The Cultivation of <i>Arabidopsis </i>for Experimental Research Using Commercially Available Peat-Based and Peat-Free Growing Media

Experimental research involving Arabidopsis thaliana often involves the quantification of phenotypic traits during cultivation on compost or other growing media. Many commercially-available growing media contain peat, but peat extraction is not sustainable due to its very slow rate of formation. Moreover, peat extraction reduces peatland biodiversity and releases stored carbon and methane into the atmosphere. Here, we compared the experimental performance of Arabidopsis on peat-based and several types of commercially-available peat-free growing media (variously formed from coir, composted bark, wood-fibre, and domestic compost), to provide guidance for reducing peat use in plant sciences research with Arabidopsis. Arabidopsis biomass accumulation and seed yield were reduced by cultivation on several types of peat-free growing media. Arabidopsis performed extremely poorly on coir alone, presumably because this medium was completely nitrate-free. Some peat-free growing media were more susceptible to fungal contamination. We found that autoclaving of control (peat-based) growing media had no effect upon any physiological parameters that we examined, compared with non-autoclaved control growing media, under our experimental conditions. Overall, we conclude that Arabidopsis performs best when cultivated on peat-based growing media because seed yield was almost always reduced when peat-free media were used. This may be because standard laboratory protocols and growth conditions for Arabidopsis are optimized for peat-based media. However, during the vegetative growth phase several phenotypic traits were comparable between plants cultivated on peat-based and some peat-free media, suggesting that under certain circumstances peat-free media can be suitable for phenotypic analysis of Arabidopsis

Prospectus, May 4, 1970

PC TEACH-IN ON OVER POPULATION; James, Neal Propose Registration Revisions; Parking Tickets Can Cause Suspension; Applications Ready For Fall Elections; Second Road Rally Scheduled; Butler Wins Scholarship; Letters To The Editor; Political Oppression; Environmental Crisis Week: Boneyard Cleanup Has Large Turnout; What People had to say....; C-U Boneyard Shown On Slides In Quiet Lounge; Government needs to be Restructured: Malkovich; Kraft-Humko Given Thirty Days; \u27Fantasia\u27 Is Sensory Experience; College President Is Not Censor; Bull Page: Speaker Engaged For Graduation, Calendar, Second Road Rally Scheduledhttps://spark.parkland.edu/prospectus_1970/1028/thumbnail.jp

Prospectus, June 3, 1970

PARKLAND OBSERVES STRIKE; President Nixon Addresses Graduates; Kraft-Humko Report Is Vague and Insufficient ; Letters To The Editor; Repression Of Teachers; Farris Talks About Year\u27s Work, Events; White House Conference; Dental Hygiene Activities: Students Active In Community Programs; Ruth St. John: Withdraw As Fast As Possible , We Always Keep On Learning ; Students Endorse Strike; Prospectus, Senate Push Boycott; Students Speak Out On Strike; Student Strike Poll Results; Administrators Claim Parkland Not Affected By Strike; Cambodia--Another Nam?; Anti-Nixon, Cambodia Teach-In; Faculty Says Symbolic Strike Justified; Hypnosis Increasingly Popular In Medicine; Woodstock Denies Capitalism, Profit; Summer Recreation At Allerton Park; From The Office of Senator Edward M. Kennedy of Massachusetts; Bull Page: Article Appear In Agricultural Education Magazine, P.C. Students Wins State Speech Contest; Student Govt., College Draft Deferments, Teacher Aid Classes Have Lecturer; Exploding Population : Blazier Lectures On Population Problem; Hopes For Control Of Contraception; Candy Store-Restaurant Ends 45 Year Historyhttps://spark.parkland.edu/prospectus_1970/1027/thumbnail.jp

Behavioral and neuroendocrine correlates of displaced aggression in trout

In humans and other primates, violent actions performed by victims of aggression are often directed toward an individual or object that is not the original source of provocation. This psychological phenomenon is often referred to as displaced aggression. We demonstrate that displaced aggression is either rooted in evolutionarily conserved behavioral and neuroendocrine mechanisms, or represent a convergent pattern that has arisen independently in fish and mammals. Rainbow trout that briefly encountered large, aggressive fish reacted with increased aggression towards smaller individuals. There was a strong negative correlation between received aggression and behavioral change: Individuals subjected to intense aggression were subdued, while moderate assaults induced strong agitation. Patterns of forebrain serotonin turnover and plasma cortisol suggest that the presence of socially subordinate fish had an inhibitory effect on neuroendocrine stress responses. Thus, subordinate individuals may serve as stress reducing means of aggressive outlet, and displaced aggression towards such individuals appears to be a behavioral stress coping strategy in fishes

