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Ray-triangular Bézier patch intersection using hybrid clipping algorithm Article

Yan-hong LIU,Juan CAO,Zhong-gui CHEN,Xiao-ming ZENG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 10,   Pages 1018-1030 doi: 10.1631/FITEE.1500390

Abstract: In this paper, we present a novel geometric method for efficiently and robustly computing intersections between a ray and a triangular Bézier patch defined over a triangular domain, called the hybrid clipping (HC) algorithm. If the ray pierces the patch only once, we locate the parametric value of the intersection to a smaller triangular domain, which is determined by pairs of lines and quadratic curves, by using a multi-degree reduction method. The triangular domain is iteratively clipped into a smaller one by combining a subdivision method, until the domain size reaches a prespecified threshold. When the ray intersects the patch more than once, Descartes’ rule of signs and a split step are required to isolate the intersection points. The algorithm can be proven to clip the triangular domain with a cubic convergence rate after an appropriate preprocessing procedure. The proposed algorithm has many attractive properties, such as the absence of an initial guess and insensitivity to small changes in coefficients of the original problem. Experiments have been conducted to illustrate the efficacy of our method in solving ray-triangular Bézier patch intersection problems.

Keywords： Ray tracing     Triangular Bé     zier surface     Ray-patch intersection     Root-finding     Hybrid clipping    

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Microplastics removal strategies: A step toward finding the solution

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 1,   Pages 7-7 doi: 10.1007/s11783-021-1441-3

Abstract: Other than finding a suitable method, the creation of legal restrictions at a governmental level by imposing

Keywords： Aquatic     Coagulation     Microplastics     Plastic     Water Treatment Plant     Wastewater    

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Calculation method on shape finding of self-anchored suspension bridge with spatial cables

Yan HAN, Zhengqing CHEN, Shidong LUO, Shankui YANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 165-172 doi: 10.1007/s11709-009-0021-6

Abstract: Based on the spatial model, a reliable and accurate calculation method on the shape finding of self-anchoredThe results show that the shape-finding calculation method is effective and reliable.

Keywords： bridge engineering     self-anchored suspension bridges     special cables     shape-finding     calculation method    

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Alternate partial root-zone irrigation with high irrigation frequency improves root growth and reduces

Shaoqing DU, Ling TONG, Shaozhong KANG, Fusheng LI, Taisheng DU, Sien LI, Risheng DING

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 2,   Pages 188-196 doi: 10.15302/J-FASE-2017176

Abstract: Alternate partial root-zone irrigation (APRI) can improve water use efficiency in arid areas.show that in comparison with conventional irrigation, APRI with high frequency significantly increased rootA significantly positive relationship between stomatal conductance and root length density was foundOverall, alternate partial root-zone irrigation with high frequency has a great potential to promoteroot growth, expand water uptake capacity and reduce unproductive water loss in the arid apple production

Keywords： alternate partial root-zone irrigation     apple tree     leaf water use efficiency     root length density     stomatal    

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ROLE OF NITROGEN SENSING AND ITS INTEGRATIVE SIGNALING PATHWAYS IN SHAPING ROOT SYSTEM ARCHITECTURE

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 316-332 doi: 10.15302/J-FASE-2022441

Abstract:

● The Green Revolution broadened the trade-off between yield and nitrogen-use efficiency.

Keywords： Nitrogen     root system architecture     phytohormone     crosstalk     nitrogen-use efficiency     breeding strategy    

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The evolution of surgical and medical treatment of aortic root aneurysm

Xu Yu Jin,Li Yuan,Mario Petrou,John R. Pepper

Frontiers of Medicine 2014, Volume 8, Issue 4,   Pages 427-432 doi: 10.1007/s11684-014-0385-4

Abstract:

Since first report of aortic root replacement in 1968, the surgical risk and long term outcome ofpatients with aortic root aneurysm have been continuously improving.

Keywords： aortic root aneurysm     aortic root replacement     valve sparing root replacement     personalised external aorticroot support    

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Effects of previous drying of sediment on root functional traits and rhizoperformance of emerged macrophytes

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1427-1

Abstract:

• Sediment desiccation alters morphological characteristics of aquatic sediment.

