Abstract This review summarizes recent applications of ionic liquids (ILs) as 'green' solvents and extractants in the extraction separation Rare Earths (REs), which are widely used a variety high-tech products mining, separation, smelting can greatly damage environment. Conventional imidazolium-based ILs diluents more active than non-coordinating such kerosene n-heptane REs including co-existing thorium. Imidazolium cations be involved cation exchange or forming new complexes with REs(III)...

A series of novel polymer inclusion membranes (PIMs) were prepared and applied in Cr(VI) transport. The PIMs composed bifunctional ionic liquid extractant (Bif-ILE) [trialkylmethylammonium][bis(2,4,4-trimethylpentyl)phosphinate] ([A336][C272]), [trialkylmethylammonium][di-2-ethylhexylphosphinate] ([A336][P204]), or [trialkylmethylammonium][di-(2-ethylhexyl)orthophosphinate] ([A336][P507]) as the carrier, 1-octyl-3-methylimidazolium hexafluorophosphate tetrafluoroborate ([C8mim][PF6] [BF4])...

Pre-travel recommendation is developed to provide a variety of out-of-town Point-of-Interests (POIs) for users planning travel away from their hometowns but have not yet decided on destination. Existing recommender systems work constructing users' latent preferences and inferring intentions check-in sequences. However, there are still two challenges that hamper the performance these approaches: i) Users' interactive data (including hometown check-ins) tend be rare, while candidate POIs come...

Deep space drilling is necessary for appropriate chemical and biological sampling subsurface exploration. The Robotic Planetary Drilling System (RPDS), which currently being developed by our team, designed to be a compact self-propelled, steerable electromechanical system that can penetrate into large depths in planetary bodies. In this paper we present the detailed innovative mechanical design of RPDS. Its main components are: a) drill bit/cuttings bucket, b) rotary propulsion unit...

Planetary gearboxes are widely used in mechanical transmission systems due to their large ratio and high efficiency. In a planetary gearbox, the sun gear is usually set float balance sharing of loads among planet gears. However, this floating will result variation pressure angle, overlap ratio, meshing phase progress when faults occur, be enlarged. previous studies, these parameters were reduced constant. To study influence dynamic on vibration response under different operating conditions,...

According to the topological structure of wireless sensor network for greenhouse, a adaptive weighted fusion algorithm is put forward, which described and analysed by model. The multi-nodes in greenhouse are fused, obtains high precision data reduces retransmission.

To collimate effectively the beam emitted from stacked laser diode in which lasing surfaces of bars are not located a plane, new type fast-axis collimator, refractive cylindrical microlens array with tunable focal lengths, is presented this paper. Each lens has same diameter 300μm but different ranged 430μm to 540μm. By means mask moving lithography and replication technology, was successfully fabricated. The measured divergence after collimator 25mrad, about half one (40mrad) for common...

In this paper we study the design of coring bits with wedge-shape cutting teeth vibratory drills that percussively penetrate into brittle material. The overall bit specific energy is analytically derived as a function spacing and number. It found given dimensions rock material properties, there exist an optimal spacing/depth ratio tooth number minimize hence maximize bit’s drilling rate. Experimental tests were performed to corroborate analytical results. was shown laboratory follow trend...

During spatial remote sensing imaging procedure, combined degradation factors conduce to Gaussian image blurring. The precondition of restoring the degraded is estimate point spread function (PSF) system as precisely possible. Because depredating processes are quite complex, transfer often completely or partly unknown, which makes it difficult identify precise PSF. Considering similarity between quantum process and in probability statistics fields, a novel algorithm proposed by using...

Deep space drilling is necessary for appropriate chemical and biological sampling subsurface exploration. The Smart Space Drilling System (SSDS), which currently being developed at Northeastern University (NU), a compact self-propelled, steerable electromechanical system that can penetrate into large depths in planetary bodies. In this paper we present the detailed design modeling of SSDS. Its main components are: a) drill bit/cuttings bucket, b) rotary propulsion unit including three...

Abstract The role of technology to improve business results in tight reservoirs is becoming more relevant. As companies continue grow practical experience stimulating these reservoirs, the opportunities for improvements fine tune and accurately optimize also grow. Work showing emerging technologies hydraulic fracturing (HF) design was presented 2014 at International Petroleum Technology Conference (IPTC) Doha, Qatar [1]. That paper described tools support low-cost lateral sweet spotting that...

Owing to the limitations of concept frequency for power spectrum and inherent defects Fourier transform, a novel general local is proposed. Based on approach adaptive peak decomposition, dynamic feature in domain varying with parameter r Duffing system driven by periodic signal investigated. And phenomenon bifurcation found. Moreover, coninuous bands exist near central chaos time seriers at different values their shapes are similar. By demodulation analysis Hilbert modulation characteristic...

Based on the modal expansion and field matching technique, S-matrix of a abrupt change is derived. The open resonator with series changes in radius studied, cavity derived by matrix cascading. A computer program was deueloped to calculate scattering result shows good agreement experiment HFSS simulation.

The single event effect of a new domestic developed ASIC (ARINC65 bus transceiver) was evaluated by both ion irradiation test and simulation analysis. sensitive module identified analysis with circuit software output waveform observation software, which provided strong reference for the device manufacturers to follow-up chip design improvement.

During optical remote sensing imaging procedure, the relative motion between sensor and target may corrupt image quality seriously. The precondition of restoring degraded is to estimate point spread function (PSF) system as precisely possible. Because complexity degradation process, transfer often completely or partly unclear, which makes it quite difficult identify analytic model PSF precisely. Inspired by similarity quantum process in probability statistics fields, one reformed multilayer...

This paper proposed a dynamic model-based configuration and scheduling coupling optimization method for an integrated renewable energy system (IES) containing heat pump coupled with phase change material (PCM) storages, considering thermal inertia comfort elasticity. Research results show that elasticity affect the optimal of IES. These would be beneficial to reduction in total cost stability enhancement grid.