bluuebunny/crossref_metadata_2025_split huggingface dataset:
A scanning electron microscopic study on the cephalic cuticular sensillae of different larval stages of Antheraea assamensis, an indigenous silkworm species of Northeast India
Authors: Dey Sudip , Singh Surendra , Chakraborty Rahul , Hooroo Rupa Nylla Kynta , Choudhury Sudipto 
Published: May 2009

AbstractScanning electron microscopy revealed the presence of a number of cuticular sensillae on the head of different larval stages of the “Muga” silk moth, Antheraea assamensis. These include four types of sensilla trichodea, bead‐like folded sensilla, two types of sensilla basiconica, and sensory pegs. The study seems to be the first attempt in describing the morphology and distribution pattern of the cephalic cuticular sensillae of different larval stages of the silk moth Antheraea assamensis, an indigenous species of Northeast India. The possible significance of the sensillae in searching behavior of the larval stages during feeding is discussed with the help of available literature. Microsc. Res. Tech., 2009. © 2009 Wiley‐Liss, Inc.
Visualization of wound periderm and hyphal profiles in pine stems inoculated with the pitch canker fungus Fusarium circinatum
Authors: Kim Ki Woo , Lee In Jung , Thoungchaleun Vilakon , Kim Chang Soo , Lee Don Koo , Park Eun Woo 
Published: May 2009

AbstractPostpenetration behavior of Fusarium
circinatum in stems of pine species was investigated with light and transmission electron microscopy. Two‐year‐old stems of Pinus rigida and P. densiflora were wound‐inoculated with the fungal conidial suspension and subjected to 25°C for up to 30 days. It was common to observe the formation of wound periderm on each pine species, recovering wounded sites with newly formed tissues. The outermost thick layer of wound periderm was pink to red colored with the phloroglucinol‐EtOH staining, indicating heavy deposition of lignin in wound periderm. The cork layers in the wound periderm of the two pine species consisted of cells that were mostly devoid of cellular contents in cytoplasm. The cork cells showed convoluted cell walls with different electron density (lamellations), which was seemingly more prevalent in P. densiflora than P. rigida. Hyphae of F. circinatum appeared normal with typical eucaryotic cytoplasm in P. rigida on ultrathin sections. Meanwhile, hyphae in P. densiflora were found to possess highly vacuolated cytoplasm, implying hyphal weakening and disintegration. Hyphal cytoplasm appeared to be a thin layer between the vacuole and the plasma membrane surrounded by cell wall. In addition, intrahyphal hyphae and concentric bodies were observed in hyphal cytoplasm. These results suggest that the architecture of wound periderm may be responsible for different responses of pine species to the invasion of F. circinatum. Microsc. Res. Tech., 2009. © 2009 Wiley‐Liss, Inc.
Predictors of ischemic stroke after hip operation: A population‐based study
Authors: Popa Alina S. , Rabinstein Alejandro A. , Huddleston Paul M. , Larson Dirk R. , Gullerud Rachel E. , Huddleston Jeanne M. 
Published: May 2009

AbstractBACKGROUND:Hip operation (total hip arthroplasty [THA] or fracture repair) is the most common noncardiac surgical procedure performed in patients age 65 years and older.OBJECTIVE:To determine the predictors of ischemic stroke in patients who have undergone hip operation.DESIGN:Population‐based historical cohort study, in which postoperative ischemic strokes were identified from medical record review for stroke diagnostic codes and brain imaging results and were confirmed by physician review.SETTING:Tertiary care center in Olmsted County, Minnesota.PATIENTS:Residents of Olmsted County who underwent hip surgical procedure.MEASUREMENTS:Incidence of ischemic stroke within 1 year of hip operation.RESULTS:In total, 1606 patients underwent 1886 hip procedures from 1988 through 2002 and were observed for ischemic stroke for 1 year after their procedure. Sixty‐seven ischemic strokes were identified. The rate of stroke at 1 year after hip operation was 3.9%. In univariate analysis, history of atrial fibrillation (hazard ratio [HR], 2.16; P = 0.005), hip fracture repair vs. total hip arthroplasty (HR, 3.80; P < 0.001), age 75 years or older (HR, 2.20; P = 0.02), aspirin use (HR, 1.8; P = 0.01), and history of previous stroke (HR, 4.18; P < 0.001) were significantly associated with increased risk of stroke. In multivariable analysis, history of stroke (HR, 3.27; P < 0.001) and hip fracture repair (HR, 2.74; P = 0.004) were strong predictors of postoperative stroke.CONCLUSIONS:This population‐based historical cohort of patients with hip operation had a 3.9% cumulative probability of ischemic stroke over the first postoperative year. Hip fracture repair and history of stroke were the strongest predictors of this complication. Journal of Hospital Medicine 2009;4:298–303. © 2009 Society of Hospital Medicine.
Identification of germinal disk region derived genes potentially involved in hen fertility
Authors: Elis Sebastien , Blesbois Elisabeth , Couty Isabelle , Balzergue Sandrine , Martin‐Magniette Marie‐Laure , Batellier Florence , Govoroun Marina S. 
Published: May 2009

