bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nanoelectromechanical switches for reconfigurable antennas
Authors: Cetiner Bedri A. , Biyikli Necmi , Yildirim Bahadir S. , Damgaci Yasin 
Published: November 2009

AbstractWe report on the full‐wave analyses of a frequency reconfigurable antenna integrated with metallic nanoelectromechanical system (NEMS) switches (length = 3 μm, width = 60 nm). The NEMS switch used in this work has the same architecture with low voltage, double‐arm cantilever‐type metallic DC‐contact microelectromechanical system (MEMS) switch recently developed in author's group. The microfabrication and characterization of the MEMS switch have also been given in this article. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 64–69, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24833
Effect of inter‐element spacings variation on the performance of linear grounded frequency selective surface arrays in W‐band
Authors: Islam S. , Stiens J. , Poesen G. , Jaeger I. , De Tandt C. , Ranson W. , De Raedt W. , Vounckx R. 
Published: November 2009

AbstractThis article examines the issue of extending the inter‐element spacing between slots of equally‐spaced linear grounded frequency selective surface (FSS) arrays with spacing beyond half a wavelength in W‐band (75–110 GHz). We present the design, processing, and testing of W‐band grounded FSS arrays with different inter‐element spacings along transverse electric (TE) and transverse magnetic (TM) field directions separately. The comparison of periodicity changing effects along TE and TM field directions has been reported. The inter‐element spacing versus phase curves demonstrate that in some extent the inter‐element spacing can be a phase optimization parameter for complex array design. We fabricated the corresponding FSS arrays on quartz substrate with photolithographic etching technique, and characterized the vector S‐parameters with a free space MVNA. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 155–160, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24848
A 0.6‐V low‐power armstrong VCO in 0.18 μm CMOS
Authors: Liu Cheng‐Chen , Jang Sheng‐Lyang , Chen Jhao‐Jhang , Juang Miin‐Horng 
Published: November 2009

AbstractA low‐power differential voltage‐controlled oscillator (VCO) is proposed and implemented in a 0.18 μm CMOS 1P6M process. It consists of two single‐ended Armstrong oscillators via cross‐coupled transistors to obtain a differential output. At the supply voltage of 0.6 V, the output phase noise of the differential VCO is −120.02 dBc/Hz at 1 MHz offset frequency from the carrier frequency of 3.85 GHz and the figure of merit is −188.5 dBc/Hz. Total VCO core power consumption is 2.1 mW. Tuning range is about 550 MHz, from 3.81 to 4.36 GHz, whereas the control voltage was tuned from 0 to 2.0 V. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 116–119, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24864
Design of an FIR filter for the displacement reconstruction using measured acceleration in low‐frequency dominant structures
Authors: Lee Hae Sung , Hong Yun Hwa , Park Hyun Woo 
Published: November 2009

AbstractThis paper presents a new class of displacement reconstruction scheme using only acceleration measured from a structure. For a given set of acceleration data, the reconstruction problem is formulated as a boundary value problem in which the acceleration is approximated by the second‐order central finite difference of displacement. The displacement is reconstructed by minimizing the least‐squared errors between measured and approximated acceleration within a finite time interval. An overlapping time window is introduced to improve the accuracy of the reconstructed displacement. The displacement reconstruction problem becomes ill‐posed because the boundary conditions at both ends of each time window are not known a priori. Furthermore, random noise in measured acceleration causes physically inadmissible errors in the reconstructed displacement. A Tikhonov regularization scheme is adopted to alleviate the ill‐posedness. It is shown that the proposed method is equivalent to an FIR filter designed in the time domain. The fundamental characteristics of the proposed method are presented in the frequency domain using the transfer function and the accuracy function. The validity of the proposed method is demonstrated by a numerical example, a laboratory experiment and a field test. Copyright © 2009 John Wiley & Sons, Ltd.
Interest and durability of multilayers: from model films to complex films
Authors: Garnier Géraldine , Marouani Sofiène , Yrieix Bernard , Pompeo Claude , Chauvois Michel , Flandin Lionel , Brechet Yves 
Published: November 2009

