bluuebunny/crossref_metadata_2025 huggingface dataset:
Corrigendum to "Forcing the snow-cover model SNOWPACK with forecasted weather data" published in The Cryosphere, 5, 1115–1125, 2011
Authors: Bellaire S. , Jamieson J. B. , Fierz C.
Published: March 2013

Abstract. This corrigendum is written to correct a misinterpretation of data used for the analysis of the paper entitled "Forcing the snow-cover model SNOWPACK with forecasted weather data". In the following we will provide corrected figures, equations and tables where applicable.
How Far above the True Anatomic Position can the Acetabular Cup be Placed in Total Hip Arthroplasty?
Authors: Fukui Kiyokazu , Kaneuji Ayumi , Sugimori Tanzo , Ichiseki Toru , Matsumoto Tadami
Published: March 2013

Introduction

There is controversy about which is more suitable for determining correct socket position in patients with severe bone deficiency of the acetabular roof because of developmental dysplasia of the hip (DDH): the anatomic centre of hip rotation or a high centre.

Method

We evaluated the relationship, in 200 hips, between the centre of rotation and presence of the Trendelenburg sign to determine the upper limit of cup position from the standpoint of hip-abductor strength.

Results

Of the 200 hips, 20 (10%) showed a positive Trendelenburg sign. There were no statistically significant differences between parameters (the centre of rotation, femoral offset, abductor lever arm) regarding the presence of the Trendelenburg sign except for age at surgery. Patients with a positive Trendelenburg sign were significantly older (64.1 ± 9.4 years) than those with a negative Trendelenburg sign (58.8 ± 7.7 years) (P = 0.01).

Conclusions

Our findings indicate that a high centre of hip rotation of up to approximately 30 mm from the inter-teardrop line is a feasible option for patients with DDH from the standpoint of hip-abductor strength if stems are used that allow the restoration of femoral offset and the abductor lever arm.
Influence of Thermal Treatment on Kankara Kaolinite
Authors: Edomwonyi-Otu Lawrence , Aderemi Benjamin , Ahmed Abdulkarim , Coville Neil , Maaza Malik
Published: March 2013

In this work, the influence of thermal treatment on the structure of Kankara kaolinite was studied for the first time, using X-ray diffractogram (XRD), EDX, NanoSEM, FTIR-Attenuated Total Reflectance, DTA/TGA and BET surface area measurements. The treatment temperatures applied represents the peak of the transformation stages. The results show that surface area decreases with increase in temperature of treatment, while its crystal structure was transformed from the native kaolinite structure via the amorphous metakaolin to the typical mullite/crystobalite structure though with some unidentifiable peaks. The morphological studies showed that Kankara kaolinite is composed of nano-platelets of about 30nm thickness and in bundles of between 1 – 3 µm thicknesses with some marked variations/reductions as the treatment temperatures increases. The DTA/TGA result shows that the kaolinite undergoes dehydroxylation at 528.560C while been converted to metakaolin with a weight loss of about 14.4%. The presence of the characteristic OH, Al-OH, Si-OH and Si-O-Al bands were confirmed with the ATR studies which also showed the disappearance and subsequent appearance of new bands as the treatment temperature increased, this also affected the surface area and pore sizes of the transformation products.
The relationship between a physician incentive plan and departmental performance in a Taiwan hospital
Authors: Liu Nai-Yng , Chu Hsuan-Lien , Liao Chiu-Chuo
Published: March 2013

The objective of this study is to investigate the influence of a physician incentive plan based upon treatment of patients in a large private non-for-profit hospital in Taiwan. We examine the relationship between physicians’ bonuses and departmental performance to assess the impact of the physician incentive plan in the case hospital. The multiple regression models are used to examine the relationship between physicians’ bonuses and departmental profitability. In addition, we use Data Envelopment Analysis (DEA) model to measure the operational efficiency of each department in the case hospital. Then, a multi-factor tobit model is used to examine the relationship between physicians’ bonuses and departmental efficiency. The results indicate that physicians’ bonuses in the case hospital are negatively correlated with departmental profitability and efficiency. That is, the performance measurement of current incentive plan may not be appropriate and it does not induce physicians to increase departmental profitability and improve efficiency. Our results suggest that the incentive plan is flawed and might fail to hold physicians accountable for improving departmental performance in the case hospital.
One Day–Fifty Years Later
Authors: Wachtel Andrew
Published: March 2013

November 2012 marks the fiftieth anniversary of the first publication of Aleksandr Solzhenitsyn's novella Odin den Ivana Denisovicha (One Day in the Life of Ivan Denisovich) in the Moscow journal Novyi mir. In this article, Andrew Wachtel considers Solzhenitsyn's pathbreaking work in its original publication context. It examines the editorial preface and the two orthodox contemporary works of Soviet socialist realism the editor chose as bookends for One Day, illustrating the ways in which the surrounding literary context serves to emphasize the socialist realist bona fides of the then unknown Solzhenitsyn. The intertextual links connecting One Day with the works that surround it help to demonstrate that at this point in his career, far from being a dissident, Solzhenitsyn could plausibly be read as an appropriate, albeit unusual, representative of official Soviet literature.
Appartenance professionnelle et articulation travail/famille. Comparaison de deux groupes professionnels : les infirmières et les policiers
Authors: Fusulier Bernard , Sanchez Émilie , Ballatore Magali
Published: March 2013

Cet article étudie la relation entre la vie professionnelle et la vie familiale en privilégiant une entrée par la profession afin de mettre en avant l’impact des spécificités de l’appartenance professionnelle sur la manière de vivre et de gérer cette relation et les tensions sous-jacentes. Pour ce faire, les auteurs prennent appui sur une enquête par questionnaire réalisée en Belgique francophone auprès de 314 infirmières-parents et de 284 policiers-parents. Ils montrent qu’au côté des différences entre les hommes et les femmes, l’appartenance professionnelle induit tendanciellement des ressentis et des modes d’atténuation de la tension en matière d’articulation de la vie professionnelle avec la vie familiale (APF) différents. Les différences observées permettent d’opposer au final deux grands modes de régulation de cette APF : l’un à caractère séquentiel dans le milieu infirmier; l’autre à caractère intégratif dans le milieu policier.
Régimes collectifs de rémunération variable, justice organisationnelle et engagement
Authors: Caron Isabelle , Ben Ayed Ahmed Khalil , Vandenberghe Christian
Published: March 2013

