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Correlation of image textures of a polarization feature parameter and the microstructures of liver fibrosis tissues
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作者 Yue Yao Jiachen Wan +3 位作者 Fengdi Zhang Yang Dong Lihong Chen Hui Ma 《Journal of Innovative Optical Health Sciences》 SCIE EI CSCD 2023年第5期59-68,共10页
Mueller matrix imaging is emerging for the quantitative characterization of pathological microstructures and is especially sensitive to fibrous structures.Liver fibrosis is a characteristic of many types of chronic li... Mueller matrix imaging is emerging for the quantitative characterization of pathological microstructures and is especially sensitive to fibrous structures.Liver fibrosis is a characteristic of many types of chronic liver diseases.The clinical diagnosis of liver fibrosis requires time-consuming multiple staining processes that specifically target on fibrous structures.The staining proficiency of technicians and the subjective visualization of pathologists may bring inconsistency to clinical diagnosis.Mueller matrix imaging can reduce the multiple staining processes and provide quantitative diagnostic indicators to characterize liver fibrosis tissues.In this study,a fibersensitive polarization feature parameter(PFP)was derived through the forward sequential feature selection(SFS)and linear discriminant analysis(LDA)to target on the identification of fibrous structures.Then,the Pearson correlation coeffcients and the statistical T-tests between the fiber-sensitive PFP image textures and the liver fibrosis tissues were calculated.The results show the gray level run length matrix(GLRLM)-based run entropy that measures the heterogeneity of the PFP image was most correlated to the changes of liver fibrosis tissues at four stages with a Pearson correlation of 0.6919.The results also indicate the highest Pearson correlation of 0.9996 was achieved through the linear regression predictions of the combination of the PFP image textures.This study demonstrates the potential of deriving a fiber-sensitive PFP to reduce the multiple staining process and provide textures-based quantitative diagnostic indicators for the staging of liver fibrosis. 展开更多
关键词 Polarization feature parameter polarization image textures liver fibrosis.
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Study on multiple induced polarization parameters in groundwater exploration in Bashang poverty alleviation area of Heibei Province,China
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作者 LIU Zhi-yuan TAN Ding +3 位作者 CHEN Zhi-bin WEI Yun-fei CHAI Quan CHEN Xiao-hang 《Journal of Groundwater Science and Engineering》 2020年第3期274-280,共7页
The study examines a water exploration and poverty alleviation project in Guyuan county.The study analyzes correlations between aquifers and multiple induced polarization(IP)parameters,including resistivity,polarizabi... The study examines a water exploration and poverty alleviation project in Guyuan county.The study analyzes correlations between aquifers and multiple induced polarization(IP)parameters,including resistivity,polarizability,deviation,half decay time,water-bearing factors,and Kc,a new parameter refined in this study.Based on the study,the well was placed accurately,and its maximum water inflow reached 30 m3/h.Kc value highlights the rate of change at early stages of IP secondary field.Kc value served as a quick indicator in this groundwater prospecting and is validated in practice.Progress has been made in finding new parameters in exploring water with IP method.Thanks to the project,local people have access to water and poverty alleviation has scored some achievements. 展开更多
关键词 Bashang Induced polarization parameters Decay rate Secondary field
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Creation of radially polarized optical fields with multiple controllable parameters using a vectorial optical field generator 被引量:1
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作者 Sichao Zhou Shiyi Wang +2 位作者 Jian Chen Guanghao Rui Qiwen Zhan 《Photonics Research》 SCIE EI 2016年第5期35-39,共5页
A vectorial optical field generator(VOF-Gen) based on two reflective phase-only liquid crystal spatial light modulators enables the creation of an arbitrary optical complex field. In this work, the capabilities of the... A vectorial optical field generator(VOF-Gen) based on two reflective phase-only liquid crystal spatial light modulators enables the creation of an arbitrary optical complex field. In this work, the capabilities of the VOF-Gen in terms of manipulating the spatial distributions of phase, amplitude, and polarization are experimentally demonstrated by generating a radially polarized optical field consisted of five annular rings, the focusing properties of which are also numerically studied with vectorial diffraction theory. By carefully adjusting the relative amplitude and phase between the adjacent rings, an optical needle field with purely longitudinal polarization can be produced in the focal region of a high numerical aperture lens. The versatile method presented in this work can be easily extended to the generation of a vectorial optical field with any desired complex distributions. 展开更多
