Miracle-dz/UniFAR-FTUs huggingface dataset:
Influence of Reduced Nitrogen Diets on Ammonia Emissions from Cattle Feedlot Pens

Reducing crude protein (CP) in livestock diets may lower ammonia emissions. A feeding trial was conducted with crossbred steers at the Southeast Colorado Research Center in Lamar, Colorado from December 2009 to March 2010. Three diet treatments were investigated: Reduced (11.6% CP), Oscillating (13.5% crude protein 4 days/week and 11.6% CP 3 days/week) and Control (13.5% CP). Intact soil core samples (n = 36 per sampling date) were collected from the pen surfaces on three dates corresponding to 45, 92, and 148 days into the feeding cycle. Four pens from each diet treatment were sampled. Cores were placed into flow-through laboratory chambers for seven days and ammonia fluxes were trapped in acid bubblers that were refreshed every 24 h. Average daily ammonia emissions for the Control diet ranged from 6.6 to 9.4 g NH3 m−2·day−1; average daily emission for the Oscillating diet ranged from 6.3 to 8.8 g NH3 m−2·day−1; and average daily flux for the Reduced diet ranged from 4.1 to 5.8 g NH3 m−2·day−1. Ammonia fluxes from the reduced N treatment were significantly lower (21% to 40%) than from the control diet on the first two sample dates. There was no significant difference between the Oscillating and Control treatments. Reducing CP in cattle feedlot diets may be an effective method for reducing ammonia emissions from pen surfaces. More research is needed to validate these results at commercial scales in different environments to determine if reductions in ammonia can be sustained with lower CP diets without affecting rate of gain, feed efficiency and health.
An In Vitro Study of the Number of Distal Roots and Canals in mandibular First Molars in Iranian Population

INTRODUCTION: The purpose of this study was to evaluate the number of distal roots and canals in mandibular first molars and their internal anatomy radiographically within Iranian population. MATERIALS AND METHODS: A total of 310 distal roots of mandibular first molars were incorporated in this study and evaluated in terms of number of roots and number and types of canals. Root canal systems were studied in vitro by means of radiography and based on Vertucci’s classifications. RESULTS: It was shown that 4.5% of the teeth in this study had two distal roots, of which, 100% indicated type I for both distobuccal and distolingual roots. Among all the teeth, 43.2% had two canals, 24.2% two apical foramina, and 38.7% two orifices in their distal roots. According to Vertucci’s classification 54.9% of the teeth were type I, 19% type II, 1.9% type III, 14.2% type IV, 4.2% type V, 1% type VI, 0.3% type VII and 0% type VIII. CONCLUSION: In as many as 43.2% of all teeth assessed in this study, bicanaled distal roots were observed, dentists are always recommended to search for the second canal in distal roots of mandibular first molars. In case the second canal in the distal root is missed, failure of endodontic treatment will be anticipated. A rectangular type access cavity design allows better visualization and negotiation of the probable second canals within the distal roots of mandibular first molars.
A simulation study of delay and delay variation in ATM networks .I. CBR traffic

Through comprehensive simulation studies, we have evaluated the ATM layer end-to-end performance of a constant bit rate (CBR) MPEG2 connection. For most practical cases that we have considered, a cell delay variation (CDV) value of 160 /spl mu/sec is obtained (using 155 Mbps OC-3 rate), well below the 1 msec worst case stated in prior studies. The results also indicate that the uniform distribution proposed in the ATM Forum provides a pessimistic model for the cell delay variation. We demonstrate that a gamma distribution adequately models the cell delay and delay variation (CDV). We also study the effect of various network/source parameters (such as the background load, the number of background sources, the number of hops, and the link-speed) on the variances of CDV and the end-to-end delay of the reference connection. Finally, we examine the variation in the cell delay correlation of a reference connection with the above parameters. We show that the correlation is a decreasing non-periodic/periodic function if the reference CBR is multiplexed with the same/other classes of CBR connections.
Voices of university students with disabilities: inclusive education on the tertiary level – a reality or a distant dream?

