L1范数约束是目前稀疏地震反演比较常用的正则化方法,但利用L1范数并不能得到最优的稀疏解。为了进一步的得到更稀疏的结果,引入了一种基于Lp稀疏约束和交替方向乘子算法的波阻抗反演方法。从正则化方法出发,采用了比L1范数更为稀疏的L...L1范数约束是目前稀疏地震反演比较常用的正则化方法,但利用L1范数并不能得到最优的稀疏解。为了进一步的得到更稀疏的结果,引入了一种基于Lp稀疏约束和交替方向乘子算法的波阻抗反演方法。从正则化方法出发,采用了比L1范数更为稀疏的Lp范数对目标函数稀疏约束,在此基础上,加入了初始模型约束,旨在得到具有较高精度以及稳定性的反演结果。为了对Lp拟范数这类非凸优化问题进行求解,选择使用交替方向乘子算法(Alternating Direction Method of Multipliers),将目标函数分解为多个可以求解的子目标函数。为了验证反演方法的稳定性和实用性,分别选择了理论模型和实际数据对反演方法进行了测试,得到了较高精度的缝洞型储层预测结果。展开更多
目的:由连梅汤(LMD)对脂多糖(LPS)诱导的脓毒症小鼠回肠屏障及肝肺损伤的保护作用的研究。方法:采用随机方式,将C57/6J雄性小鼠分为对照组(CON组)、LPS模型组(LPS组)和连梅汤治疗组(LMD组),每组各6只。适应性喂养7天后,分别经口给予生...目的:由连梅汤(LMD)对脂多糖(LPS)诱导的脓毒症小鼠回肠屏障及肝肺损伤的保护作用的研究。方法:采用随机方式,将C57/6J雄性小鼠分为对照组(CON组)、LPS模型组(LPS组)和连梅汤治疗组(LMD组),每组各6只。适应性喂养7天后,分别经口给予生理盐水与治疗剂量的连梅汤(LMD) 21天。第22天,PBS注入对照组腹腔,另两组LPS注入5 mg/kg腹腔,建立脓毒症模型小鼠。腹腔注射24小时后进行回肠和肝、肺组织的收集。用HE染色组织病理鉴定;通过RT-qPCR检测回肠屏障因子水平(ZO-1, Occludin)和肝肺组织炎性因子(IL-1α, IL-8, TNF-α)。结果LPS组与CON相比,体重下降明显(n = 6;P β、IL-8、TNF-α)水平(n = 6;P Objective: The protective effect of Lianmei Decoction on the intestine was studied to the intestinal barrier, liver, and lung damage caused by lipopolysaccharide (LPS) in septic mice. Methods: C57/6J male mice were randomly assigned to the control group (CON group), LPS model group (LPS group), and Lianmei Decoction treatment group (LMD group), with 6 mice in each group. After 7 days of adaptive feeding, normal saline and a therapeutic dose of LMD were given orally for 21 days. In the 22 days of the study, PBS was injected intraperitoneally into the CON group, and 5 mg/kg LPS was administered intraperitoneally to the remaining two groups to create a sepsis mouse model. Ileum, liver, and lung tissues were gathered 24 hours after intraperitoneal injection. Histopathological examination was done using HE staining;the amounts of ileal barrier factors (ZO-1, Occludin) and inflammatory factors (IL-1β, IL-8, TNF-α) in liver and lung tissues were detected by RT-qPCR. Results: Compared with the CON group, the body weight of the LPS group decreased dramatically (n = 6;P β, IL-8, TNF-a) in liver and lung tissues (n = 6;P < 0.05), reduce the pathological damage of liver and pulmonary tissue. Conclusion: Lianmei Decoction can effectively improve ileal barrier damage, liver and lung injury, and inflammatory imbalance in LPS-induced sepsis mice.展开更多
文摘L1范数约束是目前稀疏地震反演比较常用的正则化方法,但利用L1范数并不能得到最优的稀疏解。为了进一步的得到更稀疏的结果,引入了一种基于Lp稀疏约束和交替方向乘子算法的波阻抗反演方法。从正则化方法出发,采用了比L1范数更为稀疏的Lp范数对目标函数稀疏约束,在此基础上,加入了初始模型约束,旨在得到具有较高精度以及稳定性的反演结果。为了对Lp拟范数这类非凸优化问题进行求解,选择使用交替方向乘子算法(Alternating Direction Method of Multipliers),将目标函数分解为多个可以求解的子目标函数。为了验证反演方法的稳定性和实用性,分别选择了理论模型和实际数据对反演方法进行了测试,得到了较高精度的缝洞型储层预测结果。
文摘目的:由连梅汤(LMD)对脂多糖(LPS)诱导的脓毒症小鼠回肠屏障及肝肺损伤的保护作用的研究。方法:采用随机方式,将C57/6J雄性小鼠分为对照组(CON组)、LPS模型组(LPS组)和连梅汤治疗组(LMD组),每组各6只。适应性喂养7天后,分别经口给予生理盐水与治疗剂量的连梅汤(LMD) 21天。第22天,PBS注入对照组腹腔,另两组LPS注入5 mg/kg腹腔,建立脓毒症模型小鼠。腹腔注射24小时后进行回肠和肝、肺组织的收集。用HE染色组织病理鉴定;通过RT-qPCR检测回肠屏障因子水平(ZO-1, Occludin)和肝肺组织炎性因子(IL-1α, IL-8, TNF-α)。结果LPS组与CON相比,体重下降明显(n = 6;P β、IL-8、TNF-α)水平(n = 6;P Objective: The protective effect of Lianmei Decoction on the intestine was studied to the intestinal barrier, liver, and lung damage caused by lipopolysaccharide (LPS) in septic mice. Methods: C57/6J male mice were randomly assigned to the control group (CON group), LPS model group (LPS group), and Lianmei Decoction treatment group (LMD group), with 6 mice in each group. After 7 days of adaptive feeding, normal saline and a therapeutic dose of LMD were given orally for 21 days. In the 22 days of the study, PBS was injected intraperitoneally into the CON group, and 5 mg/kg LPS was administered intraperitoneally to the remaining two groups to create a sepsis mouse model. Ileum, liver, and lung tissues were gathered 24 hours after intraperitoneal injection. Histopathological examination was done using HE staining;the amounts of ileal barrier factors (ZO-1, Occludin) and inflammatory factors (IL-1β, IL-8, TNF-α) in liver and lung tissues were detected by RT-qPCR. Results: Compared with the CON group, the body weight of the LPS group decreased dramatically (n = 6;P β, IL-8, TNF-a) in liver and lung tissues (n = 6;P < 0.05), reduce the pathological damage of liver and pulmonary tissue. Conclusion: Lianmei Decoction can effectively improve ileal barrier damage, liver and lung injury, and inflammatory imbalance in LPS-induced sepsis mice.
