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1Latest Papers from Table of Contents or Articles in PressA. Mutreja ; D. W. Kim ; N. R. Thomson ; T. R. Connor ; J. H. Lee ; S. Kariuki ; N. J. Croucher ; S. Y. Choi ; S. R. Harris ; M. Lebens ; S. K. Niyogi ; E. J. Kim ; T. Ramamurthy ; J. Chun ; J. L. Wood ; J. D. Clemens ; C. Czerkinsky ; G. B. Nair ; J. Holmgren ; J. Parkhill ; G. Dougan
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-08-26Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Cholera/*epidemiology/microbiology/*transmission ; Genome, Bacterial/genetics ; Haiti/epidemiology ; Humans ; Likelihood Functions ; Molecular Epidemiology ; Pandemics/*statistics & numerical data ; Phylogeny ; Polymorphism, Single Nucleotide/genetics ; Vibrio cholerae/classification/*genetics/*isolation & purification ; Zimbabwe/epidemiologyPublished by: -
2Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] The secobarbital sodium (30 mg/kg) was injected intra-peritoneally to rats and urine was collected for a period of 16 h. The urine was acidified with dilute hydrochloric acid and shaken with 5 vol. of methylene chloride for 10 min. After separation, methylene chloride was washed first with 5 ml. of ...Type of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] This communication is a report of the detection of a metabolic product of secobarbital in human liver tissue. A 33-year-old Caucasian female, with a history of depression and a previous suicide attempt by means of tranquillizers, was found unconscious in bed in the morning, about 9 h after she had ...Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] This separation was achieved by applying solutions of these drugs to a sheet of diethylaminoethylcellulose paper and carrying out chromatography in a 0-1 M solution of the disodium salt of ethylenediaminetetra-acetic acid for 20 min. At the end of this period the wet sheet was subjected to ...Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] However, if after chromatography the wet paper is subjected to ionophoresis (again in dilute ammonia solution) in a direction at right angles to the chroma-tographic solvent flow, a complete resolution of all three components of the mixture can be effected in only 30 min. (Fig. 2). The ...Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] According to Stewart and Stolman2, a major metabolite of acetophenetidin in the human body is p-acetylaminophenol. When ja-acetylaminophenol is subjected to ehromatography on Whatman DE2Q ion-exchange paper, it moves at approximately the same speed as phenobarbitone, so that a mixture of these two ...Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1572-8943Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyDescription / Table of Contents: Résumé On a déterminé à l'aide d'une seule courbe ATD l'énergie d'activation de la transformation du gel de silice en cristobalite, réaction partiellement du premier ordre, en utilisant les méthodes décrites dans la littérature. Les valeurs obtenues ne sont pas en accord avec celles obtenues par la méthode isotherme. On a déduit que les méthodes utilisées ne sont pas valables dans le cas des réactions partielles. On établit une équation modifiée qui permet de déterminer l'énergie d'activation de réactions du Ier ordre à partir d'une seule courbe ATD si les fractions transformées pendant la réaction sont connues.Abstract: Zusammenfassung Die Aktivierungsenergie der Umwandlung von Kieselgel in Cristobalit, einer Teilreaktion erster Ordnung, wurde aus einer einzigen DTA-Kurve unter Anwendung einer in der Literatur beschriebenen Methode bestimmt. Die erhaltenen Werte standen mit den durch isotherme Methoden ermittelten nicht in Übereinstimmung. Daraus wurde gefolgert, daß die Methoden bei Teilreaktionen nicht einzusetzen sind. Eine modifizierte Gleichung wurde abgeleitet, die sich zur Bestimmung der Aktivierungsenergie von Reaktionen erster Ordnung aus einer einzelnen DTA-Kurve eignet, wenn der während der Reaktion umgewandelte Anteil bekannt ist.Notes: Abstract The activation energy for the transformation of silica gel to cristobalite, a partial reaction of first order, was determined from a single DTA curve by the methods available in the literature. The values obtained were not in agreement with those obtained by the isothermal method. This suggested that the methods were not applicable to reactions which are partial. A modified equation was derived which could be utilized for the determination of the activation energy of first-order reactions from a single DTA curve, if the fraction transformed during the reaction was known.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 1573-4811Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesStaff View
ISSN: 1573-4803Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract A new equationE =E 0 (1 −aP) n whereE andE 0 are the Young's moduli at porosity,P, and zero, respectively, a andn are material constants, has been derived semi-empirically for describing the porosity dependence of Young's modulus of brittle solids. The equation satisfies quite well the exact theoretical solution for the values of Young's moduli at different porosities for model systems with ideal and non-ideal packing geometry. The equation shows excellent agreement with the data Onα- andβ-alumina over a wide range of porosity. Unlike the existing porosity-elastic modulus equations, the proposed equation satisfies the boundary conditions and is inherently capable of treating isometric closed pores as well as non-isometric interconnected pores. The parameters a and n provide information about the packing geometry and pore structure of the material.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 1573-4803Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract The strength and elastic modulus of a porous brittle solid such as gypsum have been studied using an acousto-ultrasonic technique. Acousto-ultrasonics has been found to be a sensitive indicator of strength and porosity which are linearly related to some powers of a stress wave factor. New equations for porosity dependence of ultrasonic velocity, elastic modulus and strength of brittle solids have been proposed.Type of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 1573-4811Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 1573-4811Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: