bluuebunny/crossref_metadata_2025_split huggingface dataset:
New Approach To Identify Analogous Reservoirs
Authors: Rodríguez H. Martín , Escobar E.. , Embid S.. , Morillas N. Rodríguez , Hegazy M.. , Lake Larry W. 
Published: July 2014

SummaryIdentifying analogous reservoirs is important in planning the development of a new field. Usually, information available about a new area is limited or even nonexistent. Traditionally, the search for analogous reservoirs is carried out by experienced geoscientists. This search is subject to the availability of expertise, and the results heavily depend on the geology of the area. This paper presents a systematic and unbiased procedure to search for analogous reservoirs on the basis of information contained in a large validated database of engineering and geologic parameters. Each reservoir has its own "fingerprint" characterized by a set of properties, which commonly vary from one reservoir to another. The method uses multivariate statistical techniques to find a unique and reproducible list of reservoirs with fingerprints that are most similar to the selected target. The flexibility of the method allows for evaluation of different scenarios [e.g., static, dynamic, pressure/volume/temperature (PVT) behavior] by analog class.This method consists of four steps: data preprocessing, keyparameters selection, multivariate analysis, and similarity ranking. The first step involves analysis and preprocessing of the data. With key-parameter Selection, variables with largest impact on the case to be evaluated are identified. The third step, multivariate analysis, applies several multivariate techniques such as principal-component analysis (PCA) and cluster analysis. Finally, in the similarity-ranking step, we apply a similarity function to the group of previously selected "analogous reservoirs," generating a similarity ranking of analogous reservoirs.Casablanca oil field was used as a target reservoir to validate this new method. This reservoir is a mature carbonate field very well-known by Repsol, which had experts that identified four analogs. The new developed method was independently applied in this case to obtain 19 analogous reservoirs sorted by similarity criteria. The maximal similarity found was 85% for the Amposta Marino reservoir; this was one analogous reservoir independently identified by the business-unit team. Moreover, these four analogous reservoirs previously identified were within the first ten positions in similarity ranking. These results are encouraging because they ensure a reproducible response regardless of the user expertise.The singular feature of this new method is that it is based on a similarity function, which accounts for all the weighted key parameters (KPs) simultaneously. Commercial software often uses sequential filters. As a result, the procedure we present will support the predictive search of missing properties for the target reservoir, reducing the uncertainty for decision making.
Buckling Analysis of Tubular Strings in Horizontal Wells
Authors: Huang Wenjun , Gao Deli , Liu Fengwu 
Published: July 2014

Summary
A new buckling equation in horizontal wells is derived on the basis of the general bending and twisting theory of rods. The boundary conditions of a long tubular string are divided into two categories: the sum of the virtual work of bending moment and shear force at the ends of tubular strings is equal to zero, and the sum of the virtual work of bending moment and shear force at the ends is not equal to zero. Buckling solutions under different boundary conditions are obtained by solving the new buckling model. For the boundary conditions of the first category, the buckling solutions are identical with previous results. For the boundary conditions of the second category, the buckling solutions are different from the results under the boundary conditions of the first category. The results indicate that buckling behaviors depend on both the axial force and the boundary conditions. Compared with previous results, buckling solutions of the new model provide a more comprehensive description of tubular-buckling behaviors.
Development of a Set of Chromosome Segment Substitution Lines in Pearl Millet [Pennisetum glaucum (L.) R. Br.]
Authors: Kumari B. Ramana , Kolesnikova‐Allen Maria A. , Hash C. Tom , Senthilvel S. , Nepolean T. , Kishor P.B. Kavi , Riera‐Lizarazu Oscar , Witcombe J.R. , Srivastava Rakesh K. 
Published: July 2014

