bluuebunny/crossref_metadata_2025_split huggingface dataset:
A novel software‐defined networking approach for vertical handoff in heterogeneous wireless networks
Authors: Qiang Li , Li Jie , Ji Yusheng , Huang Changcheng 
Published: June 2016

AbstractWe propose a novel vertical handoff scheme with the support of the software‐defined networking technique for heterogeneous wireless networks. The proposed scheme solves two important issues in vertical handoff: network selection and handoff timing. In this paper, the network selection is formulated as a 0‐1 integer programming problem, which maximizes the sum of channel capacities that handoff users can obtain from their new access points. After the network selection process is finished, a user will wait for a time period. Only if the new access point is consistently more appropriate than the current access point during this time period, will the user transfer its inter‐network connection to the new access point. Our proposed scheme ensures that a user will transfer to the most appropriate access point at the most appropriate time. Comprehensive simulation has been conducted. It is shown that the proposed scheme reduces the number of vertical handoffs, maximizes the total throughput, and user served ratio significantly. Copyright © 2016 John Wiley & Sons, Ltd.
Experimental detection of laminar‐turbulent transition on a rotating wind turbine blade in the free atmosphere
Authors: Schaffarczyk A. P. , Schwab D. , Breuer M. 
Published: June 2016

AbstractThis paper discusses the findings from a measurement campaign on a rotating wind turbine blade operating in the free atmosphere under realistic conditions. A total of 40 pressure sensors together with an array of 23 usable hot‐film sensors (based on constant temperature anemometry) were used to study the behavior of the boundary layer within a specific zone on the suction side of a 30 m diameter wind turbine at different operational states. A set of several hundreds of data sequences were recorded. Some of them show that under certain circumstances, the flow may be regarded as not fully turbulent. Accompanying Computational Fluid Mechanics (CFD) simulations suggest the view that a classical transition scenario according to the growth of so‐called Tollmien–Schlichting did not apply. Copyright © 2016 John Wiley & Sons, Ltd.
The catalytic subunit of the first mannosyltransferase in the GPI biosynthetic pathway affects growth, cell wall integrity and hyphal morphogenesis in Candida albicans
Authors: Singh Sneh Lata , Rai Ramesh Chandra , Sah Sudisht Kumar , Komath Sneha Sudha 
Published: June 2016

AbstractCaGpi14 is the catalytic subunit of the first mannosyltransferase that is involved in the glycosylphosphatidylinositol (GPI) biosynthetic pathway in Candida albicans. We show that CaGPI14 is able to rescue a conditionally lethal gpi14 mutant of Saccharomyces cerevisiae, unlike its mammalian homologue. The depletion of this enzyme in C. albicans leads to severe growth defects, besides causing deficiencies in GPI anchor levels. In addition, CaGpi14 depletion results in cell wall defects and upregulation of the cell wall integrity response pathway. This in turn appears to trigger the osmotic‐stress dependent activation of the HOG1 pathway and an upregulation of HOG1 as well as its downstream target, SKO1, a known suppressor of expression of hyphae‐specific genes. Consistent with this, mutants of CaGPI14 are unable to undergo hyphal transformations in different hyphae‐inducing media, under conditions that produce abundant hyphae in the wild‐type cells. Hyphal defects in the CaGPI14 mutants could not be attributed either to reduced protein kinase C activation or to defective Ras signalling in these cells but appeared to be driven by perturbations in the HOG1 pathway. Copyright © 2016 John Wiley & Sons, Ltd.
Ammine Complexes of Na‐, Ag‐, Mn‐, and Zn‐Azides
Authors: Müller Thomas G. , Buchner Magnus R. , Scheubeck Thomas J. , Korber Nikolaus , Kraus Florian 
Published: June 2016

AbstractThe synthesis of ammine metal azides is achieved through a simple route in liquid ammonia solution. Azides of silver, sodium, manganese, and zinc were obtained as ammine complexes from liquid ammonia and the solid compounds were characterized. The NH3 solutions were investigated by means of NMR spectroscopy as well. The triamminesilver(I) azide as well as the unusual tetraamminesilver(I) and pentaamminesodium(I) azides are presented. The structures of the hexaamminemanganese(II) and hexaamminezinc(II) azides, which crystallize with four ammonia molecules of solvation, are elucidated. From these compounds the binary azides Mn(N3)2 and Zn(N3)2 were obtained by (careful) heating.
The Effect of Stressful Life Events on Postpartum Depression: Findings from the 2009–2011 Mississippi Pregnancy Risk Assessment Monitoring System
Authors: Qobadi Mina , Collier Charlene , Zhang Lei 
Published: June 2016

