9,849 research outputs found
Robust control of an intelligent truss structure
No full textThis paper presents an active damping control of an intelligent truss structure using pair of piezoelectric stack actuators collinear with force transducers and a H¥ robust control strategy. A finite element model of the structure is constructed using the three-dimensional frame elements considering electro-mechanical coupling between the host structure and piezoelectric stack actuator. In this paper, the active member placement is determined by using the fraction of modal strain energy as an optimal index. The performance objectives and robustness to high frequency unmodeled dynamics are considered in the controller design. The purpose of the controller is to minimize the effect of disturbances on the entire structure. The numerical simulation results demonstrate that the active members of the structure and the robust control strategy can effectively reduce truss vibrations
ABSOLUTE RO-VIBRATIONAL INTENSITIES FOR THE VIBRATIONAL BANDS OF
No full text C. Chackerian. Jr. J Chem Phys 85, 1200 (1986) C. Chackerian. Jr. C. W Bauschlicher, S. R. Langhoff. A. Lopes-Pineiro and R. H. Tipping (to be published)Author Institution: NASA-Ames Research Center, Moffett Field; Leboratotre d'lnfrarouge associ\'e au CNRS, Universit\'e de Paris-sud; Departmento de Outmica Fisica, Facultad de Ciencias, Universided de Extremedura; Department of Physics and Astronomy, University of AlabamaWe determine absolute ro-vibrational line intensities for vibrational bands of the astrophysically important species. NH, indepently of any information on its molecular concentration. To this end we measure relative line intensities across bends. The effect of vibration rotation interaction on the line intensities then allows a direct determination of the derivative of the electric-dipole fundamental band transition . The results of these experiments are then compared to theoretical obtained via high quality ab initu calculations of the electric dipole moment function
Nephochaetopteryx limpidipennis Lopes
No full textNephochaetopteryx limpidipennis Lopes (Figs 16, 37C, F) Nephochaetopteryx limpidipennis Lopes, 1976: 70–72 (descriptions of male and female). Type locality: Mexico, Sonora, Bahia San Carlos. Other references: Pape (1996: 260; catalog); Mello-Patiu & Santos (2001: 307; description of female). Type material examined. HOLOTYPE ♁ (CAS): MEX.: Sonora / Bahia San Carlos / 1.III.1936 / P.H. Arnaud Jr. [printed on rectangular white label] // PAUL H. ARNAULD, JR. / COLLECTION / Gift to California / Academy of Sciences / San Francisco, CALIF. [printed on rectangular white label] // HOLOTYPUS [handwritten on rectangular red label] // Nephochaetopteryx / limpidipennis / Holotypus ♁ / Det. H.S. Lopes [printed on rectangular white label] // California Academy / of Sciences / Type No. 12390 [printed and handwritten on rectangular white label]. [Holotype in good condition, with cleared abdomen glued to the specimen label and terminalia and sternite 5 glued to a card triangle pinned beneath the specimen.] PARATYPES (3). ♀ (CAS): MEX.: Sonora / Alamos / 21.II.1936 / P.H. Arnaud Jr. [printed on rectangular white label] // PAUL H. ARNAULD, JR. / COLLECTION / Gift to California / Academy of Sciences / San Francisco, CA- LIF. [printed on rectangular white label] // Collected at / flr [flower] Mangifera / indica [printed on rectangular white label] // Allotypus [handwritten on rectangular red label] // Nephochaetopteryx / limpidipennis / n. sp. Allotypus ♀ / Det. H.S. Lopes [printed on rectangular white label] // Collection of the / CALIFORNIA ACADEMY / OF SCI- ENCES, San / Francisco, California [printed on rectangular white label] [paratype in good condition, lacking left mid leg, with cleared abdomen glued to specimen label and terminalia and sternites glued to a card triangle pinned beneath the specimen]. ♁ (MNRJ): MEX.: Sonora / Alamos / 5.I.1971 / P.H. & M. Arnaud / Collectors [printed on rectangular white label] // Paratype [printed on rectangular green label] // Nephochaetopteryx / limpidipennis / Paratypus ♁ / Det. H.S. Lopes [printed and handwritten on rectangular white label] [paratype in good condition, with left wing broken, cercus and sternite 5 glued to a card triangle pinned below the specimen and missing phallus and gonites]. ♀ (MNRJ): MEX.: Sonora / Alamos / 21.II.1963 / P.H. Arnaud Jr. [printed on rectangular white label] // Collected at / flor [= flower] Mangifera / indica [printed on rectangular white label] // PAUL H. ARNAULD, JR. / COLLECTION / Gift to California / Academy of Sciences / San Francisco, CALIF. [printed on rectangular white label] // Paratype [printed on rectangular green label] // Nephochaetopteryx / limpidipennis / Paratypus ♀ / Det. H.S. Lopes [printed and