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Reconstructing Equation of State for Dark Energy in Double Complex Symmetric Gravitational Theory

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Communications in Theoretical Physics 2007年第6期47卷 1148-1152页

作者： SHAO ying gui Yuan-xing WANG Wei Department of Physics Dalian University of Technology Dalian 116023 China

We propose to study the accelerating expansion of the universe in the double complex symmetric gravitational theory （DCSGT）. The universe we live in is taken as the real part of the whole spacetime MC^4（J）, which is double complex. By introducing the spatially flat FRW metric, not only the double Friedmann equations but also the two constraint conditions py = 0 and J^2 = 1 are obtained. Farthermore, using parametric DL（z） ansatz, we reconstruct the ω/（z） and V（Ф） for dark energy from real observational data. We find that in the two cases of J = i, pJ = 0, and J = ε, pJ≠0, the corresponding equations of state ω＇（z） remain close to -1 at present （z = 0） and change from below -1 to above -1. The results illustrate that the whole spacetime, i.e. the double complex spacetime MC^4（J）, may be either ordinary complex （J = i, pJ = 0） or hyperbolic complex （J = ε, pJ≠ 0）. And the fate of the universe would be Big Rip in the future.

关键词： double complex symmetric gravitational theory equation of state dark energy

Xueshuantong improves cerebral blood perfusion in elderly patients with lacunar infarction

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Neural Regeneration Research 2013年第9期8卷 792-801页

作者： Qifeng gui Yunmei Yang Shihong ying Minming Zhang Department of Geriatrics First Affiliated HospitalSchool of MedicineZhejiang University Department of Radiology First Affiliated HospitalSchool of MedicineZhejiang University Department of Radiology Second Affiliated HospitalSchool of MedicineZhejiang University

A total of 64 patients with acute lacunar infarction were enrolled within 24 hours of onset. The patients received conventional therapy （antiplatelet drugs and hypolipidemic drugs） alone or conventional therapy plus 450 mg Xueshuantong once a day. The main ingredient of the Xueshuantong lyophilized powder used for injection was Panax notoginseng saponins. Assessments were made at admission and at discharge using the National Institutes of Health Stroke Scale, the Activity of Daily Living and the Mini-Mental State Examination. Additionally, the relative cerebral blood flow, relative cerebral blood volume and relative mean transit time in the region of interest were calculated within 24 hours after the onset of lacunar infarction, using dynamic susceptibility contrast magnetic resonance perfusion imaging technology. Patients underwent a follow-up MRI scan after 4 weeks of treatment. There was an improvement in the Activity of Daily Living scores and a greater reduction in the scores on the National Institutes of Health Stroke Scale in the treatment group than in the control group. However, the Mini-Mental State Examination scores showed no significant differences after 4 weeks of treatment. Compared with the control group, the relative cerebral blood flow at discharge had increased and showed a greater improvement in the treatment group. Furthermore, there was a reduction in the relative mean transit time at discharge and the value was lower in the treatment group than in the control group. The experimental findings indicate that Xueshuantong treatment improves neurological deficits in elderly patients with lacunar infarction, and the mechanism may be related to increased cerebral perfusion.

关键词： neural regeneration traditional Chinese medicine Xueshuantong cerebral perfusion lacunarinfarction Panax notoginseng saponins cerebrovascular disease neuroprotection grants-supported paper photographs-containing paper neuroregeneration

f-Class Two Graphs Whose f-Cores Have Maximum Degree Two

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Acta Mathematica Sinica,English Series 2014年第4期30卷 601-608页

作者： xia ZHANG gui ying YAN Jian Sheng CAI School of Mathematics Science Shandong Normal University Academy of Mathematics and Systems Science Chinese Academy of Sciences School of Mathematics and Information Sciences Weifang University

Abstract An f-coloring of a graph G is an edge-coloring of G such that each color appears at each vertex v ∈ V（G） at most f（v） times. The f-core of G is the subgraph of G induced by the vertices v of degree d（v） = f（v）maxv∈y（G）{ [d（v）/f（v）l}. In this paper, we find some necessary conditions for a simple graph, whose f-core has maximum degree two, to be of class 2 for f-colorings.

