Potassium currents were measured using the three-microelectrode voltage-clamp technique in rat omohyoid muscle at temperatures from 1 to 37°C . The currents were fitted according to the Hodgkin-Huxley equations as modified for K currents in frog skeletal muscle (Adrian et al ., 1970x) . The equations provided an approximate description of the time course of activation, the voltage dependence of...

abstractbackground and objectives: black mustard (brassica nigra (l.) koch) is an annual plant belongs brassicaceae. it has a variety of uses in traditional medicine for rheumatic and neurological pain. growth and development and production of medicinal plants, like other plants is influenced by genetic and environmental factors. select the most appropriate planting date and the most favorable ...

Let n4(k; d) be the minimum length of a linear [n; k; d] code over GF(4) for given values of k and d. For codes of dimension "ve, we compute the exact values of n4(5; d) for 75 previously open cases. Additionally, we show that n4(6; 14)=24, n4(7; 9)=18, and n4(7; 10)=20. Moreover, we classify optimal quaternary codes for some values of n and k. c © 2003 Elsevier B.V. All rights reserved.

Given a Euclidean graph G in Rd with n vertices and m edges, we consider the problem of adding an edge to G such that the stretch factor of the resulting graph is minimized. Currently, the fastest algorithm for computing the stretch factor of a graph with positive edge weights runs in O(nm+n2 log n) time, resulting in a trivial O(n3m+n4 log n) time algorithm for computing the optimal edge. Firs...

Planting maize (Zea mays L.) reasonably densely and adding amounts of appropriate nitrogen fertilizer are essential measures to improve the efficiency yield use. In this study, two planting densities 7.5 × 104 plants ha?1 12.0 were established with varieties DengHai 618 (DH618) XianYu 335 (XY335). Simultaneously, 18 levels application established, including a lack (N0) increments 45 kg up 765 (...

A study was done to determine the macroand micronutrient requirements of young northern highbush blueberry plants (Vaccinium corymbosum L. ‘Bluecrop’) during the first 2 years of establishment and to examine how these requirements were affected by the amount of nitrogen (N) fertilizer applied. The plants were spaced 1.2 · 3.0 m apart and fertilized with 0, 50, or 100 kg ha of N, 35 kg ha of pho...

Grain (pulse) legumes could provide high nitrogen (N), late summer forage for stocker cattle in the southern Great Plains (SGP). This study evaluated the forage yield and nutritive value of tropical annual legumes that were relatively uncommon in the SGP, at a site (35°40' N, 98°00' W) in central Oklahoma. Included were cultivars of pigeon pea ([Cajanus cajan (L.) Millsp.], cv. GA-2), guar ([Cy...