bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structural Diversity and Selective CO2 Adsorption of Metal– Organic Frameworks Built with a Flexible Dipyridyl Ligand and Different Carboxylates
Authors: Khatua Sajal , Santra Atanu , Padmakumar Silpa , Tomar Kapil , Konar Sanjit 
Published: January 2018

AbstractA flexible dipyridyl ligand 1,2‐bis(4‐pyridylmethylamino)ethane (L) was synthesized and its diverse coordination mode with Zn(II) and Cd(II) in presence of different dicarboxylate renders five novel Metal–Organic Frameworks, namely, {[Zn(L)(BDC)]⋅6.5H2O}n (1), {[Zn(L)(NH2‐BDC)]⋅6.5H2O}n (2), {[Cd(L)(NH2‐BDC)]⋅7H2O}n (3), {[Cd(L)(OH‐BDC)]⋅H2O}n (4), and {[Cd(L)(diOH‐BDC)]⋅2H2O}n (5) (where, L= 1,2‐bis(4‐pyridylmethylamino)ethane and BDC=benzene‐1,4‐dicatboxylic acid). Crystal structural analysis reveals that compound 1 and 2 are 3D porous networks with open channels while compounds 3–5 are 2D MOFs. Complex 3 contains hydrogen bonded water molecules in between the 2D layers while 4 and 5 are highly dense compounds. The ligand L adopts different conformations which directed the final topology in these complexes. Complex 1–2 have a rare topology, gra, while 3–5 have four connected uninodal net with sql topology. The solvent accessible void volume for 1–3 comes out to be 51.2%, 52.3%, and 27% respectively. The gas adsorption studies reveal that 1–3 exhibit permanent porosity having type I isotherm and selectively adsorb CO2 gas over nitrogen and methane at low temperature with final uptake of 24.18 cc, 22.35 cc and 14.64 cc g−1 at STP, respectively. Vapour sorption study reveals that all the complexes selectively adsorb water vapour than methanol or ethanol vapours with final amount reached to 182.44 cc, 219.29 cc, 189.21 cc, 81.79 cc and 66.48 cc g−1 at room temperature. Solid‐state photoluminescence studies have been performed for all the complexes at room temperature (RT) and emission maximum for each complex are red shifted.
Efficient Synthesis of Succinimide from Succinic Anhydride in Water over Unsupported Nanoporous Nickel Material
Authors: Liu Yunjie , Fu Jun , Ren Dezhang , Song Zhiyuan , Jin Fangming , Huo Zhibao 
Published: January 2018

AbstractThe synthesis of succinimide from succinic anhydride (SA) in water over unsupported nanoporous nickel material (NiNPore) is investigated for the first time. As a result, NiNPore exhibited efficient catalytic performance for the conversion of SA into succinimide and gave 93% isolated yield. Recycling study indicated that NiNPore could be reused at least three times and still kept good catalytic activity for the transformation. Moreover, the conversion of glutaric anhydride (GA) could also proceed well into glutarimide at optimal conditions, and provided 71% isolated yield. The result indicated that SA was the main reactant rather than succinic acid in water. This work provides a promising strategy for the conversion of SA into succinimide in water.
Carbon Dioxide Promotes Dehydrogenation in the Equimolar C2H2‐CO2 Reaction to Synthesize Carbon Nanotubes
Authors: Shi Wenbo , Peng Yue , Steiner Stephen A. , Li Junhua , Plata Desiree L. 
Published: January 2018

AbstractThe equimolar C2H2‐CO2 reaction has shown promise for carbon nanotube (CNT) production at low temperatures and on diverse functional substrate materials; however, the electron‐pushing mechanism of this reaction is not well demonstrated. Here, the role of CO2 is explored experimentally and theoretically. In particular, 13C labeling of CO2 demonstrates that CO2 is not an important C source in CNT growth by thermal catalytic chemical vapor deposition. Consistent with this experimental finding, the adsorption behaviors of C2H2 and CO2 on a graphene‐like lattice via density functional theory calculations reveal that the binding energies of C2H2 are markedly higher than that of CO2, suggesting the former is more likely to incorporate into CNT structure. Further, H‐abstraction by CO2 from the active CNT growth edge would be favored, ultimately forming CO and H2O. These results support that the commonly observed, promoting role of CO2 in CNT growth is due to a CO2‐assisted dehydrogenation mechanism.
Assessment of repeat‐visit surveys as a viable method for estimating brood abundance at the 10.4‐km2 scale
Authors: Carrlson Kaylan M. , Gue Charles Tanner , Loesch Charles R. , Walker Johann A. 
Published: January 2018

