Search

3d–4d perovskite oxide SrRuO3/NdNiO3 (SRO/NNO) bilayers were epitaxially deposited on (001)- and (011)- LaAlO3 (LAO) substrates by polymer-assisted deposition (PAD), respectively, and the electrical and magnetic properties have been investigated. It is found that the epitaxial growth tends to be 2D step flow or layer by layer for NdNiO3 films, but 3D island mode for SrRuO3 films, under PAD. The growth in 3D island mode is beneficial to the lattice relaxation. An abnormal behavior, i.e., the transport properties are mainly dominated by NNO layer, rather than the top SRO layer, is found in SRO/NNO bilayers. The interfacial effects, including the interlayer exchange coupling and the interfacial Ni (3d)-O (2p)-Ru (4d) orbital hybridization/reconstruction, are confirmed in SRO/NNO bilayers. Meanwhile, it is found that the strain-induced structural adjustment of the sole NNO layer directly affects the interfacial structure, including Ni–O bond and Ni–O-Ru bond angle, and the magnetic pinning function on the SRO layer. It is suggested that due to the special island-shape SRO layer, the competition and combination of the strain effect on the NNO layer and the interfacial effect in SRO/NNO bilayers dominate the interfacial properties with substrate-orientation dependence. The physical properties of the bilayers can be controlled by the sole single-layer structure through the substrate-induced strain and interface engineering, respectively. [ABSTRACT FROM AUTHOR]

This study aimed to investigate the effects of Xinnao shutong capsules (XSC) on the recovery of cerebral circulation and neurological and motor functions following cerebral infarction. Eighty patients admitted to the neurology department of our hospital were enrolled and randomly divided into control and intervention groups (n = 40 for each group). Patients in the control group received comprehensive treatment, including Western medicine and motor rehabilitation, while the intervention group was additionally treated with XSC. After 4 weeks, cerebral circulation, National Institutes of Health Stroke Scale (NIHSS) scores, and Functional Independence Measure (FIM) scores were measured to evaluate neurological and motor function. After 4 weeks of treatment, the effective rate of the intervention and control groups was 82.5 and 67.5%, respectively, showing significant differences between the two groups (P < 0.05); Vmin and Qmin were increased and R was decreased in the cerebral circulation of the intervention group, and were significantly different from those of the control group (P < 0.05); the NIHSS score decreased and the FIM score increased in the two groups. Hypersensitive C-reactive protein (hs-CRP), brain-derived neurotrophic factor (BDNF), and angiopoietin-2 (Ang-2) levels were improved in both groups. The intervention group showed lower NIHSS scores and higher FIM scores than the control group (P < 0.05); hs-CRP was lower and BDNF levels were higher in the intervention group than in the control group (P < 0.05). Ang-2 levels did not differ significantly between the two groups (P > 0.05); malondialdehyde and matrix metalloproteinase-9 levels were lower and superoxide dismutase levels were higher in the intervention group than in the control group (P < 0.05). XSC significantly improved patients' cerebral circulation and motor and neurological function, effectively reduced oxidative stress, and improved clinical efficacy. [ABSTRACT FROM AUTHOR]

Thermal runaway is the most important safety problem of the lithium-ion battery. A thermal model–combined four side reactions is established to simulate suppression of the thermal runaway of a lithium-ion battery, and the effect of suppression starting time is analyzed to further reveal the thermal runaway suppression mechanism. The results show that thermal runaway is triggered by the heat generation of negative material reaction when it is heated with 473.15 K, and heat dissipation in the bottom part of negative electrode material at 293.15 K can effectively inhibit the occurrence of thermal runaway before solid electrolyte interface (SEI) decomposition reaction starts. In addition, the suppression of runaway battery heat is to suppress the negative electrode material reaction actually, and when the heat is dissipated at 293.15 K, it could be conducted before the SEI decomposition reaction starts, which has nothing to do with the advance time. [ABSTRACT FROM AUTHOR]

Let B (H) be the algebra of all bounded linear operators on a separable complex Hilbert space H . We introduce the J-decomposition property for projections in B (H) , and prove that the projection E in B (H) has J-decomposition property with respect to a particular space decomposition, which is related to Hal-mos' two projections theory. Using this, we characterize symmetries J such that the projection E is a J-projection (or J-positive projection, or J-negative projection). Also, we give the explicit representations of the maximum and the minimum of symmetries J such that the projection E is J-positive (or J-negative). [ABSTRACT FROM AUTHOR]

