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In this paper, a novel composite heat transfer enhancement technique comprised of louvered fins (LFs) and rectangular wing vortex generators (RWVGs) is proposed to improve the LF side thermal-hydraulic performance of louvered fin and flat tube heat exchangers (LFHEs). After validation of the LF side pressure drop ΔPand heat transfer coefficient hLFof the baseline by experiments, the numerical method is applied to investigate the influential mechanisms of the RWVG parameters (the number N(7 to 15), attack angle β(30° to 90°), height HVG(0.8 mm to 2 mm) and width WVG(0.8 mm to 1.2 mm)) on the performance of the LFHE in the velocity range of 3 m/s to 10 m/s. Results show that thermal-hydraulic performance of the LFHE is significantly impacted by the RWVGs, and according to the performance evaluation criteria (PEC), the LFHE achieves its optimal thermal-hydraulic performance when N=7, β=45°, HVG=1.8 mm and WVG=1 mm. Compared to the baseline, the maximum, minimum and average increments of PEC for the optimal case are 13.85%, 4.67% and 8.39%, respectively.

Since 1992, when recombinant hepatitis B vaccine was introduced in China, government health officials have used nationally representative serological surveys to monitor progress in prevention and control of hepatitis B. In 2020, we conducted the fourth seroepidemiological survey, which for the first time included medical evaluation of the clinical status of HBsAg positive subjects over the age of 15 and their medical management. We report survey results in comparison with the three previous surveys.

Recently, it has been demonstrated that deep neural networks can significantly improve the performance of single image super-resolution (SISR). Numerous studies have concentrated on raising the quantitative quality of super-resolved (SR) images. However, these methods that target PSNR maximization usually produce blurred images at large upscaling factor. The introduction of generative adversarial networks (GANs) can mitigate this issue and show impressive results with synthetic high-frequency textures. Nevertheless, these GAN-based approaches always have a tendency to add fake textures and even artifacts to make the SR image of visually higher-resolution. In this paper, we propose a novel perceptual image super-resolution method that progressively generates visually high-quality results by constructing a stage-wise network. Specifically, the first phase concentrates on minimizing pixel-wise error, and the second stage utilizes the features extracted by the previous stage to pursue results with better structural retention. The final stage employs fine structure features distilled by the second phase to produce more realistic results. In this way, we can maintain the pixel, and structural level information in the perceptual image as much as possible. It is useful to note that the proposed method can build three types of images in a feed-forward process. Also, we explore a new generator that adopts multi-scale hierarchical features fusion. Extensive experiments on benchmark datasets show that our approach is superior to the state-of-the-art methods. Code is available at https://github.com/Zheng222/PPON. [ABSTRACT FROM AUTHOR]

Laparoscopic common bile duct exploration (LCBDE) has been recently introduced for management of CBD stone in patients with previous biliary surgery history. The aim of this study was to evaluate the safety and effectiveness of primary closure in patients with previous biliary surgery history compared to T-tube drainage. Eighty patients with previous biliary surgery history including laparoscopic cholecystectomy, open cholecystectomy, or open common bile duct exploration were enrolled in the retrospective study. The patients were divided into 2 groups according to the methods of choledochotomy closure. Group A: patients with primary closure after LCBDE (n = 51); group B: patients with T-tube drainage after LCBDE (n = 29). Group A exhibited a shorter postoperative hospital stay and lower hospitalization expenses compared to group B. There was no significant difference in conversion rate to open surgery, operating time, intraoperative blood loss, bile leakage rate, overall complication rate, and stone recurrence rate between the 2 groups. Biliary stricture was not observed in the 2 groups during the follow-up period. Primary closure following LCBDE is safe and effective for the management of CBD stones in patients with previous biliary surgery history.

