bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sequential Maximum Likelihood Estimation for the Parameter of the Linear Drift Term of the Rayleigh Diffusion Process
Authors: Kuang Nenghui , Li Chunli , Xie Huantian 
Published: February 2015

AbstractIn this paper, we investigate the properties of a sequential maximum likelihood estimator of the unknown linear drift parameter for the Rayleigh diffusion process. The estimator is shown to be closed, unbiased, normally distributed and strongly consistent. Finally a simulation study is presented to illustrate the efficiency of the estimator.
Stone Consolidation by Bacterial Carbonatogenesis: Evaluation of in situ Applications
Authors: Rodriguez-Navarro Carlos , Jroundi Fadwa , Gonzalez-Muñoz Maria Teresa 
Published: February 2015

AbstractPrecipitation of calcium carbonate minerals by bacteria, the so-called bacterial carbonatogenesis, is a promising method for the consolidation of decayed stone. Despite extensive laboratory testing that has demonstrated the efficacy of this method, little is, however, known regarding the medium- and/or long-term performance of this bacterial conservation treatment once appliedin situ, on stone buildings. Here, we report on the evaluation of the performance of bacterial consolidation treatments applied in three different historical buildings placed in an urban environment and built using a highly porous, easily decayed calcarenite stone. Peeling tape tests show a significant long-lasting (up to four years) strength improvement following treatment with either aMyxococcus xanthusbacterial culture or a sterile nutritional solution that selectively activates the carbonatogenic bacteria inhabiting the stone. Total color changes, measured before and after treatment using a spectrophotometer, are systematically below the acceptable value of ΔE≤ 5. Culture-dependent analysis of the microbiota shows that 100% of the culturable bacteria collected before and after treatment is carbonatogenic, and the total count of fungi spores remains constant or diminishes, while the population of acid-producing bacteria decreases over time after treatment application. Culture-independent microbial analyses show that no deleterious microbiota develops after treatment, being carbonate-producing Proteobacteria, Firmicutes and Actinobacteria the most abundant phyla both before and after treatment. Overall these results show that thein situapplication of the bacterial consolidation method shows no detrimental side effects and is highly effective in the medium- and long-term.
A Comparison Between the Burn Condition of Deuterium–Tritium and Deuterium–Helium-3 Reaction and Stability Limits
Authors: Motevalli Seyed Mohammad , Fadaei Fereshteh 
Published: February 2015

Abstract
The nuclear reaction of deuterium–tritium (D–T) fusion by the usual magnetic or inertial confinement suffers from a number of difficulties and problems caused by tritium handling, neutron damage to materials and neutron-induced radioactivity, etc. The study of the nuclear synthesis reaction of deuterium–helium-3 (D–3He) at low collision energies (below 1 keV) is of interest for its applications in nuclear physics and astrophysics. Spherical tokamak (ST) reactors have a low aspect ratio and can confine plasma with β≈1. These capabilities of ST reactors are due to the use of the alternative D–3He reaction. In this work, the burn condition of D–3He reaction was calculated by using zero-dimensional particles and power equations, and, with the use of the parameters of the ST reactor, the stability limit of D–3He reaction was calculated and then the results were compared with those of D–T reaction. The obtained results show that the burn conditions of D–3He reaction required a higher temperature and had a much more limited temperature range in comparison to those of D–T reaction.
Impact of Magnetic Field on Mixed Convective Peristaltic Flow of Water Based Nanofluids with Joule Heating
Authors: Abbasi Fahad Munir , Hayat Tasawar , Ahmad Bashir 
Published: February 2015

Abstract
Peristaltic transport of water-based nanofluids in the presence of applied magnetic field is studied. Two different types of nanofluids (silver-water and copper-water nanofluids) are used in the analysis. Effects of mixed convection, viscous dissipation, Joule heating, and heat generation/absorption are considered. Long wavelength and low Reynolds number approximations are used in the mathematical modelling. Numerical solutions are obtained for the velocity, pressure gradient, pressure rise per wavelength, temperature, and heat transfer rate at the wall. Physical quantities of interest are studied through graphs and tables. Comparison of water, silver-water, and copper-water nanofluid is presented. Results show that velocity and temperature of ordinary water are larger than those of nanofluids. Maximum velocity, temperature, and heat transfer rate at the wall of silver-water nanofluid is relatively higher than the copper-water nanofluid.
Energy States of Some Diatomaic Molecules: The Exact Quantisation Rule Approach
Authors: Falaye Babatunde J. , Ikhdair Sameer M. , Hamzavi Majid 
Published: February 2015

