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With the advent of the era of short video, people can receive more information easy to be read and understood in a short time. Meteorological communicators should seize this opportunity, dig out characteristics and make innovations. In this paper, the first award-winning excellent short weather video in Hubei Province is taken as an example, to analyze some characteristics of short weather video, and some innovative development strategies are proposed. [ABSTRACT FROM AUTHOR]

Recovering Y and Eu from waste phosphors using chlorination roasting followed by a water leaching process was investigated in this study. Firstly, by chlorination roasting and water leaching, Y and Eu elements present in waste phosphors were efficiently extracted into a leach solution. Secondly, the majority of the impurities in the solution can be removed by adjusting the pH to 4.5 using a Na2S and NH3·H2O solution. Thirdly, the rare earths can be precipitated afterwards by adding a H2C2O4 solution and adjusting the pH to 2.0. Then rare earth oxides (REOs) can be obtained after calcining at 800 °C for 1 h. The characterization study of the waste phosphors and the rare earth oxide products was performed by XRD, XRF, and SEM-EDS analysis to determine the phase and morphological features. Influences of the factors, such as roasting temperatures and time, the addition of ammonium chloride on the roasting of waste phosphors, as well as the pH and the amount of oxalates on the precipitation of Y and Eu, were investigated. The maximum grade (99.84%) of mixed rare earth oxides and recovery rate (87.35%) of Y and Eu were obtained at the optimized conditions. [ABSTRACT FROM AUTHOR]

Background: Colloid adenocarcinoma of the lung is a rare subtype of variants of invasive adenocarcinomas. We report the appearance of this unusual entity on 18F-fluorodeoxyglucose positron emission tomography/computed tomography.Case Presentation: A 60-year-old man of Chinese Han nationality coughed with a little white sputum for 1 month. Chest computed tomography showed multiple bilateral subpleural nodules and plaques accompanied by air bronchograms, which were most concentrated in the lower lobe of his right lung. Positron emission tomography indicated increased radioactivity uptake with a maximum standardized uptake value of 3.5. Positron emission tomography/computed tomography showed a soft tissue density lesion in his left adrenal gland with a maximum standardized uptake value of 4.1. The positron emission tomography/computed tomography appearance suggested a primary colloid adenocarcinoma in the lower lobe of his right lung accompanied by intrapulmonary and left adrenal gland metastases. The diagnostic rate of colloid adenocarcinoma can be increased by combining the anatomic and metabolic information of lesions.Conclusions: The advantage of positron emission tomography/computed tomography in the diagnosis of colloid adenocarcinoma, as with other cancers, is the ability to locate extrapulmonary disease, facilitating clinical staging. [ABSTRACT FROM AUTHOR]

Recent experimental results showed that the Tg of cured resin scarcely decreased and the impact strength of resins increased by over 50% when a tetrafunctional epoxy named N,N,N',N'-tetraglycidyl-4,4'-diaminodiphenyl ether (TGDDE) was introduced to an appropriate flexible chain from a dimer fatty acid (DFA). In order to understand the reason for this phenomenon, the modification and the chemical structure of the prepolymer together with the curing reaction and the viscoelasticity of the cured resins were studied in detail in the present work. The results indicated that the modification would help the prepolymer improve its molecular mobility. As a result, the resins could be further cured, resulting in the cross-linking density increasing. This is because the curing efficiency was increased, but the tetrafunctional epoxy was not cured completely due to its large steric hindrance. Moreover, the flexibility of some parts of the networks was improved, which was beneficial for the toughness of the cured resins. Therefore, the toughness of the tetrafunctional resin was improved with little influence on the thermal properties when the epoxies were modified with an appropriate content of DFA. [ABSTRACT FROM AUTHOR]

