1,282 research outputs found
Uniqueness of blowup at singular points for superconductivity problem
In this paper, we prove that the uniqueness of blowup at the maximum point of
coincidence set of the superconductivity problem, mainly based on the
Weiss-type and Monneau-type monotonicity formulas, and the proof of the main
results in this paper is inspired the recent paper \cite{CFL22} by
Chen-Feng-Li
Comparison of Copper Leaching from Alkaline Copper Quat Type-D Treated Chinese Fir and Mongolian Scots Pine after Different Posttreatments
Chinese fir (Cunninghamia lanceolata Hook.) and Mongolian Scots pine (Pinus sylvestris Linn. var. mongolica Litv.) sapwood were treated with alkaline copper quat type D (ACQ-D) solutions at two concentration levels (0.5 and 1.1%) followed by three posttreatments: oven-drying, conditioning in a humidity chamber, or exposed to boiling water. The effects of treatment on copper leaching from ACQ-D-treated wood were investigated by performing tests according to AWPA E11-06. Analysis of chemical composition and pH values were determined to evaluate the effects of wood species on copper leaching. The results showed that copper leaching from ACQ-D-treated Mongolian Scots pine without posttreatment was lower than that of treated Chinese fir. However, after posttreatment, more copper leaching was observed from ACQ-D-treated Mongolian Scots pine than Chinese fir. For example, after conditioning posttreatment, the percentage of copper leached from 1.1% ACQ-D-treated Chinese fir decreased 58.6 to 1.8%, while for Mongolian Scots pine, it decreased 49.5 to 19.4%. The difference was considered to be related to different chemical compositions and pH levels
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EZH2 RIP-seq Identifies Tissue-specific Long Non-coding RNAs.
BackgroundPolycomb Repressive Complex 2 (PRC2) catalyzes histone methylation at H3 Lys27, and plays crucial roles during development and diseases in numerous systems. Its catalytic subunit EZH2 represents a key nuclear target for long non-coding RNAs (lncRNAs) that emerging to be a novel class of epigenetic regulator and participate in diverse cellular processes. LncRNAs are characterized by high tissue-specificity; however, little is known about the tissue profile of the EZH2- interacting lncRNAs.ObjectiveHere we performed a global screening for EZH2-binding lncRNAs in tissues including brain, lung, heart, liver, kidney, intestine, spleen, testis, muscle and blood by combining RNA immuno- precipitation and RNA sequencing. We identified 1328 EZH2-binding lncRNAs, among which 470 were shared in at least two tissues while 858 were only detected in single tissue. An RNA motif with specific secondary structure was identified in a number of lncRNAs, albeit not in all EZH2-binding lncRNAs. The EZH2-binding lncRNAs fell into four categories including intergenic lncRNA, antisense lncRNA, intron-related lncRNA and promoter-related lncRNA, suggesting diverse regulations of both cis and trans-mechanisms. A promoter-related lncRNA Hnf1aos1 bound to EZH2 specifically in the liver, a feature same as its paired coding gene Hnf1a, further confirming the validity of our study. In addition to the well known EZH2-binding lncRNAs like Kcnq1ot1, Gas5, Meg3, Hotair and Malat1, majority of the lncRNAs were firstly reported to be associated with EZH2.ConclusionOur findings provide a profiling view of the EZH2-interacting lncRNAs across different tissues, and suggest critical roles of lncRNAs during cell differentiation and maturation
Joint Power and Multiple Access Control for Wireless Mesh Network with Rose Projection Method
This paper investigates the utility maximization problem for the downlink of the multi-interface multichannel wireless mesh network with orthogonal frequency division multiple access. A cross-layer joint power and multiple access control algorithm are proposed. Rosen projection matrix is combined with Solodov projection techniques to build a three-memory gradient Rosen projection method, which is applied to solve this optimization problem. The convergence analysis is given and simulations show that the proposed solution achieves significant throughput compared with existing approaches
On the performance of existing acoustic energy models when applied to multi-purpose performance halls
Acoustical measurements were done in two multi-purpose performance halls in the present study. The measured data are compared with predictions from three acoustic energy models in existing literature derived for churches and large reverberant theatres. Results show that the model suitable for the present multi-purpose performance halls is the one which takes into account the time difference between direct sound arrival and onset time of reverberant sound decay. However, unlike the church cases, the time difference appears to have no direct definite relationship with the source-receiver distance alone. A method for the prediction of time difference is then proposed for multi-purpose performance hall application. In addition, the prediction of the late reflected energy is not satisfactory, and this deficiency is the main problem leading to the inaccurate estimation of clarity, definition and centre time in the present study
Multi-stage sizing approach for development of utility-scale BESS considering dynamic growth of distributed photovoltaic connection
The battery energy storage system (BESS) is regarded as one of the most promising address operational challenges caused by distributed generations. This paper proposes a novel multi-stage sizing model for utility-scale BESS, to optimize the BESS development strategies for distribution networks with increasing penetration levels and growth patterns of dispersed photovoltaic (PV) panels. Particularly, an integrated model is established in order to accommodate dispersed PVs in short-term operation scale while facilitating appropriate profits in long-term planning scale. Clusterwise reduction is adopted to extract the most representative operating scenarios with PVs and BESS integration, which is able to decrease the computing complexity caused by scenario redundancy. The numerical studies on IEEE 69-bus distribution system verify the feasibility of the proposed multi-stage sizing approach for the utility-scale BESS.</p
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