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高炉煤气中氢含量对炉料还原的影响

钢铁钒钛 2016年第2期37卷 102-107页

作者：李建鹏李福民喇校帅吕庆郄亚娜刘小杰教育部现代冶金技术重点实验室华北理工大学冶金与能源学院河北唐山063009 东北大学材料与冶金学院辽宁沈阳110004

研究不同H_2含量煤气条件下高炉炉料的还原过程,观察矿石微观结构及元素成分,结果表明:相同温度下,随着氢气含量增加矿石中铁元素聚集明显增加;随着还原气中氢气含量增加,矿石失重率、还原率、金属化率均升高。由于氢气含量的提高,间接... 详细信息

研究不同H_2含量煤气条件下高炉炉料的还原过程,观察矿石微观结构及元素成分,结果表明:相同温度下,随着氢气含量增加矿石中铁元素聚集明显增加;随着还原气中氢气含量增加,矿石失重率、还原率、金属化率均升高。由于氢气含量的提高,间接还原得到发展,可以有效降低直接还原度。但是氢气含量过高,则会发生非铁金属的还原,这可能导致能耗升高,煤气中的氢气含量应选择合适的值为15%左右。

关键词：高炉氢气含量炉料失重率还原率金属化率

A de novo assembled genome of the Tibetan Partridge (Perdix hodgsoniae) and its high-altitude adaptation

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Integrative Zoology 2023年第2期18卷 225-236页

作者： Xuejuan li Xiaoyang WANG Chao YANG liliang liN Hao YUAN fumin LEI Yuan HUANG College of life Sciences Shaanxi Normal UniversityXi’anChina School of Biological and Environmental Engeering Xi’an UniversityXi’anChina Shaanxi Institute of Zoology Xi’anChina Key Laboratory of the Zoological Systematics and Evolution Institute of Zoologythe Chinese Academy of SciencesBeijingChina

The Tibetan Partridge(Perdix hodgsoniae)is an endemic species distributed in high-altitude areas of 3600–5600 m on the Qinghai–Tibet *** explore how the species is adapted to the high elevation environment,we as-sembled a draft genome based on both the Illumina and PacBio sequencing platforms with its population genetics and genomics *** total,134.74 Gb short reads and 30.81 Gb long reads raw data were *** 1.05-Gb assembled genome had a contig N50 of 4.56 Mb,with 91.94%complete *** 17457 genes were annotated,and 11.35%of the genome was composed of repeat *** phylogenetic tree showed that *** was located at the basal position of the clade,including Golden Pheasant(Chrysolophus pictus),Common Pheasant(Phasianus colchicus),and Mikado Pheasant(Syrmaticus mikado).We found that 1014,2595,and 2732 of the 6641 one-to-one orthologous genes were under positive selection in ***,detected using PAML,BUSTED,and aBSREL programs,respectively,of which 965 genes were common under positive selec-tion with 3 different *** positively selected genes and immunity pathways relevant to high-altitude adaptation were *** family evolution showed that 99 gene families experienced signiﬁcant expansion events,while 6 gene families were under *** total number of olfactory receptor genes was relatively low in *** data provide an important resource for a further study on the evolutionary history of ***,which provides a new insight into its high-altitude adaptation mechanisms.

关键词： comparative genome genome assembly high-altitude adaptation Perdix hodgsoniae

Elucidating the effect of barium halide promoters on La_(2)O_(3)/CaO catalyst for oxidative coupling of methane

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Journal of Energy Chemistry 2022年第10期31卷 49-59,I0003页

作者： Yue Wang Xiao Yang fumin Yin Kai Zhang Hongfei Guo Guowei Wang Guiyuan Jiang Chunyi li Xiaolin Zhu State Key Laboratory of Heavy Oil Processing China University of PetroleumQingdao 266580ShandongChina State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China

