A family of high_order accuracy explicit difference schemes for solving 2_dimension parabolic P.D.E. are constructed. Th e stability condition is r=Δt/Δx 2=Δt/Δy 2【1/2 and the truncation err or is O(Δt 3+Δx...A family of high_order accuracy explicit difference schemes for solving 2_dimension parabolic P.D.E. are constructed. Th e stability condition is r=Δt/Δx 2=Δt/Δy 2【1/2 and the truncation err or is O(Δt 3+Δx 4).展开更多
AIM:To investigate cell cycle proteins in chronic hepatitis C virus infection in order to analyze their role in the process of hepatocyte transformation and to characterize their prognostic properties. METHODS:Subject...AIM:To investigate cell cycle proteins in chronic hepatitis C virus infection in order to analyze their role in the process of hepatocyte transformation and to characterize their prognostic properties. METHODS:Subjects of the current study included 50 cases of chronic hepatitis C(CHC) without cirrhosis,30 cases of CHC with liver cirrhosis(LC) ,and 30 cases of hepatitis C-related hepatocellular carcinoma(HCC) admitted to the Department of Hepato-Gastroenterology,Theodor Bilharz Research Institute(TBRI) ,Giza,Egypt.Fifteen wedge liver biopsies,taken during laparoscopic cholecystectomy,were also included as normal controls.Laboratory investigations including urine and stool analysis,liver function tests and prothrombin concentration;serologic markers for viral hepatitis and ultrasonography were done for all cases of the study together with immunohistochemical analysis using primary antibodies against Cyclin D1,Cyclin E,p21,p27 and Rb/p105 proteins. RESULTS:Normal wedge liver biopsies didn't express Cyclin E or Rb/p105 immunostaining but show positive staining for Cyclin D1,p21 and p27.Cyclin D1 expressed nuclear staining that was sequentially increased from CHC to LC(P<0.01) to HCC(P<0.001) cases;meanwhile,Cyclin E revealed nuclear positivity only in the case of HCCs patients that was directly correlated to Rb/p105 immuno-reactivity.The expression of p21 and p27 was significantly increased in CHC and LC cases compared to normal controls and HCCs with no significant difference between well-and poorlydifferentiated tumors.p21 showed only a nuclear pattern of staining,while,p27 presented with either cytoplasmic and/or nuclear reactivity in all studied cases.Correlation analysis revealed a direct relation between Cyclin D1 and p21 in CHC cases(P<0.001) ,between Cyclin D1 and Cyclin E in HCCs(P<0.01);however,an inverserelationship was detected between Cyclin D1 and p21 or p27(P<0.001) and between p21 and Rb/p105(P<0.05) in HCCs. CONCLUSION:Upregulation of Cyclin D1 in CHC plays a vital role in the development and differentiation of HCC;while,Cyclin E may be a useful marker for monitoring tumor behavior.p21 and p27 can be used as predictive markers for HCC.Furthermore,higher expression of Rb/p105 as well as inverse relation with p21 and histologic grades suggests its important role in hepatic carcinogenesis.展开更多
A class of two-level high-order accuracy explicit difference scheme for solving 3-D parabolic P.D.E is constructed. Its truncation error is (Δt2+Δx4) and the stability condition is r=Δt/Δx2=Δt/Δy2=Δt/Δz2≤1/6.