AbstractIn a first part, this paper focuses on the interest of using a multilayer for vacuum insulation panels envelope. It is shown that piling up layers of metallized poly(ethylene terephthalate) does not seem to improve the initial barrier performance. In parallel, a permeation model to predict barrier properties of multilayer films was developed and validated with experimental results. In a second part, durability of a multilayer composite was investigated using accelerated hydrothermal ageing tests. It is shown that physical properties and in particular barrier properties decrease with ageing time. Polyurethane layer used as adhesive system in multilayer films is responsible for complete degradation of aluminum layer after 6 ageing months at 70°C – 90% relative humidity. Copyright © 2009 John Wiley & Sons, Ltd.
Electrospun poly(L‐lactic acid)/hydroxyapatite composite fibrous scaffolds for bone tissue engineering
Authors: Chuenjitkuntaworn Boontharika , Supaphol Pitt , Pavasant Prasit , Damrongsri Damrong 
Published: November 2009

AbstractPoly(L‐lactic acid) (PLLA) is one of the most studied synthetic biodegradable polymeric materials as a bone graft substitute. Taking into account the osteoconductive property of hydroxyapatite (HAp), we prepared fibrous matrices of PLLA without and with HAp particles in amounts of 0.25 or 0.50% (w/v, based on the volume of the base 15% w/v PLLA solution in 70:30 v/v dichloromethane/tetrahydrofuran). These fibrous matrices were assessed for their potential as substrates for bone cell culture. The presence of HAp in the composite fibre mats was confirmed using energy dispersive X‐ray spectroscopy mapping. The average diameters of both neat PLLA and PLLA/HAp fibres, as determined using scanning electron microscopy, ranged between 2.3 and 3.5 µm, with the average spacing between adjacent fibres ranging between 5.7 and 8.5 µm. The porosity of these fibrous membranes was high (ca 97–98%). A direct cytotoxicity evaluation with L929 mouse fibroblasts indicated that the neat PLLA fibre mats released no substance at a level that was toxic to the cells. The presence of HAp particles at 0.50% w/v in the PLLA fibrous scaffolds not only promoted the attachment and the proliferation of MC3T3‐E1 mouse pre‐osteoblastic cells, but also increased the expression of osteocalcin mRNA and the extent of mineralization after the cells had been cultured on the scaffolds for 14 and 21 days, respectively. The results obtained suggested that the PLLA/HAp fibre mats could be materials of choice for bone tissue engineering. Copyright © 2009 Society of Chemical Industry
Growth in children with cystic fibrosis‐related diabetes
Authors: Cheung M.S. , Bridges N.A. , Prasad S.A. , Francis J. , Carr S.B. , Suri R. , Balfour‐Lynn I.M. 
Published: November 2009

AbstractCystic fibrosis‐related diabetes (CFRD) is associated with a shortened life expectancy and greater deterioration in lung function than in CF patients with normal glucose metabolism. There are few published data on how CFRD affects growth in childhood. We carried out a retrospective case controlled study of growth and lung function in 34 children with CFRD attending three specialist centers in London. We found that for the 2 years leading to CFRD diagnosis (at a mean age of 13.1 years), the mean height velocity was significantly less compared to controls: 4.9 (standard deviation—SD 1.6) cm/year vs. 6.0 (SD 1.9) cm/year (P = 0.005). For the 2 years following diagnosis, height velocity remained significantly lower (3.4 (SD 2.2) cm/year vs. 4.4 (SD 2.2) cm/year, P = 0.02). Mean FEV1 was reduced prior to diagnosis and at diagnosis, but was similar to controls 2 years after diagnosis. This study highlights the compromise in height velocity and lung function that occurs prior to diagnosis of CFRD in children with CF, and a reduction in height velocity should be considered an indicator of impaired glucose metabolism. It would be useful to know whether early treatment with insulin can help promote catch up growth. Pediatr Pulmonol. 2009; 44:1223–1225. © 2009 Wiley‐Liss, Inc.
Random and targeted gene integrations through the control of non‐homologous end joining in the yeast Kluyveromyces marxianus
Authors: Abdel‐Banat Babiker M. A. , Nonklang Sanom , Hoshida Hisashi , Akada Rinji 
Published: November 2009