Cette étude examine les relations entre les caractéristiques des régimes collectifs de rémunération variable à court terme (soit des régimes qui octroient une prime aux employés en fonction du rendement), la justice organisationnelle et l’engagement organisationnel. Son intérêt pratique repose sur l’idée que les régimes de rémunération variable sont instaurés pour fidéliser les employés. À partir d’une revue de la littérature, quatre caractéristiques des régimes collectifs de rémunération variable sont identifiées : 1) le lien d’instrumentalité perçu (perception d’un lien entre le rendement et la rémunération); 2) la prime versée (le montant versé à l’employé dans le cadre du régime); 3) l’intensité de la communication organisationnelle (les sources d’information mises à la disposition des employés); et 4) les communications du supérieur immédiat relativement au régime de rémunération. Notre hypothèse centrale est que ces caractéristiques sont liées à l’engagement affectif et de continuité des employés par l’entremise de quatre dimensions de justice organisationnelle, soit la justice distributive, la justice procédurale, la justice informationnelle et la justice interpersonnelle.

À partir d’un échantillon de 313 répondants appartenant à trois ordres professionnels, des analyses d’équations structurelles révèlent que la justice procédurale médiatise la relation entre 1) l’intensité de la communication organisationnelle et la communication du supérieur et 2) l’engagement de continuité. De même, la justice informationnelle médiatise la relation entre 1) l’intensité de la communication organisationnelle et la communication du supérieur et 2) l’engagement affectif. Enfin, la justice interpersonnelle médiatise la relation entre la communication du supérieur et l’engagement de continuité. Cette étude montre que la communication par l’organisation et le supérieur immédiat quant aux règles régissant le fonctionnement des régimes collectifs de rémunération variable constituent la pierre angulaire de la perception de justice (procédurale, informationnelle et interpersonnelle) par les employés, ce qui indirectement stimule leur engagement affectif et de continuité.
La précarisation du travail : des parcours professionnels à géométrie variable
Authors: Thirot Myriam
Published: March 2013

Le développement des emplois « atypiques » au Québec donne lieu à la mise en évidence de nouveaux enjeux sociaux et politiques dans un contexte de flexibilité de la main-d’oeuvre. La segmentation du marché du travail qui en découle se caractérise par une précarisation du salariat, définie comme un processus structurel de détérioration des conditions de travail et d’emploi. La sociologie s’intéresse particulièrement aux conséquences de ces mutations sur les conditions de vie à travers l’analyse des perceptions subjectives des acteurs concernés. Ainsi, le rapport au travail incluant les conditions matérielles, l’accomplissement des tâches et la socialisation comporte une dichotomie articulée autour de la satisfaction du salarié, source de valorisation ou de la non-satisfaction, entraînant un mal-être. Les transformations récentes du monde du travail construisent des parcours professionnels morcelés et incertains et nécessitent une réévaluation de leurs impacts sur ce rapport, encore peu documentée. Que signifie occuper un emploi atypique pour ces travailleurs ? La valeur associée au travail est-elle remise en cause ? Les indices contenus dans leurs parcours professionnels constituent-ils une réalité nouvelle ? Basé sur les résultats d’une recherche qualitative menée en 2009 auprès de résidents d’un quartier défavorisé du centre-ville de Montréal, ayant occupé des emplois « atypiques », cet article permet d’entrer au coeur des dynamiques relationnelles des milieux de travail québécois, de comprendre en quoi elles participent à la construction de parcours professionnels spécifiques et d’identifier leurs conséquences sur le rapport au travail et à l’emploi de ces travailleurs. Les différentes expériences étudiées apportent un éclairage sur le phénomène de la précarisation du travail et suggèrent des perspectives tant scientifiques que politiques.
Graphene at the Atomic‐Scale: Synthesis, Characterization, and Modification
Authors: Iski Erin V. , Yitamben Esmeralda N. , Gao Li , Guisinger Nathan P.
Published: March 2013

Graphene is nature's ideal two‐dimensional conductor and is comprised of a single sheet of hexagonally packed carbon atoms. Since the first electrical measurements made on graphene, researchers have been trying to exploit the unique properties of this material for a variety of applications that span numerous scientific and engineering disciplines. In order to fully realize the potential of graphene, large scale synthesis of high quality graphene and the ability to control the electronic properties of this material on a nanometer length‐scale are necessary and remain key challenges. This article will review the efforts at the Center for Nanoscale Materials that focus on the atomic‐scale characterization and modification of graphene via scanning tunneling microscopy and its synthesis on various materials (SiC, Cu(111), Cu foil, etc.). These fundamental studies explore growth dynamics, film quality, and the role of defects. The chemical modification of graphene following exposure to atomic hydrogen will also be covered, while additional emphasis will be made on graphene's unique structural properties.
Trisomy 22 Mosaicism and Normal Developmental Outcome: Report of Two Patients and Review of the Literature
Authors: Abdelgadir Dalal , Nowaczyk Malgorzata J.M. , Li Chumei
Published: March 2013

