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Numerical study of a new constructive sequence for movable scaffolding system (MSS) application
Teran, Jose Ramon Diaz de,Haach, Vladimir Guilherme,Turmo, Jose,Jorquera, Juan Jose Techno-Press 2016 Advances in concrete construction Vol.4 No.3
This paper consists in a study of a new contructive sequence of road viaducts with Movable Scaffolding System (MSS) using numerical tools based on finite element method (FEM). Traditional and new sequences are being used in Spain to build viaducts with MSS. The new sequence permits an easier construction of one span per week but implies some other issues related to the need of two prestressing stages per span. In order to improve the efficiency of the new sequence by reducing the number of prestressing stages per span, two solutions are suggested in this study. Results show that the best solution is to introduce the 100% of the prestressing force at the self-supporting core in order to improve the road viaduct construction with movable scaffolding system by reducing execution time without increasing economic costs.
Singular extended skew-elliptical distributions
Jose A. Diaz-Garcia,Graciela Gonzalez-Farias 한국통계학회 2008 Journal of the Korean Statistical Society Vol.37 No.4
Singular vector and matrix extended skew-elliptical distributions are studied in this work. Based on the vectorial case, two alternatives for singular matrix variate extended skew-elliptical distribution are also proposed. In addition, the distributions of a general linear transformation for extended skew-elliptical vectors and matrices are derived along with the corresponding density functions. These results are applied in the distribution of the residuals for a general linear model with extended skew-elliptical errors.
Jose Armando Hernandez-Diaz,Jorge Jonathan Oswaldo Garza-G,Victor Garcia-Gaytan,Janet Maria Leon-Morales,Adalberto Zamudio-Ojeda,Soledad Garcia-Morales 한국원예학회 2021 원예과학기술지 Vol.39 No.4
In this study, the effects of different concentrations of vanadium (V), selenium (Se), cerium (Ce), and iodine (I) on the growth parameters, biomass accumulation, and content of photosynthetic pigments during the seedling stage of marigold (Calendula officinalis L.) were evaluated. The beneficial elements V (3, 5, or 10 μM), Se (5, 10, or 20 μM), Ce (25, 50, or 100 μM), and I (5 or 10 μM) were applied once a week along with 50% Hoagland nutritive solution. Four applications were applied to the roots. Doses of 5 μM V and 50 μM Ce improved plant height, while 5 μM I promoted root growth. Leaf area and number of leaves increased with the application of 20 μM Se and 5 μM I, respectively. High concentrations of Se and Ce improved leaf dry weight, while 10 μM V increased the photosynthetic pigment content. The application of these elements contributed to the development and production of marigold seedlings during nursery growth.
Najera, Jose Francisco Diaz,Castellanos, Jaime Sahagun,Hernandez, Mateo Vargas,Serna, Sergio Ayvar,Gomez, Omar Guadalupe Alvarado,Verduzco, Clemente Villanueva,Ramos, Marcelo Acosta The Korean Society of Plant Pathology 2018 Plant Pathology Journal Vol.34 No.3
Fruit rot is the principal phytopathological problem of pipiana pumpkin (Cucurbita argyrosperma Huber) in the state of Guerrero. The aims of this research were to 1) identify the causal agent of southern blight on pumpkin fruits by morphological, pathogenic, and molecular analysis (ITS1, 5.8S, ITS2); 2) evaluate in vitro Trichoderma spp. strains and chemical fungicides; and 3) evaluate under rainfed field conditions, the strains that obtained the best results in vitro, combined with fungicides during two crop cycles. Number of commercial and non-commercial fruits at harvest, and seed yield ($kg\;ha^{-1}$) were registered. Morphological, pathogenic and molecular characterization identified Sclerotium rolfsii as the causal agent of rot in pipiana pumpkin fruits. Now, in vitro conditions, the highest inhibition of S. rolfsii were obtained by Trichoderma virens strain G-41 (70.72%), T. asperellum strain CSAEGro-1 (69%), and the fungicides metalaxyl (100%), pyraclostrobin (100%), quintozene (100%), cyprodinil + fludioxonil (100%), and prochloraz (100%). Thiophanate-methyl only delayed growth (4.17%). In field conditions, during the spring-summer 2015 cycle, T. asperellum strain CSAEGro-1 + metalaxyl, and T. asperellum + cyprodinil + fludioxonil, favored the highest number of fruits and seed yield in the crop.
Irlanda Lagarda-Diaz,Ana M. Guzman-Partida,Jose Angel Huerta-Ocampo,JoyWinzerling,Luz Vazquez-Moreno 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.3
The gut of insects, aswell as other animals, is rich in glycoconjugates that have important biological functions required for growth and development. Interaction of lectins (carbohydrate binding proteins)with these conjugates can result in anti-physiological and insecticidal effects. PF2 lectin from Olneya tesota seeds shows insecticidal activity against Zabrotes subfasciatus larvae (bean pest). In order to evaluate the impact of plant lectins on pests, it is important to understand the composition, distribution, and physiological role of glycoconjugates present in the gut. In this study, the binding of PF2 to midgut membrane glycoproteins from 16-day-old larvae was evaluated using 2-DE (two-dimensional electrophoresis) and lectin blotting assay performed with biotinylated PF2. LC– MS/MS analysis identified several glycoproteins that could act as targets for PF2 recognition and that are involved in energy metabolism, cell motility and division, and vesicle movement among other processes. Each of these proteins is physiologically important in such a way that interference by PF2 could result in insecticidal activity.
