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Synoptic maps of Ca II K-normalized intensity at ±40° latitude belt from Carrington rotations 827 (1915 August 10) to 1764 (1985 July 7) are utilized to investigate the long-term variation of the quiet chromospheric differential rotation within solar activity cycles through removing some large values of Ca II-normalized intensity. The equatorial rotation rate of the quiet chromosphere is found to be smaller than that of the chromosphere, and the absolute value of the parameter B is also found to be smaller for the quiet chromosphere than for the chromosphere on the whole, especially during periods of solar cycle maxima. Therefore, we induce that the differential of rotation rate in the quiet chromosphere seems to be enhanced by large-scale magnetic fields. The north–south asymmetry in the solar rotation is also investigated, and the asymmetry coefficients of the chromosphere and the quiet chromosphere are positively correlated in solar cycles 15–17, while they are negatively correlated in solar cycles 18–21.

The suppression of high-intensity blob structures in the scrape-off layer (SOL) by ion-cyclotron range of frequencies (ICRF) power, leading to a decrease in the turbulent fluctuation level, is observed first in the Experimental Advanced Superconducting Tokamak (EAST) experiment. This suppression effect from ICRF power injection is global in the whole SOL at EAST, i.e. blob structures both in the regions that are magnetically connected to the active ICRF launcher and in the regions that are not connected to the active ICRF launcher could be suppressed by ICRF power. However, more ICRF power is required to reach the full blob structure suppression effect in the regions that are magnetically unconnected to the active launcher than in the regions that are magnetically connected to the active launcher. Studies show that a possible reason for the blob suppression could be the enhanced E r × B shear flow in the SOL, which is supported by the shaper radial gradient in the floating potential profiles sensed by the divertor probe arrays with increasing ICRF power. The local RF wave power unabsorbed by the core plasma is responsible for the modification of potential profiles in the SOL regions.

Same-valence Al, Sb and La are doped into In2O3 NWs via nanocasting method. The cation doping leads to lattice distortion to increase the surface adsorbed oxygen, which greatly improves HCHO gas-sensing performance.

患者女，77岁。阴道不规则出血8个月余；腹部CT示子宫颈及宫腔占位性病变，恶性可能。术后标本镜下呈子宫内膜样癌、浆液性癌及绒毛膜癌的形态学特点。免疫组织化学高级别子宫内膜癌及绒癌成分均呈广谱细胞角蛋白阳性、p53弥漫强阳性；高级别子宫内膜癌成分：PAX8阳性，雌激素受体、孕激素受体阴性，p16阳性，WT1阴性；绒毛膜癌成分：绒毛膜促性腺激素、GATA3阳性，p40弱阳性，SALL4阳性，人类胎盘催乳素部分阳性，MUC4阳性。二代测序提示2种成分共有高级别子宫内膜癌中常见的基因突变并有一致的突变位点，包括ARID1A、PIK3R1、MRE11A、TP53、SMARCA4和RNF43，且肿瘤突变负荷和微卫星不稳定状态均相似。合并绒毛膜癌分化的高级别子宫内膜癌是一种极罕见具有高度侵袭性、转移率以及死亡率高的恶性肿瘤，可呈现多种组织学表现，应增加对此肿瘤的认识，以便能精准诊治，使患者获益。.

Advanced high-strength steel (AHSS) is increasingly used in the automotive industry due to its higher strength and lower weight. The traditional forming limit criterion cannot accurately predict the unique shear fracture of AHSS, so great efforts have been made to develop failure criteria that can predict shear fracture. In this paper, a series of tensile and shear tests for four steel sheets of AHSS are designed, the stress triaxiality and equivalent strain to fracture are solved, and the correlation between them and the performance parameters of steel sheets K and n is studied. In order to study the relationship between stress triaxiality and equivalent strain to fracture in the range of low-stress triaxiality, the Hill'48 orthotropic model and modified Mohr–Coulomb (MMC) fracture model were used to establish tensile and shear fracture models of four dual-phase sheets of steel, simulating and studying the plastic fracture of AHSS. Solving the relevant parameters enriches the stress triaxiality of the four steel types, establishes the relationship between the stress triaxiality and the equivalent strain to fracture, and verifies its correctness through tensile and bending tests and simulations. The results show MMC can accurately predict the fracture of these four dual-phase steels, and the quantitative relationship between stress triaxiality and equivalent strain to fracture of the four dual-phase steels in the low-stress triaxiality range 0–0.3 is similar, which can be established and expressed by the performance parameters of each steel type.