In this paper, we briefly go over the homogeneous 5D model field theory: from the 5D space-time inception, to its quantum field solutions given in terms of Higgs vacuum, filled with magnetic monopole bose fields of al...In this paper, we briefly go over the homogeneous 5D model field theory: from the 5D space-time inception, to its quantum field solutions given in terms of Higgs vacuum, filled with magnetic monopole bose fields of all energies. Then through the space dimension reduction projections, the Gell-Mann standard model was obtained as well as a quantum to Classical connection was made via introducing Bose distribution to the monopoles to obtain the Perelman entropy and Ricci Flow mappings. This provided us a picture to the creation of Astronomical objects, from galaxies to stars and planets. This method of splitting the monopole energy into ranges is extended to show that below the basic rest mass range of the electron and Quark, it still can be applied to explaining for the creation of the chemical elements periodic table. But perhaps the most interesting is in the lowest hundreds of Hz energy range, obtained from yet another 3 fold space symmetry breaking, into 2D × 1D, producing bio nitrogenous bases composed of 3 Carbon 12 in hexagon structures, due to preservation of the 1D monopole standing waves of this low frequencies. From that by imposing gauge changes the monopole states into DNA spectra. Since such spectra states retain the DLRO, it induces formation of charge carriers periodicity in a spherical bio cell.. It was then argued that due to cell’s surface proteins, the structure must contain partial filled VB, with “p” state hole density, and empty CB, separated from VB by a positive band gap. Such band structures resemble known HTC Cuprate ceramics. Since the HTC goes through a Superconductivity transition via the simultaneous bose exciton condensation, providing a Coulomb pressure, which reduces the band gap substantially, and induces the ODLRO transition of the hole density. The same obviously applies to the bio cells. Because of the near continuous exciton levels generated, a matching to the DNA spectra then can always occur by selective choices of proteins on the cell surface. Judging from a numerical study, we did years ago on YBCO, with doping. We found with a large enough VB hole density, the exciton induced superconducting gap can easily lead to <em>T</em><em>c</em> in the room temperature range. In fact by EMF excitation can increase the exciton pressure and trigger the ODLRO transition <em>T</em><em>c</em> upward. In fact, numerical results then suggest there do exist coherent EMF spectra from three key elements: Water, Carbon and Hydrogen, together with Oxygen, as studied over the years by numerous people, starting from Schr<span style="white-space:nowrap;">ö</span>dinger to most recently Geesink.展开更多
目的:基于指纹图谱和网络药理学方法,分析预测白花蛇舌草[Oldenlandia diffusa(Willd.)Roxb,ODWR]的质量标志物(quality markers,Q-Marker)。方法:利用HPLC建立ODWR指纹图谱,确认共有峰;通过对照品比对和HPLC-ESI-Q-TOF-MS对共有峰进行...目的:基于指纹图谱和网络药理学方法,分析预测白花蛇舌草[Oldenlandia diffusa(Willd.)Roxb,ODWR]的质量标志物(quality markers,Q-Marker)。方法:利用HPLC建立ODWR指纹图谱,确认共有峰;通过对照品比对和HPLC-ESI-Q-TOF-MS对共有峰进行鉴定;运用网络药理学筛选和分析ODWR共有成分及炎症、肿瘤作用靶点和通路,构建“药物-成分-靶点-通路”网络,预测ODWR潜在Q-Marker;使用Auto Dock Vina软件对ODWR潜在的Q-Marker与关键靶点进行分子对接验证。结果:槲皮素-3-O-[2-O-(6-O-E-阿魏酰基)-β-D-吡喃葡糖苷]-β-D-吡喃半乳糖苷、(E/Z)-6-O-香豆酰鸡屎藤次苷甲酯、(E/Z)-6-O-阿魏酰鸡屎藤次苷甲酯成分为ODWR潜在的Q-Marker,主要通过作用于PIK3R1、NFKB1、HRAS等靶点,调控Pathways in cancer、Proteoglycans in cancer、Focal adhesion等信号通路,发挥抗炎、抗肿瘤等作用。结论:槲皮素-3-O-[2-O-(6-O-E-阿魏酰基)-β-D-吡喃葡糖苷]-β-D-吡喃半乳糖苷、(E/Z)-6-O-香豆酰鸡屎藤次苷甲酯、(E/Z)-6-O-阿魏酰鸡屎藤次苷甲酯成分可作为ODWR潜在Q-Marker。本研究为ODWR质量控制和评价提供参考,同时也为其抗炎、抗肿瘤活性成分及作用机制研究奠定基础。展开更多
The structure and properties of peroxide crosslinked L D P Eand silane crosslinked L D P E were comparaed in gel content,equilibrium swelling ratio and high temperaturemodulus. The crosslinking densities of L D P Evul...The structure and properties of peroxide crosslinked L D P Eand silane crosslinked L D P E were comparaed in gel content,equilibrium swelling ratio and high temperaturemodulus. The crosslinking densities of L D P Evulcanizates were measured by the method ofhigh temperature modulus. When the two kinds of crosslinking L D P E’s gel contents aresimilar,the crosslinked densities of peroxide crosslinking L D P Eare obviously smaller thanthose of silane crosslinked L D P E. Using equilibrium swelling ratio or crosslinked density tocharacterizethe crosslinking degree of L D P Evulcanizates is more appropriate than using gelcontent. The Huggins parameter of L D P E/boiling benzene system was also determined as0 30 .展开更多
文摘A family of high_order accuracy explicit difference schemes for solving 2_dimension parabolic P.D.E. are constructed. Th e stability condition is r=Δt/Δx 2=Δt/Δy 2【1/2 and the truncation err or is O(Δt 3+Δx 4).