Twenty-four university students with disabilities were interviewed about their experiences studying at Czech universities. The interviews were analysed using the grounded theory approach. The most commonly experienced barriers faced by these students were institutional barriers, attitudinal barriers, and disability-specific barriers. The types of support mentioned by the students included family support, peer support, and support provided by assistants. The participants also shared strategies they used to deal with the barriers they faced. These were assertiveness, self-determination, metacognition, efforts to ‘fit in’, optimism, and career planning. The implications for policy and universities are discussed.
Women who traffic women: the role of women in human trafficking networks – Dutch cases

In the context of human trafficking, women are frequently portrayed as victims, whereas men are usually seen as offenders. In this article, we will demonstrate that women can also fulfil active, even leading, roles in human trafficking networks. Based on data collected from 89 court files in various Dutch courts in 2006–2007, we have analysed the role, tasks, and activities of these women. Assessing their independence, their tasks, and the extent of their equality in relationships with male traffickers, we have divided them into three categories: supporters, partners-in-crime, and madams. We have found that there is a wide variety of possible roles within the framework of human trafficking activities, and that African madams hold key positions in international human trafficking networks.
Narrative and Identity in the “Language Learning Project”

This article reports on a study that analysed life history accounts of language learning. The key aim of the study was to understand how the experience of language learning was discursively constructed through recourse to particular cultural worlds and narrative strategies. The study contributes to the growing field of research using language learning histories to extend our understanding of the learner as a social actor who derives and acts upon different identity positions that are institutionally and culturally situated but that are also dynamic and individually interpreted. Using the ethnographic concept of “figured worlds” (Holland, Lachiotte, Jr., Skinner, & Cain, 1998), we report here how participants—British adults who have learned a foreign language to a high level of proficiency—structure the “language learning project” through discursive representations of social structures meshed with personalised narratives of individual experience. By combining theoretical and methodological frames for narrative inquiry with an ethnographic perspective, we were able to identify a number of discursive worlds, both material and symbolic, that are figured into the autobiographical accounts. In the concluding discussion, we offer some possible directions for extending this type of investigation and also suggest some practical ways in which our analysis might enrich the teaching and learning of foreign languages.
Use of the Metastatic Lymph Node Ratio to Evaluate the Prognosis of Esophageal Cancer Patients with Node Metastasis Following Radical Esophagectomy

Objectives The objective of this study was to investigate the number of metastatic lymph nodes (pN) and the metastatic lymph node ratio (MLR) on the post-surgical prognosis of Chinese patients with esophageal cancer (EC) and lymph node metastasis. Methods We enrolled 353 patients who received primary curative resection for EC from 1990 to 2003. The association of pN and MLR with 5-year overall survival (OS) was examined by receiver operating characteristic (ROC) and area under the curve (AUC) analysis. The Kaplan-Meier method was used to calculate survival rates, and survival curves were compared with the log-rank test. The Cox model was employed for univariate and multivariate analyses of factors associated with 5-year OS. Results The median follow-up time was 41 months, and the 1-, 3- and 5-year OS rates were 71.2%, 30.4%, and 19.5%, respectively. Univariate analysis showed that age, pN stage, and the MLR were prognostic factors for OS. Patients with MLRs less than 0.15, MLRs of 0.15-0.30, and MLRs greater than 0.30 had 5-year OS rates of 30.1%, 17.8%, and 9.5%, respectively (p < 0.001). Patients classified as pN1, pN2, and pN3 had 5-year OS rates of 23.7%, 11.4%, and 9.9%, respectively (p < 0.001). Multivariate analysis indicated that a high MLR and advanced age were significant and independent risk factors for poor OS. Patients classified as pN2 had significantly worse OS than those classified as pN1 (p = 0.022), but those classified as pN3 had similar OS as those classified as pN1 (p = 0.166). ROC analysis indicated that MLR (AUC = 0.585, p = 0.016) had better predictive value than pN (AUC = 0.565, p = 0.068). Conclusions The integrated use of MLR and pN may be suitable for evaluation of OS in Chinese patients with EC and positive nodal metastasis after curative resection.
Spectrum-Aware Geographic Routing in Cognitive Vehicular Ad Hoc Network Using a Kalman Filter