To develop an efficient and recyclable photocatalyst, ternary magnetic Fe3O4@ZnO/g-C3N4 nanocomposites were synthesized for the photodegradation of methylene blue (MB). The microstructures, magnetic response and photocatalytic activity of the as-prepared nanocomposites were characterized by using X-ray diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), N2 adsorption–desorption isotherms and spectrophotometer. All results indicate that ZnO nanoparticles anchor on the surface of Fe3O4 nanoparticles and Fe3O4@ZnO exists on the surface of g-C3N4 to form Fe3O4@ZnO/g-C3N4 nanocomposites. The photocatalytic activity to MB of Fe3O4@ZnO/g-C3N4 nanocomposites is significantly higher than those of pristine g-C3N4 and Fe3O4@ZnO. Owing to the heterojunctions between the interface of g-C3N4 and ZnO, the high separation efficiency of the photogenerated electrons and holes increases the radicals [Formula: see text]OH and [Formula: see text]O[Formula: see text] to photodegrade MB. Fe3O4@ZnO/g-C3N4 (20%) presents the highest MB removal of 93.74% and could be easily separated from solution with magnetic separation method.

Mycorrhizal and N-fixing root symbioses evolved at two points in the past when global CO2 was highest, consistent with the high demand these symbioses place on host C. Trees hosting both mycorrhiza and N-fixing bacteria are able to fix more atmospheric CO2 and grow at faster rates than non-symbiotic plants, or plants with only mycorrhiza. We argue that on the basis of this improved C capture, N-fixing trees act as C-pumps, sequestering C and locking it in biomass, thus, if properly managed, can contribute significantly towards the mitigation of rising CO2 levels.

Lithium Beam Emission Spectroscopy (Li-BES) diagnostic has been developed on the Experimental Advanced Superconducting Tokamak (EAST), aiming at providing the edge electron density profile and density fluctuation. This system has been upgraded to 32 × 4 (radial × poloidal) channels since the 2016 campaign with a radial observation range of about 30 cm at the midplane on the low field side. The spatial resolution of Li-BES diagnostic is about 1 cm. The whole optical system of Li-BES diagnostic has been shifted 9 cm away from the tokamak axis perpendicular to the flange at horizontal D-port on EAST since the 2017 campaign. It’s confirmed that transmissivities of Avalanche PhotoDiode (APD) channels in the edge region are improved by comparing the relative light intensity calibration factors of the same row of APD channels before and after the shift. Spatial calibration and relative light intensity calibration of this system have been performed. Based on Schweinzer’s algorithm [J. Schweinzer et al., Plasma Phys. Control. Fusion 34, 1173 (1992)], the edge electron density profile is reconstructed and shown to be consistent with those provided by other diagnostics on EAST. The electron density profile evolution during the plasma current ramp-down process is observed with Li-BES diagnostic in both SOL region and pedestal region. With an injected Li-beam under the high frequency chopping control, the temporal resolution of the reconstructed electron density profile can be up to 10 μ s , which reveals temporal behaviors of fast transient events on EAST, such as the L-H transition and ELM crashes.

There exists much debate about origins of cretaceous-present volcanism in northeast (NE) China. Here we present high-resolution seismic images of the upper mantle beneath NE China by inverting P-wave travel-time data recorded by two dense linear arrays. The inclusion of the new data set has greatly improved sampling of the upper mantle beneath the study region, providing tight constraint on the seismic structure under the intraplate Wudalianchi and Halaha volcanoes. Local-scale low P-wave velocity (low-Vp) anomalies are revealed in the shallow mantle beneath the two volcanoes, whereas a large-scale high-Vp zone is imaged in the mantle transition zone (MTZ). These new results suggest that the two volcanoes, though located at different sites above the stagnant Pacific slab in the MTZ, are likely related to the deep subduction and dehydration of the Pacific slab, possibly through hot and wet upwellings in the big mantle wedge (BMW) beneath Wudalianchi and through deeper hydrous upwelling related to slab avalanche beneath Halaha. Our results also reveal other striking features, such as high-Vp structures resting atop the 410 km discontinuity beneath the Great Xing’an Range and the Songliao Basin, which are attributed to detached continental lithosphere. The delamination most likely occurred in the Cretaceous, which induced widespread magmatism in NE China.

High surface area nickel oxide nanowires (NiO NWs), Fe-doped NiO NWs and

To explore the relationship between sports law project selection and physical health, cardiovascular function of the city elderly. To investigate the state of regular physical activity, physical health, and cardiovascular function. Participants: 1,555 city elderly people aged 60–69 years in 10 cities of Shaanxi Province. Clinical and anthropometrics measurements included height, weight, waistline, blood pressure, heart rate, strength, balance, flexibility. The sports participation rate for the samples was 51.38%, which was with fitness walking (61.08%), Tai Chi (12.52%), fitness run (11.51%), dance(8.89%)as the main items; There were statistically significant difference in WHtR (F = 2.63), heart rate (F = 3.43), balance (F = 4.51), flexibility (F = 3.57), strength (F = 24.69) (all P < 0.05) for the two groups of elderly; Compared with the non-regular physical activity groups, these groups of fitness walking, Tai Chi and fitness running were statistically significant (all P

