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Carlos Eduardo da Silva Oliveira,Tiago Zoz,Eduardo Pradi Vendruscolo,Agner de Freitas Andrade,Cássio de Castro Seron,Travis Wilson Witt 한국작물학회 2020 Journal of crop science and biotechnology Vol.23 No.5
The sowing operation is crucial for the proper initial establishment of seedlings and their development. However, there is a lack of studies about the eff ects of sowing depth of rice, as well as technologies that aid to mitigate the prejudicial eff ects caused by depth. In this way, the present work aimed to evaluate the initial growth of rice plants inoculated with Azospirillum brasiliense and treated with biostimulant sowed at diff erent depths. Randomized complete block design with four replica�tions was used, in a 4 × 4 factorial scheme. The fi rst factor was composed of diff erent seed treatments (a, control—with�out treatment; b, inoculation with A. brasilense ; c, seed treatment with Stimulate® and d, inoculation with A. brasilense associated with seed treatment with Stimulate ® ). The second factor was composed of four sowing depths (1.0, 3.0, 5.0 and 7.0 cm). Treatment of rice seeds with A. brasilense and Stimulate® decreases the rate of emergence. The sowing at 7 cm depth decreases in 41.44% of the emergence, when compared to sowing at 1 cm. Inoculation with A. brasilense and sowing at increasing depths are prejudicial to the growth of rice crop.
( Eduardo Valencia Cantero ),( Juan Jose Pena Cabriales ) 한국미생물 · 생명공학회 2014 Journal of microbiology and biotechnology Vol.24 No.2
Four thermophilic bacterial species, including the iron-reducing bacterium Geobacillus sp. G2 and the sulfate-reducing bacterium Desulfotomaculum sp. SRB-M, were employed to integrate a bacterial consortium. A second consortium was integrated with the same bacteria, except for Geobacillus sp. G2. Carbon steel coupons were subjected to batch cultures of both consortia. The corrosion induced by the complete consortium was 10 times higher than that induced by the second consortium, and the ferrous ion concentration was consistently higher in ironreducing consortia. Scanning electronic microscopy analysis of the carbon steel surface showed mineral films colonized by bacteria. The complete consortium caused profuse fracturing of the mineral film, whereas the non-iron-reducing consortium did not generate fractures. These data show that the iron-reducing activity of Geobacillus sp. G2 promotes fracturing of mineral films, thereby increasing steel corrosion.
Complex percutaneous biliary procedures: Review and contributions of a high volume team
Eduardo Houghton 소화기인터벤션의학회 2019 International journal of gastrointestinal interven Vol.8 No.1
A comprehensive literature review was performed to evaluate the state of art and level of evidence of complex percutaneous biliary procedures and their safeness and effectiveness. Amidst those procedures, the review focused on techniques to achieve non-dilated biliary drainage, multiple self-expandable metallic stents, multiple plastic stents for the treatment of benign biliary strictures, simultaneous biliary and duodenal stent placement, rendezvous maneuvers, and use of magnets to treat biliary stenosis or even create new anastomosis with the jejunum or duodenum. A description of each technique and revision of literature provides useful tools for clinical practice decisions.
Stability of hybrid organosilica materials incorporating a biphenyl moiety
Eduardo R. Magdaluyo, Jr.,Raymond V. Rivera Virtudazo,Leonard P. dela Cruz,Emily V. Castriciones 한양대학교 세라믹연구소 2010 Journal of Ceramic Processing Research Vol.11 No.1
Quezon City, PhilippinesThe stability of biphenyl-functionalized ethane-silica hybrid materials was investigated by a calcination process, a hydrothermal test and exposure to UV to determine the integrity of its composition, structure, and morphology. The organosilicas were prepared via surfactant-mediated polymerization of 4,4’-bis(triethoxysilyl)biphenyl organosilane monomer and crosslinked with 1,2-bis(triethoxysilyl)ethane and tetraethoxysilane. Infrared spectroscopic and gravimetric analyses showed that the material was thermally stable below 700 oC. Its hydrothermal stability could be accounted for by the strong covalent integration of the bifunctional organic bridging groups in the silica framework. No significant change was observed in the functional groups when the material was exposed to ultra-violet radiation. Post heat treatment of the materials did not significantly change the interplanar spacing of the (100) plane, but enhanced the spherical particle morphology.
Tuberculosis in Mexico and the USA, Comparison of Trends Over Time 1990–2010
Eduardo Hernández-Garduño,Fabiola Mendoza-Damián,Salvador Ayón-Garibaldo,Adriana Garduño-Alanís 대한결핵및호흡기학회 2015 Tuberculosis and Respiratory Diseases Vol.78 No.3
Background: The aim was to compare tuberculosis trends in Mexico and United States and to evaluate Mexican diagnostic methods and contact investigation. Methods: Retrospective comparative study of tuberculosis cases and incidence rates between both countries (1990–2010). Diagnostic methods and contact investigations were also evaluated for Mexico. Estimates were obtained from official websites. Results: In Mexico, no clear trend was found over time for cases. Pulmonary (PTB) and all forms of tuberculosis (AFTB) incidence decreased 2.0% annually. There was a negative correlation between the mean contacts examined per case and AFTB incidence (r2=–0.44, p=0.01) with a 33% reduction in AFTB incidence. In United States, PTB and AFTB cases have been decreasing 6.0% and 5.6% annually, respectively. The incidence decreased 7.3% and 6.8%, respectively. Conclusion: The incidence of tuberculosis in Mexico is decreasing slightly over time at 2% annually. In the United States, cases and incidence rates have been decreasing at a higher rate (5% to 7% annually). The inverse association between number of contacts examined per state and incidence rates in Mexico underscore the importance of reinforcing and improving contact investigations with the likely translation of a decrease of TB incidence at a higher rate.