基金Supported by Theodor Bilharz Research Institute(Grant# 74D) in collaboration with the American University of Cairo
文摘AIM:To investigate cell cycle proteins in chronic hepatitis C virus infection in order to analyze their role in the process of hepatocyte transformation and to characterize their prognostic properties. METHODS:Subjects of the current study included 50 cases of chronic hepatitis C(CHC) without cirrhosis,30 cases of CHC with liver cirrhosis(LC) ,and 30 cases of hepatitis C-related hepatocellular carcinoma(HCC) admitted to the Department of Hepato-Gastroenterology,Theodor Bilharz Research Institute(TBRI) ,Giza,Egypt.Fifteen wedge liver biopsies,taken during laparoscopic cholecystectomy,were also included as normal controls.Laboratory investigations including urine and stool analysis,liver function tests and prothrombin concentration;serologic markers for viral hepatitis and ultrasonography were done for all cases of the study together with immunohistochemical analysis using primary antibodies against Cyclin D1,Cyclin E,p21,p27 and Rb/p105 proteins. RESULTS:Normal wedge liver biopsies didn't express Cyclin E or Rb/p105 immunostaining but show positive staining for Cyclin D1,p21 and p27.Cyclin D1 expressed nuclear staining that was sequentially increased from CHC to LC(P<0.01) to HCC(P<0.001) cases;meanwhile,Cyclin E revealed nuclear positivity only in the case of HCCs patients that was directly correlated to Rb/p105 immuno-reactivity.The expression of p21 and p27 was significantly increased in CHC and LC cases compared to normal controls and HCCs with no significant difference between well-and poorlydifferentiated tumors.p21 showed only a nuclear pattern of staining,while,p27 presented with either cytoplasmic and/or nuclear reactivity in all studied cases.Correlation analysis revealed a direct relation between Cyclin D1 and p21 in CHC cases(P<0.001) ,between Cyclin D1 and Cyclin E in HCCs(P<0.01);however,an inverserelationship was detected between Cyclin D1 and p21 or p27(P<0.001) and between p21 and Rb/p105(P<0.05) in HCCs. CONCLUSION:Upregulation of Cyclin D1 in CHC plays a vital role in the development and differentiation of HCC;while,Cyclin E may be a useful marker for monitoring tumor behavior.p21 and p27 can be used as predictive markers for HCC.Furthermore,higher expression of Rb/p105 as well as inverse relation with p21 and histologic grades suggests its important role in hepatic carcinogenesis.
文摘A class of two-level high-order accuracy explicit difference scheme for solving 3-D parabolic P.D.E is constructed. Its truncation error is (Δt2+Δx4) and the stability condition is r=Δt/Δx2=Δt/Δy2=Δt/Δz2≤1/6.