Abstract

Objectives To determine the prevalence of postpartum depression (PPD) among new mothers in Mississippi during 2009–2011 and evaluate the effects of different stressful life events in the year before delivery on the likelihood of PPD. Methods We used Mississippi Pregnancy Risk Assessment Monitoring System (PRAMS) 2009–2011 data (n = 3695) to evaluate the effects of different stressful life events on PPD. We categorized 13 stressors into 4 groups: financial, relational, trauma-related, and emotional. A composite score of the mothers’ responses (≥10) to the three items: “I felt down, depressed, or sad”, “I felt hopeless”, and “I felt slowed down” was used to measure PPD. The items were rated on a Likert scale from (1) never to 5 (always). Descriptive statistics, Chi square tests, t tests, and logistic regression analyses were conducted using SAS 9.3 Proc Survey procedure (SAS Institute, Cary, NC, USA). Results The overall prevalence of self-reported PPD was 14.8 %. Mothers who experienced high relational with low financial and high trauma related stresses had the highest likelihood of PPD diagnosis after adjusting for confounders (OR = 8.6; 95 % CI, 3.5–21.3), followed by those who reported high relational stress with low financial and low trauma stresses (OR = 5.9; 95 % CI, 3.5–10.2). Those with high financial, low relational, and low trauma had the least likelihood of PPD (OR = 2.2; 95 % CI, 1.6–3.0) compared to women with low stress in all three categories. Conclusion Our findings showed that the likelihood of PPD was higher among women who had high relational stress, indicating that efforts to effectively prevent PPD need to focus on healthy relationships between partners during pregnancy.
Healthcare Utilization in the Postpartum Period Among Illinois Women with Medicaid Paid Claims for Delivery, 2009–2010
Authors: Rankin Kristin M. , Haider Sadia , Caskey Rachel , Chakraborty Apurba , Roesch Pamela , Handler Arden 
Published: June 2016

Abstract

Purpose Postpartum care can provide the critical link between pregnancy and well-woman healthcare, improving women’s health during the interconception period and beyond. However, little is known about current utilization patterns. This study describes the patterns of postpartum care experienced by Illinois women with Medicaid-paid deliveries. Methods Medicaid claims for women delivering infants in Illinois in 2009–2010 were analyzed for the receipt, timing and patterns of postpartum care, as identified through International Classification of Diseases Revision 9—Clinical Modification and Current Procedural Terminology© codes for routine postpartum care (43.4 % of visits), other postpartum services (e.g., depression screening, family planning), and other office visits for non-acute care. Results Over 90,000 visits to 55,577 women were identified, with 81.1 % of women experiencing any care during the first 90 days postpartum. Approximately 40 % had one visit, while 31 and 29 % had two and three or more visits, respectively. Thirty-four percent had their first visit <21 days postpartum, while 56 % had the first visit between 21 and 56 days postpartum. Compared with non-Hispanic whites, African-Americans had lower rates of receiving any care (73.6 vs. 86.5 %), fewer visits (48.0 vs. 33.5 % with only one visit), and later first visits (13.6 vs. 7.3 %, >56 days). Conclusions for Practice The vast majority of Illinois women with Medicaid-paid deliveries interact with the healthcare system during the first 3 months postpartum, though not always for a routine postpartum visit. Strategies to optimize postpartum health should encourage a higher level of coordination among services and linkage to well-woman care to improve subsequent women and infants’ health outcomes.
Haploidentical transplantation as a promising therapy for relapsed hemophagocytic lymphohistiocytosis in an older adult patient
Authors: Ayala Ernesto , LaFave Denise , Nishihori Taiga , Kharfan-Dabaja Mohamed A. 
Published: June 2016

