The cytoplasmic domain of band 3 (CDB3) offers binding sites for several glycolytic enzymes and regulates the glycolysis of erythrocyte. The interaction between recombinant (His)(6)-tagged CDB3 and aldolase, one of the key enzymes that participated in erythrocyte glycolysis, was investigated in the presence of lanthanide. The results indicate that trace lanthanide blocks the inhibition of CDB3-(His)(6) to aldolase and leads to enhancement of aldolase activity. In agreement with activity studies, fluorescence spectra reveal that 4 microM lanthanum ions induce the complete dissociation of aldolase from the N-terminal of CDB3-(His)(6). Interestingly, the synchronous scanning fluorescence spectra of proteins in the presence of various concentrations of lanthanum ions suggest that the conformational change of CDB3-(His)(6) is significantly attributed to the alteration of tryptophan cluster microenvironment, while the aldolase conformation change is mainly derived from tyrosine microenvironment changes. Based on the observation that lanthanide ions induce the dissociation of aldolase from CDB3-(His)(6), it is suggested that the existence of trace lanthanide may affect the glycolysis of erythrocyte.

The fluctuations in the excitation functions of the dissipative collision induced on the Al-27+Al-27 system have been studied in the laboratory energy range 114.2-123 MeV. The amplitude of the fluctuations, the average angular distributions, the energy autocorrelation functions, and the angular correlation functions have been studied in the framework of the partially overlapped molecular level model. The comparisons with the model allow us to estimate the characteristic times involved in the process, the degree of coherent rotations, and the density of molecular states through which the collision evolves. In particular the study of the angular correlations also reveals the coupling effects between rotational and intrinsic degree of freedom of the intermediate dinuclear system.

Angular correlation of excitation functions in dissipative heavy ion collision 27A1+27A1 has been measured. The incident beam energies ranged from 114 MeV to 127 MeV in steps of 200 keV. The angular analysis region was continuous from 50° to 90° in the center of mass system. An angular coherent width, at least 40°, was obtained. This long-range angular correlation could not be interpreted in the framework of the standard statistical reaction theory with state of equilibrium or near equilibrium, maybe it reveals the formation of a new kind of dissipative structure in the reaction of 27A1+27A1 with the state that is far from equilibrium.

The fluctuations in the excitation functions of the dissipative collision induced on the ${}^{27}\mathrm{Al}{+}^{27}\mathrm{Al}$ system have been studied in the laboratory energy range 114.2--123 MeV. The amplitude of the fluctuations, the average angular distributions, the energy autocorrelation functions, and the angular correlation functions have been studied in the framework of the partially overlapped molecular level model. The comparisons with the model allow us to estimate the characteristic times involved in the process, the degree of coherent rotations, and the density of molecular states through which the collision evolves. In particular the study of the angular correlations also reveals the coupling effects between rotational and intrinsic degree of freedom of the intermediate dinuclear system.

The angular distributions of intermediate mass fragments with Z = 3-19 emitted in 30 MeV/u 40Ar+ 58,64Ni and 115In reactions over an angular range of 5°-140° have been measured. Exponential distribution function: dσ/dΩ = N • exp(-θ/ α) was used to fit the measured angular distributions. We have extracted the decay factor α that can be connected with the interaction time τ, and the factor N that is related to the intensity of the emission source. The relationships of α (Z) with Z and N(Z) with Z for different reaction systems and different angular ranges have been discussed. The dependence of angular distributions on isospin and the symmetry of reaction system have also been discussed.

The excitation functions of dissipative products have been measured in the reaction 27Al+27Al at incident energies from 114 to 127 MeV in steps of 200 keV. Detection angles vary continuously from 10.4° to 57.4° in laboratory system. An angular coherent width more than 40° in center of mass is obtained. The results from the analysis of excitation functions with nonself-averaging are characterized by a quasi-periodic long-range energy structure embedded in the disorder Ericson fluctuation.

Two low-lying isomeric states in 169Ta have been identified via 159Tb(16O,6nγ)169Ta reaction. Their half-lives are measured to be 28 ± 5 ns for the 9/2− level and 17 ± 4 ns for the 5/2− level by using the delayed γ-γ coincidence method. These two isomeric states are considered to be the bandheads with 9/2−[514] and 1/2−[541] configurations respectively.

