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14篇 您的检索式:作者名="XU Zongjun"
    题名 作者 年代 出处 被引量
1Degradation of corn stalk by the composite microbial system of MC1显示文摘MC1 的合成微生物引起的系统被用来降级玉米秸以便象 MC1 的细菌的作文一样决定降级的产品的性质。结果显示发酵肉汤的 pH 典型地代表由 MC1 的木质纤维素降级,在早阶段减少并且在降级的以后的阶段增加。微生物引起的生物资源在在降级以后的日子 3 上达到顶点。MC1 高效地降级了在将近 70% 的玉米秸在哪个期间它的纤维素内容在 71.2% 减少了,在 76.5% 的半纤维素和在 24.6% 的木质素。在发酵肉汤的水溶性的糖类(WSC ) 的内容在开始的三天期间日益增多地增加了,并且此后减少了,建议在降级过程的早阶段的 WSC 的累积。各种各样的不稳定的产品的全部的层次在降级以后在第三天内达到顶点,并且不稳定的产品的 7 种类型在发酵肉汤被检测。这些是乙醇,醋酸, 1,2-ethanediol, propanoic 酸, butanoic 酸, 3-methyl-butanoic 酸和甘油。六主要混合物是分析的份量上,每混合物的内容是乙醇(0.584 g/L ) ,醋酸(0.735 g/L ) , 1,2-ethanediol (0.772 g/L ) , propanoic 酸(0.026 g/L ) , butanoic 酸(0.018 g/L ) 和甘油(4.203 g/L ) 。基于 DNA 的 16S rDNA PCR-DGGE 分析,从文化答案收集的细菌的房间的描述证明在 MC1 的细菌的社区的作文从以前的研究与观察基本上与一致。这显示 MC1 的结构在不同木质纤维素材料的降级期间是很稳定的。GUO Peng WANG Xiaofen ZHU Wanbin YANG Hongyan CHENG Xu CUI Zongjun 2008Journal of Environmental Sciences2008,20,1:39
2Changes of nutrient concentrations and N:P:Si ratios and their possible impacts on the Huanghai Sea ecosystem显示文摘To investigate the impacts of nutrient concentrations and N:P:Si ratios on the ecosystem of the Huanghai Sea (Yellow Sea), the current status and long-term variation of nutrients concentrations and ratios as well as phytoplankton community structure in the Huanghai Sea were collected and analyzed. The results reveal great annual and seasonal fluctuations in the nutrient concentrations and N:P:Si ratios during 1998-2008 with no clear pattern observed in the whole region. Yet on a seasonal scale of spring and in the coastal regions such as the Jiaozhou Bay and Sanggou Bay, the increase of DIN concentration and N:P ratio as well as the decrease of phosphate and silicate concentrations and Si:N ratios were relatively significant. Many pelagic ecosystem changes have occurred concurrent with these changes of the nutrient regime, such as the recent increase of primary production, changes of phytoplankton chlorophyll a biomass and abundance, an increase of eutrophication, and occurrence of HABs. In addition, new trends in the variation of nutrients seem to be developing in some particular transect such as 36°N, which suggests that long-term and systematic ecosystem monitoring in the Huanghai Sea is necessary.FU Mingzhu WANG Zongling PU Xinming XU Zongjun ZHU Mingyuan 2012Acta Oceanologica Sinica2012,31,4:13
3Interspecies competition for nutrients between Prorocentrum donghaiense Lu and Skeletonema costatum(Grev.) Cleve in mesocosm experiments显示文摘Three mesocosm experiments were conducted in the East China Sea during blooms of Prorocentrum donghaiense Lu in May of 1998,2002 and 2003 to examine the role of nutrients in the formation of these harmful algae blooms(HABs).The results showed that there was interspecies competition between P.donghaiense and Skeletonema costatum(Grev.) Cleve.The cell number of P.donghaiense and S.costatum accounted for about 85% and 11% of the total cell number of phytoplankton respectively at the beginning of the experiment in May 1998.In May 2002,at the beginning of the experiment,the cell number of P.donghaiense accounted for 55%-66% of the total and S.costatum accounted for 32%-42%.The density of P.donghaiense and S.costatum was over 95% and 1%-5% respectively in May 2003.The results of these three mesocosm experiments showed that the dominant species in this specific community varied with different nutrient availability.Under low-phosphate conditions,the dominant species was P.donghaiense,while S.costatum became dominant in phosphate-replete cases.The average growth rate(1.08 d-1) of S.costatum in exponential growth phase was higher than that(0.39 d-1) of P.donghaiense.In the mesocosm,S.costatum predominated in the mesocosm by its rapid growth.When phosphorus was depleted,the cell number of S.costatum dropped rapidly,while P.donghaiense Lu decreased more slowly.The results from mesocosm experiment may explain why:(1) P.donghaiense bloom usually occurs in May,when phosphate concentration is low;(2) the bloom of S.costatum appears in early spring and summer time,when nutrients increase with increasing Changjiang River(Yangtze River) runoff;(3) the bloom of S.costatum is short and that of P.donghaiense Lu can last more than a month in the East China Sea.ZHU Mingyuan XU Zongjun LI Ruixiang WANG Zongling SHI Xiaoyong 2009Acta Oceanologica Sinica2009,28,1:10
4Use of Probiotics in Aquaculture显示文摘Diseases of cultured animal and environmental pollution are very important problems in aquaculture. The use of probiotics in aquaculture has more advantages than the use of antibiotics and chemicals in aquaculture. This review introduces the use and mechanisms of the probiotics in aquaculture.王祥红 Du Zongjun Chen Jixiang Li Yun Ji Weishang Xu Huaishu 2002High Technology Letters2002,8,3:6
