bluuebunny/crossref_metadata_2025_split huggingface dataset:
Integrals of relay feedback responses for extracting process information
Authors: Lee Jietae , Sung Su Whan , Edgar Thomas F. 
Published: July 2007

AbstractRelay feedback methods have been widely used in tuning proportional‐integral‐derivative controllers automatically. Previous approaches usually use specific point data such as the oscillation amplitude and period of the relay response. In this article, we propose new identification methods, which use integrals of the relay response instead of the point data. The proposed methods guarantee better accuracy and advantages in obtaining the ultimate information of process as well as parametric models compared with previous approaches, because effects of the high order harmonic terms are suppressed significantly using the integrals of the relay responses. © 2007 American Institute of Chemical Engineers AIChE J, 2007
Modeling solubilities of sugars in alcohols based on original experimental data
Authors: Montañés Fernando , Olano Agustín , Ibáñez Elena , Fornari Tiziana 
Published: July 2007

AbstractSolubility of six different carbohydrates in methanol, ethanol, 1‐propanol, and 2‐propanol were measured at 22, 30, and 40°C. Ketose sugars (fructose, tagatose, and lactulose) show higher solubilities than aldoses (glucose, galactose, and lactose). The binary solid–liquid equilibrium data obtained was satisfactory represented by using the A‐UNIFAC model. Additionally, the capability of the model to predict the carbohydrate solubility in alcohol–alcohol and alcohol–water mixed solvents was explored. © 2007 American Institute of Chemical Engineers AIChE J, 2007
A comparative volumetric analysis of the amygdaloid complex and basolateral division in the human and ape brain
Authors: Barger Nicole , Stefanacci Lisa , Semendeferi Katerina 
Published: July 2007

AbstractThe amygdaloid complex functions to facilitate effective appraisal of the social environment and is an essential component of the neural systems subserving social behavior. Despite its critical role in mediating social interaction, the amygdaloid complex has not attracted the same attention as the isocortex in most evolutionary analyses. We performed a comparative analysis of the amygdaloid complex in the hominoids to address the lack of comparative information available for this structure in the hominoid brain. We demarcated the amygdaloid complex and the three nuclei constituting its basolateral division, the lateral, basal, and accessory basal nuclei, in 12 histological series representing all six hominoid species. The volumes obtained for these areas were subjected to allometric analyses to determine whether any species deviated from expected values based on the other hominoids. Differences between groups were addressed using nonparametric comparisons of means. The human lateral nucleus was larger than predicted for an ape of human brain size and occupied the majority of the basolateral division, whereas the basal nucleus was the largest of the basolateral nuclei in all ape species. In orangutans the amygdala and basolateral division were smaller than in the African apes. While the gorilla had a smaller than predicted lateral nucleus, its basal and accessory basal nuclei were larger than predicted. These differences may reflect volumetric changes occurring in interconnected cortical areas, specifically the temporal lobe and orbitofrontal cortex, which also subserve social behavior and cognition, suggesting that this system may be acted upon in hominoid and hominid evolution. Am J Phys Anthropol, 2007. © 2007 Wiley‐Liss, Inc.
Synthesis and comparative physicochemical investigation of partly aromatic cardo copolyesters
Authors: Joshi N. B. , Raja Atul , Parsania P. H. 
Published: July 2007