Objective: This study sought to investigate the relationship between ABO blood groups and the risk of gastric cancer as well as clinical pathological parameters and prognosis.Methods: Gastric cancer patient data were collected from January 1995 to January 2012 at Jilin Cancer Hospital, and the blood group information of the blood donors at Jilin City Blood Center was recorded. The relationships between ABO blood group and both clinicopathological parameters and the risk of gastric cancer were analyzed retrospectively. The impact of ABO blood type on the 5-year survival rate of patients with gastric cancer was evaluated through outpatient and telephone interviews.Results: (1) Compared with the healthy population, the frequency distribution of gastric cancer patients with the A blood group was significantly increased (χ2= 4.708, P = 0.000), whereas the frequency distribution of gastric cancer patients with the AB blood group was significantly decreased (χ2= 9.630, P = 0.002). However, there was no significant difference in the distributions of the B blood group and O blood group (P > 0.05). (2) The risk of gastric cancer in people with the A blood group was higher, whereas the risk of gastric cancer in people with the AB blood group was lower. There was no significant difference in the risk of gastric cancer between type B and type O patients (P > 0.05). (3) The ABO blood group was not related to pathological factors, including the size of the gastric tumor or the T stage or N stage of the disease (P > 0.05). (4) Univariate analysis results showed that the degree of differentiation, tumor size, T stage, lymph node metastasis, and type O blood were factors affecting the 5-year survival rate of gastric cancer patients (P < 0.05). Multivariate analysis results showed that tumor size, T stage, lymph node metastasis, and O blood group were independent prognostic factors. The 5-year survival rate for gastric cancer was significantly better in patients with type O blood (hazard ratio = 0.97, 95% confidence interval = 1.67–3.92).Conclusion: (1) The risk of gastric cancer was higher in patients with the A blood group and lower in those with the AB blood group. (2) The ABO blood group showed no significant effect on the clinicopathological parameters of gastric cancer. (3) The O blood group may be a prognostic factor for gastric cancer patients.

We aimed to establish a discriminative gene-expression-based classifier to predict survival outcomes of T-cell lymphoblastic lymphoma (T-LBL) patients. After exploring global gene-expression profiles of progressive (n= 22) vs. progression-free (n= 28) T-LBL patients, 43 differentially expressed mRNAs were identified. Then an eleven-gene-based classifier was established using LASSO Cox regression based on NanoString quantification. In the training cohort (n= 169), high-risk patients stratified using the classifier had significantly lower progression-free survival (PFS: hazards ratio 4.123, 95% CI 2.565–6.628; p< 0.001), disease-free survival (DFS: HR 3.148, 95% CI 1.857–5.339; p< 0.001), and overall survival (OS: HR 3.790, 95% CI 2.237–6.423; p< 0.001) compared with low-risk patients. The prognostic accuracy of the classifier was validated in the internal testing (n= 84) and independent validation cohorts (n= 360). A prognostic nomogram consisting of five independent variables including the classifier, lactate dehydrogenase levels, ECOG-PS, central nervous system involvement, and NOTCH1/FBXW7status showed significantly greater prognostic accuracy than each single variable alone. The addition of a five-miRNA-based signature further enhanced the accuracy of this nomogram. Furthermore, patients with a nomogram score ≥154.2 significantly benefited from the BFM protocol. In conclusion, our nomogram comprising the 11-gene-based classifier may make contributions to individual prognosis prediction and treatment decision-making.