Mosaic trisomy 22 is known to be compatible with life. However, there are fewer than 20 reports in the literature of live born children and even fewer reports describing their neurodevelopmental outcome. We report on two girls with mosaic trisomy 22 and normal development at ages 7 and 5 years. Both girls had characteristic dysmorphic features including flat nasal bridge, preauricular pits, epicanthic folds, and 5th finger clinodactyly. They also had left‐sided hemihyperplasia and short stature. In addition, one of them also had ventricular non‐compaction and probable asplenia, two unique features not previously reported. In review of the literature, prenatal and postnatal growth failures were the most common complications of mosaic trisomy 22. Skeletal abnormalities including body asymmetry and 5th finger clinodactyly were also common. While the majority of patients with mosaic trisomy 22 had abnormal cognitive development, normal development has also been documented. It is conceivable that children with trisomy 22 mosaicism, with minimal physical findings and normal development are under diagnosed. Our patients further highlight this potential for normal cognitive outcome and draw attention to possible skewing of unfavorable prognosis for the final developmental outcome in this population. Appropriate information regarding developmental outcome is critical for genetic counseling, especially in prenatal situations. © 2013 Wiley Periodicals, Inc.
Improvement of CNS Defects Via Continuous Intrathecal Enzyme Replacement by Osmotic Pump in Mucopolysaccharidosis Type II Mice
Authors: Sohn Young Bae , Lee Jeehun , Cho Sung Yoon , Kim Su Jin , Ko Ah‐Ra , Nam Mi Hyun , Jin Dong‐Kyu
Published: March 2013

Mucopolysaccharidosis type II (MPS II), also known as Hunter syndrome (OMIM 309900), is a rare, X‐linked lysosomal storage disorder caused by a deficiency of iduronate‐2‐sulfatase (IDS; EC 3.1.6.13), which is involved in the lysosomal degradation of glycosaminoglycans (GAG). Although intermittent intrathecal (IT) injection of the enzyme has been introduced as a method to overcome the blood‐brain barrier, continuous IT infusion of the enzyme would be more physiologic. This study was performed to investigate responses in the brain of MPS II mice to varying doses of continuous IT infusion of recombinant human IDS (rh‐IDS) in MPS II mice by osmotic pump in three different doses (2.4, 4.8, and 12 µg/day) of rh‐IDS for 3 weeks. The results showed that the group treated with 12 µg/day doses of rh‐IDS demonstrated decreased GAG concentrations compared to the untreated KO mice group (P = 0.003). After 3 weeks of continuous IT ERT, the brain tissues of the high‐dose IT‐treated KO mice showed a reduction of vacuolation in the cerebral cortex, thalamus and cerebellar cortex, which was not observed in the low‐ and medium‐dose KO mice groups. Moreover, the anti‐NeuN signal representing intact neuron was restored in the cortexes of the high‐dose group. In conclusion, continuous IT infusion of the deficient enzyme was effective in improving CNS defects in the MPS II mice, and could be a valuable therapeutic method for treating neurological deterioration in patients with MPS II. © 2013 Wiley Periodicals, Inc.
Rethinking Antillothrix: The Mandible and Its Implications
Authors: Rosenberger Alfred L. , Klukkert Zachary S. , Cooke Siobhán B. , Rímoli Renato
Published: March 2013

A mandible of the Hispaniolan primate Antillothrix bernensis, virtually complete and providing the only definitive evidence of the species' lower dentition, has been discovered in a submerged Dominican Republic cave. The new specimen enables a more certain assessment of the species' phylogenetic position than previously possible. It belongs to the same individual as the nearly complete young adult cranium and postrcranial elements found earlier at the same site. Of the extinct Caribbean platyrrhines, the jaw compares well with partial mandibles representing Xenothrix mcgregori, from Jamaica. Among living platyrrhines, it closely resembles Callicebus and Aotus, as documented in a biometric analysis employing three‐dimensional geometric morphometrics of Callicebus, Aotus, Pithecia, Chiropotes, Cacajao, Cebus, and Saimiri. The jaw falls within the morphological variability of Callicebus and Aotus in this three‐dimensional analysis, is otherwise most similar to Pithecia, and is distinct from cebines. Lower molars resemble the Haitian primate, Insulacebus, a genus known by a full dentition and gnathic fragments with a pattern of derived features also present in Xenothrix. Considering the available craniodental and postcranial evidence, we conclude that Antillothrix is not properly classified as cebid but rather is best grouped with Pitheciidae, an idea long central to discussions of the phylogenetic affinities of the Greater Antillean primates. Since Antillothrix and Insulacebus are more primitive anatomically than the highly modified Xenothrix, it is tempting to surmise that the origins of the latter involved a vicariance or dispersal event via Hispaniola isolating it on Jamaica. Am. J. Primatol. 75:825–836, 2013. © 2013 Wiley Periodicals, Inc.
Nasopalatine Ducts and Flehmen Behavior in the Mandrill: Reevaluating Olfactory Communication in Old World Primates
Authors: CHARPENTIER MARIE J.E. , MBOUMBA SYLVÈRE , DITSOGA CLAUDE , DREA CHRISTINE M.
Published: March 2013

Compared to other modes of communication, chemical signaling between conspecifics generally has been overlooked in Old World primates, despite the presence in this group of secretory glands and scent‐marking behavior, as well as the confirmed production and perception of olfactory signals. In other mammalian species, flehmen is a behavior thought to transport primarily nonvolatile, aqueous‐soluble odorants via specialized ducts to the vomeronasal organ (VNO). By contrast, Old World primates are traditionally thought to lack a functional VNO, relying instead on the main olfactory system to process volatile odorants from their environment. Here, in the mandrill (Mandrillus sphinx), we document unusual morphological and behavioral traits that typically are associated with the uptake of conspecific chemical cues for processing by an accessory olfactory system. Notably, we confirmed that both sexes possess open nasopalatine ducts and, in response to the presentation of conspecific odorants, we found that both sexes showed stereotyped behavior consistent with the flehmen response. If, as in other species, flehmen in the mandrill serves to mediate social or reproductive information, we expected its occurrence to vary with characteristics of either the signaler or receiver. Flehmen, particularly in a given male, occurred most often in response to odorants derived from male, as opposed to female, conspecifics. Moreover, odorants derived during the breeding season elicited more flehmen responses than did odorants collected during the birthing season. Lastly, odorants from reproductively cycling females also elicited more responses than did odorants from contracepted females. Although confirming a link between the nasopalatine ducts, flehmen behavior, and olfactory processing in mandrills would require further study, our observations provide new information to suggest anatomical variability within Old World primates, calling further attention to the underappreciated role of chemical communication in this lineage. Am. J. Primatol. 75:703‐714, 2013. © 2013 Wiley Periodicals, Inc.
Cell age–specific vulnerability of neurons to anesthetic toxicity
Authors: Hofacer Rylon D. , Deng Meng , Ward Christopher G. , Joseph Bernadin , Hughes Elizabeth A. , Jiang Connie , Danzer Steve C. , Loepke Andreas W.
Published: March 2013

