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- Creator:
- Kioussis, Nicholas G., Cooper, Bernard R., and Wills, John M.
- Description:
- A sharp change in the nature of the magnetic ordering has been observed on going from CeSb to CeTe, both of which have NaCl structures with a small decrease in lattice parameter. This is an interesting example of the way in which hybridization of partially delocalized f electrons with band electrons gives rise to highly unusual magnetic properties which show great chemical sensitivity. In the present paper we apply our previous ab initio treatment of hybridization-induced effects to investigate this striking change in magnetic behavior. We have performed self-consistent warped muffin-tin LMTO band calculations treating the Ce 4f states as resonance states that are constrained to be localized. Compared to CeSb, the anion-derived p bands in CeTe sink well below the Fermi energy, thus strongly changing the band-f hybridization. We have calculated the hybridization dressing of the crystal-field levels and the anisotropic two-ion exchange interaction and compared them with those calculated for CeSb and with experiment. A strong decrease in the two-ion interaction explains the drastic change in observed magnetic behavior between CeSb and CeTe.
- Resource Type:
- Article
- Identifier:
- 0021-8979
- Campus Tesim:
- Northridge
- Creator:
- Bermudes, David and Petersen, Ronald H.
- Description:
- Utilizing matings of single-spore isolates of collections of Panellus stypticus from far eastern USSR, New Zealand, Japan and eastern North America, the geographic range of interbreeding populations was ascertained to include all these locations. Culture bioluminescence and basidiome taste differed across this range, apparently independent of sexual compatibility.
- Resource Type:
- Article
- Identifier:
- 0027-5514
- Campus Tesim:
- Northridge
- Creator:
- Legg, Mark R., Kohler, Monica D., Weeraratne, Dayanthie S., and Shintaku, Natsumi
- Description:
- New mapping of two active transpressional fault zones in the California Continental Borderland, the Santa Cruz?Catalina Ridge fault and the Ferrelo fault, was carried out to characterize their geometries, using over 4500 line?km of new multibeam bathymetry data collected in 2010 combined with existing data. Faults identified from seafloor morphology were verified in the subsurface using existing seismic reflection data including single?channel and multichannel seismic profiles compiled over the past three decades. The two fault systems are parallel and are capable of large lateral offsets and reverse slip during earthquakes. The geometry of the fault systems shows evidence of multiple segments that could experience throughgoing rupture over distances exceeding 100?km. Published earthquake hypocenters from regional seismicity studies further define the lateral and depth extent of the historic fault ruptures. Historical and recent focal mechanisms obtained from first?motion and moment tensor studies confirm regional strain partitioning dominated by right slip on major throughgoing faults with reverse?oblique mechanisms on adjacent structures. Transpression on west and northwest trending structures persists as far as 270?km south of the Transverse Ranges; extension persists in the southern Borderland. A logjam model describes the tectonic evolution of crustal blocks bounded by strike?slip and reverse faults which are restrained from northwest displacement by the Transverse Ranges and the southern San Andreas fault big bend. Because of their potential for dip?slip rupture, the faults may also be capable of generating local tsunamis that would impact Southern California coastlines, including populated regions in the Channel Islands.