A flush-mounted Langmuir probe system has been built on the lower graphitic divertor targets in the experimental advanced superconducting tokamak (EAST) in 2016, which is revised from the previous divertor Langmuir probes, aimed to reduce the erosion from high-energy particle and strong heat flux on the probe surfaces exposed in the plasma, and explore new structure applications. The theories of single and triple flush-mounted probes relevant to their dimensions and the plasma parameters in the EAST divertor region are reviewed. During the 2016 EAST campaign, the flush-mounted probe system measured the plasma parameters by using single and triple probes, respectively, to obtain plasma parameters. The results were compared with the previous measurements by the domed probe in the similar condition. The results showed a good agreement between measurements using different probe geometries and techniques. This demonstrated the reliability of the flush-mounted probe system as a diagnostic tool in the EAST divertor. Optimization of these Langmuir probe system for the next generation of EAST lower divertor, which will be upgraded to a full tungsten divertor with active water cooling, is also discussed.

Understanding the characteristics of the solar magnetic field is essential for interpreting solar activities and dynamo. In this research, we investigated the asymmetric distribution of the solar photospheric magnetic field values, using synoptic charts constructed from space-borne high-resolution magnetograms. It is demonstrated that the Lorentzian function describes the distribution of magnetic field values in the synoptic charts much better than the Gaussian function, and this should reflect the gradual decay process from strong to weak magnetic fields. The asymmetry values are calculated under several circumstances, and the results generally show two periodicities related to the variation of the solar B$_0$ angle and the solar cycle, respectively. We argue that it is the small-scale magnetic fields, the inclination of the solar axis, the emergence and evolution of magnetic flux, and the polar fields that are responsible for the features of asymmetry values. We further determined the polar field reversal time of solar cycles 23 and 24 with the flip of asymmetry values. Specifically, for cycle 24, we assert that the polar polarities of both hemispheres reversed at the same time - in March 2014; as to cycle 23, the reversal time of the S-hemisphere is March 2001, while the determination of the N-hemisphere is hampered by missing data., 12 pages, 8 figures; Accepted for publication in ApJ

