bluuebunny/crossref_metadata_2025_split huggingface dataset:
A theoretical and experimental study of the circular sawing process
Authors: Hellström Lisbeth M. , Biller Sven-Olov , Edvardsson Sverker , Gradin Per A. 
Published: October 2013

Abstract
To gain further insight into the energy dissipation during the wood sawing process, a theoretical model has been developed. The model is based on the assumption that there are two basic causes for energy dissipation during sawing: the creation of a new surface and the compression of material below a saw tooth. It is assumed that both contributions can be dependent on the cutting angle (the angle between the fiber direction and the tangent to the path followed by a saw tooth) because a saw tooth changes its angle of attack during its way through a log. To determine this dependence of the dissipation on the cutting angle, a series of experiments with pine plank sawing were performed by means of different feeding rates and cutting angles while the electrical power supplied to the saw was measured. The parameters in the theoretical model were derived from the experimental findings. Finally, two tests were carried out under different conditions with respect to thickness and cutting angles and the validity of the model was confirmed concerning the prediction of the electrical power consumption.
The effect of round-off error on long memory processes
Authors: La Spada Gabriele , Lillo Fabrizio 
Published: October 2013

AbstractWe study how the round-off (or discretization) error changes the statistical properties of a Gaussian long memory process. We show that the autocovariance and the spectral density of the discretized process are asymptotically rescaled by a factor smaller than one, and we compute exactly this scaling factor. Consequently, we find that the discretized process is also long memory with the same Hurst exponent as the original process. We consider the properties of two estimators of the Hurst exponent, namely the local Whittle (LW) estimator and the detrended fluctuation analysis (DFA). By using analytical considerations and numerical simulations we show that, in presence of round-off error, both estimators are severely negatively biased in finite samples. Under regularity conditions we prove that the LW estimator applied to discretized processes is consistent and asymptotically normal. Moreover, we compute the asymptotic properties of the DFA for a generic (i.e., non-Gaussian) long memory process and we apply the result to discretized processes.
Espectros en el archivo
Authors: Vázquez Juan de Dios 
Published: October 2013

Este artículo estudia la novela Cementerio de papel (2002) donde se teje un thriller detectivesco en torno a un asesinato sucedido bajo la cúpula del Archivo General de la Nación (Lecumberri). Con el traslado y la apertura de los expedientes de la antigua Dirección Federal de Seguridad retornan a la antigua prisión las viejas víctimas y sus victimarios, sólo que ahora en forma de espectros del pasado. La obra se mueve, así, dentro del binomio cárcel/archivo, presentando a Lecumberri como un espacio vivo desde donde empezar una búsqueda por la justicia y la verdad, sin caer en la melancolía o el victimismo.
This essay examines the novel Cementerio de Papel [Paper Cemetery] (2002), a detective thriller about a murder that took place under the dome of the Archivo General de la Nación [National General Archive] (Lecumberri). The relocation and opening of the files of the former Dirección Federal de Seguridad [Federal Security Bureau] in the former prison comes along with the return of victims and victimizers, only now they come back as ghosts of things past. The novel works with the binomial jail/archive, featuring Lecumberri as a live space from which to begin a search for justice and truth, without sinking into melancholy or victimhood.
Genome of Drosophila suzukii, the Spotted Wing Drosophila
Authors: Chiu Joanna C , Jiang Xuanting , Zhao Li , Hamm Christopher A , Cridland Julie M , Saelao Perot , Hamby Kelly A , Lee Ernest K , Kwok Rosanna S , Zhang Guojie , Zalom Frank G , Walton Vaughn M , Begun David J 
Published: October 2013

Abstract
Drosophila suzukii Matsumura (spotted wing drosophila) has recently become a serious pest of a wide variety of fruit crops in the United States as well as in Europe, leading to substantial yearly crop losses. To enable basic and applied research of this important pest, we sequenced the D. suzukii genome to obtain a high-quality reference sequence. Here, we discuss the basic properties of the genome and transcriptome and describe patterns of genome evolution in D. suzukii and its close relatives. Our analyses and genome annotations are presented in a web portal, SpottedWingFlyBase, to facilitate public access.
Identification and Characterization of FGF2-Dependent mRNA: microRNA Networks During Lens Fiber Cell Differentiation
Authors: Wolf Louise , Gao Chun S , Gueta Karen , Xie Qing , Chevallier Tiphaine , Podduturi Nikhil R , Sun Jian , Conte Ivan , Zelenka Peggy S , Ashery-Padan Ruth , Zavadil Jiri , Cvekl Ales 
Published: October 2013

