bluuebunny/crossref_metadata_2025_split huggingface dataset:
Just Footprints in the Sand? Questioning Sustainability of an IRA International Project
Authors: Lewis‐Spector Jill , Richardson Judy S. , Janusheva Violeta 
Published: November 2011

AbstractVolunteers from the International Reading Association (IRA) participated in the teacher education component of Macedonia's Secondary Education Activity, an initiative to reform vocational/technical education (VET), funded from 2004 to 2008 by USAID. Volunteers offered professional development to VET teachers using a trainer‐of‐trainers model, designed to create more interactive classrooms characterized by critical thinking and collaboration. The three authors–the initial lead volunteer, a Fulbright scholar, and a project participant–assess the sustainability of the component's goals by examining the interactions during project implementation of potential Macedonian change agents, including its Ministry of Education, within the context of institutional stability/change and power relationships. They also report findings from a postproject survey of project participants. While the authors identify political, social, and economic structural weaknesses that hampered widespread sustainability of project goals, they also note important positive effects on certain teachers who participated in IRA's professional development component.
Books Like Clothes: Engaging Young Black Men With Reading
Authors: Kirkland David E. 
Published: November 2011

AbstractUsing 18 weeks of classroom data from a much larger ethnographic study, Kirkland examines the reading ideologies influencing the literacy engagement of a young Black male, Derrick. (To protect participants’ identities, this article uses pseudonyms in place of participants’ actual names.) In doing so, Kirkland theorizes about how young Black males express thoughts about reading through specific statements of identity—what he calls genres of self. He concludes that many Black males read or don't read based on their thoughts about particular reading tasks—which include complex and layered beliefs around texts, contexts (of instruction), and the subtexts that permeate both. Kirkland suggests that young Black men often express such beliefs through grammars of acceptance/rejection. However, when the situation of reading fits them (i.e., corresponds with their reading ideologies), Black males read and find pleasure, interest, and purpose in doing so.
Becoming the Reading Mentors Our Adolescents Deserve: Developing a Successful Sustained Silent Reading Program
Authors: Lee Valarie 
Published: November 2011

AbstractToday's adolescents must meet increasing demands for high levels of literacy. However, low self‐efficacy and motivation for reading often prohibit adolescents from developing and sustaining positive reading habits. Consequently, educators must provide opportunities for students to experience reading as a rewarding and useful endeavor. Research findings connect reading motivation with choice; however, language‐arts programs often do not afford adolescents opportunities to read for enjoyment. Programs such as Sustained Silent Reading (SSR) provide students time, space, most importantly, mentoring for personal reading. This article details one high school English teacher's journey to create a successful SSR period in her classroom using factors for success gleaned from research. The author details the impact teacher mentoring had on students’ reading attitudes and habits. Students experienced success in locating reading materials and sustaining a desire for and habit of reading. The author provides suggestions for high school faculty planning SSR programs in their schools.
Literacy Success: Fifty Students From Areas Throughout the United States Share Their Stories
Authors: Martinez Gilda 
Published: November 2011

AbstractStudents from low‐socioeconomic areas participated in this multiple‐case study, which sought to unveil how they succeeded in developing literacy skills and academic success along with recommendations they had for future students. The students in this study received a full college scholarship through the Ron Brown Scholar Program, and as a result were able to attend various universities of their choice. After completing their Bachelors’ degrees, they filled out surveys and answered follow‐up interview questions to assist with this research project. In addition, the essays submitted to the scholarship program were reviewed to aid in triangulating the data. Thus the data collected were surveys, interviews, and scholarship essays. Data was coded to examine themes that emerged as well as similarities and differences between students. The results indicated that there were six main factors helping the students develop literacy skills and achieve academic success.
Polypropylene‐containing synthetic mesh devices in soft tissue repair: A meta‐analysis
Authors: Huber Alexander , McCabe George P. , Boruch Alan V. , Medberry Christopher , Honerlaw Meghan , Badylak Stephen F. 
Published: November 2011

