Search

Your search keyword '"Li, Zhen‐Tian"' showing total 3 results
Start Over Author "Li, Zhen‐Tian"
3 results on '"Li, Zhen‐Tian"'

1. Spatial patterns of soil seed banks and their relationships with above‐ground vegetation in an arid desert.

Author

Luo, Chao, Guo, Xiao‐Ping, Feng, Chang‐Dong, Ye, Jin‐Peng, Li, Peng‐Fei, Li, Zhen‐Tian, and Jiménez‐Alfaro, Borja

Subjects
SOIL seed banks, DESERT plants, SHRUBS
Abstract

Questions: What are the characteristics of the spatial patterns of soil seed banks (SSBs) at local scales? How does the spatial distribution of SSBs relate to above‐ground vegetation? Location: The piedmont plain of the eastern slope of Gandur mountain, Wuhai, northwestern China. Methods: A plot of 50 m × 50 m square, divided into 100 quadrats (5 m × 5 m) and 100 subquadrats (1 m × 1 m), was prepared to conduct a field survey of vegetation and SSB sampling. We analyzed the spatial pattern of 196 samples at different scales and directions with geostatistical analysis. The relationship between above‐ground vegetation and SSB was quantified by integrating geostatistics, point pattern analysis, and spatial comparison (IGPS). Results: The SSB density in the study area was 404.5 ± 352 seeds·m−2. SSBs of shrub species and herbaceous species Ⅱ (occurring only below‐ground) had a moderate spatial autocorrelation, and their spatial dependence increased with increasing scale. The SSB of herbaceous species Ⅰ (occurring both above‐ground and below‐ground) had great spatial autocorrelation, and its spatial dependence showed an initial decrease and then increased. Furthermore, SSBs showed lower spatial heterogeneity in the prevailing wind direction than in other directions. The spatial patterns of SSBs of shrub species and herbaceous species Ⅰ correlated with shrubs within a specific range, but not with herbs, while the SSB of herbaceous species Ⅱ did not have a spatial relationship with above‐ground vegetation. Conclusion: The spatial pattern of SSBs had scale dependence features, which exhibited clustered distribution at a certain scale, and were significantly correlated with above‐ground shrubs. Therefore, we suggest subsampling larger quadrats with smaller sample units near shrubs in desert areas. Our workflow seems efficient for determining the spatial pattern of SSBs at medium small scale in arid areas. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

2. Study on the Correlations between Mineral Contents in Musculus Longissimus Dorsi and Meat Quality for Five Breeds of Pigs

Author

Li Xinjian, LI Zhen-tian, Wang Ming, Ren Guang-zhi, Chen Jun-feng, and Yin qing-qiang

Subjects
Musculus longissimus, Veterinary medicine, Animal science, General Veterinary, Significant difference, Animal Science and Zoology, Biology, Breed
Abstract

The correlations between mineral contents in musculus longissimus dorsi and meat quality for five breeds of pigs were studied in this experiment. Two imported breeds (Duroc and Yorkshires) and three local breeds (Huainan pig, Nanyang black pig, Queshan black pig) from Henan province of China were chosen in this trial. Ten 90 kg finishing pigs were selected randomly to slaughter from each breed. Mineral contents of K, Na, Ca, Fe, Mn, Cu and Zn in musculus longissimus dorsi were detected by atomic absorption spectrophotometry and their correlations with meat quality were also analyzed. The results showed : (1) Mn and protein contents had no significant difference among all the breeds (p>0.05), (2) K content in Duroc was higher than that in the other four breeds significantly (p

Published
2008

3. EA-D p45-IgG as a potential biomarker for nasopharyngeal carcinoma diagnosis

Author

Lin Zhang, Li-Zhen Tian, Hao Chen, Yao-Ling Luo, Wan-Li Liu, and Zhi-Ting Feng

Subjects
Adult, Male, Cancer Research, Pathology, medicine.medical_specialty, Herpesvirus 4, Human, Epidemiology, Enzyme-Linked Immunosorbent Assay, Biology, Antibodies, Viral, Gastroenterology, Western blot test, Western blot, Internal medicine, otorhinolaryngologic diseases, medicine, Biomarkers, Tumor, Humans, Antigens, Viral, Aged, Neoplasm Staging, medicine.diagnostic_test, Significant difference, Public Health, Environmental and Occupational Health, Healthy subjects, Nasopharyngeal Neoplasms, Middle Aged, medicine.disease, Serum samples, Control subjects, Prognosis, stomatognathic diseases, Oncology, Nasopharyngeal carcinoma, ROC Curve, Potential biomarkers, Case-Control Studies, Immunoglobulin G, Capsid Proteins, Female, Follow-Up Studies
Abstract

Aim: To identify new biomarkers for NPC diagnosis with an anti-EBV Western blot test kit. Methods: Serum samples from 64 NPC patients and healthy subjects with four specific VCA-IgA/EA-IgA profiles were tested with an anti-EBV Western blot test kit from EUROIMMUN AG. Proteins were quantified with scores of intensity visually assigned to the protein bands. The markers which showed statistical differences between the NPC and non-NPC subjects were further evaluated in another 32 NPC patients and 32 controls in comparison with established biomarkers including VCA-IgA, EA-IgA, EBV-related protein IgG, and EBV DNA. Results: Among the markers screened, EA-D p45-IgG showed a statistically significant difference ( p < 0.05) between NPC and non-NPC subjects with VCA-IgA positivy. In 32 VCA-IgA positive NPC patients and 32 control subjects, the diagnostic accuracy of EA-D p45-IgG was 78.1% with a positive predictive value of 77.8% and a negative predictive value of 78.6%. In the verification experiment, the specificity and sensitivity of EA-D p45-IgG were 75.0% and 90.6 %, respectively. Conclusions: EA-D p45-IgG might be a potential biomarker for NPC diagnosis, especially among VCA-IgA positive subjects.

Published
2014

Catalog

Books, media, physical & digital resources
See catalog results