Non-methane short-lived climate forcer (SLCF) or near-term climate forcer (NTCF) emissions, as a significant driver of climate change, can be reduced to improve air quality. These reductions may contribute to additional warming of the climate system in the short term, thereby strongly affecting the likelihood of climate extremes. However, there has been no quantitative assessment of the impact of non-methane SLCF mitigation on compound flood–heatwave extremes (CFHEs). This study quantitatively investigates the changes in future (2031–2050 versus 1995–2014) CFHEs and the resulting population exposure in the Northern Hemisphere (NH) due to non-methane SLCF reductions. We used multi-model ensemble simulations under two future scenarios from the Aerosol and Chemistry Model Intercomparison Project (AerChemMIP) in the Coupled Model Intercomparison Project Phase 6 (CMIP6). The two future scenarios share the same greenhouse gas (GHG) emissions but have weak (Shared Socioeconomic Pathway (SSP) 3–7.0) versus strong (SSP3-7.0-lowNTCF) levels of air quality control measures. The results show that future non-methane SLCF reductions during 2031–2050 results in about a 7.3% ± 2.3% increase in grid exposure to CFHEs in the NH relative to the period 1995–2014. The frequency, intensity, and duration of CFHEs increase by varying degrees. During the period 2031–2050, the frequency of CFHEs across the NH increases by 2.9 ± 0.9 events per decade due to non-methane SLCF reductions. The increases in CFHE frequency are more pronounced in East Asia, South Asia, Siberia, and northern and eastern North America. In East and South Asia, the intensities of both heatwaves and floods corresponding to CFHEs increase markedly, where heatwave magnitude (HWM) increases by 0.3 ± 0.2 in East Asia and weighted average precipitation (WAP) increases by 18.3% ± 15.3% and 12.0% ± 4.5% in East Asia and South Asia, respectively. In other regions, rising temperatures dominate the increase in CFHEs. With regard to the duration of CFHEs, future reductions in non-methane SLCFs increases the duration of CFHEs in the NH by 0.3 ± 0.1 d. Regionally, the sensitivity of CFHE frequency to global warming caused by non-methane SLCF mitigation is 1.2–1.9 times higher than that caused by GHG forcing. Non-methane SLCFs results in NH-averaged increases in population exposure to CFHEs of (5.0 ± 2.0) × 105person event in the period 2031–2050. This study emphasizes the importance of considering the impacts of cleaner air in future responses to compound extremes and corresponding societal planning.

We systematically investigate the ground-state and elementary excitations of a Bose-Einstein condensate within a synthetic vector potential, which is induced by the many-body effects and atom-light coupling. For a sufficiently strong spin-dependent interaction, we find the condensate undergoes a Stoner-type ferromagnetic transition through the self-consistent coupling with the vector potential. For a weak interaction, the critical velocity of a supercurrent is anisotropic due to the density fluctuations affecting the gauge field. We further analytically demonstrate the topological ground state with a coreless vortex ring in a three-dimensional (3D) harmonic trap and a coreless vortex-antivortex pair in a two-dimensional (2D) trap. The circulating persistent current is measurable in the time-of-flight experiment or in the dipolar oscillation through the violation of the Kohn theorem. [ABSTRACT FROM AUTHOR]

We investigate the nonadiabatic dynamics of a driven spin-orbit-coupled Bose-Einstein condensate in both weak and strong driven force. It is shown that the standard Landau-Zener (LZ) tunneling fails in the regime of weak driven force and/or strong spin-orbital coupling, where the full nonadiabatic dynamics requires a new mechanism through multichannel effects. Beyond the semiclassical approach, our numerical and analytical results show an oscillating power-law decay in the quantum limit, different from the exponential decay in the semiclassical limit of the LZ effect. Furthermore, the condensate density profile is found to be dynamically fragmented by the multichannel effects and enhanced by interaction effects. Our work therefore provides a complete picture to understand the nonadiabatic dynamics of a spin-orbit coupled condensate, including various ranges of driven force and interaction effects through multichannel interference. The experimental indication of these nonadiabatic dynamics is also discussed. [ABSTRACT FROM AUTHOR]

Eight new oleanane-type triterpenoid glycosides, gordonosides I−P (1−8), and two new phenolic glycosides (9and 10) were isolated from the stems of Gordonia chrysandra. Their structures were elucidated by spectroscopic and chemical methods. In an in vitro bioassay, compound 1showed a strong inhibitory effect on nitric oxide production in LPS-activated macrophages with an IC50value of 0.14 μM.

Opposite anthropogenic aerosol emission trends in Asia can lead to different responses of the climate. Here, we examined the responses of the East Asian summer monsoon (EASM) to changes in Asian anthropogenic aerosol emissions during 2006–2014 using a global aerosol/atmospheric chemistry–climate coupled model (BCC_AGCM2.0_CUACE/Aero) with two sets of emission inventories: the Community Emissions Data System (CEDS) inventory adopted by the Coupled Model Intercomparison Project Phase 6 (CMIP6) and the inventory developed at Peking University (PKU). The changes in Asian anthropogenic aerosol emissions during 2006–2014 between the two inventories were remarkably different, particularly in eastern China where completely opposite trends were observed (i.e., increase in the CEDS inventory, but significant reduction in the PKU inventory). The perturbation simulations with the Asian anthropogenic aerosol forcing from the two inventories showed opposite changes in aerosol optical depth, aerosol effective radiative forcing, cloud liquid water path, and total cloud cover in eastern China. The simulated ‘dipole-type’ changes (i.e., increase in India but decrease in China) in Asian aerosols and the resulting changes in local radiation budget under the PKU inventory were consistent with the corresponding observations. The summer surface temperatures over eastern China decreased by 0–0.4 K because of the Asian anthropogenic aerosol forcing under the CEDS inventory, while they increased by 0.1–0.8 K under the PKU inventory. The weakening of the EASM index caused by the Asian aerosol forcing under the PKU inventory was twofold greater than that under the CEDS inventory (−0.4 vs. −0.2). The Asian ‘dipole-type’ aerosol forcing contributed to the observed summer ‘southern drought and northern flood’ phenomenon in eastern China during 2006–2014. The slow ocean-mediated response to the regional ‘dipole-type’ aerosol forcing dominated the weakening of the EASM circulation and the precipitation changes in eastern China in the total response. This study further confirms that the biases in anthropogenic aerosol emissions over Asia can affect the CMIP6-based regional climate attribution.

Abstract Breast cancer has been the most common malignant tumor among women in many large cities of China. The aim of this study was to clarify the prognostic significance of serum anti-p53 antibodies (p53 Abs) in Chinese patients of breast cancer. One hundred and forty-four patients with invasive ductal carcinoma of breast were involved in this study. The expressions of ER, PR, c-erbB-2 and p53 were immunostained in tumor tissues and serum p53 Abs were assayed using ELISA method. The correlations between p53 Abs and other clinical and biological markers were analyzed. Among 144 patients, 31 (21.5%) had positive p53 Abs, which was associated with several poor prognostic parameters including higher clinical stage (p = 0.0233), lymph nodes metastasis (p = 0.0033), negative ER expression (p = 0.0250) and positive c-erbB-2 status (p = 0.0227). There was also a strong correlation between p53 Abs and tumor p53 positivity (p < 0.0001). These results indicated that the presence of p53 Abs is probably triggered by the accumulation of tumor p53 protein, and it could be a useful marker to complement routine prognostic factors in breast cancer patients.

A comprehensive study of the structural and spectroscopic properties of two‐, three‐, and four‐coordinate copper(i) complexes with aliphatic phosphine ligands is presented. All complexes described in this work are characterized by Xray crystallography. The intramolecular Cu⋅⋅⋅Cu separations in [Cu2(dcpm)2]X2, [Cu2(dcpm)2(CH3CN)2]X2, and [Cu2(dmpm)3](ClO4)2(dcpm=bis(dicyclohexylphosphino)methane; dmpm=bis(dimethylphosphino)methane; X=ClO4−and PF6−) are in the range 2.639(2)–3.021(2) Å. The anion⋅⋅⋅CuIinteraction is weak, as evidenced by the nearest O⋅⋅⋅Cu separation of 2.558(6) Å in [Cu2(dcpm)2](ClO4)2and the closest Cu⋅⋅⋅F separation of 2.79(1) Å in [Cu2(dcpm)2](PF6)2. The absorption bands of [Cu2(dcpm)2]X2and [Cu2(dcpm)2(CH3CN)2]X2(X=ClO4−and PF6−) at λmax307–311 nm in CH2Cl2are assigned as 1[3dσ* → 4pσ] transitions; this has been confirmed by resonance Raman spectroscopy. The triplet emissions in the visible region from these complexes exhibit long lifetimes and are sensitive to the environment. The lowest emissive excited state is tentatively ascribed as 3[(dx2−y2, dxy)(pz)] in nature. For [Cu2(dcpm)2]2+salts in CH3CN, the emissive species is postulated to be [Cu2(dcpm)2(CH3CN)n]2+(n≥3). Efficient photocatalytic reduction of MV2+(4,4′‐dimethyl‐2,2′‐bipyridinium) to MV+in alcoholic solutions by using [Cu2(dcpm)2](PF6)2or [Cu2(dppm)2(CH3CN)4](ClO4)2(dppm=bis(diphenylphosphino)methane) as a catalyst has been observed. The addition of CH3CN or use of [Cu2(dmpm)3](ClO4)2as a catalyst did not allow photocatalytic reduction processes to occur.

