A heterotrophic semisolid medium was used with two sensitive assay methods, C(2)H(2) reduction and O(2)-dependent tritium uptake, to determine nitrogenase and hydrogenase activities, respectively. Organisms known to be positive for both activities showed hydrogenase activity in both the presence and absence of 1% C(2)H(2), and thus, it was possible to test a single culture for both activities. ...

Haemolytic complement activity has been shown to be reduced in synovial fluid of patients with rheumatoid arthritis as compared with patients with inflammatory effusions of similar protein content due to other causes (Hedberg, 1963; Pekin and Zvaifler, 1964; Fostiropoulous, Austen, and Bloch, 1965; Peltier, Coste, and Delbarre, 1966; Townes and Sowa, 1970). Anticomplementary activity was not ob...

With a great number of software products that have been developed, bug fixing is difficult due to a large number of submitted bug reports each day. Sometimes developers usually describe the same errors in the different bug reports, these bug reports are called duplicate bug reports, the increasing number of duplicates lead to a large amount of time and effort for identifying and analyzing bug r...

Fructose is specifically taken up by nitrogen-fixing cultures of Anabaena variabilis in the light and lowers the doubling time from 24 to 8 h. The kinetics for both fructose-dependent growth and fructose uptake are exponential. The apparent Km for fructose uptake in N2-fixing cultures is 160 microM for cells not previously exposed to fructose and 50 microM in cells adapted to fructose. Picomola...

using this instrument since a high-speed drill is unable to create tapping motion. To examine the convenience of a 1-step drill-tap, we measured the amount of time required for fixing 10 screws. In doing so, we recorded that a conventional 3-step and the new 2-step drills required 189 and 112 seconds, respectively. Although the total operative time did not change extensively, the use of this in...

The Integer-Overflow-to-Buffer-Overflow (IO2BO) vulnerability is an underestimated threat. Automatically identifying and fixing this kind of vulnerability are critical for software security. In this paper, we present the design and implementation of IntPatch, a compiler extension for automatically fixing IO2BO vulnerabilities in C/C++ programs at compile time. IntPatch utilizes classic type the...

Consider the unit ball, B = D × [0, 1], containing n unknotted arcs a1, a2, . . . , an such that the boundary of each ai lies in D × {0}. The Hilden (or Wicket) group is the mapping class group of B fixing the arcs a1 ∪ a2 ∪ . . . ∪ an setwise and fixing D × {1} pointwise. This group can be considered as a subgroup of the braid group. The pure Hilden group is defined to be the intersection of t...

Software defect data are typically used in reliability modeling to predict the remaining number of defects in order to assess software quality and release decisions. However, in practice such decisions are often constrained by availability of resources. As software gets more complex, testing and fixing defects become difficult to schedule. This paper attempts to predict an estimated time for fi...

We have investigated the ability of murine monoclonal antibodies (MoAb) to lyse human leukemic cells in vitro using human serum as a source of complement (C'). The human C'-fixing ability of five of seven MoAb is documented. Studies with two of these MoAb (BA-1 and BA-2) indicated that their human C'-fixing ability and subsequent lysis of leukemic cells was through activation of the classical p...