Measurement of the ratio of the p(p)over-bar -> W + c-jet cross section to the inclusive p(p)over-bar -> W + jets cross section

We present a measurement of the fraction of inclusive W +jets events produced with net charm quantum number 11, denoted W + c-jet, in p collisions at root s = 1.96 TeV using approximately 1 fb(-1) of data collected by the do detector at the Fermilab Tevatron Collider. We identify the W +jets events via the leptonic W boson decays. Candidate W + c-jet events are selected by requiring a jet containing a muon in association with a reconstructed W boson and exploiting the charge correlation between this muon and W boson decay lepton to perform a nearly model-independent background subtraction. We measure the fraction of W + c-jet events in the inclusive W +jets sample for jet PT > 20 GeV and pseudorapidity |eta| < 2.5 to be 0.074 +/- 0.019(stat.) +/-(0.012)(0.014) (syst.), in agreement with theoretical predictions. The probability that background fluctuations could produce the observed fraction of W + c-jet events is estimated to be 2.5 x 10(-4), which corresponds to a 3.5 sigma statistical significance. Published by Elsevier B.V.

Application of C-banding in two Arachis wild species, Arachis Pintoi Krapov. and W.C. Gregory and A. villosulicarpa Hoehne to mitotic chromosome analyses

Two wild diploid (2n = 20 chromosomes) and self-pollinating Arachis species, Arachis Pintoi Krapov and W.C. Gregory and A. villosulicarpa Hoehne were submmited to C-band technique to karyotype analyses. Root tips were employed in the analyses. Morphometric data chose that chromosome lengths varied from 3.12 in A. villosulicarpa to 1.45 in A. Pintoi. Karyotype formula obtained was 10sm to A. Pintoi and 9sm + 1m to A. villosulicarpa. There was a predominance of pericentromeric C-band in all mitotic metaphasic chromosomes in both species. Besides C-band values, both species still did not differ in respect to chromosome absolute and relative lengths, centromeric index, symmetry index and total karyotype haploid length. C-band and morphometric data did not show strong or significant differences which could separate these two species of peanut which belong to evolutive different sections.

A l'occasion des Noces Du Baron W. C. De Rothschild, avec Mlle. Mathilde de Rothschild : Vingt-Un Novembre 1849

Henri Blanvalet

Letter from James Winthrop to William Bentley, 1784 February 8

Two folio-sized leaves containing a two-and-a-half-page handwritten letter from Winthrop to Bentley with a lengthy discussion on a recent comet and related calculations.

Letter from James Winthrop to William Bentley, 1784 February 16

Two folio-sized leaves containing a three-page handwritten letter from Winthrop to Bentley regarding comet calculations and a short criticism of the sermons of Samuel Cooper (1725-1783).

Letter from James Winthrop to William Bentley, 1784 March 13

Two folio-sized leaves containing a two-page handwritten letter from Winthrop to Bentley briefly mentioning book purchases and discussing Joseph Priestley's Disquisitions relating to matter and spirit.

Letter from James Winthrop to William Bentley, 1784 March 22

Two octavo-sized leaves containing a three-page handwritten letter from Winthrop to Bentley discussing the Royal Society's Philosophical Transactions.

Letter from James Winthrop to William Bentley, 1784 April 6

Two folio-sized leaves containing a two-page handwritten letter from Winthrop to Bentley discussing Joseph Priestley's Disquisitions relating to matter and spirit, and possible references to astronomical phenomena in mythological stories. Winthrop briefly mentions a 1769 Harvard student poem attributed to his classmate Jonathan Williams Austin (1751-1779; Harvard AB1769).

Letter from James Winthrop to William Bentley, 1784 April 11

One folio-sized leaf containing a two-page handwritten letter from Winthrop to Bentley discussing the case of "Capt. H." whose ship was "legally condemned by the French Court.

Letter from James Winthrop to William Bentley, 1784 May 15

One octavo-sized leaf containing a brief one-page handwritten letter from Winthrop to Bentley with a complaint about not receiving the Salem Gazette.

Letter from James Winthrop to William Bentley, 1784 May 17

Two octavo-sized leaves containing a two-and-a-half-page handwritten letter from Winthrop to Bentley discussing Alexander Pope and mythology, and a brief criticism of John Moore's A view of society and manners.

Letter from James Winthrop to William Bentley, 1784 June 12

Two folio-sized leaves containing a two-and-a-half-page handwritten letter from Winthrop to Bentley discussing mythology, a reference to the writing of David Hoar, and miscellaneous news.

Letter from James Winthrop to William Bentley, 1784 June 18

Two folio-sized leaves containing a two-and-a-half-page handwritten letter from Winthrop to Bentley discussing "the disturbances & murders at the Southward," the disciplinary case of Charles Ferguson of Charleston, Carolina who entered with the Class of 1786, and criticism of a new, unidentified Harvard Corporation member, likely John Lowell (1743-1802; Harvard AB 1760) who was elected to the Corporation in April 1784.

Letter from James Winthrop to William Bentley, 1784 July 9

Two octavo-sized leaves containing a two-page handwritten letter from Winthrop to Bentley discussing the Charles Ferguson disciplinary case.