202,217 research outputs found
[Letter from Meyer Bodansky to Ray K. and Louis Daily - June 21, 1939]
No full textLetter from Dr. Meyer Bodansky to Drs. Ray K. and Louis Daily regarding candidates for the general Jewish Relief Committee and the appointment of a non-Jewish doctor as the Chairman
[Letter from Meyer Bodansky to Louis Daily and Ray K. Daily - October 25, 1939]
No full textLetter from Dr. Meyer Bodansky to Dr. Louis Daily and Dr. Ray K. Daily, dated October 25, 1939. The letter informs the Dailys that a letter from a fellow doctor is enclosed for their analysis. Dr. Bodansky also discusses his plans for a vacation to Houston and the fact that his book was recently published. He also invites the couple to visit him and his wife Eleanor
Letter from Ray K. Levinson to Helen Farr Sloan, February 28, 1947
No full text2 leaves (single sided)Letter from Ray K. Levinson to Helen Farr Sloan, February 28, 194
Letter from Mrs. Ray K. Levinson to Helen Farr Sloan, 1947
No full text2 leaves (single sided)Letter from Mrs. Ray K. Levinson to Helen Farr Sloan, 194
Letter from Mrs. Ray K. Levinson to Helen Farr Sloan, 1947
No full text1 leaf (single sided)Letter from Mrs. Ray K. Levinson to Helen Farr Sloan, 194
Letter from Mrs. Ray K. Levinson to Helen Farr Sloan, 1947
No full text2 leaves (single sided)Letter from Mrs. Ray K. Levinson to Helen Farr Sloan, 194
Letter from Mrs. Ray K. Levinson to Helen Farr Sloan, 1947
No full text1 leaf (single sided)Letter from Mrs. Ray K. Levinson to Helen Farr Sloan, 194
Letter from Ray K. Levinson to Helen Farr Sloan, February 28, 1947
No full text2 leaves (single sided)Letter from Ray K. Levinson to Helen Farr Sloan, February 28, 194
Dalitz plot analysis of the decay B[superscript ±]→K[superscript ±]K[superscript ±]K[superscript ∓]
No full textWe analyze the three-body charmless decay B[superscript ±]→K[superscript ±]K[superscript ±]K[superscript ∓] using a sample of 226.0±2.5 million BB̅ pairs collected by the BABAR detector. We measure the total branching fraction and CP asymmetry to be B=(35.2±0.9±1.6)×10[superscript -6] and A[subscript CP]=(-1.7±2.6±1.5)%. We fit the Dalitz plot distribution using an isobar model and measure the magnitudes and phases of the decay coefficients. We find no evidence of CP violation for the individual components of the isobar model. The decay dynamics is dominated by the K[superscript +]K[superscript -] S-wave, for which we perform a partial-wave analysis in the region m(K[superscript +]K[superscript -])<2 GeV/c[superscript 2]. Significant production of the f[subscript 0](980) resonance, and of a spin zero state near 1.55 GeV/c[superscript 2] are required in the isobar model description of the data. The partial-wave analysis supports this observation
A bench-top K X-ray fluorescence system for quantitative measurement of gold nanoparticles for biological
No full textGold nanoparticles can be targeted to biomarkers to give functional information on a range of tumour characteristics. X-ray fluorescence (XRF) techniques offer potential quantitative measurement of the distribution of such heavy metal nanoparticles. Biologists are developing 3D tissue engineered cellular models on the centimetre scale to optimise targeting techniques of nanoparticles to a range of tumour characteristics. Here we present a high energy bench-top K-X-ray fluorescence system designed for sensitivity to bulk measurement of gold nanoparticle concentration for intended use in such thick biological samples. Previous work has demonstrated use of a L-XRF system in measuring gold concentrations but being a low energy technique it is restricted to thin samples or superficial tumours. The presented system comprised a high purity germanium detector and filtered tungsten X-ray source, capable of quantitative measurement of gold nanoparticle concentration of thicker samples. The developed system achieved a measured detection limit of between 0.2 and 0.6 mgAu/ml, meeting specifications of biologists and being approximately one order of magnitude better than the detection limit of alternative K-XRF nanoparticle detection techniques. The scatter-corrected K-XRF signal of gold was linear with GNP concentrations down to the detection limit, thus demonstrating potential in GNP concentration quantification. The K-XRF system demonstrated between 5 and 9 times less sensitivity than a previous L-XRF bench-top system, due to a fundamental limitation of lower photoelectric interaction probabilities at higher K-edge energies. Importantly, the K-XRF technique is however less affected by overlying thickness, and so offers future potential in interrogating thick biological samples
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