检索结果-南通市图书馆

Journal of Forestry Research 2017年第5期28卷 1007-1018页

作者： do-Hyun Kim Sung-Jun Na Sea-Hyun Kim Ewane Basil Ewane Dae-Bong Kang do-hyung lee Department of Forest Resources Yeungnam University Department of Forest Genetic Resources National Institute of Forest Science

We estimated the growth volume of artificially reforested Pinus densiflora in a post-fire area on three different contour conditions by comparing and analyzing the vertical and horizontal distributions of below-ground roots on each contour. The main roots at the south-facing slope (SS) developed in a long and straight form, and those on the north-facing slope (NS) in a twisted form. The side roots developed more than the main roots on the Ridge. The depth of taproots decreased in the following order: SS > NS > Ridge. The roots on the SS developed in a pile-form root structure whereas those in the Ridge and NS developed concentrically near the root collar. The amount of root development decreased in the following order: SS > NS > Ridge. The ratio of fine roots from the whole-root development decreased in the following order: Ridge > SS > NS. These results can guide considerations of growth differences according to the planting contour conditions for future establishment of P. densiflora artificial plantations.

关键词： Pinus densiflora Growth characteristics Contour conditions Post-fire plantation Wildfire Restoration Soil depth

A hybrid swarm population of Pinus densiflora × P. sylvestris inferred from sequence analysis of chloroplast DNA and morphological characters

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2013年第1期24卷 53-60页

作者： Young Hee Joung Jerry L. Hill Jung Oh Hyun Ding Mu Juchun Luo do hyung lee Takayuki Kawahara Jeung Keun Suh Mark S. Roh Chonnam National University School of Biological Sciences & TechnologyGwangjuKorea US Department of Agriculture Forest ServiceDorena Genetic Resource CenterWashington State UniversityPullmanWA99164USA Seoul National University College of Agriculture and Life SciencesSeoulKorea Chinese Academy of Agricultural Science Beijing Forestry University College of Resources and Environment Yeungnam University College of Natural ResourcesDepartment of Forest ResourcesGyeongsanKorea Hokkaido Research Center Forestry and Forest Products Research InstituteSapporoJapan. Dankook University School of Bio-Resource ScienceDepartment of Environment HorticultureCheonanKorea. US Department of Agriculture Agricultural Research ServiceUS National ArboretumFloral and Nursery Plants Research UnitBeltsvilleMD 20705USA.

To confirm a hybrid swarm population of Pinus densiflora × P. sylvestris in Jilin, China, we used needles and seeds from P. densiflora, P. sylvestris, and P. densiflora × P. sylvestris collected from natural stands or experimental stations to study whether shoot apex morphology of 4-year old seedlings can be correlated with the sequence of a chloroplast DNA simple sequence repeat marker （cpDNA SSRs）. Total genomic DNA was extracted and subjected to sequence analysis of the pine cpDNA SSR marker Pt15169. Results show that morphological characters from 4-year old seedlings did not correlate with sequence variants of this marker. Marker haplotypes from all P. sylvestris trees had a CTAT element that was absent from all sampled P. densiflora trees. However, both haplotype classes involving this insertion/deletion element were found in a P. densiflora × P. sylvestris population and its seedling progeny. It was concluded that the P. densiflora × P. sylvestris accessions sampled from Jilin, China resulted from bi-directional crosses, as evidenced by both species’ cpDNA haplotypes within the hybrid swarm population.

