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Recovery of vanadium from vanadium slag by composite additive roasting-acid leaching process

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Journal of Iron and Steel Research International 2023年第7期30卷 1426-1439页

作者： Jun-yi Xiang Ming-shuai Luo Xi Lu Lu-wei Bai Zhong-peng Zhu Qing-yun Huang Sheng-qin Zhang Kun-peng Guo Xue-wei lv College of Metallurgy and Materials Engineering Chongqing University of Science and TechnologyChongqing 401331China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China

To minimize the vanadium content in the vanadium extraction tailings, composite additive roasting with (CaO + MgO) and subsequent acid leaching process was carried out dealing with vanadium-bearing converter slag. The effect of additive with different MgO/(CaO + MgO) molar ratios on the roasting and leaching behaviours of vanadium slag was investigated, and the optimum process conditions were obtained. The results show that in the roasting experiment, under the conditions of roasting temperature of 850 ℃ and roasting time of 2 h, the main kinds of vanadate transformed from Ca_(2)V_(2)O_(7) to Ca_(5)Mg_(4)V_(6)O_(2)4 and then to Mg_(2)V_(2)O_(7) with the increase in the MgO/(CaO + MgO) molar ratio. In the leaching experiment, under the conditions of particle size less than 75 μm, leaching temperature of 50 ℃, pH of 2.5, liquid–solid ratio of 20:1, and MgO/(CaO + MgO) molar ratio of 1:3, the leaching efficiency of vanadium is increased by about 5%, but the substitution of MgO for most or all of CaO will significantly reduce the leaching efficiency of vanadium. Furthermore, the leaching efficiency of impurities (P and Cr) can also be decreased by a composite addictive (CaO + MgO) roasting process. The X-ray diffraction, scanning electron microscopy, energy dispersive spectrometry, and X-ray photoelectron spectroscopy of the original vanadium slag and solid products of both roasting and leaching processes were also evaluated.

关键词： Vanadium slag Roasting Leaching Vanadate Recovery

Baseline symptoms of depression and anxiety negatively impact the effectiveness of CBTi in treating acute insomnia among young adults

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General Psychiatry 2023年第3期36卷 168-174页

作者： Chenxi Zhang Shufei Zeng Yan Xu shuai Liu Shixu Du Leqin Fang Zhihong lv Lili Zhang Bin Zhang Department of Psychiatry Nanfang HospitalSouthern Medical UniversityGuangzhouChina Center of Sleep Medicine Nanfang HospitalSouthern Medical UniversityGuangzhouChina

Background Cognitive-behavioural therapy for insomnia(CBTi)is the first-line treatment for those with this sleep ***,depressive and anxiety symptoms often co-occur with acute insomnia,which may affect the effectiveness of *** This study aimed to determine the impact of depressive and anxiety symptoms on the efficacy of CBTi in treating acute *** A single-arm clinical trial was conducted among individuals who have acute *** underwent self-guided CBTi for *** insomnia,depressive symptoms and anxiety symptoms were evaluated using the Insomnia Severity Index and the Hospital Anxiety and Depression Scale at baseline,post-treatment and 3-month *** measures analysis of variance was used to assess the effectiveness of CBTi in treating insomnia,depressive symptoms and anxiety symptoms.A multivariate Cox regression model was used to determine the impact of depressive and anxiety symptoms on *** The study found significant reductions in insomnia,depressive symptoms and anxiety symptoms at both post-treatment and 3-month follow-up(F=17.45,p<0.001;F=36.37,p=0.001;and F=81.51,p<0.001,respectively).The duration of CBTi treatment had a positive impact on insomnia recovery(hazard ratio(HR)=0.94,p=0.018).However,baseline depressive symptoms(HR=1.83,p=0.004)and baseline anxiety symptoms(HR=1.99,p=0.001)had significant negative effects on insomnia *** The study showed that a 1-week self-guided CBTi treatment is effective in treating acute insomnia and comorbid depressive and anxiety ***,baseline depressive and anxiety symptoms negatively impact treatment ***,clinicians should assess for depressive and anxiety symptoms before treating acute insomnia with monotherapy CBTi.

