Maria Schiavone - Academia.edu (original) (raw)
Papers by Maria Schiavone
Darwiniana, nueva serie, 2016
Thamniopsis flexifolium is a new species from Yungas in the Northwest of Argentina. It is disting... more Thamniopsis flexifolium is a new species from Yungas in the Northwest of Argentina. It is distinguished from congeners by the reddish purple plants, large teeth and sharp leaf margin and the cells of the sheet laterally thickened walls, sometimes prorate. Further, Lepidopilum muelleri is a new record for the country. Descriptions, distributions, illustrations, discussions to the taxa and the key are included for the species of the family Pilotrichaceae of the northwest of Argentina.
The rediscovery of fertile populations of Dicranella lorentzii (Müll.Hal.) Broth. allowed the det... more The rediscovery of fertile populations of Dicranella lorentzii (Müll.Hal.) Broth. allowed the detailed examination of this forgotten endemic taxon of NW Argentina, and its comparison with other South American species. We present in this contribution a redescription of the species, together with the first illustrations for it. A lectotype for this name is here designated.
Bonplandia, 2005
El 30 de noviembre de 2004, a los 61 años, en la provincia de Buenos Aires, falleció la Prof. Cel... more El 30 de noviembre de 2004, a los 61 años, en la provincia de Buenos Aires, falleció la Prof. Celina María Matteri, después de una penosa enfermedad, que no le impidió redactar sus últimos trabajos, corregir los que teníamos en marcha y por que no decirlo, programar las actividades futuras. Celina dedicó su vida al estudio de los musgos. Su interés por este grupo de plantas había comenzado en la década del 60, bajo la dirección de la Dra. Gabriela H. de Menéndez, en el Museo Argentino de Ciencias Naturales Bernardino Rivadavia, el que con el paso de los años se convirtiera en su segunda casa. La pasión y entusiasmo que ponía frente a estos organismos hizo que los conociera tanto por haber visitado los herbarios más importantes del mundo y haberse perfeccionado al lado de destacados investigadores, como por estudiarlos en su hábitat natural. Fue una incansable coleccionista, recorrió distintos países y casi toda Argentina coleccionando y observando los musgos de las distintas regiones geográficas, aunque fue la región Andino Patagónica a la dedicó sus mayores esfuerzos. Tuve el privilegio, como todos los que nos interesamos en el estudio de los musgos, de compartir extensas y agotadoras campañas. Cuando intuía que las fuerzas se nos estaban agotando, revivía su espíritu alegre y divertido, que con una frase o un comentario oportuno nos cambiaba el humor. Su vasta trayectoria científica ha quedado impresa en más de 100 trabajos en revistas nacionales e internacionales de reconocida trayectoria así como en capítulos de libros. Quienes pasamos por su laboratorio, no podemos dejar de valorar su espíritu generoso para escuchar, sentarse frente al microscopio con nuestros problemas y apelar a su memoria prodigiosa para extraer de su biblioteca personal lo que necesitábamos. Hoy por decisión de su familia esa biblioteca, de un valor incalculable, sigue con vida en nuestro laboratorio de la Fundación Miguel Lillo. Su espíritu participativo la llevó a tomar parte activa de la Sociedad Argentina de Botánica, fue socia fundadora de la Sociedad Latinoamericana de Briología y Presidente ejecutivo del VI Congreso Latinoamericano de Botánica. A casi un año de su fallecimiento vayan estas líneas como un sentido homenaje a quien fuera mi amiga, colega y maestra por casi tres décadas.
Boletín de la Sociedad Argentina …, 2008
Darwiniana, 2013
The genus Pohlia is reported as a new record for Uruguay, where it is represented by two species:... more The genus Pohlia is reported as a new record for Uruguay, where it is represented by two species: P. wahlenbergii and P. humilis (=P. tenuifolia). Pohlia humilis is also recorded as new for Colombia. We propose P. loriformis, a poorly known species described from Bolivia, as new synonym of P. humilis. We select lectotypes for P. loriformis and Mielichhoferia brachycarpa. We also include a key to the Pohlia species from Uruguay, and the South American synonyms, brief comments, distribution, and illustrations for P. humilis.
Journal of Bryology, 2011
In southern Africa this species was previously known as Bryum bicolor Dicks. and is usually found... more In southern Africa this species was previously known as Bryum bicolor Dicks. and is usually found on soil of disturbed habitats (Magill, 1987). 3. Bucklandiella elegans (Mü ll.Hal.
