bluuebunny/crossref_metadata_2025_split huggingface dataset:
Primary optic nerve sheath meningioma
Authors: Jeremic Branislav , Pitz Susanne 
Published: June 2007

AbstractBACKGROUND.Radiotherapy (RT) has occasionally been practiced in the treatment of optic nerve sheath meningioma (ONSM). Recently, stereotactic fractionated RT (SFRT) has been introduced as a tool with better precision for RT delivery. A comprehensive review was undertaken to provide more insight into this matter.METHODS.A literature search was performed to identify reports dealing with both clinical aspects (diagnosis) and treatment in ONSM, focusing on RT in primary (p)ONSM. In particular, major emphasis was placed on the role of SFRT in pONSM.RESULTS.SFRT was capable of achieving excellent local tumor control, with improved/stable functional capacity in ≥80%, accompanied with very low toxicity in meticulously planned RT. This holds true for the majority of patients with progressive functional loss and probably the vast majority of those with some degree of functional loss at presentation. Those blind at presentation benefit from postoperative RT, whereas those with only minimal functional loss at presentation must be carefully selected for the best treatment, because a wait‐and‐see policy will inevitably lead to serious dysfunction or even blindness.CONCLUSIONS.SFRT should be considered the treatment of choice for the majority of patients with pONSM. Every effort should be made to further investigate the remaining questions in this disease, such as optimal timing for the patients with no or slight vision loss at presentation. Cancer 2007; 110:714–22. © 2007 American Cancer Society.
Effects of supervised exercise training on cardiopulmonary function and fatigue in breast cancer survivors during and after treatment
Authors: Schneider Carole M. , Hsieh City C. , Sprod Lisa K. , Carter Susan D. , Hayward Reid 
Published: June 2007

AbstractBACKGROUND.Cancer treatments have serious physiological and psychological side effects in cancer survivors. This investigation examined cardiopulmonary function and fatigue in breast cancer survivors during and after treatment by using similar exercise assessments, prescriptions, individualized interventions, and reassessments.METHODS.The study included 113 women diagnosed with breast cancer. Participants were grouped according to whether they participated in an individualized prescriptive exercise program during cancer treatment (DTm) or after cancer treatment (FTm). After a comprehensive screening and medical examination, cardiovascular endurance, pulmonary function, and fatigue were assessed, which led to the development of an individualized 6‐month exercise prescription and exercise intervention. Repeated‐measures analysis of variance (ANOVA) and analyses of covariance (ANCOVA) were used to compare the effectiveness of the intervention and differences between groups.RESULTS.Cardiopulmonary function (systolic blood pressure, time on treadmill) improved in the DTm group (P < .05), whereas the FTm group showed reductions in systolic and diastolic blood pressure and resting heart rate (P < .05) with concurrent increases in percentage of predicted FVC, % of predicted FEV1, predicted VO2max, and time on treadmill (P < .05). Psychologically, the DTm group showed reductions in behavioral, sensory, and total fatigue (P < .05), whereas the FTm group showed reductions in behavioral, affective, sensory, cognitive/mood, and total fatigue (P < .05).CONCLUSIONS.The current study suggested that moderate intensity, individualized, prescriptive exercise maintains or improves cardiovascular and pulmonary function with concomitant reductions in fatigue during and after cancer treatment. However, it is critical that exercise be individualized to specific needs of the cancer survivor to prevent exacerbation of cancer treatment toxicities. Cancer 2007; 110:918–25. © 2007 American Cancer Society.
Synthesis and crystallographic characterization of a chiral complex of (R)‐2‐(pyridin‐2‐ylmethylene)amino‐2′‐hydroxy‐1,1′‐binaphthyl(L) with hydrated nickel(II) acetate
Authors: Ji Baoming , Han Xiangming 
Published: June 2007

