Diagenesis of Xing’anling Oil Reservoir in Sudeerte Area

In order to explore the types of diagenesis in Sudeerte area, through core and thin slice identification, it is clear that the Xing’anling oil layer is mainly affected by compaction, cementation, andrecrystallization. The compaction is mainly early compaction, late pressure dissolution is not obvious; cementation presents two forms of crystalline quartz and amorphous opal; recrystallization is manifested as the conversion process of opal t-ochalcedony quartz

Reduced cortical thickness in primary open-angle glaucoma and its relationship to the retinal nerve fiber layer thickness.

OBJECTIVES: To examine possible changes in cortical thickness and their relationship to retinal nerve fiber layer (RNFL) thickness in patients with primary open-angle glaucoma (POAG). MATERIALS AND METHODS: Thirty-six patients with POAG and 40 matched healthy controls were enrolled in this study. All subjects underwent a comprehensive ophthalmologic examination and a high resolution structural magnetic resonance scan. Cortical thickness analysis was used to assess the changes between patients and controls. Correlations between the thickness of the visual cortex and RNFL thickness were also analyzed. Finally, the relationship between the severity of changes in the visual cortex and RNFL thickness was evaluated by comparing patients with mild and severe groups. RESULTS: POAG patients showed significant bilateral cortical thinning in the anterior half of the visual cortex around the calcarine sulci (left BA 17 and BA 18, right BA17) and in some smaller regions located in the left middle temporal gyrus (BA37) and fusiform gyrus (BA19). The thickness of the visual cortex correlated positively with RNFL thickness (left, r = 0.44, p = 0.01; right, r = 0.38, p = 0.03). Significant differences between mild and severe groups were observed with regard to both RNFL thickness and the thickness of bilateral visual cortex (p < 0.05). CONCLUSION: Our findings indicate that cortical thickness analysis may be sufficiently sensitive to detect cortical alterations in POAG and that the measurement has great potential for clinical application

Forward and backward unidirectional scattering by the core-shell nanocube dimer with balanced gain and loss

An optical nanoantenna consisting of a Au-dielectric core-shell nanocube dimer with switchable directionality was designed and described. Our theoretical model and numerical simulation showed that switching between forward and backward directions can be achieved with balanced gain and loss, using a single element by changing the coefficient κ in the core, which can be defined by the relative phase of the polarizability. The optical response indicated a remarkable dependence on the coefficient κ in the core as well as frequency. The location of the electric field enhancement was specified by the different coefficient κ and, furthermore, the chained optical nanoantenna and coupled electric dipole emitted to the optical nanoantenna played significant roles in unidirectional scattering. This simple method to calculate the feasibility of unidirectional and switchable scattering provides an effective strategy to explore the functionalities of nanophotonic devices.National Natural Science Foundation of China (Grant No. 51474069, and 41472126)Natural Science Foundation of Heilongjiang Province (Grant No. E2016007, E2017010)China Postdoctoral Science Foundation (Grant No. 2016M591510)Young Science Foundation of Northeast Petroleum University (2019QNL-08)Pilot Innovation Foundation of Northeast Petroleum University (Grant No. 2019YDL-16)Science and Technology Project of Jiangxi Provincial Department of Education (Grant No. GJJ190864)Hong Kong Research Grants Council General Research Funds (No. CityU 11205617)City University of Hong Kong Strategic Research Grant (Nos. 7005105 and 7005264

Silica Nanoparticles-Induced Lysozyme Crystallization: Effects of Particle Sizes

This study aimed to explore the effects of nucleate agent sizes on lysozyme crystallization. Silica nanoparticles (SNP) with four different particle sizes of 5 nm, 15 nm, 50 nm, and 100 nm were chosen for investigation. Studies were carried out both microscopically and macroscopically. After adding SNP, the morphological defects of lysozyme crystals decreased, and the number of crystals increases with the size of the SNP. The interaction between SNP and lysozyme was further explored using UV spectroscopy, fluorescence spectroscopy, and Zeta potential. It was found that the interaction between SNP and lysozyme was mainly electrostatic interaction, which increased with the size of SNP. As a result, lysozyme could be attracted to the surface of SNP and aggregated to form the nucleus. Finally, the activity test and circular dichroism showed that SNP had little effect on protein secondary structure

Silica Nanoparticles-Induced Lysozyme Crystallization: Effects of Particle Sizes

This study aimed to explore the effects of nucleate agent sizes on lysozyme crystallization. Silica nanoparticles (SNP) with four different particle sizes of 5 nm, 15 nm, 50 nm, and 100 nm were chosen for investigation. Studies were carried out both microscopically and macroscopically. After adding SNP, the morphological defects of lysozyme crystals decreased, and the number of crystals increases with the size of the SNP. The interaction between SNP and lysozyme was further explored using UV spectroscopy, fluorescence spectroscopy, and Zeta potential. It was found that the interaction between SNP and lysozyme was mainly electrostatic interaction, which increased with the size of SNP. As a result, lysozyme could be attracted to the surface of SNP and aggregated to form the nucleus. Finally, the activity test and circular dichroism showed that SNP had little effect on protein secondary structure

Correlation between cortical thickness (CT) of the calcarine cortex and cumulative retinal nerve fiber layer (RNFL) thickness in POAG patients.

<p>Correlation between cortical thickness (CT) of the calcarine cortex and cumulative retinal nerve fiber layer (RNFL) thickness in POAG patients.</p

Retinal nerve fiber layer thickness (RNFL) thickness differences in bilateral eyes between mild and severe groups.

<p>Retinal nerve fiber layer thickness (RNFL) thickness differences in bilateral eyes between mild and severe groups.</p

Cortical thinning in POAG patients compare to normal controls.

<p>Differences in cortical thickness are superimposed on a hemisphere-unbiased iterative surface template. Color represents the regions of cortical atrophy in patients with POAG.</p

Correlations between cortical thickness of the visual areas and ophthalmic examination indexes.

<p>The labels of the V1 (B), V2 (E), V3v (H), V4 (K) and V5/MT+ (N) visual areas are only displayed on the left inflated surface. However, it should be noted that the average cortical thickness was computed for the homogeneous areas in bilateral hemispheres. RNFL, retinal nerve fiber layer thickness; MD, mean deviation of the visual field.</p

Baseline characteristics of the subjects.

<p>The data are expressed as the mean ± standard deviation. MD, mean deviation; NC, normal controls; MP, mild patients; SP, severe patients.</p><p>^{a, b} The <i>p</i> values for ANOVA and chi-square tests in the 3 groups, respectively.</p><p>^c The <i>p</i> values for the t tests between the MP and SP group.</p><p>Baseline characteristics of the subjects.</p