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Trachelas ductonuda Rivera-Quiroz & Alvarez-Padilla, 2015, sp. n.
No full textTrachelas ductonuda sp. n. Figures 18–34 Type material. ♂ holotype: MEXICO: Veracruz: Atotonilco de Calcahualco, near the Pico de Orizaba National Park (19 °08' 17.4 "N, 97 ° 12 ' 16.2 "W, 2 300 m), collected 4–14 October 2012 by U. Garcilazo-Cruz (CAFC-UNAM). ♀ allotype from the same locality, collected 15–24 February 2013 by F. Alvarez-Padilla (CAFC-UNAM). Other material examined: N = 2. MEXICO: Veracruz: Atotonilco de Calcahualco, Plot II, 19 °08' 17.4 "N, 97 ° 12 ' 16.2 "W, 2 300 m, 4–14 October 2012, 1♂ (CAFC-UNAM); 15–24 February 2013, 1♀ (CAFC-UNAM). Etymology. The species epithet, a noun in apposition, from the Latin ducto (duct) and nudum (tangle) refers to the extremely convoluted copulation duct. Diagnosis. The male of T. ductonuda sp. n. is similar to T. latus and T. hamatus in the E hook-shaped and the size of the palpal tibia in relation to the cymbium. Differs from these species by the E having a thicker base and longer hook (Fig. 34; Platnick & Shadab 1974 a: fig. 84) and by having a straight RTA instead of hooked in a ventral view (Fig. 34; Platnick & Shadab 1974 a: fig. 80) respectively. Female genitalia is similar to T. spinulatus F.O. P.-Cambridge 1899 and T. latus by having asymmetrical and complexly coiled CD, FD relatively straight and uncoiled, and Ss smaller than the S. It differs from these two species by having longer CD, S oval and considerably wider than the Ss, and atrium with two asymmetric genital openings (Figs 30, 31; Platnick & Shadab 1974 a: figs 78, 79, 82, 83). Description. Male: Total length 6.63. Cephalothorax: 2.8 long. Carapace glabrous, without pattern, dark uniform coloration (Fig. 19). Lateral and dorsal surfaces same coloration, cephalic area higher than thoracic (Fig. 21). Sternum same color as carapace (Fig. 23). AME closer together than to ALE. Clypeus about one diameter of AME. All eyes subequal in size (Fig. 18). AER straight, PER procurved in dorsal view. Endites same color as coxa I. Labium same color as carapace, longer than wide, labium about 3 / 4 of endite length. Chelicera same color as carapace, greatly sclerotized, with rugose cuticle. Three promarginal and two retromarginal teeth. Abdomen: 2.8 long, background pale grey. Dorsal surface without scutum, pattern with an anterior longitudinal dark mark and reticulated clearer patches (Fig. 19). Ventral surface with a darker median rectangular area. Epigastric area and book lung covers pale yellow, slightly sclerotized, middle section darker grey (Fig. 23). Leg formula I-II-IV-III, light yellow, first pair brown. Twenty-three VCT, 27 VCM. Pedipalp and bulb yellow (Figs 20, 22). Tibia short about 0.3 times length of cymbium. RTA large, about 0.4 times width of tibia. E hooked with no basal coil (Figs 32–34). Female: as in male except as noted (Figs 25, 27, 29). Total length 7.5. Cephalothorax: 3.5 long. Sternum rugose, same color as carapace (Fig. 29). Abdomen: 3.8 long. Five VCT, 8 VCM. Epigynum reddish, cuticle semitransparent, atrium with two separated and asymmetrical CO on middle portion (Fig. 26); CD extremely long and slender, irregularly coiled (Figs 28, 30– 31). Distribution. Known only from the type locality (Fig. 52). Biology. Both type specimens were collected in a Quercus forest with secondary plant growth. Adult specimens were found in October 2012 and February 2013. Specimens were caught by beating and direct collecting over vegetation.Published as part of Rivera-Quiroz, F. Andrés & Alvarez-Padilla, Fernando, 2015, Three new species of the genus Trachelas (Araneae: Trachelidae) from an oak forest inside the Mesoamerican biodiversity hotspot in Mexico, pp. 95-110 in Zootaxa 3999 (1) on pages 100-102, DOI: 10.11646/zootaxa.3999.1.6, http://zenodo.org/record/23945
Trachelas odoreus Rivera-Quiroz & Alvarez-Padilla, 2015, sp. n
No full textTrachelas odoreus sp. n Figures 35–51 Type material. ♂ holotype: MEXICO: Veracruz: Atotonilco de Calcahualco, near the Pico de Orizaba National Park (19 °08' 30.2 "N, 97 ° 12 ' 21.5 "W, 2 238 m), collected 21–30 May 2012 by F.J. Salgueiro-Sepulveda (CAFC- UNAM). ♀ allotype from the same locality (19 °08' 17.4 "N, 97 ° 12 ' 16.2 "W, 2 300 m), collected 4–14 October 2012 by F.J. Salgueiro-Sepulveda (CAFC-UNAM). Other material examined. N = 3. MEXICO: Veracruz: Atotonilco de Calcahualco, Plot I, 19 °08' 30.2 "N, 97 ° 12 ' 21.5 "W, 2 238 m, 21–30 May 2012, 1♂ (CAFC-UNAM); 4–14 October 2012, 1♀ (CAFC-UNAM). Same locality, Plot II, 19 °08' 17.4 " N, 97 ° 12 ' 16.2 "W, 2 300 m, 4–14 October 2012, 1♀ (CAFC-UNAM). Etymology. The species epithet, formed from the Greek odontos (tooth) and the Dutch reus (big/giant), refers to the relatively large fangs that characterize Trachelas. Diagnosis. The male of T. odoreus sp. n. is similar to T. lanceolatus and T. crassus sp. n. by having a large palpal tibia at least 0.6 times as long as the cymbium (Figs 15, 49; Platnick & Shadab 1974 a: fig. 73), but it differs from these species by the E longer and curved clockwise (Fig. 17; Platnick & Shadab 1974 a: fig. 72) and having a longer RTA with hooked tip on ventral view (Figs 17, 51; Platnick & Shadab 1974 a; fig. 72), respectively. Female genitalia is similar to T. bulbosus F.O. P.