Hemophagocytic lymphohistiocytosis (HLH) is a rare but severe and often overwhelming systemic hyper-inflammatory syndrome generally presenting with unexplained fevers, hepatosplenomegaly, and progressive multi-organ dysfunction. Treatment of HLH has two major goals: Halting the triggering event and controlling the overactive immune system. However, patients with primary or recurrent secondary HLH should subsequently undergo allogeneic HCT for long lasting disease remission. Hereby we present the case of a 69 years old man with recurrent HLH who underwent a reduced intensity conditioning of fludarabine, cyclophosphamide and low dose total body irradiation followed by a haploidentical marrow graft and post-transplantation cyclophosphamide (PTCy), tacrolimus and mycophenolate mofetil as GVHD prophylaxis. He achieved a durable remission of HLH symptoms despite persistent myeloid mixed chimerism.
The use of haploidentical donors and PTCy as tolerance inducing regimen is feasible in HLH. The achievement of mixed donor chimerism may be enough to control the clinical manifestations and to cure HLH.
Morphing structure for a rudder
Authors: Castillo-Acero M. A. , Cuerno-Rejado C. , Gómez-Tierno M. A. 
Published: June 2016

ABSTRACTThe modification of aerofoils with structural morphing in order to enhance aerodynamic efficiency is an active field of research. The required forced and induced displacements are, usually, out the current developments on shape memory alloys, piezoelectric actuators or multi-stable structures for commercial transport aircraft applications. This work aims to present studies for obtaining an optimum rudder structure which morphs to a pre-defined curvature that can sustain aerodynamic and internal loads in a critical certification load case for a commercial transport aircraft. It also includes the feasibility of a morphing rudder based on a zero Poisson skeleton, or close to a zero Poisson ratio panel geometrical configuration that has no transverse deformation when perpendicularly loaded and which is produced with an additive layer manufacturing process.
Campanian rudists (Hippuritida, Bivalvia) from Costa Rica (Central America)
Authors: Pons Jose Maria , Vicens Enric , Schmidt-Effing Reinhard 
Published: June 2016

AbstractThe Campanian rudist fauna identified from the localities Playa Panamá, Santa Rosa National Park, Colorado de Abangares, and Bolsón in Guanacaste Province, Costa Rica, is composed of the antillocaprinidsAntillocaprinasp. aff.A. suboccidentalisChubb, 1967,Antillocaprinasp. and Antillocaprinidae indet.; the multiple-fold hippuritidsBarrettia moniliferaWoodward, 1862,Parastroma trechmanniChubb, 1967, and cf.Whitfieldiella gigas(Chubb, 1955); the plagioptychidsPlagioptychus trechmanniChubb, 1956,Plagioptychussp. cf.P. zansiChubb, 1956,Mitrocaprina costaricaensisnew species,Mitrocaprina multicanaliculataChubb, 1956, and Plagioptychidae indet.; and the radiolitidsRadiolitessp. aff.R. multicostata(Adkins, 1930),Alencasteritesnew genusmooretownensis(Trechmann, 1924),Bournonia?tetrahedron(Chubb, 1967),Chiapasellasp.,Guanacastea costaricaensisnew genus new species, cf.Potositessp. aff.P. tristantorresiAlencáster and Pons in Pons et al., 2010, and aff.Thyrastylonsp. Although some differences in rudist diversity and sedimentary setting were observed among localities, most species indicate the same age for all occurrences, which correspond to the Campanian, probably mid-Campanian. Radiolitid specimens appear better preserved than those of other taxa and are thus discussed more in detail. Both the number of radiolitid genera exclusively known from the New World, and reasonable doubts about the correct attribution of some New World species to Old World genera, indicate important differences between rudist faunas at both sides of the Atlantic (Mediterranean and American Tethys, respectively) during the Late Cretaceous.
The external kink mode in diverted tokamaks
Authors: Turnbull A. D. , Hanson J. M. , Turco F. , Ferraro N. M. , Lanctot M. J. , Lao L. L. , Strait E. J. , Piovesan P. , Martin P. 
Published: June 2016

An explanation is provided for the disruptive instability in diverted tokamaks when the safety factor$q$at the 95 % poloidal flux surface,$q_{95}$, is driven below 2.0. The instability is a resistive kink counterpart to the current-driven ideal mode that traditionally explained the corresponding disruption in limited cross-sections (Shafranov,Sov. Phys. Tech. Phys., vol. 15, 1970, p. 175) when$q_{edge}$, the safety factor at the outermost closed flux surface, lies just below a rational value$m/n$. Experimentally, external kink modes are observed in limiter configurations as the current in a tokamak is ramped up and$q_{edge}$decreases through successive rational surfaces. For$q_{edge}<2$, the instability is always encountered and is highly disruptive. However, diverted plasmas, in which$q_{edge}$is formally infinite in the magnetohydrodynamic (MHD) model, have presented a longstanding difficulty since the theory would predict stability, yet, the disruptive limit occurs in practice when$q_{95}$, reaches 2. It is shown from numerical calculations that a resistive kink mode is linearly destabilized by the rapidly increasing resistivity at the plasma edge when$q_{95}<2$, but$q_{edge}\gg 2$. The resistive kink behaves much like the ideal kink with predominantly kink or interchange parity and no real sign of a tearing component. However, the growth rates scale with a fractional power of the resistivity near the$q=2$surface. The results have a direct bearing on the conventional edge cutoff procedures used in most ideal MHD codes, as well as implications for ITER and for future reactor options.
Ultrastructure observation on the cells at different life history stages of Cryptocaryon irritans (Ciliophora: Prostomatea), a parasitic ciliate of marine fishes
Authors: MA RUI , NI BING , FAN XINPENG , WARREN ALAN , YIN FEI , GU FUKANG 
Published: June 2016

