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Quartz fiber fabric is widely used in national defense, military and aerospace industries due to its good high-temperature resistance, chemical stability and excellent thermal shock resistance. However, the tendency of quartz fiber fabric to undergo thermal degradation due to crystallization at high temperature may destroy its high-temperature performance, particularly its high-temperature mechanical properties. In this study, an aluminum oxide (Al2O3) ceramic coating was synthesized on the surface of two-dimensional quartz fiber fabric in aqueous solution near room temperature. The surface morphology and chemical composition were studied to evaluate the quality of the coating by scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The annealing behavior at high temperature was evaluated by using an electronic universal testing machine after high-temperature processing. The annealing behavior of the aluminum oxide coating could be improved effectively. The maximum load that the coated fabric can bear was 2.5 times higher than that of the original fabric, proving the superior high-temperature mechanical properties of the coated fabric. The coating on the surface of the fiber could block the damage of high temperature to the quartz fiber, improving the crystallization phenomenon of the quartz fiber at high temperature, followed by improvement in the high-temperature mechanical properties of the fabric.

Root rot is a main disease in Panax notoginseng, which is severe and difficult to control. Arbuscular mycorrhizal fungi (AMF) are known to effectively prevent plant diseases caused by soil-borne pathogens. However, the potential role of AMF as a biocontrol agent against root rot in P. notoginseng is still unclear. This study aims to investigate the efficacy of AMF, including Funneliformis mosseae, Rhizophagus intraradices and Claroideoglomus etunicatum, individually and in combination, for controlling root rot in P. notoginseng seedlings. The effect of different AMF on the indicators of P. notoginseng growth, superoxide dismutase, peroxidase activity, proline, malondialdehyde, soluble sugars and proteins were measured. The effects of different AMF on root rot resistance were comprehensively evaluated using the subordinate function method. The results showed that the incidence of root rot decreased from 75% to 12.5%–50.0% after inoculation with different AMF agents, and the disease index decreased from 22.92% to 6.25%–16.67%. Moreover, AMF significantly increased the growth parameters of P. notoginseng, such as plant height (6.35%–41.73%), stem diameter (12.98%–45.96%), fresh weight (6.28%–95.35%), and leaf area (8.89%–97.71%). Moreover, AMF also improved the content of chlorophyll (2.40%–50.67%) and rate of net photosynthetic (52.08%– 279.17%), enhancing superoxide dismutase (4.02%–114.89%) and peroxidase activity (85.60%–139.98%), as well as promoting the accumulation of soluble sugars (30.21%–90.00%), proteins (3.31%–65.81%), and proline (4.02%–114.89%) in the root and leaf, while reducing the malondialdehyde content (19.99%–139.98%). Particularly, C. etunicatum was found to be the most effective in promoting growth and disease resistance in P. notoginseng. These findings provide insights into the potential use of AMF as an effective biocontrol agent to manage root rot.

Yttrium aluminum garnet (Y3Al5O12, YAG) is an important functional material. However, the strict and complicated preparation has limited its wide application. This study aimed to rapidly synthesize Y3Al5O12 by plasma electrolysis for the first time. The prepared powder was studied from topography, structure and elements by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The powder had a good crystal form with a spherical shape. The single kind of diffraction peak of Y3Al5O12 in XRD revealed the high purity of the synthesized powders. The study of the relationship between the applied voltage and the synthesized powder revealed a threshold voltage of 210 V under the present condition. The higher voltage led to the damage of the electrode due to excessive heat. The synthesis of the YAG powder had a melt-quench process. The two processes were carried out at the same time.

