bluuebunny/crossref_metadata_2025_split huggingface dataset:
Neighbor Distinguishing Edge Colorings Via the Combinatorial Nullstellensatz Revisited
Authors: Przybyło Jakub , Wong Tsai‐Lien 
Published: December 2014

AbstractConsider a simple graph and its proper edge coloring c with the elements of the set . We say that c is neighbor set distinguishing (or adjacent strong) if for every edge , the set of colors incident with u is distinct from the set of colors incident with v. Let us then consider a stronger requirement and suppose we wish to distinguishing adjacent vertices by sums of their incident colors. In both problems the challenging conjectures presume that such colorings exist for any graph G containing no isolated edges if only . We prove that in both problems is sufficient. The proof is based on the Combinatorial Nullstellensatz, applied in the “sum environment.” In fact the identical bound also holds if we use any set of k real numbers instead of as edge colors, and the same is true in list versions of the both concepts. In particular, we therefore obtain that lists of length ( in fact) are sufficient for planar graphs.
Evaluation of portal vein invasion of distal cholangiocarcinoma as borderline resectability
Authors: Miura Fumihiko , Sano Keiji , Amano Hodaka , Toyota Naoyuki , Wada Keita , Yoshida Masahiro , Hayano Koichi , Matsubara Hisahiro , Takada Tadahiro 
Published: December 2014

AbstractBackgroundThe concept of borderline resectability has not yet been introduced for extrahepatic cholangiocarcinoma (ECC). In this study, the surgical results of ECC patients were analyzed to clarify the implications of surgery for distal ECC with portal vein (PV) invasion as a preliminary step for the introduction of the concept of borderline resectability.MethodsThe clinicopathological data of 129 patients who had undergone pancreatoduodenectomy of distal ECC were reviewed retrospectively. Combined PV resection was performed in 10 patients. The clinicopathological variables were evaluated using univariate and multivariate analyses.ResultsPathological PV invasion was observed in eight of the 129 patients. The survival rates of patients with PV invasion were significantly poorer than those of patients without PV invasion: 3 and 5 years after surgery, 17% and 0% versus 50% and 39% (P < 0.001), respectively. Presence of pancreatic or PV invasion, tumor progression, nodal status, and residual tumor were significant prognostic factors on univariate analysis. On multivariate analysis, PV invasion was the only significant independent predictive factor of a poor prognosis.ConclusionsPV invasion of distal ECC should be regarded as indicating borderline resectability.
Huanglongbing modifies quality components and flavonoid content of ‘Valencia’ oranges
Authors: Massenti Roberto , Lo Bianco Riccardo , Sandhu Amandeep K , Gu Liwei , Sims Charles 
Published: December 2014

AbstractBACKGROUNDIn order to evaluate the effect of citrus greening disease, or Huanglongbing (HLB), on quality components and flavonoid contents of ‘Valencia’ oranges, fruit from non‐infected trees (control), from infected trees but symptom‐less (asymptomatic) and from infected trees and showing clear HLB symptoms (symptomatic) were harvested in March and in May, 2013. Fruit peel, pulp and juice were separated, the main quality components were determined, and hesperidin, nobiletin, tangeretin, narirutin and didymin were quantified using liquid chromatography.RESULTSPeel colour, total soluble solids and citric acid were similar in control and asymptomatic fruits. Symptomatic fruits were smaller, yielded less juice, had higher acidity and lower sugar and peel colour than control fruits. In the peel, hesperidin, nobiletin, tangeretin, narirutin and didymin were higher in symptomatic than in asymptomatic and control fruits. Peel flavonoids decreased with fruit maturation. Also, in pulp and juice, flavonoid content was higher in symptomatic than in asymptomatic and control fruits.CONCLUSIONSThese results show that asymptomatic fruits are similar to control fruits more than to symptomatic fruits, suggesting that secondary metabolism and physical properties of fruits are only affected at a later and more advanced stage of HLB infection. Despite the significant loss of quality, fruit with clear HLB symptoms accumulate high quantities of flavonoids in peel and pulp. © 2014 Society of Chemical Industry
Effects of preharvest ultraviolet‐C irradiation on fruit phytochemical profiles and antioxidant capacity in three strawberry (Fragaria × ananassa Duch.) cultivars
Authors: Xie Zhichun , Charles Marie Thérèse , Fan Jinshuan , Charlebois Denis , Khanizadeh Shahrokh , Rolland Daniel , Roussel Dominique , Deschênes Martine , Dubé Claudine 
Published: December 2014