AbstractDespite the regular decrease in fertility observed in hens, especially in “meat” lines, little is known about genes affecting fertility. We used the Affymetrix microarray to search for oocyte genes whose expression would vary in relation to fertility rate in both “laying” and “meat” line hens. We focused on oocyte genes because several of them have been found to be involved in fertility in other species. Based on microarray analysis, 54 and 84 genes were differentially expressed between germinal disc regions (GDR) of F1 maturation stage oocytes from hens exhibiting either high (100%) or low (from 22% to 80%) fertility rate from laying and meat lines respectively. Most of these differentially expressed genes were distributed between “laying” and “meat” lines indicating that mechanisms involved in the decrease in fertility rates in these two cases were independent. Real time RT‐PCR performed on the same samples which were used for microarray confirmed in several cases differences in gene expression levels detected by microarray. Moreover the correlations between gene expression levels and fertility rates were evaluated for the 10 most interesting genes at different stages of follicular maturation and early embryo development on individual GDR samples from hens exhibiting different fertility rates. In total, we identified five genes whose expression levels correlated with fertility rate in accordance with findings of microarray analysis and real time RT‐PCR: VWC2, CR407412, TAPA, FGL2, and TRAP6. The biological significance of these genes sheds light on potential mechanisms influencing fertility and could provide candidates for fertility markers in the hen. Mol. Reprod. Dev. 76: 1043–1055, 2009. © 2009 Wiley‐Liss, Inc.
Flow cytometric determination of Src phosphorylation in pediatric patients treated with dasatinib
Authors: Guerrouahen Bella S. , Wieder Eric , Blanchard Elisabeth G. , Lee Francis Y. , Aplenc Richard , Corey Seth J. 
Published: May 2009

AbstractTyrosine kinase inhibitors, such as imatinib, have dramatically improved the outcomes for patients with selected cancers. For imatinib, western blotting of phospho‐CrkL was an insensitive, indirect, and descriptive method to determine drug efficacy. Greater use of targeted therapies should involve more quantitative evaluation of the target's dose‐inhibition. The Src/Abl kinase inhibitor dasatinib has recently been approved for use in Ph+ leukemias after failure with imatinib. Src family kinases (SFK) also play a critical role in nonhematologic cancers. We have developed a flow cytometric assay to measure SFK autophosphorylation levels in blood mononuclear cells and observed a direct correlation between its inhibition and patient dosage. This method provides a sensitive, quick, and quantitative tool to assess drug efficacy. Pediatr Blood Cancer 2009;53:1132–1135. © 2009 Wiley‐Liss, Inc.
Pegfilgrastim for prevention of chemotherapy‐associated neutropenia in pediatric patients with solid tumors
Authors: Borinstein Scott C. , Pollard Jessica , Winter Laura , Hawkins Douglas S. 
Published: May 2009

AbstractBackgroundPegfilgrastim has similar efficacy to filgrastim in adults, but studies in pediatrics are limited. We report our institutional experience with pegfilgrastim following dose intensive chemotherapy for solid tumors.ProcedureWe evaluated the initial four courses of myelosuppressive chemotherapy for 47 patients (total 176 courses) diagnosed between 1/1/07 and 2/6/08 who received chemotherapy with pegfilgrastim support (100 mcg/kg; 6 mg maximum dose) in this retrospective review. We collected demographic data, treatment characteristics, frequency of severe neutropenia (absolute neutrophil count (ANC) <200/mm3), duration of neutropenia, and frequency of neutropenic fever.ResultsThe median age of treated patients was 13 years (range 0.17–23 years) and the median weight was 50.8 kg (range 4–107 kg), including 16 (34%) <20 kg, and 22 (47%) <45 kg. Primary diagnoses included osteosarcoma, Ewing sarcoma, rhabdomyosarcoma, soft tissue sarcoma, neuroblastoma, Hodgkin disease, and other solid tumors. No significant adverse events secondary to pegfilgrastim were noted. Severe neutropenia occurred in 57% of courses. The median duration of severe neutropenia was 1 day (range 0–11 days). Febrile neutropenia occurred in 28% of courses. Eight patients were treated with interval‐compressed (every 14 days) sarcoma chemotherapy. Of the 30‐interval compressed courses, the median duration per course was 14 days (range 14–18 days).ConclusionsPegfilgrastim following dose intensive chemotherapy for solid tumors is feasible in children, including those <45 kg. The frequency and duration of severe neutropenia, as well as incidence of febrile neutropenia, were similar to filgrastim historic data. Pediatr Blood Cancer 2009;53:375–378. © 2009 Wiley‐Liss, Inc.
A novel amide and imide copolymer as matrix resin for UV photoresist
Authors: Liu Jianguo , Li Ping , Liu Heping , Zheng Jiashen 
Published: May 2009

