检索结果-南通市图书馆

Estimation-free spatial-domain image reconstruction of structured illumination microscopy

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2024年第2期17卷 45-58页

作者： Xiaoyan Li Shijie Tu yile Sun Yubing Han Xiang Hao Cuifang kuang Xu Liu State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and Engineering Zhejiang University Hangzhou 310027P.R.China ZJU-Hangzhou Global Scientific and Technological Innovation Center Hangzhou 311200 P.R.China Collaborative Innovation Center of Extreme Optics Shanxi University TaiyuanShanxi 030006P.R.China A dvanced Biomedical Imaging Facility-Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology WuhanHubei 430074P.R.China

Structured illumination microscopy(SIM)achieves super-resolution(SR)by modulating the high-frequency information of the sample into the passband of the optical system and subsequent image *** traditional Wiener-filtering-based reconstruction algorithm operates in the Fourier domain,it requires prior knowledge of the sinusoidal illumination patterns which makes the time-consuming procedure of parameter estimation to raw datasets necessary,besides,the parameter estimation is sensitive to noise or aberration-induced pattern distortion which leads to reconstruction ***,we propose a spatial-domain image reconstruction method that does not require parameter estimation but calculates patterns from raw datasets,and a reconstructed image can be obtained just by calculating the spatial covariance of differential calculated patterns and differential filtered datasets(the notch filtering operation is performed to the raw datasets for attenuating and compensating the optical transfer function(OTF)).Experiments on reconstructing raw datasets including nonbiological,biological,and simulated samples demonstrate that our method has SR capability,high reconstruction speed,and high robustness to aberration and noise.

关键词： Structured illumination microscopy image reconstruction spatial domain digital micromirror device(DMD)

广义回归神经网络修正GNSS垂向坐标时间序列环境负荷效应

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

地球物理学报 2024年第9期67卷 3357-3366页

作者：高菡匡翠林楚彬中南大学地球科学与信息物理学院长沙410083 湖南省测绘科技研究所长沙410007

环境负荷通常会引起GNSS垂向坐标时间序列发生非线性变化,对其影响进行精细改正是GNSS坐标时间序列研究中的一项重要内容.传统的物理模型环境负荷改正方法在模型建立与参数求解等过程中需引入部分简化与近似,导致改正不够精细.本文引入... 详细信息

环境负荷通常会引起GNSS垂向坐标时间序列发生非线性变化,对其影响进行精细改正是GNSS坐标时间序列研究中的一项重要内容.传统的物理模型环境负荷改正方法在模型建立与参数求解等过程中需引入部分简化与近似,导致改正不够精细.本文引入数据驱动的广义回归神经网络(Generalized Regression Neural Network,GRNN)方法改善环境负荷修正效果.以川滇地区GNSS测站的垂向坐标时间序列为研究对象,首先基于变分贝叶斯独立分量分析(Variational Bayesian Independent Component Analysis,vbICA)技术分离坐标序列,分析得到周期性分量,发现大气及陆地储水负荷是引起测站坐标发生季节性变化的重要原因.然后通过GRNN建立与大气及陆地储水相关的环境因素数据和坐标时间序列数据之间的关联,进而消除坐标时间序列中两种环境负荷的影响.经数据驱动的GRNN建模修正大气及陆地储水负荷影响后,各测站坐标残差序列的RMS值平均降低了21.56%,而采用传统的物理模型方法修正后平均降低幅度仅为9.29%,可认为基于GRNN方法的改正效果更好.另外顾及地下温度、冰浓度、比湿、降雨率四种气候因素的影响建立GRNN模型,结果表明地下温度因素对川滇地区GNSS测站垂向坐标影响稍大.

