Genetic diversity of five improved varieties (Kaysari, Kadi, Ranger, Mesmir, Sea-River) and seven Iranian landraces (Gharayonje, Amozeynadin, Rahnani, Tazekand, Shazand, Hamedani, Yazdi) of alfalfa were assessed using Esterase (EST), Peroxidase (POX), Glutamate Oxaloacetate Transaminase (GOT) and Malate Dehydrogerase (MDH). GOT and MDH were monomorphic, whereas EST and POX showed polymorphic ba...

Larger, and deeper, root systems of new maize varieties, compared to older varieties, are thought to have enabled improved acquisition of soil resources and, consequently, greater grain yields. To compare the spatial distributions of the root systems of new and old maize varieties and their relationships with spatial variations in soil concentrations of available nitrogen (N), phosphorus (P) an...

In [8], P. Jones characterized the regular varieties of semigroups which are congruence semimodular and he partially solved the problem of characterizing the non-regular, congruence semimodular (CSM) varieties of semigroups. For regular varieties his characterization was an equational one, so necessarily a part of his argument was semigroup-theoretic. But some of his argument involved only cong...

We determine which tangential varieties of homogeneously embedded rational homogeneous varieties are spherical. We determine the homogeneous coordinate rings and rings of covariants of the tangential varieties of homogenously embedded compact Hermitian symmetric spaces (CHSS). We give bounds on the degrees of generators of the ideals of tangential varieties of CHSS and obtain more explicit info...

The routine use of continuous cardiac monitoring in intensive coronary care units has demonstrated a high incidence of cardiac arrhythmias following acute infarction (Julian, Valentine, and Miller, 1964; Meltzer and Kitchell, 1966; Fluck et al., 1967; Lown et al., 1967). A prerequisite in assessing the value of therapeutic measures used to terminate any arrhythmia is that the arrhythmia and its...

The occurrence in 6 patients of premature ventricular beats before reversion to sinus rhythm, after the intravenous administration ofverapamil-for the treatment of supraventricular tachycardia, is reported. Four patients had pre-excitation syndromes (Wolff-Parkinson-White in I and Lown-Ganong-Levine in 3) and one patient had bradycardia-tachycardia syndrome. In the remaining patient, at previou...

A method is developed for determing actual values of circuit elements in a damped sine wave (Lown waveform) defibrillator solely from measurements of the output, using two or more power resistors and a storage oscilloscope. If a defibrillator containing capacitance C, inductance L, and internal resistance RI, is discharged into increasing 5- to 100-ohm resistive loads R, it is shown for underda...

The paper is devoted to the study of Marker’s extensions of sequences of countable structures. In the first part of the paper definability properties of the Marker’s extension are investigated. The results demonstrate that for any sequence of structures the Marker’s extension codes the elements of the sequence so that the n-th structure of the sequence appears positively at the n-th level of th...

Identification and registration of new rice varieties are very important to be free from environmental effects and using molecular markers that are more reliable. The objectives of this study were, first, the identification and distinction of 40 rice varieties consisting of local varieties of Iran, improved varieties, and IRRI varieties using PIC, and discriminating power, second, cluster analy...