bluuebunny/crossref_metadata_2025_split huggingface dataset:
Virtual and Real Topography for Flows across Mountain Ranges
Authors: Armi Laurence , Mayr Georg J. 
Published: February 2015

AbstractA combination of real and virtual topography is shown to be crucial to describe the essentials of stratified flow over mountain ranges and leeside valleys. On 14 March 2006 [Intensive Observation Period 4 of the Terrain-Induced Rotor Experiment (T-REX)], a nearly neutral cloud-filled layer, capped by a strong density step, overflowed the Sierra Nevada and separated from the lee slope upon encountering a cooler valley air mass. The flow in this lowest layer was asymmetric across and hydraulically controlled at the crest with subcritical flow upstream and supercritical flow downstream. The density step at the top of this flowing layer formed a virtual topography, which descended 1.9 km and determined the horizontal scale and shape of the flow response aloft reaching into the stratosphere. A comparison shows that the 11 January 1972 Boulder, Colorado, windstorm case was similar: hydraulically controlled at the crest with the same strength and descent of the virtual topography. In the 18 February 1970 Boulder case, however, the layer beneath the stronger virtual topography was subcritical everywhere with a symmetric dip across the Continental Divide of only 0.5 km. In all three cases, the response and strength of the flow aloft depend on the virtual topography. The layer up to the next strong density step at or near the tropopause was hydraulically supercritical for the 18 February case, subcritical for the T-REX case, and critically controlled for the 11 January case, for which a weak density step and isolating layer aloft made possible the strong response aloft for which it is famous.
Centrifugal Instability and Mixing in the California Undercurrent
Authors: Dewar W. K. , McWilliams J. C. , Molemaker M. J. 
Published: February 2015

AbstractA regional numerical study of the California Current System near Monterey Bay, California, is conducted using both hydrostatic and nonhydrostatic models. Frequent sighting of strong anticyclones (Cuddies) have occurred in the area, and previous studies have identified Monterey Bay as an apparent region of strong unbalanced flow generation. Here, by means of a downscaling exercise, a domain just downstream of Point Sur is analyzed and argued to be a preferred site of diapycnal mixing. The scenario suggested by the simulations involves the generation of negative relative vorticity in a bottom boundary layer of the California Undercurrent on the continental shelf break. At Point Sur, the current separates from the coast and moves into deep waters where it rapidly develops finite-amplitude instabilities. These manifest as isopycnal overturnings, but in contrast to the normal Kelvin–Helmholtz paradigm for mixing, this study argues that the instability is primarily centrifugal. The evidence for this comes from comparisons of the model with linear results for ageostrophic instabilities. Mixing increases background potential energy. The authors argue the regional potential energy generation near Point Sur in the upper few hundred meters is comparable to that found in open-ocean regions of strong diapycnal mixing, either by abyssal tides and lee waves near topography. This study computes diapycnal fluxes and estimates turbulent diffusivities to argue mixing by centrifugal instability is characterized by diffusivities O(10−4) m2 s−1, although the potential for contamination by explicit diffusivities exists.
ASAR and ASCAT in Polar Low Situations
Authors: Furevik Birgitte Rugaard , Schyberg Harald , Noer Gunnar , Tveter Frank , Röhrs Johannes 
Published: February 2015

AbstractForecasting and monitoring polar lows are, to a large degree, based on satellite observations from passive radiometers and from scatterometer winds in addition to synoptic observations and numerical models. Synthetic aperture radar (SAR) brings higher resolution compared to other remotely sensed sources of ocean wind, such as scatterometer data and passive microwave wind products. The added information in polar low situations from SAR and the increased-resolution scatterometer wind fields are investigated. Statistically, higher variability in the MetOp Advanced Scatterometer (ASCAT) wind is clearly found during polar low situations compared to all situations. Slightly more variability is also seen in the ASCAT 12.5-km wind product compared to the operational European Centre for Medium-Range Weather Forecasts (ECMWF) model surface winds. In two analyzed polar low cases, Environmental Satellite (Envisat) Advanced SAR (ASAR) images reveal numerous interesting features, such as the sharp fronts and the location and strength of the strongest wind field in the polar low. It is likely that if SAR images are available to operational weather forecasting, that it can in some cases lead to earlier detection of polar lows. However, a reliable wind field from SAR is still needed.
Toward Improved Forecasts of Sea-Breeze Horizontal Convective Rolls at Super High Resolutions. Part I: Configuration and Verification of a Down-Scaling Simulation System (DS3)
Authors: Chen Guixing , Zhu Xinyue , Sha Weiming , Iwasaki Toshiki , Seko Hiromu , Saito Kazuo , Iwai Hironori , Ishii Shoken 
Published: February 2015