AbstractBACKGROUNDUltraviolet‐C (UV‐C) has proven effective in extending shelf‐life, reducing disease incidence and increasing the levels of health‐promoting compounds in several crops. While most studies were conducted at the postharvest stage, our study examined the effect of preharvest UV‐C application in three strawberry cultivars (Fragaria × ananassa Duch. 'Albion', 'Charlotte' and 'Seascape'). UV‐C treatment was applied from the onset of flowering until the fruits reached commercial maturity on plants grown for two consecutive seasons under greenhouse conditions. The phytochemical profiles and antioxidant capacity of the fruits were assessed at harvest.RESULTSThe ellagic acid and kaempferol‐3‐glucuronide contents were significantly increased only in fruits of the cultivar 'Albion' collected from UV‐C‐treated plants in season 1. UV‐C did not consistently affect the other phenolic compounds that were measured. Based on the results of the ferric‐reducing antioxidant power, oxygen radical absorbance capacity and total phenolic content assays, the antioxidant capacity of the three strawberry cultivars was not affected by UV‐C. Season and cultivar had a decisive impact on these parameters.CONCLUSIONThe effect of preharvest UV‐C on the levels of bioactive compounds in strawberry fruits appears to be cultivar‐ dependent, with season or growing conditions having a significant impact. © 2014 Society of Chemical Industry
A prospective study of mastectomy patients with and without delayed breast reconstruction: Long‐term psychosocial functioning in the breast cancer survivorship period
Authors: Metcalfe Kelly A. , Zhong Toni , Narod Steven A. , Quan May‐Lynn , Holloway Claire , Hofer Stefan , Bagher Shaghayegh , Semple John 
Published: December 2014

IntroductionFor women who have mastectomy, breast reconstruction is an option which may improve psychosocial functioning. The purpose of this study was to evaluate changes in psychosocial functioning over a long follow‐up period after mastectomy, specifically examining the differences between those with mastectomy alone and those who underwent postmastectomy delayed breast reconstruction (DBR).MethodsThis was a prospective longitudinal survey study of women with mastectomy in which a repeated measures design was used to compare psychosocial function scores over 3 timepoints: 1) pre‐mastectomy; 2) one year post‐mastectomy; and 3) long‐term post‐mastectomy (mean 6.3 years). In addition, psychosocial functioning was compared between the mastectomy alone group and the group who elected for DBR.Results67 women who completed questionnaires at all three time points were included. The long‐term follow‐up time post‐mastectomy was 75.2 months (6.3 years). Twenty‐eight women (41.8%) underwent DBR in the study period. For the entire cohort, between one‐year and long‐term post‐mastectomy, there were significant improvements in scores for body concerns (P = 0.03), cancer‐related distress (P = 0.01), and total distress (P = 0.04). At long‐term follow‐up, women with DBR had significantly higher levels of total distress (P = 0.01), obsessiveness (P = 0.03), and cancer‐related distress (P = 0.02) compared to those with mastectomy alone. There were no differences in quality of life between the two groups at any time point.ConclusionsPsychosocial functioning improves over time in patients treated with mastectomy in the long‐term breast cancer survivorship period, which may be related to the effect of time post‐treatment, rather than an effect of choice for or against DBR. J. Surg. Oncol. 2015 111:258–264. © 2014 Wiley Periodicals, Inc.
Quantitative muscle ultrasonography in the follow‐up of juvenile dermatomyositis
Authors: Habers G. Esther A. , Van Brussel Marco , Bhansing Kavish J. , Hoppenreijs Esther P. , Janssen Anjo J.W.M. , Van Royen‐Kerkhof Annet , Pillen Sigrid 
Published: December 2014