AbstractA novel amide and imide copolymer, poly(N‐phenylmethacrylamide‐co‐N‐(p‐hydroxyphenyl)maleimide) was synthesized for the matrix resin of ultraviolet (UV) photoresist. Elemental analysis and self‐polymerization experiment verified that this copolymer was very close to 1:1 (molar ratio) in composition and was predominately alternating. It was able to dissolve in various organic solvents and form uniform curing film when spin‐coating. Its differential scanning calorimetry and thermogravimetry analysis test showed good thermal stability and its glass transition temperature (Tg) was about 280°C. Photolithographic experiment indicated that the UV photoresist formulated with this copolymer as matrix resin was achieved the resolution of about 5 μm, the contrast of 3.001, and the sensitivity of 32 mJ/cm2. With good plasma etching resistance, the photoresist studied was able to bear 250°C for 30 min without thermal deformation during the thermal resistance test. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers
Single‐walled carbon nanotube/poly(methyl methacrylate) composites for electromagnetic interference shielding
Authors: Das Narayan Ch. , Liu Yayong , Yang Kaikun , Peng Weiqun , Maiti Spandan , Wang Howard 
Published: May 2009

AbstractSingle‐walled carbon nanotube (SWNT)/poly(methyl methacrylate) (PMMA) composites were prepared using coagulation method. The electrical conductivity and the electromagnetic interference (EMI) shielding of SWNT/PMMA composites over the X‐band (8–12 GHz) and the microwave (200–2000 MHz) frequency range have been investigated. The electrical conductivity of composites increases with SWNT loading by 13 orders of magnitude, from 10−15 to 10−2 Ω−1 cm−1 with a percolation threshold of about 3 wt% SWNTs. The effect of the sample thickness on the shielding effectiveness has been studied, and correlated to the electrical conductivity of composites. The data suggest that SWNT/PMMA composites containing higher SWNT loading (above 10 wt%) be useful for EMI shielding and those with lower SWNT loading be useful for electrostatic charge dissipation. The dominant shielding mechanism of SWNT/PMMA composites was also discussed. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers
Influence of clay and predispersion method on the structure and properties of polystyrene (PS)‐clay nanocomposites
Authors: Yang Jintao , Fan Hong , Bu Zhiyang , Li Bo‐Geng 
Published: May 2009

AbstractTo prepare the polystyrene (PS)‐clay nanocomposites via an in situ emulsion polymerization, a clay predispersion method, i.e. dispersing the organic clay in the emulsifier solution by the assistance of ultrasonic, was proposed in this study. The conventional method, predispersing the organic clay into the monomer, was also presented for the comparison. The morphology analysis based on the X‐ray Deflection (XRD) and Transmission Electronic Microscopy (TEM) results suggested that the more uniform clay dispersion in the final nanocomposites could be achieved through the new method. The inorganic clay (Na‐MMT) and two organic clays (C18‐MMT and VC18‐MMT) synthesized by exchanging inorganic cations with the trimethyloctadecyl ammonium chloride (OTAC) and the vinylbenzyldimethyloctadecyl ammoniun chloride (VOAC) were chosen to investigate the influence of the clay surface modification on the properties of nanocomposites. The Dynamic Mechanical Analysis (DMA) results showed the storage modulus G′s of the nanocomposites had different enhancements over that of the pure PS, especially when the temperature approached the glass transition temperature (Tg). The Tgs of the nanocomposites, however, varied with the microstructure and the interactions between the polymer and the clay layers. The Na‐MMT and VC18‐MMT increased the Tg, while the Tgs of PS/C18‐MMT nanocomposites were slightly lower than that of the pure PS. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers
Voluntary exposure of some western‐hemisphere snake and lizard species to ultraviolet‐B radiation in the field: how much ultraviolet‐B should a lizard or snake receive in captivity?
Authors: Ferguson Gary W. , Brinker Andrew M. , Gehrmann William H. , Bucklin Stacey E. , Baines Frances M. , Mackin Steve J. 
Published: May 2009