Objective

Anesthetics have been linked to widespread neuronal cell death in neonatal animals. Epidemiological human studies have associated early childhood anesthesia with long‐term neurobehavioral abnormalities, raising substantial concerns that anesthetics may cause similar cell death in young children. However, key aspects of the phenomenon remain unclear, such as why certain neurons die, whereas immediately adjacent neurons are seemingly unaffected, and why the immature brain is exquisitely vulnerable, whereas the mature brain seems resistant. Elucidating these questions is critical for assessing the phenomenon's applicability to humans, defining the susceptible age, predicting vulnerable neuronal populations, and devising mitigating strategies.

Methods

This study examines the effects of anesthetic exposure on late‐ and adult‐generated neurons in newborn, juvenile, and adult mice, and characterizes vulnerable cells using birth‐dating and immunohistochemical techniques.

Results

We identify a critical period of cellular developmental during which neurons are susceptible to anesthesia‐induced apoptosis. Importantly, we demonstrate that anesthetic neurotoxicity can extend into adulthood in brain regions with ongoing neurogenesis, such as dentate gyrus and olfactory bulb.

Interpretation

Our findings suggest that anesthetic vulnerability reflects the age of the neuron, not the age of the organism, and therefore may potentially not only be relevant to children but also to adults undergoing anesthesia. This observation further predicts differential heightened regional vulnerability to anesthetic neuroapoptosis to closely follow the distinct regional peaks in neurogenesis. This knowledge may help guide neurocognitive testing of specific neurological domains in humans following exposure to anesthesia, dependent on the individual's age during exposure. ANN NEUROL 2013;73:695–704
Improving psychometric assessment of the Beck Depression Inventory using Multidimensional Item Response Theory
Authors: Fragoso Tiago M. , Cúri Mariana
Published: March 2013

We studied the latent factor structure of the Beck Depression Inventory (BDI) under the light of Multidimensional Item Response Theory models. Under a Bayesian Markov chain Monte Carlo setting, we chose the most adequate model, estimated its parameters and verified its fit to the data. An evaluation of the inventory in terms of the assumed dimensions seems to agree with previous investigations in the factor structure of the BDI present in the literature. Cognitive and somatic‐affective latent traits were identified in the analysis making possible the interpretation of symptom evolution along these dimensions, in terms of probability of their appearance.
Anatomical study of the communicating branches of cords of the brachial plexus and their clinical implications
Authors: Song Zhan‐Feng , Sun Mao‐Min , Wu Zhan‐Yong , Lv Hang‐Zhou , Xia Chun‐Lin
Published: March 2013

The aim of this study was to investigate the occurrence and patterns of the communicating branches of cords of the brachial plexus (BPs). This study was performed with 50 fixed adult cadavers (all 100 sides). The BPs were exposed, the presence of the communicating branches of BPs were determined, measured, and photographed. The communicating branches were identified in 27 sides of the BPs. According to enthesis, the communicating branches between the medial and lateral cords (25 sides) were divided into five types. The most common branches connected the lateral cord with the medial root of the median nerve (16 sides). All the communicating branches between the lateral and medial cords obliquely crossed anterior to the axillary artery and passed below the thoracoacromial artery trunk. The distance of the communicating branch with the origin of thoracoacromial artery trunk was 1.60 ± 0.64 cm. The length, transverse diameter, and anteroposterior diameter of communicating branch were 1.67 ± 0.62 cm, 1.77 ± 0.63 mm, and 1.91 ± 0.34 mm, respectively. These anatomical data about the communicating branches will be helpful for surgeons who perform surgical procedures in the cervical and axillary regions. Clin. Anat. 27:631–636, 2014. © 2013 Wiley Periodicals, Inc.
Raman Spectroscopic Insights into the Chemical Gradients within the Wound Plug of the Green Alga Caulerpa taxifolia
Authors: Weissflog Ina A. , Grosser Katharina , Bräutigam Maximilian , Dietzek Benjamin , Pohnert Georg , Popp Juergen
Published: March 2013

The invasive unicellular green macroalga Caulerpa taxifolia has spread dramatically in the Mediterranean Sea over the last decades. Its success is based on rapid plug formation after wounding, to prevent the loss of cell content. This quick and efficient process involves the rapid transformation of the secondary metabolite caulerpenyne to the reactive 1,4‐dialdehyde oxytoxin 2, which acts as a protein crosslinker. The main metabolites of the wound plug were identified as proteins, caulerpenyne derivatives, and sulfated polysaccharides. Because of a methodological deficit, however, the detailed distribution of the compounds within the wound plug of C. taxifolia was unknown. This study demonstrates the suitability of FT‐Raman spectroscopy for the noninvasive in vivo determination of caulerpenyne and its derivatives, as well as β‐carotene, from signals with special spectral features within the wound plug and the adjacent intact alga tissue, with a resolution of 100 μm. FT‐Raman spectra allowed four different zones with distinct chemical compositions around the region of wounds to be characterized. Gradients of the investigated metabolites within the wound plug and the alga could be determined. Moreover, various caulerpenyne derivatives could be identified spectroscopically, and this has led to a mechanistic proposal for the internal and the external wound plug formation.
Hybrid endovascular repair for aortic arch pathology: Intermediate outcomes and complications
Authors: Kang Woong Chol , Shin Eak Kyun , Park Chul‐Hyun , Kang Jin Mo , Ko Young‐Guk , Choi Donghoon , Youn Young Nam , Shim Won‐Heum
Published: March 2013

Objectives

To evaluate the outcomes of hybrid endovascular repair for aortic arch pathology.

