bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aflatoxin M1 occurrence in fluid milk commercialized in Monterrey, Mexico
Authors: Quevedo‐Garza Patricia Amanda , Amador‐Espejo Genaro Gustavo , Cantú‐Martínez Pedro Cesar , Trujillo‐Mesa José Antonio 
Published: November 2018

AbstractThe occurrence of aflatoxin M1 (AFM1) in milk samples commercialized in the Metropolitan area of Monterrey (Mexico) was evaluated by employing the competitive enzyme linked immunosorbent assay (ELISA) technique. For this, 84‐fluid milk samples, with diverse origin (80% national production, 20% imported milk) and heat treatments (26% pasteurized and 74% Ultra High Temperature (UHT)‐treated) were collected in different sales points. In all the evaluated samples, the AFM1 was detected, with values oscillating from 0.1 to 1.27 μg/L. According to the Food and Drug Administration (FDA) and Mexican standards, concerning a maximum limit of 0.5 μg/L, 39% of the analyzed samples were out of the standard limit, with different results depending on the milk origin (46% and 18% for national and imported milks, respectively) and heat treatment applied (45% and 23% for UHT and pasteurized samples, respectively). Based on these results, it is necessary a higher effort to control AFM1 levels in milk consumed in Mexico.Practical applicationsThe practical application of this document is to serve as a first approach to know the presence of aflatoxins in milk in northern Mexico, both in domestic and imported products, and under different heat treatments applied and from this, take different measures by authorities and producers with a view to reducing their presence in milk and other dairy products.
Organization Environmental Footprint through Input‐Output Analysis: A Case Study in the Construction Sector
Authors: Martinez Sara , Delgado Maria del Mar , Martinez Marin Ruben , Alvarez Sergio 
Published: November 2018

SummaryThe implementation of global sustainability has gained worldwide attention in recent years. The Organization Environmental Footprint, which encompasses 14 impact categories, is a multicriteria measure of the environmental performance of goods and services provided by an organization from a life cycle perspective. In this article, the focus is on quantifying the Organization Environmental Footprint of a construction company in Spain. By applying an environmentally extended input‐output approach, its total footprint and impacts along the supply chain from two consecutive years were calculated. The results show that the environmental impacts from the second year of implementation were significantly higher than those from the first year. The impact category climate change was found to have experienced the greatest increase from one year to the other, with a 31% increase. This work provides an overview of 14 environmental impact categories of the company assessed, as well as recommendations for the implementation of this indicator in companies and public procurement. This approach could pave the way to shape organizations’ action plans and meet the European environmental challenges.
Impact of right heart function on outcome in patients with functional mitral regurgitation and chronic heart failure undergoing percutaneous edge‐to‐edge‐repair
Authors: Osteresch Rico , Diehl Kathrin , Kühl Matthias , Fiehn Eduard , Schmucker Johannes , Backhaus Tina , Fach Andreas , Wienbergen Harm , Hambrecht Rainer 
Published: November 2018

AimsTo evaluate the impact of right ventricular dysfunction (RVD) on outcome after transcatheter mitral valve repair (TMVR) in patients with chronic heart failure (CHF) and severe functional mitral regurgitation (FMR).Methods and ResultsOne hundred thirty patients (median age 72.7 ± 10.7 years; 63.8% male) at high operative risk (LogEuroSCORE 23.8 ± 13.9%) with FMR and CHF (left ventricular ejection fraction 32 ± 7%) were enrolled and separated into two groups according to the RVD. RVD was assessed by the tricuspid annular plane systolic excursion (TAPSE) method (A: TAPSE ≤ 16 mm, n = 58; B: TAPSE > 16 mm, n = 72). The rate of successful reduction of mitral regurgitation (MR ≤2+) by TMVR was similar in both groups (94.6% vs 91.2%; P: n.s.) with low in‐hospital major adverse event rates. During a median follow‐up period of 10.5 ± 4 months, the Kaplan‐Meier analysis revealed a significantly higher all‐cause mortality in group A (43.1% vs 23.6%; log‐rank P = 0.039) and a significantly higher rate of hospital readmission due to congestive heart failure (56.9% vs 26.4%; log‐rank P < 0.001). At long‐term follow‐up, 25% of patients in group A remained in NYHA functional class IV (none in group B). Preexisting RVD as assessed by TAPSE and Doppler tissue imaging (DTI‐S‘) was an independent predictor of all‐cause mortality after TMVR (hazard ratio 2.84; 95% confidence interval 1.15‐7.65; P = 0.039; hazard ratio 4.70; 95% confidence interval 1.14‐20.21; P = 0.044, respectively).ConclusionsPatients with CHF and RVD were with regard to functional capacity less often responder and showed an unfavorable long‐term outcome. Thus, patients with CHF and RVD seem to benefit less frequently from TMVR.
Sleep duration in Mexican American children: Do mothers’ and fathers’ parenting and family practices play a role?
Authors: Martinez Suzanna M. , Tschann Jeanne M. , Butte Nancy F. , Gregorich Steve E. , Penilla Carlos , Flores Elena , Pasch Lauri A. , Greenspan Louise C. , Deardorff Julianna 
Published: November 2018