Abstract
Horizontal convective rolls (HCRs) that develop in sea breezes greatly influence local weather in coastal areas. In this study, the authors present a realistic simulation of sea-breeze HCRs over an urban-scale area at a resolution of a few meters. An advanced Down-Scaling Simulation System (DS3) is built to derive the analyzed data using a nonhydrostatic model and data assimilation scheme that drive a building-resolving computational fluid dynamics (CFD) model. The mesoscale-analyzed data well capture the inland penetration of the sea breeze in northeastern Japan. The CFD model reproduces the HCRs over Sendai Airport in terms of their coastal initiation, inland growth, streamwise orientation, specific locations, roll wavelength, secondary flows, and regional differences due to complex surfaces. The simulated HCRs agree fairly well with those observed by dual-Doppler lidar and heliborne sensors. Both the simulation and observation analyses suggest that roll updrafts typically originate in the narrow bands of low-speed streaks and warm air near the ground. The HCRs are primarily driven and sustained by a combination of wind shear and buoyancy forces within the slightly unstable sea-breeze layer. In contrast, the experiment without data assimilation exhibits a higher deficiency in the reproduction of roll characteristics. The findings highlight that CFD modeling, given reliable mesoscale weather and surface conditions, aids in high-precision forecasting of HCRs at unprecedented high resolutions, which may help determine the roll structure, dynamics, and impacts on local weather.
A Melanocytic Lesion Extending From the Right Ear to the Nasopharynx in a Pediatric Patient
Authors: Saito Chizu , Ishikawa Kotaro , Nakamura Ken-ichi , Fujita Akifumi , Shimizu Michio , Fukushima Noriyoshi , Nishino Hiroshi , Ichimura Keiichi 
Published: February 2015

Background: Blue nevus is a benign dermal melanocyte tumor that mainly arises from the skin. We report an extremely rare case of blue nevus in a pediatric patient with extensive progression from the middle ear and inner ear to the nasopharynx through the Eustachian tube. Case Report: A 2-year-old girl with blue tympanum was referred to our department. Computed tomography scans and magnetic resonance imaging were performed, followed by a tissue biopsy and histopathologic evaluations. Radiologic examinations revealed that the lesion had progressed beyond the middle ear into the inner ear and the nasopharynx through the Eustachian tube. Subsequent histopathologic examinations indicated dermal dendritic melanocytic proliferations, but no evidence of malignancy. Based on the clinical and histopathologic findings, we concluded that the lesion was consistent with blue nevus. Discussion: Blue nevus is a relatively common skin lesion. However, no prior reports have described the extension of blue nevus from the auditory organ to the nasopharynx in a pediatric patient. Despite the benign nature of the lesion, the patient experienced profound hearing loss in the affected ear, which necessitates continued monitoring as the lesion may expand with patient growth.
Healthy school communities in Canada
Authors: Bassett-Gunter Rebecca , Yessis Jennifer , Manske Steve , Gleddie Doug 
Published: February 2015