关键词： P. sylvestris var. sylvestriformis chloroplast DNA simplesequence repeat sequencing hybrid swarm population

Enhancement of motor functional recovery in thoracic spinal cord injury: voluntary wheel running versus forced treadmill exercise

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第3期20卷 836-844页

作者： do-Hun lee Dan Cao Younghye Moon Chen Chen Nai-Kui Liu Xiao-Ming Xu Wei Wu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research InstituteIndiana University School of MedicineIndianapolisINUSA Department of Neurological Surgery Indiana University School of MedicineIndianapolisINUSA Department of Neuroscience Baylor College of MedicineHoustonTXUSA

Spinal cord injury necessitates effective rehabilitation strategies, with exercise therapies showing promise in promoting recovery. This study investigated the impact of rehabilitation exercise on functional recovery and morphological changes following thoracic contusive spinal cord injury. After a 7-day recovery period after spinal cord injury, mice were assigned to either a trained group(10 weeks of voluntary running wheel or forced treadmill exercise) or an untrained group. Bi-weekly assessments revealed that the exercise-trained group, particularly the voluntary wheel exercise subgroup, displayed significantly improved locomotor recovery, more plasticity of dopaminergic and serotonin modulation compared with the untrained group. Additionally, exercise interventions led to gait pattern restoration and enhanced transcranial magnetic motor-evoked potentials. Despite consistent injury areas across groups, exercise training promoted terminal innervation of descending axons. In summary, voluntary wheel exercise shows promise for enhancing outcomes after thoracic contusive spinal cord injury, emphasizing the role of exercise modality in promoting recovery and morphological changes in spinal cord injuries. Our findings will influence future strategies for rehabilitation exercises, restoring functional movement after spinal cord injury.

关键词： behavioral assessment motor function neural plasticity running wheel exercise spinal cord injury treadmill exercise voluntary exercise

在线全文

学校读者我要写书评

暂无评论

用于DWDM超远程传输系统的光纤特性研究

用于DWDM超远程传输系统的光纤特性研究

Biomass growth characteristics of 13-year-old Pinus densiflora *** *** a post-fire plantation on different contour conditions in Samcheuk,Korea

中国通信学会2003年光缆电缆学术年会

作者： Yun-Geun Jang, Jin-Seong Yang, do-hyung lee, Ju-Chang Han, Sang-Ho Cha Mun-Hyun do, Yun-Chur Chung, Hwan-Seok Chung

＜正＞ 1 引言自20世纪90年代以来,传输速率每年都在以极快的速度增长。在探讨传输速率的问题上,作为传输线的光纤总是其中必须研究的一个关键技术。标准单模光纤的传输速率通常为2.5Gb/s,通过优化设计最高仅可达到10Gb/s,因而,它将不...

＜正＞ 1 引言自20世纪90年代以来,传输速率每年都在以极快的速度增长。在探讨传输速率的问题上,作为传输线的光纤总是其中必须研究的一个关键技术。标准单模光纤的传输速率通常为2.5Gb/s,通过优化设计最高仅可达到10Gb/s,因而,它将不再适合用于传输速率为40Gb/s的系统。传统的非零色散位移光纤（NZ-DSF）由于其较低的色散值和位于1530nm附近的零色散波长使得它不宜使用在宽带以及DWDM系统中。尽管DWDM系统在C波段上仍使用传统的NZ-DSF光纤,但是它的结构过于复杂,几乎都需包含一个凹陷型包层来接续原有光纤。本文将主要介绍最佳色散特性以及展示经过优化的新型高速光纤的性能。同时这篇论文也适合对光纤有研究兴趣的系统工程师作为参考。

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Mountain Science 2016年第7期13卷 1238-1244页

作者： lee Ju-Hyoung lee do-hyung Kim do-Hyun Park Jin-Hwa KimJae-Hee Department of Forest Resources Yeungnam UniversityGyeongsan 712-749Republic of Korea Useful Plant Resources Center Korea National ArboretumYangpgeong-gun 12519Republic of Korea Korea Forest Welfare Institute Therapy-ro 209Bonghyeon-myeonYeongju-siGyeongsangbuk-doRepublic of Korea Department of forest genetic resources National Institute of Forest Science57HoegiroDongdaemun-guSeoul 02455Republic of Korea