AbstractThe acute and chronic host tissue response to synthetic and biologic mesh devices for abdominal hernia repair is thought to ultimately determine clinical outcomes such as adhesion formation, device shrinkage, cellular response, and neotissue formation. A meta‐analysis of 38 publications was performed to assess these outcomes in six different treatment groups depending on mesh composition: polypropylene (PP), PP in combination with nonabsorbable polymers, PP in combination with absorbable polymers, non‐PP polymers, non‐PP in combination with absorbable polymers, and natural materials. Despite showing the least device shrinkage, meshes made entirely from PP generally showed the most adverse host tissue response. PP devices with an absorbable component elicited a more beneficial host response with respect to connective tissue adhesion and tissue inflammation than devices made from PP alone. These devices also provided a high level of mechanical stability resulting in a reduced level of adhesion formation and device shrinkage postapplication. However, the compositional heterogeneity within certain groups, that is, devices of non‐PP polymers, non‐PP in combination with absorbable polymers, and natural materials, did not allow for a more detailed evaluation or the identification of a single composition with superior host tissue response characteristics. © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2012.
Development of an injectable two‐phase drug delivery system for sequential release of antiresorptive and osteogenic drugs
Authors: Zou Y. , Brooks J. L. , Talwalkar V. , Milbrandt T. A. , Puleo D. A. 
Published: November 2011

AbstractUnlike controlled release systems that deliver a single drug, dual or multidrug delivery systems with distinct release profiles are more likely to promote timely and effective tissue regeneration as they provide both temporally and concentration‐dependent release of different molecules to mimic natural biological events. In this study, an injectable and biodegradable delivery system was developed to sequentially release an antiresorptive drug (clodronate) followed by an osteogenic agent (simvastatin) to treat bone disease. The injectable delivery system comprised simvastatin‐loaded gelatin microspheres suspended in a viscous solution of carboxymethylcellulose (CMC) containing clodronate. Several factors (CMC concentration, glutaraldehyde concentration, simvastatin loading, and gelatin microsphere processing conditions) were investigated for their effects on drug release. Clodronate release was not affected by CMC concentration, with complete delivery within 12 hr, and simvastatin release could be modulated by cross‐linking of the gelatin microspheres, loading, and washing conditions. Burst release of simvastatin was reduced from 70% to 6% in conjunction with sustained release for up to 3 weeks. The combined system showed early release of the antiresorptive clodronate sequentially followed by sustained delivery of the osteogenic simvastatin. This robust and flexible two‐phase delivery system may prove useful for applications in which multiple drug delivery is desired. © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2012.
A hierarchical mesh film with superhydrophobic and superoleophilic properties for oil and water separation
Authors: Wu Jun , Chen Jing , Qasim Khan , Xia Jun , Lei Wei , Wang Bao‐ping 
Published: November 2011

AbstractBACKGROUND: Solid surfaces possessing both superhydrophobic and superoleophilic properties have attracted great interest for fundamental research and potential application. However, fabrication of the reported surfaces is usually time‐consuming and the wetability of the surfaces could not be achieved to the desired level in rugged environments.RESULTS: A hierarchical stainless steel mesh film comprising structures with three scales of roughness was synthesized by a simple chemical bath deposition method. After being modified with a low surface energy material e.g. Teflon, these films exhibit superhydrophobic and superoleophilic properties. In this study it was demonstrated that the unique properties of the as‐prepared films match well with the requirements for the effective separation of oil and water mixtures.CONCLUSION: It was confirmed that the unique surface wetability of the surface is due to the cooperative effect of the hierarchical structures of the stainless steel mesh films and the natural low surface tension of Teflon. Furthermore, fabrication is simple and economic, and the surface exhibited robust durability even in a rugged environment. Copyright © 2011 Society of Chemical Industry
Effects of light quality on the accumulation of oil in a mixed culture of Chlorella sp. and Saccharomyces cerevisiae
Authors: Shu Chin‐Hang , Tsai Chieh‐Chung , Liao Wei‐Hsiu , Chen Kun‐Yan , Huang Hao‐Chen 
Published: November 2011