关键词： impact CBT treatment

6-Gingerol, asarinin, and deoxyschizandrin improve bronchial epithelium functions in an interleukin-13einduced BEAS-2B cell model

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Journal of Traditional Chinese Medical Sciences 2023年第2期10卷 218-227页

作者： shuai Li Shuzhen Guo Dayu Lin Jiang Yu Jiayang Tang Xiaoxi lv Yuping Zhang Qingqing Wang School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing102488China Institute of Materia Medica Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing100050China

Objective:To explore the effects of 6-gingerol,asarinin,and deoxyschizandrindthe main components of Zingiber officinale(Willd.)Rosc.(Gan Jiang),Asarum heterotropoides ***(Maxim.)(Xi Xin),and Schisandra chinensis(Turcz.)Baill.(Wu Wei Zi),respectivelydon an interleukin(IL)-13einduced BEAS-2B cell model in ***:The BEAS-2B cell model was established using 25 ng/mL IL-13 combined with 1%fetal bovine serum(FBS)in *** mesylate(Mito-Q)treatment was used as a positive control group,and different concentrations of 6-gingerol,asarinin,and deoxyschizandrin were used to treat the *** level of reactive oxygen species(ROS)production was detected by flow *** expression levels of LC3B,Beclin1,adenosine 50-monophosphate(AMP)eactivated protein kinase(AMPK),phosphory-lated-AMPeactivated protein kinase(P-AMPK),dynamin-related protein 1(DRP1),and mitochondrial fusion protein 2(MFN2)were detected by Western *** membrane potential(MMP)assay kit with JC-1 was utilized to detect the level of ***:The BEAS-2B cells exposed to 25 ng/mL IL-13 with 1%FBS showed an increased ROS level and a decreased MMP.6-Gingerol,asarinin,and deoxyschizandrin were able to downregulate ROS level and upregulate the MMP in the BEAS-2B *** and deoxyschizandrin reduced the expression of autophagy protein LC3B,while deoxyschizandrin significantly increased the expression of DRP1 in the BEAS-2B ***:6-Gingerol,asarinin,and deoxyschizandrin can reduce ROS generation and increase MMP,but have different regulatory effects on the expression of autophagy protein and mitochondrial mitotic *** three components have both synergistic and complementary effects in classic medicine *** study may provide an innovative strategy to reduce the lung inflammation related to IL-13.

关键词： Interleukin-13 Mitochondrial function Mitoquinone mesylate 6-Gingerol Asarinin Deoxyschizandrin

Broadband chirped InAs quantum-dot superluminescent diodes with a small spectral dip of 0.2 dB

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Chinese Physics B 2022年第9期31卷 570-574页

作者： Hong Wang Zunren lv shuai Wang Haomiao Wang Hongyu Chai Xiaoguang Yang Lei Meng Chen Ji Tao Yang Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China College of In formation Science and Electronic Engineering Zhejiang UniversityHangzhou 310027China Zhejiang Laboratory Hangzhou 310027China

We report on the fabrication and characterization of InAs/GaAs chirped multilayer quantum-dot superluminescent diodes(CMQD-SLDs)with and without direct Si doping in *** was found that both the output power and the spectral width of the CMQD-SLDs were significantly enhanced by direct Si doping in the *** output power and spectral width have been increased by approximately 18.3%and 40%,***,we shortened the cavity length of the doped CMQD-SLD and obtained a spectral width of 106 *** addition,the maximum output power and spectral width of the CMQD-SLD doped directly with Si can be further increased to 16.6 mW and 114 nm,respectively,through anti-reflection coating and device *** device exhibited the smallest spectral dip of 0.2 dB when the spectrum was *** improved performances of the doped CMQD-SLD can be attributed to the direct doping of Si in the QDs,optimization of device structure and device packaging.

