bluuebunny/crossref_metadata_2025_split huggingface dataset:
An innovative method to obtain porous PLLA scaffolds with highly spherical and interconnected pores
Authors: Vaquette Cédryck , Frochot Céline , Rahouadj Rachid , Wang Xiong 
Published: December 2007

AbstractScaffolding is an essential issue in tissue engineering and scaffolds should answer certain essential criteria: biocompatibility, high porosity, and important pore interconnectivity to facilitate cell migration and fluid diffusion. In this work, a modified solvent casting‐particulate leaching out method is presented to produce scaffolds with spherical and interconnected pores. Sugar particles (200–300 μm and 300–500 μm) were poured through a horizontal Meker burner flame and collected below the flame. While crossing the high temperature zone, the particles melted and adopted a spherical shape. Spherical particles were compressed in plastic mold. Then, poly‐L‐lactic acid solution was cast in the sugar assembly. After solvent evaporation, the sugar was removed by immersing the structure into distilled water for 3 days. The obtained scaffolds presented highly spherical interconnected pores, with interconnection pathways from 10 to 100 μm. Pore interconnection was obtained without any additional step. Compression tests were carried out to evaluate the scaffold mechanical performances. Moreover, rabbit bone marrow mesenchymal stem cells were found to adhere and to proliferate in vitro in the scaffold over 21 days. This technique produced scaffold with highly spherical and interconnected pores without the use of additional organic solvents to leach out the porogen. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2008
Histological evaluation and surface componential analysis of modified micro‐arc oxidation‐treated titanium implants
Authors: Ma Wei , Wei Jian‐Hua , Li Ying‐Zhe , Wang Xin‐Mu , Shi Hui‐Ying , Tsutsumi Sadami , Li De‐Hua 
Published: December 2007

AbstractThe objective of this study is to investigate soft tissue and bone tissue reaction to titanium implants treated by a modified micro arc oxidation (MAO) technique, and analyze the surface components and implant‐bone contact ratio by animal experiments to evaluate the osseointegration condition of implants with this modified MAO surface. MAO titanium plates were installed subcutaneously in rabbits. Tissue reaction was evaluated by HE sections. MAO titanium implants designed for endosseous examination were installed in Beagles' femurs. Bone tissue surrounding implants was analyzed histologically. Surfaces of retrieved implants were observed and examined by SEM and EDX. All procedures were performed under the control of untreated pure titanium implants. Thin homogeneous fibrous envelope could be found without apparent inflammation cells infiltration around the subcutaneously imbedded MAO titanium plates, which was almost same as control group. Fast osteoid deposition comprising high content of calcium, phosphor, carbon, and nitrogen elements was found on the retrieved MAO implant surfaces, while comparatively less amount of carbon and nitrogen elements were found on the retrieved implants of control group. Matured bone tissue comprising bone trabeculae and Haversian canals appeared in 8 weeks, while it took 12 weeks needed to form matured bone tissue in control group. In conclusion, MAO titanium materials shows good biocompatibility and calcium phosphate inducement capability in vivo and could accelerate bone tissue growth and shorten the osseointegration time. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2008
Mass spectrometry of hydantoin‐derived selective androgen receptor modulators
Authors: Thevis Mario , Kohler Maxie , Schlörer Nils , Kamber Matthias , Kühn Andreas , Linscheid Michael W. , Schänzer Wilhelm 
Published: December 2007