Methods

This study was a retrospective analysis involving patients who underwent hybrid endovascular repair for aortic arch pathologies.

Results

Twenty‐one patients (16 men; mean age, 64.7 ± 16.2 years) with aortic arch pathologies were treated by hybrid endovascular repair. The indications for treatment included increased aneurysm size in 16 cases (71.4%), rupture or impending aneurysmal rupture in 5 cases (23.8%), and rapid growth of aortic dissection (≥10 mm/y) in 1 case (4.8%). Supra‐aortic vessel transposition and stent‐graft implantation were achieved in all cases. Two types of stent‐graft was used, as follows: the Seal thoracic stent‐graft in 14 patients (66.7%); and the Valiant stent grafts in 7 patients (33.3%). Perioperative complications affected 5 patients (23.8%), as follows: bleeding (n = 4, 19.0%); stroke (n = 3, 14.3%); renal failure (n = 2, 9.5%); vascular injury (n = 1, 4.8%), and respiratory failure (n = 1, 4.8%). Two patients died within 30 days (9.5%). Technical success was achieved in 15 patients (71.5%). Early endoleaks were noted in 4 patients (19.0%). One patient died during follow‐up (mean, 21.3 ± 11.6 months) due to a de novo intramural hematoma. Persistent early endoleaks were noted in 4 patients (19.0%); 2 of the 4 patients were successfully managed with implantation of additional stent‐grafts. No late onset endoleaks were noted. The death‐free survival and reintervention‐free survival rates during follow‐up were 85.7% and 90.5%, respectively.

Conclusion

Hybrid treatment with supra‐aortic vessel transposition and endovascular repair may be an option in frail patients in who open procedures is too risky. © 2013 Wiley Periodicals, Inc.
Effects of La, Ce, and Y Oxides on SnO2 Catalysts for CO and CH4 Oxidation
Authors: Xu Xianglan , Zhang Rongbin , Zeng Xianrong , Han Xue , Li Yucheng , Liu Yang , Wang Xiang
Published: March 2013

SnO2‐based catalysts modified by La, Ce, and Y with a Sn/Ln (Ln=La, Ce, Y) atomic ratio of 2:1 were prepared by using a co‐precipitation method and used for CO and CH4 oxidation. The catalysts were characterized by N2 adsorption–desorption, XRD, energy dispersive X‐ray spectroscopy (EDS)‐SEM, H2 temperature‐programmed reduction (TPR), X‐ray photoelectron spectroscopy (XPS), and thermogravimetric analysis differential scanning calorimetry (TGA‐DSC) techniques. All three rare earth metal oxides were found to improve the thermal stability of SnO2, which resulted in catalysts with much higher surface areas and smaller crystallite and particle sizes. However, only the addition of Ce resulted in a catalyst with improved activity for both CO and CH4 oxidation. In contrast, La and Y modification resulted in samples with decreased activity for both reactions. For the Ce‐modified sample, Ce cations were found to dope into the lattice of rutile SnO2 to form a solid‐solution structure. As a lattice impurity, ceria, the well‐known oxygen storage component (OSC), led to the formation of more defects in the matrix of SnO2 and impeded the crystallization process, which resulted in a catalyst with a higher surface area and more active oxygen species. In contrast, XRD proved that the addition of La and Y mainly led to the formation of more stable and inert pyrochlore compounds, Sn2La2O7 and Sn2Y2O7, which disrupted a major part of the active sites based on SnO2. Consequently, the oxidation activity was impaired, although these two samples also have higher surface areas than pure SnO2. The Ce‐modified sample showed not only high activity but also good reaction durability and thermal stability. Furthermore, Sn‐Ce binary oxide is a better support than SnO2, CeO2, and traditional Al2O3 supports for Pd, which gives it the potential to be applied in some real after‐treatment applications.
Palladium‐Catalysed Regioselective Direct Arylations of Heteroarenes by Bromobenzamides: Direct Synthesis of Heteroaryl Benzamides
Authors: Chen Lu , Bruneau Christian , Dixneuf Pierre H. , Doucet Henri
Published: March 2013

The Pd‐catalysed direct arylation of heteroarene CH bonds by 2‐ or 4‐bromobenzamides has been achieved. In the presence of KOAc as the base, no CN bond formation or CC coupling of two bromobenzamides was observed. Both primary and tertiary amides can be employed for CC cross‐coupling of 4‐bromobenzamides with a variety of heteroarenes to give the C5‐arylated heteroarenes in good yields by using a low loading (0.5 mol %) of Pd(OAc)2 catalyst. However, no coupling product was observed with 2‐bromobenzamide, and a moderate reactivity of 2‐bromo‐N,N‐diethylbenzamide has been observed with 2 mol % PdCl(C3H5)(dppb) (dppb=1,4‐bis(diphenylphosphino)butane) as the catalyst. A moderate influence due to the nature of the heteroarene was observed, and thiazoles, thiophenes, furans and pyrroles have been arylated successfully. The reaction of a thiazole with 2‐bromo‐N‐phenylbenzamide led to a six‐membered ring product by intramolecular cyclisation, whereas a 2‐bromo‐N‐benzylbenzamide gave the desired intermolecular coupling product.
Reversible Phase Transfer of Luminescent ZnO Quantum Dots between Polar and Nonpolar Media
Authors: Zhang Chengbo , Li Keyan , Song Shuyan , Xue Dongfeng
Published: March 2013

A facile and reversible phase‐transfer protocol for luminescent ZnO quantum dots (QDs) between methanol and hexane is presented. Oleylamine together with acetic acid trigger this reversible phase‐transfer process, during which the structure and optical properties of the ZnO QDs are well‐protected. ZnO QDs with a diameter of approximately 5 nm emit yellow light at 525 nm, while those with a diameter of approximately 4 nm emit green light at 510 nm. The positions of the emission peaks remain unchanged during the presented phase‐transfer process. The Pearson’s hard and soft (Lewis) acid and base principle, together with the principle that similar substances are more likely to be dissolved by each other, describes the current reversible phase‐transfer process. Herein, we circumvent the time‐consuming work required to synthesize ZnO QDs in different environments, making it possible to combine the advantages of ZnO QDs dispersed in polar and nonpolar solvents.
The Aza‐Morita–Baylis–Hillman Reaction: A Mechanistic and Kinetic Study
Authors: Lindner Christoph , Liu Yinghao , Karaghiosoff Konstantin , Maryasin Boris , Zipse Hendrik
Published: March 2013

