bluuebunny/crossref_metadata_2025_split huggingface dataset:
Volume Change Behavior of Poly(l-lysine-alt-terephthalic acid) Microcapsules Encapsulating Glucose Oxidase
Authors: Kishigawa Takeshi , Tagami Yasunobu , Narita Takayuki , Oishi Yushi 
Published: October 2012

Abstract
Glucose-sensitive microcapsules, whose volume changed in response to glucose, were successfully prepared by encapsulating glucose oxidase (GOx) into poly(l-lysine-alt-terephthalic acid) (PPL) microcapsules. The GOx–PPL microcapsules decreased in size in a glucose solution, after a certain lag time. The shrinking rate of the capsules showed a linear correlation with glucose concentration, while the lag time showed a logarithmical correlation with the glucose concentration.
pH-Dependent Interactions between Membrane and Histidine-containing Peptides
Authors: Kato Noritaka , Kawamata Tomohiro , Sasaki Takanori , Mukai Yuri 
Published: October 2012

Abstract
A 26-residue peptide containing six histidine (H) residues showed a pH-dependent interaction with a membrane. At a basic pH, where the H residues were deprotonated, the peptides formed a helical structure and adopted a transmembrane alignment in the lipid vesicles. At an acidic pH, where the H residues were protonated, they exhibited a mixture of β and random forms and were aggregated or dissolved in the aqueous phase.
Dynamics of Condensed Monolayer and Multilayer Formation of Hexadecylpyridinium Chloride–Sodium Dodecyl Sulfate Mixed Systems at the Air/Water Interface
Authors: Takumi Hiroki , Noda Megumi , Matsubara Hiroki , Takiue Takanori , Aratono Makoto 
Published: October 2012

Abstract
The adsorption dynamics of mixed adsorbed films of hexadecylpyridinium chloride (HPC) and sodium dodecyl sulfate (SDS) were investigated through external reflection–absorption FTIR (ERA FTIR) and surface tension measurements, following two different experimental approaches. In the first approach (case 1), solutions of SDS and HPC, at the desired total concentration and composition, were first introduced into the measurement cell, and then, the measurement was started. In the second approach (case 2), the HPC solution, at a given concentration, was first introduced into the cell, and after adsorption equilibrium was reached, a certain volume of concentrated SDS solution (to attain the desired total concentration and composition) was added to the cell, and the measurement was continued. The experiments clearly showed that the adsorption rate, as well as the mechanism, differed significantly between the two approaches.
Relationship between Contact Angle, Infrared Absorbance, and Compressibility of Diol Compounds on Metal Surface
Authors: Hachiya Kazuaki , Tanaka Takao 
Published: October 2012

Abstract
An analytical method for observing the interaction between a metal oxide surface and diol compounds such as poly(ethylene glycol) and poly(propylene glycol) has been newly developed using infrared absorption and contact-angle measurements. The infrared absorbances of both poly(ethylene glycol) and poly(propylene glycol) at 3496 cm−1 were proportional to the oil film thicknesses, but the absorbance intercepts in the plots of absorbance versus film thicknesses were negative at zero film thickness. The negative intercepts indicate that the hydroxy groups of poly(ethylene glycol) or poly(propylene glycol) disappeared owing to the adsorption of the diol compound molecules on the metal oxide surface. The contact angles of poly(ethylene glycol) and poly(propylene glycol) at 40 °C decreased with an increase in the heat-treatment temperature of the metal plate, but the contact angle of hydrophobic poly(propylene glycol) was smaller than that of hydrophilic poly(ethylene glycol) on the metal oxide surface. The difference in contact angle resulted from the fact that adjacent poly(ethylene glycol) or poly(propylene glycol) molecules inside the drop were connected by hydrogen bonding with the –OH groups on both ends of the molecules.
Time-dependent Dynamic Receding Contact Angles Studied during the Flow of Dilute Aqueous Surfactant Solutions through Fluorinated Microtubes
Authors: Anyfantakis Manos , Fell Daniela , Butt Hans-Jürgen , Auernhammer Günter K 
Published: October 2012

Abstract
We report on the time-dependent dewetting behavior of dilute surfactant solutions of hexadecyltrimethylammonium bromide (CTAB) during forced flow in fluorinated ethylene–propylene (FEP) microtubes. The dynamic receding contact angle of the solution at a given velocity decreased as the solid–liquid contact time increased. Kinetics with long relaxation time of several hundred seconds led to a final state displaying a 0° dynamic receding contact angle. This effect was absent in the case of 2-propanol, where the dynamic receding contact angle did not depend on the contact time.
Self-spreading of Supported Lipid Bilayer on SiO2 Surface Bearing Graphene Oxide
Authors: Furukawa Kazuaki , Hibino Hiroki 
Published: October 2012