AbstractBACKGROUND: Chlorella strains rather than terrestrial oil crops having higher oil content and shorter generation time have been considered as promising candidates for alternative biodiesel. Since the influence of light quality on oil formation of microalgae in either monoculture or mixed culture has been shown to be either inconsistent or ambiguous, a light‐emitting diode (LED) photo‐bioreactor with different light sources and intensities was used in this study to investigate a cost‐effective lipid production process.RESULTS: The oil accumulation in a mixed culture of Chlorella sp. and Saccharomyces cerevisiae was higher than that in the monoculture under the different light sources used. Results of the influence of light quality on the mixed culture indicated that the optimal light wavelength and intensity for biomass formation was red LED light at 1000 lux, whereas the optimum for oil formation was blue LED light at 1000 lux. A novel two‐stage LED photo‐bioreactor was thus proposed and the highest Pmax and productivity in this study were obtained as 261 mg L−1 and 8.16 mg L−1 h−1, respectively.CONCLUSION: A novel two‐stage LED photo‐bioreactor using a mixed culture to optimize microalgal oil production was proposed and successfully demonstrated in this study. Copyright © 2011 Society of Chemical Industry
Exogenous collagen cross‐linking recovers tendon functional integrity in an experimental model of partial tear
Authors: Fessel Gion , Wernli Jeremy , Li Yufei , Gerber Christian , Snedeker Jess G. 
Published: November 2011

AbstractWe investigated the hypothesis that exogenous collagen cross‐linking can augment intact regions of tendon to mitigate mechanical propagation of partial tears. We first screened the low toxicity collagen cross‐linkers genipin, methylglyoxal and ultra‐violet (UV) light for their ability to augment tendon stiffness and failure load in rat tail tendon fascicles (RTTF). We then investigated cross‐linking effects in load bearing equine superficial digital flexor tendons (SDFT). Data indicated that all three cross‐linking agents augmented RTTF mechanical properties but reduced native viscoelasticity. In contrast to effects observed in fascicles, methylglyoxal treatment of SDFT detrimentally affected tendon mechanical integrity, and in the case of UV did not alter tendon mechanics. As in the RTTF experiments, genipin cross‐linking of SDFT resulted in increased stiffness, higher failure loads and reduced viscoelasticity. Based on this result we assessed the efficacy of genipin in arresting tendon tear propagation in cyclic loading to failure. Genipin cross‐linking secondary to a mid‐substance biopsy‐punch significantly reduced tissue strains, increased elastic modulus and increased resistance to fatigue failure. We conclude that genipin cross‐linking of injured tendons holds potential for arresting tendon tear progression, and that implications of the treatment on matrix remodeling in living tendons should now be investigated. © 2011 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 30:973–981, 2012
Proliferation and differentiation of human tenocytes in response to platelet rich plasma: An in vitro and in vivo study
Authors: Wang Xiao , Qiu Yiwei , Triffitt James , Carr Andrew , Xia Zhidao , Sabokbar Afsie 
Published: November 2011

AbstractPlatelet rich plasma (PRP) is the autologous plasma fraction with a platelet‐rich cellular component which is enriched with a number of growth factors. Due to its availability and low cost, PRP has become an increasingly popular clinical tool as an alternative source of growth factors for various applications, for example, tendon regeneration but with limited success in clinical trials. The main objective of the current study was to determine whether activated PRP [i.e., platelet rich plasma‐clot release (PRCR)] could be used to induce the proliferation and collagen synthesis in human tenocyte in vitro. The advantage of using PRCR is that the platelet‐derived bioactive factors are more concentrated and could initiate a more rapid and accelerated healing response than PRP. Our results demonstrated that 10% PRCR treatment accelerated the extent of cell proliferation and collagen production by human tenocytes in vitro. The expression of specific tenocyte markers were similar to conventional fetal bovine serum (FBS)‐treated tenocytes implanted in mice within 14 days of implantation in diffusion chambers. Moreover, relatively more collagen fibrils were evident in PRCR‐treated tenocytes in vivo as compared to 10% FBS‐treated cells. Overall, our feasibility study has indicated that PRCR can induce human tenocyte proliferation and collagen synthesis which could be implemented for future tendon regeneration in reconstructive surgeries. © 2011 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 30:982–990, 2012
Resource selection by the eastern massasauga rattlesnake on managed land in southwestern Michigan
Authors: Bailey Robyn L. , Campa Henry , Bissell Kristin M. , Harrison Tara M. 
Published: November 2011