AbstractA chiral complex of (R)‐2‐((pyridin‐2‐ylmethylene)amino)‐2′‐hydroxy‐1,1′‐binaphthyl (L) with hydrated nickel (II) acetate has been synthesized and spectroscopically characterized. The crystal structure of [NiL2(CH3OH)(CH3COO)]CH3COO·CH3OH has been determined by single‐crystal X‐ray diffraction. The complex crystallizes in the orthorhombic space group P 2(1) 2(1) 2(1) with cell constants a = 15.1035 (19), b = 17.836 (2), c = 18.730 (2)Å, α = β = γ = 90.00°, Z = 4. The structure was solved by direct methods and refined to R = 0.0346 (wR2 = 0.0863). The analytical result of the crystal structure indicates that a pair of L ligands chelate to a Ni (II) atom in an asymmetric fashion with one Ni‐N bond being longer than the other, the Ni (II) atom is further coordinated by one methanol molecule and one acetate anion to form a distorted octahedral geometry. In the crystal of the complex, the coordination cation [NiL2(CH3OH)(CH3COO)]+, the uncoordinated methanol molecule and uncoordinated acetate anion are further assembled into one‐dimensional chain structure via intermolecular hydrogen bonds along the a‐axis. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Different complexation behavior of a proton transfer compound obtained from 1,10‐phenanthroline and pyridine‐2,6‐dicarboxylic acid with Sn(IV), Sb(III) and Tl(I)
Authors: Aghabozorg H. , Ramezanipour F. , Nakhjavan B. , Soleimannejad J. , Attar Gharamaleki J. , Sharif M. A. 
Published: June 2007

AbstractThe different complexation methods of a proton transfer compound, (phenH)2(pydc) (phen=1,10‐phenanthroline; pydcH2= pyridine‐2,6‐dicarboxylic acid), are discussed and formation of [Sn(pydc)(phen)(OH)2]·3H2O (1), {[Sb(pydc)(phen)]2O}·2DMSO·4H2O(2) and [(Tl(pydcH)]n (3) complexes are reported. The characterization was performed using IR spectroscopy and X‐ray diffraction. The structures of Sn(IV) and Sb(III) complexes show that both cationic and anionic fragments of the starting proton transfer compound have been involved in the complexation. Whereas the structure of Tl(I) complex demonstrates that only the anionic fragment of (phenH)2(pydc) is contributed to the complexation. The complexes 1‐3 show a variety of structural features including mononuclear, binuclear and polymeric structures. In compounds (1), (2) and (3) a large number of hydrogen bonds are observed. These interactions play an important role in the formation and stabilization of supramolecular systems in the crystal lattices. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Crystal structure and electrochemical properties of the supramolecular compound [Himi]6[As2Mo18O62]·11H2O
Authors: Yang Yanyan , Xu Lin , Jia Liping , Gao Guanggang , Li Fengyan , Qu Xiaoshu , Qiu Yunfeng 
Published: June 2007

AbstractA supramolecular compound, [Himi]6[As2Mo18O62]·11H2O (1) (imi = imidazole), has been synthesized and characterized by single crystal X‐ray analysis, IR spectra, thermal gravimetric analysis, electrochemical and elemental analysis. The crystals are monoclinic, P 2(1)/n, a = 14.9529(8) Å, b = 20.9521(11) Å, c = 25.2464(13) Å, β = 93.8130(10)°, V = 7892.1(7) Å3, Z = 4. X‐ray diffraction indicated that protonated imidazole cation and polyanion were linked together through electrostatic interactions and intermolecular forces (hydrogen bonding). (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Nanosized barium carbonate particles stabilized by cetyltrimethylammonium bromide at the water/hexamethylene interface
Authors: Chen Long , Shen Yuhua , Xie Anjian , Zhu Jinmiao , Wu Zhifu , Yang Liangbao 
Published: June 2007

