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Particle auto-statistics and measurement of the spherical powder for 3D printing basing on deep learning

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红外与激光工程 2021年

作者： WANG YiChao ZHANG Zheng HUANG HaiZhou lin wenxiong Fujian Institute of Research on the Structure of Matter， Chinese Academy of Sciences University of the Chinese Academy of Sciences

We present a particle auto-statistics and measurement system on microscopic imaging of the spherical powder， basing on one deep learning framework—Mask R-CNN. The proposed model can efficiently detect particles in the microscopy image even under the existence of many occlusion particles， and provide statistical results of particle size distribution， degree of sphericity and spheroidization ratio， simultaneously. Compared with traditional image segmentation method， the particle recognition accuracy was improved by 23.6%. Moreover， smaller particles that stuck on big particles can be recognized， according to the comparison in particle size distribution between our method and the laser diffraction technique.

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Rice allelopathy and its properties of molecular ecology

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Frontiers in Biology 2010年第3期5卷 255-262页

作者： wenxiong lin Changxun FANG Ting CHEN Ruiyu lin Jun XIONG Haibin WANG Key Laboratory of Biopesticide and Chemical Biology Ministry of EducationFuzhou 350002China Agroecological Institute/School of Life Sciences Fujian Agriculture and Forestry UniversityFuzhou 350002China

Crop allelopathy is a promising and environmentally friendly method in weed control;however,the inducible genetic trait for allelopathy in the suppression of weeds needs to be overcome for practical *** study needs to be directed to this end to elucidate the molecular genetics and its physiologic *** this paper,the authors review recent advances in the investigation of rice allelopathy and its molecular regulatory mechanism,especially in responses to stressful conditions including biotic and abiotic factors in *** studies show that rice allelopathy could be enhanced when the rice accession was exposed to stressful conditions,and further analysis by the transcriptomics and proteomics approaches conducted in our laboratory indicated that the increase in allelopathic potential of rice,when exposed to the stresses,was attributed to increased expression level of genes involved in phenolic synthetic *** increasing phenolic compounds have been confirmed as the main allelochemicals and they jointly act to suppress the target,especially in responses to stressful condition,but it seems to be the primary effect in phenolic *** still wonder how the exudates from rice root,which were released into rhizosphere soil,are transformed by soil microorganism to produce the higher secondary effect of phenolic allelopathy in the suppression of ***,the authors suggest that rhizosphere biologic properties of allelopathy in rice and its mechanism are being the key research areas in the world now,and systems biology and its approaches,such as metagenomics and metaproteomics,would be helpful to reveal the process and its molecular ecological mechanism regarding rhizospheric biology of rice allelopathy.

关键词： Allelopathy rice molecular mechanism stress

The underlying mechanism of variety–water–nitrogen–stubble damage interactions on yield formation in ratoon rice with low stubble height under mechanized harvesting

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Journal of Integrative Agriculture 2024年第3期23卷 806-823页

作者： Jingnan Zou Ziqin Pang Zhou Li Chunlin Guo Hongmei lin Zheng Li Hongfei Chen Jinwen Huang Ting Chen Hailong Xu Bin Qin Puleng Letuma Weiwei lin wenxiong lin College of Life Sciences Fujian Agriculture and Forestry University(FAFU)/Fujian Key Laboratory for Agroecological Processes and Safety MonitoringFuzhou 350002China College of Agriculture FAFU/Fujian Key Laboratory for Crop Physiology and Molecular EcologyFuzhou 350002China Institute of Oceanography College of Geography and OceanographyMinjiang UniversityFuzhou 350108China Crop Science Department The National University of LesothoRoma 00100Lesotho The Agricultural Extension Station of Pucheng County Nanping 353400China

Agronomic measures are the key to promote the sustainable development of ratoon rice by reducing the damage from mechanical crushing to the residual stubble of the main crop, thereby mitigating the impact on axillary bud sprouting and yield formation in ratoon rice. This study used widely recommended conventional rice Jiafuzhan and hybrid rice Yongyou 2640 as the test materials to conduct a four-factor block design field experiment in a greenhouse of the experimental farm of Fujian Agricultural and Forestry University, China from 2018 to *** treatments included fertilization and no fertilization, alternate wetting and drying irrigation and continuous water flooding irrigation, and plots with and without artificial crushing damage on the rice stubble. At the same time, a 13C stable isotope in-situ detection technology was used to fertilize the pot experiment. The results showed significant interactions among varieties, water management, nitrogen application and stubble *** to the long-term water flooding treatment, the treatment with sequential application of nitrogen fertilizer coupled with moderate field drought for root-vigor and tiller promotion before and after harvesting of the main crop, significantly improved the effective tillers from low position nodes. This in turn increased the effective panicles per plant and grains per panicle by reducing the influence of artificial crushing damage on rice stubble and achieving a high yield of the regenerated rice. Furthermore, the partitioning of 13C assimilates to the residual stubble and its axillary buds were significantly improved at the mature stage of the main crop, while the translocation rate to roots and rhizosphere soil was reduced at the later growth stage of ratooning season rice. This was triggered by the metabolism of hormones and polyamines at the stem base regulated by the interaction of water and fertilizer at this time. We therefore suggest that to achieve a high yield of ratoon rice

关键词： mechanized harvesting ratoon rice rice stubble yield attributes

Validation of spectrum method for improving efficiency of continuous-wave ＆ Q-switched Tm-doped yttrium aluminum garnet laser

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Science China(Physics,Mechanics & Astronomy) 2018年第3期61卷 77-80页

