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5. 멕시코산 열 온대송이목이 분포와 다른 지역의 비료
Guzman, Gaston 한국균학회 1982 韓國菌學會誌 Vol.10 No.4
The Mexican mycoflora is very rich in species, because Mexico is the boundary between two important ecological zones, the Neotropic region in the south, and the Boreal one in the north. This is the reason why in Mexico is possible to find North American species, growing together with tropical or South American fungi. In fact, the conifereus forests from the north of Mexico run to the south to establish contact with the tropical green forests. The author has been. studied the temperate fungi from Mexico since 1955, and recently he is studying the tropical mushrooms. He discussed in 1973 (Mycology 65) the relationships between Mexican and U.S.A. mycofloras. The relationships between Mexico and South America were discussed in 1975 (in Bigelow and Thiers, Studies on Higher Fungi. Beih. Nova Hedwigia 51) and in 1977 (Bol. Soc. Argentina Bot. 18). The relationships between Mexico and Africa mycofloras were discussed by Guzma´n in 1974 (Bol. Soc. Mex. Mic., 8) when he described Fistulinella from Mexico, a genus previously only known from Africa. The relationships New Guinea-Australia-Mexico were found when Guzma´n describde new species of Psilocybe from the Australasian region, whose are very close related to the Mexican tropical species of Psilocybe; they belong to the Section Brunneocystidiatae, only know in New Guinea-Australia and Mexico. This paper is based in a discussion of the tropical and temperate Agaricales found recently in Mexico. The genera Boletus, Amanita, Cortinarius, Inocybe, Russula, Lactarius and others are very common in temperate forests (conifereus and oak forests), but the genera Marasmius, Schixophyllum, Panus, Psathyrella, Pluteus, Lepiota, Phlebopus, Fistulinella and others are typical in the tropical forests of Mexico. It is also discussed interesting species of Marasmius, Entoloma, Lacctarius, Amanita, Pleurotus and others growing in the tropical rain forests. Marasmius jalapensis, for instance, was described by Murrill from Jalapa (Mexico) in the begining of this Century, and recently was found in Africa by Pegler, and last year Guzma´n found it in a tropical rain forest of Yucatan peninsula at Mexico. Entoloma murrillii Hesler only known from Cuba, was recently found in a tropical forest in the Pacific slope of Mexico, but is uknown in the Gulf of Mexico coasts. Lactarius veraecrucis is only known in Mexico and Venezuela, in tropical forests. Guzma´n recently described new secies of Lepiota, Melanoleuca, Lepista, Amanita and Inocybe from the tropical forests of the SE of Mexico. The distribution and relationships of the Psilocybe in Mexico is also discussed.
MURILLO, GUZMAN,ANTONIA, MARIA,ASCENCIO, FELIPE 한국미생물 · 생명공학회 2001 Journal of microbiology and biotechnology Vol.11 No.1
A simple method for studying the lectin-like interactions between Helicobacter pylori and cultured human epithelial cell lines was developed using an enzyme-linked, biotin-streptavidin bacterial-adhesion assay. The present study suggests that this method is suitable for evaluating the participation of lectin interactions in the adhesion of H. pylori to cultured HeLa S3 and Kato Ⅲ cells, both fixed and glycosidase-treated cells, as well as assessing glycoconjugated binding inhibition studies. The time-course and dose-dependent kinetics of the biotin-labeled H. pylori adhesion to the formaldehyde-fixed Hela S3 and Kato Ⅲ cell lines exhibited saturation. In addition, the binding of the biotin-labeled H. pylori to the formaldehyde-fixed cultured cells was partially blocked by pre-incubation with glycoconjugates and polyclonal antibodies against a heparan sulfate binding protein from H. pylori.