This is the sixth in a series of papers where we bring collaborating mycologists together to produce a set of notes of several taxa of fungi. In this study we introduce a new family Fuscostagonosporaceae in Dothideomycetes. We also introduce the new ascomycete genera Acericola, Castellaniomyces, Dictyosporina and Longitudinalis and new species Acericola italica, Alternariaster trigonosporus, Amarenomyces dactylidis, Angustimassarina coryli, Astrocystis bambusicola, Castellaniomyces rosae, Chaetothyrina artocarpi, Chlamydotubeufia krabiensis, Colletotrichum lauri, Collodiscula chiangraiensis, Curvularia palmicola, Cytospora mali-sylvestris, Dictyocheirospora cheirospora, Dictyosporina ferruginea, Dothiora coronillae, Dothiora spartii, Dyfrolomyces phetchaburiensis, Epicoccum cedri, Epicoccum pruni, Fasciatispora calami, Fuscostagonospora cytisi, Grandibotrys hyalinus, Hermatomyces nabanheensis, Hongkongmyces thailandica, Hysterium rhizophorae, Jahnula guttulaspora, Kirschsteiniothelia rostrata, Koorchalomella salmonispora, Longitudinalis nabanheensis, Lophium zalerioides, Magnibotryascoma mali, Meliola clerodendri-infortunati, Microthyrium chinense, Neodidymelliopsis moricola, Neophaeocryptopus spartii, Nigrograna thymi, Ophiocordyceps cossidarum, Ophiocordyceps issidarum, Ophiosimulans plantaginis, Otidea pruinosa, Otidea stipitata, Paucispora kunmingense, Phaeoisaria microspora, Pleurothecium floriforme, Poaceascoma halophila, Periconia aquatica, Periconia submersa, Phaeosphaeria acaciae, Phaeopoacea muriformis, Pseudopithomyces kunmingnensis, Ramgea ozimecii, Sardiniella celtidis, Seimatosporium italicum, Setoseptoria scirpi, Torula gaodangensis and Vamsapriya breviconidiophora. We also provide an amended account of Rhytidhysteron to include apothecial ascomata and a J+ hymenium. The type species of Ascotrichella hawksworthii (Xylariales genera incertae sedis), Biciliopsis leptogiicola (Sordariomycetes genera incertae sedis), Brooksia tropicalis (Micropeltidaceae), Bryochiton monascus (Teratosphaeriaceae), Bryomyces scapaniae (Pseudoperisporiaceae), Buelliella minimula (Dothideomycetes genera incertae sedis), Carinispora nypae (Pseudoastrosphaeriellaceae), Cocciscia hammeri (Verrucariaceae), Endoxylina astroidea (Diatrypaceae), Exserohilum turcicum (Pleosporaceae), Immotthia hypoxylon (Roussoellaceae), Licopolia franciscana (Vizellaceae), Murispora rubicunda (Amniculicolaceae) and Doratospora guianensis (synonymized under Rizalia guianensis, Trichosphaeriaceae) were re-examined and descriptions, illustrations and discussion on their familial placement are given based on phylogeny and morphological data. New host records or new country reports are provided for Chlamydotubeufia huaikangplaensis, Colletotrichum fioriniae, Diaporthe subclavata, Diatrypella vulgaris, Immersidiscosia eucalypti, Leptoxyphium glochidion, Stemphylium vesicarium, Tetraploa yakushimensis and Xepicula leucotricha. Diaporthe baccae is synonymized under Diaporthe rhusicola. A reference specimen is provided for Periconia minutissima. Updated phylogenetic trees are provided for most families and genera. We introduce the new basidiomycete species Agaricus purpurlesquameus, Agaricus rufusfibrillosus, Lactifluus holophyllus, Lactifluus luteolamellatus, Lactifluus pseudohygrophoroides, Russula benwooii, Russula hypofragilis, Russula obscurozelleri, Russula parapallens, Russula phoenicea, Russula pseudopelargonia, Russula pseudotsugarum, Russula rhodocephala, Russula salishensis, Steccherinum amapaense, Tephrocybella constrictospora, Tyromyces amazonicus and Tyromyces angulatus and provide updated trees to the genera. We also introduce Mortierella formicae in Mortierellales, Mucoromycota and provide an updated phylogenetic tree. Fil: Hyde, Kevin D.. Mae Fah Luang University. Center Of Excellence In Fungal Research; Tailandia Fil: Norphanphoun, Chada. Mae Fah Luang University. Center Of Excellence In Fungal Research; Tailandia Fil: Abreu, Vanessa P.. Universidade Federal de Viçosa; Brasil Fil: Bazzicalupo, Anna. University of British Columbia; Canadá Fil: Thilini Chethana, K. W.. Mae Fah Luang University. Center Of Excellence In Fungal Research; Tailandia Fil: Romero, Andrea Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; Argentina Fil: Liu, Jian-Kui. Guizhou Academy of Agricultural Sciences; China Fil: Liu, Zuo-Yi. Guizhou Academy of Agricultural Sciences; China Fil: Longoni Plautz Jr., Helio. Instituto de Ciências Biológicas; Brasil Fil: Lumyong, Saisamorn. Chiang Mai University; Tailandia Fil: Maharachchikumbura, Sajeewa S. N.. Sultan Qaboos University; Omán Fil: Matočec, Neven. Ruđer Bošković Institute; Croacia Fil: McKenzie, Eric H. C.. Landcare Research Manaaki Whenua; Nueva Zelanda Fil: Mešić, Armin. Ruđer Bošković Institute; Croacia Fil: Miller, Daniel. Puget Sound Mycological Society; Estados Unidos Fil: Pawłowska, Julia. University of Warsaw; Polonia Fil: Pereira, Olinto L.. Universidade Federal de Viçosa; Brasil Fil: Promputtha, Itthayakorn. Mae Fah Luang University; Tailandia Fil: Ryvarden, Leif. University of Oslo; Noruega Fil: Su, Hong-Yan. Dali University; China Fil: Suetrong, Satinee. National Center for Genetic Engineering and Biotechnology; Tailandia Fil: Tkalčec, Zdenko. Ruđer Bošković Institute; Croacia Fil: Vizzini, Alfredo. Università di Torino; Italia Fil: Wen,Ting-Chi. Guizhou University; China Fil: Wisitrassameewong, Komsit. Seoul National University; Corea del Sur Fil: Wrzosek, Marta. University of Warsaw; Polonia Fil: Xu, Jian-Chu. Mae Fah Luang University; Tailandia Fil: Zhao, Qi. Chinese Academy of Sciences; República de China Fil: Zhao, Rui-Lin. Chinese Academy of Sciences; República de China Fil: Mortimer, Peter E.. Chinese Academy of Sciences; República de China

Ganoderma is a well-known genus of medicinal mushrooms that belongs to the order Polyporales. Many members of this genus are extensively used in traditional Asian medicines. Herein we report a new strain of Ganoderma australe collected in Thailand and identified using macro- and micro-morphological characteristics as well as phylogenetic analysis. The optimal conditions for mycelia growth were 25-30 degrees C at pH 7-8, while sorghum and barley were found to be the best grain media for spawn production. The best medium for mycelia growth was Potato Dextrose Agar (PDA) medium. Para rubber sawdust with organic and inorganic additives is used as a standard cultivation substrate in Thailand. The mycelia were fully distributed throughout the sawdust substrate after being incubated at 30 degrees C, 60-75% relative humidity for 18 days. The first primordia were observed three days after the bags were opened. Three fruiting cycles were obtained, although the weight of mushrooms produced decreased each time (115.04 +/- 48.85 g kg(-1), 72.01 +/- 6.00 g kg(-1) and 36.47 +/- 9.04 g kg(-1), respectively). Extracts of G. australe inhibited Micrococcus luteus, Bacillus subtilis, Staphylococcus aureus and Salmonella typhimurium bacteria however, the extracts were not effective against Escherichia coli and Pseudomonas aeruginosa. This is the first report of the antimicrobial activities observed in G. australe.

