搜索结果: 1-15 共查到“NIR”相关记录99条 . 查询时间(0.076 秒)
2023年6月30日，微生物所叶健研究团队在Plant Communications期刊上在线发表题为 Near infrared light and PIF4 promote plant antiviral defense by enhancing RNA interference的论文。研究显示，使用近红外光NIR（810 nm）处理植物（光疗法），通过促进光信号途径关键转录因子PIF4的积累...
结直肠癌是全球发病率和死亡率都位居前列的恶性肿瘤，手术是结直肠癌治疗的主要方式，完全切除肿瘤 (R0) 与更好的总生存期和更低的复发率相关。然而，进展期结直肠癌具有较高的不完全切除率，缺乏实时的术中影像技术来辅助外科医生区分恶性和良性组织，R0 切除在许多患者中仍然具有挑战性。近红外二区（near-infrared window II，NIR-II）荧光分子成像是一种崭新的成像技术，具有灵敏度高、...
结直肠癌是全球发病率和死亡率都位居前列的恶性肿瘤，手术是结直肠癌治疗的主要方式，完全切除肿瘤 (R0) 与更好的总生存期和更低的复发率相关。然而，进展期结直肠癌具有较高的不完全切除率，缺乏实时的术中影像技术来辅助外科医生区分恶性和良性组织，R0 切除在许多患者中仍然具有挑战性。近红外二区（near-infrared window II，NIR-II）荧光分子成像是一种崭新的成像技术，具有灵敏度高、...
胶质母细胞瘤（Glioblastoma Multiforme, GBM）是最常见、最致命的脑肿瘤之一。目前，治疗脑胶质瘤最常用的方法是手术切除，并辅以术后放疗和化疗。然而，GBM浸润性生长的特性使神经外科医生难以准确识别肿瘤边缘进行最大程度切除。叶酸受体（Folate Receptor, FR）已被报道在GBM中高表达，这使它成为GBM成像的一个有前途的靶点。
双金属协同策略合成NIR-II吸收的碳龙配合物（图）
双金属 NIR-II 碳龙配合物 Figure 1
2023/6/21
近日，夏海平教授/林玉妹副教授等在“碳龙化学”的结构创新和性能拓展等方面取得新进展：首次合成了吸收光谱达到NIR-II（近红外二区）的 “碳龙配合物”。相关成果以“Condensed Osmaquinolines with NIR-II Absorption Synthesized by Aryl C-H Annulation and Aromatization”为题在线发表于Angew. Che...
Green analytical assay for the quality assessment of tea by using pocket-sized NIR spectrometer
tea Green analytical quality assessment micronear-infrared spectrometer
2023/4/20
Rapid and low-cost testing tools provide new methods for the evaluation of tea quality. In this study, a micronear-infrared (NIR) spectrometer was used for the qualitative and quantitative evaluation ...
中国科学院上海光学精密机械研究所在UV-NIR超快激光诱导磷硼酸盐玻璃合成CsPbBr3量子点方面取得新进展（图）
中国科学院上海光学精密机械研究所 UV-NIR 超快激光 磷硼酸盐 玻璃合成 CsPbBr3量子点
2020/8/4
近日，中国科学院上海光学精密机械研究所高功率激光单元技术实验室在UV-NIR超快激光诱导磷硼酸盐玻璃合成CsPbBr3量子点方面取得新进展。研究人员首先通过掺铝和热处理工艺在硼磷酸盐玻璃中得到了具有优异热稳定和化学稳定性的CsPbBr3量子点。随后通过超快激光诱导在玻璃表面和内部析出了钙钛矿CsPbBr3量子点，该研究扩大了钙钛矿量子点的应用范围，在构造3D光学器件领域具有应用前景。相关研究成果已...
An efficient method to reduce grain angle influence on NIR spectra for predicting extractives content from heartwood stem cores of Toona. Sinensis
NIR spectra heartwood stem cores Toona. Sinensis grain angle
2023/6/5
A fast, reliable and non-destructive method is needed to qualify the extractives content (EC) in heartwood of T. sinensis cores in the breeding program for studying the genetic effect on EC. However, ...
为解决初烤烟叶收购中人工分级主观因素影响较大的问题，提出了一种基于近红外（NIR）光谱技术结合极限学习机（ELM）算法自动鉴别烟叶等级的方法。文章首次提出基于品质相似、价格接近原则的烟叶收购分组方法，通过交互检验优化ELM分组、分级模型的隐节点数，并与K最近邻法（KNN）、支持向量机（SVM）和随机森林（RF）等多分类算法进行了比较。结果表明：ELM分类模型参数自动优化、训练时间短、稳定性和预测能...
CALIBRATION OF LOW COST RGB AND NIR UAV CAMERAS
calibration non-metric camera calibration tests GRD GSD low-cost cameras
2016/7/5
Non-metric digital cameras are being widely used for photogrammetric studies. The increase in resolution and quality of images obtained by non-metric cameras, allows to use it in low-cost UAV and terr...
UAS BASED TREE SPECIES IDENTIFICATION USING THE NOVEL FPI BASED HYPERSPECTRAL CAMERAS IN VISIBLE,NIR AND SWIR SPECTRAL RANGES
UAS Hyperspectral Photogrammetry SWIR Tree Species
2016/7/5
Unmanned airborne systems (UAS) based remote sensing offers flexible tool for environmental monitoring. Novel lightweight Fabry-Perot interferometer (FPI) based, frame format, hyperspectral imaging in...
Rapid Detection of Total Nitrogen Content in Soy Sauce using NIR Spectroscopy
near-infrared spectroscopy partial least squares
2015/12/30
A method for the rapid and nondestructive determination of total nitrogen content in soy sauce was explored. Prediction models were established using near-infrared spectroscopy combined with each of t...
MAPPING OF FOLIAR CONTENT USING RADIATIVE TRANSFER MODELING AND VIS-NIR HYPERSPECTRAL CLOSE-RANGE REMOTE-SENSING
Close-range remote sensing Hyperspectral Leaf optical properties Radiative transfer model Vegetation
2015/9/21
Most methods for retrieving foliar content from hyperspectral data are well adapted either to remote-sensing scale, for which each spectral measurement has a spatial resolution ranging from a few doze...
Using spectral information at the nir water absorption features to estimate canopy water content and biomass
Vegetation Canopy water content Biomass
2015/8/20
Biomass is one of the key biophysical variables of interest in vegetation studies and it can be defined in terms of fresh matter weight
or dry matter weight. Biogeochemical processes, such as photosy...
Prediction of Total Phenolics and Flavonoids Contents in Chinese Wild Rice (Zizania latifolia) Using FT-NIR Spectroscopy
Total Phenolics Flavonoids Contents
2016/6/2
Total phenolics and flavonoids contents in Chinese wild rice were predicted using Near Infrared (NIR) spectroscopy as a rapid method. A Partial Least Square (PLS) algorithm was applied to perform the ...