Background and context: Healthy school communities aim to optimise student health and educational achievement. Various models, terms and resources have been used to describe healthy school communities. Policy makers and practitioners have reported confusion around many of the key concepts involved because of the varying models and terms. Importantly, practitioners have reported that the lack of clarity impedes progress related to advancing healthy school work. To address these issues and work towards a common understanding of healthy school communities within the Canadian context, a collaborative process involving practitioners, policy makers and researchers culminated in the production of a concept paper. Objective: Here, we describe the process used to develop the concept paper and summarise what is known about healthy school communities and the effectiveness of the approach. Method: Guided by a steering committee and expert panel, we identified, reviewed and summarised key resources to identify common components and principles necessary for a healthy school communities approach. Results: Core components of healthy school communities that emerged include the presence of education, social and physical environments, policy, community partnerships and the use of evidence. Fundamental principles for creating healthy school communities include the adoption of a whole school approach, education and health service synergy, planning and assessment, leadership and sustainability. Here, we describe the iterative and collaborative process to identify these key components and principles. Conclusion: Beyond the Canadian context, this discussion paper describes a process for enhancing communication among organisations and stakeholders invested in healthy school communities internationally.
Quality‐of‐Life Differences among Diagnostic Subgroups of Children Receiving Ventilating Tubes for Otitis Media
Authors: Heidemann Christian Hamilton , Lauridsen Henrik Hein , Kjeldsen Anette Drøhse , Faber Christian Emil , Johansen Eva Charlotte Jung , Godballe Christian 
Published: February 2015

ObjectiveThe pathological picture may differ considerably between diagnostic subgroups of children with otitis media receiving ventilating tubes. The aims of this study are to investigate differences in quality of life among diagnostic subgroups of children treated with ventilating tubes and to investigate possible predictors for clinical success.Study DesignLongitudinal observational study.SettingSecondary care units.MethodsFour hundred ninety‐one families were enrolled in the study. The Otitis Media–6 questionnaire was applied in the assessment of child quality of life. Caregivers completed questionnaires at 7 time points from before treatment to 18‐month follow‐up. Logistic regression analysis was used to investigate possible predictors for clinical success.ResultsResponse rates ranged from 96% to 81%; diagnostic distribution: 15% recurrent acute otitis media (rAOM), 47% otitis media with effusion (OME), and 38% mixed diagnosis of rAOM and OME (rAOM/OME). There were no significant differences between children diagnosed with rAOM and children diagnosed with rAOM/OME. However, these children had a significantly poorer quality of life at baseline compared with children diagnosed with only OME. Factors associated with clinical success included a diagnosis of rAOM, number of interrupted nights, physician visits, and canceled social activities due to OM.ConclusionsResults highlight the importance of distinguishing between diagnostic subgroups of children having ventilating tube treatment. A diagnosis of rAOM was found to predict baseline quality of life. Children with rAOM with or without OME were found to suffer significantly more than children with only OME before treatment. Factors associated with disease severity were found to predict clinical success.
Development of a Quality Care Plan to Reduce Otolaryngologic Readmissions
Authors: Rajasekaran Karthik , Revenaugh Peter , Benninger Michael , Burkey Brian , Sindwani Raj 
Published: February 2015

ObjectivesHospital readmissions are an important focus of national quality and cost containment efforts. With increased emphasis on the impact of unplanned readmissions, it is critical to evaluate factors contributing to readmission rates and optimize strategies aimed at reducing these rates. The objectives of this study were to discuss quality interventions implemented at our institution and to evaluate their impact on reducing readmissions.Study DesignCase series with chart review.SettingAcademic tertiary care medical center.MethodsMedical records of patients who were admitted to an otolaryngology inpatient service and readmitted within 30 days of discharge between January 2010 and December 2012 were reviewed. A quality care plan (QCP) was developed, and various interventions were implemented during this time to affect these rates.ResultsThere were 769, 816, and 798 admissions during the years 2010, 2011, and 2012, respectively. The number of readmissions during this time were 50 (6.5%), 51 (6.3%), and 28 (3.5%), respectively. There were no statistically significant differences in case mix index, demographics, and subsequent length of stay for those patients requiring readmission. The reduction in number of readmissions in 2012, after the institution of our QCP, was statistically significant (P <. 05).ConclusionReadmission within 30 days in a large otolaryngology practice can be multifactorial. To reduce rates of readmission, it is essential to understand the diagnoses, postoperative complications, and comorbidities contributing to readmission. Implementation of a QCP composed of comprehensive discharge planning and close postdischarge follow‐up can lead to a reduction in readmissions.
Breastfeeding and Coffee Consumption in Children Younger than 2 Years in Boston, Massachusetts, USA
Authors: Burnham Laura , Matlak Stephanie , Makrigiorgos Gregory , Braun Natalie , Knapp Becky Perreault , Merewood Anne 
Published: February 2015

