013

Abstract. Check dams are commonly used for soil conservation. In the Loess Plateau of China, check dams have been widely constructed as the principal means to retain floodwater and intercept soil sediments since the 1970s. For instance, there are more than 6572 check dams in the Yanhe watershed with an area of 7725 km2 in the Loess Plateau. However, little research has been done to quantify the hydrological effects of the check dams. In this research, the SWAT model (Soil and Water Assessment Tool) was applied to simulate the runoff and sediment in the Yanhe watershed. We treated the 1950s to 1960s as the reference period since there were very few check dams during the period. The model was firstly calibrated and validated in the reference period. The calibrated model was then used in the later periods to simulate the hydrological effects of the check dams. The results showed that the check dams had a regulation effect on runoff and a retention effect on sediment. From 1984 to 1987, the runoff in rainy season (from May to October) decreased by 1.54 m3 s−1 (14.7%) to 3.13 m3 s−1 (25.9%) due to the check dams; while in dry season (from November to the following April), runoff increased by 1.46 m3 s−1 (60.5%) to 1.95 m3 s−1 (101.2%); the sediment in rainy season decreased by 2.49 × 106 ton (34.6%) to 4.35 × 106 ton (48.0%). From 2006 to 2008, the runoff in rainy season decreased by 0.79 m3 s−1 (15.5%) to 1.75 m3 s−1 (28.9%), and the runoff in dry season increased by 0.51 m3 s−1 (20.1%) to 0.97 m3 s−1 (46.4%); the sediment in rainy season decreased by 2.03 × 106 ton (79.4%) to 3.12 × 106 ton (85.5%). Construction of the large number of check dams in the Loess Plateau has enhanced the region's capacity to control the runoff and sediment. In the Yanhe watershed, the annual runoff was reduced by less than 14.3% due to the check dams; and the sediment in rainy season was blocked by up to 85.5%. Thus, check dams are effective measures for soil erosion control in the Loess Plateau.
Decadal changes from a multi-temporal glacier inventory of Svalbard
Authors: Nuth C. , Kohler J. , König M. , von Deschwanden A. , Hagen J. O. , Kääb A. , Moholdt G. , Pettersson R.
Published: June 2013

Abstract. We present a multi-temporal digital inventory of Svalbard glaciers with the most recent from the late 2000s containing 33 775 km2 of glaciers, or 57% of the total land area of the archipelago. At present, 68% of the glaciated area of Svalbard drains through tidewater glaciers that have a summed terminus width of ~ 740 km. The glaciated area over the entire archipelago has decreased by an average of 80 km2 a−1 over the past ~ 30 yr, representing a reduction of 7%. For a sample of ~ 400 glaciers (10 000 km2) in the south and west of Spitsbergen, three digital inventories are available from 1930/60s, 1990 and 2007 from which we calculate average changes during 2 epochs. In the more recent epoch, the terminus retreat was larger than in the earlier epoch while area shrinkage was smaller. The contrasting pattern may be explained by the decreased lateral wastage of the glacier tongues. Temporal retreat rates for individual glaciers show a mix of accelerating and decelerating trends, reflecting the large spatial variability of glacier types and climatic/dynamic response times in Svalbard. Last, retreat rates estimated by dividing glacier area changes by the tongue width are larger than centerline retreat due to a more encompassing frontal change estimate with inclusion of lateral area loss.
Appendix I
Authors: Sectional Subcommittee Z39 American Standards Institute
Published: June 2013

Preliminary guidelines for the implementation of the proposed American standard for bibliographic information interchange on magnetic tape.
Appendix II
Authors: Sectional Subcommittee Z39 American Standards Institute
Published: June 2013

A proposed utilization of teh subrecord directory and subrecord relationship fields in the proposed American standard for a format for bibliographic information interchange on magnetic tape.
Economies of driftwood: Fuel harvesting strategies in the Kodiak Archipelago
Authors: Shaw Jennie Deo
Published: June 2013

Fuelwood harvesting is an integral part of the subsistence regime for many Arctic and subarctic peoples. Despite the relative paucity of woody resources in the northern tundra, charred wood fragments recovered from archaeological sites reveal a harvesting practice that is thousands of years old. Indeed, fuelwood gathering is a strategic behaviour involving a complex set of decisions beyond merely harvesting by proximity, as some have proposed. In this research, fuelwood harvesting is modeled within an economic framework. A fuel value index (FVI) is established to quantify the energetic returns of different wood species, and ethnographic interviews with Kodiak Island residents demonstrate the knowledge context that surrounds firewood acquisition. Archaeological charcoal from Kodiak Archipelago sites showcases a flexible, though increasingly selective strategy of fuelwood use by early inhabitants. For 7,500 years, maritime hunter-gatherers in the Gulf of Alaska took advantage of wood patchiness; they used a combination of exotic coniferous species in the form of driftwood and native deciduous trees such as alder to fuel their steam baths, smokehouses, and homes.
Spectroscopic Analysis of Graphitization and Grain Orientation of Carbon Films Grown by Photoemission-Assisted Plasma-Enhanced Chemical Vapor Deposition
Authors: Inukai Manabu , Ikenaga Eiji , Muro Takayuki , Ogawa Shuichi , Ojiro Yoshihiro , Takakuwa Yuji , Sato Motonobu , Nihei Mizuhisa , Yokoyama Naoki
Published: June 2013

The degrees of graphitization of carbon films grown by photoemission-assisted plasma-enhanced chemical vapor deposition were evaluated by hard-X-ray photoemission spectroscopy (HAXPES). The films were grown with a CH4/He or CH4/Ar mixture at growth temperatures from 400 to 1000 °C. Low-temperature growth was mainly focused on. The result of HAXPES showed that the films dominantly have sp2 bonding states. The film grown at 400 °C with CH4/Ar had an sp2 content of 84%, which was comparable to those of the films grown at temperatures ≥800 °C. The orientation of the graphitic grains was also examined by soft-X-ray absorption spectroscopy. The degrees of orientation of the films were up to 70%, compared to that of highly oriented pyrolytic graphite. The film grown at 400 °C with CH4/Ar had the degree of graphitization of ∼40%, which was comparable to that for the film grown at 800 °C with CH4/He.