Abstract
We investigate the self-spreading phenomenon of a supported lipid bilayer (SLB) on an SiO2 surface bearing graphene oxide (GO) that is thinner than the SLB and hydrophilic. Time-lapse confocal laser scanning microscopy observations suggest that the SLB is formed on the SiO2 surface, but not on the GO pieces. The selective formation of an SLB is proven by time-lapse atomic force microscopy (AFM) observations, which show topographically that the self-spreading is blocked by GO pieces. This provides the first AFM observations of an SLB under self-spreading conditions.
Surface Modification of Porous Silica with the Liquid Phase Deposition Process Using Solid Materials for Fluorine Scavenger
Authors: Hasegawa Takashi , Matsumoto Satoru , Mizuhata Minoru 
Published: October 2012

Abstract
TiO2-modified silica-based MCM-41 (Si-MCM-41) was prepared by liquid phase deposition (LPD) without a conventional fluorine scavenger such as H3BO3. TiO2 was deposited on Si-MCM-41 by LPD reactions for 1–48 h. Using Si-MCM-41, TiO2 was deposited on the inner surface of silica with etching phenomena. After the LPD reactions, Si species were detected in the reaction solution as a result of etching phenomena of silica. It was confirmed that Si-MCM-41 also acted as a fluorine scavenger by dissolving and forming hexafluorosilicate in aqueous hexafluorotitanate solution. The deposition behavior was greatly influenced by the volume of the reaction solution. The photocatalytic activity of the modified Si-MCM-41 was much higher than that of conventional catalysts such as TiO2:P25.
Evaluation of pH of Water between Solid Surfaces Using Surface Forces Apparatus Fluorescence Spectroscopy
Authors: Saito Yuko , Kasuya Motohiro , Kurihara Kazue 
Published: October 2012

Abstract
Fluorescence spectrum measurement of fluorescein was performed for monitoring the pH of water between mica and silica surfaces by varying the surface separation (D) using a surface forces apparatus (SFA) fluorescence spectroscopy. The pH value of water between silica surfaces decreased drastically with a decrease in D to values below 1200 nm, which was longer than that in the case of mica (600 nm). This pH decrease was attributed to concentrated proton in electric double layer of negatively charged surfaces.
A Novel Ammonia Gas Sensor Using a Nanoassembled Polyelectrolyte Thin Film on Fiber-optic Long-period Gratings
Authors: Wang Tao , Korposh Sergiy , Wong Rebecca , James Stephen , Tatam Raph , Lee Seung-Woo 
Published: October 2012

Abstract
A novel ammonia gas sensor using a polyelectrolyte thin film composed of poly(diallyldimethylammonium chloride) (PDDA) and poly(acrylic acid) (PAA), PDDA/PAA, is demonstrated with a long-period grating (LPG) optical fiber. PAA could act as a selective receptor for ammonia binding, which induced significant changes in the optical thickness and density of the film owing to the pronounced electrostatic interaction between the alternate layers.
Thin–Thick Transition of Foam Film Driven by Phase Transition of Surfactant–Alkane Mixed Adsorbed Film
Authors: Ohtomi Eisuke , Ikeda Norihiro , Tokiwa Yuhei , Watanabe Iwao , Tanida Hajime , Takiue Takanori , Aratono Makoto , Matsubara Hiroki 
Published: October 2012

Abstract
This paper reports the influence of surface phase transitions of a surfactant–alkane mixed adsorbed film on the foam film thickness. The DLVO free-energy between the adsorbed films is estimated using total-reflection XAFS. The foam film thickness shows discontinuous changes at the surface phase transition. In addition, the foam film thicknesses on either side of the thickness transition were in the range for common black films (CBFs), which shows a striking difference from existing thin–thick transitions between CBF and Newton black films (NBFs).
Preparation of Pd Nanoparticles Covered with Organosilica Layers and Their Catalytic Properties for Cyclohexane Dehydrogenation
Authors: Nakagawa Keizo , Hoshinoo Tomoya , Sotowa Ken-Ichiro , Sugiyama Shigeru , Rkiouak Laylla , Dubois Vincent , Hermans Sophie 
Published: October 2012