AbstractNanoparticles of barium carbonate (BaCO3) have been synthesized in situ from barium chloride by the slow release of carbon dioxide by alkaline hydrolysis of diethyl carbonate, and stabilized by cetyltrimethylammonium bromide (CTAB) at the water/hexamethylene interface. Transmission electron microscopy, Fourier transform infrared spectroscopy and X‐ray powder diffractometry were used to characterize the products. The results indicate that spherical BaCO3 nanoparticles are obtained with poor crystallinity and diameters ranging from 30 to 300 nm. The possible formation mechanism of the nanoparticles at the interface is discussed. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Effect of phytoactive compounds on in vitro cholesterol crystal growth
Authors: Seethalakshmi Ammal M. , George K. V. , Jayakumari I. 
Published: June 2007

AbstractThe growth of cholesterol crystals in gel medium in the presence of some bioactive compounds like extract of cassia fistula Linn (CF) have shown changes in the rate of nucleation, morphology and numbers of crystals with respect to control and treatment. The study reveals that CF material can be used as a potent inhibitor of cholesterol crystals. These crystals were characterized by X‐ray and IR for structural determination. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Preparation of Y3Al5O12nanocrystals by low temperature glycol route
Authors: Kaithwas N. , Deshmukh M. , Kar S. , Dave M. , Lalla N. P. , Ryu H. , Bartwal K. S. 
Published: June 2007

AbstractYttrium aluminum garnet, Y3Al5O12(YAG) nanocrystals were synthesized by low temperature glycol method. This is a modified sol–gel method performed at low temperature that consists of a mixture of salts, mostly nitrates in an aqueous media. Single phase nanocrystalline YAG was obtained at 850°C, which is much lower than others such as wet‐chemical techniques. The structural characterization is done by XRD and transmission electron microscopy. The crystallite size range from 20‐50 nm was observed for the materials prepared at 850‐ 950°C. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
The influence of annealing atmosphere on the optical properties of flower‐like ZnO
Authors: Hou Ying , Yang Ming , Pang Guangsheng , Feng Shouhua 
Published: June 2007

AbstractThe influence of annealing atmosphere on the optical properties of flower‐like ZnO is investigated. The flower‐like ZnO is composed of nanosheets. Annealing at 500°C results in the increase of the thickness of nanosheets and the enhancement of UV emission. PL spectra results show that the annealing atmosphere affects the visible emission band, which is sensitive to intrinsic and surface defects in the flower‐like ZnO. The vibrational properties of the flower‐like ZnO annealing in different atmospheres are characterized by Raman spectra. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Anwendung des Grenzlastnachweises für Kellerwände nach dem neuen Sicherheitskonzept gemäß DIN 1053‐100
Authors: Jäger Wolfram 
Published: June 2007

AbstractDer bisher übliche Grenzlastnachweis für Kellerwände nach DIN 1053‐1:1996‐11, bei dessen Einhaltung eine genauere Berechnung entfallen kann, ist mit DIN 1053‐100 auf das neue Sicherheitskonzept umgestellt worden. Der Beitrag erläutert die Voraussetzungen für die Anwendung der Formeln nach Abschnitt 10 von DIN 1053‐100:2006‐08 und stellt die Verbindung zu den Beiträgen in diesem Heft von Broms, Hoffmann und Schöps sowie zu Mann und Bernhardt her. Auf den immer wieder diskutierten Erddruckansatz wird eingegangen. Es folgt die Erläuterung der Nachweisführung allgemein und anhand eines Beispiels. Weiter werden Hinweise gegeben, wie vorzugehen ist, wenn die Grenzlasten nicht eingehalten werden können.
Berechnung des Erddruckes auf Kellerwände
Authors: Broms Bengt 
Published: June 2007