The structure of the edge plasma in a magnetic confinement system has a strong impact on the overall plasma performance. We uncover for the first time a magnetic-field-direction dependent density shelf, i.e., local flattening of the density radial profile near the magnetic separatrix, in high confinement plasmas with low edge collisionality in the DIII-D tokamak. The density shelf is correlated with a doubly peaked density profile near the divertor target plate, which tends to occur for operation with the ion B×∇B drift direction away from the X-point, as currently employed for DIII-D advanced tokamak scenarios. This double-peaked divertor plasma profile is connected via the E×B drifts, arising from a strong radial electric field induced by the radial electron temperature gradient near the divertor target. The drifts lead to the reversal of the poloidal flow above the divertor target, resulting in the formation of the density shelf. The edge density shelf can be further enhanced at higher heating power, preventing large, periodic bursts of the plasma, i.e., edge-localized modes, in the edge region, consistent with ideal magnetohydrodynamics calculations.

Coronal heating is a big question for modern astronomy. Daily measurement of 985 solar spectral irradiances (SSIs) at the spectral intervals 1-39 nm and 116-2416 nm during March 1 2003 to October 28 2017 is utilized to investigate characteristics of solar rotation in the solar atmosphere by means of the Lomb \,-\, Scargle periodogram method to calculate their power spectra. The rotation period of coronal plasma is obtained to be 26.3 days, and that of the solar atmosphere at the bottom of the photosphere modulated by magnetic structures is 27.5 days. Here we report for the first time that unexpectedly the coronal atmosphere is found to rotate faster than the underlying photosphere. When time series of SSIs are divided into different cycles, and the ascending and descending periods of a solar cycle, rotation rate in the corona is also found to be larger than that in the photosphere, and this actually gives hidden evidence: it is small-scale magnetic activity that heats the corona.

A real-time disruption predictor using random forest was developed for high-density disruptions and used in the plasma control system (PCS) of the EAST tokamak for the first time. The disruption predictor via random forest (DPRF) ran in piggyback mode and was actively exploited in dedicated experiments during the 2019–2020 experimental campaign to test its real-time predictive capabilities in oncoming high-density disruptions. During dedicated experiments, the mitigation system was triggered by a preset alarm provided by DPRF and neon gas was injected into the plasma to successfully mitigate disruption damage. DPRF’s average computing time of ∼250 μs is also an extremely relevant result, considering that the algorithm provides not only the probability of an impending disruption, i.e. the disruptivity, but also the so-called feature contributions, i.e. explainability estimates to interpret in real time the drivers of the disruptivity. DPRF was trained with a dataset of disruptions in which the electron density reached at least 80% of the Greenwald density limit, using the zero-dimensional signal routinely available to the EAST PCS. Through offline analysis, an optimal warning threshold on the DPRF disruptivity signal was found, which allows for a successful alarm rate of 92% and a false alarm rate of 9.9%. By analyzing the false alarm causes, we find that a fraction (∼15%) of the misclassifications are due to sudden transitions of plasma confinement from H- to L-mode, which often occur during high-density discharges in EAST. By analyzing DPRF feature contributions, it emerges that the loop voltage signal is that main cause of such false alarms: plasma signals more apt to characterize the confinement back-transition should be included to avoid false alarms.

Exploring the corresponding relation between structural and physical properties of materials at the atomic scale remains the fundamental problem in science. With the development of the aberration-corrected transmission electron microscopy (AC-TEM) and the ultrafast optical spectroscopy technique, sub-angstrom-scale spatial resolution and femtosecond-scale temporal resolution can be achieved, respectively. However, the attempt to combine both their advantages is still a great challenge. Here, we develop in situ optical spectroscopy with high temporal resolution in AC-TEM by utilizing a self-designed and manufactured TEM specimen holder, which has the capacity of sub-angstrom-scale spatial resolution and femtosecond-scale temporal resolution. The key and unique design of our apparatus is the use of the fiber bundle, which enables the delivery of focused pulse beams into TEM and collection of optical response simultaneously. The generated focused spot has a size less than 2 µm and can be scanned in plane with an area larger than 75 × 75 µm2. Most importantly, the positive group-velocity dispersion caused by glass fiber is compensated by a pair of diffraction gratings, thus resulting in the generation of pulse beams with a pulse width of about 300 fs (@ 3 mW) in TEM. The in situ experiment, observing the atomic structure of CdSe/ZnS quantum dots in AC-TEM and obtaining the photoluminescence lifetime (∼4.3 ns) in the meantime, has been realized. Further ultrafast optical spectroscopy with femtosecond-scale temporal resolution could be performed in TEM by utilizing this apparatus.