文摘In this paper, we briefly go over the homogeneous 5D model field theory: from the 5D space-time inception, to its quantum field solutions given in terms of Higgs vacuum, filled with magnetic monopole bose fields of all energies. Then through the space dimension reduction projections, the Gell-Mann standard model was obtained as well as a quantum to Classical connection was made via introducing Bose distribution to the monopoles to obtain the Perelman entropy and Ricci Flow mappings. This provided us a picture to the creation of Astronomical objects, from galaxies to stars and planets. This method of splitting the monopole energy into ranges is extended to show that below the basic rest mass range of the electron and Quark, it still can be applied to explaining for the creation of the chemical elements periodic table. But perhaps the most interesting is in the lowest hundreds of Hz energy range, obtained from yet another 3 fold space symmetry breaking, into 2D × 1D, producing bio nitrogenous bases composed of 3 Carbon 12 in hexagon structures, due to preservation of the 1D monopole standing waves of this low frequencies. From that by imposing gauge changes the monopole states into DNA spectra. Since such spectra states retain the DLRO, it induces formation of charge carriers periodicity in a spherical bio cell.. It was then argued that due to cell’s surface proteins, the structure must contain partial filled VB, with “p” state hole density, and empty CB, separated from VB by a positive band gap. Such band structures resemble known HTC Cuprate ceramics. Since the HTC goes through a Superconductivity transition via the simultaneous bose exciton condensation, providing a Coulomb pressure, which reduces the band gap substantially, and induces the ODLRO transition of the hole density. The same obviously applies to the bio cells. Because of the near continuous exciton levels generated, a matching to the DNA spectra then can always occur by selective choices of proteins on the cell surface. Judging from a numerical study, we did years ago on YBCO, with doping. We found with a large enough VB hole density, the exciton induced superconducting gap can easily lead to <em>T</em><em>c</em> in the room temperature range. In fact by EMF excitation can increase the exciton pressure and trigger the ODLRO transition <em>T</em><em>c</em> upward. In fact, numerical results then suggest there do exist coherent EMF spectra from three key elements: Water, Carbon and Hydrogen, together with Oxygen, as studied over the years by numerous people, starting from Schr<span style="white-space:nowrap;">ö</span>dinger to most recently Geesink.
文摘目的:基于指纹图谱和网络药理学方法,分析预测白花蛇舌草[Oldenlandia diffusa(Willd.)Roxb,ODWR]的质量标志物(quality markers,Q-Marker)。方法:利用HPLC建立ODWR指纹图谱,确认共有峰;通过对照品比对和HPLC-ESI-Q-TOF-MS对共有峰进行鉴定;运用网络药理学筛选和分析ODWR共有成分及炎症、肿瘤作用靶点和通路,构建“药物-成分-靶点-通路”网络,预测ODWR潜在Q-Marker;使用Auto Dock Vina软件对ODWR潜在的Q-Marker与关键靶点进行分子对接验证。结果:槲皮素-3-O-[2-O-(6-O-E-阿魏酰基)-β-D-吡喃葡糖苷]-β-D-吡喃半乳糖苷、(E/Z)-6-O-香豆酰鸡屎藤次苷甲酯、(E/Z)-6-O-阿魏酰鸡屎藤次苷甲酯成分为ODWR潜在的Q-Marker,主要通过作用于PIK3R1、NFKB1、HRAS等靶点,调控Pathways in cancer、Proteoglycans in cancer、Focal adhesion等信号通路,发挥抗炎、抗肿瘤等作用。结论:槲皮素-3-O-[2-O-(6-O-E-阿魏酰基)-β-D-吡喃葡糖苷]-β-D-吡喃半乳糖苷、(E/Z)-6-O-香豆酰鸡屎藤次苷甲酯、(E/Z)-6-O-阿魏酰鸡屎藤次苷甲酯成分可作为ODWR潜在Q-Marker。本研究为ODWR质量控制和评价提供参考,同时也为其抗炎、抗肿瘤活性成分及作用机制研究奠定基础。
文摘The structure and properties of peroxide crosslinked L D P Eand silane crosslinked L D P E were comparaed in gel content,equilibrium swelling ratio and high temperaturemodulus. The crosslinking densities of L D P Evulcanizates were measured by the method ofhigh temperature modulus. When the two kinds of crosslinking L D P E’s gel contents aresimilar,the crosslinked densities of peroxide crosslinking L D P Eare obviously smaller thanthose of silane crosslinked L D P E. Using equilibrium swelling ratio or crosslinked density tocharacterizethe crosslinking degree of L D P Evulcanizates is more appropriate than using gelcontent. The Huggins parameter of L D P E/boiling benzene system was also determined as0 30 .
