During the course of studies on the effect of vitamin K on several respiratory chain enzymes from 1VIycobacterium phlei, it was found that the soluble fraction contained a unique enzyme which required vitamin K suspended in phospholipid for the reduction of thiazolyl blue tetrazolium by malate. Malate oxidation in most tissues is catalyzed by the classical pyridine nucleotide-linked malic dehyd...

This paper might have been subtitled An algorithmicist looks at no free lunch We use simple adversary arguments to redevelop and explore some of the no free lunch NFL theorems and perhaps extend them a lit tle A second goal is to clarify the relationship of NFL theorems to algorithm theory In particular we claim that NFL puts much weaker restrictions on the claims that an evolutionary algorithm...

A well-established and fundamental insight in database the-ory is that negation (also known as complementation) tendsto make queries difficult to process and difficult to reasonabout. Many basic problems are decidable and admit prac-tical algorithms in the case of unions of conjunctive queries,but become difficult or even undecidable when queries areallowed to contain ne...

We propose and evaluate an admission control paradigm for RTDBS in which a transaction is submitted to the system as a pair of processes a primary task and a recovery block The execution requirements of the primary task are not known a priori whereas those of the recovery block are known a priori Upon the submission of a transaction an Admission Control Mechanism is employed to decide whether t...

We present a precise definition of ca use and e ffect in terms of a f undamental notion called unresponsiveness. Our definition is based on Savage's (1954 ) form ulation of decision the­ ory and departs from the traditional view of ca usation in that o ur ca usal assertions are made relative to a set of decisions. An im­ portant conseq uence of this depart ure is that we can reason abo ut ca us...

(i) Routine biochemistry: Plasma BUN, creatinine, electroThis paper deals with the results of clinical and laboratlytes, haematocrit, etc. ory investigations carried out on six chronic uraemic (ii) Erythropoiesis studies: 59Fe, 51Cr, transferrin, reticulopatients who had been on RDT for 1–3 years. They cytes, sternal puncture. presented evidence of dialysis resistant signs and (iii) Blood press...

Ab stract: Ac cord ing to H. F. Osborn, one of the three au thors of ‘Baldwin ef fect’, adap tive evo lu tion may not re quire nei ther nat u ral se lec tion nor the in her i tance of ac quired char ac ter is tics. An adap tive evo lu tion ary change in pop u la tion with out nat u ral se lec tion means that an iden ti cal adap tive change in ge net i cally dif fer ent or gan isms of a pop u la...

The frequency-temperature characteristics of quartz crystal resonators, particularly the frequency stability in a specific temperature range in which the vibration modes could be strongly coupled, has been an important requirement in most applications. The analytical work on the frequency-temperature relations has been done over last decades in many aspects, ranging from fundamental theory of t...

T his research project investigated the motivational basis of skill development in high risk recreation. are two general psychological models which describe the structure of motivation and offer theoretical bases from which to understand both optimal experiences (e.g., flow) and nonoptimal experiences (e.g., fear and anxiety) in high risk recreation. Reversal The­ ory is grounded in the tenet t...

The apparent pK’ of phenol red was determined in buffered NaCI solutions of known compositionat 25#{176} and 370, by both spectrophotometric and visual colonmetric measurement of the concentration ratios of the alkaline to acid form of the indicator. A small but statistically significant difference was obtained by the two procedures. The pK’ values obtained in 0.15M NaCI spectrophotometrically ...