The industrialization of oxidative coupling of methane(OCM)is restricted by the low once through yield of C_(2)***,the halogen-assisted OCM process has been attempted to overcome this issue,but the reaction stability was poor due to the rapid loss of gas-phase halides or molten alkali *** this work,the barium salts,particularly barium halides(BaCl_(2)and BaF_(2)),were demonstrated to be efficient promoters to improve the OCM reactivity of La_(2)O_(3)/CaO catalyst by increasing both C_(2)selectivity and C_(2)H_(4)/C_(2)H_(6)ratio,and simultaneously achieving outstanding reaction *** promoting mechanism can be understood in two *** the one hand,the introduction of barium salts increased the amount of surface electrophilic oxygen species,serving as the alkaline active sites for selective methane *** the other hand,the barium halide additives induced the in-situ formation of methyl halide intermediates facilitating C_(2)H_(6)dehydrogenation,and their intimate contact with catalyst substrate restricted the rapid halogen loss and thereby improved the catalytic *** work not only provides a class of efficient OCM catalyst,but also offers a highly stable halogen-assisted reaction strategy.

关键词： Oxidative coupling of methane La_(2)O_(3)/CaO catalyst Barium halide promoters Active oxygen species Methyl halide intermediates

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澳洲坚果内源激素含量与其生理落果的关系

中国南方果树 2024年第3期53卷 96-101页

作者：李穆黄思婕谭秦亮黄锦媛赵渊巫辅民曾黎明广西农业科学院广西亚热带作物研究所南宁530001

为探究澳洲坚果早期生理落果机制,采用高效液相色谱法和高效气相色谱法测定澳洲坚果早期生理落果期间正常果和脱落果果柄中赤霉素(GA 3)、生长素(吲哚-3-乙酸IAA)、细胞分裂素(CTK)、脱落酸(ABA)、油菜素内酯(BR)含量以及乙烯(ETH)释放... 详细信息

为探究澳洲坚果早期生理落果机制,采用高效液相色谱法和高效气相色谱法测定澳洲坚果早期生理落果期间正常果和脱落果果柄中赤霉素(GA 3)、生长素(吲哚-3-乙酸IAA)、细胞分裂素(CTK)、脱落酸(ABA)、油菜素内酯(BR)含量以及乙烯(ETH)释放量,并记录落果情况。结果表明,澳洲坚果早期生理落果期间(盛花后30~50 d),落果率为73.76%,落果率与正常果果柄中ABA含量呈显著正相关,与IAA含量呈极显著负相关;正常果果柄中GA 3、IAA和BR平均含量整体高于脱落果,而CTK、ABA平均含量和ETH平均释放量整体低于脱落果;正常果果柄中促进生长激素与抑制生长激素含量比率[IAA/ABA、GA 3/ABA、CTK/ABA、(IAA+GA 3+CTK)/ABA]整体大于脱落果。推测澳洲坚果果柄中低浓度IAA和高浓度ABA是其早期生理落果的主要原因,促进生长激素与抑制生长激素含量比对澳洲坚果早期生理落果有调控作用。

关键词：澳洲坚果果柄内源激素生理落果吲哚-3-乙酸脱落酸

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基于深度学习的煤矸石计量研究

陕西煤炭 2024年第3期43卷 63-67页

作者：秦雷张富民李亚威田亮亮济宁市金桥煤矿山东济宁272200 中信重工开诚智能装备有限公司河北唐山063020

针对在煤矿皮带输送机上难以对煤矸石实时计量,结合图像处理技术和深度学习技术,提出基于Yolact算法的皮带矸石动态计量方法。首先对图像进行预处理,包括滤波、光照增强;然后采用轻量级的残差结构作为Yolact算法的特征提取主干,对皮带... 详细信息

针对在煤矿皮带输送机上难以对煤矸石实时计量,结合图像处理技术和深度学习技术,提出基于Yolact算法的皮带矸石动态计量方法。首先对图像进行预处理,包括滤波、光照增强;然后采用轻量级的残差结构作为Yolact算法的特征提取主干,对皮带矸石进行实时的实例分割;最后二值化矸石分割结果,引入开源跨平台计算机视觉库OpenCV,利用像素阈值计算矸石的具体数量和面积,通过搭建矿用皮带矸石分拣装置,验证矸石计量算法的可行性。结果表明,皮带矸石动态计量方法能够有效学习矸石特征,网络计量皮带中矸石面积和位置信息的准确率为94.66%,网络的检测速度为30.72 FPS。该方法能对煤矿皮带中的矸石进行有效计量。