Abstract
In this study, we obtain the approximate analytical solutions of the radial Schrödinger equation for the Deng–Fan diatomic molecular potential by using the exact quantisation rule approach. The wave functions were expressed by hypergeometric functions via the functional analysis approach. An extension to the rotational–vibrational energy eigenvalues of some diatomic molecules is also presented. It is shown that the calculated energy levels are in good agreement with those obtained previously (E

nℓ
–D; shifted Deng–Fan).
Implementation of an Intelligent Computing Platform for Determination of Moisture Content of Subgrade Soil
Authors: Shetu N. S. , Masum M. A. 
Published: February 2015

Abstract
Determination of moisture content of soil is absolutely crucial and must be performed frequently to assure the quality of construction work. In a view to suppress the limitations and inaccuracies of the existing methods, a new concept is successfully implemented. Artificial neural networks (ANNs) and state-of-the-art electronic circuitry are embedded to realize an automatic measurement system based on an open-source computing platform. Moreover, to facilitate user interaction with the system, a sophisticated graphical user interface (GUI) is created. This system, from both the hardware and software perspective, brings new ideas in, not only the moisture content determination test, but in geotechnical engineering laboratory and field instrumentation in terms of accuracy, automation, and machine intelligence. It will be obvious from this work that open-source hardware and software embedded in test equipment can automate the whole test procedure for almost all types of tests in geotechnical engineering using appropriate sensor, and data-acquisition and processing routines. This paper presents the technical know-how of the system setup, hardware, and software development, workflow, and system validation for the determination of moisture content of subgrade soil in two distinct test modes—supervised and unsupervised. This work will demonstrate that, not only the test procedure can be automated, but time optimization is also possible, which results in at least 50 % test time reduction.
Telomerase Expression in Individuals With Chronic and Aggressive Periodontitis
Authors: Katarkar Atul , Saha Arindam , Mukherjee Sanjit , Kundu Debabrata , Bandyopadhyay Prasanta , Chaudhuri Keya 
Published: February 2015

Background: The aim of this study is to evaluate the expression of human telomerase reverse transcription (hTERT) enzyme in chronic periodontitis (CP) and aggressive periodontitis (AgP) compared with healthy individuals.Methods: A total of 79 individuals consented to participate in the study. The study sample comprised healthy individuals (n = 30), patients with CP (n = 30), and patients with AgP (n = 19). Gingival tissue was collected and evaluated for hTERT expression by Western blot and immunohistochemical methods. Reverse transcription polymerase chain reaction was performed using the gingival crevicular fluid (GCF) samples.Results: The hTERT messenger RNA (mRNA) and protein expression was significantly higher in AgP compared with CP (P <0.001). In GCF, 53.33% of patients with CP and 68.42% of patients with AgP were showing hTERT mRNA expression, but it was not detected in the control group. The AgP tissue showed higher hTERT expression compared with CP (P <0.001). The hTERT mRNA expression did not show a correlation with gingival index (GI), plaque index (PI), probing depth (PD), and clinical attachment loss (AL) in patients with AgP, whereas hTERT protein expression was strongly correlated with GI, PI, PD, and AL in patients with AgP. The protein expression of hTERT shows significant but moderate correlation with GI and AL in patients with CP.Conclusion: High expression of hTERT might be associated with periodontal disease progression, suggesting that hTERT could be a potential prognostic marker.
The Gran San Bernardo nappe in the Aosta valley (western Alps): a composite stack of distinct continental crust units
Authors: Malusà Marco G. , Polino Riccardo , Martin Silvana 
Published: February 2015

