Thermodynamics of the deposition of complex waxes and asphaltenes in crude oil

Peer reviewedPublisher PD

Urban food entrepreneurship, governance, and economic development in the post-industrial cities of Newark, New Jersey and Dayton, Ohio

The local governments of post-industrial cities in the US struggle to foster economic development and to find uses for underutilized or abandoned urban land and buildings. Partly in response to growing consumer interest in locally produced foods, food entrepreneurs are increasingly using these underutilized urban properties for farming or for producing value-added food products. However, sometimes intentionally and sometimes unintentionally, existing policies and regulatory regimes of local and state governments often restrict the ability of urban food entrepreneurs to grow. This dissertation documents urban food entrepreneurship in the post-industrial communities of greater Newark, New Jersey and greater Dayton, Ohio. The dissertation examines both: a) the characteristics of existing enterprises; and b) the network of laws, policies, regulations, and incentives that affect them. In both regions, entrepreneurs adapt vacant lots and former industrial and commercial buildings to produce a diversity of food products, including fruits and vegetables, gluten-free waffles, spice blends, beer, and wine. Entrepreneurs employ diverse organizational structures ranging from near hobby-level, informal enterprise to fully established for-profit businesses or non-profit organizations. In both regions, local government officials are cautiously supportive, an attitude that is tempered by restrictive regulations and policies. The dissertation concludes with a series of policy recommendations to local, and to a lesser extent state, governments interested in developing urban food entrepreneurship in their communities

THE CONCEPT OF ADAPTIVE BEHAVIOR IN AN INSTITUTIONAL SETTING

The present study is an attempt to objectify the subjective concept of adaptive behavior and to show the effect of institutionalization upon adaptive behavior. The development of an Adaptive Behavior Rating Sheet consisting of forty-five items is a major portion of this study. The Adaptive Behavior Rating Sheet was administered to a sample of ninety patients who, at the time of administration, had been in the Parsons State Hospital and Training Center (PSH&TC) between one year six months and two years six months. The raw scores were statistically reduced to comply with the five levels of adaptive behavior employed at PSH&TC. The mean obtained on each of the three chronological age groups in the sample was used as the median of Level III. By the standard deviation method the raw scores were fixed in the five levels of adaptive behavior. The Chi-Square method and Contingency Coefficient were used to determine the significance between the PSH&TC ratings and the Adaptive Behavior Rating Sheet. The final results are shown in the form of correlations and percentages. It is anticipated that this study may be of aid in the problem of determining the necessity for institutional referral in some cases and in dealing with the problems of parental acceptance and adjustment which are often present in such situations. In its present form, the rating sheet is considered to be a non-validated instrument. It is the investigator\u27s wish that others will find this instrument worthy of further evaluation to determine its empirical validity

Resonance Production in STAR

The recent results from resonance production in central Au+Au and p+p collisions at $\sqrt{s_{\rm NN}} =$ 200 GeV from the STAR experiment at RHIC are presented and discussed.Comment: 7 pages, proceedings 19th Winter Workshop on Nuclear Dynamics, Breckenridge, Colorado, USA, February 8-15, 200

System size dependence of strangeness production at 158 AGeV

Strange particle production in A+A interactions at 158 AGeV is studied by the CERN experiment NA49 as a function of system size and collision geometry. Yields of charged kaons, phi and Lambda are measured and compared to those of pions in central C+C, Si+Si and centrality-selected Pb+Pb reactions. An overall increase of relative strangeness production with the size of the system is observed which does not scale with the number of participants. Arguing that rescattering of secondaries plays a minor role in small systems the observed strangeness enhancement can be related to the space-time density of the primary nucleon-nucleon collisions.Comment: 5 pages, 3 figures, Presented at Quark Matter 2002, Nantes, Franc

SigTree: A Microbial Community Analysis Tool to Identify and Visualize Significantly Responsive Branches in a Phylogenetic Tree.