SummaryThis study examined parenting styles, parenting practices and family practices that may be associated with weeknight sleep duration among 8‐ to 10‐year‐old Mexican American (MA) children. This cross‐sectional study of MA children used baseline data from a 2‐year cohort study of mother–child pairs (n = 308) with additional data on fathers (n = 166). Children's weeknight sleep duration was accelerometer estimated and averaged for 2 weeknights. Parents reported on their parenting styles and practices regarding food and family food‐related practices. Multivariable linear regression analysis was used to examine sleep duration with parenting styles and practices, and family practices, and adjusting for child gender and body mass index. Model 1 included mothers’ parenting styles and practices; Model 2 included both mothers’ and fathers’ parenting styles and practices. Children's average sleep duration was 9.5 (SD = 0.8) hr. Mothers who used pressure to encourage their children to eat and those who used food to control behavior had children with longer sleep duration (β = 0.21, p < 0.01; β = 0.15, p = 0.03, respectively). Mothers who reported their children ate dinner with the TV on and those who valued eating dinner as a family had children with shorter sleep duration (β = −0.16, p = 0.01; β = −0.18, p = 0.01, respectively). Fathers who restricted the amount of food their children ate had children with shorter sleep duration (β = −0.27, p = 0.01). Mothers’ and fathers’ feeding practices, the child's eating dinner with the TV on, and valuing family dinners, played a role in children's weeknight sleep duration among Mexican American families. Parental feeding practices and family mealtime contexts may have an effect on children's weeknight sleep duration.
“Lord, Have Mercy on Me, a Sinner”: Aquinas on Grace, Impetration, and Justification
Authors: Colberg Shawn 
Published: November 2018

AbstractThis article explores St. Thomas Aquinas's doctrine of grace for the way in which it heals and moves the sinner towards justification. It exposits Thomas's use of the language of “impetration” to express a causal yet non-meritorious role for human action, and it applies this conception to the free will's movement in justification. It argues that Thomas understands the prayer of a sinner to illumine the way in which God's infallible and predestinating will unfolds through human actors without destroying their contingent nature. To that end, it first exposits critical points in Thomas's doctrine of grace, including the notions of habitual grace and auxilium, intact and fallen human nature, and operative and cooperative grace. It then introduces the language of impetration for the way in which it elucidates a valuable role for human action in justification. It concludes that impetration illustrates the on-going perfection of nature in such a way that God's grace draws human beings into the causal sequence of divine providence. The sinner's impetration captures the indispensable movement of the free will while recognizing that, in its appeal to divine mercy, it has already been graced by God and cannot earn the gift of justification.
Left atrial appendage electrical isolation for persistent atrial fibrillation
Authors: Madaffari Antonio , Große Anett , Conci Elisabetta , Geller J. Christoph 
Published: November 2018

AbstractLeft atrial appendage (LAA) may be the source for initiation and maintenance of atrial fibrillation (AF). This report shows restoration of sinus rhythm in the atria during radiofrequency wide‐area LAA electrical isolation, whereas AF persists in the LAA.
Effects of an educational program on disaster nursing competency
Authors: Huh Seong‐Soo , Kang Hee‐Young 
Published: November 2018