Currently, there are no FDA approved medications for treatment of cocaine addiction underscoring the dire need to develop such a product. There is an accumulating body of evidence that l-tetrahydropalmatine (l-THP), a non-selective dopamine antagonist, can be used for the treatment of cocaine addiction. Indeed, the FDA recently approved its usage in a Phase I study in cocaine abusers and it was indispensable to develop a simple and sensitive method for the simultaneous determination of l-THP and cocaine in human plasma. We developed a UPLC-FLD method for quantitation of these molecules using an ACQUITY BEH C18 column (2.1mm×50mm, 1.7µm) and a mobile phase that consisted of 10mM ammonium phosphate (pH=4.75), methanol, and acetonitrile (v:v:v, 78:16:6). Venlafaxine was used as the internal standard while hexane was used for the liquid-liquid extraction. The flow rate was 0.4mL/min with fluorescence detection using an excitation wavelength of 230nm and emission detection wavelength of 315nm. This method was selective, linear and sensitive with a lower limit of quantification of 2.5ng/mL for both cocaine and l-THP. The intra-day precision of cocaine and l-THP was <9.50% while the accuracy was <4.29%. The inter-day precision of cocaine and l-THP was <9.14%, and the accuracy was <12.49%. The recovery for cocaine and l-THP ranged from 43.95 to 50.02% and 54.65 to 58.31%, respectively. In comparison to forty reported cocaine quantitation methods this method is simple, sensitive and cost-effective and can be used for simultaneous quantitation of l-THP and cocaine. This method meets the FDA guidelines and can be used in current and future clinical studies. [ABSTRACT FROM AUTHOR]

In order to investigate the relationship between the chemical structure of multifunctional epoxy resins and their properties, two tetrafunctional epoxies with different aromatic rings content in the molecular main chain, N,N,N',N'-tetraglycidyl-4,4'-diaminodiphenyl ether (4,4'-TGDDE) and N,N,N',N'-tetraglycidyl-2,2-bis[4-(4-aminophenoxy)phenyl]propane (TGBAPP), were cured with 4,4'-diaminodiphenyl ether (4,4'-DDE) and 2,2-bis[4-(4-aminophenoxy)phenyl]propane (BAPP), respectively. Then four amine curing systems (TGBAPP/ BAPP, TGBAPP/4,4'-DDE, 4,4'-TGDDE/BAPPand 4,4'-TGDDE/4,4'-DDE) were obtained. Additionally, the 4,4'-TGDDEand another TGDDE with m-glycidyl amino, named N,N,N',N' -tetraglycidyl-4,4'-diaminodiphenyl ether (3,4'-TGDDE) were cured with methyl nadic anhydride (MNA). Then the anhydride curing systems (4,4'-TGDDE/MNA and 3,4'-TGDDE/MNA) were prepared. The curing kinetics and thermal properties of these systems were studied in detail. The results indicated that the anhydride curing systems exhibited higher curing reactivity than the amine curing systems, and the resins cured with the anhydride showed better thermal properties. Moreover, introducing more aromatic rings into the backbone would decrease the curing reactivity but enhance the thermal property of the multifunctional epoxy resins. And the tetrafunctional epoxy with p-glycidy amino groups had higher curing reactivity than the epoxy with p-glycidy amino groups, and the thermal property of the front epoxy was better. [ABSTRACT FROM AUTHOR]

Objective: The purpose of the study was to investigate the effect of early ambulation after cardiac catheterization (CC) on patients' back pain, puncture site pain, vascular complications, urinary discomfort, general well-being perception and satisfaction level. Methods: This study was a randomized single-blinded controlled trial. Overall, 137 participants were randomly assigned to experimental (63 participants) or control (74 participants) group according to a computer generated random list. Early ambulation (ambulate at 4 hours post-CC) and routine post-procedure care of 12 to 24 hours were used in the experimental and control groups respectively. Independent t-test, Chi-square test, multiple logistic regression and generalized estimation equation model were applied to compare various outcomes between experimental and control groups. Results: Only one patient in the control group experienced puncture site bleeding after CC. Ambulation at 4 hours after CC significantly reduced patients' back pain 8 hours after they returned to the unit (OR=0.19, 95% CI: 0.08-0.45, p<0.001) and in the next morning (OR=0.36, 95% CI: 0.15-0.87, p=0.023), decrease urinary discomfort (OR=0.35, 95% CI: 0.14-0.90, p=0.03 for "very or unbearable urination discomfort" and OR=0.22, 95% CI: 0.06-0.74, p=0.015 for "much difficulty or unable to urinate at all"), and increase general well- being (p=0.005 for vitality subscale and p=0.014 for the total general well-being). However, it made no significant differences on puncture site pain as well as the satisfaction level of patients. Conclusion: The study enhanced health providers' understanding about the effects of early ambulation on patient outcomes. Nurses may provide more individualized and appropriate care to post-CC patients in a more competent and cost-effective way. [ABSTRACT FROM AUTHOR]