A comprehensive study of the structural and spectroscopic properties of two-, three-, and four-coordinate copper(i) complexes with aliphatic phosphine ligands is presented. All complexes described in this work are characterized by Xray crystallography. The intramolecular Cu···Cu separations in [Cu2(dcpm)2]X2, [Cu2(dcpm)2(CH3CN)2]X2, and [Cu2(dmpm)3](ClO4)2 (dcpm=bis(dicyclohexylphosphino)methane; dmpm=bis(dimethylphosphino)methane; X=ClO4⁻ and PF6⁻) are in the range 2.639(2)–3.021(2) Å. The anion···Cu^I interaction is weak, as evidenced by the nearest O···Cu separation of 2.558(6) Å in [Cu2(dcpm)2](ClO4)2 and the closest Cu···F separation of 2.79(1) Å in [Cu2(dcpm)2](PF6)2. The absorption bands of [Cu2(dcpm)2]X2 and [Cu2(dcpm)2(CH3CN)2]X2 (X=ClO4⁻ and PF6⁻) at λmax 307–311 nm in CH2Cl2 are assigned as ¹[3dσ* → 4pσ] transitions; this has been confirmed by resonance Raman spectroscopy. The triplet emissions in the visible region from these complexes exhibit long lifetimes and are sensitive to the environment. The lowest emissive excited state is tentatively ascribed as ³[(dx²−y², dxy)(pz)] in nature. For [Cu2(dcpm)2]²⁺ salts in CH3CN, the emissive species is postulated to be [Cu2(dcpm)2(CH3CN)n]²⁺ (n≥3). Efficient photocatalytic reduction of MV²⁺ (4,4'-dimethyl-2,2'-bipyridinium) to MV⁺ in alcoholic solutions by using [Cu2(dcpm)2](PF6)2 or [Cu2(dppm)2(CH3CN)4](ClO4)2 (dppm=bis(diphenylphosphino)methane) as a catalyst has been observed. The addition of CH3CN or use of [Cu2(dmpm)3](ClO4)2 as a catalyst did not allow photocatalytic reduction processes to occur.

XK469 (NSC 697887; (+/-)-2-[4-(7-chloro-2-quinoxaliny)oxy]phenoxy propionic acid), an analog of the herbicide Assure, which possesses antitumor activity, especially against murine solid tumors and human xenografts, has recently been found to be the first topoisomerase IIbeta poison. Both R(+) and S(-) isomers are cytotoxic, although the R-isomer is more potent. Using a chiral high-performance liquid chromatography assay, pharmacokinetics of R(+)-, S(-)-, and (+/-)-XK469 in Fischer-344 rats were investigated following their separate i.v. administrations. S(-)-XK469 was found to be predominantly converted to the R-isomer in circulation when the S-isomer was administered either alone or as a racemic mixture. No trace of the S-isomer was found in circulation or in urine or feces, following the R-isomer administration, up to 72 h. In the rat, the plasma concentration-time profiles for both isomers follow a two-compartment pharmacokinetics with the mean t(1/2beta) for the R-isomer of 24.7 h being significantly longer than 4.2 h, the mean t(1/2beta) for the S-isomer. The mean total clearance of the S-isomer was over 200-fold more rapid than that of the R-isomer, and the major clearance route of the S-enantiomer was inversion to its antipode, as estimated by the fractional formation clearance of R(+)-XK469 of 0.93. Protein binding for both enantiomers was in the range of 95 to 98%. Urinary and fecal elimination in 72 h as the intact drug were 7 to 10% and 8% of the administered dose, respectively, either administered as the individual enantiomers or as a racemate. Cumulative biliary elimination in 7 h was about 3% of the dose. No evidence of enantiomeric interaction at the pharmacokinetic level was detected.