关键词： GNSS坐标时间序列环境负荷广义回归神经网络数据驱动

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

时空框架效应的理论与应用探索

心理科学进展 2024年第9期32卷 1416-1429页

作者：匡仪黄元娜马家涛尹述飞湖北大学心理学系武汉430062 清华大学经济管理学院市场营销系北京100084 浙江大学心理与行为科学系杭州310058

“理解与改进决策”被认为是行为决策研究者应优先关注的重大问题。考察框架效应可同时实现理解与改进决策的目标。目前框架效应的研究与应用主要集中在多属性和风险决策领域,对现实生活中普遍存在的跨期和空间决策领域的探索则相对滞... 详细信息

“理解与改进决策”被认为是行为决策研究者应优先关注的重大问题。考察框架效应可同时实现理解与改进决策的目标。目前框架效应的研究与应用主要集中在多属性和风险决策领域,对现实生活中普遍存在的跨期和空间决策领域的探索则相对滞后。鉴于时间和空间存在着可相互转换的关系,本研究迫切想探讨是否存在一类时空框架效应(即,采用时间或空间框架描述同一决策问题而导致选择偏好改变),可对于理解和改进时空决策发挥切实作用。本研究拟通过认知行为实验、眼动实验及现场实验等多种方法,依次检验时空框架效应的现象(研究1)、心理机制(研究2和3)及助推效果(研究4),为回答所提出的问题提供汇聚性证据。研究成果将为理解跨期和空间决策提供一种新的研究视角和范式,并为助推个人和组织做出更优的决策提供心理学建议。

关键词：跨期决策空间决策框架效应心理机制助推

Reading of Qin Bamboo Slips

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

China Book International 2024年第2期 88-91页

作者： Zhao Yan kuang Yu Chen Dietrich Tschanz School of Liberal Arts Northeast Normal University Department of East Asian Studies at Rutgers University in New Jersey Confucius Institute at Rutgers University Rutgers University in New Jersey University Chinese of Zurich University of Pennsylvania Rutgers University

This book contains a total of 44 articles in 16 groups of Qin bamboo slips,through the interpretation of characters,words,sentence analysis,chapter identification,and interpretation of literary meaning,the original esoteric and difficult documents are dismantled layer by layer,and the relevant historical background is introduced,in an effort to enable readers to obtain a complete background of knowledge needed to understand Qin bamboo slips.

关键词： meaning Bamboo enable

Simultaneously detecting transversal and longitudinal displacement with the dielectric metasurface

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2024年第2期22卷 109-113页

作者：张植宇匡程辉臧昊峰鲁拥华王沛 Department of Optics and Optical Engineering University of Science and Technology of ChinaHefei 230026China Advanced Laser Technology Laboratory of Anhui Province Hefei 230026China

The compact,sensitive,and multidimensional displacement measurement device plays a crucial role in semiconductor manufacture and high-resolution optical *** metasurface offers a promising solution to develop high-precision displacement *** this work,we proposed and experimentally demonstrated a two-dimensional displacement(XZ)measurement device by a dielectric *** transversal and longitudinal displacements of the metasurface can be obtained by the analysis of the interference optical intensity that is generated by the deflected light beams while the metasurface is under linearly polarized *** experimentally demonstrated that displacements down to 5.4 nm along the x-axis and 0.12μm along the z-axis can be resolved with a 900μm×900μm *** work opens up new possibilities to develop a compact high-precision multidimensional displacement sensor.

关键词： metasurface transversal and longitudinal displacement measurement

Individual consistency in spatiotemporal characteristics of migratory Whimbrels in the East Asian-Australasian Flyway

在线全文

学校读者我要写书评

暂无评论

Avian Research 2024年第3期15卷 308-315页

作者： Siwei An Fenliang kuang Wei Wu Chris J.Hassell Jonathan T.Coleman Zijing Gao Xuena Sun Yue Yuan Grace Maglio Kar-Sin K.Leung Xuesong Feng Zhijun Ma Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering Coastal Ecosystems Research Station of the Yangtze River EstuaryInstitute of Biodiversity ScienceSchool of Life SciencesFudan UniversityShanghai200433China School of Chemistry and Environment Yunnan Minzu UniversityKunming650504China Shanghai Chongming Dongtan Nature Reserve Administration Center ChongmingShanghai202183China Global Flyway Network PO Box 3089BroomeWA 6725Australia Australasian Wader Studies Group BroomeWA6725Australia Queensland Wader Study Group Shailer ParkQLD4128Australia Hong Kong Waterbirds Ringing Group Hong Kong999077China

