bluuebunny/crossref_metadata_2025_split huggingface dataset:
Barriers to rehabilitation of colorectal cancer patients
Authors: Rodriguez‐Bigas Miguel A. , Chang George J. , Skibber John M. 
Published: March 2007

AbstractBackgroundColorectal cancer is one of the most common cancers in the United States. Since 1993 there has been a decrease in colorectal cancer mortality. Thus, there are more cancer survivors. In this manuscript potential barriers encountered during the rehabilitation of the colorectal cancer patient will be discussed.MethodsA literature review of manuscripts dealing with the rehabilitation and quality of life of the colorectal cancer patient was performed with specific emphasis on barriers for rehabilitation.ResultsThere is not much literature regarding barriers to the rehabilitation of the colorectal cancer patient. The rehabilitation of the colorectal cancer patient is a complex continuum. In order to maximize the potential for rehabilitation a team approach where the patient, family, friends and health care providers participate actively should be undertaken. The most common barriers are in the domains of knowledge, patient, health care system, and therapy. The impact of these barriers will vary from patient to patient.ConclusionsThere is a paucity of literature regarding barriers to the rehabilitation of the colorectal cancer patient. Prospective databases as well as prospective longitudinal studies need to be established so that the barriers that colorectal cancer patients encounter during their rehabilitation are more clearly identified and understood. J. Surg. Oncol. 95:400–408. © 2007 Wiley‐Liss, Inc.
Barriers to rehabilitation of the neurosurgical spine cancer patient
Authors: Stubblefield Michael D. , Bilsky Mark H. 
Published: March 2007

AbstractThe treatment of metastatic spine tumors has evolved significantly over the past 20 years due largely to improvements in magnetic resonance imaging; decompressive surgical techniques, spinal instrumentation, and high‐dose conformal radiation. These advances have improved our ability to provide meaningful palliation for patients who often have significant medical and cancer‐related issues. Despite technical advances that have improved our ability to maintain neurologic function, stabilize the spine, and prevent local tumor recurrences, significant barriers to rehabilitation remain. This article reviews these primary barriers to rehabilitation of the cancer patient following spine surgery and emphasizes the importance of diagnostic accuracy and a comprehensive team approach to the treatment of pain and other disorders in this population. J. Surg. Oncol. 95:419–426. © 2007 Wiley‐Liss, Inc.
The effects of childhood trauma on daily mood lability and comorbid psychopathology in bulimia nervosa
Authors: Wonderlich Stephen A. , Rosenfeldt Steven , Crosby Ross D. , Mitchell James E. , Engel Scott G. , Smyth Joshua , Miltenberger Raymond 
Published: March 2007

AbstractA study of bulimic women examined the relationship between histories of childhood trauma and psychiatric disorders, as well as daily measures of mood and behavior. One hundred twenty‐three women with bulimia nervosa were assessed with interviews and completed an Ecological Momentary Assessment (EMA) protocol in which they carried a palmtop computer for 2 weeks. Sexual abuse was associated with a history of mood and anxiety disorders, and emotional abuse with eating disorder psychopathology. In the EMA assessment, sexual abuse was associated with daily purging frequency and self‐destructive behavior. Emotional abuse was associated with average daily mood and mood lability. These findings support the idea that child maltreatment may be associated with various aspects of bulimia‐related psychopathology.
Risk and resilience factors for posttraumatic stress symptomatology in Gulf War I veterans
Authors: Vogt Dawne S. , Tanner Lynlee R. 
Published: March 2007

AbstractWhat factors distinguish war‐exposed veterans who experience posttraumatic stress symptomatology (PTSS) from those who do not? This study used structural equation modeling procedures to examine the complex interplay among predeployment, war‐zone, and postdeployment factors as they relate to PTSS in a sample of Gulf War I veterans. A primary goal was to determine to what extent previously documented associations among Vietnam veterans would replicate in this more contemporary veteran cohort. Results supported a multivariate etiological perspective on PTSS, with war‐zone factors accounting for the largest proportion of variance in PTSS. The majority of hypothesized associations held, suggesting that the mechanisms underlying PTSS may be similar across veteran cohorts.
Conduct disorder, war zone stress, and war‐related posttraumatic stress disorder symptoms in American Indian Vietnam veterans
Authors: Dillard Denise , Jacobsen Clemma , Ramsey Scott , Manson Spero 
Published: March 2007