Boletín de la Sociedad Argentina …, 2007
The Thuidiaceae in Northwestern Argentina. A taxonomic revision of Thuidiaceae in northwestern Ar... more The Thuidiaceae in Northwestern Argentina. A taxonomic revision of Thuidiaceae in northwestern Argentina is presented. Three genera, Pelekium, Rauiella and Thuidium, are accepted in the NOA. Descriptions, ilustrations, maps and keys to taxa are included. A new combination for Pelekium is proposed. T. occultirete is reduced to synonymy under P. minutulum. The genera Pelekium and R. lagoensis, T. delicatulum and T. tomentosum species are new reports for Argentina.
The Bryologist, 1991
... CELINA M. MATTERI Museo Argentino de Ciencias Naturales Bernardino Rivadavia, A. Gallardo 470... more ... CELINA M. MATTERI Museo Argentino de Ciencias Naturales Bernardino Rivadavia, A. Gallardo 470, 1405 Buenos Aires, Argentina ... Page 7. 374 THE BRYOLOGIST [VOL. 94 meesia paludella, Ptychomnion densifolium, Tay-loria dubyi, y Trematodon geniculatus. ...
Boletin De La Sociedad Argentina De Botanica, Dec 12, 2014
Boletin De La Sociedad Argentina De Botanica, Dec 1, 2008
Boletin De La Sociedad Argentina De Botanica, Dec 1, 2014
Http Dx Doi Org 10 1639 0007 2745 113 3 679, Oct 11, 2010
New combinations are proposed for three Neotropical moss species following the transfer of Barbul... more New combinations are proposed for three Neotropical moss species following the transfer of Barbula uncinicoma to Gertrudiella and of Cyrto-hypnum sharpii to Pelekium.
Boletin De La Sociedad Argentina De Botanica, Jun 1, 2010
Gynecologic oncology, Jan 8, 2016
To compare the incidence of trocar site hernia in women who underwent robotically assisted laparo... more To compare the incidence of trocar site hernia in women who underwent robotically assisted laparoscopic surgery (RBT) for endometrial cancer staging with the incidence of ventral hernia formation in patients who underwent laparotomy (LAP) for the same indication. To analyze risk factors for hernia formation in women undergoing RBT for endometrial cancer. We retrospectively identified all patients who underwent surgical staging for endometrial cancer via RBT or LAP from 2009-2012. Clinicopathologic data were analyzed. Appropriate statistical tests were used. 738 patients were staged via RBT (n=567) or LAP (n=171). Overall median age was 61years (RBT range, 33-90; LAP range,28-86; p=0.4). Median BMI was 29.5kg/m(2) (range, 17.9-66) and 30.3kg/m(2) (range, 16.8-67.2), respectively (p=1.0). Eleven (1.9%) of 567 patients in the RBT cohort developed a trocar site hernia compared with 11 (6.4%) of 171 LAP patients who developed a ventral hernia (p=0.002). Median time to diagnosis was 18mon...
Boletin De La Sociedad Argentina De Botanica, Dec 12, 2014
Darwiniana Nueva Serie, Jul 31, 2013
Suárez, G. M. & M. M. Schiavone. 2013. Contributions to the moss flora of Uruguay: the genus Pohl... more Suárez, G. M. & M. M. Schiavone. 2013. Contributions to the moss flora of Uruguay: the genus Pohlia (Bryophyta, Bryales), a new record. Darwiniana, nueva serie 1(1): 61-66.
Polymer, 2011
The δ-clathrate forms of syndiotactic polystyrene (s-PS) containing a homologous series of guests... more The δ-clathrate forms of syndiotactic polystyrene (s-PS) containing a homologous series of guests characterized by an increasing molecular volume (n-alkanes ranging from n-pentane to n-dodecane) have been investigated. The present analysis allows concluding that the volume of the guest plays a crucial role in the choice of the type of δ-clathrate that can be obtained. As a matter of fact, longer n-alkanes, such as n-octane, n-nonane or n-decane, turned out to give rise triclinic δ-clathrates presenting a guest/monomeric-unit ratio of 1/8, while δ-clathrates containing shorter alkanes, like n-hexane or n-heptane, instead, present a monoclinic or a triclinic structure with a guest/monomeric-unit ratio of 1/4. These results confirm the validity of a simple criterion to predict the type of s-PS δ-clathrate with a certain guest on the basis of the experimental d010, as described in Macromolecules 2010, 43, 8549–8558. Moreover, our analysis confirms previous solid state 13C NMR and Raman spectroscopy data, indicating that shorter n-alkanes molecules, like n-hexane, are hosted in the cavities with an all-trans conformation while longer alkanes, like n-nonane, present bent conformations. The effect of n-alkanes molecules on the crystallization of s-PS amorphous samples has been investigated too.
