Gating of high-mobility InAs metamorphic heterostructures

We investigate the performance of gate-defined devices fabricated on high mobility InAs metamorphic heterostructures. We find that heterostructures capped with In$_{0.75}$Ga$_{0.25}$As often show signs of parallel conduction due to proximity of their surface Fermi level to the conduction band minimum. Here, we introduce a technique that can be used to estimate the density of this surface charge that involves cool-downs from room temperature under gate bias. We have been able to remove the parallel conduction under high positive bias, but achieving full depletion has proven difficult. We find that by using In$_{0.75}$Al$_{0.25}$As as the barrier without an In$_{0.75}$Ga$_{0.25}$As capping, a drastic reduction in parallel conduction can be achieved. Our studies show that this does not change the transport properties of the quantum well significantly. We achieved full depletion in InAlAs capped heterostructures with non-hysteretic gating response suitable for fabrication of gate-defined mesoscopic devices

Antitrust and Communications: Changes After the Telecommunications Act of 1996

The 1996 Telecommunications Act is a return to competition in telephony which existed at the beginning of the century. The enactment of the \u2796 Act will significantly change the application of the antitrust laws to communications activities. Prior to the enactment of the \u2796 Act, telecommunications companies were somewhat immunized from full application of the antitrust laws regarding mergers and acquisitions because of regulation by the Federal Communications Commission and the state public utility commissions. Now, telephone companies will be fully subject to antitrust scrutiny under three schemes: the Clayton Act, the Hart-Scott- Rodino Act, and the FCC public interest standard. The result is that parties seeking to merge or acquire a telecommunications company could find themselves in three separate venues with three separate standards. The 1996 act also preempts some state regulation of intrastate telephony. This may be unconstitutional under the 10th Amendment

Transformation of the Cyanobacterium Anacystis Nidulans 6301 with the Escherichia Coli Plasmid pBR322

Anacystis nidulans 6301 has been transformed in the light to ampicillin resistance with the plasmid pBR322. Permeaplasts prepared by 2-hr treatment of cells with lysozyme and EDTA are transformed with a 50-fold higher efficiency than that observed for cells. beta-Lactamase is present in A. nidulans transformed either with pBR322 or the plasmid pCH1 as evidenced by hydrolysis of the beta-lactam ring of Nitrocefin in extracts of transformants. beta-Lactamase also can be immunoprecipitated from extracts of [35S]methionine-labeled pBR322 transformants and coprecipitates with ribulose-bisphosphate carboxylase. Expression of the carboxylase is apparently amplified in pBR322 transformants as is that for several soluble proteins in pCH1 transformants. Chromosomal DNA per cell is increased about 6-fold after transformation of A. nidulans 6301 with either pBR322 or pCH1. A 4.3-kilobase-pair plasmid can be isolated from pBR322 transformants in addition to the endogenous plasmids pUH24 and pUH25

Remote sensing of Pacific hurricane and radiometric measurements from foam and slicks

There are no author-identified significant results in this report

The Legal Implications under Federal Law when States Enact Biology-Based Transgender Bathroom Laws for Students and Employees

Recently, numerous states have considered enacting transgender bathroom laws based on the individual’s biological sex. In some cases, when these biology-based laws have been enacted, the results have been lawsuits filed by students and employees claiming violations of Title IX and Title VII. Actually, the legal rights of transgender students and employees when using public restrooms or facilities has become a hot topic of debate in recent times. In addressing this hotly debated topic, this article focuses on the transgender bathroom issue at the state level and provides insight into the attempts by states to turn policy into law. First, the article surveys a sample of contemporary transgender bathroom legislation, proposed or adopted by states throughout the country. Afterwards, it discusses several federal cases in which courts addressed the legality of biology-based transgender bathroom laws in the public educational and employment sectors. Next, it explores the legal implications to be considered by states when determining whether to base their individual state law on biology or gender identity. Finally, the article concludes by arguing that transgender bathroom laws, if enacted, should be based on an individual’s gender identity. Such a result would address the discrimination issue and reduce potential liability for state agencies and other government entities

Near infrared reflectance spectra: Applications to problems in asteroid-meteorite relationships

An observing program designed to search for evidence of ordinary chondrite parent bodies near the 3:1 Kirkwood Gap was carried out in 1985 and 1986. Studies by Wisdom (1985), Wetherill (1985), and subsequent work by Milani et al. (1989) indicate that the 3:1 Kirkwood gap is the most probable source region for the majority of ordinary chondrite meteorites. The diversity of the reflectance spectra among this small data set is surprising. Early work by Gaffey and McCord (1978) showed that the inner region of the main asteroid belt is dominated by high albedo objects with mafic silicate surfaces. One would expect to see mostly spectra with 1- and 2-micron absorption bands based on this earlier work. Only 5 (of 12) spectra have these expected features. The distribution of taxonomic types presented by Gradie and Tedesco (1982) is in most cases a useful simplification of the compositional structure of the asteroid belt. The range of spectral characteristics seen with higher resolution in the near-IR has not been previously reported and is not represented in the standard asteroid taxonomy. Near-IR spectra contain valuable mineralogical information which enhances knowledge of the composition and structure of asteroids

Community-supported agriculture marketing performance: results from pilot market channel assessments in Colorado

Includes bibliographical references (pages 13-14).Due in large part to rising consumer interest, the number of farmers and ranchers selling through local food markets is growing. Community-supported agriculture (CSA) is a unique local food channel adopted by producers that was initially established as a strategy for producers to directly benefit from the season-long investments of buyers who align with their community-focused mission. Although the U.S. Department of Agriculture has long collected data to improve farm performance, information on specific marketing channels is missing, and in response, this research provides some of the first evidence of the heterogeneity of performance among CSAs. In a pilot approach to understanding the economics of CSAs relative to other direct marketing channels, we conducted an assessment process, incorporating 42 farms in Colorado between June 2016 and October 2017. Results showed that farms that incorporated CSA sales in their direct market portfolios tended to be smaller in scale and utilize more diverse markets. Although these CSA farms have lower average weekly sales, they have the highest average marketing profit margins compared to other direct market channels