AbstractCopolyesters were synthesized through the condensation of 0.0025 mol of 1,1′‐bis(3‐methyl‐4‐hydroxyphenyl)cyclohexane, 0.0025 mol of ethylene glycol/propylene glycol/1,4‐butanediol/1,6‐hexane diol, and 0.005 mol of terephthaloyl chloride with water/chloroform (4:1 v/v) as an interphase, 0.0125 mol of sodium hydroxide as an acid acceptor, and 50 mg of cetyl trimethyl ammonium bromide as an emulsifier. The reaction time and temperature were 2 h and 0°C, respectively. The yields of the copolyesters were 81–96%. The structures of the copolyesters were supported by Fourier transform infrared and 1H‐NMR spectral data and were characterized with the solution viscosity and density by a floatation method (1.1011–1.2697 g/cm3). Both the intrinsic viscosity and density of the copolyesters decreased with the nature and alkyl chain length of the diol. The copolyesters possessed fairly good hydrolytic stability against water and 10% solutions of acids, alkalis, and salts at room temperature. The copolyesters possessed moderate‐to‐good tensile strength (11–37.5 MPa), good‐to‐excellent electric strength (19–45.6 kV/mm), excellent volume resistivity (3.8 × 1015 to 2.56 × 1017 Ω cm), and high glass‐transition temperatures (148–195°C) and were thermally stable up to about 408–427°C in a nitrogen atmosphere; they followed single‐step degradation kinetics involving 38–58% weight losses and 34–59% residues. The copolyesters followed 2.6–2.9‐order degradation kinetics. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Long‐term plant community changes in managed fens in Ohio, USA
Authors: Barry Matthew J. , Andreas Barbara K. , De Szalay Ferenc A. 
Published: July 2007

Abstract
Long‐term studies are necessary to describe effects of restoration efforts on plant communities and invasive species in North American fen communities. In 1986, 1999 and 2000, wetland plant communities and abiotic factors were sampled in two fens in Ohio that were actively managed as a state nature preserve since 1986. The correlation between plant species and environmental conditions was examined in 1986 to 2000, and changes in woody plant cover were measured on aerial photographs from 1938 to 1997 to analyse long‐term effects of management practices.
142 vascular plant species and 32 bryophyte taxa were found in these rich fens, including 13 rare (i.e. state‐listed as endangered, threatened or potentially threatened) and 14 alien species. TWINSPAN analyses identified nine plant community types, and species distributions were correlated with several abiotic factors (groundwater depth, pH, soil organic content, distance from wetland edge and depth of peat). Communities along the wetland edge in deep peat had higher richness, more woody species, more alien species and fewer rare species than communities in areas near sources of flowing groundwater with more marl and less peat.
There was little change in species richness, evenness, and Shannon's diversity from 1986 to 2000. However, plant species assemblages changed during the study, and changes were different in unmanipulated transects compared with those where habitat managers removed invasive woody plants. An aerial photograph analysis indicated that woody plant cover increased by about 1% each year during 1938 to 1997 despite current management efforts to remove invasive trees and shrubs. Additional strategies should be directed toward reducing shrub encroachment and invasive species while promoting rare species.
Copyright © 2007 John Wiley & Sons, Ltd.
Evidence of Temporary Airway Epithelial Repopulation and Rare Clonal Formation by BM‐derived Cells Following Naphthalene Injury in Mice
Authors: Serikov Vladimir B. , Popov Boris , Mikhailov Viacheslav M. , Gupta Naveen , Matthay Michael A. 
Published: July 2007

AbstractThe goal of the study was to investigate participation of bone marrow (BM) cells in the process of airway epithelial restoration after naphthalene‐induced injury. We transplanted sex‐mismatched green fluorescent protein (GFP) ‐tagged BM‐derived cultured plastic‐adherent mesenchymal stem cells into 5Gy‐irradiated C57BL/6 recipients. After 1 month of recovery, experimental animals were subjected to 250 mg/kg naphthalene IP. Animals were killed at 2–30 days after naphthalene. By immunofluorescence, immunohistochemistry, and by in situ hybridization for the Y‐chromosome, we observed patches of donor‐derived cells in the large and small conducting airways, mostly at 2–6 days after injury. GFP+ cells in the epithelium of airways were positive for pancytokeratin and some other epithelial markers. Although rare, GFP+ cells formed clear isolated patches of the bronchial epithelium, consistent with clonal formation; as some cells were also positive for proliferating cell nuclear antigen, a marker of proliferating cells. After day 12, only occasional GFP+ cells were present in the epithelium. These data confirm that bone marrow‐derived cultured mesenchymal cells can participate in the recovery of the injured airway epithelium after naphthalene‐induced injury with minimal long‐term engraftment. Anat Rec, 2007. © 2007 Wiley‐Liss, Inc.
Bautechnisch‐bauphysikalische Beurteilung der Wirksamkeit energetischer Sanierungen am Beispiel städtischer Wohnhausanlagen in Wien
Authors: Maydl Julia , Korjenic Azra , Dreyer Jürgen 
Published: July 2007