Aim: To identify the learning needs of patients with heart failure (HF) in China and to examine the relationships between learning needs and patients' characteristics. Background: Little information on the learning needs of patients with HF in China is known. Besides, it is important to identify the potential characteristics that may influence patients' perceived learning needs. Methods: This cross-sectional questionnaire survey was conducted in three university affiliated hospitals in Xi'an, Mainland China. A total of 347 HF patients selected by convenience sampling were investigated using the Chinese version of the HF learning needs inventory. Descriptive statistics, independent t-test, Pearson correlation, and one-way analysis of variance were used for data analysis. Results: The mean scores rated by Chinese patients with HF were lower than the corresponding scores rated by patients of Western countries. Information on risk factors, prognosis, general HF information and medications were identified as the most important topics while lifestyle modification and psychological factors were regarded as the least important ones. Age negatively correlated with the learning needs on activity (r = -0.125) and prognosis information (r = -0.141). Educational level was significantly related to the learning needs about risk factors. Conclusion: Patients with HF in China considered most of the topics important for them to learn. Age and educational level were related with the learning needs on only three topics including activity, prognosis information and risk factors. Relevance to clinical practice: The study findings may be used by health professionals to develop tailored educational programme for patients with HF in China. [ABSTRACT FROM AUTHOR]

It is crucial for cell physiology to keep the homeostasis of pH, and it is highly demanded yet challenging to develop luminescence resonance energy transfer (LRET)-based near-infrared (NIR) ratiometric luminescent sensor for the detection of pH fluctuation with NIR excitation. As promising energy donors for LRET, upconversion nanoparticles (UCNPs) have been widely used to fabricate nanosensors, but the relatively low LRET efficiency limits their application in bioassay. To improve the LRET efficiency, core/shell/shell structured ß-NaGdF[sub 4]@NaYF[sub 4]:Yb,Tm@NaYF[sub 4] UCNPs were prepared and decorated with hemicyanine dyes as an LRET-based NIR ratiometric luminescent pH fluctuation-nanosensor for the first time. The as-developed nanosensor not only exhibits good antidisturbance ability, but it also can reversibly sense pH and linearly sense pH in a range of 6.0-9.0 and 6.8-9.0 from absorption and upconversion emission spectra, respectively. In addition, the nanosensor displays low dark toxicity under physiological temperature, indicating good biocompatibility. Furthermore, live cell imaging results revealed that the sensor can selectively monitor pH fluctuation via ratiometric upconversion luminescence behavior. [ABSTRACT FROM AUTHOR]

The new mononuclear copper(II) complex, [CuCl(C10H8N2)2]BF4·CH2Cl2, was prepared by a new procedure using photo-irradiation and a nitro­gen atmosphere. X-ray analysis reveals a slightly distorted trigonal–bipyramidal coordination geometry of copper(II); the axial ligands and the CuII atom deviate slightly from linearity [N—Cu—N = 175.3 (3)°]. [ABSTRACT FROM AUTHOR]

Two donor-acceptor (D-A) type conjugated copolymers, P1 and P2, are designed and synthesized. A classical benzothiadiazole acceptor is used to replace a thiophene unit in the polymer chain of P1 to obtain P2 terpolymer. Compared with P1, P2 exhibits broader absorption spectra, higher absorption coefficient, deeper lowest unoccupied molecular orbital level, and a relatively lower band gap. As a result, the P2-based solar cell exhibits a high power conversion efficiency (PCE) of 6.60%, with a short-circuit current (Jsc) of 12.43 mA cm-2, and a fill factor (FF) of 73.1%, which are higher than those of the P1-based device with a PCE of 4.70%, aJsc of 9.43 mA cm-2, and an FF of 61.6%. [ABSTRACT FROM AUTHOR]

Y2O3:Eu were prepared through precursors synthesized by leaching tests, removing impurities, enrichment of Y and Eu from residual purified liquors, annealing treatment, and high temperature solid-state reaction method, which is the most suitable for large-scale production. The analysis of product shows that the purity is 99.42%. The resultant powders were characterized by X-ray diffraction (XRD), differential thermal analysis (TG-DTA), scanning electron microscope (SEM), and photoluminescence (PL). Compared with the commercial phosphors, the XRD spectrum of the product samples revealed the synthesized particles to have a pure cubic Y2O3:Eu structure without any impurities in the crystalline phase. On the morphology, the Y2O3:Eu particles synthesized by a combustion and high temperature solid state process with sintering aids, were large and uniform. For luminescence property, the emission intensity of Y2O3:Eu phosphors synthesized by combustion process and high temperature solid state process with sintering aids were higher than those without sintering aids, at 1400 °. [ABSTRACT FROM AUTHOR]