ABSTRACTIntroduction: We explored the use of quantitative muscle ultrasonography (QMUS) for follow‐up of juvenile dermatomyositis (JDM). Methods: Seven JDM patients were evaluated at diagnosis and 1, 3, 6, 12, and 24 months using the Childhood Myositis Assessment Scale (CMAS) and QMUS. Muscle thickness (MT) and quantitative muscle echo intensity (EI) were assessed with QMUS in 4 muscles. Results: Six patients experienced a monocyclic course. At diagnosis EI was slightly increased, and MT was relatively normal. After start of treatment MT first decreased and EI increased, with normalization of EI within 6–12 months (n = 4). One patient had higher EIs at diagnosis and slower normalization, indicating fibrosis, despite early normalization of CMAS. One patient experienced a chronic course, with high EIs and atrophy during follow‐up. Conclusions: QMUS can provide additional information for follow‐up of JDM regarding disease severity and residual muscle damage, particularly after normalization of CMAS. Muscle Nerve 52: 540–546, 2015
Unstructured, curved elements for the two‐dimensional high order discontinuous control‐volume/finite‐element method
Authors: Stipcich G. , Piller M. 
Published: December 2014

SummaryQuadrilateral and triangular elements with curved edges are developed in the framework of spectral, discontinuous, hybrid control‐volume/finite‐element method for elliptic problems. In order to accommodate hybrid meshes, encompassing both triangular and quadrilateral elements, one single mapping is used. The scheme is applied to two‐dimensional problems with discontinuous, anisotropic diffusion coefficients, and the exponential convergence of the method is verified in the presence of curved geometries. Copyright © 2014 John Wiley & Sons, Ltd.
Efficient photoinduced In situ preparation of clay/poly(glycidyl methacrylate) nanocomposites using hydrogen‐donor silane
Authors: Jlassi Khouloud , Benna‐Zayani Mémia , Chehimi Mohamed M. , Yagci Yusuf 
Published: December 2014

ABSTRACTClay/poly(glycidyl methacrylate) nanocomposites (clay/PGMA) were prepared by in situ radical photopolymerization using N,N‐dimethylaminopropyltrimethoxysilane(DMA)‐modified bentonite clay acting as hydrogen donor for benzophenone in solution. This initiating system permits to photopolymerize glycidyl methacrylate between the lamellae of the DMA‐modified clay. The approach provides exfoliated nanocomposites as judged by the measurements of X‐ray diffraction. However, a low fraction of persistent intercalated clay regions was visible by transmission electron microscopy. X‐ray photoelectron spectra analyses indicate that the nanocomposites have PGMA‐rich surface. The clay/PGMA nanocomposites can be readily dispersed in ethanol. © 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 800–808
Structure of sodium carboxymethyl cellulose aqueous solutions: A SANS and rheology study
Authors: Lopez Carlos G. , Rogers Sarah E. , Colby Ralph H. , Graham Peter , Cabral João T. 
Published: December 2014