AbstractN‐Aryl‐hydroxybicyclohydantoins represent a new class of tissue‐selective anabolic agents [selective androgen receptor modulators (SARMs)] and are promising therapeutics as well as drugs prohibited in amateur and professional sport. The dissociation behavior after negative and positive electrospray ionization (ESI) and subsequent collision‐induced dissociation (CID) was studied with a drug candidate (BMS 564929) as well as structurally related and isotope‐labeled analogs using high resolution/high accuracy orbitrap mass spectrometry. Positive ionization and CID yielded characteristic product ions resulting from the cleavage of the hydantoin structure providing information about the proline‐derived nucleus as well as the substituted aryl residue at m/z 96 and 193, respectively. Negative ESI and CID (MS/MS) yielded product ions mainly representing losses of water and CO2, the latter of which is of particular significance as the hydantoin structure does not contain a carboxyl function. Employing MSn experiments with accurate mass determination on six model SARMs, dissociation pathways to characteristic product ions were proposed supporting the identification of these drugs, their metabolites or related compounds in future doping control assays. Copyright © 2007 John Wiley & Sons, Ltd.
Agreement of rubella IgG antibody measured in serum and dried blood spots using two commercial enzyme‐linked immunosorbent assays
Authors: Hardelid P. , Williams D. , Dezateux C. , Cubitt W.D. , Peckham C.S. , Tookey P.A. , Cortina‐Borja M. 
Published: December 2007

AbstractCases of congenital rubella are now rare in the United Kingdom. However, in certain areas such as London, where a significant proportion of pregnant women has been born abroad and uptake of trivalent measles–mumps–rubella (MMR) vaccination is low, the risk of a rubella outbreak remains. Prior to carrying out a seroprevalence study using rubella IgG antibody in newborn dried blood spots as an indirect marker of maternal immunity, rubella IgG antibody concentrations in serum and dried blood spot samples were investigated. Anonymous paired serum–dried blood spot samples left over from occupational health screening were tested for rubella IgG antibody by two commercially available enzyme‐linked immunosorbent assays (ELISAs) (Dade Behring, Marburg, Germany, and Diesse, Siena, Italy). Agreement between serum samples and dried blood spot samples was high for both assays. There were no significant differences in antibody concentrations in paired samples, as 67 of 73 samples tested with the Diesse ELISA (91.8%), and 76 out of 79 samples tested with the Dade Behring ELISA (96.2%) were within two standard deviations of the mean difference. Commercial ELISAs are an appropriate test for seroprevalence surveys based on rubella IgG in dried blood spot samples. J. Med. Virol. 80:360–364, 2008. © 2007 Wiley‐Liss, Inc.
Corporate social performance: Creating resources to help organizations excel
Authors: Dennis Bryan , D'Intino Robert S. , Houghton Jeffery D. , Neck Christopher P. , Boyles Trish 
Published: December 2007

AbstractThe most commonly employed theories of corporate social performance (CSP) tend to ignore firm‐level processes and structures as sources of competitive advantage. But, by taking a resource‐based view (RBV), and by enhancing a firm's capability to engage in socially responsible activities, it can potentially create its own competitive advantages. We examine four major components of CSP—community relations, the environment, diversity, and employee relations. And we show that the ability of a firm to develop its knowledge and skills—as well as policies and implementation plans and procedures—in each of these areas is a potential resource that may in fact provide competitive advantages and higher organizational performance, bringing benefits to both society and the firm.The community dimension evaluates the firm's performance in relationship to philanthropic giving and community support. The environmental aspect considers such firm stewardship activities as pollution prevention, global warming, and recycling. The diversity component measures CSP considering such factors as board member diversity and a firm's hiring, evaluation, training, and promotion policies concerning women and minorities. The employee relations dimension examines such socially responsible human resource practices as innovative employee involvement programs and profit sharing. Together, these capabilities can provide tangible and intangible resources that can provide the firm with competitive advantages. © 2008 Wiley Periodicals, Inc.
The Development of Proton Conducting Polymer Membranes for Fuel Cells Using Sulfonated Carbon Nanofibres
Authors: Barroso‐Bujans Fabienne , Verdejo Raquel , Arroyo Miguel , Lopez‐Gonzalez Maria del Mar , Riande Evaristo , Lopez‐Manchado Miguel Angel 
Published: December 2007

AbstractThis study describes a new strategy to improve the performance of PEMFCs by the addition of S/CNF. The presence of 2.08 vol.‐% S/CNF increased the proton conductivity of a S/EPDM by one order of magnitude, which made it comparable to that of Nafion® 117, and without creating an electronic path. Furthermore, the filled membranes showed improved thermal stability and mechanical properties.magnified image
Spastic paraplegia 15: Linkage and clinical description of three Tunisian families
Authors: Boukhris Amir , Feki Imed , Denis Elodie , Miladi Mohamed Imed , Brice Alexis , Mhiri Chokri , Stevanin Giovanni 
Published: December 2007

