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Recent studies have focused on challenging deficit narratives and discourses perpetuating the criminalization of Latino men and boys. But even with this emerging literature, mainstream counter-narratives of young Latino boys and their attitudes towards manhood and masculinity stand in stark contrast to the dangerous and animalistic portrayals of Latino boys and men in the media and society. Utilizing a mixed-methods approach, the authors draw on the notion of counter-storytelling to explore how Latino boys try to reframe masculinity, manhood, and what they label as 'responsible manhood.' Counter-storytelling and narratives provide a platform from which to challenge the discourse, narratives, and imaginaries guiding the conceptualization of machismo. In their counter-narratives, Latino boys critiqued how they are raced, gendered, and Othered in derogatory ways. Keywords: counter-narratives, counter-storytelling, critical race theory, Latino males, mixed methods, masculinity, single-sex schools, urban education, Introduction In recent years growing scholarship and studies have focused on challenging deficit narratives and discourses perpetuating a criminalization of Latino men and boys. But even with this growing scholarship, [...]

For optical pulses shorter than 20 fs duration or highly dispersive materials in the visible range of the spectrum, high-order terms in the Taylor expansion for the wave vector, around the carrier frequency, should be considered. By expanding the wave vector near the center of optical frequency [[omega].sub.0] in a Taylor series up to the third-order approximation, we present an analytical method for calculating the electric field envelope of a pulse after it has propagated through a medium that contributes second- and third-order group velocity dispersion. To verify the method we present some examples for both 20 and 15 fs pulses propagating through pieces of glass made of low and high dispersive material. Limitations of the method are discussed. [c] 2010 Optical Society of America OCIS codes: 320.0320, 320.2250, 320.5520, 080.3630.

There are three main effects that affect the femtosecond pulse focusing process near the focal plane of a refractive lens: the group velocity dispersion (GVD), the propagation time difference (PTD), and the aberrations of the lens. In this paper we study in detail these effects generated by nonideal achromatic doublets based on a Fourier-optical analysis and Seidel aberration theory considering lens material, wavelength range, lens surface design, and temporally and spatially uniform and Gaussian intensity distributions. We show that the residual chromatic aberration in achromatic lenses, which has been neglected so far, has a considerable effect on the focusing of pulses shorter than 20 fs in the spectral range between the UV and IR, 300 to 1100 nm, and is particularly important in the blue and UV spectral range. We present a general fitted function for an estimation of the pulse stretching parameter, which depends only on the numerical aperture and focal length of the doublet as well as the wavelength of the carrier of the pulse. OCIS codes: 320.0320, 320.2250, 320.5520, 080.3630.

In this study, annual water application costs per unit area (ha) have been analyzed at the level of irrigation subunit in set sprinkler irrigation systems designed with pipes of different materials. In the cost, investment (pumping, pipes, sprinklers, ditches), energy, labor, maintenance, and water costs have been considered. Four systems were studied: one with buried pipes, in a permanent solid-set system, using: (a) polyvinyl chloride with buried pipes (PVCb), and three with pipes on the surface in surface solid-set systems, using (b) polyvinyl chloride pipes, (c) polyethylene pipes, and (d) aluminum pipes. The correct selection of the irrigation subunit size and shape can lead to a significant decrease in cost. The most economic irrigation subunits, among the four systems studied, were those formed by four laterals and a number of sprinklers per lateral of 10, 9, and 6 at 12 m X 12 m, 12 m X 18 m, and 18 m X 18 m spacing, respectively. The most influential factor on the annual water application cost was spacing. Considering total annual cost, water cost was the most important, followed by investment and energy. Among the analyzed systems, the permanent system using PVCb produced the lowest annual water application cost per unit area. DOI: 10.1061/(ASCE)0733-9437(2006)132:5(445) CE Database subject headings: Cost control; Irrigation; Sprinkler irrigation; Water management.

A sexually active Latino gay man describes how the surgical removal of his prostate gland affected his thoughts, feelings, attitudes and activities about sexuality in general and specifically about how the physical changes he experienced engendered emotional changes in his own struggles with sex and masturbation. The author focuses on the experience of orgasms without ejaculation, his changing views and experiences of sex, the feelings of aging engendered by a diagnosis of prostate cancer, and his search for support after diagnosis and treatment. KEYWORDS. Aging, cancer, ejaculation, gay, Latino, masturbation, orgasm, prostate, prostatectomy, sex

The efficiently effected intramolecular oxidative radical cyclization of primary alkyl iodides to aromatic nuclei using dicumyl peroxide is described. The procedure was also used to provide quick access to derivatives of the pharmacologically important 5,6,8,9,10, 11-hexahydroindolo[2,1-alpha]isoquinolines.

This study was conducted to determine whether the level of chromic oxide supplemented to diets containing gelatinized starch as the carbohydrate source affects digestibility, body composition, growth performances, and liver enzyme activities in gilthead sea bream, Sparus aurata, Gilthead sea bream fingerlings were fed diets containing gelatinized corn starch as the carbohydrate source and several levels of chromic oxide (0, 5, 10 and 20 g/kg) for 6 wk. No effect of dietary chromium level was detected on carbon, nitrogen, or dry matter digestibility. Calcium and phosphorus digestibility were higher in fish fed the diet supplemented with 5 g/kg chromic oxide than in fish fed the other supplemented diets. Dietary chromium did not affect dry matter, carbon, nitrogen, protein, or lipid concentrations in fish. However, fish fed 5 g/kg chromic oxide generally had higher levels of calcium, phosphorus, and ash than fish fed the other Cr-containing diets. Chromium concentration was significantly higher in fish fed the diets with 0.5 and 1% chromic oxide than in fish fed the control diet. Chromium supplementation of the diets did not affect the specific growth rate, the food efficiency ratio, the protein efficiency ratio, or, protein or nitrogen retention of the fish. Blood glucose and the activity of several liver enzymes involved in carbohydrate metabolism were unaffected by dietary chromic oxide. Alanine aminotransferase was lower in the fish fed the diet with 10 g/kg of chromic oxide than in unsupplemented controls. Our results indicate that chromic oxide can be used as a neutral marker in fish nutrition studies involving organic compounds, but not mineral salts. KEY WORDS: chromic oxide; digestibility; growth; carbohydrate metabolism; gilthead sea bream

This report considers a number of complaints by persons who maintain that law enforcement officials have violated their human and civil rights. The violations include illegal search of persons and [...]

An examination of the conformational analysis of tert-butylsulfonyl-substituted 1, 3-dioxanes and cyclohexanes in the solid state using X-ray diffraction and MMP2 calculations was presented. The remarkable stability observed in both cis-2-tert-butyl-5-(tert-butylsulfonyl)-1,3-dioxane and cis-4-tert-butyl-1-(tert-butylsulfonyl)cyclohexane was attributed to the S-O/C-C bond eclipsing produced from both steric and stereoelectronic interactions.

Background: Brachionus plicatilis is a complex of species, most of them not correctly described, dwelling in salt water, and commonly found close to the sea. Some studies have tried to [...]

Excellent yields of protected homoallylic amines are obtained using iodine to catalyze the three-component condensation of aldehydes, benzylcarbamate and allyltrimethylsilane. It is demonstrated that iodine has a very strong catalyst activity, and the procedure is a one-pot, rapid and a high yielding process.

I read your recent article about O'Neal Dozier, the member of the Broward Judicial Nomination Commission who persists in questioning judgeship candidates about their religious beliefs and affiliations ('Onward, Christian [...]