handwritten on rectangular white label] [paratype in good condition, missing right mid leg, with abdomen and terminalia cleared and preserved in glycerin in a microvial pinned beneath the specimen]. Additional material examined. Mexico. Chiapas: San Cristobal de las Casas, 20. V.1969, leg. B. V. Peterson (1 ♁, MNRJ). Jalisco: Puerto Vallarta, 31.XII.1970, leg. P.H. Arnaud & M. Arnaud (1 ♀, MNRJ). Redescription. Male. Length = 4.0– 5.5 mm (n = 3). Head. Fronto-orbital and parafacial plates, postocular strip, gena and postgena with golden microtomentum. Frontal vitta black, with basal half or entirely reddish-brown. Six frontal setae. Palpus brown or black. Thorax. Chaetotaxy: dorsocentrals 2+4 (first two weak); intra-alars 2+2; supra-alars 2+3, notopleurals 2 subprimaries; anepisternals 5; merals 5. Ctenidium consisting of four spines. Mid femur with two median setae and without a posteroventral differentiated seta. Wing hyaline; vein R setulose dorsally to crossvein r-m. 4+5 Abdomen. Tergites brown with a band of grayish microtomentum on anterior 4/5 of dorsal and lateral surfaces. Sternites 1 to 4 brown with yellowish setulae and with marginal setae. Terminalia. Sternite 5 brown, with small setae restricted to posterior half; cleft deep, nearly reaching middle of sternite; lobe rounded and with a tuft of short setulae; arms divergent, small and narrow, with rounded apex (Fig. 16E). Cercus shorter than epandrium, with cercal prongs slight curved posteriorly with rounded apex bearing a small pointed projection on posterior margin in lateral view (Fig. 16A). Cercus with lateral margin of cercal base projected laterally and cercal prongs separated and parallel in dorsal view (Fig. 16B). Cercal prong with a preapical tuft of setulae; long and thick setae restricted to cercal base (Figs 16 A–B). Surstylus conical with rounded apex; anterior margin concave, with a narrow strip of setulae close to posterior margin of basal half and with small setae restricted to distal half (Fig. 16A). Pregonite short (shorter than postgonite), with distal half perpendicular to base, with few pointed setae on posterior margin (Fig. 16C). Postgonite tapering distally and curved anteriorly, with small pointed setae and with a strong median seta on anterior margin (Fig. 16D). Basiphallus short, about half as long as distiphallus, inverted L-shaped (Fig. 16F). Distiphallus L-shaped, with apical surface concave (Fig. 16F). Ventral margin of distiphallus corrugated with pointed projections (Fig. 16F). Vesica L-shaped, with apical portion serrated and with a middle triangular projection in basal half (Fig. 16F). Inner process of vesica narrowed (Fig. 16F). Lateral and median styli elongate, and both inserted close to apical surface of distiphallus (Fig. 16F). Female. Differs from male as follows: palpus spatulate (Fig. 37F), tergite 5 reddish with golden microtomentum (Fig. 37C). Terminalia as described by Mello-Patiu & Santos (2001, figs 11–12, 34). Distribution. NEARCTIC—Mexico (Sonora). NEOTROPICAL—Mexico (Chiapas, Jalisco). Remarks. The female of this species differs from the others in the genus in having tergite 5 reddish with golden microtomentum and the palpus enlarged and spatulate. In the other species, tergite 5 is brown with golden or grayish microtomentum and the palpus is club-shaped. However, the females of many species remain unknown. The distiphallus of this species shows apical surface with a prominent concavity and ventral margin corrugate and with pointed projections, features found only in N. fuscipennis. However, N. fuscipennis differs from N. limpidipennis in having an elongate surstylus (see remarks under N. fuscipennis). Males and females of this species were collected on mango flowers (Mangifera indica: Anacardiaceae) in Mexico. This is the first record of N. limpidipennis from Chiapas and Jalisco.Published as part of Carvalho-Filho, Fernando Da Silva, Esposito, Maria Cristina & Mello-Patiu, Cátia Antunes De, 2021, Revision of Nephochaetopteryx Townsend, 1934 (Diptera: Sarcophagidae), pp. 1-83 in Zootaxa 4928 (1) on pages 38-40, DOI: 10.11646/zootaxa.4928.1.1, http://zenodo.org/record/454440
V. V. Tarnovskyi jr. and M. F. Bilyashivskyi: research and preservation historical and cultural heritage
No full textУ статті коротко висвітлена історія взаємин В. В. Тарновського-молодшого і
М. Ф. Біляшівського. Автор представляє основні аспекти, які стосуються аналізу
розкопок на Княжій горі у 1891-1892 рр., а також формування археологічного зібрання чернігівського мецената.В статье кратко освещена история отношений В. В. Тарновского-младшего и
Н. Ф. Биляшивского. Автор представляет основные аспекты, касающиеся анализа
раскопок на Княжей горе в 1891–1892 гг., а также формирования археологического собрания черниговского мецената.The article gives a brief description of the history of relations V. V. Tarnovskyi Jr. and
