174 research outputs found
El Ocaso de los dioses
De cada obra s'ha digitalitzat un programa sencer. De la resta s'han digitalitzat les parts que són diferents.Empresa: José F. ArquerOrquestra Simfònica del Gran Teatre del Liceu, director Laszlo HalaszPrograma de la temporada d'hivern 1956-1957 corresponent a la representació de El Ocaso de los Dioses, òpera d'un pròleg i tres actes amb música i llibret de Richard Wagne
Medical resource inventory model for emergency preparation with uncertain demand and stochastic occurrence time under considering different risk preferences at the airport
<div><p>With the high accident rate of civil aviation, medical resource inventory becomes more important for emergency management at the airport. Meanwhile, medical products usually are time-sensitive and short lifetime. Moreover, we find that the optimal medical resource inventory depends on multiple factors such as different risk preferences, the material shelf life and so on. Thus, it becomes very complex in a real-life environment. According to this situation, we construct medical resource inventory decision model for emergency preparation at the airport. Our model is formulated in such a way as to simultaneously consider uncertain demand, stochastic occurrence time and different risk preferences. For solving this problem, a new programming is developed. Finally, a numerical example is presented to illustrate the proposed method. The results show that it is effective for determining the optimal medical resource inventory for emergency preparation with uncertain demand and stochastic occurrence time under considering different risk preferences at the airport.</p></div
The optimal inventory level with different probability.
<p>The optimal inventory level with different probability.</p
Optimal expected cost when G(T) = 0.5 with different risk attitudes.
<p>Optimal expected cost when G(T) = 0.5 with different risk attitudes.</p
Topological Type-II Nodal Line Semimetal and Dirac Semimetal State in Stable Kagome Compound Mg<sub>3</sub>Bi<sub>2</sub>
Topological
type-II nodal line semimetal (NLS) was proposed quite
recently and exhibits distinct properties compared with conventional
type-I NLS. To date, no ambient-condition stable candidate material
has been reported. Here we propose that a stable Kagome compound Mg<sub>3</sub>Bi<sub>2</sub> can host a type-II nodal line state with the
protection of time reversal and spatial inversion symmetries. Similar
to type-I NLSs, the type-II nodal line in Mg<sub>3</sub>Bi<sub>2</sub> is characterized by the drumhead surface states, which has not been
observed in the previous type-II NLSs. The nodal line in Mg<sub>3</sub>Bi<sub>2</sub> can open a minor gap, and a pair of 3D Dirac points
occurs when SOC is included. The SOC-induced gap around the nodal
line is quite small, and the formation of 3D Dirac points is independent
of the nodal line. Therefore, the Mg<sub>3</sub>Bi<sub>2</sub> compound
is expected to be a good candidate to investigate the exotic properties
of both type-II NLS and 3D Dirac semimetal states
The sensitivity analysis of parameter for expiration cost e.
<p>The sensitivity analysis of parameter for expiration cost e.</p
Characterization of a Novel Butachlor Biodegradation Pathway and Cloning of the Debutoxylase (Dbo) Gene Responsible for Debutoxylation of Butachlor in Bacillus sp. hys‑1
Bacillus sp. strain hys-1, which
was isolated from active sludge, could degrade >90% butachlor at
a
concentration of 100 mg/L within 7 days. The present work revealed
that strain hys-1 could mineralize butachlor via the following pathway:
butachlor was initially metabolized to 2-chloro-<i>N</i>-(2,6-diethylphenyl)-<i>N</i>-methylacetamide by debutoxylation
and then transformed to form 2-chloro-<i>N</i>-(2,6-diethylphenyl)Âacetamide
by N-demethylation. Subsequently, it was converted to 2,6-diethylaniline
and further mineralized into CO<sub>2</sub> and H<sub>2</sub>O. In
addition, the catalytic efficiency of crude cell extracts descended
as follows: alachlor > acetochlor > butachlor. Furthermore,
a novel
744 bp gene responsible for transforming butachlor into 2-chloro-<i>N</i>-(2,6-diethylphenyl)-<i>N</i>-methylacetamide
was cloned from strain hys-1 and the encoding debutoxylase was designated
Dbo. Then Dbo was expressed in Escherichia coli BL21 (DE3) and purified using Ni–nitrilotriacetic acid affinity
chromatography. Dbo displayed the highest activity against butachlor
at pH 6.5 and 30 °C. Metal ions played an important role in Dbo
activity. To the best of the authors’ knowledge, this is the
first report that strain hys-1 can mineralize butachlor by a novel
metabolic mechanism and the first identification of a gene encoding
butachlor debutoxylase
The sensitivity analysis of parameter for shortage cost s.
<p>The sensitivity analysis of parameter for shortage cost s.</p
The risk-averse optimal inventory levels when G(T) = 0.75.
<p>The risk-averse optimal inventory levels when G(T) = 0.75.</p
Scenarios during a single stage of emergency preparedness.
<p>Scenarios during a single stage of emergency preparedness.</p
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