Rapid inertial solution exchange for enrichment and flow cytometric detection of microvesicles     

Jaideep S. Dudani  Daniel R. Gossett  Henry T. K. Tse  Robert J. Lamm  Rajan P. Kulkarni  Dino Di Carlo 《Biomicrofluidics》2015,9(1)

Exosomes, nanosized membrane-bound vesicles released by cells, play roles in cell signaling, immunology, virology, and oncology. Their study, however, has been hampered by difficulty in isolation and quantification due to their size and the complexity of biological samples. Conventional approaches to improved isolation require specialized equipment and extensive sample preparation time. Therefore, isolation and detection methods of exosomes will benefit biological and clinical studies. Here, we report a microfluidic platform for inline exosome isolation and fluorescent detection using inertial manipulation of antibody-coated exosome capture beads from biological fluids.  相似文献   

Editorial: E-government without government     

John A. Shuler  Paul T. Jaeger  John Carlo Bertot 《Government Information Quarterly》2014

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Physiological responses to ball-drills in regional level male basketball players     

Castagna C  Impellizzeri FM  Chaouachi A  Ben Abdelkrim N  Manzi V 《Journal of sports sciences》2011,29(12):1329-1336

The main aim of this study was to assess the physiological responses of male basketball players during usual basketball ball-drills. Fourteen male basketball players (age 18.9 ± 2.3 years) performed the following full-court (28 × 15 m) basketball ball-drills (3 × 4-min with 3-min passive rest): five-a-side (5v5), three-a-side (3v3) and two-a-side (2v2). A main effect (P < 0.0001) for ball-drills modes was evident for all variables (5v5 < 3v3 < 2v2). Mean [Vdot]O(2) during the 5v5, 3v3 and 2v2 were 39.0 ± 7.2, 42.0 ± 7.5 and 45.0 ± 6.5 ml · kg(-1) · min(-1) (69 ± 11, 74 ± 12 and 79 ± 11% of [Vdot]O(2peak)) respectively (5v5 = 3v3 < 2v2, P < 0.001). Mean blood-lactate concentrations for 5v5, 3v3 and 2v2 were 4.2 ± 1.8, 6.2 ± 2.3 and 7.8 ± 1.2 mmol (l(-1) respectively (5v5 < 3v3 < 2v2, P < 0.01). During the 5v5, 3v3 and 2v2 mean heart-rate (HR) was 84.0 ± 9.2, 88.0 ± 8.4 and 92.0 ± 5.6% of the individual peak respectively (5v5 < 3v3 < 2v2; P < 0.001). No significant differences were found between the regression-line slope (P = 0.86) and intercept (P = 0.45) of the HR-[Vdot]O(2) relationships of the multistage maximal fitness test (r(2) from 0.80 to 0.96, P < 0.001) and ball-drills (r(2) from 0.70 to 0.95, P < 0.001) conditions. Reducing the number of players over the same playing court resulted in increments in physiological demands. The 2v2 condition provided responses in the range of those reported to improve aerobic and anaerobic fitness. The aerobic demands of ball-drills can be accurately assessed using heart-rate monitoring in basketball.  相似文献   

Does Helping Keep Teens Protected? Longitudinal Bidirectional Relations Between Prosocial Behavior and Problem Behavior          下载免费PDF全文

Laura M. Padilla‐Walker  Gustavo Carlo  Matthew G. Nielson 《Child development》2015,86(6):1759-1772

The current study examined bidirectional, longitudinal links between prosocial and problem behavior. Participants (N = 500) were recruited from a Northwestern city in the United States and assessed for 3 consecutive years from 2009 to 2011 (M_age of youth at Time 1 = 13.32, SD = 1.05; 52% girls; 67% European American, 33% single‐parent families). Results suggested that effects of earlier prosocial behavior toward family and strangers were predictive of fewer problem behaviors 2 years later, while results for prosocial behavior toward friends were more mixed. Results also suggested depression predicted lower prosocial behavior toward family members and anxiety predicted higher prosocial behavior toward friends. Findings show a complex pattern of relations that demonstrate the need to consider targets of helping.  相似文献   

Encouraging creativity through copyright protection: The 5th IPA Copyright Conference Accra, Ghana, 20–22 February 2002     