In this study, we investigate the spatially nonuniform-temperature effects on the QCD chiral phase transition in the heavy-ion collisions. Since the QCD effective theory and the Ising model belong to the same universality class, we start our discussion by mimicking the QCD effective potential with an Ising-like effective potential. In contrast to the dynamical slowing down effects which delays the phase transition from quark-gluon-plasma to hadron gas, the spatially nonuniform-temperature effects show a possibility to lift the phase transition temperature. Besides, both the fluctuations and the correlation length are enhanced in the phase transition region. Furthermore, the critical phenomena is strongly suppressed like as the critical slowing down effects. The underlying mechanism is the nonzero-momentum mode fluctuations of the order parameter induced by the nonuniform temperature. Our study provides a method to evaluate the nonuniform-temperature effects, and illustrate its potential influence on analyzing the QCD phase transition signals at RHIC. [ABSTRACT FROM AUTHOR]

AbstractCrSi2nanocrystals, prepared by the method of direct arc plasma, were encapsulated with the styrene/acrylonitrile copolymer. X-ray powder diffraction (XRD) pattern and Raman spectra of the composite proved the successful encapsulation. Transmission electron microscopy (TEM) image showed that the CrSi2nanocrystals were dispersed in copolymer matrix homogeneously.

Nanoparticulate TiO2–stearate Langmuir–Blodgett-type monolayers and multilayers were directly obtained by using TiO2hydrosol as the subphase. The surface pressure-versus-surface area isotherms showed that the monolayer could be compressed to a mean molecular area of 0.25 nm2. The monolayer was transferred onto a CaF2or Si substrate at a dipping speed of 18 cm/min and surface pressure of 25 mN/m. It exhibited Y-type multilayer films over the range investigated (1–30 layers) with a transfer ratio of 1.0 ± 0.1. FTIR transmission spectra and linear infrared dichroic spectra provided evidence of the formation of a stable organic/inorganic alternating multilayer with nanoparticulate TiO2between the organic monolayers. There is only slight absorption in the range of the C;equals;O stretching vibration band of the carboxylic group with the 3- and 6-nm TiO2nanoparticles. This means that TiO2particles are packed closely; i.e., the surface coverage is very high. A possible structure consists of layers of nanoparticles in close-packed form with two stearate ion layers inbetween. But it can be seen that there are some carboxylic groups (1700 cm−1) not connected to the 20-nm TiO2nanoparticle. Electron microscopic (TEM) images of TiO2–stearate monolayers show that high-coverage monolayers were obtained when the surface pressure increased to 25 mN/m and the dipping speed to 18 cm/min.

Summary: Using biplane transesophageal echocardiography and the concept of three dimensional transthoracic echocardiography, we performed three dimensional reconstruction of transesophageal images of various clinicopathologic cases, including atrial septal defect, mitral stenosis, mitral valve prolapse and pulmonary stenosis. The hardware equipments and image processing flow chart of three dimensional reconstruction of transesophageal echocardiographic images are described. Our present study indicates that three dimensional reconstruction of transesophageal echocardiographic images could display multi-regional three dimensional structures of heart and great vessels, including superior vena cava, ascending aorta, right ventricular outflow tract, pulmonary artery and left heart, with clear, visual and stereoscopic imaging. The regional structures could be displayed at different levels of stereo-anatomic-secr tions and in different orientations of rotating stereo-images, which could provide accurate three dimensional anatomical information for cardiac stereo-morphological study and definition of spatial location and size of cardiac abnormalities.

Summary: Circular distribution was used for statistical analysis of the data collected through a three-year period in county X, Hubei Province, to find out the seasonal characteristics of epidemic cerebrospinal meningitis, epidemic encephalitis B and malaria. The method provided a summary in the detection of the epidemic peak of one or several diseases in different years and was also useful in determining the epidemic time focus of a disease. Therefore, it may serve as a scientific basis for the prevention of certain diseases and an accurate means for the statistical management of the data obtained in seasonal epidemic diseases.

A new benzophenone glycoside, 2,6-dihydroxy-4-O-β-d-glucopyranosylbenzophenone (1), was isolated from the leaves of guajavaL. Its structure was elucidated by spectral and chemical methods. 1showed significant activities to secretion of NO in mouse peritoneal macrophages in 10μmol/L.

A new tetrahydrophenanthrene named henryin A (1) was isolated from the leaves of Chloranthus henryi. Its structure was determined to be (S)-4,6,9-trimethyl-5,6,7,8-tetrahydrophenanthrene-1,2-diol on the basis of IR, MS, 1D and 2D NMR spectral.