ABSTRACTRegional estimates of duck brood abundance could help conservation managers assess landscape productivity and thereby improve spatially explicit allocation of limited conservation funds in the Prairie Pothole Region. We assessed the utility of repeat‐visit brood counts from 2012 to 2013 surveys in the Prairie Pothole Region (ND, SD, and MT, USA) and hierarchical N‐mixture models for providing estimates of abundance at a 10.4‐km2 scale. Models provided reliable estimates of brood abundance and underscored the importance of small wetlands and landscape characteristics to some dabbling duck broods in the Prairie Pothole Region. © 2018 The Wildlife Society.
Indocyanine Green Retention Rates at 15 min Predicted Hepatic Decompensation in a Western Population
Authors: Le Roy Bertrand , Grégoire Emilie , Cossé Cyril , Serji Badr , Golse Nicolas , Adam René , Cherqui Daniel , Mabrut Jean‐Yves , Le Treut Yves‐Patrice , Vibert Eric 
Published: January 2018

AbstractBackgroundICGR15 is widely used in Asia to evaluate the liver reserve before hepatectomy, but not in Western countries where patients are selected using the MELD score and/or platelet count. Postoperative liver failure is rare nowadays, but hepatic decompensation (HD), defined by 3‐month postoperative ascites, impairs quality of life and survival. The aim of this study was to evaluate the relevance of indocyanine green retention rate at 15 min (ICGR15) before liver resection in Western countries, in order to predict HD.MethodsThis prospectively designed study included consecutive adult patients undergoing hepatectomy for hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (ICC) in three French HPB centres.ResultsBetween 2012 and 2014, 147 patients were included (80% of HCC and 20% of ICC). The Child–Pugh status was grade A for all patients. In the overall population and in F3/F4 patients (n = 83), ICGR15 (P = 0.02) and platelet counts (P = 0.02) were predictive of HD under multivariate analysis. Among F3/F4 patients undergoing minor hepatectomy with preoperative ICGR15 > 15%, the rate of HD was 36%. In the overall population, ICGR15 was predictive of HD (P = 0.02) and postoperative ascites (P = 0.03). The ROC curve identified a cut‐off point of 15% as being associated with increased HD, with good accuracy for ICGR15 in the study population (AUROC 0.73), mainly before minor hepatectomy (AUROC 0.79).ConclusionsIn patients with HCC and ICC selected using the MELD score and platelet rate, an ICGR15 > 15% is a relevant, non‐invasive and clearly accurate method to predict HD specially before minor hepatectomy.
Prognostic Prediction Models for Resection of Large Hepatocellular Carcinoma: A Korean Multicenter Study
Authors: Hwang Shin , Joh Jae‐Won , Wang Hee Jung , Kim Dong Goo , Kim Kyung Sik , Suh Kyung‐Suk , Kim Seong Hoon , Yu Hee Chul , Cho Chol Kyoon , Lee Young‐Joo , Kim Ki‐Hun , Kim Jong Man , Kim Bong‐Wan , Lee Sung‐Gyu 
Published: January 2018

AbstractBackgroundWe developed a prognostic prediction model (PPM) using 4 factors for hepatic resection (HR) of large hepatic cellular carcinoma (HCC). Multiplication of α‐fetoprotein (AFP), des‐γ‐carboxy prothrombin, and tumor volume (TV) (ADV score) is a surrogate marker for post‐resection prognosis. This study intended to validate the predictive power of 4‐factor PPM and to develop new ADV score‐based PPM.MethodsA total of 526 patients who underwent HR for solitary HCC ≥ 8 cm were selected from 9 Korean institutions between 2008 and 2014.ResultsMedian tumor diameter and TV were 11.0 cm and 398 mL, respectively. Tumor recurrence and patient survival rates were 53.0 and 78.4% at 1 year and 70.2 and 49.3% at 5 years, respectively. Independent risk factors for both tumor recurrence and patient survival included AFP ≥ 100 ng/mL, hypermetabolic FDG‐positron emission tomography (PET), microvascular invasion and satellite nodules, which comprised 4 factors of the PPM. Five subgroups based on the number of involved risk factors exhibited significant differences in tumor recurrence and patient survival. ADV score cutoff was set at 7log (ADV7log) after cluster prognostic analysis. Patient grouping according to combination of ADV7log and FDG‐PET findings (ADV7log‐PET) exhibited significant differences in tumor recurrence and patient survival, comparable to those of the 4‐factor PPM.ConclusionsTwo PPMs using 4 risk factors and ADV7log‐PET could reliably predict the risk of early HCC recurrence and long‐term survival outcomes in patients who underwent HR for large HCC. We believe that these PPMs can guide surgical treatment for large HCCs from preoperative HR planning to post‐resection follow‐up.
Text‐based phenotypic profiles incorporating biochemical phenotypes of inborn errors of metabolism improve phenomics‐based diagnosis
Authors: Lee Jessica J. Y. , Gottlieb Michael M. , Lever Jake , Jones Steven J. M. , Blau Nenad , van Karnebeek Clara D. M. , Wasserman Wyeth W. 
Published: January 2018