In the title complex, [Ru(C25H46P2)2Cl2] or RuCl2(dcpm)2 [dcpm is 1,2-bis­(di­cyclo­hexyl­phosphino)­methane, C25H46P2], the Ru atom (site symmetry ) is in a octahedral coordination environment with two chelating dcpm ligands and two trans chloro ligands. [ABSTRACT FROM AUTHOR]

Previous reports of fluorescent sensors for alcohols based on charge-transfer character of their excited state are based on mono-, di-, and tetra-phosphonate cavitands, which are capable of selecting analytes through shape/size selection and various specific H-bonding, CH−π, and cation–dipole interactions. To contrast, color changes based on absorption properties of the ground state are more suitable for direct observation with the naked eye. Three sensitive and selective colorimetric sensors for C1–C4 alcohols have been developed on the basis of alcohol-mediated ground-state intramolecular proton transfer. Reverse proton transfer induced by water achieves a fully reversible reaction. In addition, the solvent color indicates alcohol concentration. [ABSTRACT FROM AUTHOR]

The reason why delayed RBC engraftment and pure red cell aplasia (PRCA) develop only in some but not all recipients of major ABO-incompatible hematopoietic stem cell transplantation (HSCT) remains elusive and the underlying mechanisms are not fully understood. Understanding how incompatible erythroid blood group antibodies (Abs) interact with ABH antigens (Ags) of grafts, and investigating how to induce artificially accommodation of grafts are of obvious importance in transplantation immunology. The effects of anti-H on proliferation, apoptosis, and α-(1,2)-fucosyltransferase gene (FUTJ) expression in erythroid differentiated K562 cells were analyzed by the MTT assay, Annexin V/PI staining, and quantitative RT-PCR method. The growth of erythroid differentiated K562 cells was significantly suppressed when anti-H dilution was ≤1:8 (P< 0.001, as compared with 1:16). Under the complement-free culture conditions, the apoptotic ratio of erythroid differentiated K562 cells was significantly increased when anti-H dilution was ≤1:16 (P<0.05, as compared with 1:32). The apoptosis was not only closely associated with anti-H dilution (F = 138.991, P<0.001 ), but also correlated with treated time (F = 583.249, P<0.001 ), which indicated typical dose- and time-dependent effects. Under the complement-free culture conditions, the FUT1 mRNA expression level was also suppressed when anti-H dilution was ≤1:16 (P<0.05, as compared with 1:32), which also manifested in typical dose-dependent (F= 130.356, P<0.001) and time-dependent (F= 1432.00, P<0.001) effects. The results confirm that anti-H can trigger apoptosis and down-regulate FUT1 expression in erythroid differentiated K562 cells without complement mediation. The findings suggest that anti-H could accommodate grafts through triggering apoptosis and down-regulating Futl expression to reduce ABH antigens. [ABSTRACT FROM AUTHOR]

A highly fluorescent chemosensor based on 1,8-naphthyridine with high sensitivity and selectivity toward Ni2+/Cu2+ over other cations both in aqueous solution over a wide pH range (4--10) and in cellular environments was developed. Counteranions such as acetate, sulfate, nitrate, and perchlorate have no influence on the detection of such metal ions. Ethylenediamine showed high selectivity toward the in situ-prepared Cu2+ complex over die Ni2+ complex, which can be applied to distinguish Ni2+ and Cu2+. The Ni2+-induced fluorescence on--off mechanism was revealed to be mediated by intramolecular charge transfer from the metal to the ligand, while that by Cu2+ involves intramolecular charge transfer from the ligand to the metal, as confirmed by picosecond time-resolved fluorescence spectroscopy and time-dependent density functional theory calculations. [ABSTRACT FROM AUTHOR]

An “off-on” Zn2+and “on-off” Cu2+fluorescent chemosensor Cwas designed and synthesized. The binding of Cand Zn2+/Cu2+is chemically reversible by the addition of EDTA disodium solution; moreover, the fluorescence emission signal of ZnCdecreased with the addition of Cu2+, demonstrating that ZnCcould detect Cu2+viametal displacement. [ABSTRACT FROM AUTHOR]