Background: Although introduction of inappropriate foods and liquids in early childhood and their association with breastfeeding is commonly reported in US children, coffee use in very young US children and its association with breastfeeding is not. Objectives: This study aimed to determine the proportion of 1- and 2-year-olds in an urban population consuming coffee, their rate of consumption, and predictors of consumption, including breastfeeding status. Methods: We used data from a prospective cohort study on infant weight gain and diet, and body mass index at age 2. We used bivariate analyses to examine variables associated with coffee consumption at 1 and 2 years and multivariate logistic regression to control for variables of interest. Results: This study included 315 mother-infant dyads. At 1 year, the rate of coffee consumption reported was 2.5%; at 2 years, it was 15.2% and average daily consumption was 1.09 oz (range, 0.01- 4.00 oz). The only characteristic associated with coffee consumption at 1 year was breastfeeding at 1 year ( P = .0275), which did not remain significant after controlling for confounding variables. Variables significantly associated with coffee consumption at year 2 were lower maternal education ( P = .0016), non-US maternal place of birth ( P = .0015), maternal Hispanic ethnicity ( P < .0001), infant female sex ( P = .0495), and receiving any breast milk at 1 year of age ( P = .0189). After multivariate logistic regression, maternal Hispanic ethnicity ( P = .0139) and infant female sex ( P = .0371) remained significant. Conclusion: Coffee consumption is not uncommon among toddlers in Boston, Massachusetts, USA. After controlling for possible confounding factors, maternal ethnicity and infant sex were significantly associated with this practice.
Use of the urine drug screen in psychiatry emergency service
Authors: Akosile Wole , McDermott Brett M 
Published: February 2015

Objective: This study investigates if the routine use of the urine drug screen offers any diagnostic or management benefit in the assessment and treatment of psychiatry patients in a suburban psychiatry emergency service. Methods: Data was collected retrospectively from consecutive patients 18 years and above, who presented to a large suburban hospital emergency department and had a urine drug screen ordered in the emergency department. A total of 111 patients, (with mean age of participants being 34.9 years, SD 10.2 years, minimum 18 – maximum 62 years, 62.2% (69/111) were male) met the inclusion criteria. Results: The most common drug group identified was benzodiazepines (59.5%; 66/111), followed by cannabis (40.5%; 45/111). Other drugs were identified at much lower levels, including amphetamines (9.0%; 10/111), opiates (4.5%; 5/111) and methadone (0%; 0/111). For most individuals only one drug was detected (55.9%; 62/111), with equal numbers (18.9%) with either zero or two drugs identified by a urine drug screen. Fewer patients had three drugs on a urine drug screen (5.4%; 6/111) or four (0.9%; 1/111). Conclusions: Qualitative urine drug screens provide limited additional information compared to history taking and has minimal impact on clinical management decisions in a psychiatry emergency service.
Documentation of medication changes in inpatient clinical notes: an audit to support quality improvement
Authors: Peusschers Elsie , Twine Jaryth , Wheeler Amanda , Moudgil Vikas , Patterson Sue 
Published: February 2015

Objective: To describe completeness and accuracy of recording medication changes in progress notes during psychiatric inpatient admissions. Method: A retrospective audit of records of 54 randomly selected psychiatric admissions at a metropolitan tertiary hospital. Medication changes recorded on National Inpatient Medication Chart (NIMC) were compared to documentation in the clinical progress records and assessed for completeness against seven quality criteria. Results: With between one and 32 medication changes per admission, a total of 519 changes were recorded in NIMCs. Just over half were documented in progress notes. Psychotropic and regular medications were more frequently charted than ‘other’ and ‘if required’ medications. Documentation was seldom comprehensive. Medication name was most frequently documented; desired therapeutic effect or potential adverse effects were rarely documented. Evidence of patient involvement in, and an explicit rationale for, a change were infrequently recorded. Conclusions: Revealing substantial gaps in communication about medication changes during psychiatric admission, this audit sheds light on a previously undescribed source of medication error, warranting attention. Further research is needed to examine barriers to best practice, to support design and implementation of quality improvement activities but in the interim, attention should be addressed to development and articulation of content and procedures for documentation.
Hammertoe Correction With K-Wire Fixation
Authors: Kramer William C. , Parman Michael , Marks Richard M 
Published: February 2015

