Limpar
1.534 resultados

Acesso aberto

Tipo do recurso

Tipo de base de dados

Ano de criação

Produção nacional

Revisado por pares

Áreas

Idioma

Editores

Livro

Project Gutenberg

Artigo

George R. Johnstone,

1. Freshly dug sweet potatoes, varieties Porto Rico and Triumph, increase in their rate of respiration apparently from the date of harvest until a maximum is reached, and then the ... the moisture content to any great extent. 6. Porto Rico variety has a larger percentage of carbon dioxide ... 10. Moisture and catalase activity are higher in Porto Rico variety than in Triumph. 11. Both laccase and peroxidase are present in Porto Rico variety. These enzymes seem to be important in ... falling off at PH 5. Amylolytic activity of Porto Rico is greater than that of Triumph. 15. Tests ...

Tópico(s): Potato Plant Research

1925 - University of Chicago Press | Botanical Gazette

Primary Document Acesso aberto

Norie, John William,

... Pt. 1. The Caribbee islands, from Trinidad to Porto Rico -- pt. 2. Porto Rico to the gulf of Florida -- pt. 3. River Maranon to Porto Bello -- pt. 4. Porto Bello to the gulf ...

0000 - Gale Group | Sabin

Artigo Revisado por pares

Howard Α. Meyerhoff,

... earlier physiographic Studies The Tertiary physiographic history of Porto Rico was outlined by A. K. Lobeek in 1922. ... Culebra, and Vieques, which lie immediately east of Porto Rico (figure 1). The land-forms of these islands run those of Porto Rico a close parallel, and in the reports on ... chronologic outline established by Lobeck. The development of Porto Rico and the Virgin Islands, as determined in Lobeck’ ...

Tópico(s): Geology and Paleoclimatology Research

1927 - Geological Society of America | Geological Society of America Bulletin

Primary Document Acesso aberto

Norie, John William,

... Pt. 1. The Caribbee islands, from Trinidad to Porto Rico -- pt. 2. Porto Rico to the gulf of Florida -- pt. 3. River Maranon to Porto Bello -- pt. 4. Porto Bello to the gulf ...

0000 - Gale Group | SASII

Livro

Project Gutenberg

Artigo Acesso aberto Revisado por pares

Alexander Wetmore,

... Cape San Juan on the northeastern point of Porto Rico.Though known with Vieques as one of the ... of historians or in other literature pertaining to Porto Rico.Culebra must have been discovered at an early ... he reached St. Croix and then crossed to Porto Rico.In 1530 the historian Inigo Abbad remarks that the few remaining aborigines left Porto Rico and settled on Mona, Vieques and other off- ...

Tópico(s): Plant and animal studies

1917 - Oxford University Press | Ornithology

Primary Document -- Manuscript Acesso aberto

Article: A War Record, Commencing at Porto Rico, West Indies. Original Compositions By Rank And Ratings. Women's Royal Naval Service. Aug. 1918 - Mar 1919. W.R.N.S. 17/ ...

1918 - Gale Group | ArchivesUnbound Women-War

Artigo Revisado por pares

Frank Kern,

... Rafael A. Toro, of the Insular Experiment Station, Porto Rico, and the writer. We reached the island March ... of the Department of Agriculture and Labor of Porto Rico and the University of Porto Rico. All kinds of fungi were collected. The writer ... Mr. Carlos E. Chardon, Commissioner of Agriculture of Porto Rico. Doctor Barrus and Mr. Chardon have generously turned ...

Tópico(s): Mycorrhizal Fungi and Plant Interactions

1928 - Taylor & Francis | Mycologia

Primary Document Acesso aberto

Valiente, Porfirio,

A history of the work of the "Junta informativa de ultramar de 1866-67" and the attempted reforms of that period. Book.

0000 - Gale Group | SASII

Artigo Acesso aberto

Bailey K. Ashford,

... a detailed description of the methods of the Porto Rico Anemia Commission in combating the present epidemic in ... previous to the year 1905 ( Health Reports of Porto Rico ; deaths from anemia, 1898-1904, inclusive). Our experience ... personal care and attention. Dr. Pedro Gutierrez, of Porto Rico, the other member

Tópico(s): History of Medicine and Tropical Health

1907 - American Medical Association | Journal of the American Medical Association

Primary Document Acesso aberto

Laboulaye, Édouard,

Book.

