2,280 research outputs found
Bond relaxation, electronic and magnetic behavior of 2D metals structures Y on Li(110) surface
We investigated the bond, electronic and magnetic behavior of adsorption
Yttrium atoms on Lithium (110) surface using a combination of
Bond-order-length-strength(BOLS) correlation and density-functional
theory(DFT). We found that adsorption Y atoms on Li(110) surfaces form
two-dimensional (2D) geometric structures of hexagon, nonagon, solid hexagonal,
quadrangle and triangle. The consistent with the magnetic moment are
6.66{\mu}B, 5.54{\mu}B, 0.28{\mu}B, 1.04{\mu}B, 2.81{\mu}B, respectively. In
addition, this work could pave the way for design new 2D metals electronic and
magnetic properties
The Clinical Efficacy of Yindanxinnaotong Soft Capsule in the Treatment of Stroke and Angina Pectoris: A Meta-Analysis
Objective. To systematically evaluate the clinical efficacy of Yindanxinnaotong (YD) soft capsule in adult patients with cardiovascular diseases (stroke and angina pectoris). Methods. We electronically searched databases including Medline, PubMed, Chinese National Knowledge Infrastructure (CNKI), Cqvip Database (VIP), and Wanfang Database for published articles of randomized controlled trials (RCTs) of YD capsule in treating stroke and angina pectoris. The meta-analysis was performed using RevMan 5.3 software. Results. 49 RCTs involving 6195 subjects with cardiovascular diseases (angina pectoris and stroke) were included. Compared with western conventional medicine (WCM) and/or other Chinese medicines, YD plus WCM therapeutic regimen could significantly improve the efficacy rate (RR = 1.21, 95% CI (1.17, 1.25), P<0.00001 for angina pectoris, RR = 1.24, 95% CI (1.18, 1.31), P<0.00001 for stroke), showing the clinical value. In addition, the therapeutic efficiency of WCM plus YD capsule regimen is better than that of WCM alone in improving CRP (MD = −2.07, 95% CI (−3.97, −0.17), P=0.03 <0.05) and TG (MD = −0.37, 95% CI (−0.52, −0.23), P<0.0001). Conclusion. YD is effective in the treatment of cardiovascular diseases (angina pectoris and stroke) in adults, and WCM plus YD therapeutic regimen can significantly improve the effective rate in the clinic
Effects of low temperature and drought on the physiological and growth changes in oil palm seedlings
Water deficiency and low temperature are two important ecological factors which affect the distribution and cultivation of oil palm. To find out how oil palm adapts to the environmental conditions, the dynamics of a series of important physiological components derived from the leaves of potted oil palm seedlings under drought stress (DS) (water with holding) and low temperature stress (LTS) (10°C) were studied. The results showed that low temperature and water stress inhibited the growth of oil palm seedlings. The relative conductivity, injury index, malondialdehyde (MDA) and proline content in the leaves increased to different degrees with the extension of low temperature and drought stress. Superoxide dismutase (SOD) and peroxidase (POD) activities increased and then decreased gradually with the duration of treatment time. The variations of the earlier mentioned parameters except proline content under low temperature stress were greater than that under drought stress. Thus, oil palm possibly showed different response mechanisms under low temperature and drought stress by mediations of these substances, in order to increase plant defense capability. These data provided the information that was utilized to initiate the breeding programme used to improve drought and cold tolerance in oil palm.Keywords: Oil palm, drought stress, low temperature stress, physiological characteristic
Triply charmed baryons mass decomposition from lattice QCD
We present the first lattice QCD calculation about the mass decomposition of
triply charmed baryons with as and .
The quark mass term contributes about 66\% to the mass
of state, which is slightly lower than that of the meson system
with the same valence charm quark. Furthermore, based on our results, the total
contribution of sea quarks, the gluons and the QCD anomaly accounts for about a
quarter of the mass of these two triply charmed baryons. The mass difference of
and states is mainly from the quark energy
of the QCD energy-momentum tensor. For comparison, the
mass splitting is also calculated under the framework of the constituent quark
model.Comment: 7 page, 14 figure
Efficient Segmentation with Texture in Ore Images Based on Box-supervised Approach
Image segmentation methods have been utilized to determine the particle size
distribution of crushed ores. Due to the complex working environment,
high-powered computing equipment is difficult to deploy. At the same time, the
ore distribution is stacked, and it is difficult to identify the complete
features. To address this issue, an effective box-supervised technique with
texture features is provided for ore image segmentation that can identify
complete and independent ores. Firstly, a ghost feature pyramid network
(Ghost-FPN) is proposed to process the features obtained from the backbone to
reduce redundant semantic information and computation generated by complex
networks. Then, an optimized detection head is proposed to obtain the feature
to maintain accuracy. Finally, Lab color space (Lab) and local binary patterns
(LBP) texture features are combined to form a fusion feature similarity-based
loss function to improve accuracy while incurring no loss. Experiments on MS
COCO have shown that the proposed fusion features are also worth studying on
other types of datasets. Extensive experimental results demonstrate the
effectiveness of the proposed method, which achieves over 50 frames per second
with a small model size of 21.6 MB. Meanwhile, the method maintains a high
level of accuracy compared with the state-of-the-art approaches on ore image
dataset. The source code is available at
\url{https://github.com/MVME-HBUT/OREINST}.Comment: 14 pages, 8 figure
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