The aza‐Morita‐Baylis–Hillman (aza‐MBH) reaction has been studied in a variety of solvents, a selection of imine substrates and with various combinations of PPh3 and para‐nitrophenol as the catalyst system. The measured kinetic data indicates that the effects of solvent and protic co‐catalyst are strongly interdependent. These results are most easily reconciled with a mechanistic model involving the reversible protonation of zwitterionic intermediates in the catalytic cycle, which is also supported by 31P NMR spectroscopy and quantum chemical studies.
ChemInform Abstract: A First‐Principles Study on Chromium Sesquioxide, Cr2O3
Authors: Wessel C. , Dronskowski R.
Published: March 2013

DFT calculations for the high‐pressure polymorph
ChemInform Abstract: Crystal Structure and Electronic Properties of the New Compound U3Fe4Ge4.
Authors: Berthebaud D. , Tougait O. , Potel M. , Lopes E. B. , Waerenborgh J. C. , Goncalves A. P. , Noel H.
Published: March 2013

The new title compound is obtained from a stoichiometric melt of the elements.
ChemInform Abstract: An Efficient Charge Compensated Red Phosphor Sr3WO6:K+,Eu3+ — For White LEDs.
Authors: Zhao Xin , Ding Yufeng , Li Zhaosheng , Yu Tao , Zou Zhigang
Published: March 2013

The title phosphor is synthesized by solid state reaction of SrCO3, K2CO3, WO3, and Eu2O3 (1100 °C, 30 h).
ChemInform Abstract: Synthesis, Structures, and Photochemistry of Tricarbonyl Metal Polyoxoanion Complexes, [X2W20O70{M(CO)3}2] 12‐ (X: Sb, Bi and M: Re, Mn).
Authors: Zhao Chongchao , Kambara Choon Sung , Yang Ye , Kaledin Alexey L. , Musaev Djamaladdin G. , Lian Tianquan , Hill Craig L.
Published: March 2013

Compounds (IIIa,b) and (Va,b) are characterized by XRD, UV/VIS spectroscopy, and DFT calculations.
ChemInform Abstract: Acceptorless and Base‐Free Dehydrogenation of Alcohols and Amines Using Ruthenium‐Hydride Complexes.
Authors: Muthaiah Senthilkumar , Hong Soon Hyeok
Published: March 2013

Shov′s complex Ru2(CO)4(C5Ph4OH)2 shows the best activity for the oxidation of both secondary alcohols and nitrogen‐containing heterocyclic compounds amongst other tested ruthenium‐hydride complexes.
ChemInform Abstract: IF5—Pyridine—HF: Air‐ and Moisture‐Stable Fluorination Reagent.
Authors: Hara Shoji , Monoi Miki , Umemura Ryosuke , Fuse Chiaki
Published: March 2013

The title reagent, prepared by mixing equimolar amounts of IF5 with HF· pyridine, is found to be an efficient reagent for the desulfurative fluorination of thio compounds as well as introduction of fluorine to the α‐position of sulfides.
ChemInform Abstract: Tandem Palladium(0) and Palladium(II)‐Catalyzed Allylic Alkylation Through Complementary Redox Cycles.
Authors: Trost Barry M. , Thaisrivongs David A. , Hansmann Max M.
Published: March 2013

The nature of the leaving group in the first half of the tandem process is essential for the success of the second half.
ChemInform Abstract: Easily Removable Olefin Metathesis Catalysts.
Authors: Skowerski Krzysztof , Wierzbicka Celina , Szczepaniak Grzegorz , Gulajski Lukasz , Bieniek Michal , Grela Karol
Published: March 2013

The products of the presented reaction are purified from Ru‐residues using filtration through a small amount of silica gel or its extraction with water.
ChemInform Abstract: A Polystyrene‐Supported, Highly Recyclable Squaramide Organocatalyst for the Enantioselective Michael Addition of 1,3‐Dicarbonyl Compounds to β‐Nitrostyrenes.
Authors: Kasaplar Pinar , Riente Paola , Hartmann Caroline , Pericas Miquel A.
Published: March 2013

A chiral squaramide supported onto a polystyrene resin is used as a very active, easily recoverable and highly reusable organocatalyst for the asymmetric Michael addition of 1,3‐dicarbonyl compounds to β‐nitrostyrenes.
ChemInform Abstract: Ruthenium Phenylindenyl Complex as an Efficient Transfer Hydrogenation Catalyst.
Authors: Manzini Simone , Urbina‐Blanco Cesar A. , Nolan Steven P.
Published: March 2013

An efficient and green protocol for the transfer hydrogenation of aldehydes, ketones, and imines is presented by using an inexpensive, easily synthesized, and one of the most efficient ruthenium arene transfer hydrogenation catalysts reported to date.
ChemInform Abstract: Tandem Hydroboration/Reduction of Trisubstituted β,γ‐Unsaturated Esters for the Asymmetric Synthesis of Chiral 1,3‐Diols.
Authors: Fordred Paul S. , Bull Steven D.
Published: March 2013

Hydroboration/reduction of β,γ‐unsaturated esters with (‐)‐isopinocampheylborane, followed by oxidation with alkaline hydrogen peroxide results in the formation of optically active 1,3‐diols.
ChemInform Abstract: Highly Active and Selective Synthesis of Imines from Alcohols and Amines or Nitroarenes Catalyzed by Pd/DNA in Water with Dehydrogenation.
Authors: Tang Lin , Sun Huayin , Li Yunfeng , Zha Zhenggen , Wang Zhiyong
Published: March 2013