AbstractHereditary spastic paraplegias (HSP) are a clinically and genetically heterogeneous group of neurodegenerative disorders characterized by slowly progressive spasticity of the lower limbs. The locus designated spastic paraplegia 15 (SPG15), located in a 16‐Mb interval on chromosome 14q, is associated with a rare autosomal recessive complicated form of HSP known as Kjellin's syndrome. In this study, we describe three additional families, of Tunisian origin, linked to the SPG15 locus, one of which had a significant multipoint LOD score of 3.46. In accordance with previous reports, the phenotype of our patients consisted of early onset spastic paraparesis associated with mental impairment and severe progression. Retinal degeneration was not observed, however, but we extended the phenotype of this form to include peripheral neuropathy and white matter abnormalities on MRI. Interestingly, like retinal degeneration, thin corpus callosum is not a constant feature in this entity. © 2007 Movement Disorder Society
An analysis of substrate effects on transmission‐lines for millimeter‐wave CMOS RFIC applications
Authors: Chang Jin‐Fa , Lin Yo‐Sheng , Chen Chi‐Chen , Chen Chang‐Zhi , Huang Pen‐Li , Wang Tao , Lu Shey‐Shi 
Published: December 2007

AbstractA set of transmission lines (TLs) for millimeter‐wave (MMW) CMOS RFIC applications was implemented in a standard 0.18 μm CMOS technology and then postprocessed by CMOS‐compatible inductively‐coupled plasma (ICP) etching, which removed the silicon underneath the TLs completely. TL parameters such as characteristic impedance ZC, attenuation constant α, phase constant β, effective permittivity εeff, minimum noise figure (NFmin), parallel capacitance/conductance C/G, and series inductance/resistance L/R, as a function of frequency were extracted. It was found that α, εeff, NFmin, C, and G were greatly improved after silicon removal. The state‐of‐the‐art performances of the on‐chip TLs‐on‐air suggest that they are very suitable for application to realize ultralow‐noise MMW CMOS RFICs. Besides, the CMOS‐compatible backside ICP etching technique is very promising for MMW system‐on‐a‐chip applications. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 319–324, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23055
Design and fabrication of miniaturized loop dual‐band fractal antenna based on the silicon substrate
Authors: Guo Xinglong , Liu Lei , Ou'Yang Weixia , You Shuzhen , Lai Zongsheng 
Published: December 2007

AbstractMiniaturization techniques for antenna designs based on fractal geometries are of growing interest in wireless communications. This letter demonstrates miniature fractal antenna designed and fabricated on the high‐resistivity Si substrate. This antenna is used for SoC (system on the chip). The proposed concept also can be extended to linear antenna arrays or to more complex antenna structures with large improvements in antenna performance. To this end, the effectiveness of the approach is confirmed by simulated and experimental results. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 363–365, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23079
Characterization of artificial magnetic conductor strips for parallel plate planar antennas
Authors: de la Torre P. Padilla , Fernández J.M. , Sierra‐Castañer M. 
Published: December 2007

AbstractMetamaterial structures have unique properties in controlling the propagation of electromagnetic waves. In this work, we analyze the effect of artificial magnetic conductor (AMC) surface strips on the bottom face of an oversized parallel plate waveguide to enhance the wave guidance within it. The results using these configurations in a linear slot array antenna fed by a rectangular parallel plate waveguide are presented as an example of application. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 498–504, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23092
Quasi‐elliptic filter based on substrate integrated waveguide
Authors: Bian Lei , Guo Y. X. , Shi X. Q. 
Published: December 2007

AbstractIn this article, a 34‐GHz substrate integrated waveguide (SIW) quasi‐elliptic filter fabricated in PCB is presented. The filter consists of one SIW cavity and four coupling metallic circular post. It is found that the filter can deliver a simulated bandwidth of 600 MHz, centered at 34 GHz with an insertion loss of 1 dB, with two transmission zeros at each side of the passband. The good agreement between the simulated and measured results is presented at the end of this article. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 402–404, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23097
A novel catadioptric dielectric lens for microwave and terahertz applications
Authors: Banik Biddut K. , Vukusic Josip , Merkel Harald , Stake Jan 
Published: December 2007