AbstractDurch die Verpflichtung Österreichs im Zuge der Kyoto‐Ziele seine Treibhausgasemissionen um 13% gegenüber dem Basisjahr 1990 zu verringern, entstanden sowohl Klimaschutzprogramme der Bundesregierung als auch der Länder. Die Programme beinhalten verschiedene Maßnahmen um den Ausstoß schädlicher Treibhausgase, allen voran CO2, zu minimieren. Ein Schwerpunkt wurde dabei dem Sektor Wohnen und Bauen zugesprochen, da hier sehr viel Potential vorhanden ist. Denn thermisch‐energetische Sanierungsmaßnahmen haben nicht nur einen positiven Einfluss auf die Energiekennzahl eines Gebäudes, sondern auch auf die Heizkosten, den CO2‐Ausstoss und das Raumklima. Im Zuge dieser Arbeit wurden verschiedene Untersuchungen angestellt, um die bautechnisch‐bauphysikalische Zweckmäßigkeit thermischer Sanierungen zu überprüfen. Neben der Auswertung vorhandener Daten wurden auch eigene Untersuchungen durchgeführt. Die Frage nach der Wirtschaftlichkeit einer Dämmung sowie der Amortisationszeit wurde ebenso behandelt wie der Einfluss der Dämmstoffdicke auf den Heizwärmebedarf oder mögliche CO2‐Einsparpotentiale.
Untersuchung zur Lärmbelastung von Patienten und Pflegepersonal auf Intensivstationen
Authors: Arnold Jörg , Kornadt Oliver 
Published: July 2007

AbstractZur Untersuchung der Lärmbelastung auf Intensivstationen in Krankenhäusern wurden Schalldruckpegelmessungen sowohl in einem Patientenzimmer als auch in dem Foyer einer Intensivstation durchgeführt. Im Patientenzimmer wird eine hohe Lärmbelastung festgestellt. Zudem belegen die Messergebnisse, dass in jeder untersuchten Stunde Lärmereignisse auftraten, die leicht zum Aufwachen führen. Diese hohe Lärmdichte hat einen dramatischen Einfluss auf den Schlaf und damit auf die Erholung und Gesundung des Patienten. Es wurde eine für gesunde Patienten “sichere Aufwachschwelle” definiert, die auch in der Nacht im Mittel 5 mal je Stunde überschritten wird. Allerdings existieren in Deutschland bisher keine Grenzwerte zur Beurteilung der Lärmeinwirkung auf Patienten. Im Foyer ist in jeder untersuchten Schicht die geistige Arbeit des Pflegepersonals nach den Vorgaben der Richtlinie VDI 2058 deutlich beeinträchtigt und die zulässige Grenze für überwiegend mechanisierte Tätigkeiten wird fast erreicht. Nach dem aktuellen Arbeitsrecht sind allerdings alle Vorgaben eingehalten, da lediglich ein Grenzwert zum Schutz vor Lärmschwerhörigkeit angegeben wird. Das Ausmaß des Lärms und der dadurch verursachte Stress, sowohl für Patienten als auch für das Pflegepersonal, zeigen den dringenden Bedarf nach gesetzlichen Regelungen auch in Deutschland.
Radonexhalation ausgewählter Baustoffe in Abhängigkeit von der Dichte
Authors: Rubin Jan Antoni , Ślusarek Jan 
Published: July 2007

