989 resultados para Artificial satellites, American


Relevância:

20.00% 20.00%

Publicador:

Resumo:

The propagation of herpesvirus genomes as infectious bacterial artificial chromosomes (iBAC) has enabled the application of highly efficient strategies to investigate gene function across the genome. One of these strategies, transposition, has been used successfully on a number of herpesvirus iBACs to generate libraries of gene disruption mutants. Gene deletion studies aimed at determining the dispensable gene repertoire of the Meleagrid herpesvirus 1 (MeHV-1) genome to enhance the utility of this virus as a vaccine vector have been conducted in this report. A MeHV-1 iBAC was used in combination with the Tn5 and MuA transposition systems in an attempt to generate MeHV-1 gene interruption libraries. However, these studies demonstrated that Tn5 transposition events into the MeHV-1 genome occurred at unexpectedly low frequencies. Furthermore, characterization of genomic locations of the rare Tn5 transposon insertion events indicated a nonrandom distribution within the viral genome, with seven of the 24 insertions occurring within the gene encoding infected cell protein 4. Although insertion events with the MuA system occurred at higher frequency compared with the Tn5 system, fewer insertion events were generated than has previously been reported with this system. The characterization and distribution of these MeHV-1 iBAC transposed mutants is discussed at both the nucleotide and genomic level, and the properties of the MeHV-1 genome that could influence transposition frequency are discussed. © American Association of Avian Pathologists.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Photograph contained within portfolio including title page and signatures

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Page 24 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Page 24 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Page 23 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Page 12 of the "American Jewish Cavalcade" scrapbook of Leo Baeck in New York found in ROS 10 Folder 3

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Reproductive isolation between closely related species is often incomplete. The Western honey bee, Apis mellifera, and the Eastern hive bee, A. cerana have been allopatric for millions of years, but are nonetheless similar in morphology and behaviour. During the last century the two species were brought into contact anthropogenically, providing potential opportunities for interspecific matings. Hybrids between A. mellifera and A. cerana are inviable, so natural interspecific matings are of concern because they may reduce the viability of A. cerana and A. mellifera populations – two of the world's most important pollinators. We examined the mating behaviour of A. mellifera and A. cerana queens and drones from Caoba Basin, China and Cairns, Australia. Drone mating flight times overlap in both areas. Analysis of the spermathecal contents of queens with species-specific genetic markers indicated that in Caoba Basin, 14% of A. mellifera queens mated with at least one A. cerana male, but we detected no A. cerana queens that had mated with A. mellifera males. Similarly, in Cairns, no A. cerana queens carried A. mellifera sperm, but one third of A. mellifera queens had mated with at least one A. cerana male. No hybrid embryos were detected in eggs laid by interspecifically-mated A. mellifera queens in either location. However A. mellifera queens artificially inseminated with A. cerana sperm produced inviable hybrid eggs, or unfertilised drones. This suggests that reproductive interference will impact the viability of honey bee populations wherever A. cerana and A. mellifera are in contact. This article is protected by copyright. All rights reserved.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Silver 10 Lirot coin. Reverse: Early American Hanukkah Lamp.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Silver 10 Lirot coin. Obverse: marked with "Star of David" Reverse: Early American Hanukka Lamp.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

