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Guo Chun Li, Hua Dong Song, Qi Li, Shu Hai Bu
In Abies fargesii forests of the giant panda's habitats in Mt. Taibai, the spatial distribution patterns and interspecific associations of main tree species and their spatial associations with the understory flowering Fargesia qinlingensis were analyzed at multiple scales by univariate and bivaria-te O-ring function in point pattern analysis. The results showed that in the A. fargesii forest, the number of A. fargesii was largest but its population structure was in decline. The population of Betula platyphylla was relatively young, with a stable population structure, while the population of B...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Ya Nan Ruan, Sheng Xu, Long Guo, Ming Zhu Zhu, Cong Wang, Shu Yuan Li, Hong Yan Wang
By using the open top chambers (OTCs) fumigation method, this paper investigated the changes of foliar injury, level of reactive oxygen species (ROS), activities and gene expression of antioxidant enzymes in Ginkgo biloba leaves under different ozone (ambient ozone≈40, 80, 160, 200 nmol·mol-1 ) concentrations, in order to study the effects of elevated ozone (O3 ) concentrations on reactive metabolism. The results showed that the obvious foliar injuries were observed in 160 and 200 nmol·mol-1 O3 treatments, while no visible injury was observed in 80 nmol·mol-1 O3 and ambient O3 treatments...
November 2017: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Xi Hong, Ju Sheng Gao, Zun Zhang Luo, Xi Bai Zeng, Ling Yu Bai, Zhi Yong Luo, Ping Yi, Shu Ping Chen
The nitrogen (N) and phosphorus (P) balance was studied and the eco-economic benefits of N and P were evaluated for the paddy field in a red soil area, under the fertilization treatments of no fertilization (CK), chemical fertilizer (NPK), organic fertilizer (M), and chemical fertilizers combined with organic fertilizers (NPKM, NPM, NKM), based on the long-term experiment started in 1982, to optimize fertilizer application and reduce N and P losses. The results indicated that the slight N surplus (27.10 kg·hm-2 ) and P deficit (-6...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Shu Qing Ma, Xiao Hang Liu, Kui Cai Deng, Hu Jie Quan, Li Yuan Tong, Zhu Xiang Xi, Qing Rong Chai, Jun Yang
A low temperature treatment in rice booting key period was executed on the north slope of Changbai Mountains to construct the impact model of low temperature on rice shell rate, and to reveal the effects of low temperature at different stages of rice young panicle on seed setting. The results showed that effects of low temperature in the young ear formation stage on rice shell rate generally followed the logarithmic function, the lower the temperature was, the greater the temperature influence coefficient was, and the longer the low temperature duration was, the higher rice shell rate was...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Xue Gang Mao, Zi Han Du, Jia Qian Liu, Shu Xin Chen, Ji Yu Hou
Traditional field investigation and artificial interpretation could not satisfy the need of forest gaps extraction at regional scale. High spatial resolution remote sensing image provides the possibility for regional forest gaps extraction. In this study, we used object-oriented classification method to segment and classify forest gaps based on QuickBird high resolution optical remote sensing image in Jiangle National Forestry Farm of Fujian Province. In the process of object-oriented classification, 10 scales (10-100, with a step length of 10) were adopted to segment QuickBird remote sensing image; and the intersection area of reference object (RAor ) and intersection area of segmented object (RAos ) were adopted to evaluate the segmentation result at each scale...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Guo Zong, Xue Jiao Bai, Shu Yuan Zhang, Jun Qi Cai
We established a 4 hm2 (200 m×200 m) temperate secondary forest plot in the montane region of eastern Liaoning Province, China, and analyzed the spatial patterns and interspecific spatial associations of tree seedlings at scales of 0-50 m. The results showed that under complete spatial randomness null model, 95% of the species at the scale of 0-20 m showed a significant aggregation pattern, and 19 species at the scale of 0-16 m showed an aggregation pattern. The proportion of species exhibiting aggregated patterns decreased with the spatial scale...
January 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Shu-Min Li, Xiao-Ying Wang, Fan Liu, Xiu-Hong Yang
This study was aimed to explore the effect of angiotensin converting enzyme 2 (ACE2) agonist diminazene aceturate (DIZE) on acute lung injury (ALI) induced by limb ischemia-reperfusion (LIR) in mice. Male 8-week-old wild-type and hACE2 transgenic ICR mice were randomly divided into 6 groups (6 in each group), including wild-type control (W), wild-type model (WL), wild-type model with DIZE administration (WLD), transgenic control (T), transgenic model (TL), and transgenic model with DIZE administration (TLD) groups...
