Characterisation of host growth after infection with a broad-range freshwater cyanopodophage

Freshwater cyanophages are poorly characterised in comparison to their marine counterparts, however, the level of genetic diversity that exists in freshwater cyanophage communities is likely to exceed that found in marine environments, due to the habitat heterogeneity within freshwater systems. Many cyanophages are specialists, infecting a single host species or strain; however, some are less fastidious and infect a number of different host genotypes within the same species or even hosts from different genera. Few instances of host growth characterisation after infection by broad host-range phages have been described. Here we provide an initial characterisation of interactions between a cyanophage isolated from a freshwater fishing lake in the south of England and its hosts. Designated ΦMHI42, the phage is able to infect isolates from two genera of freshwater cyanobacteria, Planktothrix and Microcystis. Transmission Electron Microscopy and Atomic Force Microscopy indicate that ΦMHI42 is a member of the Podoviridae, albeit with a larger than expected capsid. The kinetics of host growth after infection with ΦMHI42 differed across host genera, species and strains in a way that was not related to the growth rate of the uninfected host. To our knowledge, this is the first characterisation of the growth of cyanobacteria in the presence of a broad host-range freshwater cyanophage

Simulated Economic Impact of TED Regulations on Selected Vessels in the Texas Shrimp Fishery

Shrimp fishermen trawling in the Gulf of Mexico and south Atlantic inadvertently capture and kill sea turtles which are classified as endangered species. Recent legislation requires the use of a Turtle Excluder Device(TED) which, when in place in the shrimp trawl, reduces sea turtle mortality. The impact of the TED on shrimp production is not known. This intermediate analysis of the TED regulations using an annual firm level simulation model indicated that the average Texas shrimp vessel had a low probability of being an economic success before regulations were enacted. An assumption that the TED regulations resulted in decreased production aggravated this condition and the change in Ending Net Worth and Net Present Value of Ending Net Worth before and after a TED was placed in the net was significant at the 5 percent level. However, the difference in the Internal Rate of Return for the TED and non-TED simulations was not significant unless the TED caused a substantial change in catch. This analysis did not allow for interactions between the fishermen in the shrimp industry, an assumption which could significantly alter the impact of TED use on the catch and earnings of the individual shrimp vessel

Robert Chambers "Preppy Murder" Case Bibliography

African and African Diaspora Studie

'Campaigns Against "Blackness"': Criminality, Civility, and Election to Executive Office

‘Campaigns against “Blackness”’ focuses on the 2008 Democratic presidential primary waged by Barack Obama and the 2006 Massachusetts gubernatorial race run by Deval Patrick. It explores racial bias expressed against and by African-American males seeking high office. In these campaigns, the convergence of racial uplift and multicultural democracy manifests in mandates against blackness represented as criminality and political incivility. Historically, US anti-black anima forged tropes of ‘criminality’ and ‘incivility’ that demonized blacks as unsuitable for full citizenship. Today, the new black candidates successfully deflect these tropes, in part, by redeploying them against non-elites, and anti-racist discourse and activism.John L. Warfield Center for African and African American Studie

The Effect of Supplementing Winter Range Grazing on Beef Cow Body Weights, Calf Production, and Calf Gains

SOuth Dakota is one of the most important beef cattle producing states in the nation, ranking fifth on the average between 1943-1947. The number of beef cattle in SOuth Dakota has been increasing during the past several years. Most parts of the state are well adapted to beef production, especially the range area in the western part where extensive grass lands are available. The twenty-two western counties of South Dakota, the portion of the state generally considered as the range area, comprise 37, 130 square miles or forty-eight percent of the total acreage of the state. On January 1, 1947 there were 701, 700 head of cattle, other than milk cows, within this area an increase of 392,800 head of cattle in six years. Anonymous (1940 and 1947). The success of the beef cattle enterprises in western South Dakota depends largely upon the economical use of supplemental feeds for wintering of breeding and stocker cattle, proper stocking of ranges for summer grazing, and the development and maintenance of good quality breeding herds. Many cattle raisers in western South Dakota have varying amounts and types of supplemental feeds available for wintering beef cows. The experiment reported in this thesis was designed to study the effects of various winter rations on cow weights, calf production, and calf weaning weights. Wintering experiments have been conducted at other experiment stations, but until this study was initiated there had not been a study of wintering beef cows under South Dakota climatic conditions using feeds produced in this state. There have been some experiments conducted on wintering steers in South Dakota. This study was made with four kinds of winter rations suitable to western South Dakota to determine their effect on cow weights during thw wintering period, the number and weights of calves produced at birth, and the number and weights of calves at weaning time. The purpose of the experiment was to obtain information for use in planning a ration for wintering beef cows which would result in greater beef production for the ranchers of western South Dakota, as wintering of breeding cows constitutes one of the major problems of beef cattle industry in this area

The Ursinus Weekly, July 17, 1944

First decks play ball tonight in starting game of schedule • Library will present concert this evening • Actors plan play; dramatists have new regulations • Committee plans summer schedule • V-12 men now outnumber civilians as summer semester opens here • Assembly to be held on campus August 7-14 • Students elect WSGA leader • Y projects vary • Norristown pastor addresses Y Sunday vespers service • Andrew Rihl buys Highland Hall twenty years college property • Starer enters V-12 from Pacific area • Customshttps://digitalcommons.ursinus.edu/weekly/1685/thumbnail.jp

Use of a student response system in Primary Schools — an empirical study

This paper reports a pilot study for a student response system (SRS) used in an English school. The technology used is the “Wireless Response System” – WRS developed at Huddersfield University, and the learning activities were conducted in Mathematics and English classes. The main concepts – activity based, problem based and opinion based learning – are adopted into the study. A case study was the method used in the investigation. The results show that the system is suitable for different sizes groups of users, who may choose their preferred question types. The school claims the use of WRS was successful, evidenced by the data collected, and the children and teachers were interested in using it. We conclude that the SRS can assist teachers in classroom teaching at primary school level, especially in the observations of engagement and effectiveness of students’ learning

McREL Leadership Responsibilities through the Lens of Data: The Critical Nine

In the United States, the beginning of the┬á 21st century also ushered in a new era of school accountability and reform with the No Child Left Behind Act [NCLB] (US Department of Education, 2010). Although the law is no longer in effect, the district and school level accountability that it brought remains. The accountability and need for ongoing improvement rest squarely on the shoulders of school principals, many of whom have no skill sets or experience with the use of data to improve student outcomes. This article utilizes the research studies and findings from the Mid-Continent Research for Education and Learning (McREL) lab, in order to examine those leadership responsibilities intertwined with the use of data to improve student achievement. McREL has identified 21 leadership responsibilities that describe the knowledge and skills school leaders need to positively impact student achievement.┬á This analysis focuses on the McREL leadership responsibilities with an effect size of .25 or higher that require a focus on data. The use of hard and soft data to focus improvement is then analyzed and expanded upon through the McREL lens. ┬á ┬