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In order to deeply understand the relationship between the microstructural characteristics of volcanic reservoirs and the lithology of volcanic rocks, it provides important theoretical significance for the effective development of volcanic reservoir oil and gas fields. The microscopic characteristics of the volcanic reservoirs of the Yingcheng Formation in the Songliao Basin were analyzed by means of rock section determination, pore structure parameters analysis and casting thin section analysis. The results show that the target layer has low porosity and permeability, and the volcanic pore structure of different lithologies is different. Volcanic lava generally develops original gas pores, phenocryst dissolved pores, matrix dissolved pores, and tectoclase, while volcanic clastic rocks generally have developmental dissolution pores as the main feature. The micro-heterogeneity of volcanic reservoirs is generally strong, and the development of tectonic fractures is an important factor in changing the reservoir performance of volcanic rocks.

The late Triassic Outstanding and Xinling rock exposed adjacently and both belonged to late Triassic grannitic magmatic events in Qingchengzi mining area of Liaoning-Jilin rift belt. The deep boundaries were determined and deep distribution morphology were explored. Hence, we found out the deep connectivity condition between the two rock. Applying the gravity and magnetic anomaly datas of 1:200000 scales in Dan dong area, and the processing interpretation of high-precision gravity magnetic survey datas and MT measured non seismic geophysical datas of two comprehensive profiles, simultaneously combined with measured density data of the samples, we performed comprehensive analysis on the basis of various anomalous signs , constrained rock morphology to control the profile and selected reasonable inversion parameters to carry out the gravity and magnetotelluric sounding joint inversion constraint by basic geological information. On basis of the work above, the deep geological structure inversion of 4 auxiliary profiles were completed, the rock spatial distribution geometrical morphology were found out, besides, the connectivity of the concealed rock underground between the two rock were determined. These provide reference for studying spatial distribution, ways the rock occurred and relationship between the mineral distribution and spatial distribution.

Node sleep scheduling is one of the most important methods to improve energy-constrained wireless sensor networks. Most existing approaches to solve this problem require sensors' location information, which may be impractical considering high positioning costs. In this paper, an energy balanced non-uniform distribution node scheduling algorithm (EBNDNS) is proposed and evaluated. This method needs distance between sensors instead of location information. A simple non-uniform distribution strategy is also proposed. Combined with this strategy, simulation results show that EBNDNS can relieve the "energy-hole" problem for the multi-hop communication and significantly prolong the lifetime of networks.

Studies conducted in drug addiction suggest a transition in processing of drug-related cues from the ventral to the dorsal component of the striatum. However, this process has not been studied in a behavioral addiction. Assessment of this process in a non-drug addiction can provide insight into the pathophysiology of both substance and behavioral addictions. Thirty-nine male IGD subjects and 23 male matched healthy controls (HCs) participated in functional magnetic resonance imaging (fMRI) during performance of a cue-reactivity task involving alternating presentation of Internet gaming-related stimuli (game cues) and general Internet surfing-related stimuli (control cues). Cue-induced neural activations in the ventral and dorsal striatum were compared between IGD and HC participants. Associations between cue-reactivity within these regions and cue-induced craving and severity and duration of IGD were also explored. IGD participants exhibited higher cue-induced activations within both the ventral and dorsal striatum (DS) when compared to HCs. Within the IGD group, activity within the left ventral striatum (VS) was correlated negatively with cue-induced craving; positive associations were found between activations within the DS (right putamen, pallidum and left caudate) and duration of IGD. Cue-induced activity within the left putamen was negatively associated with right VS volumes among IGD participants. Consistent with studies in substance addictions, our results suggest that a transition from ventral to dorsal striatal processing may occur among individuals with Internet gaming disorder, a condition without the impact of substance intake.

The transfer characteristics of an atomic beam and the effect of laser were investigated in this paper. In the application of knife-edge technique, the temperature of atoms through laser cooling was measured. Results indicate that, after atoms are emitted from an atomic oven, the longer the atoms move, the worse the distribution of the atomic beam shows, regardless the laser cooling is taken or not. Laser cooling can reduce the transverse velocity of the atomic beam to several orders of magnitude and also increase the uniformity of an atomic beam. Knife-edge technique can measure the temperature of an atomic beam through laser cooling. The measurement accuracy depends on the pixel size of the charge coupled device (CCD), which is used for the fluorescent imaging of the atomic beam. The results are very important for the future experiments of laser cooling.

Additional file 1. Correlations between VTA-NACC connectivity and IGD severity/subjective craving within each group, and the whole-brain between-group differences in resting state functional connectivity of VTA/NACC.

The technology of laser-focused atomic deposition can be used to develop the nanostrucrure transfer standard of length. When the frequency of laser standing wave is higher than the resonant frequency of atoms, the atoms will be focused on the wave node of the standing wave. The collimated Cr atoms are focused by a standing-wave laser field as they are deposited on a silicon substrate. Atomic force microscopy measurements shows a spacing of 215nm.

The laser-focused atomic deposition is a new way to build the nano transfer standard of high reliability adequate for application. Based on the semi-classical model, this paper starts from the motion equation of chromium atom in the laser standing wave field to get the trajectory of the atoms in the standing wave field by analytical simulation. The effects on focal line features are discussed as a result of the angular collimation, velocity spread in the atomic beam and the spherical aberration. The effects from different deposition positions are also discussed. This paper also gives a sample of the grating structure nanofabricated by laser focusing of Cr atoms.

A grating structure with the period of half of the laser wavelength is formed by focusing the atoms with a nearly resonant laser standing wave field. The motion of sodium atoms traversing an unsaturated potential are studied by the semi_classical approximation. The structures of gratings under various conditions were simulated using numerical method. By characterizing the grating with FWHM and contrast, the influence of some factors, such as the transverse temperature, the longitudinal velocity, and the free flight to the atom deposition are analysed. Our work provides a theoretical basis to the ongoing atom lithography experiment.

Laser collimation of Cr atomic beam using a transverse Doppler cooling scheme is studied. The frequency of laser is stabilized at 5±0.26MHz below the 7S3→7PO452Cr transition. The shortest size of the laser cooling beam is computed theoretically to be 13.7mm. Accordingly a Cr beam was collimated using a transverse Doppler cooling scheme. We obtained that the transverse distribution of Cr beam is less than 1/3 of the uncooled beam.

Piezoelectricity of non-polar space charge electret, porous PTFE film with unidi rectional mechanical stretch was studied. Piezoelectricity of double-layer stack s of porous PTFE and non-porous polymer films (such as PTFE, PI, FEP and PCTFE) with space charge layer were investigated. The results of preliminary investigat ion pointed out that under the optimal poling conditions, piezoelectric coeffici ent d33 of porous PTFE with external electrode was up to 186 pC/N whi c h is close to the value of ferroelectric ceramics PZT, and was about one order o f magnitude that of ferroelectric polymer PVDF. Outstanding thermal stability of piezoelectricity for soft PTFE porous film was reported. Influences of poling parameters such as poling time, corona electrical field and charging temperature etc, as well as charge density stored in the material on piezoelectricity were investigated. The influences of charging parameters on piezoelectricity were also explained by means of charge dynamic character and the material property.