ABSTRACTWe report a small angle neutron scattering (SANS) and rheology study of cellulose derivative polyelectrolyte sodium carboxymethyl cellulose with a degree of substitution of 1.2. Using SANS, we establish that this polymer is molecularly dissolved in water with a locally stiff conformation with a stretching parameter
. We determine the cross sectional radius of the chain (
3.4 Å) and the scaling of the correlation length with concentration (ξ = 296 c−1∕2Å for c in g/L) is found to remain unchanged from the semidilute to concentrated crossover as identified by rheology. Viscosity measurements are found to be in qualitative agreement with scaling theory predictions for flexible polyelectrolytes exhibiting semidilute unentangled and entangled regimes, followed by what appears to be a crossover to neutral polymer concentration dependence of viscosity at high concentrations. Yet those higher concentrations, in the concentrated regime defined by rheology, still exhibit a peak in the scattering function that indicates a correlation length that continues to scale as
. © 2014 The Authors. Journal of Polymer Science Part B: Polymer Physics Published by Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2015, 53, 492–501
Experimental and theoretical investigation of the superior contact properties of dielectrophoretically processed graphene and tantalum nitride electrodes
Authors: Pascon A. M. , Souza J. F. , Fonseca L. R. C. , Diniz J. A. 
Published: December 2014

AbstractWe have explored the dielectrophoretic process (DEP) to reach large scale integration of field effect transistors based on multilayer graphene (GraFET) deposited between source and drain metal electrodes. In our devices graphene lays on top of a TaOx gate dielectric deposited on an n+ silicon substrate, which is used as the back gate electrode, while the metal electrodes are made of TaN. These GraFETs reached a maximum transconductance of −19 mS/mm, which is higher than in silicon MOSFETs. To explain the origin of such good performance at the atomic level, ab initio calculations were conducted assuming two different models of the graphene/TaN interface: Ta‐ and N‐terminated δ‐TaN[111] surfaces with one, two, three, and four layers of graphene on top. We have found that all graphene layers are considerably deformed due to strong interaction with both metal surfaces, and remain non‐planar up to the fourth layer. We have also found that, except for the first graphene layer on TaN, all other layers display the Dirac cones in their locally projected density of states (PDOS). The reason for the absence of the Dirac cones in the first layer, an indication of poor conductance for monolayer graphene on TaN, is the metal induced surface states and not graphene deformation. Finally, due to the large work function of N‐terminated TaN, the first few graphene layers closest to the interface are strongly p‐doped, while for the Ta‐terminated TaN which has low work function the first few graphene layers are slightly n‐doped. The better adherence of graphene on N‐terminated TaN and the strong p‐doping of the interfacial graphene layers may explain the measured low contact resistance.
Verantwortlichkeiten bei Stahlbauprojekten
Authors: Kranz Bernd , Wagner Steffen , Keitel Steffen 
Published: December 2014

AbstractDie Handelnden in der Kette beginnend beim Entwurf über die Bemessung, die Konstruktion bis hin zur Fertigung und Montage haben entsprechende Verantwortlichkeiten zu übernehmen. Bereits beim Entwurf einer Konstruktion sind fertigungsrelevante Vorgaben zu beachten. Aber auch in der Fertigung ist auf Erfordernisse einzugehen, die sich aus der Bemessung ergeben. Auf dem Stahlbausektor existiert dafür mit den Normenreihen DIN EN 1990, DIN EN 1991, DIN EN 1993 ff. und DIN EN 1090 ein in sich geschlossenes Regelwerk, wobei die Erstgenannte für den Bereich der Bemessung und der Konstruktion und die zweite für die Fertigung und die Montage steht. Seit Einführung der DIN EN 1090 sind nun auch die Bemessung und die Konstruktion in die Überprüfung hinsichtlich der Konformität zum aktuell geltenden Regelwerk einzubeziehen. Nach zweijähriger Erfahrung in diesem Bereich ist festzustellen, dass die Vorschriften hinsichtlich der Bemessung und Konstruktion weitgehend beherrscht werden. Die fertigungsrelevanten Vorgaben aus der DIN EN 1090 werden hingegen noch häufig nur unzureichend berücksichtigt. Mit diesem Beitrag sollen die sich daraus ergebenden Probleme dargestellt aber auch Lösungsmöglichkeiten für eine entsprechende Aus‐ und Weiterbildung aufgezeigt werden.Responsibility for steel construction projects. The actors in the chain beginning with the design via calculation, construction to manufacturing and assembling have to assume corresponding responsibilities. The fabrication‐relevant design specifications have to be considered already in the design. Responding to requirements that arise from the design is important in the production, too. A self‐contained set of rules exists in the steel construction sector. The standard series DIN EN 1990, DIN EN 1991 and DIN EN 1993 et seqq. are the base for structural designers and constructing engineers, and DIN EN 1090 is the base for the manufacturers and assembly operators. With the introduction of DIN EN 1090 the design and construction are also included in checking for conformity at the currently applicable regulations. After two years of experience in this area it is to be noted that the rules have largely been mastered in terms of design and construction. The fabrication‐related requirements of DIN EN 1090 are, however, often still insufficiently taken into account. The resulting problems are presented as well as solutions. A contribution of an appropriate education and training will be presented.
Feuerverzinken im Brückenbau
Authors: Ungermann Dieter , Rademacher Dennis , Oechsner Matthias , Simonsen Fabian , Friedrich Susanne , Lebelt Peter 
Published: December 2014

