Improved tangent-cone method for the Aerodynamic Preliminary Analysis System (APAS) version of the hypersonic arbitrary-body program

The Aerodynamic Preliminary Analysis System (APAS) utilizes a modified version of the Hypersonic Arbitrary-Body Program (HABP) Mark 3 code in its analysis rationale. Four methods are considered for incorporation into the code as the tangent-cone method. The combination of second-order slender body theory and the approximate solution of Hammitt and Murthy shows the best agreement with the exact numerical solutions and is thus included in the APAS production version of the HABP code

Three newly-discovered M-dwarf companions of Solar Neighbourhood stars

We present low-resolution spectroscopy of newly-discovered candidate companions to three stars in the Solar Neighbourhood. All three companions are M dwarfs, with spectral types ranging from M4 to M9.5. In two cases, G85-55`B' (M6) and G87-9`B' (M4), we have circumstantial evidence from spectroscopy, photometry and limited astrometry that the systems are physical binaries; in the third, G216-7B (M9.5), comparison of POSS II IIIaF plate material and the 2MASS image indicates common proper motion. The primary star in this system, G216-7A (M0), appears itself to be an unresolved, nearly equal-mass binary. All three low-mass companions are highly likely to be stellar in nature, although G216-7B lies very close to the hydrogen-burning limit.Comment: Accepted for publication in PASP; 21 pages, 6 figure

El sistema Magill en anestesia inhalatoria en el perro : estudio de 61 casos clínicos

El sistema Magill es ampliamente utilizado en Anestesia Veterinaria de Pequeños Animales, y se define como un sistema con reinhalación parcial. Es de fácil manejo y más barato que otros sistemas de respiración. Debido a la necesidad del empleo de altos flujos de gases (200 cclkg/min), su principal inconveniente es que provoca contaminación atmosférica. Sin embargo, la rapidez de inducción, la poca resistencia a la respiración y el hecho de que reduce e! costo del equipamiento lo señalan como alternativa al empleo de sistemas cerrados. En el presente trabajo mostramos un total de 61 casos clínicos cuya anestesia general fue mantenida por medio de este sistema. Los perros pertenecieron a un total de 22 razas diferentes, con una edad media de 5 años y un peso medio de 30 kg. La media de tiempo de anestesia fue de 74 minutos. En todos los casos e! sistema Magill se mostró eficaz para el mantenimiento del plano anestésico adecuado, lo que permitió un manejo quirúrgico satisfactorio.The Magill rebreathing system is widely employed in small animal anaesthesia. Its main advantage is the low resistance to breathing. In addition it reduces the cost of -the anesthetic equipment. Wé show in this paper the clinical study of 61 cases of the canine specie where this system was used to maintain a situation of general anaesthesia. In all cases the Magill system showed its usefulness and versatility in order to maintain the adequate degree of anaesthetic depth

Proposal of Flowable Fill Designs for improvement of excavation and filling works of trenches in sanitation systems

Population grow in recent years requires an extension of the current pipeline sanitary system. For this purpose, granular excavation and landfill works are associated with pedestrian traffic congestion. Therefore, it is necessary to develop an innovative and sustainable alternative to reduce the problems generated during the execution of the conventional process. This research proposes the use of flowable fill due to the multiple advantages offered by this material. On the one hand, it is economical for medium to large trench fill volumes, considering savings in labor (it is done with a small number of workers), in equipment (does not require the rental or purchase of compaction equipment) and in time (the pouring is done by directly pumping the mixture, from the mixing machines to the excavation). On the other hand, being self-compacting and self-leveling decreases the width of the trenches, reducing excavation and filling volumes; which, in turn, incur money savings. Also, this material guarantees work safety, since people are not required inside the excavation and fill in poorly accessible areas without any problem. Dosages were established for ten flowable fill mixtures with cement contents of 50, 60, 70, 80 and 90 kg of cement and a range of admixture from 1.75 to 2.00%; The results indicated that decreasing the fine aggregate - coarse aggregate ratio, the compressive strength of the mixtures increases and the slumps of the mixtures decreases, and the compressive strength increases directly proportional to the cement content

Human Papillomavirus (HPV) Vaccination Status Among University Freshmen in Hawai‘i