AbstractThis study examined whether conduct disorder (CD) was associated with war zone stress and war‐related post‐traumatic stress disorder (PTSD) symptoms in American Indian (AI) Vietnam veterans. Cross‐sectional lay‐interview data was analyzed for 591 male participants from the American Indian Vietnam Veterans Project. Logistic regression evaluated the association of CD with odds of high war zone stress and linear regression evaluated the association of CD and PTSD symptom severity. Childhood CD was not associated with increased odds of high war zone stress. Conduct disorder was associated with elevated war‐related PTSD symptoms among male AI Vietnam Veterans independent of war zone stress level and other mediators. Future efforts should examine reasons for this association and if the association exists in other AI populations.
Kinetics study of propyl acetate synthesis reaction catalyzed by Amberlyst 15
Authors: Huang Yuan‐Sheng , Sundmacher Kai 
Published: March 2007

AbstractThe reaction kinetics of esterification of acetic acid with n‐propanol was investigated. The reaction was catalyzed by the commercial cation‐exchange resin Amberlyst 15, and the kinetic data were obtained in a batch reactor within the temperature range 338–368 K. The chemical equilibrium constant, Keq, was first determined experimentally; the result shows that Keq is about 20 and slightly temperature dependent. Altogether 14 sets of kinetic data were then measured. The influences of operating parameters such as temperatures, initial molar ratios, and catalyst concentrations were checked. The pseudo‐homogeneous (PH), Rideal–Eley (RE), and Langmuir–Hinshelwood–Hougen–Watson (LHHW) kinetic models were developed to interpret the obtained kinetic data. The parameters of the kinetic models were identified by the software DIVA, and the confidence interval of each parameter was also estimated. Both the chemical equilibrium constant and kinetic models were formulated in terms of the liquid phase activity, which was described by the nonrandom two‐liquid (NRTL) model. The LHHW model gives the best fitting result, followed by the RE model and the PH model, whereas the confidence intervals rank in the reverse order. In addition, an effective solution was proposed to overcome a convergence problem occurring in the LHHW model parameter identification, which has been reported several times in the literature. © 2007 Wiley Periodicals, Inc. Int J Chem Kinet 39: 245–253, 2007
Rate constants for aqueous‐phase reactions of SO4− with C2F5C(O)O− and C3F7C(O)O− at 298 K
Authors: Kutsuna Shuzo , Hori Hisao 
Published: March 2007

AbstractPerfluorocarboxylic acids and their anions (PFCAs), such as perfluorooctanate (C7F15C(O)O−), have been generally recognized to be global pollutants and are believed to persist in the environment. Kinetic data for reactions of sulfate anion radicals (SO4−) with PFCAs are needed to evaluate the residence times of PFCAs in the environment, but no kinetic data have been reported, except for the rate constant for the reaction of SO4− with trifluoroacetate (CF3C(O)O−) (k1). In this study, using the fact that PFCAs react with SO4− to form shorter chain PFCAs, we determined rates relative to k1 of the reactions of photolytically generated SO4− with two short‐chain PFCAs, pentafluoropropionate (C2F5C(O)O−; k2) and heptafluorobutyrate (C3F7C(O)O−; k3), along with conversion ratios for conversion of C2F5C(O)O− into CF3C(O)O− (α) and conversion of C3F7C(O)O− into C2F5C(O)O− (β) and CF3C(O)O− (γ) at 298 K. Values of k1, k2, or k3 might change over the course of reaction with increasing ionic strength. Nevertheless, if the values of k1/k2, k2/k3, α, β, and γ remain almost constant during the reaction, a simple equation involving relative rates, such as k1/k2, can be used to relate the concentrations of C3F7C(O)O−, C2F5C(O)O−, and CF3C(O)O−. We compared the relative rates, such as k1/k2, and the conversion ratios determined from various experimental runs with different initial conditions to check whether relative rates and conversion ratios remained almost constant during each experimental run. The values of k1/k2, k2/k3, α, β, and γ seemed to remain almost constant, which facilitated determination of k2/k1 = 0.89 ± 0.07, k3/k1 = 0.84 ± 0.08, α = 0.88 ± 0.05, β = 0.75 ± 0.05, and γ = 0.17 ± 0.02. © 2007 Wiley Periodicals, Inc. Int J Chem Kinet 39: 276–288, 2007
Assessment and demarcation of trail degradation in a nature reserve, using GIS: case of Bukit Timah Nature Reserve
Authors: Chatterjea K. 
Published: March 2007

