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81.
M. E. Sánchez A. Morán A. Escapa L. F. Calvo O. Martínez 《Journal of Thermal Analysis and Calorimetry》2007,90(1):209-215
A thermogravimetric (TG) and mass spectrometric (MS) study was carried out of the process of devolatilization of the organic
fraction of municipal solid wastes (OFMSW) and polyethylene terephthalate (PET). This involved an analysis of the heating
profiles in an inert atmosphere for each of these residues separately and for a mixture made up of half of each by mass. The
fit between the experimental and calculated values was checked by means of the least squares method. No interaction at all
was observed between the two types of waste when the fit between the experimental and theoretical figures was checked, in
the light of the low values obtained from the objective function showing fit. The study of mass spectrometry shows major emissions
of energy-producing gases although fewer pollutants are emitted. 相似文献
82.
83.
A proportionate flowshop is a special case of the classical flowshop, where the job processing times are machine-independent. We study the problem of minimizing the number of early jobs in this machine setting. This objective function has hardly been investigated on a single machine, and never on a flowshop. We introduce an efficient iterative solution algorithm. In each iteration, a single job is moved to the first position (and is added to the set of early jobs), and the remaining jobs are rescheduled such that the maximum earliness is minimized. The algorithm guarantees an optimal solution in O(n3) time, where n is the number of jobs. 相似文献
84.
Ganguly Soumya Gaonkar Raghuvir H. Sinha Samarendu Gupta Amit Chattopadhyay Dipankar Chattopadhyay Sankha Sachdeva Satbir S. Ganguly Shantanu Debnath Mita C. 《Journal of nanoparticle research》2016,18(7):1-21
Journal of Nanoparticle Research - This paper investigates the global nanotechnology and nanoscience (NN) indicators in a developmental context, during three 5-year periods from 2000 to 2014.... 相似文献
85.
Dr. Matteo Incerti Dr. Daniele Pala Dr. Carmine Giorgio Dr. Jlenia Brunetti Prof. Luisa Bracci Prof. Paola Vicini Prof. Elisabetta Barocelli Dr. Luigi Capoferri Prof. Silvia Rivara Prof. Massimiliano Tognolini Prof. Marco Mor Prof. Alessio Lodola 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(24):8048-8052
The free‐energy surface (FES) of protein–ligand binding contains information useful for drug design. Here we show how to exploit a free‐energy minimum of a protein‐ligand complex identified by metadynamics simulations to design a new EphA2 antagonist with improved inhibitory potency. 相似文献
86.
Pascal Miéville Puneet Ahuja Dr. Riddhiman Sarkar Dr. Sami Jannin Dr. Paul R. Vasos Dr. Sandrine Gerber‐Lemaire Dr. Mor Mishkovsky Dr. Arnaud Comment Prof. Rolf Gruetter Dr. Olivier Ouari Prof. Paul Tordo Prof. Geoffrey Bodenhausen 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2010,122(43):8004-8004
87.
The densities of pyridine, 2-picoline, 3-picoline, and 4-picoline were measured at elevated pressures (0.1 to 40) MPa at four temperatures over the range (298.15 to 328.15) K with a high-pressure apparatus. The high-pressure density data were fitted to the Tait equation and the isothermal compressibility were calculated with a novel computation procedure with the aid of this equation. 相似文献
88.
Macías A Ramallal AM Alonso E del Pozo C González J 《The Journal of organic chemistry》2006,71(20):7721-7730
The synthesis of the two enantiomers of pyrrolidine-derived spiro beta-lactams by resolution with D- and L-Boc phenylalanine is described. The potential of these optically active spiro beta-lactams on the synthesis of peptidomimetics as analogues of melanostatin is evaluated. Theoretical studies of several models, at the Becke3LYP/6-31+G* level of theory, together with previous experimental evidences from our group, gathered by NMR, allow us to design structures that can efficiently mimic some biologically active peptide-type molecules. On the other hand, the spiro beta-lactams have shown their utility in the preparation of beta-peptides. As an example, a homo-tetra-beta-peptide was synthesized. This research will continue in the future in order to obtain higher peptides with potential biological activity. 相似文献
89.
Mathematical Programming - Given $$P\subset {\mathbb {R}}^n$$, a mixed-integer set $$P^I=P\cap ({\mathbb {Z}}^{t}\times {\mathbb {R}}^{n-t}$$), and a k-tuple of n-dimensional integral vectors... 相似文献
90.
The M/G/K queueing system is one of the oldest models for multiserver systems and has been the topic of performance papers for almost
half a century. However, even now, only coarse approximations exist for its mean waiting time. All the closed-form (nonnumerical)
approximations in the literature are based on (at most) the first two moments of the job size distribution. In this paper
we prove that no approximation based on only the first two moments can be accurate for all job size distributions, and we
provide a lower bound on the inapproximability ratio, which we refer to as “the gap.” This is the first such result in the
literature to address “the gap.” The proof technique behind this result is novel as well and combines mean value analysis,
sample path techniques, scheduling, regenerative arguments, and asymptotic estimates. Finally, our work provides insight into
the effect of higher moments of the job size distribution on the mean waiting time. 相似文献