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Fingerprint analysis of Resina Draconis by ultra-performance liquid chromatography

Background Resina Draconis, a bright red resin derived from Dracaena cochinchinensis, is a traditional medicine used in China. To improve its quality control approach, an ultra-performance liquid chromatography (UPLC) fingerprint method was developed for rapidly evaluating the quality of Resina Draconis. Methods The precision, repeatability and stability of the proposed UPLC method ...

Comprehensive Overview on Computational Intelligence Techniques for Machinery Condition Monitoring and Fault Diagnosis

applications. E-mail: Lin Zhu, born in 1989, is currently a PhD candidate at School of Mechanical Engineering, Southeast University, Nanjing, China. He received his master degree from Guangxi University of

Photocatalytic Properties of Co3O4-Coated TiO2 Powders Prepared by Plasma-Enhanced Atomic Layer Deposition

Co3O4-coated commercial TiO2 powders (P25) p-n junction photocatalysts were prepared by plasma-enhanced atomic layer deposition (PEALD) technique. The structure, morphology, bandgap, and photocatalytic properties under ultraviolet light were investigated systematically. Although the deposition of Co3O4 does not change the anatase structure and crystallite size of P25 powders, the ...

RNA-seq approach to analysis of gene expression profiles in dark green islands and light green tissues of Cucumber mosaic virus-infected Nicotiana tabacum

Dark green islands (DGIs) surrounded by light green tissues (LGTs) are common leaf symptoms of plants that are systemically infected by various viruses that induce leaf mosaic in infected plants. The inoculation of Cucumber mosaic virus (CMV) in Nicotiana tabacum produced a commonly occurring sequence of classic patterns of DGIs and LGTs. Previous studies confirmed that there are ...

Change in iron metabolism in rats after renal ischemia/reperfusion injury

Previous studies have indicated that hepcidin, which can regulate iron efflux by binding to ferroportin-1 (FPN1) and inducing its internalization and degradation, acts as the critical factor in the regulation of iron metabolism. However, it is unknown whether hepcidin is involved in acute renal ischemia/reperfusion injury (IRI). In this study, an IRI rat model was established via ...

Functional restoration of CD56bright NK cells facilitates immune control via IL-15 and NKG2D in patients under antiviral treatment for chronic hepatitis B

Chen, Lin Zhu, Aichao Shi, Lin Ding, Xiaoping Zhang, Zhenmin Tan, Wei Guo, Weiming Yan, Meifang Han, Jidong Jia, Xiaoping Luo and Detlef Schuppan have no conflicts of interest to declare. Ethical

Understanding the internal structures of X(4140), X(4274), X(4500) and X(4700)

Eur. Phys. J. C Hua-Xing Chen Er-Liang Cui Wei Chen Xiang Liu Shi-Lin Zhu We investigate the newly observed X (4500) and X (4700) based on the diquark-antidiquark configuration within the

Bipolar Resistive Switching Characteristics of HfO2/TiO2/HfO2 Trilayer-Structure RRAM Devices on Pt and TiN-Coated Substrates Fabricated by Atomic Layer Deposition

The HfO2/TiO2/HfO2 trilayer-structure resistive random access memory (RRAM) devices have been fabricated on Pt- and TiN-coated Si substrates with Pt top electrodes by atomic layer deposition (ALD). The effect of the bottom electrodes of Pt and TiN on the resistive switching properties of trilayer-structure units has been investigated. Both Pt/HfO2/TiO2/HfO2/Pt and ...

Taxonomy and Phylogeny of Polyporus Group Melanopus (Polyporales, Basidiomycota) from China

Melanopus is a morphological group of Polyporus which contains species with a black cuticle on the stipe. In this article, taxonomic and phylogenetic studies on Melanopus group were carried out on the basis of morphological characters and phylogenetic evidence of DNA sequences of multiple loci including the internal transcribed spacer (ITS) regions, the large subunit nuclear ...

Improving the thermostability and stress tolerance of an archaeon hyperthermophilic superoxide dismutase by fusion with a unique N-terminal domain

The superoxide dismutase from the archaeon Sulfolobus solfataricus (SOD Ss ) is a well-studied hyperthermophilic SOD with crystal structure and possible thermostability factors characterized. Previously, we discovered an N-terminal domain (NTD) in a thermophilic SOD from Geobacillus thermodenitrificans NG80-2 which confers heat resistance on homologous mesophilic SODs. The present ...