AbstractObjectiveThe purpose of this study was to examine the effects of an educational program on disaster nursing competency among Korean nursing students.Design and SampleA quasi‐experimental design with a nonequivalent control group was used. We randomly assigned 60 junior nursing students from two nursing colleges in Korea to an experimental group (n = 30) and a control group (n = 30).MeasuresA disaster educational program for nursing students was developed based on the International Council of Nurses framework of disaster nursing competencies. The program sought to teach nursing activities by stage of disaster (i.e., prevention/mitigation, preparedness, response, and recovery/rehabilitation). Disaster nursing knowledge, disaster triage, and disaster readiness were measured as dependent variables.ResultsCompared with the control group, the experimental group showed a significant increase in disaster nursing knowledge (t = 14.37, p < 0.001), disaster triage (t = 7.90, p = 0.002), and disaster readiness (t = 10.82, p < 0.001).ConclusionThe disaster educational program developed in this study was effective in increasing disaster nursing competency among nursing students and is therefore a useful intervention strategy for nursing students.
GPS precise point positioning for UAV photogrammetry
Authors: Grayson Ben , Penna Nigel T. , Mills Jon P. , Grant Darion S. 
Published: November 2018

AbstractThe use of Global Positioning System (GPS) precise point positioning (PPP) on a fixed‐wing unmanned aerial vehicle (UAV) is demonstrated for photogrammetric mapping at accuracies of centimetres in planimetry and about a decimetre in height, from flights of 25 to 30 minutes in duration. The GPS PPP estimated camera station positions are used to constrain estimates of image positions in the photogrammetric bundle block adjustment, as with relative GPS positioning. GPS PPP alleviates all spatial operating constraints associated with the installation and the use of ground control points, a local ground GPS reference station or the need to operate within the bounds of a permanent GPS reference station network. This simplifies operational logistics and enables large‐scale photogrammetric mapping from UAVs in even the most remote and challenging geographic locations.
Culture‐dependent diversity of boron‐tolerant bacteria from boron mine tailings pond and solid wastes
Authors: Nural Yaman Belma , Deniz Sonmez Gorkem , Aytar Celik Pinar , Korkmaz Ferhan , Mutlu Mehmet Burcin , Cabuk Ahmet 
Published: November 2018

AbstractBoron is a vital micronutrient for the growth of plants and different organisms. However, boron may be toxic to living cells at high concentrations. Nevertheless, microorganisms can be grown in harsh conditions such as environments with higher boron concentrations. It is also known that boron‐tolerant microorganisms have significant biotechnological potentials. In this study, it is aimed to isolate microorganism from a boron containing place in Kırka, Eskişehir using culture‐dependent methods. After extracting genomic DNAs, Amplified Ribosomal DNA Restriction Analysis (ARDRA) profiles were constructed with HaeIII, MspI, HinfI‐HpaII and AluI‐CfoI. Sequence analyses were performed by chain‐terminating method. Consensus sequences were completed and similarities were determined by RDP Release 11. According to ARDRA, 10 profiles and five different species such as Pseudomonas sp., Enterecoccus sp., Acinetobacter sp., Bacillus sp. and Halomonas sp. were identified.
An Investigation on Microstructural Evolution of X70 Steel Pipe During Hot Induction Bending
Authors: Meschian Moe , Duncan Andy , Yarmuch Matt , Myschuk Fred 
Published: November 2018

It is generally accepted that hot induction bending (HIB) results in a decrease in strength and an increase in fracture toughness in bend area, heat affected zone (HAZ) and weld metal (WM). As the result, Post bend heat treatment (PBHT) is not considered to be a requirement and could be waived for saving money and time. This research work raises the concern that factual verification of proper microstructure and no localized brittle zone is vitally necessary prior to waving PBHT.
Evaluation of the steel microstructure and mechanical properties as the result of various pipe chemistries during pipe bending has been verified in this experimental work. It is emphasized that knowledge and control of prior steel pipe chemistry, control of temperature, cooling rate and bending speed assures the reliability and repeatability of induction bends, especially in critical environments such as low temperature application.
In the present work, qualitative and quantitative microstructural analysis, hardness and impact test performed and evaluated on samples from X70 line pipe with 3 different steel chemistries. The samples prepared from different locations on body, weld and HAZ in the as received and as bent condition. It was found that the final microstructure and mechanical properties in the as bent condition is dependent on the chemistry, steel cleanliness and microstructural uniformity. It was observed that small localized brittle zone with traces of upper Bainite and Martensite islands could be transformed in the microstructure with rich chemistry containing non-homogenous central segregation. It is concluded that factual verification of proper microstructure with no localized hard zone is required prior to waving PBHT.
Assessment of the Threat From Wildfires on Above Ground Natural Gas Facilities
Authors: Robinson Clive G. , Wattis Zoë E. , Dooley Colin , Popovic Sladjana 
Published: November 2018