-Cambridge, 1899, by having a wide atrium with two symmetrical genital openings placed anteriorly, CD irregularly coiled and Ss very small compared to the S (Figs 47, 48: Platnick & Shadab 1974 a: figs 70, 71). It differs from this species by having a heart-shaped atrium in ventral view (Fig. 43), symmetrical CD, FD thinner, and S length almost two and a half times the width (Figs 47, 48; Platnick & Shadab 1974 a: figs 70, 71). Description. Male: Total length 6.62. Cephalothorax: 3.5 long. Carapace glabrous without pattern, coloration light brown, darker in ocular area, becoming lighter towards posterior edge, thoracic grooves deep, darker in relation to surrounding cuticle (Fig. 36). Lateral and dorsal surfaces same color, cephalic area higher than thoracic (Fig. 38). Sternum glossy, almost same color as rear portion of carapace, darker at margins (Fig. 40). AME closer together than to ALE. Clypeus about one diameter of AME. All eyes subequal in size (Fig. 35). AER straight, PER procurved in dorsal view. Endites and labium dark brown, longer than wide, labium length ca. 3 / 4 of endites and darker in coloration. Chelicera heavily sclerotized, rugose cuticle, brown, darker than carapace. Three promarginal and two retromarginal teeth. Abdomen: 2.75 long, background pale grey. Dorsal surface dark yellow without scutum or pattern (Fig. 36). Ventral surface light yellow, booklung covers pale yellow, epigastric area slightly sclerotized (Fig. 40). Leg formula I-II-IV-III, light yellow, first pair slightly darker. Nineteen VCT, 30 VCM. Pedipalp light yellow, bulb same color as tibia (Figs 37, 39), tibia long, about 0.6 times length of cymbium, RTA short and slightly hooked, about 0.3 times width of tibia (Figs 49–51). Female: as in male except noted. Total length 9.7. Cephalothorax: 4.0 long. Carapace dark red, slightly darker in the eye area (Fig. 42). Sternum same color as rear portion of carapace (Fig. 46). Chelicera same color as anterior portion of carapace (Fig. 41). Abdomen: 5.5 long, background dark gray without scutum or characteristic pattern (Fig. 42). Ventral surface dark grey, booklungs slightly red, epigastric area highly sclerotized (Fig. 46). Legs reddish-yellow, first pair darker. VCT absent, 9 VCM. Epigynum ventrally dark red, atrium big, heart shaped, two separated copulatory openings placed anteriorly (Fig. 43); CD extremely long and slender, irregularly curled (Fig. 47). Oval elongated S that connects to a relatively short and stout FD, directly under S a bulge in the FD forms a small Ss (Fig. 48). Variation. Female: total length mean 9.7 (range: 8.9 to 10.6), carapace length mean 4.0 (range: 4.0 to 4.1. Female with no VCT present, VCM mean 7.5 (range: 6 to 9). Distribution. Known only from the type locality (Fig. 52). Biology. All specimens were collected in a Quercus forest with secondary plant growth. Adult specimens were found in May and October 2012. Specimens were caught by beating and direct collecting over vegetation.Published as part of Rivera-Quiroz, F. Andrés & Alvarez-Padilla, Fernando, 2015, Three new species of the genus Trachelas (Araneae: Trachelidae) from an oak forest inside the Mesoamerican biodiversity hotspot in Mexico, pp. 95-110 in Zootaxa 3999 (1) on pages 103-107, DOI: 10.11646/zootaxa.3999.1.6, http://zenodo.org/record/23945
Mary Rivera, Albina Sanchez Rivera, Jerry Rivera, Eddie Garcia holding Richard Garcia; little girls in front Albania Rivera, Melissa Rivera
No full textGroup of people standing under a tree next to an adobe building L-R: Mary Rivera, Albina Sanchez Rivera, Jerry Rivera (Mary's brother), Eddie Garcia (Mary's first husband) holding Richard Garcia; little girls in front (L-R): Albania Rivera, Melissa Rivera (Mary's sisters) Photo taken at house on East Sanchez Road. Dog under tre
Raw images corresponding to article "Relative assessment of cloth mask protection against ballistic droplets: a frugal approach"
No full textThe images correspond to scans used to obtain the data reported on V. Márquez-Alvarez, J. Amigó-Vega, A. Rivera, A. J. Batista-Leyva, and E. Altshuler, Relative assessment of cloth mask protection against ballistic droplets: A frugal approach. PLOS ONE 17, e0275376 (2022). doi: 10.1371/journal.pone.0275376.If you use this dataset, please cite both the dataset and the journal article mentioned above