AbstractEs werden die Ergebnisse der Bestimmung der natürlichen Radioaktivität einiger beispielhafter Bauprodukte und ‐stoffe, insbesondere von mineralischen Wärmedämmstoffen vorgestellt. Die Untersuchungen wurden an mineralischen Baustoffen von körniger und verdichteter Form durchgeführt. Zum Vergleich werden auch die Werte der “Radioaktivität” von Styropor und Naturfaser dargestellt. Sowohl die Simulationsergebnisse als auch die Messergebnisse der Radonexhalation aus den Proben werden in Abhängigkeit von verschiedenen technischen Parametern gezeigt.
Untersuchungen zur Wärmeleitfähigkeit ausgewählter einheimischer und fremdländischer Holzarten
Authors: Niemz Peter 
Published: July 2007

AbstractEs wurde die Wärmeleitfähigkeit verschiedener Holzarten nach Klimatisierung im Normalklima bei 20°C/65% relative Luftfeuchte geprüft. Die Wärmeleitfähigkeit steigt im untersuchten Bereich linear mit der Rohdichte an.
Anwendung brennbarer Dämmstoffe im mehrgeschossigen Holzbau
Authors: Hosser Dietmar , Kampmeier Björn 
Published: July 2007

AbstractIn einem Verbundforschungsvorhaben wurde mit Hilfe von Brandversuchen im Labormaßstab und im Realmaßstab untersucht, ob brennbare Dämmstoffe auch im mehrgeschossigen Holztafelbau der Gebäudeklasse 4 eingesetzt werden können. Im Vergleich zu Gebäuden mit nichtbrennbarer Dämmung erhöht sich das Brandrisiko nicht, wenn durch Einhaltung bestimmter konstruktiver Randbedingungen eine Entzündung der brennbaren Dämmung und eine kritische Rauchgasentwicklung verhindert werden.
Features predicting unresectability in hepatoblastoma
Authors: D'Antiga Lorenzo , Vallortigara Francesca , Cillo Umberto , Talenti Enrico , Rugge Massimo , Zancan Lucia , Dall'Igna Patrizia , Salvo Gian Luca De , Perilongo Giorgio 
Published: July 2007

AbstractBACKGROUND.Approximately 20% of patients who have hepatoblastoma (HB) still have unresectable disease after preoperative chemotherapy (POC). In these circumstances, orthotopic liver transplantation (OLT) should be performed 1 month after POC. The authors sought to identify presenting features that would predict unresectability in patients with HB and to provide suggestions for early referral and listing for OLT.METHODS.Notes, radiology films, and histology from patients who were treated over the previous 20 years were reviewed. Unfeasible resection was defined by bilobar involvement, vascular extension, and metastatic disease after POC. Failed conservative treatment (FCT) was used to categorize patients who were not disease‐free with their native liver ≥1 year after surgery.RESULTS.Of 28 patients who were studied, 14 patients underwent resection, and 10 patients required OLT. Four patients did not undergo any type of surgery because of tumor progression. Overall, the 5‐year survival rate was 76% (95% confidence interval, 54.8–89%). Predictors of FCT were multifocality (P = .006), a high pretreatment extent of tumor (PRETEXT) score (III or IV; P = .006), portal vein involvement (P = .02), hepatic vein involvement (P = .02), or vena cava involvement (P = .05). Patients who achieved a curative resection presented at a younger age (median, 0.7 years vs 4.2 years, P = .02). Patients who had multifocal lesions and those who had an α‐fetoprotein (αFP) level <100 ng/mL survived only if they underwent transplantation.CONCLUSIONS.Patients with HB who were managed by combined chemotherapy and surgery has a high survival rate. Older patients who had multifocal tumors, high PRETEXT scores, involvement of major liver vessels, and αFP levels <100 ng/mL were less likely to achieve curative resection. These findings at presentation should lead the clinicians to liaise early with a transplantation center. Cancer 2007. © 2007 American Cancer Society.
Foxl1‐Cre BAC transgenic mice: a new tool for gene ablation in the gastrointestinal mesenchyme
Authors: Sackett Sara D. , Fulmer James T. , Friedman Joshua R. , Kaestner Klaus H. 
Published: July 2007

