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An outstanding goal of physics is to find solutions that describe hadrons in the theory of strong interactions, Quantum Chromodynamics (QCD). For this goal, the light-front Hamiltonian formulation of QCD (LFQCD) is a complementary approach to the well-established lattice gauge method. LFQCD offers access to the hadrons' nonperturbative quark and gluon amplitudes, which are directly testable in experiments at existing and future facilities. We present an overview of the promises and challenges of LFQCD in the context of unsolved issues in QCD that require broadened and accelerated investigation. We identify specific goals of this approach and address its quantifiable uncertainties., Comment: White Paper of International Light Cone Advisory Committee more...

An outstanding goal of physics is to find solutions that describe hadrons in the theory of strong interactions, Quantum Chromodynamics (QCD). For this goal, the light-front Hamiltonian formulation of QCD (LFQCD) is a complementary approach to the well-established lattice gauge method. LFQCD offers access to the hadrons' nonperturbative quark and gluon amplitudes, which are directly testable in experiments at existing and future facilities. We present an overview of the promises and challenges of LFQCD in the context of unsolved issues in QCD that require broadened and accelerated investigation. We identify specific goals of this approach and address its quantifiable uncertainties., Comment: White Paper of International Light Cone Advisory Committee more...

The ethanolic extract (D002) of the Phlebophyllum kunthianum (whole plant) was tested in vitro against Giardia lamblia and has been found to exhibit 100% antigiardial activity at the dose of 125 μg/ml. On bioassay guided fractionation of D002 by using the solvents of different polarity, n-butanol (F005) and aqueous fraction (F006) have been exhibited 100% antigiardial activity at the dose of 500 μg/ml and 250 μg/ml respectively. Fraction F011 prepared from F006 was found to be most active comparable to the D002 and exhibited 100% antigiardial activity at the dose of 125 μg/ml and number of live trophozoits of 13.48 ± 0.97 at the MIC value of 62.5 μg/ml. more...

The ethanolic extract (D002) of the Phlebophyllum kunthianum (whole plant) was tested in vitro against Giardia lamblia and has been found to exhibit 100% antigiardial activity at the dose of 125 μg/ml. On bioassay guided fractionation of D002 by using the solvents of different polarity, n-butanol (F005) and aqueous fraction (F006) have been exhibited 100% antigiardial activity at the dose of 500 μg/ml and 250 μg/ml respectively. Fraction F011 prepared from F006 was found to be most active comparable to the D002 and exhibited 100% antigiardial activity at the dose of 125 μg/ml and number of live trophozoits of 13.48 ± 0.97 at the MIC value of 62.5 μg/ml. more...

Conformally gauge-fixed Polyakov D1 brane action is seen to be a constrained sys tem in the sense of Dirac when it is considered on the light-front in contrast t o the case when it is consdired in the instant-form. The model is quantized usin g the standard constraint quantization techniques on the light-front., Comment: 06pages, conference more...

Light-front quantization of the conformally gauge-fixed Polyakov D1 brane action with a scalar dilaton field is studied using the equal light-cone world-sheet time framework., Comment: 4 pages, 0 figures, conference talk more...

After a brief introduction to D-brane actions, the constrained dynamics and the constraint quantization of some D-brane actions is considered., Comment: ``Plenary Talk'' presented by DSK at THEP-I, I.I.T. Roorkee, Roorkee - 247667, India, March 16-20, 2005 (To appear in the Conference Proceedings) more...