SUMMARYCells of Cryptocaryon irritans at different life history stages were studied using both light and electron microscopy. The characteristics of several organelles were revealed for the first time at the ultrastructural level. It was confirmed that the cytostome of trophonts, protomonts and theronts was surrounded by cilium–palp triplets rather than ciliary triplets. The nematodesmata underlying the circumoral dikinetids were single bundles, whereas these were always paired in Prorodontids. Toxicysts were present in late-stage tomonts and theronts, but were absent in trophonts and protomonts. We posited that toxicysts might play a role in infection and invasion of host-fish tissue by theronts. The adoral brosse was unlike that of any other family of the class Prostomatea based on its location and morphology. Membranous folds were present in trophonts, protomonts and theronts. These folds were longer and more highly developed in C. irritans than in exclusively free-living prostome ciliates suggesting that they might be linked to parasitism in C. irritans. Trophonts, protomonts and theronts had multiple contractile vacuoles. The basic ultrastructure of the contractile vacuole of C. irritans was similar to that of other kinetofragminophoran ciliates. They might play different roles in different stages of the life cycle since their ultrastructure varied among trophonts, protomonts and theronts.
Loneliness in late-life depression: structural and functional connectivity during affective processing
Authors: Wong N. M. L. , Liu H.-L. , Lin C. , Huang C.-M. , Wai Y.-Y. , Lee S.-H. , Lee T. M. C. 
Published: June 2016

BackgroundLate-life depression (LLD) in the elderly was reported to present with emotion dysregulation accompanied by high perceived loneliness. Previous research has suggested that LLD is a disorder of connectivity and is associated with aberrant network properties. On the other hand, perceived loneliness is found to adversely affect the brain, but little is known about its neurobiological basis in LLD. The current study investigated the relationships between the structural connectivity, functional connectivity during affective processing, and perceived loneliness in LLD.MethodThe current study included 54 participants aged >60 years of whom 31 were diagnosed with LLD. Diffusion tensor imaging (DTI) data and task-based functional magnetic resonance imaging (fMRI) data of an affective processing task were collected. Network-based statistics and graph theory techniques were applied, and the participants’ perceived loneliness and depression level were measured. The affective processing task included viewing affective stimuli.ResultsStructurally, a loneliness-related sub-network was identified across all subjects. Functionally, perceived loneliness was related to connectivity differently in LLD than that in controls when they were processing negative stimuli, with aberrant networking in subcortical area.ConclusionsPerceived loneliness was identified to have a unique role in relation to the negative affective processing in LLD at the functional brain connectional and network levels. The findings increas our understanding of LLD and provide initial evidence of the neurobiological mechanisms of loneliness in LLD. Loneliness might be a potential intervention target in depressive patients.
Influence of the noradrenergic system on the formation of intrusive memories in women: an experimental approach with a trauma film paradigm
Authors: Rombold F. , Wingenfeld K. , Renneberg B. , Hellmann-Regen J. , Otte C. , Roepke S. 
Published: June 2016