We propose a position-based routing protocol for cognitive radio vehicular ad hoc networks (CR-VANETs) using a Kalman filter algorithm. The protocol first selects an idle channel from among all the channels available to a vehicle while moving on a straight road and then finds the best relay node to deliver the packet to the destination. The selection of a relay node is done by dividing the vehicular transmission range into five regions, and then the source/relay node selects the one that is in the region having a higher preference than other regions. Communication between two vehicles occurs only when both the vehicles are on the same channel. Delay may increase while sensing the channel and selecting the relay node. To reduce the delay, we use a Kalman filter to predict the future positions of all moving vehicles in the network. We consider vehicle-to-vehicle communication and compare our protocol for different probabilities of primary user being idle. Our proposed protocol shows improvement in both packet delivery ratio and end-to-end delay.
Multicultural counseling competencies: Verbal content, counselor attributions, and social desirability.

This study investigated the validity of 2 instruments designed to measure the multicultural counseling competencies (MCC). Fifty-five counselors participated in a counseling simulation involving a videotaped portrayal of a female Mexican American client at a predominantly White university. Counselors made attributions about the causes of the client's problem and completed a self-report MCC scale and a social desirability scale. Independent judges evaluated counselors' verbal responses for multicultural content and observed MCC. Results indicate that (a) there was little relation between self- and other-rated MCC, in which only self-reported MCC knowledge was a predictor of observed MCC; (b) self-reported MCC was positively associated with social desirability; and (c) observed MCC was positively associated with sociocultural etiology attributions, external locus of the cause attributions, and multicultural verbal content.
Social identity and spatial behaviour: The relationship between national category salience, the sense of home, and labour mobility across national boundaries

This study explores the impact of manipulating the salience of national categories upon the willingness of highly identifying Scots to take up either short-term or long-term jobs in Scotland as compared to England. The results support the hypotheses (a) that high-identifying Scots increase preference for intra- over extranational locations when national categories are salient, (b) that this effect is fully mediated by “fitting in”—that is, the sense of being “at home” in Scottish as compared to English locations, and (c) that these relationships only hold for long-term as opposed to short-term jobs. We discuss these results in terms of the impact of identity definitions upon spatialised action and the economic/political importance of this relationship.
Deutero-Learning: Implications for Managing Public Health Change.

Purpose – The purpose of this paper is to apply an allied health subculture model to clarify key contextual factors that can emerge in the evolution of an allied health subculture as a consequence of deutero‐learning.Design/methodology/approach – Two case studies are compared to illustrate these two extreme variations in deutero‐learning.Findings – The first case – characterised by pathological deutero‐learning – operated within the classical medical model. A learning pathology that developed in this situation was a fractured, divisive, self absorbed work culture. A second case – characterised by positive deutero‐learning – operated within a divisional structure characterized by integrated decentralization. What was learned as a result of operating within this alternative organisational structure is that effective management of allied health recognizes two governance arenas: governance required for managing professionals and governing principles for delivering clinical services. Positive deutero‐learning .
Effects of Prednisolone on Disease Progression in Antiretroviral-Untreated HIV Infection: A 2-Year Randomized, Double-Blind Placebo-Controlled Clinical Trial