AbstractWith a significant rise in popularity of nature areas, particularly in urban settings like Singapore, Nature Reserves are being increasingly opened for public recreational use. In the Bukit Timah Nature Reserve (BTNR), the only remnant primary rain forest reserve in Singapore, trail networks are being expanded to meet this growing public demand. The physical condition of the present trail networks was assessed by monitoring the changes in surface compaction, soil moisture, infiltration rates, soil organic matter content, root density, litter cover and rill development. These parameters were compared with similar data obtained from undisturbed forested slopes to analyse the degree of changes brought about by trail usage. Significant changes occurred in all measured parameters, indicating observable degradation of the trails, particularly on vulnerable slopes. These changes are due to the heavy and increased use of the forest by visitors. Penetration resistance and shear strength of the top surface layers of the trails are important indicators of trail degradation status and these have been plotted, using GIS, to demarcate trails under different levels of stress. This field monitoring provides a relevant local assessment of trail conditions. It has potential for use in decision‐making in future planning and forest management under similar site conditions. Copyright © 2007 John Wiley & Sons, Ltd.
Correlation of photodynamic activity and fluorescence signaling for free and pegylated mTHPC in mesothelioma xenografts
Authors: Tran Nam , Krueger Thorsten , Pan Youmin , Yan Hua , Cheng Cai , Altermatt Hans‐Jörg , Ballini Jean‐Pierre , Borle François , Ris Hans‐Beat , Andrejevic‐Blant Snezana 
Published: March 2007

AbstractBackground/ObjectivesCorrelation of photodynamic activity (PDT) and fluorescence signaling for free and pegylated meta‐tetrahydroxyphenylchlorin (mTHPC) in nude mice with mesothelioma xenografts.Study Design/Materials and MethodsTwelve animals received light delivery (20 J/cm2, 150 mW/cm2, spot size 1.2 cm) on the tumor and the hind leg 3 days after sensitization with 0.15 mg/kg free mTHPC (n = 6) or equimolar‐dosed pegylated mTHPC (n = 6). Groups of three animals each were sensitized with 0.15 and 0.5 mg/kg free mTHPC or equimolar dosed pegylated mTHPC followed after 3 days by fluorescence microscopy measurements.ResultsPegylated mTHPC resulted in a similar extent of PDT‐related tumor necrosis but in lower skin phototoxicity than free mTHPC. Both mTHPC formulations were heterogeneously distributed in the tumor and were mainly localized in perivascular areas. Pegylated mTHPC revealed a higher tumor to skin fluorescence intensity ratio than free mTHPC (P<0.001).ConclusionsFluorescence signaling measurement has the potential to predict the photodynamic activity for both mTHPC formulations in mesothelioma xenografts. Lasers Surg. Med. 39:237–244, 2007. © 2007 Wiley‐Liss, Inc.
PET evidence of central GABAergic changes in stiff‐person syndrome
Authors: Perani Daniela , Garibotto Valentina , Panzacchi Andrea , Moresco Rosa Maria , Ortelli Paola , Corbo Massimo , Fazio Ferruccio , Folli Franco 
Published: March 2007

AbstractWe measured expression of central nervous system GABA‐A receptors with 11C‐flumazenil (11C‐FMZ) and PET in two subjects with stiff person syndrome (SPS). We found reduced 11C‐FMZ binding potential (BP) in motor‐premotor cortex, and increased 11C‐FMZ BP in the cerebellar nuclei. This is the first in vivo PET evidence of central GABA‐A receptors dysfunction in SPS, possibly concurring to the motor symptoms. © 2007 Movement Disorder Society
UbiXML: programmable management of ubiquitous computing resources
Authors: Alexopoulos Dimitris , Soldatos John , Kormentzas George , Skianis Charalabos 
Published: March 2007

AbstractXML technologies provide proven benefits for the configuration management of complex heterogeneous multi‐vendor networks. These benefits have been recently manifested in numerous research, industrial and standardization efforts, including the XMLNET architecture. In this paper we present UbiXML, a system for programmable management of ubiquitous computing resources. UbiXML extends the benefits of XML technologies in the broader class of ubiquitous computing environments, which are inherently complex distributed heterogeneous and multi‐vendor. In UbiXML management applications are structured as XML documents that incorporate programming constructs. Thus, UbiXML allows administrators to build sophisticated management applications with little or no programming effort. While UbiXML builds on several XMLNET concepts, it significantly augments XMLNET to handle management of sensors, perceptual components and actuating devices. Moreover, UbiXML is extensible towards additional ubiquitous computing elements. UbiXML has been exploited in implementing realistic management applications for a smart space. Copyright © 2007 John Wiley & Sons, Ltd.
A branch & cut algorithm for the windy general routing problem and special cases
Authors: Corberán Angel , Plana Isaac , Sanchis José M. 
Published: March 2007