BackgroundIntrusive memories of traumatic events are a core feature of post-traumatic stress disorder but little is known about the neurobiological formation of intrusions. The aim of this study was to determine whether the activity of the noradrenergic system during an intrusion-inducing stressor would influence subsequent intrusive memories.MethodWe conducted an experimental, double-blind, placebo-controlled study in 118 healthy women. Participants received a single dose of either 10 mg yohimbine, stimulating noradrenergic activity, or 0.15 mg clonidine, inhibiting noradrenergic activity, or placebo. Subsequently, they watched an established trauma film which induced intrusions. The number of consecutive intrusions resulting from the trauma film, the vividness of the intrusions, and the degree of distress evoked by the intrusions were assessed during the following 4 days. Salivary cortisol and α-amylase were collected before and after the trauma film.ResultsA significant time × treatment interaction for the number of intrusions and the vividness of intrusions indicated a different time course of intrusions depending on treatment. Post-hoc tests revealed a delayed decrease of intrusions and a delayed decrease of intrusion vividness after the trauma film in the yohimbine group compared with the clonidine and placebo groups. Furthermore, after yohimbine administration, a significant increase in salivary cortisol levels was observed during the trauma film.ConclusionsOur findings indicate that pharmacological activation of the noradrenergic system during an emotionally negative event makes an impact on consecutive intrusive memories and their vividness in healthy women. The noradrenergic system seems to be involved in the formation of intrusive memories.
Prevalence and antimicrobial resistance ofSalmonellaserovars isolated from poultry in Ghana
Authors: ANDOH L. A. , DALSGAARD A. , OBIRI-DANSO K. , NEWMAN M. J. , BARCO L. , OLSEN J. E. 
Published: June 2016

SUMMARYPoultry are possible sources of non-typhoidalSalmonellaserovars which may cause foodborne human disease. We conducted a cross-sectional study to determine the prevalence ofSalmonellaserovars in egg-laying hens and broilers at the farm level and their susceptibility to antimicrobials commonly used in the poultry industry in Ghana. Sampling of faeces by a sock method (n= 75), dust (n= 75), feed (n= 10) and drinking water (n= 10) was performed at 75 commercial egg-laying and broiler farms in two regions of Ghana and skin neck (n= 30) at a local slaughterhouse from broilers representing different flocks.Salmonellawas detected in 94/200 (47%) samples with an overall flock prevalence of 44·0%. Sixteen different serovars were identified withS. Kentucky (18·1%),S. Nima (12·8%),S. Muenster (10·6%),S. Enteritidis (10·6%) andS. Virchow (9·6 %) the most prevalent types. The predominant phage type ofS. Enteritidis was PT1. All strains were susceptible to cefotaxime, ceftazidime and cefoxitin. Fifty-seven (60·6%) strains were resistant to one or more of the remaining nine antimicrobials tested by disk diffusion, of which 23 (40·4%) showed multi-resistance (resistance to ⩾3 classes of antimicrobials). Of the resistant strains (n= 57), the most significant were to nalidixic acid (89·5%), tetracycline (80·7%), ciprofloxacin (64·9%), sulfamethazole (42·1%), trimethoprim (29·8%) and ampicillin (26·3%). AllS.Kentucky strains were resistant to more than two antimicrobials and shared common resistance to nalidixic acid or ciprofloxacin and tetracycline, often in combinations with other antimicrobials. PFGE analysis usingXbaI ofS. Kentucky demonstrated one dominant clone in the country. In conclusion, poultry produced in Ghana has a high prevalence of multi-resistantSalmonellaand the common finding of clonalS.Kentucky in the Kumasi area warrants further investigations into the epidemiology of this serovar. There is an urgent need for surveillance and control programmes onSalmonellaand use of antimicrobials in the Ghanaian poultry industry to protect the health of consumers.
How do parents' depression and anxiety, and infants' negative temperament relate to parent–infant face-to-face interactions?
Authors: Aktar Evin , Colonnesi Cristina , de Vente Wieke , Majdandžić Mirjana , Bögels Susan M. 
Published: June 2016

AbstractThe present study investigated the associations of mothers' and fathers' lifetime depression and anxiety symptoms, and of infants' negative temperament with parents' and infants' gaze, facial expressions of emotion, and synchrony. We observed infants' (age between 3.5 and 5.5 months, N = 101) and parents' gaze and facial expressions during 4-min naturalistic face-to-face interactions. Parents' lifetime symptoms of depression and anxiety were assessed with clinical interviews, and infants' negative temperament was measured with standardized observations. Parents with more depressive symptoms and their infants expressed less positive and more neutral affect. Parents' lifetime anxiety symptoms were not significantly related to parents' expressions of affect, while they were linked to longer durations of gaze to parent, and to more positive and negative affect in infants. Parents' lifetime depression or anxiety was not related to synchrony. Infants' temperament did not predict infants' or parents' interactive behavior. The study reveals that more depression symptoms in parents are linked to more neutral affect from parents and from infants during face-to-face interactions, while parents' anxiety symptoms are related to more attention to parent and less neutral affect from infants (but not from parents).