April 25, 2018: Sheng Li Xue Bao: [Acta Physiologica Sinica]
Changcheng Tang, Xingxing Jiang, Shu Guo, Mingjun Xia, Lijuan Liu, Xiaoyang Wang, Zheshuai Lin, Chuangtian Chen
A new fluorocarbonate, Na3Zn2(CO3)3F, was synthesized using a subcritical hydrothermal method. Na3Zn2(CO3)3F crystallizes in the space group C2/c with a sandwich-like framework in which the stacked [Zn(CO3)]∞ layers are connected with one another by bridging F atoms and [CO3] groups alternately. Interestingly, each Zn atom is surrounded by one F atom and four O atoms, forming a distorted [ZnO4F] trigonal bipyramid, which is observed for the first time in the carbonate system. Na3Zn2(CO3)3F has high transparency in a wide spectral region ranging from UV to mid IR with a short ultraviolet absorption edge (∼213 nm)...
April 25, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Hui Liu, Weilong Shang, Zhen Hu, Ying Zheng, Jizhen Yuan, Qiwen Hu, Huagang Peng, Xinyu Cai, Li Tan, Shu Li, Junmin Zhu, Ming Li, Xiaomei Hu, Renjie Zhou, Xiancai Rao, Yi Yang
Staphylococcus aureus is an important pathogen that produces abundant virulence factors, which cause various diseases that burden human health worldwide. The stress response regulon called sigma factor B (SigB) is a well-characterized global regulator that is involved in the regulation of S. aureus virulence, pigmentation, and biofilm formation. However, the regulatory network upon SigB in S. aureus is incompletely described. Here, we identified a novel substitution mutation, SigB(Q225P), which contributed the nonpigmented phenotype of S...
April 25, 2018: Emerging Microbes & Infections
Fong-Ci Lin, Chen-Yu Wang, Rung Ji Shang, Fei-Yuan Hsiao, Mei-Shu Lin, Kuan-Yu Hung, Jui Wang, Zhen-Fang Lin, Feipei Lai, Li-Jiuan Shen, Chih-Fen Huang
BACKGROUND: Traditional clinical surveillance relied on the results from clinical trials and observational studies of administrative databases. However, these studies not only required many valuable resources but also faced a very long time lag. OBJECTIVE: This study aimed to illustrate a practical application of the National Taiwan University Hospital Clinical Surveillance System (NCSS) in the identification of patients with an osteoporotic fracture and to provide a high reusability infrastructure for longitudinal clinical data...
April 24, 2018: Journal of Medical Internet Research
Shabbir Ahmed, Zhan Zhou, Jie Zhou, Shu-Qing Chen
No abstract text is available yet for this article.
April 21, 2018: Genomics, Proteomics & Bioinformatics
Shu-Wei Wu, Xifeng Liu, A Lee Miller, Yu-Shiuan Cheng, Ming-Long Yeh, Lichun Lu
In the present study, we fabricated non-toxic, injectable, and thermo-sensitive NIPAAm-g-chitosan (NC) hydrogels with thiol modification for introduction of disulfide cross-linking strategy. Previously, NIPAAm and chitosan copolymer has been proven to have excellent biocompatibility, biodegradability and rapid phase transition after injection, suitable to serve as cell carriers or implanted scaffolds. However, weak mechanical properties significantly limit their potential for biomedical fields. In order to overcome this issue, we incorporated thiol side chains into chitosan by covalently conjugating N-acetyl-cysteine (NAC) with carbodiimide chemistry to strengthen mechanical properties...
July 15, 2018: Carbohydrate Polymers
Ying Wang, Shirong Guo, Lei Wang, Liwei Wang, Xueying He, Sheng Shu, Jin Sun, Na Lu
BACKGROUND: High-temperature stress inhibited the growth of cucumber seedlings. Foliar spraying of 1.0 mmol·L- 1 exogenous spermidine (Spd) to the sensitive cucumber cultivar 'Jinchun No. 2' grown at high-temperature (42 °C/32 °C) in an artificial climate box improved the high-temperature tolerance. Although there have been many reports on the response of microRNAs (miRNAs) to high-temperature stress, the mechanism by which exogenous Spd may mitigate the damage of high-temperature stress through miRNA-mediated regulation has not been studied...
April 24, 2018: BMC Genomics
Mao-Ling Sheng, Shu-Ping Sun, Xi-Nan Wang, Hai-Wei Wu
A new genus, Verruca Sheng Sun gen. nov., of the ichneumonid tribe Atrophini, subfamily Banchinae is described for one new species, Verruca dentia Sheng Sun, sp. nov. The species was collected from Shandong and Jiangxi Provinces, situated near the northern border of the Oriental part of China. The new genus is placed within the existing key to genera. A key to the genera of Atrophini, with the apical portion of the ovipositor with ridges, is also provided.