ABSTRACTThe detection of minor quantitative trait loci (QTL) with conventional mapping populations can be complicated by the overshadowing effect of major QTL as well as by interactions between QTL. To overcome these constraints, we developed a set of chromosome segment substitution lines (CSSLs) by introgression of overlapping chromosome segments from 863B into ICMB 841 background for use in QTL detection, fine mapping, and trait mechanism studies, especially for complex traits. Since each CSSL carries one or a few donor segments in the genetic background of the recurrent genotype, the QTL interaction is confined to genes present on small homozygous substituted segments. Advanced generation backcross progenies (1492), expected to provide coverage across the mapped length of each of the seven pearl millet linkage groups (LGs), were genotyped at 74 marker loci [(48 simple sequence repeats (SSRs), 21 single strand conformation polymorphism‐single nucleotide polymorphism (SSCP‐SNP), and 5 sequence tagged sites (STSs)] identifying 124 segment introgression homozygotes (13 for LG1, 9 for LG2, 10 for LG3, 41 for LG4, 23 for LG5, 11 for LG6, and 17 for LG7). These CSSLs consisted of 1–3 homozygous introgression segments substituted from 863B in the genetic background of the recurrent parent ICMB 841 and among them, 54 represent unique lines with the donor chromosome segment averaging 100.69 cM. These CSSLs developed here provide a nearly ideal set of genetic stocks for mapping and fine mapping the multitude of traits for which their parents differ.
Impact of Informal Cross Border Trade on Poverty Alleviation in Nigeria: Kotangowa Market [Lagos] in Perspective
Authors: Faleye Olukayode Abiodun 
Published: July 2014

27th August 2014: Final corrections were made to this paper as requested by the author - Editor.This work investigates the impact of Informal Cross Border Trade (ICBT) on poverty alleviation in Nigeria using Kotangowa market in Lagos as a case study. While the policy dialogue in Nigeria is driven by the state-centric perception of ICBT as an economic malice, this study analyzes the impact of ICBT including smuggling on the socio-economic development of participants. Also, it examines the role of the state and non-state actors in negotiating the implementation of regulations at the margins and center of the state. The research problem is examined through an assessment of the financial history of informal cross-border traders and customers in the market. The factors considered include income levels, assets acquisition, and expenditure overtime. The approach is qualitative based on descriptive method of data analysis. While ICBT is tainted by state policies as hampering economic development, findings show that it actually alleviates poverty. This paper argues that informality of this nature exemplifies the moderation of arbitrary state policies by non-state actors in Sub-Saharan Africa. DOI: http://dx.doi.org/10.3126/ctbijis.v2i1.10809 Crossing the Border: International Journal of Interdisciplinary Studies Vol.2(1) 2014: 13-22
Ethnic Consciousness in B.P. Koirala’s Sumnima
Authors: Kandel Bhanubhakta Sharma 
Published: July 2014

B. P. Koirala’s Sumnima is more criticized as a Freudian Nepali fiction but it is more than that. The novel is a very beautiful and important gift of the novelist to the practitioners of cultural theory because the novelist has discussed the issues of minority, plurality of meaning in cultural practices, cultural differences and ethnic consciousness through the innocent characters, among others. It also documents the conflict and problems among the people living in the same area and helps us understand the value of respecting the other. The book has talked in favour of the weaker section of the society and has made the indigenous practices and way of life victorious through the use of environment, vernacular language, characters, life style, beliefs, norms and values, art, myth, etc. over the classic living style guided and prescribed by the shashtras. Sumnima is a great documentation of cultural reconciliation among the people of different ethnic origins following different beliefs, norms, values and cultural practices. DOI: http://dx.doi.org/10.3126/ctbijis.v2i1.10810 Crossing the Border: International Journal of Interdisciplinary Studies Vol.2(1) 2014: 23-30
Impact of Global Climate Change on Human Health and Risk Prevention
Authors: De Asis , De Abhijit , Pun Jenny 
Published: July 2014

