The growth period, population tiller dynamics, plant characters, paniclegrain structure, yielding ability and stress resistance of a wheat variety Heibaoshi 1 were studied using a two-factor split plot design to inves...The growth period, population tiller dynamics, plant characters, paniclegrain structure, yielding ability and stress resistance of a wheat variety Heibaoshi 1 were studied using a two-factor split plot design to investigate the effects of different density and fertilizer levels on individual development and yield of Heibaoshi 1 in riparian region of Jiangsu Province. In addition, high-yielding agronomic measures were explored through multiple non-linear regression analysis. The results showed that low density was not conducive to the formation of panicles, while high density affected grain number per panicle; low fertilizer level restricted individual development, while high fertilizer level affected grain number per panicle and grain weight and was prone to leading to lodging. Reasonable combination of density and fertilizer could coordinate individual development and balance panicle, grain and weight, thus achieving a high yield. The yield potential was highest （7 384.3 kg/hm2） under density of 239.6×104 basic seedlings/hm2 and N level of 237.7 kg/hm2. When the planting density ranged from 200×104 to 270×104 basic seedlings/hm2 and the N level ranged from 220 to 260 kg/hm2 or the density basic seedling number ranged from 210×104/hm2 to 260×104/hm2 and the N level ranged from 210 to 270 kg/hm2, the yield could exceed 7 200 kg/hm2.展开更多
A new mechanism to introduce the mass of gauge field in supersymmetric gauge theory is discussed. The model has the strict local gauge symmetry and supersymmetry. Because we introduce two vector superfields simulta...A new mechanism to introduce the mass of gauge field in supersymmetric gauge theory is discussed. The model has the strict local gauge symmetry and supersymmetry. Because we introduce two vector superfields simultaneously, the model contains a massive gauge field as well as a massless gauge field.展开更多
Based on the symbolic computation system Maple, the infinite-dimensional symmetry group of the （2＋1）- dimensional Sawada-Kotera equation is found by the classical Lie group method and the characterization of the gr...Based on the symbolic computation system Maple, the infinite-dimensional symmetry group of the （2＋1）- dimensional Sawada-Kotera equation is found by the classical Lie group method and the characterization of the group properties is given. The symmetry groups are used to perform the symmetry reduction. Moreover, with Lou＇s direct method that is based on Lax pairs, we obtain the symmetry transformations of the Sawada-Kotera and Konopelchenko Dubrovsky equations, respectively.展开更多
On the basis of a unified definition of the dual operation and the (anti )self dual operation, the connections of the su(2,2｜1) main cluster was used as the fundamental field variables to construct the self dual L...On the basis of a unified definition of the dual operation and the (anti )self dual operation, the connections of the su(2,2｜1) main cluster was used as the fundamental field variables to construct the self dual Lagrangian of conformal supergravity. A Yang Mill like Lagrangian is obtained and a new gauge theory of supergravity is put forward. The spatial projects of its spin connection are Ashtekar variables.展开更多
Objective To explore the pharmacodynamic mechanism of Fu Zi Li Zhong Decoction(FZLZD)in treating gastric ulcer and its effect on gastrointestinal microecology.Methods Rat gastric ulcer model was established by continu...Objective To explore the pharmacodynamic mechanism of Fu Zi Li Zhong Decoction(FZLZD)in treating gastric ulcer and its effect on gastrointestinal microecology.Methods Rat gastric ulcer model was established by continuous vinegar gavage.The experiment included normal group,model group,ranitidine group and FZLZD group.The animals were handled after intragastricing administration of corresponding clinical isodose drugs for 7 d.The rats’gastrointestinal histopathology was observed by HE staining.The expression of ZO-1 and Occludin mRNA in rat gastric tissue was detected by RT-PCR.The diversity of intestinal flora was analyzed by 16SrDNA sequencing.Results FZLZD can effectively improve gastric mucosal destruction,epithelial exfoliation,inflammatory cell infiltration,inflammatory substance exudation and edema in rats with gastric ulcer.FZLZD can effectively up-regulate the expression levels of ZO-1 and Occludin mRNA in gastric tissue of rats with gastric ulcer.The results of intestinal flora diversity showed that the diversity of intestinal flora in FZLZD group was significantly higher than that of model group.Conclusions FZLZD can regulate gastric ulcer by promoting the expression of ZO-1 and Occludin and improving the diversity of intestinal flora.展开更多
In [3], a vector space associate with a graph G: 'its cycle space' was described over the two element field Z2. Here we generalize the theory to the ring Z to compute 1-dimensional homology group of a given 2-...In [3], a vector space associate with a graph G: 'its cycle space' was described over the two element field Z2. Here we generalize the theory to the ring Z to compute 1-dimensional homology group of a given 2-complex with a combination of algebraic and graph-theoretic method.展开更多
During the early mid-1990s, a number of rural farmers across central China were employed to the unregulated plasma- selling-activity and many of them were infected by HIV-1. However, AIDS progression in the former blo...During the early mid-1990s, a number of rural farmers across central China were employed to the unregulated plasma- selling-activity and many of them were infected by HIV-1. However, AIDS progression in the former blood donors （FBDs） is various. The aim of this study is to assess human leukocyte antigen （HLA） class I allele distribution in FBDs and evaluate its association with HIV-1 infection and disease progression. A total of 353 FBDs were enrolled in the cohort including 294 ART na＇fve HIV-1 seropositive and 59 HIV-1 seronegative age-matched subjects. The viral load and CD4/CD8 T cell counts were assessed in all subjects. Compared with HIV-seropositive group, the frequency of HLA-A＊03 in control was significantly higher. After classifying the HLA-B alleles of the subjects according to the presence of Bw4/Bw6 serological epitopes, detri- mental effect of HLA Bw6/Bw6 homozygosity was also confirmed in the HIV-seropositive subjects. This study provides nov- el evidence on HLA class I allele distribution and association of HLA-A＊03 frequency with HIV-1 infection and viremia in the HIV-1 infected FBDs, which may throw light on intervention strategy for the HIV-1 infection and our understanding how host immunity and genetic background affect HIV infection and AIDS progression.展开更多
文摘The growth period, population tiller dynamics, plant characters, paniclegrain structure, yielding ability and stress resistance of a wheat variety Heibaoshi 1 were studied using a two-factor split plot design to investigate the effects of different density and fertilizer levels on individual development and yield of Heibaoshi 1 in riparian region of Jiangsu Province. In addition, high-yielding agronomic measures were explored through multiple non-linear regression analysis. The results showed that low density was not conducive to the formation of panicles, while high density affected grain number per panicle; low fertilizer level restricted individual development, while high fertilizer level affected grain number per panicle and grain weight and was prone to leading to lodging. Reasonable combination of density and fertilizer could coordinate individual development and balance panicle, grain and weight, thus achieving a high yield. The yield potential was highest （7 384.3 kg/hm2） under density of 239.6×104 basic seedlings/hm2 and N level of 237.7 kg/hm2. When the planting density ranged from 200×104 to 270×104 basic seedlings/hm2 and the N level ranged from 220 to 260 kg/hm2 or the density basic seedling number ranged from 210×104/hm2 to 260×104/hm2 and the N level ranged from 210 to 270 kg/hm2, the yield could exceed 7 200 kg/hm2.
