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High-Order Hamilton's Principle and the Hamilton's Principle of High-Order Lagrangian Function

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Communications in Theoretical Physics 2008年第2期49卷 297-302页

作者： ZHAO hong-Xia MA shan-Jun College of Physics and Communication Electronics Jiangxi Normal University Nanchang 330022 China

In this paper, based on the theorem of the high-order velocity energy, integration and variation principle, the high-order Hamilton＇s principle of general holonomic systems is given. Then, three-order Lagrangian equations and four-order Lagrangian equations are obtained from the high-order Hamilton＇s principle. Finally, the Hamilton＇s principle of high-order Lagrangian function is given.

关键词： Hamilton's principle high-order velocity energy integration and variation principle Lagrangian function

Infrared spectral evolution of carbon stars

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Research in Astronomy and Astrophysics 2010年第4期10卷 363-382页

作者： Pei-Sheng Chen Xiao-hong Yang hong-Guang shan National Astronomical Observatories /Yunnan Observatory and Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of SciencesKunming 650011China Department of Physics Chongqing UniversityChongqing 400044China

We collected almost all Highly Processed Data Products （HPDP） of ISO SWS01 spectra for the Galactic visual carbon stars,infrared carbon stars,extreme carbon stars and carbon-rich proto-planetary nebulae （PPNs）.Those infrared spectra are primarily analyzed and *** is shown that either spectral shapes/peaks,or main molecular/dust features are evidenced to change in the sequence of visual carbon stars,infrared carbon stars,extreme carbon stars and carbon-rich ***,in this sequence,continua are gradually changed from blue to red and locations of spectral peaks of continua are also gradually changed from short wavelengths to long *** addition,in this sequence,intensities of main molecular/dust features are also gradually changed from prominent in the short wavelengths to prominent in the long ***,from 2MASS and IRAS photometric data,the sequence is also *** in this paper strongly support the previous suggestion for the evolution sequence of carbon-rich objects in our Galaxy,that is the sequence of visual carbon stars → infrared carbon stars → extreme carbon stars → carbon-rich PPNs.

关键词： infrared:stars - stars:carbon - stars:late type

Mechanisms of phosphate removal from aqueous solution by blast furnace slag and steel furnace slag

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第1期9卷 125-132页

作者： Sheng-gao LU Shi-qiang BAI hong-dan shan College of Environmental and Resource Sciences Zhejiang University Hangzhou 310029 China

We report the adsorption of phosphate and discuss the mechanisms of phosphate removal from aqueous solution by burst furnace slag (BFS) and steel furnace slag (SFS). The results show that the adsorption of phosphate on the slag was rapid and the majority of adsorption was completed in 5~10 min. The adsorption capacity of phosphate by the slag was reduced dramatically by acid treatment. The relative contribution of adsorption to the total removal of phosphate was 26%~28%. Phosphate adsorption on BFS and SFS follows the Freundlich isotherm, with the related constants of k 6.372 and 1/n 1.739 for BFS, and of k 1.705 and 1/n 1.718 for SFS. The pH and Ca2+ concentration were decreased with the addition of phosphate, suggesting the formation of calcium phosphate precipitation. At pH 2.93 and 6.93, phosphate was desorbed by about 36%~43% and 9%~11%, respectively. These results indicate that the P adsorption on the slag is not completely reversible and that the bond between the slag particles and adsorbed phosphate is strong. The X-ray diffraction (XRD) patterns of BFS and SFS before and after phosphate adsorption verify the formation of phosphate salts (CaHPO4·2H2O) after adsorption process. We conclude that the removal of phosphate by BFS and SFS is related to the formation of phosphate calcium precipitation and the adsorption on hydroxylated oxides. The results show that BFS and SFS removed phosphate nearly 100%, indicating they are promising adsorbents for the phosphate removal in wastewater treatment and pollution control.

关键词： Phosphate removal Blast furnace slag (BFS) Steel furnace slag (SFS) Adsorption Precipitation

A Novel Biomass Supported Na_2CO_3 System for Flue Gas Desulfurization

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Chinese Chemical Letters 2002年第9期13卷 903-906页

作者： hong shan shanG Yuan KOU Fan YANG College of Chemistry&Molecular Engineering Peking UniversityBeijing 100871.