Cement-improved loess (CIL) is used as a common filler for subgrade construction projects in loess areas. The freeze-thaw (F-T) conditions have a significant effect on the stability of cement-improved loess subgrades in seasonally frozen regions. In this paper, the CIL samples, experiencing different numbers of F-T cycles at varying freezing temperatures, were used in consolidated undrained triaxial compression tests to investigate the effect of F-T conditions on the mechanical properties of CIL. The results show the stress-strain curves of CIL are of a strain-softening type with strong elastic brittleness. The initial tangent modulus of CIL increases with the growing confining pressure and gradually decreases with the increase in the F-T cycle number and the decreasing freezing temperature. It loses 46.4% of its original value after the twelfth F-T cycle with the confining pressure of 150 kPa and at the freezing temperature of −15 °C. The strength of CIL decreases with the increasing F-T cycle number, but it gradually tends to keep stable after the sixth F-T cycle. The strength also decreases with the reduction in the freezing temperature. It loses 37.7% of its original value after the twelfth F-T cycle with the confining pressure of 150 kPa and the freezing temperature of −15 °C. To express the nonlinearity correlation between the strength and confining pressure under F-T conditions, the Weibull function was applied and a nonlinear Mohr-Coulomb strength criterion was proposed. Through introducing a breakage rate function and a local strain coefficient, a binary-medium constitutive model consisting of bonded elements (soil-particle cohesion) and frictional elements (soil particles or soil aggregations) was established to describe the stress-strain relationships of CIL under F-T conditions. The test results indicated that the model can well describe the strain-softening phenomenon of the stress-strain curve of CIL and reflect the breakage mechanism of CIL.

In the manuscript, the liquid-phase deposition technique was used to successfully deposit an Al2O3 ceramic coating on the quartz fiber. The thickness of the coating was not uniform. The thickest pa...

In the manuscript, a uniform SiC/SiO2 coating was successfully prepared on the surface of carbon fiber by electrolytic plasma spraying method, which is beneficial to the dielectric loss and interfacial polarization. The antioxidation and absorption capacity of electromagnetic waves were greatly improved. The surface morphology, chemical composition, oxidation resistance and electromagnetic wave absorption properties of the coated carbon fibers were analyzed in detail. The effect of sample thickness on the electromagnetic wave loss was investigated in 2–18 GHz. The absorbing mechanism of the coated carbon fiber was discussed. The coated carbon fiber exhibits superior absorbing properties due to the synergistic effect of dielectric loss and reflection loss. The minimum reflection loss of − 11.6 dB at the thickness of 2.3 mm at 7.1 GHz. Meanwhile, the SiC/SiO2 coating on carbon fiber also has oxidation resistance, which was 28% higher than the bare sample.

The applications of carbon fibers are limited above 500 °C by their poor oxidation resistance in oxygen-containing atmosphere. In this study, oxidation-resistant SiO2/SiC coatings were synthesized on carbon fiber fabric by a novel plasma electrolysis spray process. The microstructure and properties of coatings prepared at different spray distances and different spray times were investigated. The coatings were mainly composed of SiO2 and SiC with a SiC content varying between about 15 and 95 wt.%. The optimal coating was obtained with a spray time of 30 s and a spray distance of 20 mm; it corresponded to an increase in the fabric burnt-out temperature by 320 °C. Additionally, the mass loss rate was only around 50% at 900 °C, while the bare carbon fiber was burnt out. The kinetics and thermodynamics processes were also investigated in order to understand this novel plasma electrolysis spray process. We believe that this process will find a wide range of applications in the surface modification of fibers.

In the paper, a simple and reliable method was proposed. A novel metal/ceramic laminated nano-coating (Ni-P/SiC) was prepared on the surface of carbon fiber (CF) by plasma electrolytic spraying and electroless plating. The morphologies, composition, antioxidation, and electromagnetic wave absorbability of the laminated nano-coatings have been studied. The thickness of the coating was 392.8nm measured by scanning electron microscopy (SEM). The coated carbon fiber not only has good resistance to high temperature oxidation, but also has high electromagnetic absorption in the range of 2∼18 GHz. The minimum reflection loss (RL) of the laminated Ni-P/SiC coated CF decreased from −3.9 to −26.95 dB, indicating that 99% of the electromagnetic waves were absorbed. The weight loss rate was reduced and the complete weight loss temperature was increased from 950 to 1050°C. The electromagnetic wave absorption mechanism was discussed in detail.

Grape is intolerant of aluminum. This intolerance leads to severe aluminum poisoning when the plants are cultivated in acidic soil, resulting in a decline in their yield and quality. To reduce and ...