AbstractIn this paper, we present an exact algorithm for the Windy General Routing Problem. This problem generalizes many important Arc Routing Problems and also has some interesting real‐life applications. The Branch & Cut method presented here is based on a cutting‐plane algorithm that identifies violated inequalities of several classes of facet‐inducing inequalities for the corresponding polyhedron. The whole procedure has been tested over different sets of instances and is capable of solving to optimality large‐size instances of several routing problems defined on undirected, mixed, and windy graphs. © 2007 Wiley Periodicals, Inc. NETWORKS, Vol. 49(4), 245–257 2007
A Power–Arnoldi algorithm for computing PageRank
Authors: Wu Gang , Wei Yimin 
Published: March 2007

AbstractThe PageRank algorithm plays an important role in modern search engine technology. It involves using the classical power method to compute the principle eigenvector of the Google matrix representing the web link graph. However, when the largest eigenvalue is not well separated from the second one, the power method may perform poorly. This happens when the damping factor is sufficiently close to 1. Therefore, it is worth developing new techniques that are more sophisticated than the power method. The approach presented here, called Power–Arnoldi, is based on a periodic combination of the power method with the thick restarted Arnoldi algorithm. The justification for this new approach is presented. Numerical tests illustrate the efficiency and convergence behaviour of the new algorithm. Copyright © 2007 John Wiley & Sons, Ltd.
Alkaloids of zanthoxylum budrunga wall.: NMR assignments of dihydrochelerythrine, (±)‐evodiamine and zanthobungeanine
Authors: Joshi Balawant S. , Moore Kristi M. , Pelletier S. William , Puar Mohindar S. 
Published: March 2007

AbstractThe root bark of Zanthoxylum budrunga has been found to contain dihydrochelerythrine, N‐norchelerythrine, (±)‐evodiamine, zanthobungeanine and lupeol. NMR spectral studies (1H, 13C, 1H homonuclear COSY, HETCOR, DIFNOE and selective INEPT) carried out on these alkaloids have enabled the accurate chemical shift assignments for dihydrochelerythrine, (±)‐evodiamine and zanthobungeanine to be established.
A new method for alkaloid extraction from Chelidonium majus L.
Authors: Bugatti C. , Colombo M. L. , Tomé F. 
Published: March 2007

AbstractThe increasing interest in Chelidonium majus L. and its various metabolites (i.e., the isoquinoline alkaloids, sanguinarine, chelerythrine, chelidonine and berberine) has given rise to a need for a rapid and reproducible method for the standardization and evaluation of fresh C. majus extracts. Both quaternary and tertiary alkaloids can be isolated from vegetable material by means of ion pair extraction and the recovery of these compounds was found to be consistently greater than 90%.
High performance liquid chromatographic determination of alkaloids from Vinca minor L.
Authors: Proksa B. , Grossmann E. 
Published: March 2007

AbstractFourteen alkaloids from Vinca minor L. were separated and their concentration determined by high performance liquid chromatography using Separon SGX C18 with a mobile phase of methanol:water (0.02 mol/L NH4Cl, pH 8.2 adjusted with Et3N). The major alkaloids of the leaves were vincamine (0.13%), 1,2‐dehydroaspidospermidine (0.06%) and vincaminoreine (0.028%). The dominant alkaloid of the root was 1,2‐dehydroaspidospermidine (0.28%). The bisindole alkaloid vincarubine was found only in the leaves (0.007%).
Laboratory selection of Artemisia annua L. for high artemisinin yielding types
Authors: Pras Niesko , Visser Jan F. , Batterman Sieb , Woerdenbag Herman J. , Malingré Theo M. , Lugt Charles B. 
Published: March 2007

AbstractArtemisia annua L. (Asteraceae) contains artemisinin, a sesquiterpene lactone with promising antimalarial properties. At present the artemisinin content in plants grown in the open in the Netherlands is too low for industrial purposes. We describe a new method for laboratory selection to identify high yielding individual plants for the purpose of seed production and subsequent efficient cropping. During the procedure thin layer chromatography and high performance liquid chromatography were used as methods of analysis for artemisinin. Selected 11‐week‐old plantlets were transferred from the laboratory into the open in the summer of 1989. We have observed that plants which are high yielding in the laboratory continue to be so in the field. The A. annua crop which had been sown‐out directly had on average a 3–4‐fold lower artemisinin content.
Synthesis of uridinediphospho‐[U‐14C]‐D‐galacturonic acid by enzyme particulate fractions and purification via high performance liquid chromatography
Authors: Mitcham Elizabeth J. , Gross Kenneth C. , Wasserman Bruce P. 
Published: March 2007