关键词： f-Coloring simple graph f-chromatic index f-class 2

Fruit shape detection by level set

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第8期8卷 1232-1236页

作者： gui Jiang-sheng RAO xiu-qin ying Yi-bin School of Biosystems Engineering and Food Science Zhejiang University Hangzhou 310029 China

A novel approach for fruit shape detection in RGB space was proposed,which was based on fast level set and Chan-Vese model named as Modified Chan-Vese model(MCV) . This new algorithm is fast and suitable for fruit sorting because it does not need re-initializing. MCV has three advantages compared to the traditional methods. First,it provides a unified frame-work for detecting fruit shape boundary,and does not need any preprocessing even though the raw image is noisy or blurred. Second,if the fruit has different colors at the edges,it can detect perfect boundary. Third,it processed directly in color space without any transformations that may lose much information. The proposed method has been applied to fruit shape detection with promising result.

关键词： Machine vision Shape detection Level set Fruit sorting

Nonphytate Phosphorus Requirement and Efficacy of a Genetically Engineered Yeast Phytase for Yellow Broilers at 22- to 42-d-Old Age

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Agricultural Sciences in China 2011年第2期10卷 304-311页

作者： JIANG Zong-yong ZHOU gui-lian LIN ying-cai JIANG Shou-qun LI De-zhong xi Peng-bin ZHANG Han-xing Key Laboratory of Animal Nutrition and Feed Science（South China） Ministry of Agriculture/Institute of Animal ScienceGuangdong Academy of Agricultural SciencesGuangzhou 510640P.R.China

An experiment was conducted to investigate the requirement of nonphytate phosphorus（nPP） and efficacy of a genetically engineered yeast phytase（PHY A） for Lingnan yellow broilers from 22-to 42-d-old age.A total of 1 320 1-d-old male chicks were randomly divided into 11 dietary treatment groups,which consisted of 4 replicate floor pens with 30 birds per *** control group（treatment 1） was fed with basal diet of nPP 0.08% without dicalcium phosphate or phytase *** levels of nPP were 0.16,0.24,0.32,0.40,0.48,and 0.56%,respectively,for treatments 2 to 7,through addition of dicalcium phosphate（chemistry grade） to the basal *** of treatments 8 to 11 were supplemented with PHY A at 200,400 and 600 U kg-1,a commercial phytase product（PHY B） at 400 U kg-1 level,*** birds in 0.32-0.56% nPP groups gained more than those of the other groups（P0.05）.The nPP supplementation significantly improved feed intake（P0.05）.The feed gain ratio was significantly decreased by 0.40% nPP diet compared to the control birds（P0.05）.The level of 0.48% nPP was required for optimum tibia *** additions of PHY A at 400 and 600 U kg-1 level and PHY B all significantly improved ADG（P0.05）,ADFI（P0.05）,and dry defatted tibia weight（P0.05）.Similarly,the percentage of tibia ash was increased by 600 U kg-1 PHY A supplementation（P0.05）.The requirement of nPP for maximal ADG and highest percentage tibia ash both was 0.40%.The phosphorus equivalency value of PHY A was estimated as 685 U kg-1 for male yellow broilers of 22-to 42-d-old age.

关键词： nonphytate phosphorus growth tibia ash genetically engineered yeast phytase phosphorus equivalency value yellow broilers

Hepatoid adenocarcinoma of the extrahepatic duct

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World Journal of Gastroenterology 2013年第22期19卷 3524-3527页

作者： Yu Wang ying-ying Liu gui-Ping Han Department of Pathology the 2 nd Affiliated Hospital of Harbin Medical University

Hepatoid carcinoma is a unique type of extrahepatic tumor associated with hepatic differentiation and displays the morphological and functional features of hepatocellular carcinoma. Hepatoid carcinoma of the extrahepatic duct has rarely been reported in the literature. We report a 62-year-old man who presented with epigastric discomfort, xanthochromia, dull pain of the right shoulder, nausea and pruitus. Microscopic examination of the extrahepatic duct indicated that the tumor was primarily composed of "hepatoid cells", which were characterized by an eosinophilic cytoplasm, enlarged nucleus and prominent nucleoli. The cells were arranged in nests or proliferated in a trabecular pattern. Immunohistochemistry indicated that the tumor cells were positive for hepatocyte paraffin 1 and cytokeratins 8 and 18. Based on these findings, this case was diagnosed as hepatoid carcinoma of the extrahepatic duct.