Many factors influence the world’s atmosphere and climate. Due to human activity, the concentration of "green house" gases is increasing resulting in rise of earth’s surface temperature. As a result of global warming, the eco system is changing, having adverse impact on our lives. Some increased health risk will be due to extreme weather events, while other problems will involve continual climate modification as consequences from ecological disruption or resulting from climate-induced economic disruption, e.g. traumatic, infectious, nutritional, psychological and other health consequences. Population, certain age groups such as elderly, women, children and vulnerable group, is at risk. For instance, there are risks of extreme temperatures and heat-wave, increased allergic disorders, hay fever, asthma due to air pollution, particulate matters and smog. In addition, due to flooding food-borne illnesses, water-borne illnesses, diarrheal diseases, increase in vector-borne diseases transmitted by Mosquitoes and mice e.g. Malaria, Filaria, Dengue fever, etc. There is compromise in food safety due to contaminated food with pesticide and bacteria resulting in food poisoning. Lifestyle and behavior are likely to be affected due to loss of social cohesion, increase in crime, accidents, anxiety, depression, stress, self harm and possible suicide, drug and alcohol misuse. Preventive measures will include assessment of the vulnerability of human health and mitigation measures. The health sector needs to play a key role in disease prevention, health education, disaster preparedness and effective measures to treat early evidence of impact affecting health. DOI: http://dx.doi.org/10.3126/ctbijis.v2i1.10818 Crossing the Border: International Journal of Interdisciplinary Studies Vol.2(1) 2014: 127-134
Nature et impacts des effets spatiaux sur les valeurs immobilières
Authors: Baumont Catherine , Legros Diego 
Published: July 2014

Dans cet article, nous montrons que l’influence des facteurs spatiaux sur la formation des prix immobiliers n’est pas totalement appréhendée par des variables explicatives d’attributs des voisinages et d’accessibilité. Nous avons considéré deux catégories d’attributs susceptibles d’impliquer des effets de voisinage : le statut socioéconomique des quartiers et les politiques de mixité. Notre étude empirique porte sur l’espace urbain comprenant la ville de Paris et la petite couronne qui comprend 2 636 aires de voisinage et sur lequel nous disposons de 21 098 transactions. Des effets spatiaux sont détectés, et l’estimation du modèle hédonique spatial de Durbin fournit les effets multiplicateurs. Nous montrons que la localisation dans les quartiers favorisés valorise les appartements et que les politiques de mixité ont un effet négatif. Dans chaque cas, les effets spatiaux accentuent ces impacts.
Effects of bite-jumping appliances on mandibular advancement in growing rats: A radiographic study
Authors: Oksayan Ridvan , Sokucu Oral , Ucuncu Neslihan 
Published: July 2014

ABSTRACT
Objective: The aim was to evaluate the effects of the use of mandibular advancement appliances on mandibular growth in growing rats. Materials and Methods: Twenty-four 8-week-old male Wistar albino rats were randomly divided into two experimental groups (12 rats each): Group I was a control group, and Group II was the mandibular advancement appliance group. A functional bite-jumping appliance was used in Group II to promote mandibular advancement. Anatomical changes in the condyle and mandible were evaluated by comparing radiographic results from before and after the study, with angular and linear measurements. Friedman and Mann-Whitney U-tests were used in statistical analysis. Results: According to the radiographic results, the growth of mandibles and condyles in Group II was significantly greater than with the length of the condylar process (A-B) and distance from condyle to menton (A-D) variables (P < 0.05). In addition, Group I showed greater mandibular base growth than did Group II (P < 0.05). Conclusions: We conclude that the use of an intraoral bite-jumping appliance can stimulate condylar growth and increase sagittal mandibular advancement in growing rats.
A cone-beam computed tomography study of the root canal morphology of anterior teeth in a Turkish population
Authors: Altunsoy Mustafa , Ok Evren , Nur Bilge Gulsum , Aglarci Osman Sami , Gungor Enes , Colak Mehmet 
Published: July 2014