AbstractPhenomics is the comprehensive study of phenotypes at every level of biology: from metabolites to organisms. With high throughput technologies increasing the scope of biological discoveries, the field of phenomics has been developing rapid and precise methods to collect, catalog, and analyze phenotypes. Such methods have allowed phenotypic data to be widely used in medical applications, from assisting clinical diagnoses to prioritizing genomic diagnoses. To channel the benefits of phenomics into the field of inborn errors of metabolism (IEM), we have recently launched IEMbase, an expert‐curated knowledgebase of IEM and their disease‐characterizing phenotypes. While our efforts with IEMbase have realized benefits, taking full advantage of phenomics requires a comprehensive curation of IEM phenotypes in core phenomics projects, which is dependent upon contributions from the IEM clinical and research community. Here, we assess the inclusion of IEM biochemical phenotypes in a core phenomics project, the Human Phenotype Ontology. We then demonstrate the utility of biochemical phenotypes using a text‐based phenomics method to predict gene‐disease relationships, showing that the prediction of IEM genes is significantly better using biochemical rather than clinical profiles. The findings herein provide a motivating goal for the IEM community to expand the computationally accessible descriptions of biochemical phenotypes associated with IEM in phenomics resources.
Turbulent air flow field in slot-die melt blowing for manufacturing microfibrous nonwoven materials
Authors: Xie Sheng , Han Wanli , Jiang Guojun , Chen Chao 
Published: January 2018

AbstractMelt blowing is an industrial approach for producing microfibrous nonwoven materials utilizing high-speed air to attenuate polymer melt. The melt-blowing air flow field which is widely believed to be turbulence determines the process of fiber formation. In this study, the turbulent air flow field in slot-die melt blowing was experimental measured by hot-wire anemometer. The fluctuations of air velocity and temperature, the mean velocity and mean temperature were measured and analyzed; moreover, the relationship between turbulent air flow field and fiber formation in melt blowing was discussed and predicted. In the last part of this paper, the coupling effect of air temperature and velocity was studied tentatively, results showed that air temperature not only had an enhanced effect on velocity, but contributed to the fluctuation of velocity. This work shows that the fluctuating characteristics of air velocity and temperature have dominant effect on fiber motion and the evenness of fiber diameter.
Desartrodese de anca – relato de três casos
Authors: Moura Diogo , Figueiredo António 
Published: January 2018

ResumoA desartrodese de anca, isto é, a conversão da artrodese ou fusão óssea cirúrgica em uma artroplastia de substituição articular da anca, é uma intervenção difícil e desafiante, na medida em que é preciso reconstruir uma articulação perante uma consolidação óssea e uma imobilização muitas vezes de longa duração entre fêmur e acetábulo, já com importantes alterações anatômicas e retrações dos tecidos moles adjacentes, com encurtamento do membro associado. Visto que a artrodese de anca é uma cirurgia cada vez mais raramente aplicada, consequentemente a desartrodese é cada vez menos frequente. Nesse artigo, os autores apresentam três casos raros de pacientes com artrodeses da anca de longa duração submetidos a conversão para artroplastia total e descrevem a técnica de desartrodese usada e seus resultados clínico-funcionais.
Training and assessment in functional endoscopic sinus surgery
Authors: Chan M , Carrie S 
Published: January 2018