The catalyst can be recovered and reused for at least five times due to its water‐soluble reversibility.
ChemInform Abstract: Silver‐Catalyzed C—C and C—S Coupling of Aryl Halides and Thiols with Boronic Acids.
Authors: Das Rima , Chakraborty Debashis
Published: March 2013

The utility of Ag(I) salts in the different processes is demonstrated.
ChemInform Abstract: Rhodium‐Catalyzed Oxidative ortho‐Acylation of Aryl Ketone O‐Methyl Oximes with Aryl and Alkyl Aldehydes.
Authors: Yang Yaxi , Zhou Bing , Li Yuanchao
Published: March 2013

The presented title reaction is applicable to both (hetero)aryl and aliphatic aldehydes tolerating a variety of functional groups.
ChemInform Abstract: Palladium—Polypyrrole Nanoparticles‐Catalyzed Sonogashira Coupling.
Authors: Magdesieva Tatiana V. , Nikitin Oleg M. , Zolotukhina Ekaterina V. , Zinovieva Veronika A. , Vorotyntsev Mikhail A.
Published: March 2013

Pd‐Nanoparticles encapsulated into polypyrrole globules are found to be an active catalyst for the Sonogashira coupling of iodo‐ and bromoarenes.
ChemInform Abstract: Rhenium‐Catalyzed Regioselective Synthesis of 1,2‐Disubstituted Naphthalenes.
Authors: Umeda Rui , Nishi Satoru , Kojima Aya , Kaiba Kenta , Nishiyama Yutaka
Published: March 2013

A rhenium complex‐catalyzed reaction of internal alkynes with phenylacetaldehyde dimethylacetal in the presence of stoichiometric amounts of water is reported to give low to moderate yields of 1,2‐disubstituted naphthalenes.
ChemInform Abstract: Proline Confined FAU Zeolite: Heterogeneous Hybrid Catalyst for the Synthesis of Spiroheterocycles via a Mannich Type Reaction.
Authors: Arya Kapil , Rajesh U. Chinna , Rawat Diwan Singh
Published: March 2013

The L‐proline confined zeolite catalyst is effective in the preparation of the novel spirocyclic pyrimidine derivatives in the three‐component condensation of lactams/cyclic ketones, amines, and formaldehyde.
ChemInform Abstract: Convenient Access to Strained Trisubstituted 2‐Azetines from Enals and Chloramine‐T in Aqueous Media.
Authors: Singh Atul K. , Chawla Ruchi , Yadav Lal Dhar S.
Published: March 2013

Key features of this reaction are easily accessible substrates, operational simplicity, wide substrate scope and ambient temperature.
ChemInform Abstract: Cyanide as a Powerful Catalyst for Facile Preparation of 2‐Substituted Benzoxazoles via Aerobic Oxidation.
Authors: Cho Yeon Ho , Lee Chun‐Young , Ha Deok‐Chan , Cheon Cheol‐Hong
Published: March 2013

A more efficient and scalable synthesis of benzoxazoles from the Schiff bases (I) and (III) is developed tolerating several functional groups.
ChemInform Abstract: A Facile Sequential Three‐Component Regio‐ and Stereoselective Synthesis of Novel Spiro‐isoxazoline/Acridinone Hybrids.
Authors: Maheswari Shanmugavel Uma , Perumal Subbu
Published: March 2013

Initial Knoevenagel condensation and nitrile oxide generation are followed by 1,3‐dipolar cycloaddition to produce novel 24 title compounds as important pharmacophores.
ChemInform Abstract: Synthesis and Selective Inhibitory Activity Against Human COX‐1 of Novel 1‐(4‐Substituted‐thiazol‐2‐yl)‐3,5‐di(hetero)aryl‐pyrazoline Derivatives.
Authors: Carradori Simone , Secci Daniela , Bolasco Adriana , De Monte Celeste , Yanez Matilde
Published: March 2013

New pyrazoline derivatives (Vc), (Vd), (Vf)—(Vh) display promising inhibitory activities against human cyclooxygenase‐1 in the micromolar range, similar or better than the reference drugs indometacin and diclofenac.
ChemInform Abstract: Conventional and Microwave Assisted Synthesis of New Benzotriazole Derivatives and Their Antimicrobial Potential.
Authors: Shukla D. K. , Sen J. P. , Jain A. K.
Published: March 2013

The synthesized benzotriazole derivatives (V) show significant antibacterial and antifungal activities.
ChemInform Abstract: Synthesis of Substituted 6H‐Benzo[c]chromenes: A Palladium‐Promoted Ring Closure of Diazonium Tetrafluoroborates.
Authors: Zhou Jing , Huang Liang‐Zhu , Li You‐Qiang , Du Zhen‐Ting
Published: March 2013

The extremely efficient method allows a rapid access to the biologically important heterocycle.
ChemInform Abstract: Uncatalyzed Knoevenagel Condensation of 3‐Formylchromones in Green Media: Polyethylene Glycol 400 (PEG‐400).
Authors: Suresh Suresh , Kumar Dhruva , Sandhu Jagir S.
Published: March 2013

An efficient, rapid, and environmentally benign Knoevenagel condensation of 3‐formylchromones with several active methylene compounds under microwave irradiation is developed.
ChemInform Abstract: An Efficient One‐Pot Organocatalytic Synthesis of 9‐(1H‐Indol‐3‐yl)‐xanthen‐4‐(9H)‐ones under Mild Aqueous Micellar Conditions.
Authors: Ganguly Nemai C. , Roy Sushmita , Mondal Pallab , Saha Rajat
Published: March 2013

Electron‐rich indoles and N,N‐dimethylaniline are successfully coupled with o‐hydroxybenzaldehydes and dimedone in the presence of L‐proline.
ChemInform Abstract: Heterocyclization of Arylmethylidene Derivatives of Malononitrile Dimer: Synthesis of 4‐Amino‐6‐aryl‐2‐halopyridine‐3,5‐dicarbonitriles.
Authors: Bardasov Ivan N. , Mihailov Denis L. , Alekseeva Anastasiya U. , Ershov Oleg V. , Nasakin Oleg E.
Published: March 2013