Anti-welfare attitudes. The rise and fall of anti-welfare attitudes across four decades: politics, pensioners and poverty

Over the past four decades, there have been two periods of dramatic change in our attitudes to welfare; negative attitudes increased in the late 1990s and 2000s, while attitudes have softened since 2010. While the first period of change is well understood, being largely driven by changes in the views of Labour Party voters, this chapter focuses on the second period of change. How have attitudes to welfare changed over the past decade and can a softening of attitudes be attributed to politicians, the media, changing perceptions of poverty or to changes in Britain’s demographic make-up

Prospectus, April 20, 1970

ENVIRONMENT TEACH-IN BONEYARD CLEAN UP; Salaries To Come Next Year, Tuition; Guidelines Proposed For Disciplinary Action; Agnew And You; Letters To The Editor; Present Grading System Should Stay---; Refuse To Fight War Undeclared; Veterans Receive Boost; At A Moment\u27s Notice...: Our Parkland Secretaries; PC Nurses Active In State Organization; IFUC Instrumental In GI Bill Raise; Sterile Cuckoo Sad Little Story; Bull Page: Art Contest Held, Calendar, Library Orientation Program Produced, Cole, Reynolds Win Road Rally, News...News, Horrors; Abbey: track Men \u27Excell\u27; Cagers Finish Season 11-13; Intramural Schedulehttps://spark.parkland.edu/prospectus_1970/1029/thumbnail.jp

Oxy-fuel Combustion and Integrated Pollutant Removal as Retrofit Technologies for Removing CO2 from Coal Fired Power Plants

One third of the US installed capacity is coal-fired, producing 49.7% of net electric generation in 20051. Any approach to curbing CO2 production must consider the installed capacity and provide a mechanism for preserving this resource while meeting CO2 reduction goals. One promising approach to both new generation and retrofit is oxy-fuel combustion. Using oxygen instead of air as the oxidizer in a boiler provides a concentrated CO2 combustion product for processing into a sequestration-ready fluid.... Post-combustion carbon capture and oxy-fuel combustion paired with a compression capture technology such as IPR are both candidates for retrofitting pc combustion plants to meet carbon emission limits. This paper will focus on oxy-fuel combustion as applied to existing coal power plants

Using Calibrated Peer Review⢠to Assess and Improve the Quality of Student Documentation of Clinical Encounters at the University of New Mexico School of Medicine (UNMSOM).

The UNMSOM adapted Calibrated Peer Review™, an internet based writing tool, to assist medical students in assessing the structure and content of their clinical notes. Students watch videotaped clinical encounters and write notes based on these patient visits. Students then apply faculty-established standards to assess three calibration notes, the notes of three peers, and their own note. CRR will be demonstrated and student satisfaction described

The Case for a Muon Collider Higgs Factory

We propose the construction of a compact Muon Collider Higgs Factory. Such a machine can produce up to \sim 14,000 at 8\times 10^{31} cm^-2 sec^-1 clean Higgs events per year, enabling the most precise possible measurement of the mass, width and Higgs-Yukawa coupling constants.Comment: Supporting letter for the document: "Muon Collider Higgs Factory for Smowmass 2013", A White Paper submitted to the 2013 U.S. Community Summer Study of the Division of Particles and Fields of the American Physical Society, Y. Alexahin, et. al, FERMILAB-CONF-13-245-T (July, 2013

Proof of concept for integrating oxy-fuel combustion and the removal of all pollutants from a coal fired flame

working together under a Cooperative Research and Development Agreement, have demonstrated proof-of-concept for the integration of Jupiter&apos;s oxy-fuel combustion and an integrated system for the removal of all stack pollutants, including CO 2 , from a coal-fired flame. The components were developed using existing process technology with the addition of a new oxy-coal combustion nozzle. The results of the test showed that the system can capture SOx, NOx, particulates, and even mercury as a part of the process of producing liquefied CO 2 for sequestration. This is part of an ongoing research project to explore alternative methods for CO 2 capture that will be applicable to both retrofit and new plant construction. BACKGROUN