Darwiniana, nueva serie, 2016
Thamniopsis flexifolium is a new species from Yungas in the Northwest of Argentina. It is disting... more Thamniopsis flexifolium is a new species from Yungas in the Northwest of Argentina. It is distinguished from congeners by the reddish purple plants, large teeth and sharp leaf margin and the cells of the sheet laterally thickened walls, sometimes prorate. Further, Lepidopilum muelleri is a new record for the country. Descriptions, distributions, illustrations, discussions to the taxa and the key are included for the species of the family Pilotrichaceae of the northwest of Argentina.
The rediscovery of fertile populations of Dicranella lorentzii (Müll.Hal.) Broth. allowed the det... more The rediscovery of fertile populations of Dicranella lorentzii (Müll.Hal.) Broth. allowed the detailed examination of this forgotten endemic taxon of NW Argentina, and its comparison with other South American species. We present in this contribution a redescription of the species, together with the first illustrations for it. A lectotype for this name is here designated.
Bonplandia, 2005
El 30 de noviembre de 2004, a los 61 años, en la provincia de Buenos Aires, falleció la Prof. Cel... more El 30 de noviembre de 2004, a los 61 años, en la provincia de Buenos Aires, falleció la Prof. Celina María Matteri, después de una penosa enfermedad, que no le impidió redactar sus últimos trabajos, corregir los que teníamos en marcha y por que no decirlo, programar las actividades futuras. Celina dedicó su vida al estudio de los musgos. Su interés por este grupo de plantas había comenzado en la década del 60, bajo la dirección de la Dra. Gabriela H. de Menéndez, en el Museo Argentino de Ciencias Naturales Bernardino Rivadavia, el que con el paso de los años se convirtiera en su segunda casa. La pasión y entusiasmo que ponía frente a estos organismos hizo que los conociera tanto por haber visitado los herbarios más importantes del mundo y haberse perfeccionado al lado de destacados investigadores, como por estudiarlos en su hábitat natural. Fue una incansable coleccionista, recorrió distintos países y casi toda Argentina coleccionando y observando los musgos de las distintas regiones geográficas, aunque fue la región Andino Patagónica a la dedicó sus mayores esfuerzos. Tuve el privilegio, como todos los que nos interesamos en el estudio de los musgos, de compartir extensas y agotadoras campañas. Cuando intuía que las fuerzas se nos estaban agotando, revivía su espíritu alegre y divertido, que con una frase o un comentario oportuno nos cambiaba el humor. Su vasta trayectoria científica ha quedado impresa en más de 100 trabajos en revistas nacionales e internacionales de reconocida trayectoria así como en capítulos de libros. Quienes pasamos por su laboratorio, no podemos dejar de valorar su espíritu generoso para escuchar, sentarse frente al microscopio con nuestros problemas y apelar a su memoria prodigiosa para extraer de su biblioteca personal lo que necesitábamos. Hoy por decisión de su familia esa biblioteca, de un valor incalculable, sigue con vida en nuestro laboratorio de la Fundación Miguel Lillo. Su espíritu participativo la llevó a tomar parte activa de la Sociedad Argentina de Botánica, fue socia fundadora de la Sociedad Latinoamericana de Briología y Presidente ejecutivo del VI Congreso Latinoamericano de Botánica. A casi un año de su fallecimiento vayan estas líneas como un sentido homenaje a quien fuera mi amiga, colega y maestra por casi tres décadas.
Boletín de la Sociedad Argentina …, 2008
Darwiniana, 2013
The genus Pohlia is reported as a new record for Uruguay, where it is represented by two species:... more The genus Pohlia is reported as a new record for Uruguay, where it is represented by two species: P. wahlenbergii and P. humilis (=P. tenuifolia). Pohlia humilis is also recorded as new for Colombia. We propose P. loriformis, a poorly known species described from Bolivia, as new synonym of P. humilis. We select lectotypes for P. loriformis and Mielichhoferia brachycarpa. We also include a key to the Pohlia species from Uruguay, and the South American synonyms, brief comments, distribution, and illustrations for P. humilis.
Journal of Bryology, 2011
In southern Africa this species was previously known as Bryum bicolor Dicks. and is usually found... more In southern Africa this species was previously known as Bryum bicolor Dicks. and is usually found on soil of disturbed habitats (Magill, 1987). 3. Bucklandiella elegans (Mü ll.Hal.