Highly functionalized pyridines are prepared via nucleophilic addition of arylmethylidene derivatives of malononitrile dimer halides to hydrogen (I) followed by cyclization and aromatization under the action of SeO2 or Br2 as the oxidizing agent.
ChemInform Abstract: New Self‐Transformation of Cyanothioacetamide in the Presence of Bases.
Authors: Dyachenko V. D.
Published: March 2013

The self‐transformation of cyanothioacetamide (I) in the presence of an equimolar amount of piperidine leads to the formation of 4,6‐diamino‐2‐thioxo‐1,2‐dihydropyridine‐3‐carbonitrile (II).
ChemInform Abstract: Radical Cation Salt Induced Povarov Reaction Between Iminoethyl Glyoxylate and N‐Vinylamides: Synthesis of Quinoline‐2‐carboxylate Derivatives.
Authors: Jia Xiaodong , Qing Chang , Huo Congde , Peng Fangfang , Wang Xicun
Published: March 2013

The process renders possible the access to target compounds of pharmaceutical interest.
ChemInform Abstract: Use of the Graeble‐Ullmann Reaction in the Synthesis of 8‐Methyl‐γ‐carboline and Isomeric Aromatic Aza‐γ‐carbolines.
Authors: Alekseev R. S. , Kurkin A. V. , Yurovskaya M. A.
Published: March 2013

The Graeble‐Ullmann Reaction is applied for the synthesis of various carbolines.
ChemInform Abstract: Synthesis of Novel 1,2,3,6‐Tetraazapyrene Heterocyclic System Representatives — 3,8‐Dihydropyrido[2′,3′,4′:4,5]naphtho[1,8‐de] [1,2,3]triazin‐7(6H)‐ones.
Authors: Aksenov A. V. , Aksenov N. A. , Kumshaeva A. B. , Smirnov A. N. , Nadein O. N.
Published: March 2013

Three of the title compounds are synthesized in moderate yields by reaction of naphthotriazine (I) with β‐nitrostyrenes.
ChemInform Abstract: New Chemosensor Systems of the Benzo‐[de]isoquinoline‐1,3‐dione Series.
Authors: Tolpygin I. E. , Shepelenko E. N. , Revinskii Yu. V. , Dubonosov A. D. , Bren V. A. , Minkin V. I.
Published: March 2013

Compounds (I) and (II) show high chemosensor selectivity in the determination of anions.
ChemInform Abstract: Organocatalytic Enantioselective Aza‐Michael Addition of Purine Bases to α,β‐Unsaturated Ketones.
Authors: Wu Hao , Tian Zhiqing , Zhang Lili , Huang Yaodong , Wang Yongmei
Published: March 2013

The corresponding Michael adducts are obtained in good yields and high enantioselectivities.
ChemInform Abstract: Syntheses of (4,4,5,5‐Tetramethyl‐1,3,2‐dioxaborolan‐2‐yl)arenes Through Pd‐Catalyzed Borylation of Arylbromides with the Successive Use of 2,2′‐Bis(1,3,2‐benzodioxaborole) and Pinacol.
Authors: Takagi Jun , Yamakawa Tetsu
Published: March 2013

Palladium catalyzed borylation of aryl bromides through sequential treatment with 2,2′‐bis(1,3,2‐benzodioxaborole) and pinacol allows the synthesis of the title compounds (II) and (V).
ChemInform Abstract: Three New D‐Lactone Ring Isomeric Phragmalin‐Type Limonoids from Chukrasia tabularis var. velutina
Authors: Li Yi , Luo Jun , Wang Qiang , Kong Ling‐Yi
Published: March 2013

isolation and structure elucidation of tabulalins G (I), H (II), and I (III)
ChemInform Abstract: Second Generation Graphene: Opportunities and Challenges for Surface Science
Authors: Agnoli Stefano , Granozzi Gaetano
Published: March 2013

Review: 84 refs.
ChemInform Abstract: Effect of Catalyst Synthesis Parameters on the Metal Particle Size
Authors: Maki‐Arvela Paivi , Murzin Dmitry Yu.
Published: March 2013

Review: 122 refs.
ChemInform Abstract: Alumina: A Key‐Component of Structured Catalysts for Process Intensification
Authors: Visconti Carlo Giorgio
Published: March 2013

Review: 42 refs.
ChemInform Abstract: PC(sp3)P Transition Metal Pincer Complexes: Properties and Catalytic Applications
Authors: Gelman Dmitri , Romm Ronit
Published: March 2013

Review: 104 refs.
ChemInform Abstract: Catalytic Materials that Improve Selectivity of Biomass Conversions
Authors: Dutta Saikat
Published: March 2013

Review: 181 refs.
ChemInform Abstract: Synthesis and Biology of N‐Thiolated β‐Lactams.
Authors: Bhattacharya Biplob , Turos Edward
Published: March 2013

Review: 23 refs.
ChemInform Abstract: Fullerene‐Containing Rotaxanes and Catenanes
Authors: Mateo‐Alonso Aurelio
Published: March 2013

Review: 74 refs.
ChemInform Abstract: Morita—Baylis—Hillman and Rauhut—Currier Reactions of Conjugated Nitroalkenes
Authors: Kaur Kirandeep , Namboothiri Irishi N. N.
Published: March 2013

Review: 81 refs.
ChemInform Abstract: Recent Progress in Nonclassical Isocyanide‐Based MCRs
Authors: Ramon Rosario , Kielland Nicola , Lavilla Rodolfo
Published: March 2013

Review: 135 refs.
ChemInform Abstract: Sulfines, a Unique Class of Sulfur‐Centered Heterocumulenes
Authors: Zwanenburg Binne
Published: March 2013

Review: 58 refs.
ChemInform Abstract: Gold Nanoparticles as Computerized Tomography (CT) Contrast Agents
Authors: Xi Da , Dong Sheng , Meng Xiaoxi , Lu Qinghua , Meng Lingjie , Ye Jin
Published: March 2013

Review: 114 refs.