- Resource Type:
- Article
- Identifier:
- 2169-9003
- Campus Tesim:
- Northridge
- Creator:
- Ryan, Matthew
- Description:
- Our group has previously developed a new method for the preparation of ruthenium indenylidene olefin metathesis catalysts. The new method is based on the reaction between ruthenium starting materials and specially designed derivatives of propargyl alcohols (e.g., 1-(3,5-dimethoxyphenyl)-1-phenylprop-2-yn-1-ol). In an effort to study the chemistry of these organic precursors with starting materials of other transition metals, reactions between our propargyl alcohol and [RhCl(PiPr3)2]2 dimer were investigated. These studies led to the synthesis of new rhodium vinylidene, allenylidene and η5-indenyl complexes, which were characterized by 1H, 13C, and 31P NMR spectroscopy and high resolution mass spectrometry. X-ray crystal structures of the vinylidene and η5-indenyl complexes were also obtained. The η5-indenyl complex was obtained by adding HCl(aq) to the vinylidene compound. This represents the first synthesis of a rhodium η5-indenyl complex from a propargyl alcohol precursor. The formation of the η5-indenyl molecule suggests that a rhodium-indenylidene complex was generated along this pathway. However, isolation of any related rhodium indenylidene complex has been elusive. One of our long-term goals is to prepare an olefin metathesis catalyst based on iron, an abundant and innocuous transition metal. As a step toward this goal, we decided to test whether our organic precursor can be utilized to synthesize iron indenylidene complexes. Since Fe(CO)2(P(OMe)3)2 is isolobally analogous to a carbene H2C: fragment and since [Fe(CO)2(I)(PR3)2]-Na+ complexes are known to react with propargyl alcohols to afford vinylidene complexes, the reactions between [Fe(CO)2(I)(PR3)2]-Na+ (where R is OMe) and 1-(3,5-dimethoxyphenyl)-1-phenylprop-2-yn-1-ol were studied. Preliminary results related to the characterization of these reactions' products using FT-IR, 1H-, 13C-, and 31P-NMR and in some cases 2D-NMR are presented herein. One of the products is the putative diallenylidene complex Fe(CO)2(PR3)2(allenylidene)2 (where R is OMe). Additional research focused on reactions between [Fe(CO)2(I)(PR3)2]-Na+ and the labeled form of our organic precursor is underway in our laboratory.
- Resource Type:
- Thesis
- Campus Tesim:
- Northridge
- Department:
- Chemistry and Biochemistry
15505. No Tease Ya
- Creator:
- Fitak, Linda
- Description:
- ABSTRACT NO TEASE YA A GRADUATE TELEVISION COMEDY PILOT SCRIPT By Linda Susan Fitak Master of Fine Arts in Screenwriting No Tease Ya is a single-camera, half-hour TV comedy series, with a one-hour pilot, for streaming on Netflix, Hulu, or Amazon. The setting of the show is my home town of Elmhurst, Queens, in New York City. Having grown up in a Cuban family, surrounded by other Cubans, as well as Puerto Ricans, Columbians, and other Hispanics, in an Irish and Italian-American environment, I wondered what it would would happen if a band of Cubans took over the back room of my favorite pizzeria, Elmhurst Famous Pizza, to start their own dysfunctional news broadcast. What ensues is a zany combination of classic TV slapstick, such as I Love Lucy, the equal-opportunity political incorrectness of South Park, and the broad unpredictability of It's Always Sunny in Philadelphia. In order to expand the appeal of the series to both the U.S. industry, where any Hispanic, bi-lingual, multi-cultural show is in high demand, and the South American market, I provide here a Spanish version of my Pilot show, as well as the English version.
- Resource Type:
- Thesis
- Campus Tesim:
- Northridge
- Department:
- Cinema and Television Arts
- Creator:
- Kamel, Saad Mohamed
- Description:
- The detailed design of a pilot plant distillation unit is presented in this project. Brass was selected as the primary material of construction for the required components. The pilot plant consists of the following :units: a 50 liter reboiler vessel, a 4 inch diameter by 4 foot long packed column, a 16 square foot condenser, a 20 liter receiver, and a steam heat reboiler having 3 square feet of heat transfer area. The column may be ;packed with raschig rings or multi-turn helices as desired. The required utilities are: 50 p.s.i.g. steam, cooling water circulated at 30 p.s.i.g. with a temperature of 35°F, and a 110 v. AC supply.
- Resource Type:
- Thesis
- Campus Tesim:
- Northridge
- Department:
- Engineering
- Creator:
- Knell, Matthew
- Description:
- The purpose of this study is to investigate the environmental suitability of the trees at California State University, Northridge by analyzing their water use and native climate, together with other considerations such as whether they are native to the South Coast bioregion. Using a geographic information systems (GIS) analysis of all the trees on campus, a table of their frequency was compiled. Using these data, their native habitats were mapped and used to investigate their mean annual rainfall amounts relative to Northridge as well as how much warmer or cooler their mean annual temperatures are than Northridge. In addition, other important factors, such as biogenic volatile organic compound (BVOC) emissions, whether the trees provide shade, and whether they are native to this region, were investigated. Using all of these factors, trees were rated according to how beneficial they are for campus using three scales. The trees tended to be rated as moderately suitable in all three rating scales.