AbstractA novel dielectric catadioptric lens, suitable for near‐field sensing and imaging, is presented. The focusing property and the far‐field pattern of the lens are investigated using a 3D full‐wave electromagnetic solver. Furthermore, the proposed catadioptric lens has been designed and fabricated from Delrin. Simulations and measurements of the far‐field at 5 GHz and return loss versus frequency using a Bow‐tie slot feeding antenna are presented. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 416–419, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23100
A discussion on the performance of impedance matched antenna system and considerations for a better performance
Authors: Kaya Adnan , Yesim Yüksel E. 
Published: December 2007

AbstractImpedance matching networks are used extensively in radio communications. In this study, π‐matching circuit has been used as a matching network. The return loss level of several impedance matched microstrip antennas are compared as a function of matching techniques. The π‐matching device is used to construct the antenna tuning units, which is only used to match the front module and the antenna. This circuit impedance region has been investigated analytically under the variable load condition. When the mismatch is occurred, the result is an increase in the energy consumption or transmission quality deterioration. In addition, the input module in antenna system could be damaged if reflection of the signal levels is excessively high. This is interesting application because antennas cannot be considered alone as component with changing electromagnetic properties. The rectangular microstrip antenna was designed at 2.5 GHz frequency by using microstrip feed line. Better return loss level which is −16.86 dB has been obtained for this antenna using π‐matching circuit. It is shown that theoretical, simulation, and laboratory results are good agreement. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 410–415, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23101
Study of a dielectric‐loaded folded monopole antenna at UHF band for DVB‐H terminals
Authors: Gao Y. , Kariyawasam R. , Chiau C. C. , Chen X. , Parini Clive G. 
Published: December 2007

AbstractThis article presents a study on a dielectric‐loaded folded monopole antenna operating at ultra high frequency band for Digital Video Broadcasting‐Handheld terminals. It is an optimization of the folded monopole antenna in our previous work. The proposed antenna has a 43% reduction in volume when compared with the previous design. Because of the ground plane independency of the antenna, the proposed antenna can be mounted on any type of ground plate, thus improving the adaptability to different terminal designs. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 487–490, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23111
Harmonics suppressed substrate‐integrated waveguide filter with integration of low‐pass filter
Authors: Yun Tae‐Soon , Nam Hee , Kim Jin‐Young , Lee Byoungje , Choi Jin‐Joo , Kim Ki‐Byoung , Ha Tae‐Jun , Lee Jong‐Chul 
Published: December 2007

AbstractIn this paper, the harmonics suppressed waveguide filter with SIW (substrate‐integrated waveguide) structure using inductive windows at satellite communication band is discussed. The SIW structure is realized by via‐holes and can be integrated with other circuits on the same substrate. The SIW filter has the insertion loss of 2.85 dB and return loss of 17.57 dB at the center frequency of 12 GHz. Also, the proposed SIW filter has the harmonics suppression under 20 dB until 30 GHz by inserted low‐pass filter (LPF). This harmonics suppressed SIW filter can be used in satellite communication systems. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 447–450, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23114
Antennas for a battery‐assisted RFID tag with thin and flexible film batteries
Authors: Yeo Junho , Moon Sang‐Gook , Jung Jae‐Young 
Published: December 2007

AbstractA design concept and some examples of antennas suitable for battery‐assisted radio frequency identification (RFID) tag with a thin and flexible film battery are presented. For the antenna design of this kind of a battery‐assisted RFID tag, a special caution is necessary considering the presence of a thin and flexible film battery. A very simple and easy way to design an antenna for such a tag is to place the film battery on some part of the antenna to avoid the influence or interference of it on the antenna performance. One reference antenna and two types of reduced‐size antennas are designed based on this concept, and their performance on communication distance with a reader is compared experimentally. It is demonstrated by measurement that the normal read range with continuous reading is around 4.5–4.9 m and the maximum read range is 6–6.2 m between the reader and the battery‐assisted RFID tags with three different antenna types. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 494–498, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23127
Design of a 3–10 GHz UWB CMOS T/R switch
Authors: Pao K.‐H , Hsu C.‐Y. , Chuang H.‐R. , Chen C.‐Y 
Published: December 2007