AbstractThe use of Cre‐loxP technology for the purpose of cell type‐specific gene ablation has revolutionized developmental biology and biomedicine. Several transgenic mouse lines have been developed for the analysis of gene function in the gastrointestinal tract, but in all of these the expression of Cre is limited to the epithelial cell layer. No Cre‐ expressing transgenic mouse lines (“Cre lines”) exist for the deletion of loxP‐flanked genes specifically in gut mesoderm. To address this deficiency, we have derived a bacterial artificial chromosome based transgenic mouse line in which the Cre gene is controlled by the Foxl1 promoter and enhancer elements. X‐Gal staining of Foxl1‐Cre; Rosa26R bi‐transgenic lines confirm that Foxl1‐Cre results in recombination specifically in the gastrointestinal mesenchyme. The Foxl1‐Cre line will facilitate the dissection of mesenchymal to epithelial signaling that is known to play a major role in the patterning and function of the gastrointestinal tract. genesis 45:518–522, 2007. Published 2007 Wiley‐Liss, Inc.
Recognition of Pyrene Using Molecularly Imprinted Electrochemically Deposited Poly(2‐mercaptobenzimidazole) or Poly(resorcinol) on Gold Electrodes
Authors: Luo Ning , Hatchett David W. , Rogers Kim R. 
Published: July 2007

AbstractThe feasibility of using thiol chemistry to form molecularly imprinted polymer‐coated gold electrodes to measure pyrene is reported. For the first approach, poly(2‐mercaptobenzimidazole) (2‐MBI) was electrochemically deposited on gold electrodes in the presence or absence of the template pyrene. For the second approach, the pyrene derivative N‐(1‐pyrenyl)maleimide was covalently bound to 1,3‐propane thiol that had been previously self‐assembled on a cleaned gold surface. Resorcinol was then electrochemically polymerized onto the electrode followed by electrochemical stripping of the thiolated pyrene from the polymer‐coated electrode. For both electrode configurations, the binding of pyrene to the MIP‐coated electrode was detected indirectly through pyrene‐dependent access of a ferricyanide probe to the electrode surface as measured using square‐wave voltammetry.
Evaluation of GaN and In0.2Ga0.8N Semiconductors as Potentiometric Anion Selective Electrodes
Authors: Dimitrova Rozalina , Catalan Lionel , Alexandrov Dimiter , Chen Aicheng 
Published: July 2007

AbstractThe response of potentiometric anion selective electrodes consisting of undoped GaN or In0.2Ga0.8N films grown on Al2O3 (sapphire) was measured in electrolyte solutions of F−, NO3−, Cl−, SCN−, ClO4− or Br− anions at concentrations ranging from 10−6 to 10−1 M. The slope of the linear regions varied between −32.8 and −51.9 mV/decade for the GaN electrode and between −31.0 and −72.0 mV/decade for the In0.2Ga0.8N electrode. The drift of the GaN electrode reached 1.57 mV/day in KNO3 solutions, whereas the drift of the In0.2Ga0.8N electrode could not be evaluated due to large drops in the slope of its linear range over time. Both electrodes were sensitive to pH variations over the pH range from 12.8 to 1.3. The GaN electrode surface could be electrochemically etched under anodic polarization; however, both GaN and In0.2Ga0.8N electrodes remained chemically stable and mechanically intact under open circuit conditions even after prolonged use.
Double Elimination Voltammetry of Short Oligonucleotides
Authors: Mikelova Radka , Trnkova Libuse , Jelen Frantisek 
Published: July 2007