Carlo Scollo Lavizzari 《Publishing Research Quarterly》2002,18(2):41-49

Conclusion The 5^th IPA Copyright Conference was stimulating and achieved its purpose of fostering debate among publishers and copyright experts. Many of the debates and findings were certainly no cause for reassurance or a mere exercise in accepted wisdom. Richard Rudick, Chairman of IPA's copyright committee aptly summed this up by citing Oliver Wendell Holmes Jr. (1841–1935): Certainty generally is illusion, and repose is not the destiny of man. Lucky an industry that can have thought-provoking internal debates.  相似文献   

Back to basics: working with young children with autism in inclusive classrooms     

Aaron R. Deris  Cynthia F. Di Carlo 《Support for Learning》2013,28(2):52-56

Young children with autism benefit from various adaptations made to an early childhood classroom. This article includes modifications for both teacher‐directed and child‐initiated activities. Adaptations are given for the classroom environment, daily schedule, sensory needs, transitions and general teaching strategies. The techniques described are especially important when working with young children with autism, but are also helpful for all young children. The information provided is gained from several years of experience working with young children with autism in schools, homes and childcare.  相似文献   

Developing a Reflective Practitioner Through the Connection Between Educational Research and Reflective Practices     

Dawn Del Carlo  Holly Hinkhouse  Leah Isbell 《Journal of Science Education and Technology》2010,19(1):58-68

This paper outlines the connection between qualitative research methods in education and teacher reflective practices as they relate to Valli’s (Reflective teacher education: cases and critiques. State University of New York Press, Albany, 1992; Peabody J Educ 72(1): 67–88, 1997) model of reflection. Using the authors’ own experiences in performing and guiding educational research, and existing research in the field of teacher education pertaining to reflective practitioners, explicit connections are made between the two paradigms. These connections illustrate the importance of integrating authentic research experiences into the teacher education curriculum outside the context of methods courses, much like models established in the sciences.  相似文献   

Reconciling government documents and e-government: Government information in policy,librarianship, and education     

John Carlo Bertot  Paul T. Jaeger  John A. Shuler  Shannon N. Simmons  Justin M. Grimes 《Government Information Quarterly》2009

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Iron balance and iron supplementation for the female athlete: A practical approach     

Charles R Pedlar  Carlo Brugnara  Georgie Bruinvels  Richard Burden 《European Journal of Sport Science》2018,18(2):295-305

Maintaining a positive iron balance is essential for female athletes to avoid the effects of iron deficiency and anaemia and to maintain or improve performance. A major function of iron is in the production of the oxygen and carbon dioxide carrying molecule, haemoglobin, via erythropoiesis. Iron balance is under the control of a number of factors including the peptide hormone hepcidin, dietary iron intake and absorption, environmental stressors (e.g. altitude), exercise, menstrual blood loss and genetics. Menstruating females, particularly those with heavy menstrual bleeding are at an elevated risk of iron deficiency. Haemoglobin concentration [Hb] and serum ferritin (sFer) are traditionally used to identify iron deficiency, however, in isolation these may have limited value in athletes due to: (1) the effects of fluctuations in plasma volume in response to training or the environment on [Hb], (2) the influence of inflammation on sFer and (3) the absence of sport, gender and individually specific normative data. A more detailed and longitudinal examination of haematology, menstrual cycle pattern, biochemistry, exercise physiology, environmental factors and training load can offer a superior characterisation of iron status and help to direct appropriate interventions that will avoid iron deficiency or iron overload. Supplementation is often required in iron deficiency; however, nutritional strategies to increase iron intake, rest and descent from altitude can also be effective and will help to prevent future iron deficient episodes. In severe cases or where there is a time-critical need, such as major championships, iron injections may be appropriate.  相似文献   

Culture,technology and local networks: towards a sociology of ‘making’ in education     

Carlo Perrotta  Chris Bailey  Claire Garside 《Cambridge Journal of Education》2018,48(5):553-569

This article is about ‘making’ in education. Often associated with software programming (as in ‘digital making’), making can also involve creating or modifying physical technological artefacts. In this paper, making is examined as a phenomenon that occurs at the intersection of culture, the economy, technology and education. The focus is not on the effects on cognitive gains or motivations, but on locating making in a social, historical and economic context. Making is also described as a form of ‘material connotation’, where connotation refers to the process through which the technical structure of artefacts is altered by culture and society. In the second part of the paper, the theoretical discussion is complemented by a case study in which making is described as a networked phenomenon where technology companies, consultants, volunteers, schools, and students were all implicated in turning a nebulous set of practices and discourses into an educational reality.  相似文献