AbstractKluyveromyces marxianus DMKU3‐1042 is a thermotolerant yeast strain suitable for high‐temperature ethanol fermentation and genetic engineering with linear DNA. We have developed a highly efficient random gene integration method with a frequency that exceeds 2.5 × 106 transformants/µg linear DNA, a figure comparable to what is observed with autonomously replicating plasmid transformation in Saccharomyces cerevisiae. To establish the mechanism of random integration in DMKU3‐1042, we identified and deleted the K. marxianus KU70 gene, which is known to be involved in the non‐homologous end‐joining (NHEJ) pathway. In yeast lacking KU70, high‐frequency non‐homologous gene integration was abolished and the Kmku70 mutants showed 82–95% homologous gene targeting efficiencies using homologous sequences of 40–1000 bp. These results indicate that the highly efficient NHEJ pathway can be utilized with random gene disruption techniques such as transposon mutagenesis and plasmid‐free gene manipulations in K. marxianus. Copyright © 2009 John Wiley & Sons, Ltd.
Surgical design and outcome of duodenum‐preserving pancreatic head resection for benign or low‐grade malignant tumors
Authors: Horiguchi Akihiko , Miyakawa Shuichi , Ishihara Shin , Ito Masahiro , Asano Yukio , Furusawa Koichi , Shimizu Tomohiro , Yamamoto Toshiyuki 
Published: November 2009

AbstractTo apply duodenum‐preserving pancreatic head resection (DPPHR) as radical procedure for benign or low‐grade malignant tumors, it needs the reconciliation of complete pancreatic head resection and preservation of the bile duct and peripancreatic vessels. Several modifications have been introduced and applied to remove these lesions, however, the techniques have not been made clear in the management of the peripancreatic vessels and the bile duct. The long‐term outcomes of the DPPHR have been reported as extremely rare in comparison with pylorus preserving pancreatoduodenectomy (PPPD) in these pancreatic head tumors. The angiograms by multi‐detector row CT (MD‐CT) can be reconstructed more physiologically than selective angiography. The anterior arcade is predominant in 43% of 64 patients. Therefore, we modified the DPPHR to include a complete resection of the pancreatic head and the preservation of both anterior and posterior arterial arcades. The bile duct is covered by the pancreatic parenchyma in various ways. The techniques of the preservation of the bile duct are also introduced. We performed 21 DPPHRs and 19 PPPDs in the patients with benign or low‐grade malignant pancreatic head tumor. There was no significant difference in operative factors. The postoperative death was one patient in PPPD, but none in DPPHR. The postoperative complications of PPPD were more often than that of DPPHR. There is no postoperative recurrence in DPPHR in the follow‐up period from 2 to 216 months. Both exocrine and endocrine function and the long‐term results following DPPHR were superior to those following PPPD. The DPPHR should be favored over the PPPD in benign or low‐grade malignant tumors of the head of the pancreas if there is no compromise with oncologic radicality.
Ultraviolet Laser Action in Ferromagnetic Zn1−x
Fe
x
O Nanoneedles
Authors: Yang HY , Yu SF , Lau SP , Herng TS , Tanemura M 
Published: October 2009

Abstract
Fe-doped ZnO nanoneedles (NDs) were fabricated by an Ar+ ion sputtering technique operated at room temperature. The as-grown samples show both ferromagnetic and lasing properties. The saturated magnetization moment was measured from 0.307 to 0.659 emu cm−3 at the field of 10 kOe with various Fe concentrations. Intense ultraviolet random lasing emission was observed from Zn1 − x
Fe
x
O NDs at room temperature. The X-ray photoelectron spectroscopy result reveals that the doped Fe atoms occupy the Zn sites and lead to a decrease in oxygen deficiency.
Prevention of substance use among adolescents through social and emotional training in school: A latent‐class analysis of a five‐year intervention in Sweden
Authors: Kimber Birgitta , Sandell Rolf 
Published: October 2009