Searching for hidden-charm baryonium signals in QCD sum rules

We give an explicit QCD sum rule investigation for hidden-charm baryonium states with the quark content \(u\bar{u} d\bar{d} c\bar{c}\), spin \(J=0/1/2/3\), and of both positive and negative parities. We systematically construct the relevant local hidden-charm baryonium interpolating currents, which can actually couple to various structures, including hidden-charm baryonium states, ...

Predictions of the hidden-charm molecular states with the four quark components

In this work, we study the \(T\bar{T}\)-type molecular systems systematically via the one pion exchange model, where T denotes the narrow \(J^P=1^+\) \(D_1\) meson or \(2^+\) \(D_2^*\) meson and \(\bar{T}\) is its antiparticle. With the effective potentials, we try to find the bound-state solutions of the corresponding systems, which provide crucial information of whether ...

QCD sum rule study of hidden-charm pentaquarks

We study the mass spectra of hidden-charm pentaquarks having spin \(J = {1\over 2}/{3\over 2}/{5\over 2}\) and quark contents \(uud c \bar{c}\). We systematically construct all the relevant local hidden-charm pentaquark currents, and we select some of them to perform QCD sum rule analyses. We find that the \(P_c(4380)\) and \(P_c(4450)\) can be identified as hidden-charm pentaquark ...

Radiative leptonic \(B_c\rightarrow \gamma \ell {\bar{\nu }}\) decay in effective field theory beyond leading order

We study the radiative leptonic \(B_c\rightarrow \gamma \ell {\bar{\nu }}\) decays in nonrelativistic QCD effective field theory, and we explore the contribution from a fast-moving photon. As a result, interactions between the photon and the heavy quarks can be integrated out, resulting in the factorization formula for the decay amplitude. We calculate not only the relevant ...

Laboratory investigation of the strength development of alkali-activated slag-stabilized chloride saline soil

Saline soil stabilization is being increasingly applied in foundation treatment engineering. Chloride saline soil obtained from sites and laboratory-made chloride soil (ZS) with various NaCl concentrations prepared artificially were stabilized using alkali-activated slag (AS). A series of unconfined compressive strength (UCS) tests, X-ray diffraction (XRD), energy-dispersive X-ray ...

Preparation of Two Types of Polymeric Micelles Based on Poly(β-L-Malic Acid) for Antitumor Drug Delivery

Polymeric micelles represent an effective delivery system for poorly water-soluble anticancer drugs. In this work, two types of CPT-conjugated polymers were synthesized based on poly(β-L-malic acid) (PMLA) derivatives. Folic acid (FA) was introduced into the polymers as tumor targeting group. The micellization behaviors of these polymers and antitumor activity of different ...

HPV16 integration probably contributes to cervical oncogenesis through interrupting tumor suppressor genes and inducing chromosome instability

Background The integration of human papilloma virus (HPV) into host genome is one of the critical steps that lead to the progression of precancerous lesion into cancer. However, the mechanisms and consequences of such integration events are poorly understood. This study aims to explore those questions by studying high risk HPV16 integration in women with cervical intraepithelial ...

Comparative structural analysis of Bru1 region homeologs in Saccharum spontaneum and S. officinarum

Background Sugarcane is a major sugar and biofuel crop, but genomic research and molecular breeding have lagged behind other major crops due to the complexity of auto-allopolyploid genomes. Sugarcane cultivars are frequently aneuploid with chromosome number ranging from 100 to 130, consisting of 70–80 % S. officinarum, 10–20 % S. spontaneum, and 10 % recombinants between these two ...

Structural and Functional Analysis of Calcium Ion Mediated Binding of 5-Lipoxygenase to Nanodiscs

An important step in the production of inflammatory mediators of the leukotriene family is the Ca2+ mediated recruitment of 5 Lipoxygenase (5LO) to nuclear membranes. To study this reaction in vitro, the natural membrane mimicking environment of nanodiscs was used. Nanodiscs with 10.5 nm inner diameter were made with the lipid POPC and membrane scaffolding protein MSP1E3D1. ...