Floral

Floral is a personal essay that explores the speaker\u27s relationship with different flowers and floral elements, ranging in time from early childhood to present day

Stop the Silence

I am tired of the numbers. The statistics. We all know them. One out of every six women are the victims of sexual assault. One out of thirty-three men are victims of sexual assault. Forty-four percent of victims are under the age of eighteen at the time of their assault. The transgender and queer communities are three times as likely to be targeted for sexual assault. But numbers don’t carry meaning, the don’t carry identity, and they (very quickly) lose their weight and are forgotten. Names mean much more. Stories make an impact

THE EDUCATION JUSTICE: THE HONORABLE LEWIS FRANKLIN POWELL, JR.

The Honorable Lewis Franklin Powell, Jr. is “the education Justice” of the United States. During his tenure on the U.S. Supreme Court, from 1971 to 1987, Justice Powell authored at least twenty major opinions in education law, in addition to numerous significant concurrences and dissents. Just a sampling of Justice Powell\u27s majority opinions on education could form the bulk of an education law textbook recognizable by any American law student. This Article will explore some of Justice Powell\u27s major Supreme Court rulings in education law. It will also consider how these rulings may have related to aspects of Justice Powell\u27s life. In addition, the Article will briefly describe the Supreme Court\u27s current views on education and will attempt to describe how Justice Powell might analyze these issues today. At least one sitting Justice on the Supreme Court, Justice Sandra Day O\u27Connor, appears to have been influenced by Justice Powell\u27s views. Justice O\u27Connor occupies a similar ideological position on the Supreme Court as did Justice Powell, who wrote more than 250 majority opinions and whose “knack for being on the winning side never dropped below eighty per cent in any term, and often exceeded ninety per cent.

Modeling the Emission from Turbulent Relativistic Jets in Active Galactic Nuclei

We present a numerical model developed to calculate observed fluxes of relativistic jets in active galactic nuclei. The observed flux of each turbulent eddy is dependent upon its variable Doppler boosting factor, computed as a function of the relativistic sum of the individual eddy and bulk jet velocities and our viewing angle to the jet. The total observed flux is found by integrating the radiation from the eddies over the turbulent spectrum. We consider jets that contain turbulent eddies that have either standard Kolmogorov or recently derived relativistic turbulence spectra. We also account for the time delays in receiving the emission of the eddies due to their different simulated positions in the jet, as well as due to the varying beaming directions as they turn over. We examine these theoretical light curves and compute power spectral densities (PSDs) for a range of viewing angles, bulk velocities of the jet, and turbulent velocities. These PSD slopes depend significantly on the turbulent velocity and are essentially independent of viewing angle and bulk velocity. The flux variations produced in the simulations for realistic values of the parameters tested are consistent with the types of variations observed in radio-loud AGN as, for example, recently measured with the Kepler satellite, as long as the turbulent velocities are not too high.Comment: 18 pages, 6 figures; v3: in press at J Astrophys Astro

Trace metal requirements for microbial enzymes involved in the production and consumption of methane and nitrous oxide

Fluxes of greenhouse gases to the atmosphere are heavily influenced by microbiological activity. Microbial enzymes involved in the production and consumption of greenhouse gases often contain metal cofactors. While extensive research has examined the influence of Fe bioavailability on microbial CO_2 cycling, fewer studies have explored metal requirements for microbial production and consumption of the second- and third-most abundant greenhouse gases, methane (CH_4), and nitrous oxide (N_2O). Here we review the current state of biochemical, physiological, and environmental research on transition metal requirements for microbial CH_4 and N_2O cycling. Methanogenic archaea require large amounts of Fe, Ni, and Co (and some Mo/W and Zn). Low bioavailability of Fe, Ni, and Co limits methanogenesis in pure and mixed cultures and environmental studies. Anaerobic methane oxidation by anaerobic methanotrophic archaea (ANME) likely occurs via reverse methanogenesis since ANME possess most of the enzymes in the methanogenic pathway. Aerobic CH_4 oxidation uses Cu or Fe for the first step depending on Cu availability, and additional Fe, Cu, and Mo for later steps. N_2O production via classical anaerobic denitrification is primarily Fe-based, whereas aerobic pathways (nitrifier denitrification and archaeal ammonia oxidation) require Cu in addition to, or possibly in place of, Fe. Genes encoding the Cu-containing N_2O reductase, the only known enzyme capable of microbial N_2O conversion to N_2, have only been found in classical denitrifiers. Accumulation of N_2O due to low Cu has been observed in pure cultures and a lake ecosystem, but not in marine systems. Future research is needed on metalloenzymes involved in the production of N_2O by enrichment cultures of ammonia oxidizing archaea, biological mechanisms for scavenging scarce metals, and possible links between metal bioavailability and greenhouse gas fluxes in anaerobic environments where metals may be limiting due to sulfide-metal scavenging

Fearless: V Rosenberger and Tori Reynolds

“Getting Out,” the compelling prison drama by Marsha Norman, is opening tonight at 7:30pm on Kline Theater at Gettysburg, and bringing this play to life are two very fearless women. [excerpt

Old Remedies in the Biotechnology Age: Moore v. Regents

The California Supreme Court, by excluding a potential remedy, has eliminated many concerns generated by a lower court decision resolving rights to the cell line derived from John Moore\u27s spleen. Yet, the Supreme Court gave little attention to remedies that remain. The authors argue that a constructive trust, a remedy of considerable vintage and great flexibility, could be applied to achieve a just result in such circumstances without affecting the biotechnology world at large