AbstractA 3–10 GHz broadband CMOS T/R Switch for ultra‐wideband (UWB) transceiver is proposed. This broadband CMOS transmit/receive (T/R) Switch is fabricated based on the 0.18 μm 1P6M standard CMOS process. On‐chip measurement of the CMOS T/R Switch is performed. The insertion loss of the proposed CMOS T/R Switch is about 3.1 ± 1.3 dB. The return losses at both input and output terminals are higher than 14 dB. It is also characterized with 25–34 dB isolation and 18–20 dBm input P1dB. The broadband CMOS T/R Switch shows highly linear phase and group delay of 20 ± 10 ps from 10 MHz to 15 GHz. It can be easily integrated with other CMOS RFICs to form on‐chip transceivers for various UWB applications. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 457–460, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23129
Solid‐state NMR analysis of the orientation and dynamics of epigallocatechin gallate, a green tea polyphenol, incorporated into lipid bilayers
Authors: Kajiya Katsuko , Kumazawa Shigenori , Naito Akira , Nakayama Tsutomu 
Published: December 2007

AbstractCatechins are the principle polyphenolic compounds in green tea; the four major compounds identified are epicatechin (EC), epigallocatechin (EGC), epicatechin gallate (ECg) and epigallocatechin gallate (EGCg). Tea catechins tend to attach externally to their targets, such as viral envelopes, cell membranes, or the surface of low‐density lipoproteins. In order to further our understanding of the molecular mobility of these compounds in cells, we examined the interaction of tea catechins with lipid membranes using solid‐state NMR techniques. Our previous work indicated that the EGCg molecule is incorporated into lipid bilayers in a unique orientation. However, the detailed configuration, orientation, and dynamics of EGCg in lipid bilayers have not been well‐characterized. Here, we investigated the orientation and dynamics of EGCg incorporated into multi‐lamellar vesicles (MLVs) and bicelles using solid‐state NMR spectroscopy. Copyright © 2007 John Wiley & Sons, Ltd.
Randomized, placebo‐controlled, double‐blind pilot trial of ramipril in McArdle's disease
Authors: Martinuzzi Andrea , Liava Alexandra , Trevisi Enrico , Frare Mara , Tonon Caterina , Malucelli Emil , Manners David , Kemp Graham J. , Testa Claudia , Barbiroli Bruno , Lodi Raffaele 
Published: December 2007

AbstractMcArdle's disease causes limitation in exercise capacity as well as disability, the severity of which has been associated with the angiotensin‐converting enzyme (ACE) insertion (I)/deletion (D) haplotype—patients with the genotype associated with higher ACE activity show the most severe phenotype. Modulation of ACE activity through the use of inhibitors may thus positively affect disease expression. In a double‐blind, randomized, placebo‐controlled trial, we assessed the efficacy of an ACE inhibitor (2.5 mg ramipril) in 8 patients with McArdle's disease. End‐points were changes in parameters of exercise physiology (cycloergometer and muscle 31P‐magnetic resonance spectroscopy), quality of life (QoL) according to the Short Form 36 (SF‐36), and disability according to the World Health Organization–Disability Assessment Scale II (WHO‐DAS II). Patients had lower QoL and higher disability than controls. Measures of exercise physiology were not changed by ramipril in the whole group, but treatment induced higher peak VO2 (P = 0.017) in ACE D/D patients, yet not in I/D patients. Treatment significantly improved disability (P < 0.05). McArdle's disease is a disabling condition affecting patients' QoL. Treatment with ramipril improves disability and modifies exercise physiology only in D/D patients, raising the possibility of a differential haplotype‐linked sensitivity to the treatment. Muscle Nerve, 2008