We used preliminary data to estimate the growth volume of artificially reforested Pinus densiflora in a post-fire area on three different contour conditions. We compared the growth of P. densiflora on a south-facing slope(Ssth), north-facing slope(Snth) and ridge area(Ridge), using 7 trees selected from each stand aspect. The tree height, diameter and growth volume were measured and the dry weight of each plant part were compared and analyzed. The results revealed that the total dry weight was highest on Ssth(5992.3 g), followed by Snth(4833.2 g) and lowest on Ridge(3160.1 g). The height growth was highest on Snth(285.8 cm), followed by Ssth(274.5 cm) and lowest on Ridge(211.5 cm). The diameter growth was greatest on Ssth(7.37 cm), followed by Snth(7.10 cm) and lowest on Ridge(5.72 cm). The volume growth was highest on Ssth(4257.7 cm3), followed by Snth(3750.7 cm3) and lowest on Ridge(2093.7 cm3). Therefore, we should consider and include the concept of slope orientation together with differences in habitat environments in afforestation projects when creating artificial forests with P. densiflora. These study results can serve as important preliminary data for future establishment of artificial forest of P. densiflora in a post-fire plantation.

关键词： Pinus densiflora Growth characteristics Contour conditions Planted stand Post-fire plantation

PGLYRP1 protein as a novel mediator of cellular dialogue in neuroinflammation

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第7期20卷 1993-1994页

作者： Anup Bhusal Won-Ha lee Kyoungho Suk Department of Pharmacology School of MedicineKyungpook National UniversityDaeguRepublic of Korea BK21 Plus KNU Biomedical Convergence Program Department of Biomedical ScienceSchool of MedicineKyungpook National UniversityDaeguRepublic of Korea School of Life Sciences BK21 plus KNU Creative BioResearch GroupKyungpook National UniversityDaeguRepublic of Korea Brain Science and Engineering Institute Kyungpook National UniversityDaeguRepublic of Korea

Neuroinflammation has been identified as a crucial element in several neurological disorders. Glial cells play a critical role in directing neuroinflammation, both in deleterious and beneficial ways.

关键词： inflammation considerably

Single-cell and spatial omics:exploring hypothalamic heterogeneity

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第6期20卷 1525-1540页

作者： Muhammad Junaid Eun Jeong lee Su Bin Lim Department of Biochemistry&Molecular Biology Ajou University School of MedicineSuwonSouth Korea Department of Biomedical Sciences Graduate School of Ajou UniversitySuwonSouth Korea Department of Brain Science Ajou University School of MedicineSuwonSouth Korea

Elucidating the complex dynamic cellular organization in the hypothalamus is critical for understanding its role in coordinating fundamental body functions. Over the past decade, single-cell and spatial omics technologies have significantly evolved, overcoming initial technical challenges in capturing and analyzing individual cells. These high-throughput omics technologies now offer a remarkable opportunity to comprehend the complex spatiotemporal patterns of transcriptional diversity and cell-type characteristics across the entire hypothalamus. Current single-cell and single-nucleus RNA sequencing methods comprehensively quantify gene expression by exploring distinct phenotypes across various subregions of the hypothalamus. However, single-cell/single-nucleus RNA sequencing requires isolating the cell/nuclei from the tissue, potentially resulting in the loss of spatial information concerning neuronal networks. Spatial transcriptomics methods, by bypassing the cell dissociation, can elucidate the intricate spatial organization of neural networks through their imaging and sequencing technologies. In this review, we highlight the applicative value of single-cell and spatial transcriptomics in exploring the complex molecular-genetic diversity of hypothalamic cell types, driven by recent high-throughput achievements.

