For a long time spleen has been an important field of study for researchers.However,details about changes of microscopic structure in spleen during the fetal period are far less available in literature.Our goals were ...For a long time spleen has been an important field of study for researchers.However,details about changes of microscopic structure in spleen during the fetal period are far less available in literature.Our goals were to determine distribution of white pulp as well as its relationship with blood vessels and to observe development and distribution of blood vessels and arrangement of CD4+and CD8+lymphocytes.The study was carried out on 16 specimens of fetal spleens.After standard histological hematoxylin and eosin(H&E)staining,the specimens were stained with immunohistochemical methods.Antibodies for CD4+,CD8+and vascular endothelial cells were used.Qualitative,semi-quantitative and quantitative analyses were performed.The results were statistically analyzed and graphically presented.By the 19th week of gestation lymphocytes can be found in spleen.The 24th week of gestation is the period of the formation of a white pulp of the spleen with centrally placed blood vessels in the follicles.Also,during this week the arterioles were completely surrounded by the CD4+lymphocytes.The number of arterioles in spleen increases during fetal development.With the increase of gestational age of the fetus,lymphatic tissue in the parenchyma of the spleen increases,as well as the number of the arterioles,while the number of capillary blood vessels decreases.展开更多
The Soda-AQ pulps were made from reed pretreated by white rot fungi Panus conchatus, Cyathus stercoreus and Pleurotus florida respectively. It was found that kappa number decreased and the brightness increased for Sod...The Soda-AQ pulps were made from reed pretreated by white rot fungi Panus conchatus, Cyathus stercoreus and Pleurotus florida respectively. It was found that kappa number decreased and the brightness increased for Soda-AQ pulps from the reed treated by Pleurotus florida and Panus conchatus, but it was reverse for the pulp from reed treated by Cyathus stercoreus. The result indicated that white rot fungi Pleurotus florida and Panus conchatus were selective to degrade lignin in reed, which were good for biopulping, but Cyathus stercoreus was preferential to degrade cellulose, which was not good for biopulping.展开更多
In the paper, differences between the juvenile Triploid Chinese White Poplar (TCWP) in saline soil and 5-year TCWP in normal soil are compared in terms of their APMP-pulping properties. The results show that the salin...In the paper, differences between the juvenile Triploid Chinese White Poplar (TCWP) in saline soil and 5-year TCWP in normal soil are compared in terms of their APMP-pulping properties. The results show that the saline planting environment does not show obvious effects on pulping properties of juvenile TCWP.展开更多
通过搭建厌氧-好氧生化反应装置,研究了白水和清水两种不同水源稀释桉木化机浆废水预处理方法对废水生化处理效果的影响。结果显示,在较低的进水负荷下(9 kg COD/m^(3)),两种预处理方法厌氧段的去除率相近,约60%,好氧段白水实验组去除...通过搭建厌氧-好氧生化反应装置,研究了白水和清水两种不同水源稀释桉木化机浆废水预处理方法对废水生化处理效果的影响。结果显示,在较低的进水负荷下(9 kg COD/m^(3)),两种预处理方法厌氧段的去除率相近,约60%,好氧段白水实验组去除率可达50%,清水实验组去除率在40%以下;在较高进水负荷下(15 kgCOD/m^(3)),白水实验组厌氧段去除率可达60%,而清水实验组厌氧去除率仅52%,好氧段白水实验组去除率与低负荷时相近,但是清水实验组去除率进一步降低至30%。废水可生化性测试结果显示,清水稀释化机浆废水并不能提升化机浆废水中可生化有机污染物的比例,导致了生化反应后出水水质不如白水稀释的效果好。展开更多
文摘For a long time spleen has been an important field of study for researchers.However,details about changes of microscopic structure in spleen during the fetal period are far less available in literature.Our goals were to determine distribution of white pulp as well as its relationship with blood vessels and to observe development and distribution of blood vessels and arrangement of CD4+and CD8+lymphocytes.The study was carried out on 16 specimens of fetal spleens.After standard histological hematoxylin and eosin(H&E)staining,the specimens were stained with immunohistochemical methods.Antibodies for CD4+,CD8+and vascular endothelial cells were used.Qualitative,semi-quantitative and quantitative analyses were performed.The results were statistically analyzed and graphically presented.By the 19th week of gestation lymphocytes can be found in spleen.The 24th week of gestation is the period of the formation of a white pulp of the spleen with centrally placed blood vessels in the follicles.Also,during this week the arterioles were completely surrounded by the CD4+lymphocytes.The number of arterioles in spleen increases during fetal development.With the increase of gestational age of the fetus,lymphatic tissue in the parenchyma of the spleen increases,as well as the number of the arterioles,while the number of capillary blood vessels decreases.
文摘The Soda-AQ pulps were made from reed pretreated by white rot fungi Panus conchatus, Cyathus stercoreus and Pleurotus florida respectively. It was found that kappa number decreased and the brightness increased for Soda-AQ pulps from the reed treated by Pleurotus florida and Panus conchatus, but it was reverse for the pulp from reed treated by Cyathus stercoreus. The result indicated that white rot fungi Pleurotus florida and Panus conchatus were selective to degrade lignin in reed, which were good for biopulping, but Cyathus stercoreus was preferential to degrade cellulose, which was not good for biopulping.
文摘In the paper, differences between the juvenile Triploid Chinese White Poplar (TCWP) in saline soil and 5-year TCWP in normal soil are compared in terms of their APMP-pulping properties. The results show that the saline planting environment does not show obvious effects on pulping properties of juvenile TCWP.
基金国家重点研发计划项目“生物造纸技术及产业示范”课题5:“造纸废水零排放关键技术及产业示范”(项目编号:2022Y F C2105505)广西八桂学者专项(N o.2019A33)广西科技基地和人才专项,项目名称:广西环保技术装备科技成果转化中试研究基地建设(项目编号:桂科AD23023006)。
文摘通过搭建厌氧-好氧生化反应装置,研究了白水和清水两种不同水源稀释桉木化机浆废水预处理方法对废水生化处理效果的影响。结果显示,在较低的进水负荷下(9 kg COD/m^(3)),两种预处理方法厌氧段的去除率相近,约60%,好氧段白水实验组去除率可达50%,清水实验组去除率在40%以下;在较高进水负荷下(15 kgCOD/m^(3)),白水实验组厌氧段去除率可达60%,而清水实验组厌氧去除率仅52%,好氧段白水实验组去除率与低负荷时相近,但是清水实验组去除率进一步降低至30%。废水可生化性测试结果显示,清水稀释化机浆废水并不能提升化机浆废水中可生化有机污染物的比例,导致了生化反应后出水水质不如白水稀释的效果好。