M. F. Bilyashivskyi, who highly opinion appreciated each other’s, often consulted, who have
exchanged objects of antiques and artifacts and the information about them
The author represents the main aspects, which touch 1) the archaeological activities
Bilyashivsky’s, which coincides with the beginning of his excavations on Knyazha Gora with
financial support Tarnovsky’s Jr.; 2) the analysis of the excavation Knyazha Gora in 1891-1892
gg.; 3) the formation of the archaeological collection of Chernigov patron; 4) the preparation
of the collection and «The catalogue of Ukrainian antiquities the V. V. Tarnowsky’s collection»
to the beginning of XI Archaeological Congress in 1899 in Kyiv. As a result, the materials were systematized under the historical sequence of eras and
geographical the items and divided into 3 sections: prehistorical, great princely and cossack. So Tarnowskyi Jr. and Bilyashivskyi found a rare persistence concerning of research and preservation historical and cultural heritage
V. V. Tarnovskyi jr. and M. F. Bilyashivskyi: research and preservation historical and cultural heritage
No full textУ статті коротко висвітлена історія взаємин В. В. Тарновського-молодшого і
М. Ф. Біляшівського. Автор представляє основні аспекти, які стосуються аналізу
розкопок на Княжій горі у 1891-1892 рр., а також формування археологічного зібрання чернігівського мецената.В статье кратко освещена история отношений В. В. Тарновского-младшего и
Н. Ф. Биляшивского. Автор представляет основные аспекты, касающиеся анализа
раскопок на Княжей горе в 1891–1892 гг., а также формирования археологического собрания черниговского мецената.The article gives a brief description of the history of relations V. V. Tarnovskyi Jr. and
M. F. Bilyashivskyi, who highly opinion appreciated each other’s, often consulted, who have
exchanged objects of antiques and artifacts and the information about them
The author represents the main aspects, which touch 1) the archaeological activities
Bilyashivsky’s, which coincides with the beginning of his excavations on Knyazha Gora with
financial support Tarnovsky’s Jr.; 2) the analysis of the excavation Knyazha Gora in 1891-1892
gg.; 3) the formation of the archaeological collection of Chernigov patron; 4) the preparation
of the collection and «The catalogue of Ukrainian antiquities the V. V. Tarnowsky’s collection»
to the beginning of XI Archaeological Congress in 1899 in Kyiv. As a result, the materials were systematized under the historical sequence of eras and
geographical the items and divided into 3 sections: prehistorical, great princely and cossack. So Tarnowskyi Jr. and Bilyashivskyi found a rare persistence concerning of research and preservation historical and cultural heritage
Fault Identification in Rotor System Using Model Based Methods, Experimental Data and Artificial Neural Network
No full textBullough, Robert V., Jr., Paul R. Klohr, a Hermenuetic Portrait, JCT, 17(Spring, 2001), 85-92.
No full textDescribes in personal terms the author\u27s mentor, Paul R. Klohr, and his contributions to the field of curriculum studies
Produção do Jundiá (Rhamdia quelen) em áreas de entorno do Parque Estadual da Serra do Tabuleiro em Paulo Lopes-SC
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção.A ocupação e uso da terra no entorno de unidades de conservação podem ser conflitantes com a manutenção da diversidade biológica da área protegida. As populações residentes nestas áreas deveriam praticar atividades que garantam a integridade dos recursos que a unidade objetiva proteger e assegurem condições e meios necessários para a satisfação de suas necessidades materiais, sociais e culturais. O Rhamdia quelen, um peixe que ocorre desde o México até o centro da Argentina, conhecido no sul do Brasil como jundiá, é uma espécie que vem despertando grande interesse por parte de produtores de peixes desta região. Os resultados de reprodução, larvicultura, alevinagem e desenvolvimento desta espécie autóctone da região de Paulo Lopes são analisados neste trabalho para verificar seu potencial zootécnico. A exploração sustentável de uma espécie local (autóctone) contribui para a preservação do meio ambiente, porém só é possível se a espécie apresentar características de reprodução e desenvolvimento próprias para o cultivo. Os dados mostraram que o jundiá da região apresenta características zootécnicas para a sua incorporação em um sistema de produção das comunidades locais. A produção de uma espécie de peixe autóctone é proposta como base para um modelo de desenvolvimento compatível com a conservação dos recursos naturais e melhoria da qualidade de vida de agricultores familiares residentes na área de entorno do Parque Estadual da Serra do Tabuleiro em Paulo Lopes - SC
- …