AbstractBackground:Functional endoscopic sinus surgery is a common procedure performed within otolaryngology, but it carries potential for significant life-changing complications. It is therefore essential that trainees undergo adequate training. The European Working Time Directive has led to reduced operating time for the trainee surgeon. With variable access and the cost implications associated with cadaveric specimens, simulation can be an invaluable educational resource in surgical training. The current literature regarding the various simulation methodologies that have been used in functional endoscopic sinus surgery training is discussed.Method:A literature search was conducted using the key words ‘nasal’, ‘nasal polyps’, ‘endoscope’, ‘education and simulation’, ‘endoscopic sinus surgery’ and ‘training’.Results:Twelve articles were identified; of these, eight trialled the use of simulators, two utilised ovine models and two used task trainers.Conclusion:Simulation has shown benefit in functional endoscopic sinus surgery training; however, a robust platform accessible to ENT trainees is lacking.
Preschool psychiatric disorders: homotypic and heterotypic continuity through middle childhood and early adolescence
Authors: Finsaas Megan C. , Bufferd Sara J. , Dougherty Lea R. , Carlson Gabrielle A. , Klein Daniel N. 
Published: January 2018

AbstractBackgroundMany preschool-age children meet criteria for psychiatric disorders, and rates approach those observed in later childhood and adolescence. However, there is a paucity of longitudinal research examining the outcomes of preschool diagnoses.MethodsFamilies with a 3-year-old child (N = 559) were recruited from the community. Primary caregivers were interviewed using the Preschool Age Psychiatric Assessment when children were 3 years old (n = 541), and, along with children, using the Schedule for Affective Disorders and Schizophrenia for School-Age Children Present and Lifetime Version when children were 9 and 12 years old.ResultsRates of disruptive behavior disorders (DBD) decreased from preschool to middle childhood and early adolescence, whereas rates of attention-deficit/hyperactivity disorder (ADHD) increased. Rates of any psychiatric disorder and depression increased from preschool to early adolescence only. Preschoolers with a diagnosis were over twice as likely to have a diagnosis during later periods. Homotypic continuity was present for anxiety disorders from preschool to middle childhood, for ADHD from preschool to early adolescence, and for DBD through both later time points. There was heterotypic continuity between preschool anxiety and early adolescent depression, and between preschool ADHD and early adolescent DBD. Dimensional symptom scores showed homotypic continuity for all diagnostic categories and showed a number of heterotypic associations as well.ConclusionsResults provide moderate support for the predictive validity of psychiatric disorders in preschoolers. Psychopathology in preschool is a significant risk factor for future psychiatric disorders during middle childhood and early adolescence.
Productive activity patterns among 60–70-year-old retirees in Germany
Authors: MERGENTHALER ANDREAS , SACKREUTHER INES , STAUDINGER URSULA M. 
Published: January 2018

ABSTRACTThe phase of retirement has been steadily growing since the 1950s. Rules and regulations related to retirement have been changing. Recent cohorts have reached this phase in better health than previous ones. Until recently, retirement has been rather void of societal expectations, leaving room for individual decisions regarding amount and type of activity. Thus, investigating activity patterns displayed during this life phase, their predictors and outcomes seems overdue. The study addresses three questions: (a) Which distinct clusters of productive activities among retirees can be identified in Germany? (b) Do activity patterns of clusters follow complementary or substitutive composition rules? (c) Which are the most important predictors of cluster membership? Using probability-based sample data (N = 2,141) from the survey ‘Transitions and Old Age Potential’ (TOP), this study investigated clusters of productive activities among retirees aged 60–70 years in Germany. The activities examined included paid work after retirement, formal and informal volunteering, child care and care-giving. Results showed a four-cluster structure. The clusters (Multiple Engagers, Volunteers, Family Helpers and Family Disengagers) differed with regard to the composition and the intensity of productive activities. Both complementary and substitutive relations were identified within clusters. Individual, familial and economic resources were predictors of cluster membership. Results are discussed with regard to role theory, cumulative inequality theory and the ongoing debate about old-age potential.
Staying Out of the Closet: LGBT Older Adults’ Hopes and Fears in Considering End-of-Life
Authors: Wilson Kimberley , Kortes-Miller Katherine , Stinchcombe Arne 
Published: January 2018