Keywords： Fibrous-root macrophytes     Thick-root macrophytes     Nutrients removal     Wet sediment     Dried-rewetted sediment    

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Optimizing hairy root production from explants of

Zhaogui YAN, Shengyu LIU, Junlian ZHANG, Guan HUANG, Lijun DUAN, Yaomei YE

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 4,   Pages 513-522 doi: 10.15302/J-FASE-2019272

Abstract: this species on a large scale, hairy roots in were induced using and various factors affecting hairy rootThe optimal protocol for hairy root induction and growth was: young shoots, pre-cultured in Y1 for 2

Keywords： hairy root induction     medicinal plant     MS growth medium     Phyllanthus hainanensis     Rhizobium rhizogenes    

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Improving the efficiency and effectiveness of global phosphorus use: focus on root and rhizosphere levels

Uwe LUDEWIG, Lixing YUAN, Günter NEUMANN

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 4,   Pages 357-365 doi: 10.15302/J-FASE-2019275

Abstract: In maize, studies on root architectural and morphological traits appear promising.

Keywords： acquisition efficiency     plant growth promoting rhizobacteria     phosphate     use efficiency     utilization efficiency    

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A knowledge reasoning Fuzzy-Bayesian network for root cause analysis of abnormal aluminum electrolysis

Weichao Yue, Xiaofang Chen, Weihua Gui, Yongfang Xie, Hongliang Zhang

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 414-428 doi: 10.1007/s11705-017-1663-x

Abstract: Root cause analysis (RCA) of abnormal aluminum electrolysis cell condition has long been a challengingtechnicians providing a clear and intuitive framework to this complex task, and also achieve the result of rootThe proposed method was verified under 20 sets of abnormal cell conditions, and implements root causeanalysis by finding the abnormal state of root node, which has a maximum posterior probability by Bayesian

Keywords： electrolysis cell condition     Fuzzy-Bayesian network     multi-source knowledge solidification and reasoning     root    

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Reduced texaphyrin: A ratiometric optical sensor for heavy metals in aqueous solution

Root, Gregory Thiabaud, Jonathan L. Sessler

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 1,   Pages 19-27 doi: 10.1007/s11705-019-1888-y

Abstract: We report here a water-soluble metal cation sensor system based on the as-prepared or reduced form of an expanded porphyrin, texaphyrin. Upon metal complexation, a change in the redox state of the ligand occurs that is accompanied by a color change from red to green. Although long employed for synthesis in organic media, we have now found that this complexation-driven redox behavior may be used to achieve the naked eye detectable colorimetric sensing of several number of less-common metal ions in aqueous media. Exposure to In(III), Hg(II), Cd(II), Mn(II), Bi(III), Co(II), and Pb(II) cations leads to a colorimetric response within 10 min. This process is selective for Hg(II) under conditions of competitive analysis. Furthermore, among the subset of response-producing cations, In(III) proved unique in giving rise to a ratiometric change in the ligand-based fluorescence features, including an overall increase in intensity. The cation selectivity observed in aqueous media stands in contrast to what is seen in organic solvents, where a wide range of texaphyrin metal complexes may be prepared. The formation of metal cation complexes under the present aqueous conditions was confirmed by reversed phase high-performance liquid chromatography, ultra-violet-visible absorption and fluorescence spectroscopies, and high-resolution mass spectrometry.

Keywords： texaphyrin     fluorescent sensor     ion-sensing     indium     mercury    

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The Major Root Causes of Smog in China and Technologies and Solutions to Reduce It

Ke Liu

Frontiers of Engineering Management 2016, Volume 3, Issue 4,   Pages 343-348 doi: 10.15302/J-FEM-2016053

Abstract: This paper discusses the two major root causes of smog in China.

Keywords： smog     emissions     coal refining     coal utilization     solutions    

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The new finding of Neogene marine low-resistivity light oil field in the western part of Pearl River

Xie Yuhong

Strategic Study of CAE 2011, Volume 13, Issue 5,   Pages 16-22

Abstract:

Based on the new finding of Wenchang L low-resistivity light oil field,the finding process,reservoir characteristics and pool-forming pattern were studied.