ABSTRACTThe study considers the impact of a program for social and emotional learning in Swedish schools on use of drugs, volatile substances, alcohol and tobacco. The program was evaluated in an effectiveness study. Intervention students were compared longitudinally with non‐intervention students using nonparametric latent class analysis to identify subgroups of students with similar use levels and trajectories. Statistically significant intervention‐by‐duration interactions, with medium to large effect sizes to the advantage of the SET students were found for all substances in one or more, but not all, of the latent classes. Favorable trajectories were found for non‐users/light users of drugs, moderate sniffers, non‐users/light users of alcohol, and occasional smokers. Only among heavy smokers was there a possible iatrogenic effect of SET. Such programs, given a duration of two years or more, may dampen increases in use with age and discourage early debut, although they are not specifically targeted at use itself.
Cryotherapy for HPV clearance in women with biopsy‐confirmed cervical low‐grade squamous intraepithelial lesions
Authors: Chumworathayi Bandit , Thinkhamrop Jadsada , Blumenthal Paul D. , Thinkhamrop Bandit , Pientong Chamsai , Ekalaksananan Tipaya 
Published: November 2009

AbstractObjectiveTo compare the clearance rate of HPV infection among women aged older than 30 years with biopsy‐confirmed cervical low‐grade squamous intraepithelial lesions (LSIL) 1 year after cryotherapy with the spontaneous clearance rate (observation).MethodHPV DNA typing by polymerase chain reaction and reverse line blot hybridization were used to identify 14 high‐risk types and 23 low‐risk types. HPV DNA sequencing was also used for other types.ResultBetween December 2007 and March 2009, 100 women were recruited to the study and 60 cases had positive results on HPV testing. Twenty‐nine patients were randomly allocated to the cryotherapy group and 31 to the observation group. At 1 year, 89.7% (26/29; 95% CI, 78.6–100%) of the cryotherapy group and 90.3% (28/31; 95% CI, 79.9–100%) of the observation group had negative results on HPV testing (0.6% difference; 95% CI, –15.8 to 14.6%, P = 0.94).ConclusionCryotherapy failed to increase the clearance of prevalent HPV infections among women with LSIL, although in both arms the clearance rates were above 80%. However, in coupling with visual inspection with acetic acid as a single visit approach, its effect on prevention of HSIL and cervical cancer is still promising. Therefore, cryotherapy should not be withdrawn from such programs. (ClinicalTrials.gov Identifier: NCT00566579).
Governing controversial science: Lessons from stem cell research
Authors: Mintrom Michael , Bollard Rebecca 
Published: October 2009

AbstractDevelopments in genomic science and biotechnology are creating new governance challenges concerning funding, oversight, and regulation of the underlying science and its applications. Among forms of genomics and biotechnology, human stem cell research has been one of the most controversial. It holds great promise for the development of medical therapies, but the link between human reproduction and research on embryonic stem cells has fuelled serious opposition. We contend that good policy design can reduce tensions around the advancement of controversial science and technologies flowing from it. This article examines issues in the governance of human stem cell research using evidence from California. Four lessons are drawn for the effective governance of other areas of human genomics and biotechnology. They are (1) isolate structural design from controversy; (2) make room for laypeople in the governance structures; (3) promote transparency, minimize secrecy; and (4) create opportunities for learning and innovation.
Global distribution of cyanobacterial ecotypes in the cold biosphere
Authors: Jungblut Anne D , Lovejoy Connie , Vincent Warwick F 
Published: November 2009