Purpose/Background: The HPV vaccine provides immunity against nine HPV strains that cause cancer and genital warts. It is recommended for 11 to 12 year olds, and catch-up immunization is recommended for females 13 to 26 years old and males 13 to 21 years old. College students represent an important population for HPV vaccination due to their increased risk for HPV infection. Despite the benefits of the HPV vaccine, its coverage rates are low in Hawaii. Hawai‘i is the home of two large universities on two islands that are representative of Hawai‘i’s populations, including Native Hawaiians, Filipinos, and Pacific Islanders. The purpose of this study was to assess the current HPV and HPV vaccine knowledge, barriers and beliefs among incoming Freshmen university students at University of Hawai‘i at Mānoa and University of Hawai‘i at Hilo. Materials & Methods: In 2016, 200 University of Hawai‘i at Mānoa (UHM) and University of Hawai‘i at Hilo (UHH) Freshmen students responded to a survey that assessed their knowledge and awareness of HPV, the HPV vaccine, their current vaccination status, and barriers and motivators to vaccination. Descriptive statistics were used to summarize each survey variable first for all students and then separately for each campus. Results: Overall 76% of Freshmen from both campuses heard of the HPV vaccine and 54% reported hearing it from their health care provider. Only 28% UHM and 23% UHH Freshmen students have received partial (1-2 shots) or completed doses of the HPV vaccine. For those who received the vaccine, 45% reported that they were told by their parent and 43% were told by their doctor. For the 147 students who did not receive the vaccine, 28% reported that they are still not sure to get it and 20% need more information. Their main reasons for not receiving the HPV vaccine were: their doctor did not mention the vaccine to him/her (44%), he/she never knew about the vaccine (18%), and they don\u27t know enough about the vaccine (17%). Discussion/Conclusion: Although the HPV vaccine has been available for 13 years, young adults remain unvaccinated. Freshmen students reported that they are informed about the vaccine, but were not vaccinated because of the lack of parental and/or healthcare provider recommendation. With no active education campaigns in Hawaii promoting the HPV vaccine at college campuses, a first step to increasing vaccination rates is to develop a health education campaign to inform students of the HPV vaccine and its availability at campus clinics and neighboring pharmacies

Efeito de diferentes genótipos de sorgo resistentes no desempenho do pulgão-verde, Schizaphis graminum Rond.

Avaliou-se o efeito de 28 genotipos resistentes de sorgo, S.bicolor (L.) sobre a biologia do pulgao-verde, S.graminum Rond., biotipo C. Os experimentos foram conduzidos no Centro Nacional de Pesquisa de Milho e Sorgo da EMBRAPA, em Sete Lagoas, MG. Os genotipos foram semeados em vasos e individualmente infestados aos 11 dias de idade com uma ninfa recem-nascida por planta e em seguida, foram cobertos com uma gaiola cilindrica. A avaliacao foi baseada no numero de instares, periodos pre-reprodutivo e reprodutivo, ciclo total, numero de ninfas produzido e peso dos insetos (quatro e oito dias de idade). Os genotipos IS 2293, GR, TX 2567, IS 3422, GSBTX 399 x Capbam, TX 430 x GR, S 9750, H 8012 e GB 3 afetaram adversamente a biologia do inseto, aumentando o periodo pre reprodutivo e especialmente diminuindo o numero de progenies, alem de diminuir o peso dos individuos. Considerando os valores medios de todos estes genotipos, o periodo pre reprodutivo do pulgao verde foi de 8,4 dias. O numero medio de descendentes foi de 19,7 ninfas por femea e o peso dos insetos aos oito dias de vida foi de 0,179mg. Comparativamente a testemunha suscetivel BR 601, estes resultados significaram aumento medio de 21,7% no periodo pre reprodutivo e diminuicao de 51,1% no numero de descendentes e de 37,6% no peso dos insetos

Avaliação de genótipos de sorgo em relação ao pulgão-verde Schizaphis graminum (Rondani, 1852).

O pulgao-verde, Schizaphis graminum (Rondani, 1852), com presenca recente na cultura de sorgo no Brasil, e considerado uma das pragas mais importantes nao so desta cultura, mas tambem em outros cereais como o trigo por exemplo. O inseto danifica o sorgo de tres maneiras: extracao de grande quantidade de seiva, injecao de toxina na planta que causa destruicao enzimatica da parede celular causando clorose e, finalmente, necrose do tecido foliar e transmissao de viroses como o mosaico da cana-de-acucar. Dentro do contexto de manejo de pragas, a utilizacao de cultivares resistentes conjugada a outros metodos de controle e de grande importancia para o sorgo em relacao ao pulgao-verde. Como existe pouca informacao do comportamento de cultivares comerciais ou experimentais em relacao ao inseto, conduziu-se varios ensaios em casa de vegetacao no CNPMS/EMBRAPA. As cultivares foram plantadas em caixas de chapa galvanizada, com as dimensoes de 36 x 50 x 10 cm, mantendo-se um espacamento de 5 cm entre as linhas de plantio. Em cada fileira apos casualizacao, foi plantado um genotipo diferente. Cada caixa continha uma testemunha suscetivel comum. O delineamento foi inteiramente casualizado com duas repeticoes. A avaliacao baseada em uma escala visual de notas de 0 a 9, foi realizada quando o genotipo suscetivel (BR 007A) atingiu a nota 9. Os resultados indicaram que os genotipos mais resistentes ao inseto foram H 8012, S 9743, S 9750, Sondan NK, Ruby, Ranchero (hibridos), TX 430 x GR, GB3, GSBT x 399, Redlan A, TX 2567 e TX 2568 (progenes)