bluuebunny/crossref_metadata_2025_split huggingface dataset:
Trajectories and predictors of indirect aggression: results from a nationally representative longitudinal study of Canadian children aged 2–10
Authors: Vaillancourt Tracy , Miller Jessie L. , Fagbemi Joshua , Côté Sylvana , Tremblay Richard E. 
Published: April 2007

AbstractThe purposes of this study were to model the development of indirect aggression among a nationally representative sample of 1,401 Canadian children aged 4 at T2, 6 at T3, 8 at T4 and 10 at T5, and to examine predictors of trajectory group membership from T1 (age 2) child, familial, and parenting variables. Using a semi‐parametric group‐based modeling approach, two distinct trajectories were identified: “increasing users” comprising of 35% of the sample and “stable low users” comprising of 65% of the sample. Using logistic regression analyses to distinguish these two groups, we found that for girls, more frequent, increasing use of indirect aggression was associated with prior prosocial and physically aggressive behavior, low SES and low parental social support at age 2. For boys, increasing use of indirect aggression was associated with prior parenting issues at age 2—inconsistency and less positive parent–child interactions. Although this study provides unique information regarding the early development of indirect aggression and its predictors, more longitudinal research is needed to fully understand its development. Aggr. Behav. 33:314–326, 2007. © 2007 Wiley‐Liss, Inc.
The alcohol–aggression link: children's aggression expectancies in marital arguments as a function of the sobriety or intoxication of the arguing couple
Authors: El‐Sheikh Mona , Elmore‐Staton Lori 
Published: April 2007

AbstractChildren's expectancies of man–woman and woman–man aggression during arguments between individuals who were either intoxicated or sober were examined. The role of child and familial characteristics in influencing these expectancies was assessed. We examined children's expectations of interadult verbal/psychological and physical aggression during simulated arguments presented to children on videotapes. A community sample (N = 156) of children and young adolescents (6–14‐year olds) participated. Children expected higher levels of aggression during conflict when they thought that one or both participants in conflict were intoxicated versus sober. Further, higher levels of verbal versus physical interadult conflict were expected during the disputes. These findings build on the literature by demonstrating that elementary school age children and young adolescents exhibit expectancies that link the consumption of alcohol with increased verbal and physical aggression in marital arguments. These alcohol–aggression expectancies were robust and were evident in relation to either the man's or woman's perpetration of aggression against the spouse. Elucidation of factors that can influence associations between aggression and alcohol consumption are of importance and have broad implications for family functioning. Aggr. Behav. 33:458–466, 2007. © 2007 Wiley‐Liss, Inc.
Optimal design of batch‐storage network considering exchange rates and taxes
Authors: Yi Gyeongbeom , Reklaitis Gintaras V. 
Published: April 2007

AbstractThis article presents an integrated analysis of the supply chain and financing decisions of multinational corporations. We construct a model in which multiple currency storage units are installed to manage the currency flows associated with multinational supply chain activities such as raw material procurement, processing, inventory control, transportation, and finished product sales. Temporary financial investments, bank loans, and currency transfer between multiple nations are allowed to increase the marginal profit. The core contribution of this study is its quantitative investigation of the influence of macroscopic economic factors such as exchange rates and taxes on operational decisions. The supply chain is modeled as a batch‐storage network with recycling streams. The objective function of the optimization involves minimizing the opportunity costs of annualized capital investments and currency/material inventories minus the benefit to stockholders in the numeraire currency. The major constraints of the optimization are that the material and currency storage units must not be depleted. A production and inventory analysis formulation (the periodic square wave model) provides useful expressions for the upper and lower bounds and average levels of the currency and material inventory holdings. The expressions for the Kuhn‐Tucker conditions of the optimization problem are reduced to a subproblem and analytical lot‐sizing equations. The lot sizes of procurement, production, transportation, and financial transaction can be determined by analytical expressions once the average flow rates are known. We show that the optimal production lot and storage sizes are typically 20% smaller when corporate income tax is taken into consideration than when it is not considered. An illustrative example is presented to demonstrate the potential of this approach. © 2007 American Institute of Chemical Engineers AIChE J, 2007
Folding Dynamics of 10‐Residue β‐Hairpin Peptide Chignolin
Authors: Suenaga Atsushi , Narumi Tetsu , Futatsugi Noriyuki , Yanai Ryoko , Ohno Yousuke , Okimoto Noriaki , Taiji Makoto 
Published: April 2007