Background: Kirschner wire (K-wire) fixation for correction of hammertoe deformity is a common, low-cost method for fixation of hammertoes after proximal interphalangeal (PIP) arthroplasty or fusion. Complications of this procedure include pin-tract infection, pin migration, pin bending or breakage, and recurrence of deformity. The investigators reviewed a large experience using K-wire stabilization for hammertoe correction. Methods: All hammertoe corrections performed by a single surgeon from 1999 to 2013 were retrospectively reviewed. A resection arthroplasty of the PIP joint or PIP fusion was performed and fixed with a K-wire. Follow-up duration, preoperative diagnosis, pin duration, concomitant procedures, recurrence rates, and complications were reviewed and analyzed. A total of 1,115 operations were performed on 876 patients, with correction of 2,698 hammertoes. There were 709 female and 167 male patients, with an average age of 57.5 years (range, 14-88 years), followed for an average of 20.8 months (range, 27 days to 12.7 years). Results: Complications included 94 pin migrations (3.5%), 9 pin-tract infections (0.3%), and 2 pin breakages (0.1%). There were 150 recurrent deformities (5.6%) and 94 toes (3.5%) required revision hammertoe surgery. Malalignment was noted in 55 toes (2.1%). Vascular compromise occurred in 16 toes (0.6%), with 10 (0.4%) requiring amputation. Ninety-four toes (3.5%) required revision surgery because of symptomatic recurrence of deformity. The expected rates and rate ratios (RRs) of patients requiring revision hammertoe correction, compared with the study population as a whole, were statistically significantly higher in patients who underwent an metatarsophalangeal joint capsulotomy (3.10 vs 0.97; RR, 3.20) and those who experienced K-wire-related complications (5.10 vs 1.80, RR, 2.84). Conclusions: K-wire fixation for the treatment of hammertoe deformities led to good maintenance of correction with a relatively low complication rate, and we believe that it remains an effective, low-cost method of fixation for hammertoe correction. Level of Evidence: Level IV, retrospective case series.
Multiple tissue-specific expression of rice seed-shattering gene SH4 regulated by its promoter pSH4
Authors: Yan Huanxin , Ma Li , Wang Zhe , Lin Zhimin , Su Jun , Lu Bao-Rong 
Published: February 2015

Abstract

Background
Rice seed shattering is an important domestication syndrome encoded by a gene named as SH4. The coding region of SH4 has been well studied regarding its function and roles in evolution. However, its promoter has not been identified, which limited our understanding of the detailed regulatory mechanisms of this gene. It is therefore critical to characterize the promoter and study its expression pattern.

Results
We analyzed the 5′ upstream sequences of this gene and identified a ~2.6 kb fragment with typical promoter features, which was designated as pSH4. The promoter contained a number of cis-acting elements related to abscisic acid (ABA) and a CpG island that were characteristics of multiple tissue-specific expression. We isolated and ligated pSH4 to the β-glucuronidase (GUS) reporter gene, and transformed it into a japonica rice cultivar to determine the multiple expression pattern of SH4. Histochemical location and fluorescence analyses of GUS activity of transgenic plants indicated multiple tissue-specific expression of pSH4 in the seed-pedicel junction region of mature panicles (with highest level), stems, coleoptiles of germinated seeds, and scutella of mature seeds.

Conclusions
The multiple tissue-specific expression pSH4 is categorized as a spatiotemporal promoter that drives the expression of the SH4 gene in different rice tissues, in addition to the seed-pedicel junction region. Our findings suggest that SH4 may have additional functions in the growth and development of rice, apart from its major role in seed shattering.