关键词：煤矸石计量实例分割智能设备卷积神经网络

添加剂对含钛高炉渣黏度及钙钛矿相析出行为的影响

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钢铁钒钛 2016年第6期37卷 91-98页

作者：朱二涛卢建光李福民吕庆郄亚娜华北理工大学冶金与能源学院教育部现代冶金技术重点实验室河北唐山063009 东北大学材料与冶金学院辽宁沈阳110819

针对承钢含钛高炉渣黏度大、渣铁分离较差、硬度较高难磨等问题,开展了降低炉渣黏度和硬度的研究。结果表明:随着CaF2添加量的增加,炉渣黏度由1.632 Pa·s降到0.880 Pa·s;随着除尘灰添加量的增加,炉渣黏度先由1.632 Pa·s降到1.104 Pa... 详细信息

针对承钢含钛高炉渣黏度大、渣铁分离较差、硬度较高难磨等问题,开展了降低炉渣黏度和硬度的研究。结果表明:随着CaF2添加量的增加,炉渣黏度由1.632 Pa·s降到0.880 Pa·s;随着除尘灰添加量的增加,炉渣黏度先由1.632 Pa·s降到1.104 Pa·s,再由1.104 Pa·s升到1.296 Pa·s;随着煤粉灰添加量的增加,炉渣黏度先由1.632 Pa·s降到1.024 Pa·s,再由1.024 Pa·s升到1.664 Pa·s;含钛高炉渣水冷、急冷、缓冷三种冷却方式中,随着冷却速度的变慢,钙钛矿析出量成增加趋势;含钛高炉渣水冷状态下,原渣和添加2%煤粉灰,钙钛矿析出区域较少,添加CaF_2的炉渣钙钛矿析出区域较大;含钛高炉渣急冷状态下,随着CaF_2添加量增加,钙钛矿析出量呈现变多长大趋势,相反添加2%煤粉灰,钙钛矿析出量反而减少;含钛高炉渣缓冷状态下,随着CaF_2添加量增加,钙钛矿析出量呈现变多长大趋势,相反添加2%煤粉灰,较原渣而言钙钛矿析出量无明显变化。

关键词：含钛高炉渣钙钛矿析出 CaF2 煤粉灰黏度冷却方式

Comparative transcriptomic and metabolomic analysis reveals pectoralis highland adaptation across altitudinal songbirds

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Integrative Zoology 2022年第6期17卷 1162-1178页

作者： Ying XIONG Yan HAO Yalin CHENG liqing FAN Gang SONG Dongming li Yanhua QU fumin LEI Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina Key Laboratory of Forest Ecology in Tibet Plateau of Ministry of Education Institute of Tibet Plateau EcologyTibet Agriculture&Animal Husbandry UniversityNyingchiChina Key Laboratory of Animal Physiology Biochemistry and Molecular Biology of Hebei ProvinceCollege of Life SciencesHebei Normal UniversityShijiazhuangChina Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunmingChina

Pectoralis phenotypic variation plays a fundamental role in locomotion and thermogenesis in highland ***-ever,its regulatory and metabolic mechanisms remain enigmatic to ***,we integrated phenomic,tran-scriptomic,and metabolomic approaches to determine muscle variation and its underpinning mechanisms across altitudinal *** conﬁrmed that all highland birds had considerable increases in muscle oxidative capacity,capillarity,and mitochondrial abundance in our ***,transcriptomic analyses found that differentially expressed genes in phenotype-associated modules enriched for blood vessel,muscle structure development,and mitochondrial *** similar traits and functional enrichments across highland birds,different mechanisms drove their occurrence in high-altitude tree sparrow and 2 snowﬁ***,a metabolic feature shared by all the 3 highland birds is the improvement in insulin sensitivity and glucose utilization through activating insulin signaling pathway,which is vital to increase muscle oxidative capacity and maintain metabolic ***,fatty acid biosynthesis and oxidation are enhanced in only 2 snowﬁnches which had a long evolutionary history on the high plateau,also differing from ketone body metabolism in recently introduced colonizer of the tree sparrow of the high *** study represents a vital contribution to reveal the regulatory and metabolic basis of pectoralis variation across altitudinal songbirds.

关键词： altitude gas chromatography–mass spectrometry hypoxia pectoralis RNA–seq