关键词： chirped quantum-dot superluminescent diodes direct Si doping

Pressure effect in the Kondo semimetal CeRu4Sn6 with nontrivial topology

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Chinese Physics B 2018年第9期27卷 477-481页

作者： Jiahao Zhang shuai Zhang Ziheng Chen Meng lv Hengcan Zhao Yi-feng Yang Genfu Chen Peijie Sun Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 1O0190 China University of Chinese Academy of Sciences Beijing 100049 China

Kondo semimetal CeRu4Sn6 is attracting renewed attention due to the theoretically predicted nontrivial topology in its electronic band structure. We report hydrostatic and chemical pressure effects on the transport properties of single- and poly-crystalline samples. The electrical resistivity p （T） is gradually enhanced by applying pressure over a wide temperature range from room temperature down to 25 mK. Two thermal activation gaps estimated from high- and low-temperature windows are found to increase with pressure. A flat p（T） observed at the lowest temperatures below 300 mK appears to be robust against both pressure and field. This feature as well as the increase of the energy gaps calls for more intensive investigations with respect to electron correlations and band topology.

关键词： CeRu4Sn6 Weyl semimetal heavy fermion hydrostatic pressure

ZmGRAS11,transactivated by Opaque2,positively regulates kernel size in maize

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Journal of Integrative Plant Biology 2021年第12期63卷 2031-2037页

作者： Ye Li shuai Ma Qianqian Zhao Di lv Baobao Wang Ke Xiao Jiameng Zhu Suzhen Li Wenzhu Yang Xiaoqing Liu Haiyang Wang Xiaojin Zhou Rumei Chen Crop Functional Genome Research Center Biotechnology Research InstituteChinese Academy of Agricultural SciencesBeijing 100081China Key Laboratory of Agricultural Products Chemical and Biological Processing Technology Zhejiang University of Science and TechnologyHangzhou 310023China Department of Applied Chemistry College of ScienceChina Agricultural UniversityBeijing 100193China National Engineering Laboratory of Crop Stress Resistance Breeding Anhui Agricultural UniversityHefei 230036China College of Life Sciences State Key Laboratory for Conservation and Utilization of Subtropical Agro-BioresourcesSouth China Agricultural UniversityGuangzhou 510642China

Although the genetic basis for endosperm development in maize(Zea mays)has been well studied,the mechanism for coordinating grain filling with increasing kernel size remains ***,we report that increased kernel size was selected during modern breeding and identify a novel DELLA-like transcriptional regulator,ZmGRAS11,which positively regulates kernel size and kernel weight in *** find that Opaque2,a core transcription factor for zein protein and starch accumulation,transactivates the expression of Zm *** data suggest that the Opaque2-Zm GRAS11 module mediates synergistic endosperm enlargement with grain filling.

关键词： DELLA-like endosperm kernel size maize Opaque2 seed weight

miR-137 inhibits melanoma cell proliferation through downregulation of GLO1

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Science China(Life Sciences) 2018年第5期61卷 541-549页

作者： Na lv shuai Hao Chonglin Luo Alia Abukiwan Ying Hao Fei Gai Weiwei Huang Lingyun Huang Xueyuan Xiao Stefan B.Eichmüller Dacheng He Key Laboratory of Cell Proliferation and Regulation of Ministry of Education Universities of the Confederated Institute for ProteomicsBeijing Normal University Beijing Engineering and Technology Research Center of Food Additives Beijing Technology and Business University Gene & Care Health Technologies Co. Ltd. GMP & T Cell Therapy Unit German Cancer Research Center (DKFZ) College of Sports Northwest Normal University