- Resource Type:
- Thesis
- Campus Tesim:
- Northridge
- Department:
- Geography and Environmental Studies
- Creator:
- Alonzo, Nancy
- Description:
- The purpose of this study is to examine the experiences of Latina students in higher education in order to identify what factors have contributed to their academic success. Despite the significant body of research that exists on the experiences of Latinas in higher education, there is limited literature focusing on what contributes to the academic success of Latinas pursuing an undergraduate degree at four-year public institutions. Thus, I am interested in identifying the contributing factors of the persistence and ultimately graduation of Latinas from institutions of higher education. By conducting twelve semi-structured interviews and two focus groups with Latina students in their senior year at a four-year institution, the study examined their shared experiences through a critical race theory lens. There are two primary research questions associated with the study; these are: 1.What are the factors that contribute to the persistence of Latina students attending a four-year public institution of higher education? 2. What are the institutional resources in place that provide support to Latina students while they pursue their undergraduate degree? The findings of the study can then provide an insight in what can be done to support Latina students during their baccalaureate attainment journey.
- Resource Type:
- Dissertation
- Campus Tesim:
- Northridge
- Department:
- Educational Leadership and Policy Studies
- Creator:
- Meade, Kayla
- Description:
- Metastatic spread of tumors in the breast account for over 95% of cancer-related deaths. Before cancer cells can survive in distant microenvironments, the tissues must be primed and acquire tumor-permissive properties. The primary tumor communicates with the pre-metastatic niche through the release of factors that recruit cells, such as mesenchymal stem cells (MSCs) and macrophages (MACs), to this new environment to aid in its remodeling. However, very little is known about the cell-cell communication that occurs during priming of the pre-metastatic niche. To address this, we use in vitro and in vivo methods with metastatic/non-metastatic mouse and human breast cancer cells (BCCs) to evaluate how these secretomes affect MAC polarization and MSC recruitment. We demonstrate that secretomes from metastatic BCCs promote tumor-permissive environments within the mouse lung and brain tissues, with evidence of MSC-MAC crosstalk only occurring in the brain. To support our in vivo data, we show that secretomes from metastatic BCC-educated MSCs reduce pro-inflammatory MACs and monocytes in vitro. Finally, bioinformatic analysis of secreted factors up-regulated in metastatic mouse BCCs indicated that LCN2, and associated genes, have poor prognostic significance when altered in breast cancer patients. These results indicate that MSCs may serve as an intermediate of tumor cell-induced reprogramming and priming of the pre-metastatic niche, suggesting a possible therapeutic target to inhibit this crosstalk and improve overall patient outcomes.
- Resource Type:
- Thesis
- Campus Tesim:
- Northridge
- Department:
- Biology
15510. The structure of intellect model : an investigation of its usefulness in language instruction
- Creator:
- Parker, Gwendolyn Young
- Description:
- The Structure of Intellect model, developed by J. P. Guilford and enhanced by the work of M. N. Meeker, presents a new concept of intelligence. Through Meeker's work with the Structure of Intellect (SOI) model there exists the potential for employing the model in the schools as an aid in classroom instruction: for diagnosis, for the basis of structuring individual lessons, and for remediation. This paper is a preliminary investigation of the diagnostic and prescriptive potential of the SOI model. Two classes of eighth grade students were used as subjects. One class, randomly selected, received supplemental exercises based on SOI abilities. It was hypothesized that this class, the experimental group, would achieve higher in language areas as measured by the Comprehensive Test of Basic Skills subtests in Reading Vocabulary, Spelling, and Language Mechanics than the group whose language instruction did not include exercises designed to strengthen SOI abilities. At the end of a 12-week period, a post-test was administered and scores for the two groups were compared using independent t. No significant difference was found between scores for the two groups at the .05 level.
- Resource Type:
- Thesis
- Campus Tesim:
- Northridge
- Department:
- Educational Psychology and Counseling