Humphreys series

The Humphreys series is set of spectral lines in the emission spectrum of atomic hydrogen that ends in the fifth excited state. 

If an atom emits a photon of radiation of wavelength 5910 nm, to which spectral line in the Humphreys series does that photon correspond (i.e., the lowest-energy spectral line, the second-lowest-energy spectral line, the third-lowest-energy spectral line, etc.) Justify your answer with a calculation. 

Hiroshima, 721 histidine, 443, 774 hole, 195 homeostasis, 386 HOMO, 126, 580 homogeneous alloy, 202 homogeneous catalyst, 565 homogeneous equilibria, 362 homogeneous mixture, F53 homolytic dissociation, 80 homonuclear diatomic molecule, 103 Hooke s law, 92 hormone, 670 horsepower, A4, 791 hour, A4 HPLC, 354 HRF products, 723 HTSC, 192 Humphreys series, 51 Hund, F 35 Hund s rule, 35, 37 Hurricane Rita, 144 hyaluronic acid, 344 hybrid orbital, 109 hybridization bond angle, 131 molecular shape, 111 hydrangea color, 463 hydrate, F32 hydrate isomer, 676 hydration, 178 hydrazine, 627... 

Humphreys series spect A series of lines in the infrared spectrum of atomic hydrogen whose wave numbers are given by Rh( 1/36)1 - (1/n ), where Rh is the Rydberg constant for hydrogen, and n is any number greater than 6. hom-frez, sir-ez ... 

Humphreys series /hum-freez/ See hydrogen atom spectrum. 

In recent years it has been regarded as somewhat passe to refer to Sir Humphrey Davy in a text on cathodic protection. However, his role in the application of cathodic protection should not be ignored. In 1824 Davy presented a series of papers to the Royal Society in London in which he described how zinc and iron anodes could be used to prevent the corrosion of copper sheathing on the wooden hulls of British naval vessels. His paper shows a considerable intuitive awareness of what are now accepted as the principles of cathodic protection. Several practical tests were made on vessels in harbour and on sea-going ships, including the effect of various current densities on the level of protection of the copper. Davy also considered the use of an impressed current device based on a battery, but did not consider the method to be practicable. 

Series Editor Dr. S. Humphreys, Rapra Technology Limited... 

Humphrey, S.M., Mack, H.-G., Redshaw, C., Elsegood, M.R.J., Yormg, K.J.H., Mayerand, H.A. and Kaskad, W.C. (2005) Variable solid state aggregations in a series of (isocyanide)gold(I) halides with the novel trimethylamine-isocyanoborane adduct. Dalton Transactions, (3),... 

This work was first published in Latin as Philosophia Moysaica, Gouda, 1638, and an English version was issued Mosaicall Philosophy, Humphrey Moseley, London 1659. Here I have extracted books one and two of the second section. This is the piece that I published in 1979 as item 2 in the Magnum Opus series The Mosaical Philosophy -Cabala."... 

Figure 6.2 Critical parameters of the miR/mRNA co-transfection method. (A) Titration of mRNA amount. HeLa cells were transfected with increasing amounts of cap tail R-luc-4 sites mRNA and a fixed amount of firefly (F-luc) mRNA. R-luc expression (luciferase activity) was measured 5 h after transfection. (B) Titration of miCXCR4 concentration. HeLa cells were transfected with cap tail R-luc-4 sites mRNA, F-luc mRNA, and varying concentrations of miCXCR4. Luciferase activity was measured 16 h after transfection and fold-repression by the miR was calculated as in Fig. 6.1D (C) Time-course of miR-mediated repression. HeLa cells were co-transfected with cap tail R-luc-4 sites and F-luc (control) mRNAs, either with or without miCXCR4, and harvested at different time points. Repression was calculated as detailed in Fig. 6.1 and plotted against time (mRNA transfection data series depicted by the circles). Analogous plasmid DNA transfections are shown for reference (pDNA, diamonds). Averaged results from several experiments are shown with standard deviation. Data were previously published (Humphreys etal., 2005). Copyright PNAS, reprinted with permission.