Background HIV-disease progression correlates with immune activation. Here we investigated whether corticosteroid treatment can attenuate HIV disease progression in antiretroviral-untreated patients. Methods Double-blind, placebo-controlled randomized clinical trial including 326 HIV-patients in a resource-limited setting in Tanzania (clinicaltrials.gov NCT01299948). Inclusion criteria were a CD4 count above 300 cells/μl, the absence of AIDS-defining symptoms and an ART-naïve therapy status. Study participants received 5 mg prednisolone per day or placebo for 2 years. Primary endpoint was time to progression to an AIDS-defining condition or to a CD4-count below 200 cells/μl. Results No significant change in progression towards the primary endpoint was observed in the intent-to-treat (ITT) analysis (19 cases with prednisolone versus 28 cases with placebo, p = 0.1407). In a per-protocol (PP)-analysis, 13 versus 24 study participants progressed to the primary study endpoint (p = 0.0741). Secondary endpoints: Prednisolone-treatment decreased immune activation (sCD14, suPAR, CD38/HLA-DR/CD8+) and increased CD4-counts (+77.42 ± 5.70 cells/μl compared to -37.42 ± 10.77 cells/μl under placebo, p < 0.0001). Treatment with prednisolone was associated with a 3.2-fold increase in HIV viral load (p < 0.0001). In a post-hoc analysis stratifying for sex, females treated with prednisolone progressed significantly slower to the primary study endpoint than females treated with placebo (ITT-analysis: 11 versus 21 cases, p = 0.0567; PP-analysis: 5 versus 18 cases, p = 0.0051): No changes in disease progression were observed in men. Conclusions This study could not detect any significant effects of prednisolone on disease progression in antiretroviral-untreated HIV infection within the intent-to-treat population. However, significant effects were observed on CD4 counts, immune activation and HIV viral load. This study contributes to a better understanding of the role of immune activation in the pathogenesis of HIV infection. Trial Registration ClinicalTrials.gov NCT01299948
Home Blood Pressure Control After the Great East Japan Earthquake in Patients on Chronic Hemodialysis

At 14:46 on 11 March 2011, northeastern Japan was struck by a major earthquake measuring 9.0 on the Richter scale (the Great East Japan Earthquake). Several reports have suggested a transient blood pressure (BP) increase after a major earthquake, but its impact on BP in chronic dialysis patients has not been reported. In a retrospective review of 25 hemodialysis patients who were residents of Koriyama City, changes in the morning home BP after the earthquake were investigated. Home systolic and diastolic BPs were significantly elevated 1 week after the earthquake (158 ± 16 mm Hg vs. 151 ± 13 mm Hg, P < 0.01, for systolic; 81 ± 13 mm Hg vs. 78 ± 11 mm Hg, P = 0.01, for diastolic). Mean home BP 1 week after the earthquake was unchanged from baseline in patients treated with sympatholytics and/or renin‐angiotensin system (RAS) inhibitors. BP values returned to baseline by 4 weeks after the earthquake, but percent changes in mean BP were significantly greater even 2 weeks, 4 weeks, and 6 weeks after the earthquake in patients not treated with RAS inhibitors than in those treated with RAS inhibitors (2 weeks 7.0% ± 4.5% vs. 0.2% ± 5.0%, P < 0.01; 4 weeks 4.4% ± 5.9% vs. −1.8% ± 5.3%, P = 0.02; 6 weeks 4.6% ± 4.9% vs. −1.9% ± 3.9%, P < 0.01). On multiple regression analysis, RAS inhibitor use had an independent relationship with percentage increases in mean BP during the 6 weeks after the earthquake. Home BP was significantly increased after a major earthquake in patients on chronic hemodialysis. Prolonged deterioration of BP control after the earthquake was associated with non‐use of RAS inhibitors.
A Comparison Group Study of Solution-Focused Therapy versus “Treatment-as-Usual” for Behavior Problems in Children

Abstract Behavior problems are the most common reason that children and adolescents are referred to treatment. This study presents a rationale for the application of solution-focused therapy to behavior problems and tests this assumption. Children who were referred from the school setting for behavior problems (N = 239) were treated with either solution-focused therapy or “treatment-as-usual” at a school of social work-sponsored mental health clinic. Hypotheses for this quasi-experimental, pretest/posttest design were that treatment engagement would be higher in the solution-focused therapy group and that the solution-focused therapy group children over the “treatment-as-usual” group would show greater improvement according to both parent and child reports. Logistic regression and MANOVA were the data analysis procedures to test hypotheses. Findings were as follows; the solution-focused therapy group had better treatment engagement, but there were no statistically significant differences between groups on perceptions of child behaviors from either parents (Conners Parent Rating Scale) or child reports (Feelings, Attitudes, and Behaviors Scale for Children). An examination of pre-and posttest differences over time for each group indicated similar improvements in treatment according to parent reports. Implications for practice and research are discussed.
Effect of nanocavities on Ge nanoclustering and out-diffusion in SiO2