AbstractIn dem hier vorgestellten Forschungsprojekt wurden durch die TU Dortmund, die MPA Darmstadt und das Institut für Korrosionsschutz Dresden GmbH der wissenschaftliche und technische Nachweis eines sicheren Einsatzes der Feuerverzinkung im Stahl‐ und Verbundbrückenbau erbracht. Die Verwendung der Feuerverzinkung ermöglicht einen langlebigen, wartungsfreien und robusten Korrosionsschutz und bietet ökologische und ökonomische Vorteile gegenüber den aktuell eingesetzten Korrosionsschutzsystemen. Der Einsatz im Brückenbau mit zyklischen Belastungen war bislang – aufgrund fehlender wissenschaftlicher Untersuchungen zum Ermüdungsverhalten feuerverzinkten Stahls – nicht möglich. Die Ergebnisse dieses Forschungsprojekts ermöglichen den Nachweis des feuerverzinkten Stahls gegen Werkstoffermüdung nach EC 3‐1‐9 und weisen den sicheren Einsatz der Feuerverzinkung als Korrosionsschutzsystem nach.Hot‐dip galvanizing in bridge construction – Part 1: Using hot‐dip galvanized mild steel for cyclic loaded structures. In the here presented research project the scientific and technical evidence for the safe use of hot‐dip galvanizing for steel and composite bridges were provided by TU Dortmund, MPA Darmstadt and Institut für Korrosionsschutz Dresden GmbH. The use of hot dip galvanizing offers a durable, maintenance‐free and robust corrosion protection and provides environmental and economic advantages over the corrosion protection systems currently in use. The use in bridge construction with cyclic loading was previously not possible – due to a lack of scientific studies on the fatigue behavior of hot‐dip galvanized steel. The results of this research allow the proof of hot‐dip galvanized steel against fatigue according to EC 3‐1‐9 and demonstrate the safe use of hot dip galvanizing as corrosion protection system.
Das Minarett der Großen Moschee von Algerien – Ein Tragwerk der besonderen Art
Authors: Constantinescu Dan , Köber Dietlinde , Akkermann Jan 
Published: December 2014