Keywords： Wenchang L low-resistivity light oil field     finding process     reservoir characteristics     pool-forming pattern    

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Philadelphia chromosome-positive acute myeloid leukemia with masses and osteolytic lesions: finding of

Zhan Su, Fengyu Wu, Weiyu Hu, Xiaodan Liu, Shaoling Wu, Xianqi Feng, Zhongguang Cui, Jie Yang, Zhenguang Wang, Hongzai Guan, Hongguo Zhao, Wei Wang, Chunting Zhao, Jun Peng

Frontiers of Medicine 2017, Volume 11, Issue 3,   Pages 440-444 doi: 10.1007/s11684-017-0523-x

Abstract:

Philadelphia chromosome-positive acute myeloid leukemia is controversial and difficult to distinguish from the blast phase of chronic myeloid leukemia. As a myeloid neoplasm, rare cases of this leukemia manifest multiple soft-tissue tumors or bone lytic lesions. In this paper, we describe a 49-year-old male patient who had an abrupt onset with sharp chest pain, fever, fatigue, emaciation, and splenomegaly. 18F-fluoro-deoxy-glucose positron emission tomography/computed tomography (18F-FDG PET/CT) result showed diffuse and uneven hypermetabolic lesions in the bone marrow with peripheral bone marrow expansion, multiple soft tissue neoplasms with high 18F-FDG uptake, and lytic bone lesions. Bone marrow smear and biopsy detected aberrant blast cells expressing myeloid rather than lymphoid immunophenotype marker. For the existence of Philadelphia chromosome and BCR-ABL1 fusion gene together with complex chromosome abnormalities, a diagnosis of Philadelphia-positive acute myeloid leukemia was made, although the type (de novo or blast crisis) remained unclear.

Keywords： Philadelphia chromosome     acute myeloid leukemia     mass     osteolysis     positron emission tomography    

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INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3,   Pages 447-459 doi: 10.15302/J-FASE-2021399

Abstract: Interactions between fennel (Foeniculum vulgare) roots/root exudates and Phytophthora

Keywords： fennel and tobacco rotation     infection behavior     Phytophthora nicotianae     reactive oxygen species     vanillin    

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Title Author Date Type Operation

Ray-triangular Bézier patch intersection using hybrid clipping algorithm

Yan-hong LIU,Juan CAO,Zhong-gui CHEN,Xiao-ming ZENG

Journal Article

Microplastics removal strategies: A step toward finding the solution

Journal Article

Calculation method on shape finding of self-anchored suspension bridge with spatial cables

Yan HAN, Zhengqing CHEN, Shidong LUO, Shankui YANG

Journal Article

Alternate partial root-zone irrigation with high irrigation frequency improves root growth and reduces

Shaoqing DU, Ling TONG, Shaozhong KANG, Fusheng LI, Taisheng DU, Sien LI, Risheng DING

Journal Article

ROLE OF NITROGEN SENSING AND ITS INTEGRATIVE SIGNALING PATHWAYS IN SHAPING ROOT SYSTEM ARCHITECTURE

Journal Article

The evolution of surgical and medical treatment of aortic root aneurysm

Xu Yu Jin,Li Yuan,Mario Petrou,John R. Pepper

Journal Article

Effects of previous drying of sediment on root functional traits and rhizoperformance of emerged macrophytes

Journal Article

Optimizing hairy root production from explants of

Zhaogui YAN, Shengyu LIU, Junlian ZHANG, Guan HUANG, Lijun DUAN, Yaomei YE

Journal Article

Improving the efficiency and effectiveness of global phosphorus use: focus on root and rhizosphere levels

Uwe LUDEWIG, Lixing YUAN, Günter NEUMANN

Journal Article

A knowledge reasoning Fuzzy-Bayesian network for root cause analysis of abnormal aluminum electrolysis

Weichao Yue, Xiaofang Chen, Weihua Gui, Yongfang Xie, Hongliang Zhang

Journal Article

Reduced texaphyrin: A ratiometric optical sensor for heavy metals in aqueous solution

Root, Gregory Thiabaud, Jonathan L. Sessler

Journal Article

The Major Root Causes of Smog in China and Technologies and Solutions to Reduce It

Ke Liu

Journal Article

The new finding of Neogene marine low-resistivity light oil field in the western part of Pearl River

Xie Yuhong

Journal Article

Philadelphia chromosome-positive acute myeloid leukemia with masses and osteolytic lesions: finding of

Zhan Su, Fengyu Wu, Weiyu Hu, Xiaodan Liu, Shaoling Wu, Xianqi Feng, Zhongguang Cui, Jie Yang, Zhenguang Wang, Hongzai Guan, Hongguo Zhao, Wei Wang, Chunting Zhao, Jun Peng

Journal Article

INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE

Journal Article