AbstractDem Beitrag liegen die Untersuchungen aus den 60er und 70er Jahren zu Grunde, die schließlich zur Bestätigung des generellen Ansatzes des aktiven Erddrucks geführt haben. Schon damals wurde heftig diskutiert, ob der aktive, ein erhöhter aktiver oder der Erdruhedruck auf gemauerte Kellerwände anzusetzen sei. Der Einfluss der Verdichtung wurde eingehend untersucht. Die Arbeiten des Autors haben damals wesentlich zur Klärung der Problematik beigetragen, die schließlich zum anerkannten Stand der Technik wurde, weshalb eine Übersetzung ins Deutsche sinnvoll erschien.Der auf eine Kellerwand beim Verdichten oder durch eine äußere Last entstehende Erddruck kann beträchtlich größer sein, als der Wert, für den die Wand normalerweise dimensioniert ist. Auf diese Weise sind nach dem Wiederauffüllen und Verdichten der Baugrube mit Maschinen in den 60er und 70er Jahren bei Einfamilienhäusern beträchtliche Schäden entstanden.Es wird der Zusammenhang zwischen Erddruck und Verformungen der Stützkonstruktion erläutert, dem allgemeine Dimensionierungsprinzipien folgen. Darüber hinaus werden Modelle zur Berechnung des Erddrucks infolge Eigengewichts und infolge äußerer Lasten auf nachgiebige bzw. nicht nachgiebige Kellerwände angegeben.
Tragreserven bei Kellerwänden – Vergleich zwischen Norm und genauerer Berechnung mittels FEM
Authors: Hoffmann Jens , Schöps Peter 
Published: June 2007

AbstractDer Nachweis erddruckbelasteter Wände erfolgt in der Regel nach den vereinfachten normativ geregelten Bemessungsverfahren. Der hierbei in Ansatz gebrachte zweiaxiale Lastabtrag wird anhand einiger numerischer Beispielrechnungen untersucht. Die erhaltenen analytischen und numerischen Traglasten werden miteinander verglichen und Tragreserven lokalisiert. Weitere Reserven ergeben sich bei der Anwendung von eingefasstem Mauerwerk als Kellerwand. Hierbei wird die günstige Wirkungsweise eines bislang vernachlässigten Mechanismus – der Verformungsbehinderung – anschaulich dargestellt.
Unusual Influence of the Structures of Transition Metal Complexes on Catalytic C–S and C–Se Bond Formation Under Homogeneous and Heterogeneous Conditions
Authors: Beletskaya Irina P. , Ananikov Valentine P. 
Published: June 2007

AbstractIn the presence of transition metal catalysts, hydrothiolation and hydroselenation reactions, as well as bisthiolation and bisselenation reactions, have been successfully carried out with high selectivities and yields. New transition metal‐catalyzed synthetic methods have been developed for the preparation of vinyl sulfides and vinyl selenides of various types. Mechanistic study has revealed that a homogeneous catalytic system based on phosphine complexes of palladium is the best choice for carrying out stereoselective additions of disulfides and diselenides to alkynes. A heterogeneous Ni‐catalyzed reaction with a unique self‐organized nanostructured catalyst was superior for carrying out regioselective additions of thiols and selenols to alkynes.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
Fitting concentration and load rating curves with generalized linear models
Authors: Cox Nicholas J. , Warburton Jeff , Armstrong Alona , Holliday Victoria J. 
Published: June 2007

AbstractGeneralized linear models may be used as a systematic and flexible alternative to existing practices in fitting sediment or solute concentration and load rating curves. Through widely available statistical software they offer a one‐step solution to the common and awkward problem that a bias correction is needed when estimating total loads. In particular, using a logarithmic link function has an advantage over logarithmic transformation of concentration or load, as generalized linear models return predictions directly on the original measured scale; there is thus no need for back‐transformation or subsequent correction factors. Example analyses are given for suspended sediment concentration for an upland stream in the Northern Pennines and for phosphorus load for the Illinois River. General criteria for choosing models and good practice in the use of figures of model merit and of residual plots are also discussed in detail. Copyright © 2007 John Wiley & Sons, Ltd.
Segregated ice structures in various heaved permafrost landforms through CT Scan
Authors: Calmels Fabrice , Allard Michel 
Published: June 2007