AbstractMicroRNAs (miRNAs) and fibroblast growth factor (FGF) signaling regulate a wide range of cellular functions, including cell specification, proliferation, migration, differentiation, and survival. In lens, both these systems control lens fiber cell differentiation; however, a possible link between these processes remains to be examined. Herein, the functional requirement for miRNAs in differentiating lens fiber cells was demonstrated via conditional inactivation of Dicer1 in mouse (Mus musculus) lens. To dissect the miRNA-dependent pathways during lens differentiation, we used a rat (Rattus norvegicus) lens epithelial explant system, induced by FGF2 to differentiate, followed by mRNA and miRNA expression profiling. Transcriptome and miRNome analysis identified extensive FGF2-regulated cellular responses that were both independent and dependent on miRNAs. We identified 131 FGF2-regulated miRNAs. Seventy-six of these miRNAs had at least two in silico predicted and inversely regulated target mRNAs. Genes modulated by the greatest number of FGF-regulated miRNAs include DNA-binding transcription factors Nfib, Nfat5/OREBP, c-Maf, Ets1, and N-Myc. Activated FGF signaling influenced bone morphogenetic factor/transforming growth factor-β, Notch, and Wnt signaling cascades implicated earlier in lens differentiation. Specific miRNA:mRNA interaction networks were predicted for c-Maf, N-Myc, and Nfib (DNA-binding transcription factors); Cnot6, Cpsf6, Dicer1, and Tnrc6b (RNA to miRNA processing); and Ash1l, Med1/PBP, and Kdm5b/Jarid1b/Plu1 (chromatin remodeling). Three miRNAs, including miR-143, miR-155, and miR-301a, down-regulated expression of c-Maf in the 3′-UTR luciferase reporter assays. These present studies demonstrate for the first time global impact of activated FGF signaling in lens cell culture system and predicted novel gene regulatory networks connected by multiple miRNAs that regulate lens differentiation.
Incorporating Severity and Risk as Factors to the Fardal Cost‐Effectiveness Model to Create a Cost–Benefit Model for Periodontal Treatment
Authors: Martin John A. , Fardal Øystein , Page Roy C. , Loeb Carl F. , Kaye Elizabeth Krall , Garcia Raul I. , Linden Gerard J. 
Published: October 2013

Background: A previously described economic model was based on average values for patients diagnosed with chronic periodontitis (CP). However, tooth loss varies among treated patients and factors for tooth loss include CP severity and risk. The model was refined to incorporate CP severity and risk to determine the cost of treating a specific level of CP severity and risk that is associated with the benefit of tooth preservation.Methods: A population that received and another that did not receive periodontal treatment were used to determine treatment costs and tooth loss. The number of teeth preserved was the difference of the number of teeth lost between the two populations. The cost of periodontal treatment was divided by the number of teeth preserved for combinations of CP severity and risk.Results: The cost of periodontal treatment divided by the number of teeth preserved ranged from (US) $1,405 to $4,895 for high or moderate risk combined with any severity of CP and was more than $8,639 for low risk combined with mild CP. The cost of a three‐unit bridge was $3,416, and the cost of a single‐tooth replacement was $4,787.Conclusion: Periodontal treatment could be justified on the sole basis of tooth preservation when CP risk is moderate or high regardless of disease severity.
Serum Anticardiolipin Concentrations in Patients With Chronic Periodontitis Following Scaling and Root Planing
Authors: Chaston Reve , Sabatini Robert , Koertge Thomas E. , Brooks Carol N. , Schenkein Harvey A. 
Published: October 2013