This study compared pregnancy rates (PRs) and costs per calf born after fixed-time artificial insemination (FTAI) or AI after estrus detection (i.e., estrus detection and AI, EDAI), before and after a single PGF2α treatment in Bos indicus (Brahman-cross) heifers. On Day 0, the body weight, body condition score, and presence of a CL (46% of heifers) were determined. The heifers were then alternately allocated to one of two FTAI groups (FTAI-1, n = 139) and (FTAI-2, n = 141) and an EDAI group (n = 273). Heifers in the FTAI groups received an intravaginal progesterone-releasing device (IPRD; 0.78 g of progesterone) and 1 mg of estradiol benzoate intramuscularly (im) on Day 0. Eight days later, the IPRD was removed and heifers received 500 μg of PGF2α and 300 IU of eCG im; 24 hours later, they received 1 mg estradiol benzoate im and were submitted to FTAI 30 to 34 hours later (54 and 58 hours after IPRD removal). Heifers in the FTAI-2 group started treatment 8 days after those in the FTAI-1 group. Heifers in the EDAI group were inseminated approximately 12 hours after the detection of estrus between Days 4 and 9 at which time the heifers that had not been detected in estrus received 500 μg of PGF2α im and EDAI continued until Day 13. Heifers in the FTAI groups had a higher overall PR (proportion pregnant as per the entire group) than the EDAI group (34.6% vs. 23.2%; P = 0.003), however, conception rate (PR of heifers submitted for AI) tended to favor the estrus detection group (34.6% vs. 44.1%; P = 0.059). The cost per AI calf born was estimated to be $267.67 and $291.37 for the FTAI and EDAI groups, respectively. It was concluded that in Brahman heifers typical of those annually mated in northern Australia FTAI compared with EDAI increases the number of heifers pregnant and reduces the cost per calf born.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Contains printed copies of the 1860 constitution and by-laws, copies of proceedings and annual reports, 1859-1877, of the Board of Delegates; report on Jews in Roumania, an 1874 annual report of the Hebrew Benevolent and Orphan Asylum Society, manuscript minute books and minutes of meetings, 1859-1876, resolutions, executive, financial, ritual slaughtering and other special committee reports, newspaper clippings and correspondence with synagogues and organizations in the U.S. who constitute the membership of the Board of Delegates, with the Union of American Hebrew Congregations with whom they later merged, the Union's Board of Delegates of Civil and Religious Rights, and with individuals and organizations in foreign countries including the Alliance Israelite Universelle, the Anglo-Jewish Association, the Board of Deputies of British Jews, the Committee for the Roumanian Jews (Berlin), the Koenigsberg Committee, and the London Roumanian Committee.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The records of the North American Jewish Students Appeal (NAJSA or APPEAL) contains documents on two levels of concern: those documents dealing with the NAJSA as a student-run organization promoting Jewish identity among college-aged youth; and those documents dealing with the APPEAL as a fundraising organization for several well-known student constituent organizations. The Constituents were: the Jewish Student Press Service, Lights in Action, the North American Jewish Students Network, the Progressive Zionist Caucus, Response: A Contemporary Jewish Review, Yavneh Religious Students Organization, and Yugntruf Youth for Yiddish. Documents include correspondence, financial records, minutes, press releases, information on grants awarded to student organizations for programming and publishing, student journals, and newspapers, photographs, and ephemera.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The vibrationally corrected structure of 2,1,3-benzoselenadiazole is derived from the proton NMR spectrum including 13C-H and 77Se-H satellites, in a nematic solvent. The results indicate considerable bond-fixation in the 6-membered ring. References

Relevância:

20.00% 20.00%

Publicador:

Resumo:

Contains correspondence, monthly newsletter and other publications of the American Jewish Tercentenary Committee. Also contains correspondence of the Tercentenary Committee of the American Jewish Historical Society primarily relating to the Conference of Historians (September, 1954) and correspondence, financial records and reports of the Office of Historical Information set up jointly by the AJHS and the American Jewish Tercentenary Committee. Includes also material relating to tercentenary celebrations and exhibits sponsored by the National Committee and various state and local committees, universities and synagogues, particularly Cong. Shearith Israel in New York City.

Relevância:

20.00% 20.00%

Publicador:

Resumo:

The records consist of documentation of the American Jewish Committee's project to describe Jewish participation in the United States Armed Forces during World War I. The bulk of the material consists of questionnaires that the AJC sent to servicemen to determine Jewish identity, which contain information on personal identification and details of military service. Responses to the questionnaire come from both Jews and non-Jews. In addition, the collection contains office papers concerning the project and a ledger of manuscripts. The manuscripts document the distribution of records the Office of Jewish War Records collected, as well as list Jews who died or were given military honors.