Disarming Affirmative Action: Why the Concept as We Know It, Cannot Solve the Racial Issue

The following is a study on the use of affirmative action in higher education, particularly with respect to race. Because admission into institutions of higher education has traditionally been perceived as a reflection on one’s merit, the application of race-conscious affirmative action programs has undermined the meritorious prestige of a college education for graduates of all races alike. The use of an uncontrollable trait determined at birth as a factor in gaining admission to one of these institutions raised questions of fairness, legality, and purpose. The consequences of such a policy’s application raised further questions regarding fairness, its success, and its side effects. In evaluating these questions, this study recognized the necessity of defining its parameters and thus created an abstract philosophical ideal of equality upon which the rest of the study was based. The paper then summarized various affirmative action policies that actually have been implemented in theUnited States, based upon descriptions found in university literature and Supreme Court affidavits. The bulk of the paper was spent critiquing those policies on four main grounds. First, the policies were compared toUnited Stateslaw. Second, they were analyzed in terms of the fairness of using race as a determining factor. Third, in comparison with statistical data, various affirmative action programs’ effectiveness relative to the absence of any program was considered. Finally and most importantly, the paper raised issues about the negative consequences of affirmative action upon the minorities the program seeks to benefit. The remainder of the paper was spent offering alternatives for the future. The essential argument of the paper is that affirmative action is not the appropriate solution to the problem of equal opportunity. Not only does affirmative action contradict equality laws, it is unfair, it is disagreeable to Rawlsian political theory, and decades of its application have proven ineffective. Above all, the existence of race-conscious affirmative action casts a stigma on every successful individual of minority heritage, attributing their achievement solely to affirmative action rather than their own faculties. In conclusion, this study found that affirmative action is in fact more harmful than beneficial to minorities, and alternative race-blind proposals may be more effective ways of increasing college admission among underprivileged students

A Lignin-Rich Extract of Giant Reed (Arundo donax L.) as a Possible Tool to Manage Soilborne Pathogens in Horticulture: A Preliminary Study on a Model Pathosystem

Finding new sustainable tools for crop protection in horticulture has become mandatory. Giant reed (Arundo donax L.) is a tall, perennial, widely diffuse lignocellulosic grass, mainly proposed for bioenergy production due to the fact of its high biomass yield and low agronomic requirements. Some studies have already highlighted antimicrobial and antifungal properties of giant reed-derived compounds. This study aimed at investigating the potential of a lignin-rich giant reed extract for crop protection. The extract, obtained by dry biomass treatment with potassium hydroxide at 120◦C, followed by neutralization, was chemically characterized. A preliminary in vitro screening among several pathogenic strains of fungi and oomycetes showed a high sensitivity by most of the soilborne pathogens to the extract; thus, an experiment was performed with the model pathosystem, Pythium ultimum–zucchini in a growth substrate composed of peat or sand. The adsorption by peat and sand of most of the lignin-derived compounds contained in the extract was also observed. The extract proved to be effective in restoring the number of healthy zucchini plantlets in the substrate infected with P. ultimum compared to the untreated control. This study highlights the potential of the lignin-rich giant reed extract to sustain crop health in horticulture

Effects of Au nanoparticles on photoluminescence emission from Si-vacancy in diamond

We studied the coupling of diamond Si color centers with size-controlled Au nanoparticles obtained by chemical routes. The diamond samples, synthesized by Chemical Vapor Deposition, were polycrystalline films or isolated grains. The plasmonic responses of the Au nanoparticles were found to couple with the Ar+ laser frequency or with the frequency of the Si-defects photoluminescence (PL). When the PL of Si optical centers is resonant with the maximum of the Au extinction spectrum, a threshold behavior and a decrease of the PL band FWHM with increasing laser energy is detected, suggesting the transition from spontaneous to stimulated emission

Gold nanoparticles on nanodiamond for nanophotonic applications

We present here some recent results of a research focused on the prepn. of detonation nanodiamond/Au nanoparticles hybrid materials. Two different exptl. routes are followed for the decoration of diamond nanoparticles by Au nanoparticles, that are in turn prepd. by an innovative electroless approach. Structure and morphol. at the nanoscale level of the Au-on-nanodiamond deposits have been deeply investigated by electron microscopy (FE-SEM, HR-TEM) and diffraction (XRD) techniques. Optical properties of these systems have been detd. by performing scattering and UV-Vis absorption measurements, and by comparing the exptl. data with simulated extinction spectra. The results highlighted very interesting plasmonic and scattering behaviors, mainly related to the high refractive index of diamond

CVD-based techniques for the synthesis of nanographites and nanodiamonds

We report about some Chemical Vapor Deposition approaches used to produce a variety of C-sp2 and C-sp3 crystalline nanostructures. The methodologies developed in our laboratories provide custom-made solutions for the fabrication of specific carbon nanomaterials with properties tailored for applications in the field of nanotechnology

One-step growth and shaping by a dual plasma reactor of diamond nanocones arrays for the assembling of stable cold cathodes