0000 - Gale Group | SASII

Artigo Acesso aberto Revisado por pares

B. S. Bowdish,

Bowontsu, Birds of Porto Rico.Aue conspicuous that it is hunted much, but the embryo hunters have found, much to their chagrin, that it ... 1898, I began to study the birds of Porto Rico, I was somewhat surprised to find how meagre ...

Tópico(s): Lepidoptera: Biology and Taxonomy

1902 - Oxford University Press | Ornithology

Artigo

Beatrice Kesten,

... photographs of a number of dermatomycoses occurring in Porto Rico. King 2 and Ashford 3 have also emphasized ... Dr. Kesten) 4 on skin diseases occurring in Porto Rico, it was noted that 42 per cent were ...

Tópico(s): Fungal Infections and Studies

1932 - American Medical Association | Archives of Dermatology and Syphilology

Primary Document Acesso aberto

Turnbull, David,

Book.

0000 - Gale Group | SASII

Artigo Acesso aberto Revisado por pares

B. S. Bowdish,

... It is perhaps the most conspicuous bird of Porto Rico, being very evenly distributed about the® woods and ... Two nests with Vol. :so BownisH, Birds of Porto Rico.II young found June 1 and 5, respectively, ...

Tópico(s): Lepidoptera: Biology and Taxonomy

1903 - Oxford University Press | Ornithology

Primary Document Acesso aberto

Aberdeen, George Hamilton Gordon, Earl of, Sotomayor, Carlos Martínez de Irujo, duque de,

Correspondence between the Duke of Sotomayor and the Earl of Aberdeen. Original Spanish text, followed by English translation, of 1st letter. "Presented ...

0000 - Gale Group | The Making of Modern World

Artigo Revisado por pares

Harry Fielding Reid, Stephen W. Taber,

Research Article| December 01, 1919 The Porto Rico Earthquakes of October-November, 1918. Harry Fielding Reid; Harry Fielding Reid Search for other works by this author on: GSW Google Scholar ... Site Citation Harry Fielding Reid, Stephen Taber; The Porto Rico Earthquakes of October-November, 1918.. Bulletin of the ...

Tópico(s): Seismology and Earthquake Studies

1919 - Seismological Society of America | Bulletin of the Seismological Society of America

Primary Document Acesso aberto

Blachford, Michael,

Observations on winds and currents in general and in particular on those prevailing in the seas and on the coasts mentioned in the preceding pages / translated ...

0000 - Gale Group | Sabin

Artigo Revisado por pares

Ruth Winifred Ryan,

... the origin of this group. The forms of Porto Rico in general show less diversity than those of ... specimens collected by Dr. F. L. Stevens in Porto Rico during the years 1913, 1914, and 1915.

Tópico(s): Diatoms and Algae Research

1924 - Taylor & Francis | Mycologia

Artigo

Thomas M. Oelrich,

... figs. COSTA MANDRY, 0. 1928. Food infections in Porto Rico. Porto Rico Rev. Pub. Health and Trop. Med., 4 (3): ...

Tópico(s): Marine Toxins and Detection Methods

1953 - American Society of Ichthyologists and Herpetologists | Copeia

Artigo Acesso aberto Revisado por pares

W. M. Davis,

... a curve about 500 miles in length between Porto Rico and Trinidad, and includes 25 larger members with ... calcareous strata. Vieques and St. Croix, southeast of Porto Rico, and Barbados, east of the southern part of ... largest of these extends SO miles eastward from Porto Rico with a width of 25 or 30 miles, ...

Tópico(s): Tropical and Extratropical Cyclones Research

1924 - National Academy of Sciences | Proceedings of the National Academy of Sciences

Primary Document Acesso aberto

Aberdeen, George Hamilton Gordon, Earl of, Sotomayor, Carlos Martínez de Irujo, duque de,

Correspondence between the Duke of Sotomayor and the Earl of Aberdeen. Original Spanish text, followed by English translation, of 1st letter. "Presented ...

0000 - Gale Group | SASII

Artigo Acesso aberto Revisado por pares

... Two specimens of Agelaius xanthomas, evidently stragglers from Porto Rico, also were obtained on Mona.From Porto Rico Mr. Brown sent me a number of interesting ...

Tópico(s): Plant and animal studies

1892 - Oxford University Press | Ornithology

Primary Document Acesso aberto

Turnbull, David,

Book.

0000 - Gale Group | The Making of Modern World