The Taxonomy of Psilocybe fagicola-complex
Gaston Guzman,James Q. Jacobs,Florencia Ramirez-Guillen,Dulce Murrieta,Etelvina Gandara 한국미생물학회 2005 The journal of microbiology Vol.43 No.2
Psilocybe fagicola comprises a complex of more than eight species, six of them in Mexico, and all of them possessing a long pseudorhiza, a characteristic not listed by Heim and Cailleux in 1959 in the original description of the type species, but described by Guzmán in 1978 and 1983. The description of Psilocybe fagicola s.s. is here emended to include the length of the cheilocystidia of (6-) 12-20 (-30) μm, as well as the absence or scarcity of pleurocystidia. Psilocybe xalapensis and P. wassoniorum are considered to be synonymous with P. fagicola s.s. However, Psilocybe banderillensis and P. herrerae from Mexico, P. columbiana from Colombia, and P. keralensis from India are considered to be valid species within this complex. Moreover, P. novoxalapensis and P. teofilae, both from Mexico, are described as new species. Length of spores, presence or absence of pleurocystidia and their variations, and type of cheilocystidia constitute the principal defining characteristics of the species. Setaceous hyphae at the base of the stipe, as well as caulocystidia, lack taxonomic value, as do other morphological characteristics, including pileipellis and subpileipellis. A key to the eight considered species is also presented within the paper.
Nieto Michelle Guzman,Thomas Paul V.,ElSayed Mostafa S. A.,Saad Mohamed,Brown Gary L.,Hilliard Lawrence M. 한국항공우주학회 2020 International Journal of Aeronautical and Space Sc Vol.21 No.3
Modern Earth-based radio antennas of very-long-baseline interferometry system are furnished with robust control systems for their pointing control. Their pointing accuracy is critical to the quality of the radio wave-front captured. External disturbances, particularly those of wind gusts, produce a non-negligible dynamic aeroelastic response that degrades its pointing accuracy, and yet are not mitigated by the antenna’s control system. In this paper, a high fidelity and efficient dynamic aeroelastic model of an earth-based antenna is developed which is used to study the effects of wind gusts on the antenna’s pointing accuracy. Model order reduction of the antenna structural model is carried out using Craig–Bampton method taking into consideration the dominant modal characteristics of the antenna. The aerodynamic forces are approximated using the 2D Doublet-Lattice Method. The Davenport Spectrum is used to model aerodynamic turbulences near the earth surface. The developed dynamic aeroelastic model is employed to investigate the effects of discrete and random gusts on the pointing accuracy of the antenna. It is found that the deviation in the pointing angle is more prominent in the z (azimuth) direction and it displays a quadratic dependency with respect to the mean wind speed. This behavior is attributed to the inertial component of the aeroelastic response solution represented by the gravitational field acting on the center of gravity of the main reflector and the counterweights. The developed efficient aeroelastic model can be integrated into the antenna control system for its response prediction and mitigation.
Rosa Isela Guzman-Geronimo,Tania Margarita Alarcon-Zavaleta,Rosa Marıa Oliart-Ros,Jose Enrique Meza-Alvarado,Socorro Herrera-Meza,Jose Luis Chavez-Servia 한국식품영양과학회 2017 Journal of medicinal food Vol.20 No.2
The effect of blue maize extract in factors related to metabolic syndrome (MS) in Wistar rats was investigated. Total polyphenols, monomeric anthocyanins, and antioxidant activity were analyzed in blue maize. MS was induced in Wistar rats fed with high-sucrose (HS) diet for 12 weeks. During a period of 4 weeks, blue maize extract was administrated to HS groups fed with high-sucrose and high-cholesterol–high-sucrose (HS+C) diets. In the blue maize extract administered by orogastric cannulation, the levels of total polyphenols and anthocyanins were 9.97 and 2.92 mg/kg of weight, respectively. HS diet administered during a period of 12 weeks increased significantly systolic blood pressure, serum triglycerides, and decreased high-density lipoprotein cholesterol (HDL-C), alterations related to the MS. Abdominal adipose tissue was only increased in the HS + C group. Blue maize extract administration enhanced HDL-C and decreased systolic blood pressure, serum triglycerides, total cholesterol, and epididymal adipose tissue weight. The blue maize may represent a promising nutraceutical option for the treatment of MS.