AbstractThe growth of segregated ice lenses in frost susceptible sediments in the discontinuous permafrost zone is the dominant mechanism for the formation of permafrost mounds, such as palsas, lithalsas and permafrost plateaus. Thawing of these mounds creates thermokarst lakes, which are particularly abundant in Nunavik, east of the Hudson Bay area. The inception of the permafrost in mounds and their growth are regulated by climate conditions, by local Quaternary geology and by environmental factors such as topography, vegetation, snow cover and surface humidity. Variable sizes and morphology of the permafrost mounds can be attributed to local factors that affect the ice segregation process, particularly the supply of water needed for ice‐lens growth and grain‐size composition of the soil into which aggradation takes place. Computer image analysis of CT scans on high quality cores obtained from permafrost mounds and plateaus of various shapes reveal that the ice layer sequences and permafrost internal structure vary with landform types. A relationship therefore exists between different morphological type within a family of landforms and their microscale internal structure. Copyright © 2007 John Wiley & Sons, Ltd.
Economic analysis of rosemary, fennel and anise essential oils obtained by supercritical fluid extraction
Authors: Pereira Camila G. , Meireles M. Angela A. 
Published: June 2007

AbstractIn the present work, economic analysis of the production of extracts and essential oils of rosemary (Rosmarinus officinalis), fennel (Foeniculum vulgare) and anise (Pimpinella anisum) by supercritical fluid extraction and steam distillation are discussed. The manufacturing cost (COM) was determined considering that the COM can be obtained in terms of the costs of investment, operational labour, raw materials, waste treatment and utilities. The manufacturing cost was also estimated considering that the essential oil content in SFE extracts varies (50–100%). The analysis showed that the supercritical fluid extraction is economically viable to obtain these vegetable extracts and essential oils. The higher costs of essential oils obtained by steam distillation were mainly caused by the lower yield and the higher energy consumption of this process. Copyright © 2007 John Wiley & Sons, Ltd.
Supercritical carbon dioxide extraction of volatiles from Satureja fruticosa Béguinot
Authors: Coelho J. A. , Grosso C. , Pereira A. P. , Burillo J. , Urieta J. S. , Figueiredo A. C. , Barroso J. G. , Mendes R. L. , Palavra A. M. F. 
Published: June 2007

AbstractDried flowers and leaves of Satureja fruticosa Béguinot were submitted to supercritical CO2 extraction (SFE), followed by a two‐stage fractional separation. The extraction was carried out at 40 °C in a flow apparatus, provided with a 1 l extraction vessel and two separators of 0.27 l each. Conditions of extraction, such as pressure, particle size of plant material and CO2 flow rate, were studied in order to assess their influence on the yield and composition of the volatiles. The best conditions of extraction were 90 bar pressure at 1.32 kg/h CO2 flow rate and a plant material particle size of 0.5 mm. The SFE volatiles obtained and the essential oil isolated by hydrodistillation (HD) were analysed and compared by GC and GC–MS. The oxygen‐containing monoterpenes, pulegone (33–36% for SFE and 40–41% for HD), isomenthone (14–18% for SFE and 21% for HD), piperitenone (11–12% for SFE and 9–11% for HD) and piperitenone oxide (11–13% for SFE and 7–9% for HD) were the dominant components in all samples. Copyright © 2007 John Wiley & Sons, Ltd.
Glia‐induced neuronal differentiation by transcriptional regulation
Authors: Göritz Christian , Thiebaut Renaud , Tessier Luc‐Henri , Nieweg Katja , Moehle Christoph , Buard Isabelle , Dupont Jean‐Luc , Schurgers Leon J. , Schmitz Gerd , Pfrieger Frank W. 
Published: June 2007