The breakthrough and stoichiometric SO2 adsorption efficiencies of a biomass supported Na2CO3 system (80 wt %Na2CO3/straw) have reached 48.9 % and 80.6 % respectively at a desulfurization temperature of 80C.

关键词： Straw adsorption efficiency SO2.

Higher-Order Lagrangian Equations of Higher-Order Motive Mechanical System

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Communications in Theoretical Physics 2008年第2期49卷 479-481页

作者： ZHAO hong-Xia MA shan-Jun SHI Yong College of Physics and Communication Electronics Jiangxi Normal University Nanchang 330022 China

In this paper, if the condition of variation δt = 0 is satisfied, the higher-order Lagrangian equations and higher-order Hamilton＇s equations, which show the consistency with the results of traditional analytical mechanics, are obtained from the higher-order Lagrangian equations and higher-order Hamilton＇s equations. The results can enrich the theory of analytical mechanics.

关键词： higher-order Lagrange function Hamilton function higher-order Lagrangian equation

An Infrared Photometric Study of Galaxies with Extragalactic H_2O Maser Sources

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Chinese Journal of Astronomy and Astrophysics 2007年第5期7卷 657-668页

作者： Pei-Sheng Chen Yi-Fei Gao hong-Guang shan National Astronomical Observatories / Yunnan Observatory Chinese Academy of Sciences Kunming 650011

All galaxies with extragalactic H2O maser sources observed so far are collected. With the 2MASS and the IRAS photometric data an infrared study is performed on those galaxies. By a comparison between the H2O maser detected sources and non-detected sources in the infrared it is indicated that infrared properties in the IRAS 12-25 #m and 60-100#m are important for producing H20 masers in galaxies. It is also found that the H20 maser galaxies with different nuclear activity types have rather different infrared properties mainly in the IRAS 12-60 μm region.

关键词： galaxies maser -- galaxies nuclei -- galaxies starburst -- infrared galaxies

Effects of transjugular intrahepatic portosystemic shunt using the Viatorr stent on hepatic reserve function in patients with cirrhosis

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World Journal of Clinical Cases 2021年第7期9卷 1532-1542页

作者： Xin Yao Hao Zhou shan Huang shan-hong Tang Jian-Ping Qin Department of Gastroenterology General Hospital of Western Theater CommandChengdu 610083Sichuan ProvinceChina Department of Gastroenterology Fengjie County People's HospitalChongqing 404600China Department of Digestive Medicine General Hospital of Western Theater CommandChengdu 610083Sichuan ProvinceChina Department of Digestion General Hospital of Western Theater CommandChengdu 610083Sichuan ProvinceChina

BACKGROUND As transjugular intrahepatic portosystemic shunt(TIPS)creation alters the hemodynamic status of the portal system,whether reduced portal blood supply affects the synthetic reserve function of the liver has been the focus of clinical *** the Viatorr stent entered the Chinese market in 2015,it has not yet been widely used in clinical ***,unlike other countries,the main cause of liver cirrhosis in China is viral ***,use of the Viatorr stent to establish a TIPS channel in patients with liver cirrhosis with differing etiologies is of great clinical *** To investigate factors affecting changes in liver reserve function after TIPS Viatorr stent *** Clinical data from 200 patients with cirrhotic portal hypertension who received TIPS treatment from March 2016 to March 2020 were analyzed *** patients were divided into three groups(A-C),according to their disease etiology,with post-hepatitis,autoimmune,and alcoholic cirrhosis,*** and postoperative liver and renal function and coagulation data,Child-Pugh grade,and model for end-stage liver disease(MELD)scores were *** analyses were performed using the t-test or chi-square *** incidence and of hepatic encephalopathy and patient survival were calculated using Kaplan-Meier *** The surgical success rate was 100%,with mean portal pressure gradient(mmHg)decreasing from 25.5±5.22 to 10.04±2.76(t=45.80;P<0.001).After 24 mo,the cumulative incidence of hepatic encephalopathy in group A was significantly lower than that in group B/C,while the cumulative survival rate was significantly higher in group A than in group B/C(P<0.05 for both).The Child-Pugh score for group A was 6.96±1.21,which was significantly better than those of groups B(7.42±0.99;t=-2.44;P=0.016)and C(7.52±1.12;t=-2.67;P=0.009).Further,the MELD score for group A(9.62±2.19)was significantly better than those for groups B(10.64

