Film processability and properties of polycaprolactone/thermoplastic starch blends

Abstract

Nucleolar organizing regions (NORs) containing rDNA gene clusters have been assigned to the equine autosomes ECA1, ECA28, and ECA31. Active NORs (Ag-NORs) are associated with argyrophilic proteins, which allow them to be readily identified using silver staining techniques. Fluorescence in situ hybridization (FISH) for rDNA can also be used to visualize all NOR clusters in the nucleus, regardless of whether they are active or inactive. The present study analyzed the distribution and behavior of equine Ag-NOR and NOR clusters in horse spermatozoa and during male meiosis by FISH and silver staining. The NOR foci were observed to be variable in number, size, and shape, but were usually located centrally and appeared as one or two nucleolus-like structures in the spermatozoa head. Three distinctive FISH signals identified the NOR-bearing chromosome pairs during the synaptic cell stage of meiosis I. At diakinesis/metaphase I, as well as different stages of meiosis II, FISH signals clearly depicted the NOR-bearing sister chromatids. The synaptonemal complexes of primary spermatocytes consistently showed three rDNA foci following FISH, but variably demonstrated two or three Ag-NOR bodies following silver staining. We propose rDNA loss and gain during unequal crossing-over events could be both a direct and indirect cause of variation in equine NOR foci. Additionally, our cytogenetic analysis did not confirm the presence of a fourth pair of NORs-bearing chromosomes in the horse, which is contrary to previously mitotic published data. " 2012 Elsevier Inc.",,,,,,"10.1016/j.theriogenology.2011.08.034",,,"http://hdl.handle.net/20.500.12104/43253","http://www.scopus.com/inward/record.url?eid=2-s2.0-84855810848&partnerID=40&md5=d1c3616352e1f85af4312577ea287227",,,,,,"3",,"Theriogenology",,"579

587",,"77",,"Scopus

WOS",,,,,,"FISH; Horse; Meiosis; NORs; RDNA; Spermatozoa; Synaptonemal complexes",,,,,,"Nucleolar organizer regions (NORs) distribution and behavior in spermatozoa and meiotic cells of the horse (Equus caballus)",,"Article" "43350","123456789/35008",,"Gamiño Estrada, Claudia Universidad de Guadalajara",,"Gamiño Estrada, Claudia Universidad de Guadalajara",,"2003",,,,,,,,,,"1405-1451","http://hdl.handle.net/20.500.12104/41571",,,"Español",,,,"1",,"Revista Jurídica Jalisciense",,"159-172",,"13",,"CLASE",,,,,,,,"Historia y teorías del derecho",,,,"El juzgado General de Bienes de Difuntos en la Nueva Galicia",,"journalArticle" "43321","123456789/35008",,"Rojo-Vázquez, J.A., Centro de Ecología Costera, Depart de Ecolo Recursos Naturales, Universidad de Guadalajara, Gómez Farias 82, Jalisco 48980, Mexico; Arreguín-Sánchez, F., Centro de Ecología Costera, Depart de Ecolo Recursos Naturales, Universidad de Guadalajara, Gómez Farias 82, Jalisco 48980, Mexico; Godínez-Domínguez, E., Centro de Ecología Costera, Depart de Ecolo Recursos Naturales, Universidad de Guadalajara, Gómez Farias 82, Jalisco 48980, Mexico",,"Rojo-Vazquez, J.A.

Arreguin-Sanchez, F.

Godinez-Dominguez, E.",,"2001",,"Gillnet selectivity, fishing power and catch efficiency for Microlepidotus brevipinnis (Steindachner, 1869) off Bahia de Navidad, Jalisco, Mexico, were estimated. Field experiments were conducted using gillnets of 7.62 and 8.89 cm of mesh-size, during April 1994 to March 1995. A total of 457 organisms were caught with the 7.62 cm mesh-size, and 592 with the 8.89 mesh-size. Results shows gillnet of 8.89 cm mesh size caught 3 cm larger organisms and 110 g more weighted fish than those caught by the 7.62 mesh-size. The 7.62 mesh-size caught 1.9 times organisms and 1.3 more weight than the 7.62 cm mesh-size. Selectivity analysis indicates an optimum length (100% probability of retention) was 27.7 cm TL for the 7.62 mesh-size and 32.3 cm TL for the 8.89 cm mesh-size. The relative efficiency analysis was estimated as relative catchability ratio between nets and it varied in a range of 25% to 39% with fish length.",,,,,,,,,"http://hdl.handle.net/20.500.12104/41542","http://www.scopus.com/inward/record.url?eid=2-s2.0-0034888606&partnerID=40&md5=2af91805fc89a077d55f15f29119fbd3",,,,,,"1",,"Revista de Biologia Marina y Oceanografia",,"9

14",,"36",,"Scopus",,,,,,"Catchability; Fish power; Gillnet; Jalisco; Mexico; Microlepidotus brevipinnis; Selectivity",,,,,,"Fishing power, efficiency and selection of gillnets for the shortfin grunt (Microlepidotus brevipinnis Steindachner, 1869), in the southern coast of Jalisco, Mexico [Poder de pesca, selectividad y eficiencia de las redes de enmalle para la Sarangola (Microlepidotus brevipinnis Steindachner, 1869) en la costa sur de Jalisco, México]",,"Article" "43285","123456789/35008",,"Ramírez-Arreola, D.E., Departamento de Ingenierías, Universidad de Guadalajara, Av. Independencia Nacional # 151, Autlán de Navarro, Jalisco 48900, Mexico; Robledo-Ortiz, J.R., Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. Gral. Marcelino García Barragán # 1451, Guadalajara, Jalisco 44430, Mexico; Moscoso, F., Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. Gral. Marcelino García Barragán # 1451, Guadalajara, Jalisco 44430, Mexico; Arellano, M., Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. Gral. Marcelino García Barragán # 1451, Guadalajara, Jalisco 44430, Mexico; Rodrigue, D., Department of Chemical Engineering, CERMA, University Laval, Quebec City, QC G1V 0A6, Canada; González-Núñez, R., Departamento de Ingeniería Química, Universidad de Guadalajara, Blvd. Gral. Marcelino García Barragán # 1451, Guadalajara, Jalisco 44430, Mexico",,"Ramirez-Arreola, D.E.

Robledo-Ortiz, J.R.

Moscoso, F.

Arellano, M.

Rodrigue, D.

Gonzalez-Nunez, R.",,"2012",,"In this work, the processing and properties of blown films prepared from thermoplastic corn starch (TPS) and polycaprolactone (PCL) were studied, in particular at high TPS content. The influence of processing parameters and material moisture content on the tensile properties was also studied. The results show that final film properties are mainly controlled by the draw ratio, blow-up ratio and PCL concentration in the blends. The results also show that PCL/TPS films are less hydrophilic as PCL content increases. Finally, it was found that a very narrow processing window exists for this blend. " 2011 Wiley Periodicals, Inc.