By employing the method of double ratios of isotope yields, the nuclear temperature parameters for the reactions of 30 MeV/u 40Ar bombarding 58M, 64Ni and 115In targets, are extracted by yields of the fragments of 3≤Z≤8. The dependences of the apparent temperature on some observables are investigated. The temperature values after correction for the side-feeding effects are also deduced and discussed.

High spin states in 170Ta have been studied via 159Tb(16O,5nγ)170Ta reaction through excitation functions, K X-γ and γ-γ-t coincidence measurements. Three rotational bands have been identified among which one coupled band and an unfavored δI=2 E2 transition sequence are newly found in this work. The possible quasiparticle configurations of these bands are discussed.

Solvent extraction of Ce(IV), Th(IV) with Cyanex 923 in n-hexane from sulphuric acid medium was studied with the dependence of the extraction on acidity and temperature being investigated. The Ce(IV) and Th(IV) extraction mechanism was proposed by slope analysis and the IR spectra of purified Cyanex 923 saturated with Ce(IV) were employed to determine the composition of the Ce(IV) complex. The equilibrium constant and thermodynamic functions of Th(IV) extraction were calculated and the characteristics of the stripping of Ce(IV), Th(IV) from the loaded organic phase were studied.

In this paper, the target-dependence of neutron-proton ratio of the projectile-like fragments, produced in the peripheral heavy-ion collisions, is discussed based on the comparison between the experimental results and the isospin dependent QMD model calculations.

Two low-lying isomeric states in 169Ta have been identified via 159Tb(16O, 6nγ)169Ta reaction. Their half-lives are measured to be 28 ± 5 ns for the 9/2- level and 17 ± 4 ns for the 5/2- level by using the delayed γ-γ coincidence method. These two isomeric states are considered to be the bandheads with 9/2-[514] and 1/2-[541] configurations, respectively. Possible neutron quasiparticle configuration for the ground state of 169W is discussed.

High spin states in Ta-170 have been studied via Tb-159(O-16, 5n gamma)Ta-170 reaction at 105 MeV beam energy. Three rotational bands have been observed among which one coupled band and an unfavored Delta I = 2 transition sequence of the semidecoupled band are identified in this work. The effects of the pi 1/2(-)[541] proton intruder orbital are qualitatively discussed.

A strong signal for double parton scattering (DP) is observed in a 16 pb{sup {minus}1} sample of {bar p}p{r_arrow}{gamma}+3 jets+X data from the CDF experiment at the Fermilab Tevatron. The process-independent DP parameter, {sigma}{sub eff}, is obtained without reference to theoretical calculations by comparing observed DP events to events with hard scatterings at separate {bar p}p collisions. The result, {sigma}{sub eff}=(14.5{plus_minus}1.7{sup +1 .7}{sub {minus}2.3}) mb , represents a significant improvement over previous measurements. For the first time, the Feynman x dependence of the {sigma}{sub eff} parameter is investigated, and no dependence is seen. {copyright} {ital 1997} {ital The American Physical Society}

High spin states in 170Ta have been studied via 159Tb(16O, 5nγ)170Ta reaction at 105 MeV beam energy. Three rotational bands have been observed among which one coupled band and an unfavored ΔI = 2 transition sequence of the semidecoupled band are identified in this work. The effects of the π½-[541] proton intruder orbital are qualitatively discussed.

Excitation functions of the projectile-like fragments in the dissipative reaction 19 F+ 51 V have been measured at θ 1 = 21.7°, 36.1° and 40.5°. The incident energies are from 102.25 to 109.50 MeV in 250 keV steps. The energy coherence width г and the rotation angular velocities ω of the corresponding dinuclear systems are extracted. The coherence rotation and its importance in the reaction process are discussed.

In the framework of the transport theory, the distribution of coherent In the framework of the transport theory, the distribution of coherent

Excitation functions for projectile-like fragments from 19F+51V dissipative reaction were measured at angles equal to 21.7��, 36.1�� and 40.5�� within the energy range 102.25-109.50 MeV in steps of 250 keV (in lab), where 19F8+ beams were extracted from the HI-13 Tandem Accelerator at CLAE, Beijing, China. Coherence energy was extracted by generalized statistical fluctuation analysis. The dependence on charge number and on N/Z values were obtained. The rotation of intermediate dinuclear system results in the angular dependence of coherence energy. The angular velocity damping is attributed to the relative angular momentum dissipation in the reaction.