April 23, 2018: Zootaxa
Qian Su, Bin Zheng, Chen-Yao Wang, Yun-Zhi Yang, Wen-Wen Luo, Shu-Min Ma, Xin-Hua Zhang, Dong Ma, Yan Sun, Zhan Yang, Jin-Kun Wen, Zhi-Xue Liu
BACKGROUND/AIMS: This study determined the role and mechanism of action of transcription factor EB (TFEB) in H2O2-induced neuronal apoptosis. METHODS: SH-SY5Y cells were treated with Akt inhibitor/activator and different concentrations of H2O2. Cell apoptosis was detected by flow cytometric analysis. Akt and TFEB phosphorylation and PARP cleavage were determined by Western blotting. HEK293T cells were transfected with different truncated TFEB mutants and HA-Akt-WT; SH-SY5Y cells were transfected with Flag-vector, Flag-TFEB, Flag-TFEB-S467A or Flag-TFEB-S467D; and TFEB interaction with Akt was determined by co-immunoprecipitation and GST pull-down assays...
April 19, 2018: Cellular Physiology and Biochemistry
Shu-Bo Zhang, Tie-Jun Liu, Guo-Hua Pu, Bao-Yong Li, Xiao-Zeng Gao, Xiao-Liang Han
BACKGROUND/AIMS: Ischemic heart disease is a leading cause of death in cardiovascular diseases, and microRNAs (miRs) have been reported to be potential therapeutic targets in heart disease. Herein, this study aims to investigate the effects of microRNA (miR)-374 on myocardial ischemia-reperfusion (I/R) injury in rat models pretreated with sevoflurane by targeting SP1 through the PI3K/Akt pathway. METHODS: SD rats were grouped into sham, I/R and sevoflurane + I/R (sevoflurane preconditioning and I/R) groups...
April 19, 2018: Cellular Physiology and Biochemistry
Yu-Jen Chen, Jong-Shyan Wang, Chih-Chin Hsu, Pyng-Jing Lin, Feng-Chun Tsai, Ming-Shien Wen, Chi-Tai Kuo, Shu-Chun Huang
Cerebral tissue oxygen saturation (SctO2) reflects cerebral perfusion and tissue oxygen consumption, which decline in some patients with heart failure with reduced ejection fraction (HFrEF) or stroke, especially during exercise. Its physiologic basis and clinical significance remain unclear. We aimed to investigate the association of SctO2 with oxygen transport physiology and known prognostic factors during both rest and exercise in patients with HFrEF or stroke. Thirty-four HFrEF patients, 26 stroke patients, and 17 healthy controls performed an incremental cardiopulmonary exercise test using a bicycle ergometer...
2018: PloS One
Mei Yang, Junfang Zhang, Shu Su, Bai Qin, Lihua Kang, Rongrong Zhu, Huaijin Guan
PURPOSE: Age-related cataract (ARC) is a leading cause of visual impairment and blindness worldwide. DNA damage and malfunction of DNA repair are believed to contribute to the pathogenesis of ARC. Aside from increasing age, the risk factors for ARC appear to be rather complex, and one or more gene variations could play critical roles in the diverse processes of ARC progression. This study aimed to investigate the combined effects of different genetic variants on ARC risk. METHODS: A cohort of 789 ARC patients and 531 normal controls from the Jiangsu Eye Study was included in this study...
2018: PloS One
Juan Cai, Hong-Yan Chen, Shu-Jie Peng, Jun-Ling Meng, Yan Wang, Yu Zhou, Xiao-Ping Qian, Xiu-Yuan Sun, Xue-Wen Pang, Yu Zhang, Jun Zhang
Ubiquitination and deubiquitination are important post-translational regulatory mechanisms responsible for fine tuning the antiviral signaling. In this study, we identified a deubiquitinase, the ubiquitin-specific peptidase 7/herpes virus associated ubiquitin-specific protease (USP7/HAUSP) as an important negative modulator of virus-induced signaling. Overexpression of USP7 suppressed Sendai virus and polyinosinic-polycytidylic acid and poly(deoxyadenylic-deoxythymidylic)-induced ISRE and IFN-β activation, and enhanced virus replication...
April 24, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
Shu-Jing Huang, Yun-Yun Tang, Hui-Min Liu, Gui-Xiang Tan, Xia Wang, Hao Zhang, Fan Yang, Shu Yang
OBJECTIVES: To determine the impact of age at diagnosis and other factors on survival in nasopharyngeal carcinoma (NPC). DESIGN, SETTING AND PARTICIPANTS: A retrospective, population-based cohort study of 3103 patients whose records were submitted to the Surveillance, Epidemiology, and End Results (SEER) database between 2004 and 2013. We evaluated the demographic and clinical characteristics of patients who were 20 years or older with a diagnosis of primary, non-metastatic NPC...
April 24, 2018: Clinical Otolaryngology
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