Boletín de la Sociedad Argentina …, 2007
The Thuidiaceae in Northwestern Argentina. A taxonomic revision of Thuidiaceae in northwestern Ar... more The Thuidiaceae in Northwestern Argentina. A taxonomic revision of Thuidiaceae in northwestern Argentina is presented. Three genera, Pelekium, Rauiella and Thuidium, are accepted in the NOA. Descriptions, ilustrations, maps and keys to taxa are included. A new combination for Pelekium is proposed. T. occultirete is reduced to synonymy under P. minutulum. The genera Pelekium and R. lagoensis, T. delicatulum and T. tomentosum species are new reports for Argentina.
The Bryologist, 1991
... CELINA M. MATTERI Museo Argentino de Ciencias Naturales Bernardino Rivadavia, A. Gallardo 470... more ... CELINA M. MATTERI Museo Argentino de Ciencias Naturales Bernardino Rivadavia, A. Gallardo 470, 1405 Buenos Aires, Argentina ... Page 7. 374 THE BRYOLOGIST [VOL. 94 meesia paludella, Ptychomnion densifolium, Tay-loria dubyi, y Trematodon geniculatus. ...
Boletin De La Sociedad Argentina De Botanica, Dec 12, 2014
Boletin De La Sociedad Argentina De Botanica, Dec 1, 2008
Boletin De La Sociedad Argentina De Botanica, Dec 1, 2014
Http Dx Doi Org 10 1639 0007 2745 113 3 679, Oct 11, 2010
New combinations are proposed for three Neotropical moss species following the transfer of Barbul... more New combinations are proposed for three Neotropical moss species following the transfer of Barbula uncinicoma to Gertrudiella and of Cyrto-hypnum sharpii to Pelekium.
Boletin De La Sociedad Argentina De Botanica, Jun 1, 2010
Gynecologic oncology, Jan 8, 2016
To compare the incidence of trocar site hernia in women who underwent robotically assisted laparo... more To compare the incidence of trocar site hernia in women who underwent robotically assisted laparoscopic surgery (RBT) for endometrial cancer staging with the incidence of ventral hernia formation in patients who underwent laparotomy (LAP) for the same indication. To analyze risk factors for hernia formation in women undergoing RBT for endometrial cancer. We retrospectively identified all patients who underwent surgical staging for endometrial cancer via RBT or LAP from 2009-2012. Clinicopathologic data were analyzed. Appropriate statistical tests were used. 738 patients were staged via RBT (n=567) or LAP (n=171). Overall median age was 61years (RBT range, 33-90; LAP range,28-86; p=0.4). Median BMI was 29.5kg/m(2) (range, 17.9-66) and 30.3kg/m(2) (range, 16.8-67.2), respectively (p=1.0). Eleven (1.9%) of 567 patients in the RBT cohort developed a trocar site hernia compared with 11 (6.4%) of 171 LAP patients who developed a ventral hernia (p=0.002). Median time to diagnosis was 18mon...
Boletin De La Sociedad Argentina De Botanica, Dec 12, 2014
Darwiniana Nueva Serie, Jul 31, 2013
Suárez, G. M. & M. M. Schiavone. 2013. Contributions to the moss flora of Uruguay: the genus Pohl... more Suárez, G. M. & M. M. Schiavone. 2013. Contributions to the moss flora of Uruguay: the genus Pohlia (Bryophyta, Bryales), a new record. Darwiniana, nueva serie 1(1): 61-66.
Polymer, 2011
The δ-clathrate forms of syndiotactic polystyrene (s-PS) containing a homologous series of guests... more The δ-clathrate forms of syndiotactic polystyrene (s-PS) containing a homologous series of guests characterized by an increasing molecular volume (n-alkanes ranging from n-pentane to n-dodecane) have been investigated. The present analysis allows concluding that the volume of the guest plays a crucial role in the choice of the type of δ-clathrate that can be obtained. As a matter of fact, longer n-alkanes, such as n-octane, n-nonane or n-decane, turned out to give rise triclinic δ-clathrates presenting a guest/monomeric-unit ratio of 1/8, while δ-clathrates containing shorter alkanes, like n-hexane or n-heptane, instead, present a monoclinic or a triclinic structure with a guest/monomeric-unit ratio of 1/4. These results confirm the validity of a simple criterion to predict the type of s-PS δ-clathrate with a certain guest on the basis of the experimental d010, as described in Macromolecules 2010, 43, 8549–8558. Moreover, our analysis confirms previous solid state 13C NMR and Raman spectroscopy data, indicating that shorter n-alkanes molecules, like n-hexane, are hosted in the cavities with an all-trans conformation while longer alkanes, like n-nonane, present bent conformations. The effect of n-alkanes molecules on the crystallization of s-PS amorphous samples has been investigated too.