Abstract
Carbon black (CB)-supported Pd catalysts (Pd/CB) were covered with organosilica layers via the hydrolysis of phenyltriethoxysilane (PhTES). Coverage of Pd nanoparticles with organosilica layers suppressed particle sintering of Pd, as compared to the case of uncovered Pd/CB. The organosilica layers had hydrophobic properties because of the presence of phenyl groups. As a result, the organosilica-coated Pd catalysts prepared using PhTES showed superior catalytic performance for cyclohexane dehydrogenation, even after reduction at 623 K under H2 atmosphere.
The perils of dental vacation: possible anaesthetic and medicolegal consequences
Authors: Feltracco Paolo , Maria Gaudio Rosa , Barbieri Stefania , Tiano Letizia , Iacobone Maurizio , Viel Giovanni , Tonetti Tommaso , Galligioni Helmut , Bortolato Andrea , Ori Carlo , Maria Avato Francesco 
Published: October 2012

Introduction The aim of this paper is to emphasize anaesthesiologists’ difficulty in detecting poor dentition in cases of poorly applied prostheses and/or advanced periodontal disease, and to establish whether it is possible, and in which conditions, to calculate compensation in cases of dental damage postlaryngoscopy and/or intubation. The main complex problem here lies in trying to reconstruct exactly what the dental situation was before the teeth were damaged. For this reason the important preoperative factors (dental prostheses, crown fractures, parodontal disease, etc.) must be clearly shown before surgery on a dental chart. Clinical cases Two cases of interest, both to anaesthesiologists practising intubation and medicolegal physicians who have to deal with potential claims, are briefly reported. The first patient was a 55-year-old diabetic patient, who underwent emergency surgery for acute abdominal pathology. He had gone outside Italy for dental treatment three years previously and now presented with very poor pre-existing dentition, carefully noted on an anaesthetic chart. He now demanded compensation for dental damage due to intubation in Italy; the resulting dental treatment was very expensive because substantial remedial work was required. The second patient had received treatment outside Italy, work which involved cosmetic coating of the teeth. After surgery in Italy, she demanded compensation because one tooth, which had been coated and appeared to be healthy, was broken after emergency intubation. In both cases, the patients demanded very high compensation. Comment Dental tourism alone accounts for more than 250,000 patients each year who combine a holiday with dental treatment in Eastern Europe. However, if prosthetic devices or conservative treatments are not applied correctly, it should be noted that durability may be poorer than expected, but iatrogenic damage may also be caused.
Distribution and Clinical Correlates of the Interleukin Receptor Family Member Soluble ST2 in the Framingham Heart Study
Authors: Coglianese Erin E , Larson Martin G , Vasan Ramachandran S , Ho Jennifer E , Ghorbani Anahita , McCabe Elizabeth L , Cheng Susan , Fradley Michael G , Kretschman Dana , Gao Wei , O'Connor George , Wang Thomas J , Januzzi James L 
Published: October 2012

BACKGROUND
Soluble ST2 (sST2) is a cardiac biomarker whose concentration rises in response to myocardial strain. Increased sST2 concentrations may predict adverse outcomes in patients with heart failure and myocardial infarction. Because sST2 was largely undetectable with first-generation assays in ambulatory individuals, there are few data regarding its distribution and correlates in community-based populations.

METHODS
We measured sST2 using a highly sensitive ELISA in 3450 Framingham Heart Study participants who attended a routine examination. We used multivariable linear regression models to identify covariates associated with sST2 in the general sample. We obtained a reference sample (n = 1136) by excluding individuals with prevalent coronary disease, heart failure, atrial fibrillation, diabetes, hypertension, obesity, valvular disease, left ventricular systolic dysfunction, and pulmonary and renal dysfunction. We used empiric and quantile regression techniques to estimate the 2.5th, 50th, 97.5th, and 99th quantiles.

RESULTS
In the general sample (mean age 59 years, 55% women), systolic blood pressure (P = 0.006), antihypertensive medication use (P = 0.03), and diabetes (P &lt; 0.001) were associated with sST2 concentrations. In the reference sample (mean age 55, 59% women), male sex (P &lt; 0.0001) and older age (P = 0.004) were predictive of higher sST2 concentrations. Quantile and empirical methods were used to define the reference intervals. Using the empirical approach, upper 99% percentile values in different age groups ranged from 46.6 to 64.4 μg/L in men and 36.7 to 53.0 μg/L in women.