Arrays of conical-shaped nanodiamond structures are formed on silicon substrate by a single-step CVD process from CH4/H-2 mixtures. The formation of these nanocones has been found to depend on interplay between growing and etching during the CVD process carried out in a dual-mode MW/RF plasma reactor. Morphology and structure of the conical-like systems can be controlled by varying the process parameters, and have been investigated by scanning electron microscopy (SEM), reflection high energy electron diffraction (RHEED) and micro-Raman spectroscopy. The Field Emission (FE) properties of different diamond nanocones arrays have been investigated and compared with those of analogous systems in order to assess the feasibility of the present nano-materials as electron emitters for cold cathodes. The FE behavior is discussed taking into account the structure of the different diamond nanocones

Hybrid Cnanotubes/Si 3D nanostructures by one-step growth in a dual-plasma reactor

Hybrid nanostructures consisting of Si polycrystalline nanocones, with an anemone-like termination coated with C-nanotubes bundles, have been generated on a (1 0 0) Si substrate in a dual mode microwave/radio-frequency plasma reactor. The substrate is both heated and bombarded by energetic H ions during the synthesis process. The nanocones growth is explained considering pull of the growing Si nanocrystalline phase along the lines of the electrical field, likely via a molten/recrystallization mechanism. The one-step building of the achieved complex 3D architectures is described in terms of dynamic competition between Si and C nanotubes growth under the peculiar conditions of kinetically driven processes

Jania adhaerens Primes Tomato Seed against Soil-Borne Pathogens

Managing soil-borne pathogens is complex due to the restriction of the most effective synthetic fungicides for soil treatment. In this study, we showed that seed priming with Jania adhaerens water-soluble polysaccharides (JA WSPs) was successful in protecting tomato plants from the soil-borne pathogens Rhizoctonia solani, Pythium ultimum, and Fusarium oxysporum under greenhouse conditions. WSPs were extracted from dry thallus by autoclave-assisted method, and the main functional groups were characterized by using FT-IR spectroscopy. WSPs were applied by seed treatment at 0.3, 0.6 and 1.2 mg/mL doses, and each pathogen was inoculated singly in a growing substrate before seeding/transplant. Overall, WSPs increased seedling emergence, reduced disease severity and increased plant development depending on the dose. Transcriptional expression of genes related to phenylpropanoid, chlorogenic acid, SAR and ISR pathways, and chitinase and beta-1,3 glucanase activities were investigated. Among the studied genes, HQT, HCT, and PR1 were significantly upregulated depending on the dose, while all doses increased PAL and PR2 expression as well as beta-1,3 glucanase activity. These results demonstrated that, besides their plant growth promotion activity, JA WSPs may play a protective role in triggering plant defense responses potentially correlated to disease control against soil-borne pathogens

CVD-based techniques for the synthesis of nanographites and nanodiamonds

We report about some Chemical Vapor Deposition approaches used to produce a variety of C-sp2 and C-sp3 crystalline nanostructures. The methodologies developed in our laboratories provide custom-made solutions for the fabrication of specific carbon nanomaterials with properties tailored for applications in the field of nanotechnology

TIMPs and MMPs expression in nasal polyps

Nasal polyposis is a chronic inflammatory disease characterized by inflammatory invasion of nasal mucosa, changes in cells differentiation, thickness reduction and remodelling of basal membrane, hyperplasia of mucous glands, extracellular matrix deposition. MMPs shown a proteolytic activities towards several components of extracellular matrix, play an important role in connective tissue remodeling. MMPs are a proteins family including 25 isoforms of Ca2+ and Zn 2+ dependant endopeptidases. MMPs are inactive and can be activated by proteases removing some amino acids. Tissue inhibitors of matrix metalloproteinases (TIMPs) are natural inhibitors of MMPs. TIMPs inhibiting MMPs activation by MMPs/TIMPs complexes: TIMP-1 and TIMP-2 are soluble protein, inhibiting mainly MMP-9 and 2, TIMP-3 is mainly associated to ECM. The balance between MMP/TIMP is very critical in matrix remodeling and various physiological processes. Imbalances between these enzymes and inhibitors may cause pathological processes such as chronic inflammation, degenerative disease and tumour invasion. In our study we aimed at demonstrating MMP/TIMP imbalance in nasal polyposis, similar to other pathological processes. The complex structure of polyp formation is still unknown. In this research nasal polyp specimens were obtained from 96 patients with nasal polyposis during endoscopic sinus surgery. Bullous middle turbinates with normal appearing mucosa of fifteen non-smoker patients free of any allergic or infectious diseases of nose or sinuses were used as controls. Patients were divided in three groups: patients of group A have morphostructural polyps; patients of group B have syndromic polyps; patients of group C have allergic polyps. We investigate MMP-1, MMP-2, MMP-3, MMP-9, TIMP-1, TIMP-2, TIMP-3 expression in our specimens using immunoistochemistry, Western Blot Analysis and RT-PCR methods. Our results shown a interesting relashionship between MMPs/TIMPs imbalance and nasal polyps formation