关键词 Creation of radially polarized optical fields with multiple controllable parameters using a vectorial optical field generator SLM
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Quantum stereodynamics study for the reaction F + HD
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作者 刘玉芳 张伟 +1 位作者 施德恒 孙金锋 《Chinese Physics B》 SCIE EI CAS CSCD 2009年第10期4264-4273,共10页
This paper studies the quantum stereodynamics of the F + HD(v = 0, j = 0)→ HD + F/HF + D reaction at the collision energies of 0.52 and 0.87 kcal/mol. The quantum scattering calculations, based on Stark-Werner p... This paper studies the quantum stereodynamics of the F + HD(v = 0, j = 0)→ HD + F/HF + D reaction at the collision energies of 0.52 and 0.87 kcal/mol. The quantum scattering calculations, based on Stark-Werner potential energy surfaces, show that the differential cross sections for the HF(v′= 2) + D and DF(v′= 3) +H channels are consistent with the recent theoretical results. Furthermore, the product rotational angular momentum orientation and alignment have been determined for some selected rovibrational states of the HF+ D and DF+ H channels. 展开更多
关键词 STEREODYNAMICS differential cross section polarization parameters
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Characterization of the Sulfide Deposits in the Southeastern Nigeria Using VLF Method: Insights from Numerical Modeling and Field Examples
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作者 D.E.Falebita O.Afolabi +1 位作者 B.O Soyinka A.A.Adepelumi 《Journal of Geological Research》 2021年第1期39-49,共11页
A priori geologic and geophysical information has been used to construct conceptual VLF experiments on conductively and inductively coupled overburden geological models of the lead-zinc(Pb-Zn)mineralization zone found... A priori geologic and geophysical information has been used to construct conceptual VLF experiments on conductively and inductively coupled overburden geological models of the lead-zinc(Pb-Zn)mineralization zone found in southeastern Nigeria.This is based on the finite element approach to(1)simulate different geologic situations of overburden occurrence,(2)examine the roles played by overburden in modifying and masking VLF responses of a buried conductor target,and(3)confirm the effectiveness of VLF method in mapping lead-zinc lodes found in sedimentary terrains.The computed theoretical model curves and field examples are expected to serve as guide for VLF anomaly pattern recognition due to overburden thickness,resistivity and width of conductor in similar terrain as the study area. 展开更多
关键词 SULFIDE Conductor VLF Overburden thickness Polarization parameters NIGERIA
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What Physics Can We Learn from Integrated Stokes Parameter Measurements Made with Polarized Electrons?
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作者 Timothy J.Gay 《Tsinghua Science and Technology》 SCIE EI CAS 2001年第5期458-468,483,共12页
关键词 What Physics Can We Learn from Integrated Stokes parameter Measurements Made with polarized Electrons WE
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Cellulose Solubility in Deep Eutectic Solvents:Inspecting Quantitative Hydrogen-Bonding Analysis
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作者 Kuang-Jie Xu Bao-Qing Zhang +1 位作者 Xin Qiao Chen-Yang Liu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2023年第1期75-83,共9页
According to the Kamlet-Abraham-Taft(KAT)polarity parameters(α,β,π*),polymers and solvents can be categorized as hydrogen-bond(H-bond)acidic(α>β)or H-bond basic(α<β).Recently,we proposed a quantitative hy... According to the Kamlet-Abraham-Taft(KAT)polarity parameters(α,β,π*),polymers and solvents can be categorized as hydrogen-bond(H-bond)acidic(α>β)or H-bond basic(α<β).Recently,we proposed a quantitative hydrogen bonding(QHB)analysis to predict the solubility of polymers in ionic liquids(ILs)using the product ofΔαΔβ<0 as an indicator,whereΔαis the difference between the H-bond acidic parameters of the polymer and IL,andΔβis the difference in their basicity,while the prerequisite of the“complementary”principle(i.e.,that one component is H-bond acidic and the other is basic)is satisfied.Here,the applicability of QHB analysis was first confirmed by testing the solubilities of carefully chosen polymer/deep eutectic solvent(DES)pairs,as the DESs were eutectic mixtures dominated by hydrogen bonding interactions.Then,our attention focused on the solubility of cellulose in DESs.Our testing results as well as the typical published results were summarized,which indicate that the potential DESs for cellulose dissolution and regeneration must be of the H-bond basic type because the“complementary”principle should be satisfied as a prerequisite.However,the H-bond basic DESs investigated in this study do not show the superior solubility of cellulose that has been commonly observed for H-bond basic ILs,even if the criterion ofΔαΔβ<0 is satisfied for both DESs and ILs.Possible reasons for this discrepancy are given to understand the varying effectiveness in cellulose dissolution for H-bond basic DESs and ILs. 展开更多
关键词 Deep eutectic solvent Cellulose dissolution Empirical polarity parameters Hydrogen bonding interaction
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