RÉSUMÉLe vieillissement de la population canadienne et l’hétérogéneité des aînés amène une diversité accrue en fin de vie. L’objectif de cette étude était d’aider à combler les lacunes présentes dans la recherche du vieillissement et la fin de vie des personnes LGBT. À l’aide des groupes de discussion, nous avons tenté de mieux comprendre les expériences vécues des individus LGBT plus âgés, afin de mettre en évidence leurs inquiétudes associés aux dernières phases de la vie. Notre analyse démontre que l’identité LGBT est déterminante lorsqu’on considère le vieillissement et les soins en fin de vie. En particulier, l’identité de genre et l’orientation sexuelle sont des facteurs importants par rapport aux liens sociaux, influençant les attentes des individus envers les soins qu’ils reçoivent, à la crainte unique associée à la révélation de son homosexualité et le maintien de l’identité tout au long du vieillissement et des dernières phases de la vie. Cette étude souligne le besoin de considérer l’identité du genre et l’orientation sexuelle en fin de vie. En particulier, la reconnaissance de l’intersectionnalité et des lieux sociaux est essentielle afin de faciliter des expériences positives par rapport au vieillissement et des soins en fin de vie.
Ramsey Goodness of Bounded Degree Trees
Authors: BALLA IGOR , POKROVSKIY ALEXEY , SUDAKOV BENNY 
Published: January 2018

Given a pair of graphsGandH, the Ramsey numberR(G,H) is the smallestNsuch that every red–blue colouring of the edges of the complete graphKNcontains a red copy ofGor a blue copy ofH. If a graphGis connected, it is well known and easy to show thatR(G,H) ≥ (|G|−1)(χ(H)−1)+σ(H), where χ(H) is the chromatic number ofHand σ(H) is the size of the smallest colour class in a χ(H)-colouring ofH. A graphGis calledH-goodifR(G,H) = (|G|−1)(χ(H)−1)+σ(H). The notion of Ramsey goodness was introduced by Burr and Erdős in 1983 and has been extensively studied since then.In this paper we show that ifn≥ Ω(|H| log4|H|) then everyn-vertex bounded degree treeTisH-good. The dependency betweennand |H| is tight up to log factors. This substantially improves a result of Erdős, Faudree, Rousseau, and Schelp from 1985, who proved thatn-vertex bounded degree trees areH-good whenn≥ Ω(|H|4).
Do direct market farms use fewer agricultural chemicals? Evidence from the US census of agriculture
Authors: Schoolman Ethan D. 
Published: January 2018

AbstractAre strong local food systems better for the environment than conventional food systems where relatively close proximity between points of production and consumption is not a defining characteristic? Despite growing support for efforts to strengthen local food systems, surprisingly little is known about the relationship of local food to environmental sustainability. In particular, the relationship of local food systems to the use of agricultural chemicals to manage pests, weeds and disease has not been a subject of systematic research. In this paper, I use longitudinal data from the US Census of Agriculture to explore whether growth in local food systems is associated with decreased on-farm use of agricultural chemicals. Drawing on county-level data from 1997 to 2012, I find that an increase in the strength of local food systems—whether measured as the number of farms that market products directly to consumers, or as the total value of direct market products—has been broadly associated with a decrease in spending on agricultural chemicals in the USA as a whole. But the magnitude of the relationship between direct marketing to consumers and changes in agricultural chemical use has dwindled over time, to the point where it is not clear whether contemporary local food systems are still incentivizing farmers to reduce their use of pesticides. Overall, this study lends new credence to the idea that robust local food systems can benefit the environment. But even where just one dimension of agriculture's impact on the environment is concerned, the characteristics of local food systems appear to have varied over time—a qualification that argues strongly for further research into the relationship of local food to agricultural practice.
Microbial community assembly in wild populations of the fruit fly Drosophila melanogaster
Authors: Adair Karen L , Wilson Marita , Bost Alyssa , Douglas Angela E 
Published: January 2018

Abstract
Animals are routinely colonized by microorganisms. Despite many studies documenting the microbial taxa associated with animals, the pattern and ecological determinants of among-animal variation in microbial communities are poorly understood. This study quantified the bacterial communities associated with natural populations of Drosophila melanogaster. Across five collections, each fly bore 16–78 OTUs, predominantly of the Acetobacteraceae, Lactobacillaceae, and Enterobacteriaceae. Positive relationships, mostly among related OTUs, dominated both the significant co-occurrences and co-association networks among bacteria, and OTUs with important network positions were generally of intermediate abundance and prevalence. The prevalence of most OTUs was well predicted by a neutral model suggesting that ecological drift and passive dispersal contribute significantly to microbiome composition. However, some Acetobacteraceae and Lactobacillaceae were present in more flies than predicted, indicative of superior among-fly dispersal. These taxa may be well-adapted to the Drosophila habitat from the perspective of dispersal as the principal benefit of the association to the microbial partners. Taken together, these patterns indicate that both stochastic processes and deterministic processes relating to the differential capacity for persistence in the host habitat and transmission between hosts contribute to bacterial community assembly in Drosophila melanogaster.