AbstractShort peptides that fold into β‐hairpins are ideal model systems for investigating the mechanism of protein folding because their folding process shows dynamics typical of proteins. We performed folding, unfolding, and refolding molecular dynamics simulations (total of 2.7 μs) of the 10‐residue β‐hairpin peptide chignolin, which is the smallest β‐hairpin structure known to be stable in solution. Our results revealed the folding mechanism of chignolin, which comprises three steps. First, the folding begins with hydrophobic assembly. It brings the main chain together; subsequently, a nascent turn structure is formed. The second step is the conversion of the nascent turn into a tight turn structure along with interconversion of the hydrophobic packing and interstrand hydrogen bonds. Finally, the formation of the hydrogen‐bond network and the complete hydrophobic core as well as the arrangement of side‐chain–side‐chain interactions occur at approximately the same time. This three‐step mechanism appropriately interprets the folding process as involving a combination of previous inconsistent explanations of the folding mechanism of the β‐hairpin, that the first event of the folding is formation of hydrogen bonds and the second is that of the hydrophobic core, or vice versa.
Formal Total Synthesis of (−)‐Apicularen A by a Strategy Based on Ring‐Closing Metathesis and Transannular Cyclization
Authors: Jung Young‐Hee , Kim Young‐Ju , Lee Jieun , Tae Jinsung 
Published: April 2007

AbstractA formal synthesis of (−)‐apicularen A, a potent antitumor agent with unique biological properties, has been completed in a 15‐step sequence starting from a known, enantiomerically pure hydroxyepoxide, which was generated by using the Jacobsen hydrolytic‐kinetic‐resolution methodology. The 12‐membered macrocyclic lactone in the target was constructed by ring‐closing metathesis, and thetrans‐tetrahydropyran ring system was created through the transannular etherification of a hydroxyalkene.
Development and Analysis of Modified Paired Comparisons by Use of Linearized Nonlinear Regression
Authors: Walsh John E. 
Published: April 2007

AbstractThe linearized nonlinear regression method (Walsh, 1963) has substantial curve‐fitting flexibility. It also permits isolation and probabilistic investigation of pertinent effects, and can be used for developing paired comparisons for persons, animals, or plants (“items” of a given type). Here, an item is identified by the values for specified characteristics, and two kinds of “treatment” (e. g., exposure and nonexposure to radiation) are compared with respect to observed values for a given characteristic. Ideally, two items being compared for treatment effect should be the same with regard to the other characteristics (those not used for comparison). That is, they should have the same set of values for these other characteristics. This ideal situation seldom occurs. However, by suitable use of the linearized nonlinear regression model, composite items can be constructed (for given treatment) that are the same with respect to the other characteristics. Modified paired comparisons are obtained on the basis of these composite items. The probability properties of modified paired comparisons can be very heterogeneous, so that special concepts and statistical techniques are needed. Two approaches for development of tests and confidence intervals are given. Some applications involving exposure to radiation are discussed.
Silica‐immobilized enzymes for multi‐step synthesis in microfluidic devices
Authors: Luckarift Heather R. , Ku Bosung S. , Dordick Jonathan S. , Spain Jim C. 
Published: April 2007

AbstractThe combinatorial synthesis of 2‐aminophenoxazin‐3‐one (APO) in a microfluidic device is reported. Individual microfluidic chips containing metallic zinc, silica‐immobilized hydroxylaminobenzene mutase and silica‐immobilized soybean peroxidase are connected in series to create a chemo‐enzymatic system for synthesis. Zinc catalyzes the initial reduction of nitrobenzene to hydroxylaminobenzene which undergoes a biocatalytic conversion to 2‐aminophenol, followed by enzymatic polymerization to APO. Silica‐immobilization of enzymes allows the rapid stabilization and integration of the biocatalyst within a microfluidic device with minimal preparation. The system proved suitable for synthesis of a complex natural product (APO) from a simple substrate (nitrobenzene) under continuous flow conditions. Biotechnol. Bioeng. 2007;98: 701–705. © 2007 Wiley Periodicals, Inc.
Isolated tumour cells in blood and E-cadherin expression in oesophageal squamous cell cancer
Authors: Setoyama T , Natsugoe S , Okumura H , Matsumoto M , Uchikado Y , Aikou T 
Published: April 2007

Abstract

Background
Patients with oesophageal squamous cell carcinoma have a high rate of recurrence, even after curative resection. The aim of this study was to examine the correlation between the presence of isolated tumour cells (ITCs) in the blood and recurrence, and between the presence of ITCs and E-cadherin expression in the primary tumour in these patients.

