Results 91 to 100 of about 1,436,165 (146)

半焦基催化剂裂解煤热解产物提高油气品质

, 2012
利用上段热解下段催化的两段固定床反应器,针对府谷煤研究了半焦和半焦负载Co催化剂对煤热解产物的催化裂解效果。结果表明,半焦和半焦负载钴对热解产物催化裂解后,热解气收率增加,焦油收率降低,但焦油中沸点低于360℃的轻质组分含量提高,轻质焦油收率基本保持不变或略有增加。与煤在600℃直接热解相比,在热解和催化温度均为600℃,采用煤样质量20%的半焦为催化剂时焦油中轻质组分质量含量提高了约25%,轻质组分收率基本不变,热解气体积收率增加了31.2%;在热解温度600℃,催化温度500℃时,采用煤样质量5 ...
许光文, 韩江则, 高士秋, 陆江银, 王兴栋   +4 more
core  

高能重轻子对生成双光子角分布函数链图特性

四川大学学报. 自然科学版, 2011
本文采用QED轻子扩充模型,应用量子场论中的微扰理论和重整化方法,研究高能正、反重轻子对碰撞生成双光子的反应问题,同时针对反应内部较为复杂的一种电磁相互作用过程作了理论分析与探讨,并严格计算出正、反重轻子对在重整化无穷高阶链图传播下生成双光子的反应微分截面,获得了精确理论结果.进而将该结果与树图传播下正、反重轻子对生成双光子的微分截面作了对比分析,获得有关辐射修正的重要信息.
陈珊珊, 方祯云, 钟涛, 唐云青, 涂卫星   +4 more
doaj  

[An lightweight algorithm for multi-dimensional optimization of intelligent detection of dental abnormalities on panoramic oral X-ray images]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Zhao T, Ni M, Xia S, Jiao Y, He Y.
europepmc   +1 more source

OnceSAXParser:一种高效轻量的XML解析器

, 2006
通过优化XML词法和语法处理以及构造轻量级体系结构,实现了支持SAX的高效XML解析器 OnceSAXParser。文中还将OnceSAXParser与目前最流行的XML解析器Xerces进行了对比分析和性能测试,结果显示OnceSAXParser的性能比Xerces平均提高了27 ...
金蓓弘, 田四化, 曹冬磊
core   +1 more source

Improved lightweight convolutional neural network models for the detection and evaluation of Fusarium head blight in wheat. [PDF]

J Zhejiang Univ Sci B
Zhang W, Ren Y, Guo Z, Li H, Zhang M, Liu J, Qiu R.   +6 more
europepmc   +1 more source

[Study on lightweight plasma recognition algorithm based on depth image perception]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Zhang H, Sun Y, Jiang H, Hu J, Luo G, Li D, Cao W, Qiu X.   +7 more
europepmc   +1 more source

[Cardiac magnetic resonance image segmentation based on lightweight network and knowledge distillation strategy]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Liu Z, Wang N, Zhang C, Wei G.
europepmc   +1 more source

[Colon polyp detection based on multi-scale and multi-level feature fusion and lightweight convolutional neural network]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Li Y, Zhao J, Yu R, Liu H, Liang S, Gu Y.   +5 more
europepmc   +1 more source

[Brain magnetic resonance image registration based on parallel lightweight convolution and multi-scale fusion]. [PDF]

Sheng Wu Yi Xue Gong Cheng Xue Za Zhi
Shen Y, Yan Y, Song J, Liu G, Xu J, Wei Z.   +5 more
europepmc   +1 more source

[<i>Tongqiao Huoxue</i> Decoction-medicated rat cerebrospinal fluid attenuates oxygen and glucose deprivation-induced neuronal injury by suppressing fibrinogen-mediated NLRP3 inflammasome activation]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Wang Y, Huang P, Peng Y, Sun H, Wang N, Wang C.   +5 more
europepmc   +1 more source