Rotation is a significant characteristic of the Sun and other stars, and it plays an important role in understanding their dynamo actions and magnetic activities. In this study, the rotation of the solar chromospheric activity is investigated from a global point of view with an over 40 yr Mg II index. We determined the time-varying rotational period lengths (RPLs) with the synchrosqueezed wavelet transform which provides high temporal and frequency resolution; furthermore, we compared the RPLs with the photospheric and coronal RPLs obtained from the sunspot numbers and the 10.7 cm radio flux data. The significance of the RPLs is taken into consideration. We found that the RPLs of the chromosphere exhibit a downward trend, as do those that of the photosphere and corona; in addition, their RPLs at the recent four solar maxima also show a declining trend. It suggests that the rotation of the solar atmosphere has been accelerating during the recent four solar cycles, which is inferred to be caused by the declining strength of solar activity. The variations of the solar atmospheric RPLs show periodicities of multiple harmonics of the solar cycle period, and it is modulated by the solar activity cycle., 12 pages, 11 figures; published in ApJ on Oct 13, 2020

This study uses the diversity of materials at known locations in the Experimental Advanced Superconducting Tokamak (EAST) to extract, local information on which plasma-surface interaction processes are dominant during Ion Cyclotron Resonance Heating (ICRH) (near vs far field effects). Metallic impurity content is indicated by the intensity of impurity line emissions observed with a fast-time-response extreme ultraviolet (EUV) spectrometer, normalized to line-averaged plasma density, i.e. Iimp/ne. Parametric dependencies are explored over scans of ICRH and LH (Lower Hybrid) power and for different toroidal phasings between straps, strap power balance, and magnetic configurations. This diversity of behavior is interpreted as the signature of different physical processes. Before 2017, as only the upper divertor region contained tungsten (W), the W content in the core used to increase a lot when moving from lower (LSN) to upper single null (USN) configurations, and was correlated with the total injected power rather than the ICRH power. Molybdenum (Mo), covering the part of the inner wall facing one ICRF antenna appear sensitive to this antenna power and phasing benchmarked by modelling suggesting a probable interaction due to residual ICRF waves crossing the plasma. Materials close and magnetically-connected to an active antenna show better correlation with ICRF antenna electrical tuning than those which are far away, or not connected. This is particularly the case with W since 2018, because the limiter tiles of the LH launchers were changed from graphite to tungsten. In these latter conditions, it is shown that W sources at the mid-plane (equatorial plane) contribute to a significant fraction of the core contamination by tungsten (25% in ohmic regime, and more during ICRH).

EAST achieved 101.2 seconds H-mode discharge with total power injection up to 3MW in 2017. Consequently to the enhanced auxiliary heating power, the active divertor heat flux control is urgently needed in EAST. In 2018, the active divertor detachment feedback control was implemented successfully in EAST plasma control system (PCS) with divertor Langmuir probe measurements for evaluating the divertor particle flux. The control algorithm controlled the degree of detachment effectively during the 2018 EAST experiments through either D2 fueling in the low field side using SMBI or impurity seeding from the divertor volume in H-mode plasmas, without significant degradation of the core-plasma performance, i.e., exhibiting good core-edge-divertor integration. The algorithm implementation in PCS and experimental results will be reported in this paper. Further efforts will be made to extend active feedback control towards long-pulse H-mode detachment maintenance in the near future, which will benefit the high power, H-mode operation for ITER.

In order to achieve long-pulse H-mode plasma scenario over 400 s with high heating power in the Experimental Advanced Superconducting Tokamak (EAST) device, the lower graphite divertor will be upgraded into a tungsten (W) divertor with active water cooling, which consists of the W/Cu monoblock units and the W flat-tile units as the divertor plasma facing components. As a fundamental diagnostic tool, the divertor Langmuir probe (Div-LP) diagnostic system will be upgraded accordingly. This paper presents the design of two kinds of new Div-LP systems, which are planned to be utilized on the W/Cu monoblock units and the W flat-tile units for the upgraded lower tungsten divertor, respectively, including their structures and preliminary poloidal and toroidal layouts. The Div-LP diagnostic system can measure the plasma parameters with the schemes of triple-probe, double-probe, and single-probe, to obtain the spatial and temporal distribution of plasma behavior on the divertor targets, which is useful for the discharge control and operation in EAST. In addition, the thermal analysis of the two kinds of probe assemblies is also carried out by using the three-dimensional finite element code ANSYS, which is aimed to get the optimal designs to withstand the long-pulse and high-power operation in EAST future experiments.