In the light of recent experience of wildfires in Alberta and British Columbia, Alliance Pipeline has strengthened their emergency preparedness in dealing with external fire events that have the potential to affect above-ground facilities connected with their high pressure natural gas pipeline system. As part of this initiative a quantitative methodology has been developed that enables the effects of a wildfire on an above-ground pipeline facility to be assessed.
The methodology consists of three linked calculations which assess:
1. the severity of the wildfire, based on information from the Canadian Wildland Fire Information System,
2. the transmission of thermal radiation from the wildfire to the facility, and,
3. the response of equipment, structures and buildings to the incident thermal radiation.
The predictions of the methodology agree well with the actual damage observed at a lateral block valve site following a wildfire in 2016. Application to example facility types (block valve sites, meter stations and compressor stations) has demonstrated that, in general, damage is only predicted for more vulnerable items such as cables.
The sensitivity of the predictions of the methodology to the input parameters and key modelling uncertainties has been examined. This demonstrates that the results are sensitive to the distance of the facility from the tree line and the assumed vegetation type. This shows the importance of verifying the location relative to the vegetation and selecting the appropriate vegetation type from the Canadian Wildland Fire Information System for site specific assessments. The predictions of the methodology are particularly sensitive to the assumed flame temperature. However, a value has been chosen that gives good agreement with measured thermal radiation values from wildfires.
Of the mitigation options considered, the most effective and practical is to increase the distance to the tree line. This measure has the advantage of reducing radiation levels for all items on the site. Even though the work shows that failure of exposed pipework due to wildfires is unlikely, maintaining the flow within pipes is recommended as this increases the radiative flux at which failure is predicted to occur. However, as failure of cables and hence control systems would occur at a lower flux levels the fail-safe actions of such systems needs to be confirmed. Shielding of cables or items of equipment in general is likely to be impractical but could be considered for particularly vulnerable equipment or locations.
Control of %age Shear Area in DWTT at Low Temperature in Niobium Microalloyed Line Pipe Steel
Authors: Subramanian Sundaresa , Ma Xiaoping , Wang Xuelin , Shang Chengjia , Zhang Xiaobing , Miao Chengliang , Collins Laurie 
Published: November 2018

Microstructural engineering to obtain 100% shear area in DWTT at low temperature requires target parameters to suppress brittle fracture. In-depth characterization of benchmarked steels has confirmed that %age shear area is decreased by high number density of ultra-fine precipitates (<10nm) that contribute to precipitation strengthening, high intensity of rotated cube texture and coarse brittle constituents like M/A or carbides. The control of these parameters by nano-scale precipitate engineering of TiN-NbC was covered in a previous presentation in IPC 2016 [1]. The present paper focuses on crystallographic variants selection that controls the density and dispersion of high angle boundaries, which arrest microcracks to suppress brittle fracture, thereby increasing %age shear area in DWTT at low temperature.
Studies on crystallographic variants selection in single undeformed austenite grain have clarified crystallographic variants configuration which gives rise to high angle boundaries is influenced by hardenability parameters, i.e., alloying, cooling rate and austenite grain size. The profound effect of carbon and solute niobium on density and dispersion of high angle boundaries in CGHAZ is demonstrated by analyzing EBSD data to reconstruct the shear transformation of undeformed austenite using K-S relationship. Moreover, pancaking of austenite influences crystallographic variants through Sv factor and dislocation density. Experimental results on nano-scale TiN-NbC composite precipitate engineered steel confirm that adequate solute niobium (>0.03wt%) is retained in the matrix, which is aided by the suppression of delayed strain induced precipitation of ultra-fine precipitates of NbC. The hardenability from solute niobium is found to be adequate to give high density of high angle boundaries to give about 95% shear area in DWTT at −40°C in 32 mm gage K-60 plate and 100% shear area in 16.3 mm X-90 strip. Both steels were processed by nano-scale precipitate engineering of TiN-NbC composite to control size and uniformity of distribution of austenite grains before pancaking.
Case Studies Highlighting Rapid Repair Methods of Pressurised Pipelines Damaged by Anchors
Authors: Millward Dale 
Published: November 2018