Two shape-selective HZSM-5 catalysts with similar pore size were prepared by silicalite-1 coating or boron modification, respectively. These catalysts samples were characterized by XRD, SEM, NH3-TPD, Py-IR and N2 adsorption–desorption isotherms and tested in the alkylation reaction of toluene with methanol. The results indicated that the boron modification weakened the acidity but increased the total amount of acidity sites, while the silicalite-1 coating led to the decrease of the strong acidity and total acidity. Due to the specific shape-selectivity that the micropore architecture afforded and the increment of the weak acid percentage, both catalysts exhibited a high p-xylene selectivity over 98%. Moreover, the higher toluene conversion would be retained once the strong acid sites in the micropores were remained as many as possible under the premise of the shape-selectivity of pore size.

HZSM-5@silicalite-1 catalysts were prepared by the hydrothermal method, and the structure, morphology, acidity and pore texture of core–shell catalysts were studied by XRD, SEM, TEM, NH3-TPD, Py-IR and N2 adsorption/desorption isotherms in detail. Their catalytic performances were tested in the alkylation reaction of toluene with methanol. The results showed that a coating layer was formed in the form of silicalite-1 on HZSM-5. NH3-TPD measurements indicated that HZSM-5@silicalite-1 contained less strong acid sites but more weak acid sites than the parent HZSM-5. The selectivity of p-xylene for toluene alkylation was approximately linear with the percentage of weak acid in total acid. Under the optimal reaction conditions, the conversion of toluene was 34.15%, and the selectivity of p-xylene was 96.77%.

The unsafe deposition process and slow deposition rate of the electrolyte layers are the main obstacles for electrochromic devices (ECDs) toward commercial application. In this work, an ECD with a structure of glass/ITO/WO3/LiF/NiO/ITO has been prepared by electron beam and resistance evaporation methods. The LiF electrolyte is deposited by resistance evaporation with the LiF particles and shows promising potential as the Li+ based electrolyte in ECDs owing to its high transparency and good ionic conductivity. The ECD shows a fast response (4.0 s for bleaching and 9.6 s for coloring), large optical transmittance modulations (∼58.9% at 625 nm, 100 s for coloring), good stability and high coloration efficiency (88.5 cm2 C-1). This work not only indicates that LiF can be used as a Li+ based electrolyte in an ECD, but also paves a new way to fast and safe preparation of ECDs with high performance.

Background: There are paradoxical results regarding whether carbonic anhydrase IX (CAIX) is a prognostic biomarker for patients with clear cell renal cell carcinoma (ccRCC). The objective of this study was to evaluate prognostic significance of CAIX in nonmetastatic ccRCC patients of different stages. Materials and Methods: This is a retrospective study on 1263 patients with nonmetastatic ccRCC from January 2005 to June 2018. Patients were stratified into eight subgroups (pT1a, pT1b, pT2a, pT2b, pT3a, pT3b, pT3c, and pT4) according to the 2016 TNM classification system. Immunohistochemical staining of membranous CAIX was quantified. Cancer-specific survival (CSS) rates in patients with high (>85%) and low (

In this study, electroless nickel plating and electrodeposition were used to deposit thin films on the polymer lattice template prepared by 3D printing, then seven Octet hollow nickel lattice materials with different structural parameters were synthesized by etching process at the expense of the polymer backbone. The microstructure and properties of the Octet structure nickel lattice were characterized by X-ray diffraction, Electron backscattering diffraction and transmission electron microscopy. According to the results, the average grain size of the electrodeposition Ni lattice material was 429 nm, and (001) weak texture was found along the direction of the film deposition. The lattice deformation mode changed with the increase of the lattice length-to-diameter ratio, and it shifted from the lattice deformation layer-by-layer and the overall deformation to the shear deformation in the 45° direction. The strength, modulus and energy absorption properties of the Octet lattice increased with the density, and they were exponentially related to density. In the relative density range of 0.7~5%, Octet hollow Ni lattices with the same density conditions but different structural parameters showed similar compressive strength and elasticity modulus; the energy absorption capacity, however, was weakened as the length-to-diameter ratio increased.