AbstractDas Minarett der Großen Moschee von Algerien wird das höchste Minarett weltweit und das höchste Bauwerk Afrikas sein. Das Projekt wurde von deutschen Architekten und Ingenieuren geplant und befindet sich zurzeit im Bau. Das Bauwerk unterliegt einem extrem hohen Erdbebenrisiko. In Verbindung mit der extremen Schlankheit des Gebäudes und seinem außergewöhnlichen Aussteifungssystem hat dies zu einem Tragwerk im Verbundbau geführt, das einmalig ist. Zur Absicherung der notwendigen seismischen Sicherheit dieses Millennium‐Monuments mussten die aufwendigsten Verfahren der Planung in Erdbebengebieten angewandt werden. Der Aufsatz beschreibt das Bemessungskonzept der Aussteifung, die angewandten Bemessungsverfahren und einige relevante Tragwerkseigenschaften.The Minaret of the Great Mosque of Algeria – A very special structure. The minaret of the Great Mosque of Algeria will be the highest minaret in the world and Africa’s highest skyscraper. The project designed by a German team of architects and engineers is under construction. The site is exposed to an extremely high seismic risk. This in conjunction with the buildings slenderness and its particular architectonical demands, have led to a composite structure with an unusual concept to withstand lateral loading. In order to ensure the necessary seismic safety of this millennium’s monument the most sophisticated seismic design procedures had to be used. The paper presents the design philosophy and analyses as well as some significant structural features and details of the minaret structure – see also [1].
Himmelstürmend – Bauten und Visionen der Hochhausstadt Frankfurt seit 1945
Authors: Möller Eberhard 
Published: December 2014

AbstractKeine andere Stadt in Deutschland bietet eine solch spannende Hochhauskulisse wie die Bankenmetropole Frankfurt am Main, “analog zu Frankfurts Mainhattan Skyline wird Downtown New York oft als Manhattan bezeichnet“. Dieses treffende Bonmot des Schriftstellers Andreas Neumeister illustriert die städtebauliche, architektonische und baukonstruktive Bedeutung des hessischen Wolkenkratzer‐Ensembles. In Ergänzung zu den beinahe ausschließlich von außen erlebbaren etwa 530 Hochhäusern der Stadt, erläutert das Deutsche Architekturmuseum in Frankfurt am Main politische, gesellschaftliche aber auch bauliche Hintergründe und Entwicklungen. Die Ausstellung “Himmelstürmend – Hochhausstadt Frankfurt“ wird dort bis zum 19. April 2015 gezeigt.Skyward ‐ Buildings and Visions of the Highrise City Frankfurt since 1945. No other city in Germany offers such an exciting skyscraper backdrop like the banking metropolis of Frankfurt am Main, “analogous to the Frankfurt Mainhattan skyline downtown New York often is referred as Manhattan”. This apt quip of the writer Andreas Neumeister illustrates the urban, the architectural but also the constructional importance of the Hessian skyscraper ensemble. In addition to the view from outside to the about 530 high‐rise buildings of the city, the exhibition of the Deutsches Architekturmuseum in Frankfurt am Main explores political and social as well as architectural backgrounds and developments. The exhibition “Skyward – Highrise City Frankfurt” is open till April 19, 2015.
Ermüdungsgerechte Fachwerke aus Rundhohlprofilen mit dickwandigen Gurten
Authors: Kuhlmann Ulrike , Euler Mathias , Hubmann Michael , Bucak Ömer , Fischl Andreas , Mangerig Ingbert , Hess Andreas , Kranz Bernd , Herrmann Jörg , Zschech Roland 
Published: December 2014

AbstractDer Beitrag gibt einen Überblick über die Ergebnisse des ZUTECH‐Forschungsvorhabens FOSTA P815, das sich mit dem Ermüdungsverhalten von geschweißten K‐ und KK‐Knoten in Fachwerken aus Rundhohlprofilen mit dickwandigen Gurten beschäftigt hat. Im Mittelpunkt des Beitrags stehen die experimentellen und numerischen Untersuchungen, die zu Planungs‐, Fertigungs‐ und Bemessungsempfehlungen für die Praxis zusammengefasst wurden.Fatigue‐resistant trusses of circular hollow sections with thick‐walled chords. This paper gives an overview about the results of the ZUTECH‐Research Project FOSTA P815 dealing with the fatigue behaviour of welded K‐ and KK‐joints in trusses made of circular hollow sections with thickwalled chords. The focus is laid on the experimental and numerical investigations that had been summarized to recommendations on planning, fabrication and design for practitioners.