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The present paper discusses enhanced flow in a capacitated indefinite quadratic transportation problem. Sometimes, situations arise where either reserve stocks have to be kept at the supply points say, for emergencies, or there may be extra demand in the markets. In such situations, the total flow needs to be controlled or enhanced. In this paper, a special class of transportation problems is studied, where the total transportation flow is enhanced to a known specified level. A related indefinite quadratic transportation problem is formulated, and it is shown that to each basic feasible solution called comer feasible solution to related transportation problem, there is a corresponding feasible solution to this enhanced flow problem. The optimal solution to enhanced flow problem may be obtained from the optimal solution to the related transportation problem. An algorithm is presented to solve a capacitated indefinite quadratic transportation problem with enhanced flow. Numerical illustrations are also included in support of the theory. Computational software GAMS is also used. [ABSTRACT FROM AUTHOR]

In the present paper a fixed charge bi-criterion quadratic transportation problem with enhanced flow is studied. An algorithm to find an efficient cost-time trade off pairs in a fixed charge bi-criterion quadratic transportation problem is presented. A related fixed charge bi-criterion quadratic transportation problem is formulated and the efficient cost-time trades off pairs to the given problem are shown to be derivable from this related problem. The algorithm is illustrated with the help of a numerical example. [ABSTRACT FROM AUTHOR]

The high-spin decay of 71Se was studied using the 54Fe(23Na,αpn) reaction at 80 MeV and the Florida State University Compton-suppressed Ge array consisting of three clover detectors and seven single-crystal detectors. Based on prompt γ-γ coincidences measured in the experiment, the known level scheme was enhanced and extended to higher spin with 19 new transitions. A band that was previously suggested to have positive parity was reassigned as the "missing" signature partner of an existing negative-parity band. Spins were assigned based on directional correlation of oriented nuclei ratios. Lifetimes of 17 excited states were measured using the Doppler-shift attenuation method. Experimental Qt values imply an intermediate degree of collective behavior for 71Se at high spin. Theoretical Qt values determined from cranked Woods-Saxon (CWS) calculations show better agreement with the experimental ones for the positive-parity states than the negative-parity states. Shape competition and γ softness characterize the low-spin states of the lowest positive- and negative-parity bands based on the CWS calculations. At high spin, triaxial shapes with γ > 0° are predicted. [ABSTRACT FROM AUTHOR]

High-spin states in 71As were studied using the 54Fe(23Na,α2p) reaction at 80 MeV. Prompt γ-γ coincidences were measured using the Florida State University Compton-suppressed Ge array consisting of three clover detectors and seven single-crystal detectors. The existing high-spin level scheme has been verified, and 21 new transitions have been added based on an investigation of weak γ-ray coincidence relations and relative γ-ray intensities. Lifetimes of 16 excited states were measured using the Doppler-shift attenuation method applied to the experimental line shapes of decays in all of the known rotational bands. The B(E2) strengths inferred from the lifetimes indicate that moderate to high collective behavior persists to the highest observed spins in the lowest positive- and negative-parity bands, in qualitative agreement with projected shell-model calculations. The band suggested to be based on the πf7/2 orbital shows a similar degree of collectivity within the same spin range, with B(E2) values in good agreement with those predicted by the projected shell model assuming a constant prolate deformation of ϵ2 = +0.27. The experimental Q1 values in this band are somewhat smaller than predicted by cranked Woods-Saxon calculations. [ABSTRACT FROM AUTHOR]

Thirty four healthy young male subjects performed symptom limited exercise on Bruce protocol on treadmill machine. Hyperventilation induced labile repolarisation ST-T abnormalities were observed in 2 whereas exercise induced ST changes (upsloping ST depression in 4 and horizontal ST depression in 1) were observed in 5 additional candidates. Changes were unaccompanied by symptoms or signs and quickly reverted back to normal within 30 sec. of cessation of exercise and hence were 'probable false positives'. Sixty-eight age and sex matched volunteers (including former 34) when exercised on Master's stepper, failed to reveal any change probably due to the lack of continuous ECG monitoring device.

Serum calcium, inorganic phosphorus and alkaline phosphatase (SAP) have been determined in 75 lactating women and 25 controls. 25 lactating women were re-investigated after administration of calcium and vitamin D supplements of 1 month. Lactating women showed statistically significant hypocalcaemia and raised SAP. However, the elevation of the enzyme level was significantly lower in women with milk intakes of more than 1/2 litre per day and in those in later months of lactation. The effects of calcium and vitamin D supplementation supported a diagnosis of osteomalacia in a large percentage of lactating women.

Circadian periodicity of plasma, breast milk and urinary calcium was studied in six lactating Indian women. Peak plasma calcium was recorded at 2000 with a progressive decline during the rest of the period reaching a minimum at 0800. Breast milk calcium was found to be maximum at 0200 and decreased consistently reaching a minimum at 2000. Maximum urinary calcium was observed at 0600 to 1200 with a minimum excretion at 1800 to 0000. A marked circadian variation during the 24 hour period was noticed in plasma, breast milk and urinary calcium confirming a definite rhythm of endogenous body calcium in lactating Indian women. Thus, there we found significant diurnal rhythm in body calcium at all levels and each of them might be initiating the other rhythm, partly governed by the day-night cycle in tropical conditions.