AbstractThe eastern massasauga rattlesnake (Sistrurus catenatus catenatus) has experienced population declines throughout its range and is now a candidate for federal protection. However, little is known about massasauga habitat selection in Michigan, particularly in actively managed landscapes. Our objectives were to: 1) quantify whether massasaugas in southwestern Michigan select certain vegetation types disproportionately to their availability and 2) quantify whether the vegetation structure associated with snake locations differed between managed (e.g., burning, woody species removal) and unmanaged stands. We implanted radio transmitters in 51 snakes from 2004 to 2005 and 2008 to 2009. We quantified second‐order resource selection using compositional analysis, and modeled the effect of habitat management efforts on vegetation using 4 structural variables. All snakes selected cover types disproportionately to their availability (P = 0.001); a ranking matrix ordered the vegetation types, from most to least used, as: early‐mid successional deciduous wetland > early‐mid successional deciduous upland > developed > late successional mixed lowland forest > late successional deciduous upland forest. We found that snakes in managed areas were associated with greater amounts of dead herbaceous cover (P = 0.005) and less woody stem density (P < 0.001) and tree dominance (P < 0.001) than were snakes in unmanaged areas; however, live herbaceous cover was comparable. Our results can be used by regional managers to provide early and mid successional habitat with structure similar to that selected by snakes in Michigan. © 2011 The Wildlife Society.
Short‐term response of Dicamptodon tenebrosus larvae to timber management in southwestern Oregon
Authors: Leuthold Niels , Adams Michael J. , Hayes John P. 
Published: November 2011

AbstractIn the Pacific Northwest, previous studies have found a negative effect of timber management on the abundance of stream amphibians, but results have been variable and region specific. These studies have generally used survey methods that did not account for differences in capture probability and focused on stands that were harvested under older management practices. We examined the influences of contemporary forest practices on larval Dicamptodon tenebrosus as part of the Hinkle Creek paired watershed study. We used a mark–recapture analysis to estimate D. tenebrosus density at 100 1‐m sites spread throughout the basin and used extended linear models that accounted for correlation resulting from the repeated surveys at sites across years. Density was associated with substrate, but we found no evidence of an effect of harvest. While holding other factors constant, the model‐averaged estimates indicated; 1) each 10% increase in small cobble or larger substrate increased median density of D. tenebrosus 1.05 times, 2) each 100‐ha increase in the upstream area drained decreased median density of D. tenebrosus 0.96 times, and 3) increasing the fish density in the 40 m around a site by 0.01 increased median salamander density 1.01 times. Although this study took place in a single basin, it suggests that timber management in similar third‐order basins of the southwestern Oregon Cascade foothills is unlikely to have short‐term effects of D. tenebrosus larvae. © 2011 The Wildlife Society.
Factors affecting breeding season survival of red‐headed woodpeckers in South Carolina
Authors: Kilgo John C. , Vukovich Mark 
Published: November 2011