Caution should be exercised when considering temperature effects on solubilization by micelles, since the aqueous solubility of the solute and thus its micelle/water partition coefLcient can also change in response to temperature changes. For example, it has been reported that although tt solubility of benzoic acid in a series of polyoxyethylene nonionic surfactants increases with temperature, the micelle/water partition coefLci rt, shows a minimum at 2C, presumably due to the increase in the aqueous solubility of benzoic acid (Humphreys and Rhodes, 1968). The increasr in Km with increasing temperature was attributed to an increase in micellar size, as the cloud point temperature of the surfactant is approached (Humphreys and Rhodes, 1968). 

Humphreys, K. J., and C. T. Rhodes. 1968. Effect of temperature upon solubilization by a series of nonionic surfactantsJ. Pharm. Sci. 57 79-83. 

Injection of mice with radium (presumably radium-226) at 2,000 to 4,000 pCi/kg (74,000 to 148,000 kBq/kg) was fatal in 7 to 10 days (Proescher and Almquest 1914) however, experimental details were not provided. In 12-week-old mice given a single intraperitoneal injection of radium-224 or a series of 8 such injections over a period of 4 weeks, there was no evidence of a decrease in life span at any level, up to the maximum tested, approximately 60 pCi/kg (2,220 kBq/kg) (Humphreys et al. 1985). 

In the field of metallic multibranched molecules for TPA, Humphrey et al. developed several series of organo-metallic complexes (Fig. 22). The iron octupolar complex Hulb exhibits a TPA cross-section of 920 GM at 695 nm, which corresponds to an enhanced value with respect to that of the linear system Hula (66 GM) in a ratio of 14 between TPA cross-sections of both structures (Table 4) it must be noted that this efficiency increase is obtained with a red shift of the linear absorption (460 against 436 nm, respectively, as reported in Table 4) [126]. 

Further support for Bohr s theory came from the discovery of line series in the hydrogen spectrum for which the other integer m took values other than 2. The far ultra-violet series for which m — l has already been mentioned. Lyman announced the discovery of the first two members a year after Bohr s paper, recognizing the close connection between the wavelengths of these lines and Balmer s formula. Balmer himself had asked whether ther- might not exist a series for which m — 3, and Paschen had observed its first two members in the infra-red in 1908 [101], The series with m = 4 was found by Brackett in 1922 [18], with ra — 5 by Pfund in 1924 [108], and with m = 6 by Humphreys in 1953 [66]. It is to be understood that in all these series, the running integer n takes (m +1) as its first value. 

Metabolism Skibba et al. ibid. 2043 Mizuno Humphrey, Cancer Chemother, Rep., Part 1 56, 465 (1972). fteview Carter Friedman, Europ. J, Cancer 8t 85-92 (1972) see also the series of articles on history activity mechanism of action and clinical siudies Cancer Treatment Rep, 60, 123-214 (1976). 

The failure of conservative Freemasonry is flippantly, yet succinctly summed-up by Sir Humphrey Appleby in the British Broadcasting Commission television series Yes Minister. 

Tables of calorimetric data are formd in a. Landolt-Boemstein (1956-71) Zahlenwerte und Funktionen. Springer, Berlin, 6 ed, Vol II, Parts 1-5 continued as Hellwege KH, ed. New Series Group IV Macroscopic and Technical Properties of Matter, b. Am Pet Inst Research Proj 44 Selected Values of Properties of Hydrocarbon and Related Compounds. Thermodynamics Res Center, Texas A M University, College Station, TX. c. Touloukian YS, Ho CY, eds (1970-1979) Thermophysical Properties of Matter, The TPRC Data Series. Vols 4-6, Specific Heat. IFI/Plenum, New York, NY. d. NBS Technical Notes 270-3 to 270-7 (1968-1973) Selected Values of Chemical Thermodynamic Properties. Institute for Basic Standards, National Bureau of Standards, Washington, DC. e. Karapet yants MKh, Karapet yants ML (1970) Thermodynamic Constants of Inorganic and Organic Compounds. Humphrey Sci Publ, Ann Arbor. Translated by Schmork J. f. Lide DR (annual editions) CRC Handbook of Chemistry and Physics. CRC Press, Boca Raton, FL.

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