ABSTRACT
Objective: The aim of this study was to determine the root and canal morphology of the maxillary and mandibular anterior teeth in a Turkish population by analyzing cone-beam computed tomography (CBCT) images. Materials and Methods: CBCT images of 417 females and 410 males with a mean age of ranging from 14 to 70 years were examined in this study. A total of 1453 maxillary central incisors, 1504 maxillary lateral incisors, 1523 maxillary canines, 1582 mandibular central incisors, 1603 mandibular lateral incisors, and 1604 mandibular canines were analyzed. The number of root canals and the canal configurations were investigated and then were classified according to Vertucci's classification. The data were analyzed with the Pearson Chi-square test. Results: The Type 1 canal configuration was most prevalent in the maxillary anterior teeth (96.8-99.7%). The Types 2, 3, 4, and 5 canal configurations were observed within the range of 0-1.3%, 0-0.8%, 0-0.7%, and 0-1.8%, respectively. In the mandibular anterior teeth, the Type 1 canal configuration was most prevalent (77-95%). The Types 2, 3, 4, and 5 canal configurations were observed within a range of 0.2-2.7%, 0.2-1.6%, 0.9-5.9%, and 1.8-14.4%, respectively. The prevalence of two canals was higher in males than in females both in the maxillary and mandibular anterior teeth (P < 0.05). Conclusions: Type 1 was the most prevalent canal configuration of maxillary and mandibular anterior teeth in the Turkish population. Type 5 was the most frequently observed canal configuration of the two canalled teeth. The incidence of root canal numbers and configurations differed with sex.
The effect of drinks on color stability and surface roughness of nanocomposites
Authors: Leite Maria Luísa de Alencar e Silva , Silva Fábia Danielle Sales da Cunha Medeiros e , Meireles Sônia Saeger , Duarte Rosângela Marques , Andrade Ana Karina Maciel 
Published: July 2014

ABSTRACT
Objective: The aim was to evaluate the color and surface roughness of nanoparticle (C1) and nanohybrid (C2) composites after immersion in distilled water, acai juice, grape juice and red wine and repolishing. Materials and Methods: After recording the initial surface roughness and color, the specimens were divided into four groups according to the storage solution. The specimens were reassessed after immersion for 1, 2, 4, 8, and 12 weeks and after repolishing. Results: The results showed that after 2 weeks, there were statistically significant changes in color of both resins in all groups, with the exception of the specimens stored in distilled water (P > 0.05). Only 12 weeks of immersion in red wine changed the roughness of composite C1 (P = 0.009). Conclusions: Red wine produced the greatest color change in nanocomposites, followed by grape juice. Acai juice made the color unacceptable clinically only after 12 weeks. Repolishing reduced the color change in all groups.
Radiopacity evaluation of contemporary resin composites by digitization of images
Authors: Ermis R. Banu , Yildirim Derya , Yildiz Gul , Gormez Ozlem 
Published: July 2014

ABSTRACT
Objective: The aim of this study was to evaluate the radiopacity of different composite resins and compare the values to those of human enamel and dentine. Materials and Methods: Five specimens of each material with thicknesses of 2 mm were prepared and radiographed alongside aluminum step wedge and human enamel and dentin. Three occlusal radiographs for each material were taken and digitized using a desktop scanner. Mean gray values of the test materials were measured using Image J software. Then a conversion was performed according to establish the radiopacity of the test materials, in millimeters of equivalent Al. Data were analyzed using one-way analysis of variance and Duncan multiple range tests (P < 0.05). Results: The radiopacity values varied among the restorative materials (P < 0.05). The radiopacity values of the materials tested were, in decreasing order: Enamel Plus HRI > Z250 > Filtek Ultimate ≥ Z550 > Nexcomp ≥ Nanoceram Bright > enamel ≥ Estelite Sigma Quick > Clearfil Majesty Esthetic ≥ Reflexions XLS ≥ Aelite LS Posterior ≥ dentin ≥ 2 mm Al. Conclusion: All resin composite materials investigated in this study presented different radiopacity values. However, all materials had radiopacity values greater than dentin and had sufficient radiopacity to meet International Organization for Standardization 4049 standard.
Push-out bond strength of different mineral trioxide aggregates
Authors: Ertas Huseyin , Kucukyilmaz Ebru , Ok Evren , Uysal Banu 
Published: July 2014