AbstractUridinediphospho‐[U‐14C]‐D‐galacturonic acid (UDP‐[U‐14C]‐galacturonic acid) can be produced using UDP‐D‐glucuronic acid‐4′‐epimerase in radish root or mung bean hypocotyl enzyme particulate fractions. Epimerase activity was stable for several months at –70°C. Mung bean extracts had the highest activity per ng of protein. Enzymatic modification of UDP‐[U‐14C]‐galacturonic acid and formation of 14C‐breakdown products was reduced by short incubation times (<5 min). Using high performance liquid chromatography on an aminopropyl column, UDP‐[U‐14C]‐galacturonic acid can be separated and collected without contamination by other products for use as a radiolabelled substrate for assay of galacturonan synthase with a yield of 14%.
An homogeneous radioimmunoassay for abscisic acid using a scintillation proximity assay technique
Authors: Whitford P. N. , Croker S. J. 
Published: March 2007

AbstractAn homogeneous radioimmunoassay (RIA) for the plant growth regulator abscisic acid (ABA) has been developed by modifying an established heterogeneous assay. The introduction of a scintillation proximity reagent has enabled the production of a one‐step RIA in which radioactivity associated with antibody‐bound ABA can be counted in the presence of the unbound radiolabelled ABA and without the addition of a liquid scintillation cocktail. The assay has been validated by comparing the results with those obtained by combined gas chromatography/mass spectrometry and the precision of each method determined. The homogeneous RIA has a working range of 0.165–13.2 ng ABA and has been used to determine ABA concentration in extracts of leaves of tomato, Lycopersicon esculentum Mill. cv. Ailsa Craig (wild type) and three wilty mutants, notabilis, flacca and sitiens.
The isolation of eleutherococcus senticosus constituents by centrifugal partition chromatography and their quantitative determination by high performance liquid chromatography
Authors: Slacanin Ivan , Marston Andrew , Hostettmann Kurt , Guédon Didier , Abbe Philippe 
Published: March 2007

AbstractAn investigation of Eleutherococcus senticosus roots, using centrifugal partition chromatography as a key intermediate separation step, has led to the straightforward isolation of eight constituents. Four of these, sinapaldehyde glucoside, coniferaldehyde glucoside, coniferin and 1,5‐di‐O‐caffeoylquinic acid, have been described for the first time in this plant. The quantitative analysis of different E. senticosus samples has been performed by high performance liquid chromatography using eleutherosides B and E as external standards.
Flow cytometric analysis of nuclear DNA content in higher plants
Authors: Doležel J. 
Published: March 2007

AbstractMethods of flow cytometric analysis of nuclear DNA content were originally developed for human cells. They are based on the use of DNA‐specific fluorochromes and on the analysis of the relative fluorescence intensity of stained nuclei. During the last decade this methodology has been adapted to the analysis of plant cells. This article reviews the current status of this rapidly developing field. Special attention is given to preparative techniques, methods of instrument calibration and standardization, and interpretation of data. Multiparameter methods which supplement DNA content analysis are also reviewed.
Chiral compounds of essential oils. VIII: Stereodifferentiation of linalool using multidimensional gas chromatography
Authors: Schubert V. , Mosandl A. 
Published: March 2007

AbstractThis paper reports on the chiral evaluation of linalool as an additional criterion of authenticity of lavender oils, using enantioselective multidimensional gas chromatography with a column combination of Superox and heptakis(2,3,6‐tri‐O‐ethyl)‐β‐cyclodextrin in OV‐1701‐vi. This method is extended to some other valuable spice oils‐investigations on the enantiomeric distribution of their linalool content are discussed in terms of quality control of essential oil.
Chirospecific analysis of 2‐alkyl‐branched alcohols, acids, and esters: Chirality evaluation of 2‐methylbutanoates from apples and pineapples
Authors: Rettinger Klaus , Karl Volker , Schmarr Hans‐Georg , Dettmar Frank , Hener Uwe , Mosandl Armin 
Published: March 2007

AbstractUsing perethylated β‐cyclodextrin as a chiral stationary phase the alcohols 2‐methyl‐1‐butanol (1), ‐pentanol (2), ‐hexanol (3) and 2‐ethyl‐1‐hexanol (4), the free carboxylic acids 2‐methyl‐butanoic (5), ‐pentanoic (6), ‐hexanoic (7) and 2‐ethylhexanoic (8) as well as the esters methyl and ethyl 2‐methylbutanote (9, 10) are resolved into their mirror images without derivatization. Chiral capillary gas chromatography was used to determine the enantiomeric distribution of the 2‐methylbutanoates 9 and 10 in pineapples and 15 apple varieties, using extractive and dynamic headspace methods, respectively.