Effective pipeline design and regular maintenance can assist in prolonging the lifespan of subsea pipelines, however the presence of marine vessels can significantly increase the risk of pipeline damage from anchor hazards. As noted in the Health and Safety Executive – Guideline for Pipeline Operators on Pipeline Anchor Hazards 2009. “Anchor hazards can pose a significant threat to pipeline integrity. The consequences of damage to a pipeline could include loss of life, injury, fire, explosion, loss of buoyancy around a vessel and major pollution”.
This paper will describe state of the art pipeline isolation tooling that enables safe modification of pressurised subsea pipelines. Double Block and Bleed (DBB) isolation tools have been utilised to greatly reduce downtime, increase safety and maximise unplanned maintenance, providing cost-effective solutions to the end user. High integrity isolation methods, in compliance with international subsea system intervention and isolation guidelines (IMCA D 044 / IMCA D 006), that enable piggable and unpiggable pipeline systems to be isolated before any breaking of containment, will also be explained.
This paper will discuss subsea pipeline damage scenarios and repair options available to ensure a safe isolation of the pipeline and contents in the event of an incident DNV GL type approved isolation technology enables the installation of a fail-safe, DBB isolation in the event of a midline defect.
The paper will conclude with case studies highlighting challenging subsea pipeline repair scenarios successfully executed, without depressurising the entire pipeline system, and in some cases without shutting down or interrupting production.
Optimizing Electrical Protection for Medium Voltage Controller Lineup to Improve Liquids Pipelines Operation Reliability and Safety
Authors: Yu Ting , Chaitanya Tushar 
Published: November 2018

MV (Medium Voltage) controller lineup electrical protection is crucial in protecting the equipment from large scale damage upon the occurrence of an electrical fault, reducing the time to restore power, thereby minimizing the impact to liquids pipelines operation. The paper discusses typical electrical failure modes that may occur in MV controller lineups, and demonstrates practical relaying engineering techniques that enable fast and effective fault clearing. Electrical faults in the MV controller lineup are often arcing type, commonly involve ground. Mitigating arc hazards in MV Class E2 controller lineups has traditionally been challenging without sacrificing the protection selectivity. As the paper demonstrates, a relaying scheme with the combined use of high-speed light-sensing and overcurrent detection will effectively mitigate the incident energy, while maintaining the protection selectivity for non-arcing overcurrent events.
For new MV controller lineups, in addition to the “high-speed light detection and fault interruption”, zone-selective interlocking (ZSI) can also be a practical solution in improving relay protection speed, thus reduce the chance of severe arc flash occurrences. ZSI is particularly effective for fault occurrences on the line side of the phase CTs, busways or main incoming circuits. The ZSI scheme can be implemented on both Class E2 and circuit breaker (VCB) type MV controller lineups, however, with slightly different trip logic due to the limited fault clearing capability of the contactor.
Although there are multiple contributing factors, the direct causes of electrical failures in MV controller lineup are commonly related to improper power cable installation and handling, potentially leading to premature insulation breakdown due mainly to the proximity effect and/or partial discharge. Inadequate cable separation and prolonged fault trip delay can increase the possibility of arcing fault occurrence. This can usually be mitigated through appropriate cable spacing, adequate conductor insulation, and optimized fault detection schemes. The paper provides overviews of the mechanisms of proximity effect and partial discharge propagation, and the modern relaying approaches for accurate fault type discrimination and facilitating fast fault interruption.
Two case studies are provided in the paper as an aid in understanding the electrical fault mechanism originated from cable insulation failure, demonstrating the incident energy reduction before and after the implementation of high-speed light detection and fault interruption solutions on an existing MV controller lineup.