关键词： Portal shunt,transjugular intrahepatic Hypertension Viatorr stent Liver reserve function

Clinical efficacy of antiviral therapy in patients with hepatitis Brelated cirrhosis after transjugular intrahepatic portosystemic shunt

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World Journal of Gastroenterology 2021年第30期27卷 5088-5099页

作者： Xin Yao shan Huang Hao Zhou shan-hong Tang Jian-Ping Qin Department of Gastroenterology General Hospital of Western Theater CommandChengdu 610083Sichuan ProvinceChina Department of Gastroenterology Fengjie County People's HospitalChongqing 404600China

BACKGROUND As a country with a high burden of hepatitis B,China has about 86 million cases of hepatitis B virus infection,ranking the first in the ***,there are about 390000 deaths due to hepatitis B-related complications such as liver cirrhosis and liver cancer every ***,how to control portal hypertension,improve liver functional reserve,and reduce the incidence of hepatic failure and liver cancer in such patients is the focus of current clinical *** clinical study in our center suggested that at 24 mo after transjugular intrahepatic portosystemic shunt(TIPS),the liver functional reserve of patients with hepatitis B cirrhosis was better than that of patients with alcoholinduced and immune cirrhosis,which may be related to the effective etiological *** To investigate the clinical efficacy of three first-line antiviral drugs recommended by the guidelines of prevention and treatment for chronic hepatitis B in China(2019)in the treatment of patients with hepatitis B-related cirrhosis who had received a *** The clinical data of 137 patients with hepatitis B-related cirrhosis with portal hypertension after receiving TIPS at our centre between March 2016 and December 2020 were analysed *** to different anti-viral drugs,the patients were divided into entecavir(ETV)(n=70),tenofovir alafenamide fumarate(TAF)(n=32),and tenofovir disoproxil fumarate(TDF)(n=35)*** cumulative incidence of hepatic encephalopathy and hepatocellular carcinoma,survival,and changes in hepatic reserve function and glomerular filtration rate in patients treated with different antiviral drugs within 24 mo after surgery were *** At 24 mo after surgery,the Child-Pugh score in the TAF group(6.97±0.86)was lower than that in the TDF(7.49±0.82;t=-2.52,P=0.014)and ETV groups(7.64±1.17;t=-2.92,P=0.004).The model for end-stage liver disease score in the TAF group at 24 mo after surgery was 9.72±1.5,which was

关键词： Transjugular intrahepatic portosystemic shunt Hypertension Antiviral Hepatitis B-related cirrhosis Liver reserve function

Regulation of Cued Fear Expression via Corticotropin-ReleasingFactor Neurons in the Ventral Anteromedial Thalamic Nucleus

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Neuroscience Bulletin 2021年第2期37卷 217-228页

作者： Yin Lv Peng Chen Qing-hong shan Xin-Ya Qin Xiu-hong Qi Jiang-Ning Zhou Hefei National Laboratory for Physical Sciences at the Microscale School of Life SciencesChinese Academy of Sciences Key Laboratory of Brain Function and DiseasesUniversity of Science and Technology of ChinaHefei 230027China Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of SciencesShanghai 200031China

The ventral part of the anteromedial thalamic nucleus(AMv)is in a position to convey information to the cortico-hippocampal-amygdalar circuit involved in the processing of fear ***-releasing-factor(CRF)neurons are closely associated with the regulation of stress and ***,few studies have focused on the role of thalamic CRF neurons in fear *** the present study,using a conditioned fear paradigm in CRF transgenic mice,we found that the c-Fos protein in the AMv CRF neurons was significantly increased after cued fear *** activation of AMv CRF neurons enhanced cued fear expression,whereas inhibition had the opposite effect on the cued fear ***,chemogenetic manipulation of AMv CRF neurons did not affect fear acquisition or contextual fear *** addition,anterograde tracing of projections revealed that AMv CRF neurons project to wide areas of the cerebral cortex and the limbic *** results uncover a critical role of AMv CRF neurons in the regulation of conditioned fear memory.

关键词： Corticotropin-releasing-factor neurons Ventral anteromedial thalamic nucleus Cued fear expression Chemogenetics