Abstract
In the Aosta Valley, the Gran San Bernardo nappe, which comprises the basement sequences classically referred to as Ruitor Massif and Zona Interna, appears to be a stack of distinct basement units with distinct lithological features and contrasting tectono-metamorphic evolution piled up during the Eocene. In the former Zona Interna, two different units (Gran Nomenon and Leverogne) have been distinguished. The Gran Nomenon unit is a polymetamorphic basement unit, with a pre-Alpine epidote-amphibolite facies metamorphic imprint, intruded by granitoid rocks during the early Mississippian. It bears the evidence of a pervasive Alpine metamorphic overprint under greenschist facies conditions, and does not share common characters with any other basement sequence exposed in the Gran San Bernardo nappe. The Leverogne unit is a monometamorphic basement unit, with some analogies with the Mont Pourri basement sequence, intruded by granophyric rocks of Middle Cambrian age. It suffered epidote-blueschist and greenschist facies metamorphism during the Alpine orogenesis, and shows a deformation history partly different with respect to the Gran Nomenon unit. These units are bounded by tectonic melanges that represent Alpine shear zones, and have been juxtaposed under greenschist facies conditions during the late stages of exhumation of the belt. The Gran Nomenon unit, which does not show a significant HP/LT overprint, was probably not as deeply buried as the Leverogne and the Ruitor units during Alpine orogenesis.
Palynofacies and calcareous nannofossils in the Upper Kimmeridgian, southeastern Paris basin (France)
Authors: Giraud Fabienne , Courtinat Bernard , Garcia Jean-Pierre , Baudin François , Guillocheau François , Dromart Gilles , Atrops François , Collete Claude 
Published: February 2015

AbstractThe Upper Kimmeridgian Members “Calcaires blancs supérieurs” and the “Marnes à exogyres supérieures” of the southeastern Paris basin were investigated for their palynofacies and calcareous nannofossils. These members display alternating limestone-marl lithotypes and represent shallow marine palaeoenvironments. The lower carbonate member is interpreted as a proximal palaeoenvironment (palaeobathymetry = 5 to 10 m), where storm and swell deposits were prevalent and the salinity was occasionally weak. The relative richness of brown phytoclasts in this part is favoured by good preservation related to restricted conditions. These conditions would explain the dominance of the nannofossil Cyclagelosphaera margerelii in the nannofossil assemblages. The palynological data as those of the nannofossil assemblages show variations in the shift from carbonate member to marly member. The dominance of brown phytoclasts over black phytoclasts, the presence of amorphous organic matter (AOM), and the highest abundance and diversity observed within the nannofossil assemblages suggest that the maximum of distality occurred during this transition, at the basal part of the Marnes à Exogyres supérieures. The upper part of the section (marly member) characterized by storm deposits and storm-coquina beds is deeper (palaeobathymetry probably between 10 and 40 m depth) than the lower part. Oxidizing depositional conditions prevailed and explained the abundance of black particles found in this upper part, while proximate cysts and elevated non-placolith coccolith abundances indicate that relationships with the open sea were probably more significant compared to the lower part. Towards the top of the section, recurrences of restricted conditions are reflected by relatively elevated amounts of AOM and the abundance peak of the nannofossil Biscutum ellipticum. This study shows that micropalaeontological signals can be well recorded in vast lagunal domains. We speculate that salinity, nutrient supply, and oxygenation of the waters control microfossil associations. In shallow environments, these parameters are particularly fluctuating, especially when freshwater dilutes marine waters in surface, on the occasion of rainy periods or of intense arrival of continental waters.
Design and Evaluation of Gravel and Frac Packs With a Fully Three-Dimensional Wellbore Simulator
Authors: Klein H.H. , Cooper G.D. , Nelson S.G. 
Published: February 2015

Abstract
During the gravel packing and fracturing processes in deviated wells the flows can follow complicated three-dimensional paths in the treating string. In this paper we present the formulation of a three-dimensional numerical model of fluid and solids transport for evaluation and design of these completion events. The simulator tracks the slurry flow from the surface, throughout the wellbore, and into the perforations. It treats fluid return and loss into the formation. The model simulates fluid displacement, gravel settling, dune formation, bridging, fluid flow through packed solids and flow into and out of screens.
We present validation results against laboratory and field data for various fluids, deviations, pumping rates, and solids loading.
Reduction in Fatigue Failures through Crack Detection by Alternating Current Field Measurement
Authors: Gaynor T. M. , Roberts D. L. , Homan E. , Dover W. 
Published: February 2015