Correlations between the edge fluctuations and the pedestal evolution during the relatively large edge localized mode (ELM) cycles at high pedestal normalized electron collisionality ( ν e , ped * > 1) on the EAST tokamak are investigated. Not only the edge electrostatic coherent mode (ECM, ∼50 kHz) and the low frequency magnetic coherent mode (MCM, ∼32 kHz) but also a high frequency electromagnetic mode (HFM, >150 kHz) are observed to be coexisting between ELMs. After the ELM crash, the pedestal electron temperature recovered faster than the pedestal electron density. It is found that the saturation of the ECM coincides more with the saturation of the pedestal electron density, while the saturation of the HFM and MCM coincides more with the saturation of the pedestal electron temperature. In addition, the characteristics of the electromagnetic fluctuations (the HFM and MCM) are studied in detail: the HFM propagates in the electron diamagnetic drift direction in the laboratory frame with an average poloidal wave number of k ¯ θ HFM ≈ 0.17 cm − 1, while the MCM propagates in the ion diamagnetic drift direction in the laboratory frame with k ¯ θ MCM ≈ 0.12 cm − 1 and the toroidal mode number of n = 1. Furthermore, both the HFM and MCM have inward average radial wave numbers of k ¯ R HFM ≈ 0.13 cm − 1 and k ¯ R MCM ≈ 4.64 cm − 1. The bispectral analysis shows that the HFM and MCM have strong nonlinear interactions. The HFM is clearly observed on both low and high field side Mirnov coils, which might suggest a feature beyond a ballooning type instability, e.g., the kinetic ballooning mode. These studies may contribute to a better understanding of the pedestal evolution.

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The plasma current profile modification in the edge region is observed in LHCD (lower hybrid current drive) plasmas for the first time in EAST, correlated with an increased level of PI (parametric instability) activities with the decrease in LH (lower hybrid) source frequency or the increase in plasma density. With the increase in the PI strength, an increase in the edge current is observed despite of a reduction in current drive capability. In these plasmas, strike-point splitting behaviors are also observed, implying the modification of the magnetic geometry in the scrape-off-layer. Results show the effects of LH frequency and plasma density on power dissipation in the edge region, suggesting a role of anomalous wave power damping on the modification of current profile at the plasma edge. These novel results are significant in that they give insight for the first time into how nonlinear wave-plasma interactions such as PI may directly impact the edge current profile, the control of which is critical in order to achieve optimized modes of operation in a steady state fusion reactor. © 2018 IAEA, Vienna.

In this paper, nickel oxides (NiO) and iron (Fe)-doped NiO nanowires (NWs) with the various doping content (from 1 to 9 at%) were synthesized by using SBA-15 templates with the nanocasting method. All samples were synthesized in the same conditions and exhibited the same mesoporous-structures, uniform diameter, and defects. Mesoporous-structures with high surface area created more active sites for the adsorption of oxygen on the surface of all samples, resulting in the smaller surface resistance in air. The impurity energy levels from the donor Fe-doping provided electrons to neutralize the holes of p-type Fe-doped NiO NWs, which greatly enhanced the total resistance. The comparative gas-sensing study between NiO NWs and Fe-doped NiO NWs indicated that the high-valence donor Fe-doping obviously improved the ethanol sensitivity and selectivity for Fe-doped NiO NWs. And Ni0.94Fe0.06O1.03 NWs sensor presented the highest sensitivity of 14.30 toward ethanol gas at 320 °C for the high-valence metal-doping.

To compare the curative effects of two unilateral puncturation percutaneous vertebroplasty (PVP) for the pain caused by multiple-level osteoporotic vertebral body compression fractures (OVCF) in senile patients.From June 2008 to November 2014, eighty-nine cases suffering from fresh multiple-level OVCF were randomly divided into experimental group (n=51) and control group (n=38). Patients underwent PVP guided by C-arm fluoroscopy in the prone position. We monitored and recorded the visual analgesic scale (VAS) at pre-operation and 2 days post-operation, operation time, exposure duration, bone cement injection amount and extraosseous cement leakages.PVP procedures were successful in both groups without serious complications. The VAS scores in both two groups at 2 days post-operation were significantly lower than VAS scores at pre-operation (p0.05). The operation time and exposure duration in the observational group were significantly lower than those in the control group (p0.05). However, bone cement injection amount and extraosseous cement leakages in the observing group were similar to those in control (p0.05).The curative effects of two unilateral puncturation PVPs were satisfactory. However, puncturation method had lower operation time and lower X-ray exposure dose. We concluded that puncturation method was a suitable method to be considered for clinical application.