CONCLUSIONS
In a well-characterized, community-based cohort, values for sST2 differ between men and women, increase with age, and are associated with diabetes and hypertension.
Cancer Genome Scanning in Plasma: Detection of Tumor-Associated Copy Number Aberrations, Single-Nucleotide Variants, and Tumoral Heterogeneity by Massively Parallel Sequencing
Authors: Chan KC Allen , Jiang Peiyong , Zheng Yama WL , Liao Gary JW , Sun Hao , Wong John , Siu Shing Shun N , Chan Wing C , Chan Stephen L , Chan Anthony TC , Lai Paul BS , Chiu Rossa WK , Lo YMD 
Published: October 2012

BACKGROUND
Tumor-derived DNA can be found in the plasma of cancer patients. In this study, we explored the use of shotgun massively parallel sequencing (MPS) of plasma DNA from cancer patients to scan a cancer genome noninvasively.

METHODS
Four hepatocellular carcinoma patients and a patient with synchronous breast and ovarian cancers were recruited. DNA was extracted from the tumor tissues, and the preoperative and postoperative plasma samples of these patients were analyzed with shotgun MPS.

RESULTS
We achieved the genomewide profiling of copy number aberrations and point mutations in the plasma of the cancer patients. By detecting and quantifying the genomewide aggregated allelic loss and point mutations, we determined the fractional concentrations of tumor-derived DNA in plasma and correlated these values with tumor size and surgical treatment. We also demonstrated the potential utility of this approach for the analysis of complex oncologic scenarios by studying the patient with 2 synchronous cancers. Through the use of multiregional sequencing of tumoral tissues and shotgun sequencing of plasma DNA, we have shown that plasma DNA sequencing is a valuable approach for studying tumoral heterogeneity.

CONCLUSIONS
Shotgun DNA sequencing of plasma is a potentially powerful tool for cancer detection, monitoring, and research.
REVIEWS
Authors: Cargnelli Christian , Goss Brian Michael 
Published: October 2012

Hedy Lamarr. The Most Beautiful Woman in Film, Ruth Barton (2010) Lexington: The University Press of Kentucky, 281 pp., ISBN 978-0-8131-2604-3, h/bk, $ 29.95
Destination Dictatorship, Justin cumbaugh (2009) Albany: State University of New York Press, 173 pp., ISBN: 978-1-4384-2665-5
(hbk) ($US70.00), 978-1-4384-2666-2 (pbk), $US23.95
BOOK REVIEWS
Authors: Alves Fatima , Henriques Susana 
Published: October 2012

SABER PRĀTICO DE SAŪDE: AS LÓGICAS DO SAUDĀVEL NO QUOTIDIANO, LUISA FERREIRA DA SILVA, 2008 Oporto: Afrontamento, 204pp ISBN: 978-972-36-0911-0, p/bk, €12.12
PERSPECTIVAS DE ANĀLISE ORGANIZACIONAL DAS ESCOLAS, LIMA, L. C. (ED.) (2011), VILA NOVA
DE GAIA Fundação Manuel Leão, 224 pp., ISBN: 9789898151216, p/bk, €14.45
Regulation of steroidogenesis in a primary pigmented nodular adrenocortical disease-associated adenoma leading to virilization and subclinical Cushing's syndrome
Authors: Hofland Johannes , de Herder Wouter W , Derks Lieke , Hofland Leo J , van Koetsveld Peter M , de Krijger Ronald R , van Nederveen Francien H , Horvath Anelia , Stratakis Constantine A , de Jong Frank H , Feelders Richard A 
Published: October 2012

ContextPrimary pigmented nodular adrenocortical disease (PPNAD) can lead to steroid hormone overproduction. Mutations in the cAMP protein kinase A regulatory subunit type 1A (PRKAR1A) are causative of PPNAD. Steroidogenesis in PPNAD can be modified through a local glucocorticoid feed-forward loop.ObjectiveInvestigation of regulation of steroidogenesis in a case of PPNAD with virilization.Materials and methodsA 33-year-old woman presented with primary infertility due to hyperandrogenism. Elevated levels of testosterone and subclinical ACTH-independent Cushing's syndrome led to the discovery of an adrenal tumor, which was diagnosed as PPNAD.In vivoevaluation of aberrantly expressed hormone receptors showed no steroid response to known stimuli. Genetic analysis revealed a PRKAR1A protein-truncating Q28X mutation. After adrenalectomy, steroid levels normalized. Tumor cells were cultured and steroidogenic responses to ACTH and dexamethasone were measured and compared with those in normal adrenal and adrenocortical carcinoma cells. Expression levels of 17β-hydroxysteroid dehydrogenase (17β-HSD) types 3 and 5 and steroid receptors were quantified in PPNAD, normal adrenal, and adrenal adenoma tissues.ResultsIsolated PPNAD cells, analogous to normal adrenal cells, showed both increased steroidogenic enzyme expression and steroid secretion in response to ACTH. Dexamethasone did not affect steroid production in the investigated types of adrenal cells. 17β-HSD type 5 was expressed at a higher level in the PPNAD-associated adenoma compared with control adrenal tissue.ConclusionPPNAD-associated adenomas can cause virilization and infertility by adrenal androgen overproduction. This may be due to steroidogenic control mechanisms that differ from those described for PPNAD without large adenomas.
Nanocomposite Bi(Sb)Te(Se) Materials by Cryogenic Mechanical Alloying and Optimized High Pressure Hot-pressing
Authors: Chan Tsung-ta E. , Venkatasubramanian Rama , LeBeau James M. , Thomas Peter , Stuart Judy , Koch Carl C. 
Published: October 2012