文摘A new mechanism to introduce the mass of gauge field in supersymmetric gauge theory is discussed. The model has the strict local gauge symmetry and supersymmetry. Because we introduce two vector superfields simultaneously, the model contains a massive gauge field as well as a massless gauge field.
基金the State Key Basic Research Program of China under Grant No.2004CB318000
文摘Based on the symbolic computation system Maple, the infinite-dimensional symmetry group of the （2＋1）- dimensional Sawada-Kotera equation is found by the classical Lie group method and the characterization of the group properties is given. The symmetry groups are used to perform the symmetry reduction. Moreover, with Lou＇s direct method that is based on Lax pairs, we obtain the symmetry transformations of the Sawada-Kotera and Konopelchenko Dubrovsky equations, respectively.
文摘On the basis of a unified definition of the dual operation and the (anti )self dual operation, the connections of the su(2,2｜1) main cluster was used as the fundamental field variables to construct the self dual Lagrangian of conformal supergravity. A Yang Mill like Lagrangian is obtained and a new gauge theory of supergravity is put forward. The spatial projects of its spin connection are Ashtekar variables.
基金funding support from the National Natural Science Foundation of China (No. 81973670 and No. 81503445)Hunan Provincial Natural Science Foundation of China (No. 2016JJ2095)Hunan Province College Students Research Learning and Innovative Experiment Project (No. 2018-412)
文摘Objective To explore the pharmacodynamic mechanism of Fu Zi Li Zhong Decoction(FZLZD)in treating gastric ulcer and its effect on gastrointestinal microecology.Methods Rat gastric ulcer model was established by continuous vinegar gavage.The experiment included normal group,model group,ranitidine group and FZLZD group.The animals were handled after intragastricing administration of corresponding clinical isodose drugs for 7 d.The rats’gastrointestinal histopathology was observed by HE staining.The expression of ZO-1 and Occludin mRNA in rat gastric tissue was detected by RT-PCR.The diversity of intestinal flora was analyzed by 16SrDNA sequencing.Results FZLZD can effectively improve gastric mucosal destruction,epithelial exfoliation,inflammatory cell infiltration,inflammatory substance exudation and edema in rats with gastric ulcer.FZLZD can effectively up-regulate the expression levels of ZO-1 and Occludin mRNA in gastric tissue of rats with gastric ulcer.The results of intestinal flora diversity showed that the diversity of intestinal flora in FZLZD group was significantly higher than that of model group.Conclusions FZLZD can regulate gastric ulcer by promoting the expression of ZO-1 and Occludin and improving the diversity of intestinal flora.
文摘In [3], a vector space associate with a graph G: 'its cycle space' was described over the two element field Z2. Here we generalize the theory to the ring Z to compute 1-dimensional homology group of a given 2-complex with a combination of algebraic and graph-theoretic method.
基金supported by NIAID,NIH,USA(1 U19 AI51915-02)the National Basic Research Program of China(2006CB504200)National Natural Science Foundation of China(30623009)
文摘During the early mid-1990s, a number of rural farmers across central China were employed to the unregulated plasma- selling-activity and many of them were infected by HIV-1. However, AIDS progression in the former blood donors （FBDs） is various. The aim of this study is to assess human leukocyte antigen （HLA） class I allele distribution in FBDs and evaluate its association with HIV-1 infection and disease progression. A total of 353 FBDs were enrolled in the cohort including 294 ART na＇fve HIV-1 seropositive and 59 HIV-1 seronegative age-matched subjects. The viral load and CD4/CD8 T cell counts were assessed in all subjects. Compared with HIV-seropositive group, the frequency of HLA-A＊03 in control was significantly higher. After classifying the HLA-B alleles of the subjects according to the presence of Bw4/Bw6 serological epitopes, detri- mental effect of HLA Bw6/Bw6 homozygosity was also confirmed in the HIV-seropositive subjects. This study provides nov- el evidence on HLA class I allele distribution and association of HLA-A＊03 frequency with HIV-1 infection and viremia in the HIV-1 infected FBDs, which may throw light on intervention strategy for the HIV-1 infection and our understanding how host immunity and genetic background affect HIV infection and AIDS progression.
