4,929 research outputs found
QingZhongNian depression in hospitalized patients with chronic renal failure reason analysis and nursing intervention
目的 探讨青中年肾功能衰竭住院患者抑郁心理的原因,促使患者积极配合治疗。方法 对100例慢性肾功能衰竭患者进行护理干预。结果 患者完成角色转换,保持良好的心态积极配合治疗。结论 及时进行有效的护理干预是中青年慢性肾衰竭住院患者保持良好心态的有效方法。Objective: To explore middle aged depression of hospitalized patients with renal failure reason, actively cooperate with treatment. Methods: To the nursing intervention of 100 patients with chronic renal failure. Results: Patients complete the role transformation, maintain good state of mind actively cooperate with treatment. Conclusion: Timely and effective nursing intervention for young and middle-aged patients with chronic renal failure was the effective methods to maintain a good mentality in the hospital
Design of a Flow-Through Voltammetric Sensor Based on an Antimony-Modified Silver Electrode for Determining Lithol Rubine B in Cosmetics
Lithol Rubine B (LRB; the disodium salt of 3-hydroxy-4-[(4-methyl-2-sulfophenyl) azo]-2-naphthalenecarboxylic acid) was detected using high-performance liquid chromatography with an electrochemical (antimony film on silver) detector (HPLC-ECD). For direct current (DC) mode, with the current at a constant potential, and measurements with suitable experimental parameters, a linear concentration from 0.125 to 1.80 μg/mL was found. The detection limit of our method was approximately 2.0 ng/mL. An antimony-modified silver detector was used to demonstrate that LRB is electrochemically reduced in acidic media and to analyze commercial cosmetics to determine their LRB content. Findings using HPLC-ECD and HPLC with an ultraviolet detector were comparable
Bis(1,3-diethylbenzimidazolium) tetrabromidomercurate(II)
In the title compound, (C11H15N2)2[HgBr4], the tetracoordinated HgII center of the complex anion adopts a distorted tetrahedral geometry [Hg—Br = 2.5755 (8)–2.623 (11) Å and Br—Hg—Br = 103.78 (19)–116.4 (3)°]. One of the Br atoms is disordered over two sites [site-occupancy factors = 0.51 (6) and 0.49 (6)]. The N—C—N angles in the cations are 110.7 (6) and 111.4 (7)°. In the crystal packing, a supramolecular chain is formed via both weak intermolecular C—H⋯Br hydrogen bonds and π–π aromatic ring stacking interactions [centroid–centroid separation = 3.803 (1) Å]
Optimal design of passive power filters of an asymmetrical system based on genetic algorithm
AbstractHybrid power filter is effective equipment for preventing harmonic pollution and enhancing power quality. The design of passive power filters is one of the important parts of hybrid power filter. Conventional approaches for the design of passive power filters depend on the experiences and single technology criterions, which are difficult to achieve the optimal solution. An optimal design method based on genetic algorithm is proposed in this paper. Two objectives including minimum total harmonics distortion of current and minimum cost for equipments are constructed, and reactive power compensation is used as constraint condition. The objective functions for an asymmetrical powers system are deduced, thus the fitness functions are determined. And the parameters of passive power filters are achieved by adopting genetic algorithm. Passive power filters applied in practical system are designed and the simulation model is given. Simulation results show that the filter designed by the proposed algorithm has better harmonics suppression effect and lower initial investment for equipments than conventional approaches
SDSS J163459.82+204936.0: A Ringed Infrared-Luminous Quasar with Outflows in both Absorption and Emission Lines
SDSS J1634+2049 is a local (z = 0.1293) infrared-luminous quasar with LIR=
10^11.91 Lsun. We present a detailed multiwavelength study of both the host
galaxy and the nucleus. The host galaxy demonstrates violent, obscured star
formation activities with SFR ~ 140 Msun yr^-1, estimated from either the PAH
emission or IR luminosity. The optical to NIR spectra exhibit a blueshifted
narrow cuspy component in Hb, HeI5876,10830 and other emission lines
consistently with an offset velocity of ~900 km/s, as well as additional
blueshifting phenomena in high-ionization lines , while there exist blueshifted
broad absorption lines (BALs) in NaID and HeI*3889,10830, indicative of the AGN
outflows producing BALs and emission lines. Constrained mutually by the several
BALs with CLOUDY, the physical properties of the absorption-line outflow are
derived as follows: 10^4 < n_H <= 10^5 cm^-3, 10^-1.3 <= U <= 10^-0.7 and
10^22.5<= N_H <= 10^22.9 cm^-2 , similar to those derived for the emission-line
outflows. The similarity suggests a common origin. Taking advantages of both
the absorption lines and outflowing emission lines, we find that the outflow
gas is located at a distance of 48 - 65 pc from the nucleus, and that the
kinetic luminosity of the outflow is 10^44-10^46 erg s^-1. J1634+2049 has a
off-centered galactic ring on the scale of ~ 30 kpc that is proved to be formed
by a recent head-on collision by a nearby galaxy. Thus this quasar is a
valuable object in the transitional phase emerging out of dust enshrouding as
depicted by the co-evolution scenario.Comment: 13 figures, 6 tables; accepted for publication in Ap
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