Methods
Blood samples obtained immediately before and after resection in 125 patients with oesophageal squamous cell carcinoma were examined by real-time reverse transcription–polymerase chain reaction using carcinoembryonic antigen mRNA. Blood samples from 28 healthy volunteers and 42 patients with benign diseases were used as controls.

Results
Seventy-seven patients (61·6 per cent) were ITC positive. ITC positivity correlated significantly with tumour depth, lymph node metastasis, stage, lymphatic invasion and venous invasion. Multivariable analysis revealed that tumour depth and ITC positivity were independent factors for a shortened haematogenous disease-free interval. A significant correlation was found between ITC positivity and reduced E-cadherin expression in the primary tumour (P &lt; 0·001). ITC-positive patients with preserved E-cadherin expression had a longer disease-free interval (P = 0·016), haematogenous disease-free interval (P = 0·020) and overall survival (P = 0·004) than those with reduced E-cadherin expression.

Conclusion
Examination of ITCs in the blood is useful for predicting haematogenous recurrence in patients with oesophageal squamous cell carcinoma.
The basilar venous plexus
Authors: Tubbs R. Shane , Hansasuta Ake , Loukas Marios , Louis Robert G. , Shoja Mohammadali M. , Salter E. George , Oakes W. Jerry 
Published: April 2007

AbstractThe basilar venous plexus is the anteromedian venous channel of the posterior cranial fossa that has many conflicting and brief descriptions in the extant literature. To our knowledge, no single study has been performed that analyzed this venous structure in detail. The aim of the current study was to elucidate further the anatomy of this structure of the posterior cranial fossa. The authors examined twenty adult cadaveric specimens following injection of the internal jugular veins or cavernous sinus to observe the morphology of the basilar plexus. All specimens were found to have a basilar plexus which was always plexiform and very variable in nature. This structure was dorsal to the clivus superiorly and dorsal clivus and overlying tectorial membrane inferiorly. The mean diameter of the channels making up this plexus was 1.1 mm. Communication was always found between the basilar plexus and the inferior petrosal sinuses and this was the primary route used to drain the basilar sinus out of the cranium. In fact, these two venous structures were more or less contiguous across the midline at multiple levels. In seven specimens (35%), the basilar plexus communicated with veins draining into the hypoglossal canal. The basilar plexus communicated with the marginal sinus in 12 specimens (60%). This plexus became much less concentrated as it descended inferior to a plane between the jugular tubercles. No specimen was found to have connections with veins of the anterior brain stem or ventral surface of the clivus. The basilar plexus is a highly variable posterior fossa venous structure. Clinicians and radiologists should take into account this variability when managing cerebral venous disorders or interpreting imaging studies of the skull base. Clin. Anat. 20:755–759, 2007. © 2007 Wiley‐Liss, Inc.
Bone formation as a potential motive force of tooth eruption in the rat molar
Authors: Wise Gary E. , Yao Shaomian , Henk William G. 
Published: April 2007

