PRECISION STABILIZER FOR THE INTEGRAL VALUES OF PULSE CURRENTS IN INDUCTIVE LOADS.

A stabilizer is described for the current pulses in the inductive loads used in NMR measurements of the self-induction coefficient. Stabilizing the integral value of the pulse of the magnetic field of up to approx. 10** minus **6 to be achieved, while their amplitudes are increased to 50 T/m

Generalized concentration dependence of makromolecule selfdiffusion coefficients in polyethyleneoxide solutions

The polyethyleneoxide (PEO) macroraolecule translational mobility in dioxane and benzene solutions was studied by pulsed field gradient nmr. The generalized dependence describing the macromolecule translational mobility in solutions - invariant with respect to the polymer molecular mass, solvent,as well as to temperature - was obtained. © 1985 Springer-Verlag

Universal self-diffusion coefficients of macromolecules in polymer solutions and melts as a function of concentration and molecular mass

On the basis of an analysis of experimentally determined coefficients of self-diffusion D3 for polystyrene, polyethylene oxide (PEO), polydimethylsiloxane, and dextran in different solvents over a wide range of MM variation and concentrations σ, it is shown that there are universal relations between D3 and between D3 and M. © 1989

Concentration dependence of the coefficient of self-diffusion of macromolecules in polymer solutions

The NMR method with the pulse gradient of the magnetic field has been used to study 3he self-diffusion of macromolecules of PEO (Mn = 2×103-3×106) and PS (Mn = 2·4×105; 1·3×106) in different solvents over a wide range of change in concentration. The concentration dependence of the self-diffusion coefficients of the macromolecules after allowing for their local dynamic properties may be described by a universal function invariant to the MM of the polymer and the quality of the solvent. Theoretical discussion of the results is based on the concept of dynamic scaling. © 1988

Identifying earthworms (Oligochaeta, Megadrili) of the Southern Kuril Islands using DNA barcodes

Identificación de las lombrices (Oligochaeta, Megadrili) del sur de las Islas Kuriles utilizando códigos de barras de ADN Las Islas Kuriles forman un archipiélago volcánico situado entre Hokkaido y Kamchatka. En este estudio analizamos las lombrices de tres de las Islas Kuriles meridionales: Kunashir, Shikotan y Yuri, utilizando el análisis morfológico y los códigos de barras de ADN. Nuestros resultados ponen de relieve el potencial de los códigos de barras de ADN para estudiar las lombrices: si bien en estudios anteriores solo se habían registrado seis especies y subespecies de lombriz en las Islas Kuriles meridionales, nosotros detectamos 15 grupos genéticos. Seis de ellos son especies cosmopolitas europeas; seis, especies asiáticas; y tres, sin determinar. A pesar de que no se encontraron lombrices europeas en Yuri, que está deshabitada desde la Segunda Guerra Mundial, estas especies dominaron en las islas Kunashir y Shikotan, que son más grandes y están habitadas, lo que sugiere que se trata de especies invasoras recientes. De las seis especies asiáticas, cinco tenían secuencias cox1 idénticas o muy emparentadas con las secuencias publicadas encontradas en el continente o en las islas del Japón y, por tanto, se trata de invasoras recientes.The Kuril Islands are a volcanic archipelago located between Hokkaido and Kamchatka. In this study we investigated earthworm fauna of three of the Southern Kuril Islands, Kunashir, Shikotan, and Yuri, using both morphological analysis and DNA barcoding. Our results highlight the potential of DNA barcoding for studying earthworm fauna: while previous studies reported only six earthworm species and subspecies on the Southern Kurils, we detected 15 genetic clusters. Six of them correspond to European cosmopolites; six, to Asian species, and three, to unidentified species. While no European earthworms were found on Yuri that is uninhabited since WWII, they dominated on larger and inhabited Kunashir and Shikotan, suggesting that they are recent invaders. Of the six Asian species, five had cox1 sequences identical or very closely related to published sequences from the mainland or the Japanese islands and thus are recent invaders.Identificación de las lombrices (Oligochaeta, Megadrili) del sur de las Islas Kuriles utilizando códigos de barras de ADN Las Islas Kuriles forman un archipiélago volcánico situado entre Hokkaido y Kamchatka. En este estudio analizamos las lombrices de tres de las Islas Kuriles meridionales: Kunashir, Shikotan y Yuri, utilizando el análisis morfológico y los códigos de barras de ADN. Nuestros resultados ponen de relieve el potencial de los códigos de barras de ADN para estudiar las lombrices: si bien en estudios anteriores solo se habían registrado seis especies y subespecies de lombriz en las Islas Kuriles meridionales, nosotros detectamos 15 grupos genéticos. Seis de ellos son especies cosmopolitas europeas; seis, especies asiáticas; y tres, sin determinar. A pesar de que no se encontraron lombrices europeas en Yuri, que está deshabitada desde la Segunda Guerra Mundial, estas especies dominaron en las islas Kunashir y Shikotan, que son más grandes y están habitadas, lo que sugiere que se trata de especies invasoras recientes. De las seis especies asiáticas, cinco tenían secuencias cox1 idénticas o muy emparentadas con las secuencias publicadas encontradas en el continente o en las islas del Japón y, por tanto, se trata de invasoras recientes

On the generalized concentration and molecular mass dependencies of macromolecular self-diffusion in polymer solutions

Self-diffusion experimental data obtained with the n.m.r. pulsed gradient spin-echo method in polyethylene oxide (PEO), polystyrene (PS), dextran, gelatine, cellulose triacetate (CT), poly(dimethyl siloxane) (PDMS) solutions and melts in a wide range of solvents, with molecular mass (M) and concentration (ø), were analysed to show the existence of common dependencies for Ds(M) and Ds(ø). The general law for Ds(ø) is expressed as f( ø \ ̂o) = Ds(ø) L(ø)Ds(0) and is correct for the solvent quality ranging from θ to 'good'. The existence of the generalized f( ø \ ̂o) was examined for the 17 different polymer-solvent systems. With the use of the generalized function, where Ds(O)=lim Ds \ ̂o,Ds(O)≈M-β, \ ̂≈M- 2-β 3 nearly 100 Ds(ø) dependencies were described. The renormalization function L(ø) accounts for the local dynamic properties of the concentration dependence. © 1988

Судебно-медицинская экспертиза по гражданским делам — состояние, проблемы, перспективы

The state of forensic medical examinations in civil cases related to health harm while rendering medical services is not shown to meet the need for a legal procedure. Key words: forensic medical examination, civil procedure, medical cases.Показано, что состояние судебно-медицинских экспертиз по гражданским делам о причинении вреда здоровью при оказании медицинских услуг не удовлетворяет потребности правовой процедуры. Ключевые слова: судебно-медицинская экспертиза, гражданский процесс, медицинские дела; forensic medicine expert examination, civil procedure, medical cases