Background: Anticardiolipin antibodies (antiCl), present in some patients with autoimmune disease, are associated with thrombosis, fetal loss, and other conditions. A significant proportion of patients with chronic periodontitis (CP) test positive for antiCl, likely because some periodontal pathogens contain antigens homologous to the target antigen of antiCl on the serum protein β‐2 glycoprotein‐I (β2GPI) and thus can induce antiCl by molecular mimicry. The authors hypothesized that treatment of periodontitis by scaling and root planing (SRP) could therefore decrease serum titers of antiCl in patients with CP.Methods: Thirty patients with CP received complete periodontal examinations at baseline including assessment of probing depth, attachment loss, gingival index, and plaque index. SRP was performed in two sessions at 2‐week intervals. Eight weeks later, patients were reexamined. Blood samples were taken at baseline, 2 weeks after the initial therapy appointment, and 8 weeks after the completion of treatment for assessment of immunoglobulin (Ig)G and IgM antiCl levels.Results: All periodontal parameters improved significantly. Consistent with previous observations, five (16.7%) of the 30 patients exhibited elevated levels of IgG or IgM antiCl at baseline. Following treatment, the concentrations of IgG and IgM antiCl remained unchanged for the entire cohort of 30 patients. However, in the five patients with elevated antiCl at baseline, IgM antiCl concentrations decreased significantly (P = 0.0008) owing to therapy, while IgG antiCl did not.Conclusion: The oral microflora is a likely source of antigen inducing antiCl in CP, since IgM antiCl levels can be reduced in the short term with conservative therapy.
Diagnosing the severity of buccal caries lesions in governmental and private orthodontic patients at debonding, using the ICDAS-II and the DIAGNOdent Pen
Authors: Almosa Naif A. , Lundgren Ted , Aldrees Abdullah M. , Birkhed Dowen , Kjellberg Heidrun 
Published: October 2013

ABSTRACTObjectives:To clinically evaluate the prevalence of buccal caries and white spot lesions (WSLs) at debonding in governmental and private orthodontic patients, using the International Caries Detection and Assessment System (ICDAS-II) and the DIAGNOdent Pen, and to study the correlation between the two methods.Materials and Methods:A cross-sectional study was carried out on the nonextracted premolars and anterior teeth of 89 orthodontic patients. They were recruited into two groups based on the treatment center they attended: governmental group (G; n  =  45) and private group (P; n  =  44). Immediately after debonding, the examination of buccal caries and WSLs on premolars and anterior teeth was carried out using the ICDAS-II and the DIAGNOdent Pen. Cross-tabulation was applied to study the correlation between the ICDAS-II index and the DIAGNOdent Pen by calculating the Spearman correlation coefficient.Results:The G group showed a significantly higher (P &lt; .0001) prevalence of WSLs and/or buccal caries compared to that of the P group based on evaluation by the two methods. Based on ICDAS-II, 43% of the patients in the P group and 9% in the G group were free from any WSLs. In the G group, 22% of the patients had ≥16 lesions, whereas there were none for the P group. The Spearman correlation coefficient between the two methods was .71.Conclusions:The prevalence of caries and/or WSLs at debonding was significantly higher in the G group compared to the P group. The clinical index (ICDAS-II) showed a good correlation with the DIAGNOdent Pen.
The Effect of Combustion of Natural Gas With 21–29% O2/CO2/N2Mixtures on Emission of Carbon Monoxide
Authors: Kalicka Zofia , Jerzak Wojciech , Cebula Elżbieta Kawecka 
Published: October 2013

Abstract
Natural gas combustion was carried out in air enriched with oxygen in the amount of 25 and 29% with addition of CO2 in place of part of nitrogen. The research was carried out at different flow rates of gas and oxygen excess ratios. The concentration of CO and NOx was analyzed. It has not been proved that the increased oxygen concentration influences significantly the CO concentration. However, the addition of CO2 caused a substantial variability of CO concentration in the exhaust gas, in contrast to the concentration of NOx which decreased monotonically. Model calculations, performed with use of FactSage, indicate an increase in the concentration of CO not only for the air enriched with oxygen, but after adding CO2 too, as well
Effect of the Application of Advanced Oxidation Technology on the Effectiveness of Anaerobic Treatment of Wastewaters with a High Concentration of Formaldehyde
Authors: Zieliński Marcin , Dębowski Marcin , Dudek Magda , Grala Anna 
Published: October 2013

Abstract
The objective of this study was to determine the effect of advanced oxidation process with the use of Fenton’s reaction on the effectiveness of anaerobic treatment of wastewaters originating from the wood industry that were characterized by a high concentration of formaldehyde. Experiments were established to analyze changes in COD content and in the concentration of formaldehyde in treated wastewaters, additional analyses were carried out to assay quantitative and qualitative changes in the biogas produced. The first stage of the experiment involved analyses of the effectiveness of the tested wastewaters treatment only in the process of methane fermentation. At the second stage of the experiment, the biological process was preceded by chemical pre-treatment of wastewaters with Fenton’s reagent. The conducted study proved that the investigated variants of chemical pre-treatment of wastewaters had a significant effect on increasing the total biogas production. In contrast, no significant effect of the applied technology was demonstrated on changes in the concentration of the analyzed contaminants in the treated wastewaters.
Integrated Land Evaluation for Sustainable Agricultural Production by Using Analytical Hierarchy Process
Authors: Sharififar Amin , Ghorbani Hadi , Karimi Haji 
Published: October 2013

Abstract
This study discusses sustainable agricultural production by land evaluation based on a multiple criteria approach. The study was carried out in the Bastam region located at the north Shahrood township of Semnan Province in the northeast of Iran. Soil, landscape and climatic data were collected to assess the study area based on its capability for cultivation of apple, tomato, wheat and white potato. Making the final decision for growing the most appropriate crop was based upon three criteria: (1) the physical suitability of the study area for crop cultivation; (2) environmental consideration; (3) economic benefit accruing from the production of each crop. The results of the assessment of the above criteria were incorporated using the Analytical Hierarchy Process (AHP) technique. Ultimately, wheat was found to be the most suitable crop for cultivation considering all the criteria in the study area. This study, therefore, was a step taken towards promoting sustainable agriculture by trying to introduce as efficient an approach as possible in land use planning, and selecting the most sustainable ways to put the land to optimum use.
Evaluation of Foals Sired by Stallions Belonging to Various Classes of Descent / Ocena Źrebiąt Po Ogierach O Różnym Pochodzeniu
Authors: Nienartowicz-Zdrojewska Anna , Różańska - Zawieja Jolanta , Sobek Zbigniew 
Published: October 2013

Abstract The evaluation concerned the progeny born to Polish pedigree stallions, to Polish-born stallions by imported sires, and to stallions imported to Poland. All traits (type, body conformation and development, health status and movement) were evaluated on a point scale. A highly significant effect of stallion on his progeny evaluation was observed. The highest mean for the total points in foal evaluation was noted for the offspring of imported sires. That class differed highly significantly from the foals by Polish-origin stallions and the foals by Polish-born stallions with imported sires. The gathered results clearly show the changes in purpose type over the years, and, consequently, in horse conformation. Horses have been becoming more noble in type, and their competitive potential has been increasing.
Nitrogen-Corrected Apparent Metabolizable Energy Value of Crude Glycerol for Laying Hens / Współczynnik Metaboliczności Energii Surowej Gliceryny Dla Kur Nieśnych
Authors: Németh Klaudia , Zsédely Eszter , Schmidt János 
Published: October 2013

Abstract An experiment was conducted with 64 Tetra SL laying hens (placed into four groups) to determine the AMEn value of feed grade crude glycerol (DM 92%; glycerol 86.80%; methanol 0.04%; fat 0.49%; ash 4.67%; GE 15.59 MJ/kg). All groups were given a 100 g basal diet per day (AMEn value 11.46 MJ/kg; protein 16.97%; Ca 3.49%; P (non-phytate) 0.56%; lysine 0.82%; methionine 0.40%; cysteine 0.29%; threonine 0.60%; tryptophan 0.19%), which was supplemented with 5%, 7.5% and 10% glycerol for the three experimental groups. Hens were placed in metabolism cages (4 hens/treatment in four replicates). After a 10-day adaptation period, excreta was collected and weighed individually for 10 days. The AMEn value of crude glycerol (86%) was calculated as 15.30 MJ/kg for laying hens. During the experiment, egg production (90.0-90.8%), egg weight (56.8-58.0 g) and egg mass (51.2-52.7 g) were not affected by dietary treatments. Feed conversion was significantly reduced by a 10% glycerol supplementation. We concluded that crude glycerol’s energy is efficiently used by laying hens, and more efficiently than by broilers. The established 15.30 MJ/kg AMEn value of crude glycerol when fed in the daily ration to laying hens means that they utilized 97.6% of the glycerol’s GE content.
Analysis of the cumulative exergy consumption of an integrated oxy-fuel combustion power plant
Authors: Ziębik Andrzej , Gładysz Paweł 
Published: October 2013