In this paper, a microwave photonic filter (MPF) based on broadband source sliced by SMF-FMF-SMF (SFS) structure is proposed. The performances of the filter are investigated theoretically and experimentally. The response of proposed MPF has similar distribution to the spatial frequency spectrum G of siliced BOS. The effect of BOS on the performance of MPF are discussed by comparing the results of experiment and simulation. Compared with the traditional structure, the proposed MPF has the advantage of resisting external disturbance, which improves the reliability of the filter.

Zhang Y, Sun H, Li W, et al. Neuropsychiatr Dis Treat. 2021;17:2269–2280. The authors have advised the affiliation list on page 2269 is incorrect. The correct author list and affiliations are as follows. Yongfu Zhang1,* Hengwen Sun2,* Wengao Li3 Xian Luo4 Ting Liu4 Fan Fang5 Julan Xiao5 Samradhvi Garg6 Yuan Yang4,7,8 Yu Chen5 1Department of Anesthesiology, Guangzhou Women and Children’s Medical Centre, Guangzhou, Guangdong, People’s Republic of China; 2Department of Radiotherapy, Cancer Center, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Guangzhou, Guangdong, People’s Republic of China; 3Department of Psychiatry, 999 Brain Hospital, Guangzhou, Guangdong, People’s Republic of China; 4Department of Psychiatry, Southern Medical University Nanfang Hospital, Guangzhou, Guangdong, People’s Republic of China; 5School of Nursing, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China; 6School of Health in Social Science, University of Edinburgh, Edinburgh, Scotland, UK; 7Unit of Psychiatry, Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, SAR, People’s Republic of China; 8Center for Cognition and Brain Sciences, University of Macau, Macau, SAR, People’s Republic of China *These authors contributed equally to this work Read the original article

In the present manuscript the patented non-electrode plasma electrolysis technique was successfully applied in order to deposit nano-structured Al2O3 ceramic coating on the quartz fiber. It was found that the grooves on the blank fiber were covered by Al2O3, accordingly decreasing the surface defects. In this case, the coating effectively improved the breaking strength of the quartz fiber at elevated temperatures. The coated fiber still exhibited relatively higher strength of 0.38 N/tex after annealing at 600 °C for 60 min, nearly three times as that of the blank fiber. Both the formation mechanism and the protection mechanism of the Al2O3 coating were systematically investigated. We believe that the non-electrode plasma electrolysis will find a wide range of applications in the surface modification of non-conductive fibers.

Normally, higher conversion of benzene represented higher utilization rate of methanol. Given these problems, we have modified HZSM-5 with 3-aminopropyltriethoxysilane (AMEO) and the physical-chemistry properties of the catalysts were characterized by XRD, Zeta potential, Contact Angle Measurement, SEM, NH3-TPD and EDS. Meanwhile, the influence of AMEO addition on the catalytic performance of HZSM-5 for the alkylation of benzene with methanol was researched. Results show that HZSM-5 treated with AMEO, not only the selectivity of target product and the utilization of methanol for the alkylation of benzene with methanol were improved, but also the amount of coke was significant reduced.

Recently we have developed a novel non-electrode plasma electrolysis technique in order to rapidly prepare SiO2/SiC nano-coating onto carbon fiber. The surface and cross-sectional microstructures of the SiO2/SiC nano-coating were systematically investigated. The nano-coating was dense and roughly uniform, mainly composed of amorphous SiO2, where a small amount of SiC was distributed. A superior bonding was observed between the nano-coating and the fiber substrate. The cross-sectional TEM revealed ∼80 nm in the thickness for the coating. The SiO2/SiC nano-coating significantly reduced the oxidation rate with the burn-out temperature increasing from 880 °C to 1250 °C. It was proposed that the heat evolution, mechanical effect and plasma chemical reactions had a critical effect on the formation of the nano-coating. We believe that the novel non-electrode plasma electrolysis technique will find a wide range of applications in modifying the interface of carbon fiber reinforced composite materials.