Germanium nanocrystals (Ge-ncs) were synthesized by implantation of Ge+ ions into the fused silica, followed by a thermal annealing at 1000 °C. High-resolution transmission electron microscopy was employed to characterize both the morphology of the formed Ge-ncs and the evolution of their depth-distribution as a function of annealing durations. The formation of nanocavities in the vicinity of nanocrystal/SiO2 interface is evidenced, as well as their influence on the release of the compressive stress exerted on Ge-ncs by surrounding SiO2. Some Ge-ncs are found inside nanocavities, and can move into the implanted layer through a nanocavity-assisted diffusion mechanism. This finding sheds light on a new process that can explain the non-uniformity of the Ge-nanocrystal spatial distribution.
Optimal Reference Frame Search Algorithm for Better Restoration of Image Sequences Distorted by Turbulence of the Medium

This paper presents a novel approach in image restoration based on calculating the pixel shift-maps of geometrically distorted images in a video sequence and using these maps to obtain non-distorted frames by de-warping the originals. In the similar previous approaches, the reference frame in the image registration process for pixel shift-maps calculation is selected either using a blind image quality metric or simply using the first frame. However, the former technique may not estimate the best frame accurately in the sense of geometric distortion. As for the latter, there is always a possibility that the first frame is one of the most distorted ones in the sequence. In the proposed method, an optimal reference frame search algorithm is introduced to improve the quality of restored frames and to yield a stable video output. The proposed method was applied both to synthetic and real data sets, and simulation results show significant improvement in comparison to the state-of- the-art methods.
Genome-wide DNA methylation profiles in hematopoietic stem and progenitor cells reveal overrepresentation of ETS transcription factor binding sites

DNA methylation is an essential epigenetic mark that is required for normal development. Knockout of the DNA methyltransferase enzymes in the mouse hematopoietic compartment reveals that methylation is critical for hematopoietic differentiation. To better understand the role of DNA methylation in hematopoiesis, we characterized genome-wide DNA methylation in primary mouse hematopoietic stem cells (HSCs), common myeloid progenitors (CMPs), and erythroblasts (ERYs). Methyl binding domain protein 2 (MBD) enrichment of DNA followed by massively parallel sequencing (MBD-seq) was used to map genome-wide DNA methylation. Globally, DNA methylation was most abundant in HSCs, with a 40% reduction in CMPs, and a 67% reduction in ERYs. Only 3% of peaks arise during differentiation, demonstrating a genome-wide decline in DNA methylation during erythroid development. Analysis of genomic features revealed that 98% of promoter CpG islands are hypomethylated, while 20%–25% of non-promoter CpG islands are methylated. Proximal promoter sequences of expressed genes are hypomethylated in all cell types, while gene body methylation positively correlates with gene expression in HSCs and CMPs. Elevated genome-wide DNA methylation in HSCs and the positive association between methylation and gene expression demonstrates that DNA methylation is a mark of cellular plasticity in HSCs. Using de novo motif discovery, we identified overrepresented transcription factor consensus binding motifs in methylated sequences. Motifs for several ETS transcription factors, including GABPA and ELF1, are overrepresented in methylated regions. Our genome-wide survey demonstrates that DNA methylation is markedly altered during myeloid differentiation and identifies critical regions of the genome and transcription factor programs that contribute to hematopoiesis.
Donation by default?: Examining feminist reservations about opt-out organ procurement

There is reason to believe that procuring organs from recently dead people who did not explicitly refuse to provide them—here referred to as "opt-out" arrangements—would ease growing shortages, thus extending the lives of many who otherwise would die soon. There is also a simple, apparently powerful argument—the "easy rescue requirement"—for believing that many people have strong moral reason to provide such life-extending support to others, thus bolstering the case for implementing opt-out systems. Here I consider two broad types of feminist reservations about opt-out arrangements, one concerning the motivating argument, the other concerning ways in which opt-out practices might disproportionately burden women. I conclude that both reservations can be answered sufficiently so as to encourage further feminist reflection on opt-out proposals and easy rescue arguments.