Abstract
Once a crack is initiated by cyclic stress in a drill string component it will grow under further service loading and will fail when insufficient uncracked material remains to carry the applied load. Because the levels of cyclic and subsequent stress in drilling may be unknown – or unknowable – the drilling equipment supplier's main defence against component fatigue failure (after design) is detection of the initial crack, conventionally by Magnetic Particle or Dye Penetrant Inspection.
A clean bill of health from conventional inspection means no more than that no crack indications were found. The likely locations of cracks (e.g. thread roots in box connections) are often difficult to examine. Detection and interpretation are subjective, and depend on the skill of the inspector. A crack and a surface defect may be indistinguishable. No re-viewable evidence of component inspection is left to allow an audit of inspection previously performed.
Alternating Current Field Measurement (ACFM) induces a current in the surface of a component. If ACFM detects a perturbation in the magnetic field created in the free space above the surface, a surface break is present. ACFM is able to determine length and depth, and hence the severity of any defect. It does not require a clear line of sight between operator and crack location. Because all data is recorded electronically, operator interpretation of results may be eliminated completely and any inspection revisited.
The paper describes the theory of the technique, the equipment used and practical results from the first application of ACFM to downhole motor components. The tests, conducted in the Middle East, allowed complete confidence that an ACFM clean bill of health meant "no cracks" and not "no cracks discovered". Components laid down on hours or MPI crack indications were returned to service when ACFM reinspection found no cracks. During the period of the pilot test, no downhole motor fatigue failures occurred.
Early Complications Following Cemented Modular Hip Hemiarthroplasty
Authors: Sullivan Niall P.T , Hughes Andrew W , Halliday Ruth L , Ward Abigail L , Chesser Tim J.S 
Published: February 2015

Introduction :Hemiarthroplasty is the recommended treatment for displaced, intracapsular, femoral neck fractures. This study aimed to evaluate the early complications following insertion of the JRI Furlong cemented hemiarthroplasty, a contemporary, modular, double tapered, polished prosthesis.Method :A series of 459 consecutive patients (May 2006 - June 2009) treated with a JRI hemiarthroplasty with a minimum of one-year (1-4years) follow-up were evaluated. Data collected retrospectively from clinical records and hospital databases included patient demographics, mortality, deep infection, dislocation, periprosthetic fracture, and any requirement for revision or complications related to the prosthesis.Results :Full data were available for 429 of 459 (93%), partial data for 30 (7%). Average age was 83 years (52-100), 76% were female. One-year mortality was 24%. Intraoperative fractures occurred in 17 patients (3.7%). There were two intraoperative deaths. There were nine early deep wound infections (2%). There were two revisions to total hip replacement (THR), four patients required conversion to THR and one underwent an excision arthroplasty procedure.Discussion :Early surgical outcomes for the JRI hemiarthroplasty prosthesis are equivalent or superior to other major hemiarthroplasty prostheses previously reported however, there was a high intraoperative fracture rate of 3.7%. We recommend using a stem one size smaller than the final broach in fragile, osteoporotic bone. No patients re-presented with aseptic loosening or stem failure.
Diagnostic Stability of Acute and Transient Psychotic Disorders in Patients Attending Tertiary Care Hospital
Authors: Ranjan Sanjeev , Shakya R , Shyangwa P M 
Published: February 2015