AbstractIn connection with adsorptive stripping (AdS) technique, elimination voltammetry with linear scan (EVLS) in double mode was successfully employed in the analysis of homo‐ODNs: 5′‐AAA AAA AAA‐3′ (dA9) and 5′‐CCC CCC CCC‐3′ (dC9), and hetero‐ODNs: 5′‐CCC AAA CCC‐3′ (H3), 5′‐CAC CAC CAC‐3′ (H4), and 5′‐ACC CAC CCA‐3′ (H9) on hanging mercury drop electrode (HMDE). Analogously to single EVLS function E4 (conserving the diffusion current Id and eliminating kinetic and charging currents Ik, Ic) for the electroactive substance adsorbed, the double EVLS function E4 yields well readable peak‐counterpeaks of reducible nucleic acid bases (adenine A and cytosine C). In comparison with single EVLS these peak‐counterpeaks are higher by more than one order of magnitude (twenty times for dA9, fourteen times for dC9, from eight to sixteen times for hetero‐ODNs). The increase of reduction signals with higher resolution was also observed using other two EVLS functions in double mode, the functions E5 eliminating Ic and Id, but conserving Ik and E6 eliminating Id and Ik, but conserving Ic. The amplifications of double /single EVLS signals of A and C range from 3.4 to 8.4, and from 3.1 to 8.3 for E5 and E6, respectively. It was proved that AdS double EVLS offers a new, fast, simple and inexpensive electroanalytical tool, which can be considered as a device not only for very good resolution of A and C in ODNs, but also for sensitive detection of changes in the primary structure of nucleic acid bases in ODN chains, depending on experimental conditions, such as pH, temperature, and time and potential of accumulation.
Synthesis and Characterization of Novel Quinone‐Amine Polymer/Carbon Nanotubes Composite for Sensitive Electrocatalytic Detection of NADH
Authors: Tu Xinman , Xie Qingji , Huang Zhao , Yang Qin , Yao Shouzhuo 
Published: July 2007

AbstractA novel nanocomposite of quinone‐amine polymer and multiwalled carbon nanotubes was synthesized from iodate‐oxidation/Michael addition reaction of 1,2‐dihydroxybenzene with o‐phenylenediamine, which was characterized by TEM, FTIR and UV‐vis spectra. The nanocomposite modified Au electrode with well‐defined quinone redox peaks effectively mediated the oxidation of NADH in pH 7.0 phosphate buffer, with an overpotential decrease by ca. 470 mV (vs. bare Au), a limit of detection of 6.4 nmol L−1 and good antiinterferent ability.
Electrochemical Immunoassay for Carbohydrate Antigen‐125 Based on Polythionine and Gold Hollow Microspheres Modified Glassy Carbon Electrodes
Authors: Fu Xiao‐Hong 
Published: July 2007

AbstractA new electrochemical immunosensor for the detection of carbohydrate antigen‐125 (CA125), a carcinoma antigen, was developed by immobilization CA125 antibody (anti‐CA125) on gold hollow microspheres and porous polythionine (PTH) modified glassy carbon electrodes (GCE). The gold hollow microspheres provided a biocompatible microenvironment for proteins, and greatly amplified the coverage of anti‐CA125 molecules on the electrode surface. The performance and factors influencing the immunosensor were investigated in detail. The detection is based on the current change before and after the antigen‐antibody interaction. Under optimal conditions, the amperometric changes were proportional to CA125 concentration ranging from 4.5 to 36.5 U/mL with a detection limit of 1.3 U/mL (at 3σ). The CA125 immunosensor exhibited good precision, high sensitivity, acceptable stability, accuracy and reproducibility. The as‐prepared immunosensors were used to analyze CA125 in human serum specimens. Analytical results suggest that the developed immunoassay has a promising alternative approach for detecting CA125 in the clinical diagnosis.
Numerical simulations of the second‐order electrokinetic bias observed with the gated injection mode in chips
Authors: Blas Maximilien , Delaunay Nathalie , Ferrigno Rosaria , Rocca Jean‐Louis 
Published: July 2007

AbstractIt is well known that sample introduction via electrokinetic mode leads to a bias in conventional CE, which is proportional to the difference of electrophoretic mobilities between species. In electrophoretic separation chips using the gated injection mode, flow distribution at the crossjunction, which is linked to the electric field strength distribution during the loading step, induces an additional contribution to species discrimination. This second‐order bias has a similar effect on quantitation like usual electrokinetic bias: the higher the analyte's apparent mobility, the larger the amount injected into the separation channel. The present paper assesses by numerical simulations the influence of several parameters, namely the injected amount, the electric field distribution, and the analyte‐apparent Peclet number on this second‐order bias.