ABSTRACTNanocomposite Bi2Te3 based alloys are attractive for their potentially high thermoelectric figure-of-merit (ZT) around room temperature. The nano-scale structural features embedded in the matrix provide more scattering of phonons and can thus reduce the lattice thermal conductivity. To further take advantage of such nanocomposite structures, we focus on the development of nanocrystalline Bi(Sb)Te(Se) powders by high energy cryogenic mechanical alloying followed by an optimized hot pressing process. This approach is shown to successfully produce Bi(Sb)Te(Se) alloy powders with grain size averaging about 9 nm for n-type BiTe(Se) and about 16 nm for p-type Bi(Sb)Te respectively. This cryogenic process offers much less milling time and prevents thermally activated contamination or imperfections from being introduced during the milling process. The nanocrystalline powders are then compacted at optimized pressures and temperatures to achieve full density compactions and preserve the grain sizes effectively. The resulting nano-bulk materials have optimal Seebeck coefficients and are expected to have improved ZT. Thermoelectric properties and microstructure studies by X-ray diffraction and transmission electron microscopy will also be presented and discussed.
Simultaneous Measurements of Thermal Conductivity and Seebeck Coefficients of Roughened Nanowire Arrays
Authors: Sadhu J. S. , Hongxiang T. , Ma J. , Kim J. , Sinha S. 
Published: October 2012

ABSTRACTWe report simultaneous measurements of thermal conductivity and Seebeck coefficient on array-scale silicon nanowires fabricated by metal assisted chemical etching. The measurements are conducted on the solid and the mesoporous nanowire arrays (NWAs) obtained from etching 1 ohm-cm and 0.002 ohm-cm Si substrates respectively. We demonstrate control on sidewall morphology and doping of the arrays that have an aspect ratio up to 20 and 30 % areal coverage. We employ differential frequency-domain measurements, separately on the array and the corresponding substrate to obtain the temperature drop and Seebeck voltage contribution of the nanowire array. The technique is validated by measurements on bulk silicon across the resistivity 0.002-1 ohm-cm. The Seebeck measurements reveal quenching of the phonon drag in the nanowires in comparison to the bulk in the measured temperature range of 300 K- 500 K. The Seebeck coefficient shows a ~18 % decrease in the solid NWAs and ~22 % increase in the mesoporous NWAs at room temperature. The thermal conductivity is close to Casimir limit for the solid wires while it drops to ~2.5 W/mK in the mesoporous nanowires.
Facile Assembly of ZnO Nanoparticles Based on M13 Bacteriophage
Authors: Moon Chung Hee , Haberer Elaine D. 
Published: October 2012

ABSTRACTA genetically modified M13 bacteriophage template was used to biomineralize ZnO. A peptide, EAHVMHKVAPRP [1], with a known affinity for ZnO was genetically displayed on each of five copies of the pIII protein located at one tip of the M13 virus. Site-directed assembly using this pIII peptide fusion was studied using a variety of precursor concentrations, incubation times, and phage concentrations. For comparision, free ZnO-binding peptides were also used to biomineralize ZnO. Isolated, polydisperse, spherical ZnO nanoparticles were formed at all mineralization conditions containing the ZnO-binding M13 bacteriophage, whereas free peptide mineralization resulted in smaller, more irregularly shaped particles which agglomerated at longer incubation times. These studies are preliminary experiments in the investigation of ZnO biomineralization on the various structural proteins of the M13 bacteriophage and cooperative effects which occur between neighboring peptides.