ABSTRACT
Objective: This study was aimed to evaluate and to compare the push-out bond strength of different brands of mineral trioxide aggregate (MTA) with a calcium enriched mixture cement (CEM). Materials and Methods: Fifteen extracted, single-rooted human teeth were used. The middle-third of the roots were sliced perpendicular to the long axis into 1.00 ± 0.05 mm thick serial slices (15 root × 4 slice = 60 specimen). The specimens were then divided into three groups (n = 20). The standardized root discs were filled with white CEM, ProRoot MTA, MTA-Angelus and wrapped in a serum-soaked gauze. After 3 days at relative humidity, the push-out bond strengths were measured with a universal testing machine. Data were analyzed using one-way analysis of variance and post hoc Tukey tests. Results: The mean push-out bond strength value of the ProRoot MTA group (12.7 ± 2.5 MPa) was the highest and statistically significant difference was recorded between ProRoot MTA and other groups (P < 0.001). There was no significant difference between the mean bond strength of CEM cement (4.6 ± 1.1 MPa) and MTA-Angelus (4.5 ± 1.5 MPa) (P = 0.982). Conclusion: The push-out bond strength of MTA was changed with the brands and ProRoot MTA had the highest push-out bond strength.
The reparability of contemporary composite resins
Authors: Spyrou Maria , Koliniotou-Koumpia Eugenia , Kouros Pantelis , Koulaouzidou Elisabeth , Dionysopoulos Pavlos 
Published: July 2014

ABSTRACT
Objective: The objective was to investigate the way that various surface treatments could influence the bond strength of the repair of methacrylate (MC) and silorane (SIL) composites. Materials and Methods: A total of 160 MC and SIL cylindrical specimens were polymerized and aged in artificial saliva solution for 7 days. Depending on the following surface treatment (diamond bur or air abrasion), and the conditioning procedure (orthophosphoric acid or sodium hypochlorite), 16 groups were formed and repaired either with MC, either with SIL composite. Repaired specimens were subjected to an additional aging procedure in artificial saliva for 7 days, followed by thermo-cycling and then stressed in shear at a rate of 0.5 mm/min until failure. Failure patterns were analyzed using stereomicroscope and scanning electron microscopy. Results: MC composite showed statistically significant higher bond strength both as a base or repair material than SIL (P < 0.001). Statistically significant differences were not observed, when grinding and conditioning procedures was compared. Pretest failures were observed when aged MC-based composite was repaired with SIL-based. Conclusions: Type of composite seems to be the main factor influencing the bond strength of the repair. MC-based composite showed better repairability than SIL composite. Optimum repair conditions should include knowledge of the composite's composition.
Evaluation of gingival bleeding awareness by comparison of self-reports and clinical measurements of freshman dental students
Authors: Baser Ulku , Germen Meliha , Erdem Yelda , Issever Halim , Yalcin Funda 
Published: July 2014

ABSTRACT
Objective: The aims of this descriptive, cross-sectional investigation were to evaluate the gingival health awareness of dental students by comparing their clinical gingival bleeding scores and self-reports, and to compare differences in awareness between males and females. Methods: In total, 100 (51 males, 49 females) freshman dental students were included in the study. Periodontal indices recorded were: Presence of plaque percentage (plaque index [PI], %), percentage of sites of bleeding on probing (BOP, %), probing depth, and community periodontal index (CPI). Percent agreement, kappa agreement, sensitivity, and specificity were calculated by comparing their self-reported gingival bleeding and BOP%. Results: The self-reports of gingival bleeding exhibited statistically significant correlations with BOP% in females (r = 0.42, P = 0.003). Female students showed a higher degree of awareness when kappa agreement, 0.23 (males: 0.16, females: 0.39), sensitivity, 48% (males: 42%, females: 51%), and specificity, 95% (males: 90%, females: 100%) were calculated. Although male dental students had higher PI and CPI scores, there was no significant difference by gender in the clinical measurements. Conclusions: According to our results, the validity of self-reported gingival bleeding was higher among dental students than in previous population-based studies. Female dental students showed a higher degree of awareness than males of their gingival health. Half of the included dental students could not differentiate whether they had gingival bleeding when there was actual bleeding. More emphasis should be given to the education of dental students regarding the relationship between gingival bleeding and active periodontal disease.