Yongfu Zhang,1,&ast; Hengwen Sun,2,&ast; Wengao Li,3 Xian Luo,4 Ting Liu,4 Fan Fang,5 Julan Xiao,5 Samradhvi Garg,6 Yuan Yang,4 Yu Chen5 1Department of Anesthesiology, Guangzhou Women and Children’s Medical Centre, Guangzhou, Guangdong, People’s Republic of China; 2Department of Radiotherapy, Cancer Center, Guangdong Provincial People’s Hospital (Guangdong Academy of Medical Sciences), Guangzhou, Guangdong, People’s Republic of China; 3Department of Psychiatry, 999 Brain Hospital, Guangzhou, Guangdong, People’s Republic of China; 4Department of Psychiatry, Southern Medical University Nanfang Hospital, Guangzhou, Guangdong, People’s Republic of China; 5School of Nursing, Southern Medical University, Guangzhou, Guangdong, People’s Republic of China; 6School of Health in Social Science, University of Edinburgh, Edinburgh, Scotland, UK&ast;These authors contributed equally to this workCorrespondence: Yu Chen Email truelife2010@126.comYuan Yang Email yangyuan_yangyuan@163.comBackground: Depression is a commonly seen mental health concern for mothers and fathers during their transition to parenthood. This study aims to provide new insights into the prevalence of maternal and paternal depression, its demographic and clinical correlates, and its symptom network among Chinese pregnant women and their partners.Methods: In this multicenter, cross-sectional study, 769 pregnant women and their partners were assessed by Edinburgh Postnatal Depression Scale (EPDS) from June 15th to Sep 15th, 2020 in southern China. Convenient sampling method was used. Univariate analyses, multivariate logistic regression, and network analyses were conducted. Networks of maternal and paternal depression were compared.Results: In total, 60 (EPDS total score ≥ 13, 7.80%, 95% CI: 5.90– 9.70%) women and 23 (2.99%, 95% CI: 1.78– 4.20%) of these women’s partners reported depression. Physical comorbidities (OR=2.664, P=0.003) was the only factor that was found to significantly correlate with maternal depression. Network analyses showed that the resulting networks were well connected and that there was significant difference of network structure between maternal and paternal depression (M=0.330, P< 0.001). Centrality plot indicated that “sad or miserable” (strength=1.097) was the most central symptom in the maternal depression network, while “scared or panicky” (strength=1.091) was the most central node in the paternal network. The edge between “things have been getting on top of me” – “able to laugh and see the funny side of things” (difference: 0.153, P=0.020), and “scared or panicky” – “the thought of harming myself” (difference: 0.084, P< 0.001) was significantly stronger in women’s partners than that in pregnant women.Conclusion: Maternal and paternal depression during pregnancy could result in significant negative consequences. Symptoms like “sad or miserable” and “scared or panicky” are critical and might be potential targets for further interventions. Evidence-based treatments, such as pharmacology, psychotherapy, community reinforcement and family training, might be beneficial for parents with depression during and after the pregnancy.Keywords: depression, maternal, network, paternal, pregnancy

Background Since the middle of March, the COVID-19 outbreak has been well contained in China. The prevention and control measures for the outbreak have been downgraded to a normalized level. However, until now, the change in level of psychological health amongst perinatal women during the remission phase of the COVID-19 outbreak has not been investigated in China. The aim of this current study was to assess the symptoms of anxiety, depression, insomnia and quality of life (QOL) in perinatal women and to identify potential risk factors associated with these symptoms. Methods This was a cross-sectional, hospital-based survey conducted between March 25th till June 5th, 2020 in southern China. Convenient sampling method was adopted. Women’s anxiety, depression, insomnia symptoms and QOL was examined through standardized measurements. Multivariate logistic regression and Analysis of Covariance (ANCOVA) was conducted for the same. Results A total of 625 perinatal women completed the study; of them, 195 women (31.2%, 95%CI=27.56%–34.84%) reported anxiety, 120 (19.2%, 95%CI=16.10%–22.30%) reported depression, and 87 (13.9%, 95%CI=11.20%–16.64%) experienced symptoms of insomnia. Previous adverse experiences during pregnancy was a significant risk factor for anxiety (OR=1.628, 95%CI=1.069–2.480, P=0.023), depression (OR=1.853, 95%CI=1.153–2.977, P=0.011), and insomnia (OR=2.160, 95%CI=1.290-3.616, P=0.003). Participants having infected friends/families/colleagues were more likely to report anxiety (OR=2.195, 95%CI=1.245–3.871, P=0.007) and depression (OR=2.666, 95%CI=1.482–4.794, P=0.001). Those women whose regular check-ups were severely interrupted by the COVID-19 were also more likely to experience symptoms of anxiety (OR=2.935, 95%CI=1.701–5.062, P