We present the results of a solid self-Raman laser based on a Nd:KGW crystal that is transversely pumped by laser diode bars. A beam of an eye-safe laser with a 31.8 mJ output energy and a 2.0 ns pulse width was obtained by applying a special s-polarized reflective resonator configuration in which the length of the Raman resonator was shorter than that of the fundamental radiation resonator. The eye-safe laser has the highest output energy and the shortest pulse width among the Nd:KGW lasers ever reported.

Using the model of acute myocardial ischemia in rats formed by ligation of the descending anterior branch of the left coronary artery, this study showed some effects of compound Salviae miltiorrhizae injection (CSMI) on metabolism of phosphoinositide in myocardial ischemia. The results of the experiment showed that after 10 minutes of acute ischemia, the function of myocardial messangers of phosphoinositide increased, and the levels of phosphatidylinositol-4, 5-biphosphate (PIP2) and inositol-1, 4, 5-trisphosphate (IP3) were obviously higher than those of the non-ischemia control groups (P<0.01, n=7). CSMI (2 g/kg body weight) could markedly inhibit myocardial PIP2and IP3, whose levels became lower than those of the ischemia control groups (P<0.01, n=7).

We investigate the magnetic phases of a bilayer system of ultracold bosons in the presence of Raman-induced spin-orbit (SO) coupling and laser-assisted interlayer tunneling. We consider this bilayer system in the Mott-insulating regime where on-site two-body interactions exceed all the tunneling terms. In such a system there exists a rich set of spin textures including hetero-ferromagnetic, heterochiral magnetic, and chiral magnetic phases with interlayer antiferromagnetic. In particular, the heterochiral magnetic phase induced by SO coupling occurs extremely rarely in solid-state materials. We theoretically analyze the contribution of interlayer ferromagnetic interaction to the formation of these magnetic phases, including interactions that arise from laser-assisted tunneling, stagger "magnetic field," and antisymmetric exchange, i.e., Dzyaloshinskii-Moriya interactions. Finally, we detail an experimental setup that produces the desired interactions in a system of cold alkali-metal atoms. [ABSTRACT FROM AUTHOR]

Tridentate cyclometalated platinum(ii) complexes bearing σ-alkynyl ligands exhibit tunable photoluminescence and enhanced stability during vacuum deposition; OLEDs based on these materials display orange to red electrophosphorescence with low turn-on voltages (~4 V), maximum luminance approaching 10000 cd m−2 and efficiency up to 4.2 cd A−1.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

We present a complete list of the dimension-eight operator basis in the standard model effective field theory using group theoretic techniques in a systematic and automated way. We adopt a new form of operators in terms of the irreducible representations of the Lorentz group and identify the Lorentz structures as states in a SU(N) group. In this way, redundancy from equations of motion is absent and that from integration by part is treated using the fact that the independent Lorentz basis forms an invariant subspace of the SU(N) group. We also decompose operators into the ones with definite permutation symmetries among flavor indices to deal with subtlety from repeated fields. For the first time to our knowledge, we provide the explicit form of independent flavor-specified operators in a systematic way. Our algorithm can easily be applied to higher-dimensional standard model effective field theory and other effective field theories, making these studies more approachable. [ABSTRACT FROM AUTHOR]

We present a complete and independent list of the dimension-nine operator basis in the Standard Model effective field theory by an automatic algorithm based on the amplitude-operator correspondence. A complete basis (Y-basis) is first constructed by enumerating the Young tableau of an auxiliary SU(N) group and the gauge groups, with the equation-of-motion and integration-by-part redundancies all removed. In the presence of repeated fields, another basis (P-basis) with explicit flavor symmetries among them is derived from the Y-basis, which further induces a basis of independent monomial operators through a systematic process called desymmetrization. Our form of operators has advantages over the traditional way of presenting operators constrained by flavor relations, in the simplicity of both eliminating flavor redundancies and identifying independent flavor-specified operators. We list the 90456 (560) operators for three (one) generations of fermions, all of which violate baryon number or lepton number conservation; among them we find new violation patterns as ΔB=2 and ΔL=3, which only appear at the dimensions d≥9. [ABSTRACT FROM AUTHOR]