AbstractStudies of voluntary exposure to ultraviolet‐B (UVB) radiation from the sun in the field were conducted in the southern US and Jamaica for 15 species of lizards and snakes occupying various habitats. Species were sorted into four zones of UVB exposure ranging from a median UV index of 0.35 for zone 1 to 3.1 for zone 4. Guidelines for UVB exposure in captivity of these and species occupying similar light environments are presented. Data for most species were collected during mid‐day during the spring breeding season, which appeared to be the time of maximum exposure. For two species of Sceloporus studied more intensively there was significant variation of exposure among times of the day and among seasons. So, all‐day studies over the entire active season are necessary to fully understand the pattern of natural exposure for a particular diurnal species. Environmental and body temperature and thermoregulation as well as UVB/vitamin D photoregulation influences exposure to UVB. Regressions allowing the inter‐conversion of readings among some meters with different detector sensitivities are presented. Readings of natural sunlight predict the same photobiosynthetic potential for vitamin D as the same reading from artificial sources whose wavelength distribution within the UVB band of the source is comparable to that of sunlight. Research approaches to further increase our understanding of vitamin D and UVB use and requirements for squamate reptiles in captivity are outlined. Zoo Biol 29:317–334, 2010. © 2009 Wiley‐Liss, Inc.
Electronic Switch in the Carbon-Centered [Re12CS17(CN)6]n−Nanocluster
Authors: Gabuda SP , Kozlova SG , Mironov Yu V , Fedorov VE 
Published: May 2009

Abstract
An abrupt change in internuclear Re–Re distances between {Re6} subunits in the carbon-centered [Re12μ6-CS17(CN)6]
n−complexes caused by the change of the oxidation state (n = 6, 8) is first theoretically shown to be possibly controlled by an external electric field.13C NMR signal is shown to change over ~400 ppm (~37G) for μ6-C atom together withn. Thereby, the metal cluster [Re12μ6-CS17(CN)6]
n−can be considered as a perspective model of a molecular switch.
In Situ Mineralization of Magnetite Nanoparticles in Chitosan Hydrogel
Authors: Wang Yongliang , Li Baoqiang , Zhou Yu , Jia Dechang 
Published: May 2009

Abstract
Based on chelation effect between iron ions and amino groups of chitosan, in situ mineralization of magnetite nanoparticles in chitosan hydrogel under ambient conditions was proposed. The chelation effect between iron ions and amino groups in CS–Fe complex, which led to that chitosan hydrogel exerted a crucial control on the magnetite mineralization, was proved by X-ray photoelectron spectrum. The composition, morphology and size of the mineralized magnetite nanoparticles were characterized by X-ray diffraction, Raman spectroscopy, transmission electron microscopy and thermal gravity. The mineralized nanoparticles were nonstoichiometric magnetite with a unit formula of Fe2.85O4and coated by a thin layer of chitosan. The mineralized magnetite nanoparticles with mean diameter of 13 nm dispersed in chitosan hydrogel uniformly. Magnetization measurement indicated that superparamagnetism behavior was exhibited. These magnetite nanoparticles mineralized in chitosan hydrogel have potential applications in the field of biotechnology. Moreover, this method can also be used to synthesize other kinds of inorganic nanoparticles, such as ZnO, Fe2O3and hydroxyapatite.
Social contract theory and the ethics of deception in consumer research
Authors: Smith N. Craig , Kimmel Allan J. , Klein Jill Gabrielle 
Published: May 2009

AbstractDeception of research participants is a pervasive ethical issue in experimental consumer research. Content analyses find as many as three‐fourths of published human participant studies in our field involved some form of deception, almost all of which employed experimental methodologies. However, researchers have little guidance on the acceptability of the use of deception, notwithstanding the codes of root disciplines. We turn to theories of moral philosophy and use social contract theory specifically to identify conditions under which deception may be justified as morally permissible. Seven guiding principles for research practice are formulated and their implications for consumer researchers are identified, together with practical recommendations for decision making on studies involving deception.
Acetylated tubulin associates with the fifth cytoplasmic domain of Na+/K+-ATPase: possible anchorage site of microtubules to the plasma membrane
Authors: Zampar Guillermo G. , Chesta María E. , Carbajal Agustín , Chanaday Natalí L. , Díaz Nicolás M. , Casale César H. , Arce Carlos A. 
Published: May 2009