Late-stage melanoma is refractory to current therapies. MicroRNAs (miRNAs) can modulate many physiological and pathological processes of melanoma. Studies have demonstrated that miR-137 acts as a tumor suppressor by inhibiting the proliferation of melanoma cells through targeting multiple mRNAs. The glyoxalase system member glyoxalase 1 (GLO1) is the principal scavenging enzyme of methylglyoxal (MG), a toxic byproduct of glycolysis. Using 35S in vivo/vitro labelling analysis for dynamic proteomics (SiLAD), we found that miR-137 downregulated the expression of GLO1 in melanoma *** analysis predicted that GLO1 is a direct target of miR-137. This was validated by dual luciferase reporter *** RT-PCR (qRT-PCR) and western blot analysis indicated that miR-137 could decrease endogenous GLO1 ***, siRNA targeting of GLO1 mimicked inhibition of melanoma cell proliferation caused by miR-137 ***-expression of GLO1 was able to restore miR-137-mediated suppression of melanoma cell proliferation. Therefore, these results suggest that miR-137 inhibits the proliferation of melanoma cells by targeting GLO1.

关键词： melanoma miR-137 SiLAD GLO1 cell proliferation

[N^N^O]钴配合物催化丁二烯立体选择性聚合的研究

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高分子学报 2015年第12期25卷 1486-1492页

作者：吕帅介素云化学工程联合国家重点实验室浙江大学化学工程与生物工程学院杭州310027

合成并表征了一系列带有[2-（4,5-二苯基-2-咪唑基）-1-苯亚胺基]苯酚配体（[N^N^O]三齿配体）的二氯化钴配合物（1~4）,并研究了这些配合物对丁二烯溶液聚合的催化性能.研究结果表明,助催化剂的种类对丁二烯聚合的催化活性和产物性能... 详细信息

合成并表征了一系列带有[2-（4,5-二苯基-2-咪唑基）-1-苯亚胺基]苯酚配体（[N^N^O]三齿配体）的二氯化钴配合物（1~4）,并研究了这些配合物对丁二烯溶液聚合的催化性能.研究结果表明,助催化剂的种类对丁二烯聚合的催化活性和产物性能有显著的影响,倍半乙基氯化铝（EASC）为最佳的助催化剂.在EASC的活化作用下,该催化体系引发丁二烯单体聚合,15 min内丁二烯单体的转化率可达92.7%,产物聚丁二烯中顺式1,4-结构的含量高达97.4%.并详细研究了助催化剂的用量、聚合的温度、配体上不同取代基等对丁二烯聚合行为的影响,包括丁二烯单体的转化率、产物聚丁二烯的分子量与分子量分布及微观结构.通过凝胶渗透色谱法（GPC）对聚合产物的分子量及分子量分布进行了表征,核磁共振氢谱（1H-NMR）和碳谱（13CNMR）分析结果表明所得聚合物具有高的顺式1,4-结构含量（97%左右）.

关键词：钴倍半乙基氯化铝丁二烯聚合顺式含量

基于有限时间扰动观测器的无人水面艇精确航迹跟踪控制

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控制与决策 2019年第11期34卷 2491-2497页

作者：王宁吕帅林大连海事大学船舶电气工程学院

针对复杂航行环境下的无人水面艇系统,提出一种基于有限时间扰动观测器的无人水面艇精确航迹跟踪控制策略.该控制方法具有以下显著特点:能够精确补偿未知海洋干扰,可实现精确跟踪控制;相比传统的渐近收敛控制算法,有限时间稳定性确保跟... 详细信息

针对复杂航行环境下的无人水面艇系统,提出一种基于有限时间扰动观测器的无人水面艇精确航迹跟踪控制策略.该控制方法具有以下显著特点:能够精确补偿未知海洋干扰,可实现精确跟踪控制;相比传统的渐近收敛控制算法,有限时间稳定性确保跟踪控制系统具有更快的收敛速度和更强的扰动抑制能力;能够同时确保扰动观测误差和航迹跟踪误差在有限时间内精确收敛到零.仿真结果验证了所提出控制方法的有效性和优越性.

关键词：有限时间控制精确航迹跟踪有限时间扰动观测器无人水面艇