Further Discussions on Various Problems Concerning "the State of Xindu was Styled the State of Guangchuan in the Second Year of Emperor Jing"——Doubled as a consultation with Mr. Wang Wentao

对班固与颜师古所处时代及立场加以综合分析,并通过对“广川国“沿革的准确爬梳,得出《汉书.地理志》中关于“景帝二年为广川国“的论断无疑是正确的,而后半句“宣帝甘露三年复故“实应为“甘露四年“。A comprehensive analysis is made of the times and standpoints of Ban Gu and Yan Shigu.Through the exact clarifications of the origin of the state of Guangchuan,it is concluded that the statement of "being styled the state of Guangchuan in the second year of Emperor Jing"is unquestionably correct,whereas the latter half of the sentence "being styled its original name in the third year of Emperor Xuan" should have been "in the fourth year of Emperor Xuan"

First Sagittarius A* Event Horizon Telescope Results. VIII. Physical Interpretation of the Polarized Ring

In a companion paper, we present the first spatially resolved polarized image of Sagittarius A* on event horizon scales, captured using the Event Horizon Telescope, a global very long baseline interferometric array operating at a wavelength of 1.3 mm. Here we interpret this image using both simple analytic models and numerical general relativistic magnetohydrodynamic (GRMHD) simulations. The large spatially resolved linear polarization fraction (24%–28%, peaking at ∼40%) is the most stringent constraint on parameter space, disfavoring models that are too Faraday depolarized. Similar to our studies of M87*, polarimetric constraints reinforce a preference for GRMHD models with dynamically important magnetic fields. Although the spiral morphology of the polarization pattern is known to constrain the spin and inclination angle, the time-variable rotation measure (RM) of Sgr A* (equivalent to ≈46° ± 12° rotation at 228 GHz) limits its present utility as a constraint. If we attribute the RM to internal Faraday rotation, then the motion of accreting material is inferred to be counterclockwise, contrary to inferences based on historical polarized flares, and no model satisfies all polarimetric and total intensity constraints. On the other hand, if we attribute the mean RM to an external Faraday screen, then the motion of accreting material is inferred to be clockwise, and one model passes all applied total intensity and polarimetric constraints: a model with strong magnetic fields, a spin parameter of 0.94, and an inclination of 150°. We discuss how future 345 GHz and dynamical imaging will mitigate our present uncertainties and provide additional constraints on the black hole and its accretion flow

Application of Infiltration-and-Saturation-Excess Runoff Model in Evaluationg the Benefits of Water Reduction by Soil and Water Conservation Practices

根据治理与尺度对黄土区产流模式的影响 ,建立用地评价水土保持的措施减水效益的超蓄产流模型 ,并将径流成份直接区分为地表径流和地下径流。同时着重介绍所建模型参数的率定及其在减水效益中的应用。在3个典型流域 (青阳岔、岔巴沟和小理河 )的应用结果表明 ,该模型效果良好 ,具有较好的应用前

流化床气相水解制备高纯二氧化钛

针对TiCl_4气相水解制备TiO_2粉体存在Cl含量高的问题,开展了流化床TiCl_4气相水解制备高纯TiO_2。系统地研究了反应条件、煅烧后处理对TiO_2粉体的纯度、形貌、晶型、比表面积的影响。结果表明,TiO_2内部结构和晶型的转变有利于Cl的脱除;提高煅烧温度使TiO_2的内部结构由多孔疏松向致密结构转变,晶型结构由锐钛矿相向金红石相转变,从而有利于提高Cl的脱除率;与空气煅烧比较,水蒸气气氛下的脱氯效率明显提高,归因于水蒸气与TiO_2颗粒内残余的多羟基氯化物进一步反应;氢气气氛下可进一步提高Cl的脱除率,800℃煅烧2 h后Cl的脱除率达到95%,主要归因于氢气还原TiO_2使其晶型结构发生转变。</p