AbstractThe objectives of this anatomical study were to (1) determine if significant bone growth occurs in the base of the alveolar bony crypt of the first mandibular molar to move the tooth through the eruption pathway; (2) determine if the osteogenesis in the crypt correlates with the published chronological gene expression of bone morphogenetic protein‐2 (BMP‐2) in the dental follicle; and (3) determine chronologically and regionally the crypt bone activity. To accomplish this, the alveolar bony crypts of rat mandibular molars from postnatal days 3 to 18 were processed and examined by scanning electron microscopy (SEM). In addition, mandibles and teeth of ages 12–18 were prepared for light microscopy. SEM demonstrated that bone formation occurs in the basal (apical) portion of the alveolar bony crypt at day 3, whereas bone resorption concurrently is ongoing in the coronal region of the crypt. By day 9, the crypt is beginning to be reduced in depth as the result of basal bone formation, and by day 14, the base of the crypt immediately under the tooth is almost completely filled with bone to form the interradicular septum. At day 18, the tooth erupts as bone formation likely elevates the molar. Bone growth in the basal area of the crypt correlates with a previous study showing enhanced BMP‐2 expression in the dental follicle. Thus, SEM indicates that the motive force of tooth eruption likely is bone formation at the base of the alveolar crypt and this osteogenesis may relate to BMP‐2 production in the dental follicle. Clin. Anat. 20:632–639, 2007. © 2007 Wiley‐Liss, Inc.
Using computer vision to simulate the motion of virtual agents
Authors: Musse Soraia R. , Jung Cláudio R. , Jacques Julio C. S. , Braun Adriana 
Published: April 2007

AbstractIn this paper, we propose a new model to simulate the movement of virtual humans based on trajectories captured automatically from filmed video sequences. These trajectories are grouped into similar classes using an unsupervised clustering algorithm, and an extrapolated velocity field is generated for each class. A physically‐based simulator is then used to animate virtual humans, aiming to reproduce the trajectories fed to the algorithm and at the same time avoiding collisions with other agents. The proposed approach provides an automatic way to reproduce the motion of real people in a virtual environment, allowing the user to change the number of simulated agents while keeping the same goals observed in the filmed video. Copyright © 2007 John Wiley & Sons, Ltd.
Believable interaction with a quasi‐tangible tabletop interface
Authors: Lee Jangho , Lee Jun , Kim HyungSeok , Kim Jee‐In 
Published: April 2007

AbstractIn this paper, we present a believable interaction mechanism for manipulation multiple objects in ubiquitous/augmented virtual environment. A believable interaction in multimodal framework is defined as a persistent and consistent process according to contextual experiences and common‐senses on the feedbacks. We present a tabletop interface as a quasi‐tangible framework to provide believable processes. An enhanced tabletop interface is designed to support multimodal environment. As an exemplar task, we applied the concept to fast accessing and manipulating distant objects. A set of enhanced manipulation mechanisms is presented for remote manipulations including inertial widgets, transformable tabletop, and proxies. The proposed method is evaluated in both performance and user acceptability in comparison with previous approaches. The proposed technique uses intuitive hand gestures and provides higher level of believability. It can also support other types of accessing techniques such as browsing and manipulation. Copyright © 2007 John Wiley & Sons, Ltd.
Computer aided generation of stylized maps
Authors: Adabala Neeharika , Varma Manik , Toyama Kentaro 
Published: April 2007

AbstractGeographic maps have existed from early stages of human civilization. Various styles of visualizing the geographic information have evolved depending on the nature of information and the technology available for visualization. This has led to innumerable map styles. In this work we develop a technique to create maps by combining two‐dimensional and three‐dimensional information such that the resulting maps are both functional and aesthetically appealing. Our technique requires geographical information in vector form and aerial images as inputs. We use computer vision based approaches and user defined inputs to augment the vector data with information that is required to create stylized maps. We define procedural graphics methods to generate a range of geographic elements that can be composed together into a stylized map. We demonstrate our technique by generating example maps of a region in Las Vegas. Copyright © 2007 John Wiley & Sons, Ltd.
In vitro effects of 2‐methoxyestradiol on cell morphology and Cdc2 Kinase activity in SNO oesophageal carcinoma cells
Authors: Joubert Annie , Marais Sumari 
Published: April 2007