AbstractThere is increasing evidence that different phases of brain development depend on neuron–glia interactions including postnatal key events like synaptogenesis. To address how glial cells influence synapse development, we analyzed whether and how glia‐derived factors affect gene expression in primary cultures of immunoisolated rat retinal ganglion cells (RGCs) by oligonucleotide microarrays. Our results show that the transcript pattern matched the developmental stage and characteristic properties of RGCs in vitro. Glia‐conditioned medium (GCM) and cholesterol up‐ and downregulated a limited number of genes that influence the development of dendrites and synapses and regulate cholesterol and fatty acid metabolism. The oligonucleotide microarrays detected the transcriptional regulation of neuronal cholesterol homeostasis in response to GCM and cholesterol treatment. Surprisingly, our study revealed neuronal expression and glial regulation of matrix gla protein (Mgp). Together, our results suggest that glial cells promote different aspects of neuronal differentiation by regulating transcription of distinct classes of genes. © 2007 Wiley‐Liss, Inc.
Executive function in schizophrenia: what impact do antipsychotics have?
Authors: O'Grada Cara , Dinan Timothy 
Published: June 2007

AbstractCognitive dysfunction is a major component of schizophrenia, with deficits in executive function particularly pertinent to successful daily living and outcome. Executive deficits and negative/disorganised symptoms remain relatively resistant to amelioration by antipsychotic medication in comparison to positive symptoms. While there is a relative paucity of data on the effects of antipsychotics on specific executive deficits, atypical antipsychotics would appear to be more beneficial than typical antipsychotics at improving these functions, with muscarinic, glutamatergic and cholinergic systems variously implicated. Recent research focusing on the relationships between specific symptoms and specific executive deficits holds important implications for future psychopharmacological interventions in the area by elucidating the neural substrates and pathways which underpin schizophrenic symptomatology. This review attempts to evaluate the research thus far for the specific executive components of spatial working memory (SWM), inhibition, sustained attention and set shifting. Issues significant to future psychopharmacology in the area are discussed, with particular emphasis on the need for a greater consensus in methodology and definition executive function research in schizophrenia. Copyright © 2007 John Wiley & Sons, Ltd.
Dietary risk factors for nasopharyngeal carcinoma in Maghrebian countries
Authors: Feng Bing‐Jian , Jalbout Majida , Ayoub Wided Ben , Khyatti Meriem , Dahmoul Sami , Ayad Messaoud , Maachi Fatima , Bedadra Wided , Abdoun Meriem , Mesli Sarah , Hamdi‐Cherif Mokhtar , Boualga Kada , Bouaouina Noureddine , Chouchane Lotfi , Benider Abdellatif , Ben Ayed Farhat , Goldgar David , Corbex Marilys 
Published: June 2007

AbstractNorth Africa is one of the major Nasopharyngeal Carcinoma (NPC) endemic regions. Specific food items unique to this area were implicated to be associated with NPC risk, but results were inconsistent. Here we have performed a large‐scale case‐control study in the Maghrebian population from Tunisia, Algeria and Morocco. From 2002 to 2005, interviews were conducted on 636 cases and 615 controls. Controls were hospitalized individuals from 15 non‐cancer hospital departments, or friends and family members of non‐NPC cancer subjects, matched by center, childhood household type (rural or urban), age and sex. Conditional logistic regression is used to evaluate the risk of factors. In results, consumption of rancid butter, rancid sheep fat and preserved meat not spicy (mainly quaddid) were associated with significantly increased risk of NPC, while consumption of cooked vegetables and industrial preserved fish was associated with reduced risk. Other foods such as fresh citrus fruits and spicy preserved meat (mainly osban) in childhood, industrial made olive condiments in adulthood, were marginally associated. In multivariate analyses, only rancid butter, rancid sheep fat and cooked vegetables were significantly associated with NPC. In regard to possible causative substances, our results implicate the involvement of butyric acid, a potential Epstein‐Barr virus (EBV) activator. © 2007 Wiley‐Liss, Inc.