We showed previously that NKA (Na+/K+-ATPase) interacts with acetylated tubulin resulting in inhibition of its catalytic activity. In the present work we determined that membrane-acetylated tubulin, in the presence of detergent, behaves as an entity of discrete molecular mass (320–400 kDa) during molecular exclusion chromatography. We also found that microtubules assembled in vitro are able to bind to NKA when incubated with a detergent-solubilized membrane preparation, and that isolated native microtubules have associated NKA. Furthermore, we determined that CD5 (cytoplasmic domain 5 of NKA) is capable of interacting with acetylated tubulin. Taken together, our results are consistent with the idea that NKA may act as a microtubule–plasma membrane anchorage site through an interaction between acetylated tubulin and CD5.
Evolution of upper airway resistance syndrome
Authors: JONCZAK LUIZA , PŁYWACZEWSKI ROBERT , ŚLIWIŃSKI PAWEŁ , BEDNAREK MICHAŁ , GÓRECKA DOROTA , ZIELIŃSKI JAN 
Published: May 2009

SummaryThe question of whether upper airway resistance syndrome (UARS) is a distinct disease or an initial feature of obstructive sleep apnoea syndrome is still a matter of debate. We evaluated a retrospective group of UARS patients to determine the evolution of UARS over time and the relationship between clinical evolution and subjects’ phenotype. Investigations were performed in 30 patients, in whom UARS was diagnosed between 1995 and 2000 by the use of full polysomnography (PSG) without oesophageal pressure (Pes) measurement. The time between initial and follow‐up investigations was 6.6 ± 2.6 years. All subjects had full PSG with Pes measurement and completed a sleep questionnaire, including the Epworth Sleepiness Scale. In 19 subjects, PSG results were compatible with UARS. In nine subjects, obstructive sleep apnoea–hypopnoea syndrome (OSAHS) was diagnosed. In two subjects, PSG did not demonstrate breathing abnormalities. The mean ± SD apnoea–hypopnoea index in the UARS group was 1.5 ± 1.7 h−1 and 25.2 ± 19 h−1 in the OSAHS group (P < 0.01). The increase in body mass index (BMI) between initial and follow‐up investigations in the UARS group was from 29.4 ± 4 to 31 ± 5.7 kg m−2 (P = 0.014) and in the OSAHS group from 30 ± 4.1 to 32.4 ± 4.7 kg m−2(P = 0.004). Amplitude of Pes swings during respiratory events was significantly higher in OSAHS than that in UARS (P = 0.014). Our results suggest that UARS is part of a clinical continuum from habitual snoring to OSAHS. Progression from UARS to OSAHS seems to be related to an increase in the BMI.
A hard day’s night: a longitudinal study on the relationships among job demands and job control, sleep quality and fatigue
Authors: DE LANGE ANNET H. , KOMPIER MICHIEL A. J. , TARIS TOON W. , GEURTS SABINE A. E. , BECKERS DEBBY G. J. , HOUTMAN IRENE L. D. , BONGERS PAULIEN M. 
Published: May 2009

SummaryThis prospective four‐wave study examined (i) the causal direction of the longitudinal relations among job demands, job control, sleep quality and fatigue; and (ii) the effects of stability and change in demand–control history on the development of sleep quality and fatigue. Based on results of a four‐wave complete panel study among 1163 Dutch employees, we found significant effects of job demands and job control on sleep quality and fatigue across a 1‐year time lag, supporting the strain hypothesis (Demand–Control model; Karasek and Theorell, Basic Books, New York, 1990). No reversed or reciprocal causal patterns were detected. Furthermore, our results revealed that cumulative exposure to a high‐strain work environment (characterized by high job demands and low job control) was associated with elevated levels of sleep‐related complaints. Cumulative exposure to a low‐strain work environment (i.e. low job demands and high job control) was associated with the highest sleep quality and lowest level of fatigue. Our results revealed further that changes in exposure history were related to changes in reported sleep quality and fatigue across time. As expected, a transition from a non‐high‐strain towards a high‐strain job was associated with a significant increase in sleep‐related complaints; conversely, a transition towards a non‐high‐strain job was not related to an improvement in sleep‐related problems.