Abstract
Perennially cold habitats are diminishing as a result of climate change; however, little is known of the diversity or biogeography of microbes that thrive in such environments. Here we use targeted 16S rRNA gene surveys to evaluate the global affinities of cold-dwelling cyanobacteria from lake, stream and ice communities living at the northern limit of High Arctic Canada. Pigment signature analysis by HPLC confirmed the dominance of cyanobacteria in the phototrophic communities of these High Arctic microbial mats, with associated populations of chlorophytes and chromophytes. Microscopic analysis of the cyanobacteria revealed a diverse assemblage of morphospecies grouping into orders Oscillatoriales, Nostocales and Chroococcales. The 16S rRNA gene sequences from six clone libraries grouped into a total of 24 ribotypes, with a diversity in each mat ranging from five ribotypes in ice-based communities to 14 in land-based pond communities. However, no significant differences in composition were observed between these two microbial mat systems. Based on clone-library and phylogenetic analysis, several of the High Arctic ribotypes were found to be &gt;99% similar to Antarctic and alpine sequences, including to taxa previously considered endemic to Antarctica. Among the latter, one High Arctic sequence was found 99.8% similar to Leptolyngbya antarctica sequenced from the Larsemann Hills, Antarctica. More than 68% of all identified ribotypes at each site matched only cyanobacterial sequences from perennially cold terrestrial ecosystems, and were &lt;97.5% similar to sequences from warmer environments. These results imply the global distribution of low-temperature cyanobacterial ecotypes throughout the cold terrestrial biosphere.
9aaTADs mimic DNA to interact with a pseudo-DNA Binding Domain KIX of Med15 (Molecular Chameleons)
Authors: piskacek martin 
Published: November 2009

AbstractThe KIX-domain of Gal11/MED15 was shown to interact with short transactivation domain of Pdr1 and Oaf1 (12 and 9 amino acids respectively) annotated to 9aaTAD family. Reported NMR data revealed a surprising sequence similarity of KIX domain and basic-leucine zipper (bZIP).
Predictive rule inference for epistatic interaction detection in genome-wide association studies
Authors: Wan Xiang , Yang Can , Yang Qiang , Xue Hong , Tang Nelson L.S. , Yu Weichuan 
Published: October 2009

Abstract
Motivation: Under the current era of genome-wide association study (GWAS), finding epistatic interactions in the large volume of SNP data is a challenging and unsolved issue. Few of previous studies could handle genome-wide data due to the difficulties in searching the combinatorially explosive search space and statistically evaluating high-order epistatic interactions given the limited number of samples. In this work, we propose a novel learning approach (SNPRuler) based on the predictive rule inference to find disease-associated epistatic interactions.
Results: Our extensive experiments on both simulated data and real genome-wide data from Wellcome Trust Case Control Consortium (WTCCC) show that SNPRuler significantly outperforms its recent competitor. To our knowledge, SNPRuler is the first method that guarantees to find the epistatic interactions without exhaustive search. Our results indicate that finding epistatic interactions in GWAS is computationally attainable in practice.
Availability: http://bioinformatics.ust.hk/SNPRuler.zip
Contact: eexiangw@ust.hk, eeyu@ust.hk
Supplementary information: Supplementary data are available at Bioinformatics online.
Fishing simulation experiments for predicting the effects of purse-seine capture on sardine (Sardina pilchardus)
Authors: Marçalo Ana , Marques Tiago A. , Araújo João , Pousão-Ferreira Pedro , Erzini Karim , Stratoudakis Yorgos 
Published: November 2009

AbstractMarçalo, A., Marques, T. A., Araújo, J., Pousão-Ferreira, P., Erzini, K., and Stratoudakis, Y. 2010. Fishing simulation experiments for predicting the effects of purse-seine capture on sardine (Sardina pilchardus). – ICES Journal of Marine Science, 67: 334–344. To study the impact of purse-seine fishing on deliberately released sardine, two laboratory experiments were performed to explore the effect of net confinement for 10, 20, 40, and 60 min at 18 and 23°C. A third experiment considered two levels of fish density while confined for 20 and 40 min at 16°C. Analysis of cortisol and haematocrit demonstrated that stress immediately after simulated fishing was milder than in commercial fishing and did not correlate with observed delayed mortality. Scale loss was related to the probability of dying (mean values of 16.3 and 2% for dead fish and survivors, respectively), and fin erosion was a long-term stress response observed in both dead and surviving fish. Time of confinement was an important stressor, with survival rates decreasing significantly with increasing periods in the net, and temperature having an additional negative effect. Density effects were less conclusive, but there was some indication that survival correlated with biological condition (heavier fish were more likely to survive). It seems that delayed mortality after release can be substantial, although death is not certain and appropriately modified fishing operations and favourable environmental conditions may enhance the probability of sardine survival.