作者： HaiZhou Huang Pan Gao HuaGang Liu Jian-Hong Huang Juan Wang KaiMing Ruan Wen Weng Hui Zheng ZiXiong lin ShuTao Dai Jing Deng wenxiong lin Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China University of Chinese Academy of Sciences Beijing 100049 China

Tm3＋-doped 2-μm lasers benefit many applications such as atmospheric sensing, medical treatment, and spec- troscopy [1-3]. Therefore, in the past two decades, both continuous-wave （CW） and pulse operations have be... 详细信息

关键词：钇铝石榴石激光波浪谱方法切换 Tm 医疗纤维

0.5981μm Sum Frequency Mixing in KTP Crystal

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Chinese Physics Letters 1991年第4期8卷 215-217页

作者： SHEN Hongyuan ZHOU Yuping lin wenxiong ZENG Ruirong YU Guifang HUANG Chenghui ZENG Zhengdong ZHANG Weijia JIA Shouquan JIANG Peizhi XIAO Chaoliang Fujian Institute of Research on the Structure of Matter Academia SinicaFuzhou 350002 Institute of Physics Academia SinicaBeijing 100080

Based on accurate values of refractive indices,the phase matching angles(θ_(m))and effective nonlinear coeficients(d_(eff))for type I and I I sum frequency mixing of 1.0795 and 1.3414μm radiations were calculated in KTP *** optimum phase matching conditions are thatθm=75.74o in the XZ plane(Ф=0)and deff=17.42 × 10^(-9) *** calculated results agree well with the experimental ***,the cw 0.5981μm sum frequency radiation was achieved in KTP crystal using a 1.0795 and 1.3414μm double-wavelength Nd:YAP cw laser.

关键词： Nd:YAP Crystal matching

Passively Q-switched Tm/Ho composite laser

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Opto-Electronic Advances 2020年第4期3卷 14-19页

作者： Haizhou Huang Jinhui Li Jing Deng Yan Ge Huagang Liu Jianhong Huang Wen Weng wenxiong lin Key Laboratory of Optoelectronic Materials Chemistry and Physics Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100049China Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3117576Singapore.

We explored Q-switching mechanism for the newly proposed Tm/Ho composite laser via developing a hybrid resonator for separating the intra-cavity Tm laser modulated by the saturable absorber(SA).With a Cr:ZnSe SA,successful passively Q-switching process with the maximum average output power of 474 mW and the shortest pulse width of 145 ns were obtained at the pulse repetition frequency of 7.14 kHz,where dual wavelength oscillation in both 2090 nm and 2097 nm was *** work provides an effective way for a direct laser diode(LD)pumped Q-switched Ho laser,which is compact and ***,the current SA could be replaced by the 2D materials with broadband saturable absorption such as topological insulators or transition-metal dichalcogenides for seeking novel PQS lasers.

关键词： Ho laser Tm laser Tm/Ho composite passively Q-switched Cr:ZnSe

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中国农业的生态化转型与发展生态农业新视野

中国生态农业学报（中英文） 2019年第2期27卷 169-176页

作者：林文雄陈婷福建农林大学农业生态研究所/福建省农业生态过程与安全监控重点实验室福州350002

本研究从我国农业发展的现实状况出发,分析了我国农业发展成就与存在的问题,并在充分吸收国外农业发展的成功经验与教训基础上,提出了发展我国农业生态化转型的路径选择与发展现代生态农业的新视野。讨论了现代农业生态学的主流思想及... 详细信息

本研究从我国农业发展的现实状况出发,分析了我国农业发展成就与存在的问题,并在充分吸收国外农业发展的成功经验与教训基础上,提出了发展我国农业生态化转型的路径选择与发展现代生态农业的新视野。讨论了现代农业生态学的主流思想及其在现代生态农业实践中的应用,并强调应加强协作攻关,探索一套切实可行的环境友好型和资源节约型的技术体系用于生态农业建设与实践。特别强调在推进乡村振兴,促进生态产业化向产业生态化发展的进程中,应着力研究并建立适合各地实际的生态文明制度,保证乡村生态资源有效保护,促进生态产品价值的有效转化,为乡村产业兴旺,农民生活富裕提供良好环境和经济支撑。

关键词：农业生态化转型生态农业新视野生态产业化产业生态化乡村振兴

The heterotic effects on dry matter production and grain yield formation in hybrid rice

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Chinese Rice Research Newsletter 1997年第2期5卷 10-11页

作者： lin wenxiong and LIANG Yiyuan, Agro Dept, Fujian Agri Univ, Fuzhou 350002, China

We studied the characteristics of dry matterproduction and matter partitioning in hybridrice and the relationships of them with heterot-ic effect in 1993. Two popular indica hybrids, Shanyou 63(Zhenshan 97A/Minhui 63 ... 详细信息

关键词： The heterotic effects on dry matter production and grain yield formation in hybrid rice RGR line

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论大学生自主选择精神的培养

江苏高教 2010年第3期 123-125页

作者：林文雄福建农林大学党委办公室福州350002

从人的"存在本质"和高等教育的创新性本质出发,针对原有教育模式中大学生主体地位缺失现状,思考高等教育如何在主动适应时代发展基础上培养大学生自主选择精神,为创新型人才的培养、创新型国家的建立探讨一新的理论模式,同时也努力为教... 详细信息

从人的"存在本质"和高等教育的创新性本质出发,针对原有教育模式中大学生主体地位缺失现状,思考高等教育如何在主动适应时代发展基础上培养大学生自主选择精神,为创新型人才的培养、创新型国家的建立探讨一新的理论模式,同时也努力为教育教学实践和改革提供一种新的视野和思维角度。

关键词：教育改革大学生自主选择精神