Many migratory birds exhibit interannual consistency in migration schedules,routes and stopover *** the interannual consistency in spatiotemporal characteristics helps understand the maintenance of migration and enables the implementation of targeted conservation *** tracked the migration of Whimbrel(Numenius phaeopus)in the East Asian-Australasian Flyway and collected spatiotemporal data from individuals that were tracked for at least two *** non-parametric tests were used to compare the interannual variations in the dates of departure from and arrival at breeding/nonbreeding sites,and the inter-annual variation in the longitudes when the same individual across the same *** exhibited a high degree of consistency in the use of breeding,nonbreeding,and stopover sites between *** variation of arrival dates at nonbreeding sites was significantly larger than that of the departure dates from nonbreeding and breeding *** used stopover sites by the same individuals in multiple years were concentrated in the Yellow Sea coast during northward migration,but were more widespread during southward *** stopover duration at repeatedly used sites was significantly longer than that at sites used only *** flying across the Yellow Sea,Whimbrels breeding in Sakha(Yakutia)exhibited the highest consistency in migration routes in both autumn and ***,the consistency in migration routes of Yakutia breeding birds was generally higher than that of birds breeding in *** results suggest that the northward migration schedule of the Whimbrels is mainly controlled by endogenous factors,while the southward migration schedule is less affected by endogenous *** repeated use of stopover sites in the Yellow Sea coast suggests this region is important for the migration of Whimbrel,and thus has high conservation value.

关键词： Consistency Migration route Migration timing Shorebird

Cornus officinalis with high pressure wine steaming enhanced anti-hepatic fibrosis: Possible through SIRT3-AMPK axis

在线全文

学校读者我要写书评

暂无评论

Journal of Pharmaceutical Analysis 2024年第5期14卷 758-771页

作者： Xin Han Yan Ning Xinyue Dou yiwen Wang Qiyuan Shan Kao Shi Zeping Wang Chuan Ding Min Hao Kuilong Wang Mengyun Peng Haodan kuang Qiao Yang Xianan Sang Gang Cao School of Pharmacy Zhejiang Chinese Medical UniversityHangzhou311400China

Cornus officinalis,a medicinal and edible plant known for its liver-nourishing properties,has shown promise in inhibiting the activation of hepatic stellate cells(HSCs),crucial indicators of hepatic fibrosis,especially when processed by high pressure wine steaming(HPWS).Herein,this study aims to investigate the regulatory effects of cornus officinalis,both in its raw and HPWS forms,on inflammation and apoptosis in liver fibrosis and their underlying *** vivo liver fibrosis models were established by subcutaneous injection of CCl4,while in vitro HSCs were exposed to transforming growth factor-b(TGF-b).These findings demonstrated that cornus officinalis with HPWS conspicuously ameliorated histopathological injury,reduced the release of proinflammatory factors,and decreased collagen deposition in CCl4-induced rats compared to its raw *** ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometer(UHPLC-QTOF-MS)combined with network analysis,we identified that the pharmacological effects of the changed components of cornus officinalis before and after HPWS,primarily centered on the adenosine phosphate(AMP)-activated protein kinase(AMPK)*** note,cornus officinalis activated AMPK and sirtuin 3(SIRT3),promoting the apoptosis of activated HSCs through the caspase cascade by regulating caspase3,caspase6 and *** interfering RNA(siRNA)experiments showed that cornus officinalis could regulate AMPK activity and its mediated-apoptosis through *** conclusion,cornus officinalis exhibited the ability to reduce inflammation and apoptosis,with the SIRT3-AMPK signaling pathway identified as a potential mechanism underlying the synergistic effect of cornus officinalis with HPWS on anti-liver fibrosis.