The increasing discharge of wastewater with chromium(VI) plays adverse impacts on the environment in recent years. This study purposes to investigate the adsorption efficiency and removal mechanism of chromium(VI) via a purified indigenous bacteria (Leifsonia sp.). The effect of varying pH, initial chromium(VI) concentration, dosage of dry biosorbent, contact time and temperature on the adsorption efficiency of chromium(VI) was studied via single-factor experiment. Our results demonstrate that the strain has high efficiency of adsorbing chromium(VI) from aqueous solution. The maximum removal rate of chromium(VI) was 95.4% when pH was 2 (range 1.5–9.0), contact time was 4 h, the initial chromium(VI) concentration was 10 mg/L and the temperature was 30 °C (10–50 °C). Freundlich isotherms fit the adsorption process well, and the adsorption kinetics is consistent with the pseudo-secondary kinetic model. Furthermore, the adsorption mechanism was elucidated via FTIR and XPS, indicating that chromium precipitates on the biosorbent surfaces are a mixture of chromium(VI) and chromium(III). It is implied that physisorption and chemisorption proceed at the same time during the chromium(VI) adsorption process. These findings show that Leifsonia sp. as a biosorbent displays excellent adsorption efficiency, having the potential to remove chromium(VI) from aqueous solutions. [ABSTRACT FROM AUTHOR]

Papillomaviruses (PVs) are simple double-strand DNA viruses whose virion shells are T = 7 icosahedrons and composed of major capsid protein L1 and minor capsid protein L2.L1 alone or together with L2 can self-assemble into virus-like particles (VLPs) when expressed in eukaryotic or prokaryotic expression systems. Although the VLPs lack the virus genome DNA, their morphological and immunological characteristics are very similar to those of nature papillomaviruses. PV VLP vaccination can induce high titers of neutralizing antibodies and can effectively protect animals or humans from PV infection. Moreover, PV VLPs have been good candidates for vehicles to deliver epitopes or genes to target cells. They are widely used in the fields of vaccine development, neutralizing antibody detection, basic virologic research on papillomaviruses, and human papillomavirus (HPV) screening. Besides the structural biology and immunological basis for PV VLPs used as vehicles to deliver epitopes or genes, this review details the latest findings on chimeric papillomavirus VLPs and papillomavirus pseudoviruses, which are two important forms of PV VLPs used to transfer epitopes or genes. [ABSTRACT FROM AUTHOR]

Three-gluon to three-gluon scatterings lead to rapid thermalization of gluon matter created in central Au-Au collisions at RHIC energies. Thermalization of quark matter is studied from three-quark to three-quark scatterings. [ABSTRACT FROM AUTHOR]

The present study was conducted to establish a mesenchymal stem cells (MSCs) line from porcine fetal bone marrow and compare the efficiency of nuclear transfer using porcine fetal mesenchymal stem cells (pFMSCs), porcine fetal fibroblasts (pFF) and newborn porcine ear skin fibroblasts (pESF) three types donor cell respectively, as well as initially explore the possibility of isolation and culture of ESCs-like from cloned blastocysts. A pFMSCs line was successfully established and expanded up to at least passage 13, which still presented a stable fibroblastlike morphology. Flow cytometry analysis confirmed that pFMSCs expressed CD44, CD105 and CD117 rather than CD45, CD11a and CD14. pFF0306, pESF109 and pFMSCs0310 were used as donor cells to perform SCNT respectively, and there were no significant differences in fusion rate, cleavage rate and blastocysts formation rate (P > 0.05). PZM-3, compared with NCSU-23, can increase the cleavage rate (61.4% vs 57.6%) and blastocyst rate (15.9% vs 9.0%) of porcine SCNT embryo, but there were no significant differences in statistics. Insulin and EGF added to the PZM-3 significantly increased the total cell number of blastocysts (P < 0.05). Cloned embryos were transferred to four recipients, two of these became pregnant, and one gave birth to a cloned dead fetuses derived from pFF0306 donor cells at pregnant day 121. Sequence analysis demonstrated the DNA sequence of the cloned fetus was identical to that of the donor cells and not genetically related to the recipient gilt. ESCs-like colonies were successfully isolated from cloned blastocysts and these cells showed AP activity and could be maintained for up to 1 passage. The results of the present study indicate that reconstructed embryos have the ability to maintain pregnancy to 51 day in vivo and ESCs-like can be derived from cloned blastocysts in vitro by transferring the pFMSCs into enucleated oocytes. [ABSTRACT FROM AUTHOR]