INTRODUCTION: Acute and Transient Psychotic Disorders (ATPDs) have been the subject of nosological debate. Some authors argue that these conditions should be considered as an independent group of disorders. Others view these psychoses as variants of schizophrenia or mood disorders, pointing to their diagnostic instability. There have been few studies of the diagnostic stability based on the International Classification of Diseases-tenth edition (ICD-10) category of ATPDs, and these studies have mixed results. This study was done to examine the diagnostic stability of ATPDs according to ICD-10. MATERIAL AND METHODS: Thirty patients diagnosed as ATPDs at psychiatry department of B.P. Koirala Institute of Health Science (BPKIHS) were followed up at one month and after three months of their onset of illness. Their diagnosis was reassessed at every follow-up using standard instrument. RESULTS: The diagnosis of ATPDs was unchanged in twenty four (80%) out of thirty patients. Diagnostic change was to schizophrenia in three cases and to mood disorders in three other cases. CONCLUSION: Overall, ATPDs is a diagnostically stable entity.DOI: http://dx.doi.org/10.3126/jucms.v2i4.12035Journal of Universal College of Medical Sciences (2014) Vol.02 No.04 Issue 08,Page: 7-10
Presentation, Treatment and Outcomes of Acute Coronary Syndrome in a Tertiary Care Hospital in Central Nepal
Authors: Barakoti Murari Prasad , Regmi S R , Dhital B M 
Published: February 2015

INTRODUCTION: Nepal is facing with increasing rate of coronary artery disease, yet little is known about presentation, treatment and outcome of this disease in our population and our setting. We aimed to document the characteristics in consecutive cases in a tertiary level hospital. MATERIAL AND METHODS: Seventy eight total cases were documented in six months period and evaluated the data on presentation, management, in-hospital mortality and non-fatal adverse cardiovascular event (MACE). RESULTS: Mean (SD) age at presentation was 65 (13) years and did not differ among acute coronary syndrome (ACS) types (STEMI= 23%, Non ST Elevation Myocardial Infarction (NSTEMI)= 28%, UA= 49%). ACS is still a disease prevalent in >50 years of age (88%). Dual antiplatelet agents and statin were used >90% cases and coronary angiography was performed in ~50% cases. Unstable angina patients has significantly higher number of normal coronaries or non- critical stenosis. Percutaneous coronary intervention rates were significantly higher among STEMI admissions (38% vs 22 % vs 13%, P= 0.003). Unadjusted in-hospital mortality rate was 11%, significantly higher than NSTEMI (5%) and UA (5%). Non-fatal major MACE rate including reinfarction, heart failure or cardiogenic shock was also high in STEMI and NSTEMI patients than in unstable angina patients. CONCLUSION: This study represents contemporary practice of ACS care and provides opportunity to improve care for symptom recognition, treatment options and medical therapy.DOI: http://dx.doi.org/10.3126/jucms.v2i4.12036Journal of Universal College of Medical Sciences (2014) Vol.02 No.04 Issue 08Page: 11-14
Stress and Coping Mechanism of Infertile Women Attending Infertility Clinic in Kathmandu
Authors: Sharma Chandrakala , Subedi D , Rai L , Upreti K 
Published: February 2015

INTRODUCTION: Many women face problems related to infertility in various aspects of their life. Also, it is not comfortable to discuss on this issue. Because of this, the feelings and distress faced by women may not come out and the pent up emotions may lead to different stress related problems. MATERIAL AND METHODS : A descriptive research design was adopted to assess the stress and coping mechanism of infertile women attending infertility clinic in Kathmandu Nepal. The study was conducted from October 2011 to January 2013. Purposive sampling technique was used and sample size was 100. Data was collected through semi- structured interview using; 'Perceived Stress Scale'(PSS) and 'Coping Check List' (CCL). RESULTS: Regarding stress level of respondents, 40% were at very high level of stress and 35% with high level of stress. High level stress was found among the age group of 21-30 years. In relation to level of stress and coping strategies, 54.17% respondents with high stress used religious coping strategies, 50% of the respondents with very high stress also used religious coping, followed by 40% emotional coping and 37.5% problem focused coping and seeking social support strategies to overcome the stress. CONCLUSION: It can be concluded that the almost more than half of the respondents were under high level of stress and mostly were those who are under treatment for more than 1-3 yrs of duration. The study also concluded that the higher the age the respondents were more stressed due to the infertility. It was also found that most of the respondents used religious coping as well as emotional focused coping during the stressful period.DOI: http://dx.doi.org/10.3126/jucms.v2i4.12039Journal of Universal College of Medical Sciences (2014) Vol.02 No.04 Issue 08Page: 24-28