关键词： Liver fibrosis SIRT3 Cornus officinalis AMPK Caspase6

钢渣粉低液固比固碳工艺及固碳钢渣粉对水泥基材料性能的影响

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

材料导报 2024年第13期38卷 155-162页

作者：伍勇华匡玉峰易昂何娟原毅冰西安建筑科技大学材料科学与工程学院西安710055

矿物固碳进行CO_(2)捕集是减少温室效应的重要途径,钢铁生产企业利用钢渣与带有余热和CO_(2)的废气反应可以达到协同处置的效果。本工作研究了低液固比(润湿状态)条件下钢渣固碳的最佳工艺,确定出最佳固碳反应参数为反应温度100℃、液固... 详细信息

矿物固碳进行CO_(2)捕集是减少温室效应的重要途径,钢铁生产企业利用钢渣与带有余热和CO_(2)的废气反应可以达到协同处置的效果。本工作研究了低液固比(润湿状态)条件下钢渣固碳的最佳工艺,确定出最佳固碳反应参数为反应温度100℃、液固比9%、反应时间60 min、CO_(2)压力0.4 MPa。该工艺条件下,钢渣粉固碳率可达119.1 g CO_(2)/kg,固碳产物主要为方解石型碳酸钙。在此基础上,研究了掺入固碳钢渣粉对水泥净浆体积安定性、标准稠度需水量、凝结时间、胶砂强度和水化热的影响。结果表明:钢渣粉固碳后,体积安定性明显改善;固碳钢渣粉对水泥净浆标准稠度需水量无不利影响;与未固碳钢渣相比,固碳钢渣对水泥凝结硬化的延缓作用有所减弱,且随固碳率增大减弱效果增强;固碳钢渣粉在低掺量(10%)时,能提高水泥胶砂的3 d、7 d和28 d抗压强度,但掺量过高(>30%)时,会显著降低水泥胶砂的3 d、7 d和28 d抗压强度。XRD测试表明CaCO_(3)能够水化生成单碳型水化碳铝酸钙(C_(3)A·CaCO_(3)·11H_(2)O)和半碳型水化碳铝酸钙(C_(3)A·0.5CaCO_(3)·0.5Ca(OH)_(2)·11.5H_(2)O)。低液固比固碳有助于钢铁企业实现碳中和,也可以改善钢渣体积安定性,使钢渣粉得到更有效的利用。

关键词：钢渣矿物固碳固碳率体积安定性水化碳铝酸钙

Parathyroidectomy restored bone mineral density in a neglected femoral neck fracture with renal osteodystrophy:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2024年第25期12卷 5761-5768页

作者： Tzu-Ching Lin Shih-Wei Lin kuang-Ting Yeh Department of Education Hualien Tzu Chi HospitalBuddhist Tzu Chi Medical FoundationHualien 970473Taiwan ProvinceChina Department of Orthopedics Ten-Chan Medical GroupTaoyuan 320003Taiwan ProvinceChina Department of Orthopedics Hualien Tzu Chi HospitalBuddhist Tzu Chi Medical FoundationHualien 970473Taiwan ProvinceChina Department of Graduate Institute of Clinical Pharmacy Tzu Chi UniversityHualien 970374Taiwan ProvinceChina

BACKGROUND This case report contributes to the medical literature by highlighting the successful management of a neglected femoral neck fracture in a patient with renal osteodystrophy and secondary hyperparathyroidism(SHPTH)who was on dialysis due to end-stage renal disease(ESRD).It underscores the efficacy of parathyroidectomy(PTX)in restoring bone mineral density(BMD)and promoting fracture healing,addressing a significant complication in ESRD *** SUMMARY A 36-year-old female with renal osteodystrophy and on dialysis due to ESRD presented with a history of left patellar tendon rupture and later,a right achilles tendon avulsion *** right hip pain led to the discovery of a neglected right femoral neck fracture,which was initially overlooked due to the patient’s complex medical *** months post-achilles tendon repair,the patient underwent PTX to manage the refractory *** postoperative course included rehabilitation and weight-bearing ***,2 years after osteosynthesis,radiographic assessments indicated a solid union of the periprothesis fracture and significant improvement in BMD,showcasing the efficacy of the treatment *** PTX,combined with appropriate rehabilitation,is crucial for improving BMD and fracture healing in ESRD patients with SHPTH.

关键词： Secondary hyperparathyroidism Parathyroidectomy Fracture Renal osteodystrophy Case report