关键词： Extrahepatic bile ducts Hepatocellular Adenocarcinoma Immunohistochemistry Surgical pathology Differential diagnosis

Nonlinear Dynamical Behavior in Neuron Model Based on Small World Network with Attack and Repair Strategy

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Communications in Theoretical Physics 2008年第4期49卷 965-970页

作者： YANG Qiu-ying ZHANG ying-Yue ZHANG gui-Qing CHEN Tian-Lun Department of Physics Nankai University Tianjin 300071 China

In this paper, we investigate the effect due to the change of topology structure of network on the nonlinear dynamical behavior, by virtue of the OFC neuron evolution model with attack and repair strategy based on the small world. In particular, roles of various parameters relating to the dynamical behavior are carefully studied and analyzed. In addition, the avalanche and EEC-like wave activities with attack and repair strategy are also explored in detail in this work.

关键词： attack repair self-organized criticality small world network

Changes in sea ice kinematics in the Arctic outflow region and their associations with Arctic Northeast Passage accessibility

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Acta Oceanologica Sinica 2019年第8期38卷 101-110页

作者： Dawei gui xiaoping Pang Ruibo Lei xi Zhao Jia Wang Chinese Antarctic Center of Surveying and Mapping Wuhan University Wuhan 430079 China MNR Key Laboratory for Polar Science Polar Research Institute of China Shanghai 200136 China National Oceanic and Atmospheric Administration Great Lakes Environmental Research Laboratory Ann Arbor 48108-9719 USA

Amplification of climate warming in the Arctic is causing a dramatic retreat of sea ice, which means the Arctic sea routes are becoming increasingly accessible. This study used a satellite-derived sea ice motion product to quantify the kinematic features of sea ice in the Arctic outflow region which specially referred to the Fram Strait and to the north of the Northeast Passage(NEP). An observed trend of increased southward sea ice displacement from the central Arctic to the Fram Strait indicated enhancement of the Transpolar Drift Stream(TDS). In the regions to the north of the NEP, the long-term trend of northward sea ice speed in the Kara sector was +0.04 cm/s per year in spring. A significant statistical relationship was found between the NEP open period and the northward speed of the sea ice to the north of the NEP. The offshore advection of sea ice could account for the opening of sea routes by 33% and 15% in the Kara and Laptev sectors, respectively. The difference in sea level pressure across the TDS,i.e., the Central Arctic Index(CAI), presented more significant correlation than for the Arctic atmospheric Dipole Anomaly index with the open period of the NEP, and the CAI could explain the southward displacement of sea ice toward the Fram Strait by more than 45%. The impact from the summer positive CAI reinforces the thinning and mechanical weakening of the sea ice in the NEP region, which improves the navigability of the NEP.

关键词： sea ice Arctic Northeast Passage Transpolar Drift Stream atmospheric circulation indices

One-dimensional sp carbon:Synthesis,properties,and modifications

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Chinese Physics B 2022年第12期31卷 567-589页

作者： Chao-Fan Lv xi-gui Yang Chong-xin Shan State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China University of Chinese Academy of Sciences Beijing 100049China Henan Key Laboratory of Diamond Optoelectronic Materials and Devices Key Laboratory of Material PhysicsMinistry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450052China

Carbyne,as the truly one-dimensional carbon allotrope with sp-hybridization,has attracted significant interest in recent years,showing potential applications in next-generation molecular devices due to its ultimate one-atom *** excellent properties of carbyne have been predicted,however,free-standing carbyne sample is extremely unstable and the corresponding experimental researches and modifications are under-developed compared to other known carbon *** synthesis of carbyne has been slowly developed for the past ***,there have been several breakthroughs in in-situ synthesis and measurement of carbyne related materials,as well as the preparation of ultra-long carbon chains toward infinite *** progresses have aroused widespread discussion in the academic *** this review,the latest approaches in the synthesis of sp carbon are *** then discuss its extraordinary properties,including mechanical,electronic,magnetic,and optical properties,especially focusing on the regulations of these ***,we provide a perspective on the development of carbyne.

关键词： carbyne polyyne linear carbon chains