Objective: To establish an animal model for heterotopic ossification (HO) induced by sharp instrument injury in Sprague-Dawley (SD) rat and to investigate its possible mechanism. Materials and methods: A total of 48 male SD rats were divided into 3 groups (n=16). In sham group, incision and suture were performed only in the left leg. Partial tenotomy was performed in the left Achilles tendons in the PAT group. In Achilles’ tenotomy (AT) group, tenotomy was performed in the left Achilles tendons to establish animal model of EO. X-ray and histological examinations were made at 6 and 10 weeks after operation. Results: No HO occurred in the sham and PAT groups. In AT group, X–ray results on 4 rats showed cartilage and bone formation while the remaining 4 rats showed chondrification in histological examination at 6 weeks after operation. At 10 weeks all rats showed bone formation with trabecular bone. This kind of HO usually develops through a process of endochondral ossification. Conclusion: Tenotomy is a simple, effective and feasible method to induce HO.

A novel bi-directional Retarding Field Analyzer (RFA) probe has been installed on a fast reciprocating drive system on the Experimental Advanced Superconducting Tokamak (EAST) to measure the ion temperature and fast electron fluxes. A Langmuir probe assembly was added on the top of the RFA head to control the RFA position relative to the last closed flux surface and to have a possibility to measure the electron density and temperature as well. Except the ion temperature, the fast electron fluxes from both ion and electron drift sides have been measured during lower hybrid current drive. The RFA probe has been also used to measure the fast electrons associated with edge localized modes (ELMs), indicating their substantial presence in the scrape-off-layer plasma of EAST.

In this work, the waterborne graphene oxide/polyurethane-acrylate (GO-WPUA) oligomer was prepared based on isophorone diisocyanate (IPDI), polyether polyol (NJ-220), graphene oxide (GO), dimethylol propionic acid (DMPA) and hydroxyethyl methylacrylate (HEMA). A series of the UV-curable waterborne graphene oxide/polyurethane-acrylate composites containing different content of GO were obtained with oligomer, monomers (BA and TPGDA) and photoinitiator Darocur 1173. The structure, viscosity, particle size and surface tension of emulsions were measured. Some mechanical performances, solvent resistance, the water absorption and thermal property of films were investigated. When the content of GO is 0·01%, the UV-curable film has the best mechanical property. The obtained composites have great potential application such as coatings, leather finishing, adhesives, sealants, plastic coatings and wood finishes.

Objective: To explore the effects of protein factor Oncostatin M (OSM), a member of the Interleukin-6 (IL-6) family on cell proliferation, osteogenic differentiation and mineralization. Materials and methods: Basal nutrient solutions of different concentrations of OSM (0, 5, 10, 20, 40, 80 ng/ml) were used. In order to divide embryonic origin between mesenchymal stem cells C3H10T1/2 of in vitro cultured mice, and the effects of in vitro proliferation efficiencies of C3H10T1/2 cells of different concentrations of OSM, the C3H10T1/2 cells were divided into four groups: (1) Basal nutrient solution group (negative control); (2) Osteogenesis induced liquid group (positive control); (3) OSM (20 ng/ml) group; (4) Experimental group (osteogenesis induced liquid + OSM (20 ng/ml)). The expressions levels of relevant osteogenesis and mineralization genes were detected. Results: OSM had several effects on promoting the proliferation of embryonic origin mesenchymal stem cells C3H10T1/2 with respect to time of exposure as well as concentrations. In the present study, it has been shown that when the concentration of OSM is 20 ng/ml, the effects of promoting proliferation are most obvious. OSM can induce osteogenic differentiation of C3H10T1/2, make the process of osteogenic differentiation in advance, and promote the formation of end-stage calcium deposits and mineralized nodule, and osteogenic differentiation of C3H10T1/2 is finally achieved. Conclusion: OSM can promote the proliferation of C3H10T1/2, and induce its osteogenic differentiation and end-stage mineralization.

Volume recombination plays an important role towards plasma detachment for magnetically confined fusion devices. High quantum number states of the Balmer series of deuterium are used to study recombination. On EAST (Experimental Advanced Superconducting Tokamak), two visible spectroscopic measurements are applied for the upper/lower divertor with 13 channels, respectively. Both systems are coupled with Princeton Instruments ProEM EMCCD 1024B camera: one is equipped on an Acton SP2750 spectrometer, which has a high spectral resolution ∼0.0049 nm with 2400 gr/mm grating to measure the Dα(Hα) spectral line and with 1200 gr/mm grating to measure deuterium molecular Fulcher band emissions and another is equipped on IsoPlane SCT320 using 600 gr/mm to measure high-n Balmer series emission lines, allowing us to study volume recombination on EAST and to obtain the related line averaged plasma parameters (Te, ne) during EAST detached phases. This paper will present the details of the measurements and the characteristics of deuterium Balmer series line emissions during density ramp-up L-mode USN plasma on EAST.