关键词： cellular diversity hypothalamus multi-omics single-cell transcriptomics spatial transcriptomics

Optimization of an Artificial Intelligence Database and Camera Installation for Recognition of Risky Passenger Behavior in Railway Vehicles

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2025年第1期82卷 1277-1293页

作者： Min-kyeong Kim Yeong Geol lee Won-Hee Park Su-hwan Yun Tae-Soon Kwon Duckhee lee Railroad Test&Certification Division Korea Railroad Research Institute(KRRI)Cheoldo BangmulgwanroUiwang-si16105Republic of Korea Railroad Safety Division Korea Railroad Research Institute(KRRI)Cheoldo BangmulgwanroUiwang-si16105Republic of Korea

Urban railways are vital means of public transportation in *** than 30%of metropolitan residents use the railways,and this proportion is expected to *** enhance safety,the government has mandated the installation of closed-circuit televisions in all carriages by ***,cameras still monitored *** address this limitation,we developed a dataset of risk factors and a smart detection system that enables an immediate response to any abnormal behavior and intensive monitoring *** created an innovative learning dataset that takes into account seven unique risk factors specific to Korean railway *** data collection was conducted across the Shinbundang Line of the Incheon Transportation Corporation,and the Ui-Shinseol *** observed several behavioral characteristics and assigned unique annotations to *** also considered carriage *** performance was evaluated by camera placement and *** the camera installation plan was *** dataset will find immediate applications in domestic railway *** artificial intelligence algorithms will be verified shortly.

关键词： AI railway vehicle risk factor smart detection AI training data

Tailoring Light–Matter Interactions in Overcoupled Resonator for Biomolecule Recognition and Detection

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第1期17卷 262-280页

作者： dongxiao Li Hong Zhou Zhihao Ren Cheng Xu Chengkuo lee Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Center for Intelligent Sensors and MEMS(CISM) National University of SingaporeSingapore 117608Singapore

Plasmonic nanoantennas provide unique opportunities for precise control of light–matter coupling in surface-enhanced infrared absorption(SEIRA)spectroscopy,but most of the resonant systems realized so far suffer from the obstacles of low sensitivity,narrow bandwidth,and asymmetric Fano resonance ***,we demonstrated an overcoupled resonator with a high plasmon-molecule coupling coefficient(μ)(OC-Hμresonator)by precisely controlling the radiation loss channel,the resonator-oscillator coupling channel,and the frequency detuning *** observed a strong dependence of the sensing performance on the coupling state,and demonstrated that OC-Hμresonator has excellent sensing properties of ultra-sensitive(7.25%nm^(−1)),ultra-broadband(3–10μm),and immune asymmetric Fano *** characteristics represent a breakthrough in SEIRA technology and lay the foundation for specific recognition of biomolecules,trace detection,and protein secondary structure analysis using a single array(array size is 100×100μm^(2)).In addition,with the assistance of machine learning,mixture classification,concentration prediction and spectral reconstruction were achieved with the highest accuracy of 100%.Finally,we demonstrated the potential of OC-Hμresonator for SARS-CoV-2 *** findings will promote the wider application of SEIRA technology,while providing new ideas for other enhanced spectroscopy technologies,quantum photonics and studying light–matter interactions.

关键词： Plasmonic nanoantennas Light-matter interaction Surface-enhanced infrared absorption Overcoupled Biosensing

Generation of brain vascular heterogeneity:recent advances from the perspective of angiogenesis

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第7期20卷 2013-2014页

作者： Nathanael J.lee Ryota L.Matsuoka Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Molecular Medicine Cleveland Clinic Lerner College of MedicineCase Western Reserve UniversityClevelandOHUSA

Heterogeneous proper t i es of vascular endothelial cells in the brain:The brain displays large energy dynamics and consumption,and this high level of metabolic demands is fulfilled by a continuous supply of glucose and oxygen through its vascular *** vasculature consists of highly divergent blood vessel branches,giving rise to a dense network of capillaries that supply blood to all cells across the *** elaborated vascular network is thought to develop via angiogenesis,a process in which new blood vessels grow from pre-existing *** capillaries exhibit organotypic features distinct from other tissues and are formed primarily by two major endothelial cell(EC)types:those that form the semi-permeable blood-brain barrier(BBB)and those that develop highly permeable pores known as fenestrae(Matsuoka et al.,2022).The structural and functional differences between BBB and fenestrated vascular ECs represent a fundamental feature of brain vasculature and form the foundation for both brain function and homeostasis.

关键词： angiogenesis homeostasis network