一种提高免疫力和降血糖功能的富硒胶原蛋白与菊粉组合物

1.一种提高免疫力和降血糖功能的富硒胶原蛋白与菊粉组合物，其特征在于：包括富硒海藻多糖、鱼皮胶原蛋白、菊粉，所述组合物各组分重量比是富硒海藻多糖：鱼皮胶原蛋白：菊粉为0.77～10：40～60：59.23～30。2.根据权利要求1所述的富硒胶原蛋白与菊粉组合物，其特征在于：所述富硒海藻多糖中硒的含量为0.5%～0.8%。3.根据权利要求2所述的富硒胶原蛋白与菊粉组合物，其特征在于：所述富硒海藻多糖是按照下述方法制备的：将硫酸酯海藻多糖与亚硒酸钠按每100克硫酸酯海藻多糖加667ml～1000ml浓度为5%亚硒酸钠溶液的比例，在PH=1～3的酸性条件下，60～90℃反应，反应结束后用乙醇沉淀，过滤，得到富硒海藻多

一种酸性土壤改良剂及其用途

本发明是一种酸性土壤改良剂，其特征在于：它以海藻酸钠生产过程中产生的固体海带渣为原料，经干燥、粉碎，制成海带渣粉即为酸性土壤改良剂。本发明酸性土壤改良剂作为原料具备改良酸性土壤的用途；使用时，先测定待改良土壤的酸度，根据土壤酸度确定酸性土壤改良剂的投入量；然后将酸性土壤改良剂投入待改良土壤中与土壤混合均匀。本发明充分利用海带渣中富含碱金属元素和纤维素、蛋白质、珍珠岩、硅藻土、活性炭等成分，具有富含各种金属离子，纤维素特点，同时具有中和酸性物质的能力，它是一种营养性酸性土壤改良剂，既有利于降低酸性土壤的酸度，又可以变废为宝，减少环境的污染，因此是一种优良的酸性土壤改良剂，还可使土壤更加肥沃

Process for extracting proteins and dietary fibers by utilizing kelp residues

一种利用海带渣提取蛋白质和膳食纤维的工艺，其特征在于：取海带加工过程中产生的固体残渣处理得海带渣粉；将海带渣粉投入碱性溶液中进行浸泡搅拌处理；对处理物料进行压滤得碱处理滤液和碱处理滤渣；向碱处理滤渣中加入盐酸溶液进行浸泡搅拌处理，对处理物料进行压滤得酸处理滤渣和酸处理滤液，将酸处理滤液与碱处理滤液合并得酸碱液；调节酸碱液的pH，添加甲壳素絮凝剂，放置，在酸碱液底部形成蛋白质沉淀；离心收集蛋白质沉淀，干燥得产品粗蛋白粉；取酸处理滤渣，用漂白剂溶液进行漂白，漂白后进行过滤、水洗、干燥处理，即得到产品膳食纤维。它工艺简单合理，有效地对海带渣进行综合利用，可以将海带固形物的利用率提高到45％以上

The effects of light intensity to the oxygen concentration of internal thallus of Enteromorpha prolifera

以烟台海域定生浒苔为研究对象,采用光暗转换法,研究了不同光强条件下浒苔充气叶状体内部氧气浓度的变化。结果表明,浒苔充气叶状体内部气体成分中含有氧气,其浓度在360μmol/m2.s光强下达到最高值且保持稳定,光暗转换法显示其最高稳态到最低稳态的过渡仅需约10 s,此外,最低稳态的氧浓度仍高于水体饱和溶氧浓度。

光强对浒苔充气叶状体内氧气浓度的影响

以烟台海域定生浒苔为研究对象,采用光暗转换法,研究了不同光强条件下浒苔充气叶状体内部氧气浓度的变化.结果表明,浒苔充气叶状体内部气体成分中含有氧气,其浓度在360μmol/m2.s光强下达到最高值且保持稳定,光暗转换法显示其最高稳态到最低稳态的过渡仅需约10 s,此外,最低稳态的氧浓度仍高于水体饱和溶氧浓