AbstractRed‐headed woodpecker (Melanerpes erythrocephalus) populations have declined in the United States and Canada over the past 40 years. However, few demographic studies have been published on the species and none have addressed adult survival. During 2006–2007, we estimated survival probabilities of 80 radio‐tagged red‐headed woodpeckers during the breeding season in mature loblolly pine (Pinus taeda) forests in South Carolina. We used known‐fate models in Program MARK to estimate survival within and between years and to evaluate the effects of foliar cover (number of available cover patches), snag density treatment (high density vs. low density), and sex and age of woodpeckers. Weekly survival probabilities followed a quadratic time trend, being lowest during mid‐summer, which coincided with the late nestling and fledgling period. Avian predation, particularly by Cooper's (Accipiter cooperii) and sharp‐shinned hawks (A. striatus), accounted for 85% of all mortalities. Our best‐supported model estimated an 18‐week breeding season survival probability of 0.72 (95% CI = 0.54–0.85) and indicated that the number of cover patches interacted with sex of woodpeckers to affect survival; females with few available cover patches had a lower probability of survival than either males or females with more cover patches. At the median number of cover patches available (n = 6), breeding season survival of females was 0.82 (95% CI = 0.54–0.94) and of males was 0.60 (95% CI = 0.42–0.76). The number of cover patches available to woodpeckers appeared in all 3 of our top models predicting weekly survival, providing further evidence that woodpecker survival was positively associated with availability of cover. Woodpecker survival was not associated with snag density. Our results suggest that protection of ≥0.7 cover patches per ha during vegetation control activities in mature pine forests will benefit survival of this Partners In Flight Watch List species. © 2011 The Wildlife Society.
Socioeconomic and ecological correlates of bobcat harvest in Minnesota
Authors: Kapfer Paul M. , Potts Kevin B. 
Published: November 2011

AbstractManagement of game animals requires understanding of factors that affect harvest levels. Although influenced by international law, bobcat (Lynx rufus) management is the responsibility of state or provincial agencies, and jurisdictional environmental, ecological, and regulatory differences may alter which variables influence harvest. Consequently, our understanding of the factors driving bobcat harvest should be at a scale similar to that at which they are managed. We associated 32 years of bobcat harvest data from Minnesota with socioeconomic (e.g., pelt prices, license sales) and ecological variables (e.g., prey abundance, bobcat‐specific index of winter severity) to determine what variables most strongly influenced annual bobcat harvest. We constructed candidate negative binomial generalized linear models based on an information–theoretic approach and used quasi‐likelihood Akaike's Information Criterion adjusted for small sample size to assess the relative performance of each model. Our best model suggested that annual bobcat harvest in Minnesota was positively related to the proportion of scent stations visited by bobcats and season length, and negatively related to the proportion of days when the maximum temperature did not exceed the bobcat's lower critical temperature. Our results differ from those of other studies examining factors influencing furbearer harvest that have suggested furbearer harvest is driven primarily by pelt price, and suggest that managers can influence the annual harvest of bobcats by changing season length. © 2011 The Wildlife Society.
Polymeric Photoresist Nanoparticles: Light‐Induced Degradation of Hydrophobic Polymers in Aqueous Dispersion
Authors: Klinger Daniel , Landfester Katharina 
Published: November 2011

AbstractNanoparticles consisting of a photoreactive polymer able to radically switch its hydrophobicity are successfully prepared by miniemulsion polymerization. Irradiation with UV light causes degradation of the particles whereat complete dissolution is achieved by changing the initial hydrophobic photoresist polymer into hydrophilic poly(methacrylic acid). Incorporation of the fluorescence‐sensitive Nile red serves as a solvatochromic probe to study the particle degradation. Diffusion of either Nile red out from or water into the former hard spherical nanoparticles is studied and not only renders the described material an ideal system for applications, where in situ dissolution of nanoparticles may be needed, but also bears the additional advantage of performing controlled burst release.
Functional Polyolefins: Poly(ethylene)‐graft‐Poly(tert‐butyl acrylate) via Atom Transfer Radical Polymerization From a Polybrominated Alkane
Authors: Xu Guangjuan , Wang Dongren , Buchmeiser Michael R. 
Published: November 2011

AbstractPoly(cis‐cyclooctene) is synthesized via ring‐opening metathesis polymerization in the presence of a chain‐transfer agent and quantitatively hydrobrominated. Subsequent graft polymerization of tert‐butyl acrylate (tBA) via Cu‐catalyzed atom transfer radical polymerization (ATRP) from the non‐activated secondary alkyl bromide moieties finally results in PE‐g‐PtBA copolymer brushes. By varying the reaction conditions, a series of well‐defined graft copolymers with different graft densities and graft lengths are prepared. The maximum extent of grafting in terms of bromoalkyl groups involved is approximately 80 mol%. DSC measurements on the obtained graft copolymers reveal a decrease in Tm with increasing grafting density.