A Study of the Processes and Outcomes of Parental Cooperation Affecting Children’s Reading Ability

This experiment was devised as a possible means of overcoming reading difficulties in children who come from a low socio-economic and cultural background and, at the same time, involving their parents in the reading instructional program. Weekly sessions, involving informal reading activities, were attended by the parents and their children. Those who participated regularly were used as the experimental group, while those who participated at some of the meetings were used as the control group. The purpose of this study was to compare and contrast the growth of reading skills between matched individuals in an experimental group and a control group

Open Letter From the President

Recent mailings from the Executive Secretary of the Iowa Academy of Science to every science teacher in Iowa should encourage each one of us to become an active part of the Iowa Science Teachers Section of the Academy and to become well informed about every phase of the program. By becoming involved in the Iowa Academy you can enjoy all the benefits of membership as well as the advantage of working with science teachers throughout the state

An Investigation to Determine Ways of Further Meeting the Felt Needs of Bremerton Seventh Graders

The purpose of this investigation was to determine to what extent Bremerton intermediate schools are meeting the felt needs of seventh graders. A second purpose of the survey was to discover ways and means to further meet the felt needs of seventh graders

The Multi-Media Approach to Biology

If at first you don\u27t succeed, you are just about average. This flippant statement of a common experience has led to the multi-media approach in an attempt to make the learning of biology for the average sixteen year old who scores between 35 to 89 on the comprehensive test of the ITED more meaningful and successful

Volunteer Laboratory Assistants in BSCS Biology Program

With the introduction of B.S.C.S. Biology and its intense laboratory centered approach into our school curriculum, the need for additional h e l p to check equipment and student findings during class sessions became apparent. The use of volunteer assistants proved to be helpful, not only to the instructor, but also to the student by providing him with an opportunity to be of service to the school and also to carry on supervised research work

Exercise hemodynamics of bovine versus porcine bioprostheses: A prospective randomized comparison of the mosaic and perimount aortic valves

ObjectiveThis prospective randomized study compares a porcine with a bovine bioprosthesis in the aortic position with regard to hemodynamic performance during exercise.MethodsBetween August of 2000 and December of 2002, 136 patients underwent aortic valve replacement with the porcine Medtronic Mosaic (n = 66) or the bovine Carpentier-Edwards Perimount (n = 70) bioprosthesis. Transthoracic echocardiography was performed to assess hemodynamic and dimensional data preoperatively and 10 months postoperatively; the latter follow-up included stress echocardiography with treadmill exercise.ResultsAt rest and during exercise (25 and 50 W), there was a significant difference in mean pressure gradient between the bovine and the porcine valves with labeled sizes 21 and 23, with superiority of the Perimount prosthesis. There was no difference in effective orifice area and incidence of patient-prosthesis mismatch among all sizes. The left ventricular mass index decreased significantly within 10 months postoperatively in the size 23 bovine group and the size 25 porcine group.ConclusionsOur data show a significant superiority of pressure gradients for the bovine bioprosthesis, especially with small valve sizes, when compared with the porcine device, which is more distinctive during exercise

the 19th‐century Tlingit potlatch: a new perspective

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/136398/1/ae.1986.13.2.02a00010.pd

Local erythropoietin and endothelial progenitor cells improve regional cardiac function in acute myocardial infarction

<p>Abstract</p> <p>Background</p> <p>Expanded endothelial progenitor cells (eEPC) improve global left ventricular function in experimental myocardial infarction (MI). Erythropoietin beta (EPO) applied together with eEPC may improve regional myocardial function even further by anti-apoptotic and cardioprotective effects. Aim of this study was to evaluate intramyocardial application of eEPCs and EPO as compared to eEPCs or EPO alone in experimental MI.</p> <p>Methods and Results</p> <p>In vitro experiments revealed that EPO dosed-dependently decreased eEPC and leukocyte apoptosis. Moreover, in the presence of EPO mRNA expression in eEPC of proangiogenic and proinflammatory mediators measured by TaqMan PCR was enhanced. Experimental MI was induced by ligation and reperfusion of the left anterior descending coronary artery of nude rats (n = 8-9). After myocardial transplantation of eEPC and EPO CD68+ leukocyte count and vessel density were enhanced in the border zone of the infarct area. Moreover, apoptosis of transplanted CD31 + TUNEL + eEPC was decreased as compared to transplantation of eEPCs alone. Regional wall motion of the left ventricle was measured using Magnetic Resonance Imaging. After injection of eEPC in the presence of EPO regional wall motion significantly improved as compared to injection of eEPCs or EPO alone.</p> <p>Conclusion</p> <p>Intramyocardial transplantation of eEPC in the presence of EPO during experimental MI improves regional wall motion. This was associated with an increased local inflammation, vasculogenesis and survival of the transplanted cells. Local application of EPO in addition to cell therapy may prove beneficial in myocardial remodeling.</p