Abstract
In order to analyze the cumulative exergy consumption of an integrated oxy-fuel combustion power plant the method of balance equations was applied based on the principle that the cumulative exergy consumption charging the products of this process equals the sum of cumulative exergy consumption charging the substrates. The set of balance equations of the cumulative exergy consumption bases on the ‘input-output method’ of the direct energy consumption. In the structure of the balance we distinguished main products (e.g. electricity), by-products (e.g. nitrogen) and external supplies (fuels). In the balance model of cumulative exergy consumption it has been assumed that the cumulative exergy consumption charging the supplies from outside is a quantity known a priori resulting from the analysis of cumulative exergy consumption concerning the economy of the whole country. The byproducts are charged by the cumulative exergy consumption resulting from the principle of a replaced process. The cumulative exergy consumption of the main products is the final quantity.
Optimization of idealized ORC in domestic combined heat and power generation
Authors: Rybiński Witold , Mikielewicz Jarosław 
Published: October 2013

Abstract
Organic Rankine cycle (ORC) is used, amongst the others, in geothermal facilities, in waste heat recovery or in domestic combined heat and power (CHP) generation. The paper presents optimization of an idealized ORC equivalent of the Carnot cycle with non-zero temperature difference in heat exchangers and with energy dissipation caused by the viscous fluid flow. In this analysis the amount of heat outgoing from the ORC is given. Such a case corresponds to the application of an ORC in domestic CHP. This assumption is different from the most of ORC models where the incoming amount of heat is given.
Entropy increase as a measure of energy degradation in heat transfer
Authors: Drożyński Zbigniew 
Published: October 2013

Abstract
Heat transfer is an irreversible process. This article defines the entropy increment as a measure of energy degradation in heat transfer realized in typical surface heat exchangers. As an example of the proposed entropy increase method, presented below are the calculations for heat exchangers working in a typical Clausius-Rankine cycle. The entropy increase in such exchangers inevitably leads to increased fuel consumption and, as a further consequence, to increased carbon dioxide emission.
Alpha-tocopherol and ergocalciferol contents of some macroalgae from Bulgarian Black Sea coast
Authors: Panayotova Veselina , Stancheva Mona , Dobreva Diana 
Published: October 2013

AbstractThe aim of the present study was to determine and compare _-tocopherol and ergocalciferol content in four macroalgae from Bulgarian Black sea coast. Ulva rigida, Cladophora vagabunda, Cystoseira barbata and Cystoseira crinita were used for evaluation of corresponding fat soluble vitamins content. The sample preparation procedure includes alkaline saponification, followed by liquid-liquid extraction. Ergocalciferol (vitamin D2) and α-tocopherol (vitamin E) were analyzed simultaneously using HPLC/UV/FL system (Thermo Scientific Spectra SYSTEM) equipped with RP analytical column. The mobile phase was composed of 97:3 = MeOH:H2O. Ergocalciferol was monitored by UV detection at λmax = 265nm, while α-tocopherol was detected by fluorescence at λex=288nm and λem=332nm. Alpha-tocopherol content in algal tissues ranged from 1.68±0.38mg/100g d.w. in Cladophora vagabunda to 29.13±1.08mg/100g d.w. in Cystoseira barbata. Ergocalciferol was detected only in Ulva rigida samples.
Nitrite determination in spices
Authors: Dobrinas Simona , Soceanu Alina , Popescu Viorica , Stanciu Gabriela 
Published: October 2013

AbstractThe aim of this study is to determine the nitrite content in some spices: basil, pepper, dill, thyme, oregano, bay leaves, cinnamon, mint, mustard and cumin. The nitrite content was measured using UV-VIS spectrometric method with Griess reagent. The method was tested and partial validated. The nitrite content varied from 0.23 to 7.7 mg/Kg and these values are lower than those encountered in the literature.