摘要:

AbstractThis paper contains data on the solubility of a number of normal saturated fatty acids (C8‐C15) in a 2.32% aqueous sodium glycocholate solution at 25.0° and 37.0°. The data are discussed with reference to alternation phenomena in homologous series and to the transport of fatty acids through the intestinal w

ISSN:0165-0513    

DOI:10.1002/recl.19550740302

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY

摘要:

AbstractA method for the preparation of acetylenic ethers starting from aldehydes I is described. The aldehydes are transformed into α‐chloroethers II and these are halogenated to α,β‐dihalogeno‐ethers III. By means of diethylaniline a molecule of hydrogen halide is eliminated, yielding a β‐halogeno‐α,β‐unsaturated ether IV. From this a second molecule of hydrogen halide can be eliminated by heating with potassium hydroxide, resulting in the formation of an a

ISSN:0165-0513    

DOI:10.1002/recl.19550740303

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY

ISSN:0165-0513    

DOI:10.1002/recl.19550740304

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY

ISSN:0165-0513    

DOI:10.1002/recl.19550740306

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY

摘要:

AbstractThe production of radioisotopes in nuclear reactors and in cyclotrons is discussed. The types of nuclear reactions involved are mentioned. As to the production of radioisotopes, the cyclotron is an important complement to the nuclear reactor. Examples of disintegration schemes of radioisotopes are given. The loss of energy of β‐ or γ‐rays during their passage through matter is briefly discussed. The precautions necessary when working with radioisotopes are mentioned sh

ISSN:0165-0513    

DOI:10.1002/recl.19550740307

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY

摘要:

AbstractA review is given of the various radioactive iodine tests used for the evaluation of the thyroid function. The different quantitative tests are discussed chiefly from a fundamental point of view. The comparative merits and shortcomings of the various tests are reviewed. It is concluded that at present the thyroidal accumulation of radioactive iodine after a short interval is the most practical screening procedure. The determination of the protein‐bound radioactive iodine in the plasma or the measurement of the thyroidal iodide clearance are probably the best indices of the thyroid functio

ISSN:0165-0513    

DOI:10.1002/recl.19550740308

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY

摘要:

AbstractThe use of radioactive isotopes for measurements of body electrolyte content and turnover rate is briefly reviewed. Some of the more useful radioactivity measuring techniques are discussed including methods for double traces investigations and for the direct measurement of whole body radioactivity content.

ISSN:0165-0513    

DOI:10.1002/recl.19550740309

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY

摘要:

AbstractA new method is described for the determination of the abundance ratios of stable isotopes. The method is based on the difference in the infrared absorption spectra of isotopic molecules. The infrared isotope analyzer developed is a relatively simple instrument and succeeds in the measurement of the C13abundance in 20 mg of CO2with an error of 0.005 at % C13N15abundance in 8 mg of NNO with an error of 0.015 at % N15in the neighbourhood of the natural abundances of C13and N15respectively.

ISSN:0165-0513    

DOI:10.1002/recl.19550740310

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY

摘要:

AbstractA method for measuring small amounts of excreted radioactive iodine in the urine after oral administation is described. Extremely small doses (about 8 μ C ) have been used.It is concluded that the I131test is of great value in the diagnosis of thyroid diseases

ISSN:0165-0513    

DOI:10.1002/recl.19550740311

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY

摘要:

AbstractUtilisant l'augmentation de fixation de I131dans la thyroide du cobaye, nous avons étudié les conditions dans lesquelles l'hormone thyréotrope ajoutée à de l'urine pouvait être récuperée.Dans ces conditions, la recherche de l'élimination thyréotrope dans les urines de sujets normoux est le plus souvent négative.Avec la technique plus sensible deQueridoet des extraits suffisamment détoxiqués, il semble que la présence de l'hormone thyréotrope dans les urines normales

ISSN:0165-0513    

DOI:10.1002/recl.19550740312

出版商:WILEY‐VCH Verlag    

年代:1955

数据来源: WILEY