Microbial community analysis experiments to assess the effect of a treatment intervention (or environmental change) on the relative abundance levels of multiple related microbial species (or operational taxonomic units) simultaneously using high throughput genomics are becoming increasingly common. Within the framework of the evolutionary phylogeny of all species considered in the experiment, this translates to a statistical need to identify the phylogenetic branches that exhibit a significant consensus response (in terms of operational taxonomic unit abundance) to the intervention. We present the R software package SigTree, a collection of flexible tools that make use of meta-analysis methods and regular expressions to identify and visualize significantly responsive branches in a phylogenetic tree, while appropriately adjusting for multiple comparisons

Scaling of the charm cross-section and modification of charm pTp_{T} spectra at RHIC

Charm production from the direct reconstruction of $D^0$ ($D^0\to K\pi$ up to 2 GeV/$c$) and indirect lepton measurements via charm semileptonic decays ($c\to e+X$ at 0.9\textless$p_T$\textless5.0 GeV/$c$ and $c\to \mu+X$ at 0.17\textless$p_{T}$\textless0.25 GeV/$c$) at $\sqrt{s_{_{NN}}}=200$ GeV Au+Au collisions are analyzed. The transverse momentum ($p_T$) spectra and the nuclear modification factors for $D^0$ and for leptons from heavy flavor decays is presented. Scaling of charm cross-section with number of binary collisions at $\sqrt{s_{_{NN}}}=200$ GeV from d+Au to Au+Au collisions is reported.Comment: 4 pages, 4 figures, proceedings for Quark Matter 200

Monitoring sediment transfer processes on the desert margin

LANDSAT Thematic Mapper and Multispectral Scanner data have been used to construct change detection images for three playas in south-central Tunisia. Change detection images have been used to analyze changes in surface reflectance and absorption between wet and dry season (intra-annual change) and between different years (inter-annual change). Change detection imagery has been used to examine geomorphological changes on the playas. Changes in geomorphological phenomena are interpreted from changes in soil and foliar moisture levels, differences in reflectances between different salt and sediments and the spatial expression of geomorphological features. Intra-annual change phenomena that can be detected from multidate imagery are changes in surface moisture, texture and chemical composition, vegetation cover and the extent of aeolian activity. Inter-annual change phenomena are divisible into those restricted to marginal playa facies (sedimentation from sheetwash and alluvial fans, erosion from surface runoff and cliff retreat) and these are found in central playa facies which are related to the internal redistribution of water, salt and sediment

Optical properties of Southern Hemisphere aerosols: Report of the joint CSIRO/NASA study

This study was made in support of the LAWS and GLOBE programs, which aim to design a suitable Doppler lidar system for measuring global winds from a satellite. Observations were taken from 5 deg S to 45 deg S along and off the E and SE Australian coast, thus obtaining representative samples over a large latitude range. Observations were made between 0 and 6 km altitude of aerosol physical and chemical properties in situ from the CSIRO F-27 aircraft; of lidar backscatter coefficients at 10.6 micron wavelength from the F-27 aircraft; of lidar backscatter profiles at 0.694 microns at Sale, SE Australia; and of lidar backscatter profiles at 0.532 microns at Cowley Beach, NE Australia. Both calculations and observations in the free troposphere gave a backscatter coefficient of 1-2 x 10 to the -11/m/sr at 10.6 microns, although the accuracies of the instruments were marginal at this level. Equivalent figures were 2-8 x 10 to the -9/m/sr (aerosol) and 9 x 10 to the -9 to 2 x 10 to the -8/m/sr (lidar) at 0.694 microns wavelength at Sale; and 3.7 x 10 to the -9/m/sr (aerosol) and 10 to the -8 to 10 to the -7/m/sr (lidar) at 0.532 microns wavelength at Cowley Beach. The measured backscatter coefficients at 0.694 and 0.532 microns were consistently higher than the values calculated from aerosol size distributions by factors of typically 2 to 10