AbstractThe effects of 1 × 10−6 M exogenous 2‐methoxyestradiol (2 ME) were determined on cell morphology and cell division cycle (Cdc) 2 kinase activity in SNO oesophageal carcinoma cells. Mitotic indices revealed an increase in metaphase cells (11.2%) when compared to the 0.5% vehicle‐treated cells after 18 h of exposure to 2 ME. Vehicle‐treated control cells did not show any hallmarks of apoptosis after 18 h of exposure to dimethyl sulphoxide. Only 0.5% of 2 ME‐treated cells showed characteristics of apoptosis. Conversely, increased morphological hallmarks of apoptosis were observed in SNO‐treated cells after 21.5 h of 2 ME exposure. When compared to the 0.5% in vehicle‐treated cells, 4.7% of cells were in apoptosis. Furthermore, 34.1% of cells were blocked in metaphase after 21.5 h of 2 ME exposure compared to 0.6% of vehicle‐control cells. In addition, Cdc2 kinase activity was statistically significantly increased (1.3‐fold) (p < 0.005) in 2 ME‐treated cells when compared to vehicle‐treated controls. The present preliminary study suggests that the accumulation observed in metaphase cells and the increase in Cdc2 kinase activity caused by 2 ME are consistent with morphological hallmarks of mitotic arrest and disrupted mitotic spindle formation, thus leading to induction of apoptosis in SNO cells. Copyright © 2007 John Wiley & Sons, Ltd.
Retrograde recanalization of chronically occluded coronary arteries: Illustration and description of the technique
Authors: Kukreja Neville , Serruys Patrick W. , Sianos Georgios 
Published: April 2007

AbstractChronic total occlusions remain one of the last frontiers in interventional cardiology, with far lower procedural success rates compared with other lesion subsets. The benefits of successful treatment include improvements in angina and survival. One method, which may improve technical success rates, is the use of a retrograde approach. We report three cases employing a retrograde approach and describe the technique in detail. © 2007 Wiley‐Liss, Inc.
Beyond the Structure–Property Relationship Paradigm: Influence of the Crystal Structure and Microstructure on the Li+ Conductivity of La2/3LixTi1−xAlxO3 Oxides
Authors: García‐Martín Susana , Morata‐Orrantía Ainhoa , Alario‐Franco Miguel A. , Rodríguez‐Carvajal Juan , Amador Ulises 
Published: April 2007

AbstractThe crystal structures of several oxides of the La2/3LixTi1−xAlxO3 system have been studied by selected‐area electron diffraction, high‐resolution transmission electron microscopy, and powder neutron diffraction, and their lithium conductivity has been by complex impedance spectroscopy. The compounds have a perovskite‐related structure with a unit cell √2 ap×2 ap×√2 ap (ap=perovskite lattice parameter) due to the tilting of the (Ti/Al)O6 octahedra and the ordering of lanthanum and lithium ions and vacancies along the 2 ap axis. The Li+ ions present a distorted square‐planar coordination and are located in interstitial positions of the structure, which could explain the very high ionic conductivity of this type of material. The lithium conductivity depends on the oxide composition and its crystal microstructure, which varies with the thermal treatment of the sample. The microstructure of these titanates is complex due to formation of domains of ordering and other defects such as strains and compositional fluctuations.
Crystal Structure, Thermal and Compositional Deformations of β‐CsB5O8.
Authors: Bubnova R. , Dinnebier R. E. , Filatov S. , Anderson J. 
Published: April 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Single‐Crystal Growth and Characterization of Disilver(I) Monofluorophosphate(V), Ag2PO3F: Crystal Structure, Thermal Behavior, Vibrational Spectroscopy, and Solid‐State 19F, 31P, and 109Ag MAS NMR Spectroscopy.
Authors: Weil Matthias , Puchberger Michael , Fueglein Ekkehard , Baran Enrique J. , Vannahme Julia , Jakobsen Hans J. , Skibsted Joergen 
Published: April 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Cation—Cation Interactions and Antiferromagnetism in Na[Np(V)O2(OH)2]: Synthesis, Structure, and Magnetic Properties.
Authors: Almond Philip M. , Skanthakumar S. , Soderholm L. , Burns Peter C. 
Published: April 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Design and Synthesis of Novel C2‐Symmetric Chiral Piperazines and an Application to Asymmetric Acylation of σ‐Symmetric 1,2‐Diols.
Authors: Nakamura Daisuke , Kakiuchi Kiyomi , Koga Kenji , Shirai Ryuichi 
Published: April 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Rhodium‐Catalyzed Asymmetric Hydrosilylation of Ketones Using HETPHOX Ligands.
Authors: Coyne Anthony G. , Guiry Patrick J. 
Published: April 2007

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.