Limited research has been conducted in mainland China to explore the relationship between religious belief and prosocial behaviors such as volunteering and charitable donation. This study aims to investigate whether and how religious belief affects Chinese college students&rsquo, charitable giving and volunteering. Based on a survey of 1992 college students from five universities in Shanghai, the authors found that religious belief has a positive influence on charitable giving. Moral norms and family income level are also significant influencing factors in college students&rsquo, donation behavior. Religious belief does not affect volunteering frequency. Instead, volunteering intensity is affected by political status, social norms exerted by friends and families and volunteering motivations.

Background Gansu is a province with the most serious prevalence of canine Leishmaniasis in China, ranked the first in the number of new cases occurring each year. In order to understand the risk factors of visceral Leishmaniasis in dogs in endemic areas of Gansu province, we conducted an investigation on the risk factors of canine Leishmaniasis in 2 endemic counties from 2018 to 2019, and analyzed the related factors of local CVL infection, so as to provide a basis for exploring new prevention and control methods suitable for Leishmaniasis in China. Methods Leishmaniasis of canine origin was detected in Diebu county and Wenxian County, Gansu province. The risk factors of Leishmania infection in dogs were analyzed by USING IBM SPSS23.0 Pearsonχ2 test and multiple Logistic regression. Results a total of 537 domestic dogs were investigated in the endemic area. The positive rate of Leishmania protozoa nested PCR was 41.15% (221/537). Univariate analysis showed that there were statistically significant differences in age, height, weight, breed, kennel presence, hair length, custody style, physical condition, exercise status, nail symptoms and other variables with the positive rate of nested PCR (P < 0.05).The results of multivariate analysis showed that there was a significant correlation between dog ownership [OR=3.051; 95%CI =(0.965 ~ 9.645), dog ownership [OR=1.974; 95%CI =(1.199 ~ 3.252), dog breed [OR=1.819; 95%CI =(0.999 ~ 3.311)] and hair length [0.053 ~ 0.203]. Conclusions there are a large number of asymptomatic infected dogs in Diebu county and Wenxian County of Gansu Province. The infection rate of local short-haired and pure-bred dogs is high. In order to reduce the risk of canine infection, the publicity and education on prevention of canine Leishmaniasis should be strengthened, so as to reduce the risk of human and animal co-contracting visceral Leishmaniasis.

Objective: Suicide is one of the main reasons cited behind the death rate of cancer, and suicidal ideation (SI) is the first step towards it. This study aimed to investigate the prevalence and associates of suicidal ideation in newly-diagnosed Chinese cancer patients. Methods: This multicenter study was conducted from January 2018 to September 2019. Eligible participants were asked to complete a Case Record Form (CRF), the Patient Health Questionnaire (PHQ-9), General Anxiety Disorder Questionnaire (GAD-7), Fear of Cancer Recurrence Questionnaire (FCRQ-7), and McGill Pain Questionnaire-Visual Analogue Scale (MPQ-VAS). Univariate analyses and multivariate logistic regression analyses were conducted for assessment. Results: Out of 603 patients, 91 (15.1%, 95%CI: 12.23%-17.96%) reported suicidal ideation in the last two weeks. Physical comorbidities (OR=1.808, P=0.039), childhood adversity experience (OR=5.999, P=0.001), cancer pain (OR=1.828, P=0.047), depression (OR=2.811, P=0.013) and anxiety (OR=6.532, P