Alfred A. Alvarez Interview
No full textLTC Alfred A. Alvarez was born in 1924 and grew up in Chelsea, Massachusetts. He enlisted in July 1942 and following stateside training joined the 1st Infantry Division in England. He took part in the Normandy invasion, hitting "Easy Red," Omaha Beach on D-Day. He subsequently saw action in the Champagne campaigns and at Hurtgen Forest, the Battle of the Bulge, and in Czechoslovakia. Alvarez re-enlisted in the Reserves in 1945 and during his thirty-two years of duty served combat tours in Korea and Vietnam and was deployed to Central and South America. He was inducted into the U. S. Army OCS Hall of Fame in April 2003. This interview covers his service in World War II
Efficiency enhancement of spark-ignition engines using a Continuous Variable Valve Timing system for load control
No full textIn this work, a Continuous Variable Valve Timing (CVVT) system for load control in spark-ignition engines is proposed, analyzed, and compared with a conventional Throttle-controlled Engine. An analytical model for ideal processes is initially developed to study the performance of both cycles during part-load operation. Then, irreversibilites comprising charging dilution effects and heat losses during compression and expansion strokes are considered to approach a more realistic engine operation. At full-load, both cycles reach a maximum efficiency corresponding to that of an Otto cycle. However, a reduction in the efficiency occurs at part-load operation, with the CVVT Engine having a higher efficiency with respect to the Throttled Engine due to its unthrottled load control mechanism, which avoids power consumption caused by friction during air intake. It is found that charge dilution exerts a strong impact in the net power output and efficiency of both cycles. Additional reductions in power output and efficiency are caused by heat losses. At part-load operation, lower temperatures and pressures are reached in the CVVT Engine, which imply lower mechanical stresses that favor engine lifetime. It also represents a potential for additional efficiency enhancement via increasing combustion temperature. Finally, a fuel economy estimation analysis is carried out to provide quantitative assessment about the economic advantage of the proposed CVVT Engine. From this analysis, a fuel economy increment of up to 4.1% is obtained for a CVVT Engine with respect to a Throttled Engine at a 20%-30% load, which is typical of a real vehicle engine operation. © 2018 Elsevier Lt
Elizabeth Hayes Alvarez: Valiant Woman [Audio interview]
No full textIn contemporary American culture the Virgin Mary is associated with Catholic devotion and worship. Because of this, it should come as a surprise to many readers that the mother of Jesus was a general cultural icon in the latter half of nineteenth century Christian America. Temple professor Elizabeth Hayes Alvarez details this history in her new book, The Valiant Woman: The Virgin Mary in Nineteenth Century American Culture (University of North Carolina Press, 2016). Images and references to Mary proliferated in popular magazines and on the walls of modest and fashionable homes, appealing to both Protestant and Catholic audiences. The Civil War, industrial revolution, and westward expansion transformed the United States. The rise of major urban centers like New York, Philadelphia, Chicago, and St. Louis drew in rural migrants and immigrants, unsettling religious, gender, and social norms. In these early years of mass society when the old agrarian ways were slipping away, the focus on the Virgin Mary offered a safe and familiar way of talking about and negotiating new female roles in this changing social landscape. Professor Alvarez traces the career of Mary from the declaration of the Immaculate Conception by Pope Pius IX in 1854 through its fiftieth anniversary in 1904. Fred Rowland spoke to Elizabeth Hayes Alvarez about her book on November 7, 2016.Temple University. College of Liberal ArtsTemple University. LibrariesLearning & Research ServicesReligionAudacityAudacit
Alvarez-Amezquita, Jose -- 1966-68 -- Correspondence, Individual -- letter, 1966-08-23
No full textLetter from Alvarez-Amezquita, Jose to Sabin, Albert B. dated 1966-08-23.Sabin Collection Fair Use Policy</a
Ramos-Alvarez, Manuel -- ND-1992 -- Correspondence, Individual -- letter, 1979-05-15
No full textLetter from Ramos-Alvarez, Manuel to Sabin, Albert B. dated 1979-05-15.Sabin Collection Fair Use Policy</a
Ramos-Alvarez, Manuel -- ND-1992 -- Correspondence, Individual -- letter, 1991-03-31
No full textLetter from Ramos-Alvarez, Manuel to Sabin, Albert B. dated 1991-03-31.Sabin Collection Fair Use Policy</a
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