Ad-hoc vibration monitoring system for a stress-ribbon footbridge: from design to operation
Norberto Iban,Jose M. Soria,Alvaro Magdaleno,Carlos Casado,Ivan M. Diaz,Antolin Lorenzana 국제구조공학회 2018 Smart Structures and Systems, An International Jou Vol.22 No.1
Pedro Gómez Bosque footbridge is a slender and lightweight structure that creates a pedestrian link over the Pisuerga River, Valladolid, Spain. This footbridge is a singular stress ribbon structure with one span of 85 m consisting on a steel plate and precast concrete slabs laying on it. Rubber pavement and a railing made of stainless steel and glass complete the footbridge. Because of its lively dynamics, prone to oscillate, a simple and affordable structural health monitoring system was installed in order to continuously evaluate its structural serviceability and to estimate its modal parameters. Once certain problems (conditioning and 3D orientation of the triaxial accelerometers) are overcome, the monitoring system is validated by comparison with a general purpose laboratory portable analyzer. Representative data is presented, including acceleration magnitudes and modal estimates. The evolution of these parameters has been analysed over one-year time.
Ad-hoc vibration monitoring system for a stress-ribbon footbridge: from design to operation
Iban, Norberto,Soria, Jose M.,Magdaleno, Alvaro,Casado, Carlos,Diaz, Ivan M.,Lorenzana, Antolin Techno-Press 2018 Smart Structures and Systems, An International Jou Vol.22 No.1
Pedro $G{\acute{o}}mez$ Bosque footbridge is a slender and lightweight structure that creates a pedestrian link over the Pisuerga River, Valladolid, Spain. This footbridge is a singular stress ribbon structure with one span of 85 m consisting on a steel plate and precast concrete slabs laying on it. Rubber pavement and a railing made of stainless steel and glass complete the footbridge. Because of its lively dynamics, prone to oscillate, a simple and affordable structural health monitoring system was installed in order to continuously evaluate its structural serviceability and to estimate its modal parameters. Once certain problems (conditioning and 3D orientation of the triaxial accelerometers) are overcome, the monitoring system is validated by comparison with a general purpose laboratory portable analyzer. Representative data is presented, including acceleration magnitudes and modal estimates. The evolution of these parameters has been analysed over one-year time.
Review of Acute Traumatic Closed Mallet Finger Injuries in Adults
Santiago Salazar Botero,Juan Jose Hidalgo Diaz,Anissa Benaïda,Sylvie Collon,Sybille Facca,Philippe André Liverneaux 대한성형외과학회 2016 Archives of Plastic Surgery Vol.43 No.2
In adults, mallet finger is a traumatic zone I lesion of the extensor tendon with either tendon rupture or bony avulsion at the base of the distal phalanx. High-energy mechanisms of injury generally occur in young men, whereas lower energy mechanisms are observed in elderly women. The mechanism of injury is an axial load applied to a straight digit tip, which is then followed by passive extreme distal interphalangeal joint (DIPJ) hyperextension or hyperflexion. Mallet finger is diagnosed clinically, but an X-ray should always be performed. Tubiana’s classification takes into account the size of the bony articular fragment and DIPJ subluxation. We propose to stage subluxated fractures as stage III if the subluxation is reducible with a splint and as stage IV if not. Left untreated, mallet finger becomes chronic and leads to a swan-neck deformity and DIPJ osteoarthritis. The goal of treatment is to restore active DIPJ extension. The results of a six- to eight-week conservative course of treatment with a DIPJ splint in slight hyperextension for tendon lesions or straight for bony avulsions depends on patient compliance. Surgical treatments vary in terms of the approach, the reduction technique, and the means of fixation. The risks involved are stiffness, septic arthritis, and osteoarthritis. Given the lack of consensus regarding indications for treatment, we propose to treat all cases of mallet finger with a dorsal glued splint except for stage IV mallet finger, which we treat with extra-articular pinning.
Argemone species: Potential source of biofuel and high-value biological active compounds
Alejandra Anahi Martinez-Delga,Jose de Anda,Janet Maria Leon-Morales,Juan Carlos Mateos-Diaz,Antonia Gutierrez-Mora,Jose Juvencio Castaneda-Nava 대한환경공학회 2022 Environmental Engineering Research Vol.27 No.2
The Argemone genus includes weed species of great importance in traditional medicine due to biological activities attributed to secondary metabolites, mainly alkaloids, distributed in all tissues of this species. In addition, their seeds contain a large amount of oil (30 to 40%). For this reason, several authors have discussed the potential of this species as a non-edible source to produce multi-purpose raw materials and a low cost-crop for example in the production of biofuels such as biodiesel. Argemone species grows in poor soils with low water and nutrient requirements. This makes the Argemone species an attractive economical and environmentally friendly candidate for biofuels production. Furthermore, the Argemone species can also provide high-value by-products for the agrochemical and pharmaceutical industry. In this work, we compiled the ethnomedical information, biochemical features, and biofuel production efforts that have been published by testing different Argemone species, in order to compare the research efforts and analyze its biotechnological potential. After analyzing the literature, we conclude that the genus has great potential for high-value pharmaceutical products and energy production purposes, and also to control plant pests. We also consider that other species of the genus may have also potential applications in this field.