5Modes of genetic adaptations underlying functional innovations in the rumen显示文摘The rumen is the hallmark organ of ruminants and hosts a diverse ecosystem of microorganisms that facilitates efficient digestion of plant fibers.We analyzed 897 transcriptomes from three Cetartiodactyla lineages:ruminants,camels and cetaceans,as well as data from ruminant comparative genomics and functional assays to explore the genetic basis of rumen functional innovations.We identified genes with relatively high expression in the rumen,of which many appeared to be recruited from other tissues.These genes show functional enrichment in ketone body metabolism,regulation of microbial community,and epithelium absorption,which are the most prominent biological processes involved in rumen innovations.Several modes of genetic change underlying rumen functional innovations were uncovered,including coding mutations,genes newly evolved,and changes of regulatory elements.We validated that the key ketogenesis rate-limiting gene(HMGCS2)with five ruminant-specific mutations was under positive selection and exhibits higher synthesis activity than those of other mammals.Two newly evolved genes(LYZ1 and DEFB1)are resistant to Gram-positive bacteria and thereby may regulate microbial community equilibrium.Furthermore,we confirmed that the changes of regulatory elements accounted for the majority of rumen gene recruitment.These results greatly improve our understanding of rumen evolution and organ evo-devo in general.Xiangyu Pan Yudong Cai Zongjun Li Xianqing Chen Rasmus Heller Nini Wang Yu Wang Chen Zhao Yong Wang Han Xu Songhai Li Ming Li Cunyuan Li Shengwei Hu Hui Li Kun Wang Lei Chen Bin Wei Zhuqing Zheng Weiwei Fu Yue Yang Tingting Zhang Zhuoting Hou Yueyang Yan Xiaoyang Lv Wei Sun Xinyu Li Shisheng Huang Lixiang Liu Shengyong Mao Wenqing Liu Jinlian Hua Zhipeng Li Guojie Zhang Yulin Chen Xihong Wang Qiang Qiu Brian PDalrymple Wen Wang Yu Jiang 2021Science China(Life Sciences)2021,64,1:3
6Changes of Coastal Wetland Ecosystems in the Yellow River Delta and Protection Countermeasures to Them显示文摘Coastal wetlands in the Yellow River Delta are typical new wetland ecosystems in warm temperate zone. In recent years, influenced by natural and human factors, these coastal wetlands in the Yellow River Delta have undergone changes of landscape fragmentation, vegetation degradation, pollution, species reduction, and harmful exotic species invasion. These changes have influenced sustainable and healthy development of marine economy of the Yellow River Delta. To protect natural ecological environment of the Yellow River Delta, the authors recommended that it should establish and improve policies, laws and regulations of wetland protection; carry out wetland resource investigation and assessment and monitoring; strengthen comprehensive protection and control of wetland; reduce wetland degradation and promote sustainable use of wetland.Guangzhou CUI Xuliang ZHANG Zhaohui ZHANG Zongjun XU 2013Asian Agricultural Research2013,5,1:2
7Fungal community associated with fermentation and storage of Fuzhuan brick-tea显示文摘Aiqing Xu Yuanliang Wang Jieyu Wen Ping Liu Ziyin Liu Zongjun Li 2011International Journal of Food Microbiology2011,,1:1
8The Effects of Shrimp Gut Probiotic Bacteria on the Shrimp Larvae (Penaeus Chinensis)显示文摘The survival rates of shrimp larvae in different stage are higher than those of control groups when probiotic bacteria strains X4B 1 and X1B 1 which are isolated from gut of adult shrimp are added into the little volume rearing sea water of shrimp larvae. The effects of probiotic bacteria are evaluated by challenge test (pathogenic bacteria Z 3G 2 isolated from disease shrimp larvae in the hatchery of Jimo town) and low salinity stress resistance tests on shrimp larvae, the survival rate and lengths of the shrimp larvae in the experiment are determined. Results indicate that 1. The survival rate, ability of resistant to low salinity, lengths of the delivered shrimp larvae are improved after the strains of probiotic bacteria, X4B 1 or X1B 1, are added into the rearing sea water of hatchery. 2. The addition of the probiotic bacteria could not influence the change of the bacteria number, NH3 N and COD value in the rearing sea water. 3. The probiotic bacteria used in the experiment have many enzymes such as Lipase, Amylase, Gelatinase and Lecithinase. These enzymes may help the probiotic bacteria to digest the food components fed to shrimp larvae and increase the digestive efficiency of post larvae. This may be one of the reasons why these probiotic bacteria are beneficial to the shrimp larvae.王祥红 Du Zongjun Li Huirong Li Yun Ji Weishang Xu Huaishu 2002High Technology Letters2002,8,4:1
9Positively drifting structures during the 18 March 2003 solar flare 显示文摘Ning Zongjun Wu Hongao Xu Fuying 2007Solar Physics2007,241,1:1
10Clinical Studies of Postoperative Arterial Infusion Chemotherapy in Patients with Pathologic T_3 Esophageal Squamous Carcinoma显示文摘OBJECTIVE To evaluate how arterial infusion chemotherapy after radical surgery influences long-term survival of patients with pathologic T3 (pT3) esophageal squamous carcinoma. METHODS We divided 190 patients with pathologic pT3 esophageal squamous carcinoma, confirmed by consecutive radical surgery, into an experimental group (surgery + intra-arterial infusion, 56 T3N0M0 and 52 T3N1M0 cases), and the remaining patients into a control group (surgery alone, 48 T3N0M0 and 34 T3N1M0 cases). The experimental group was sub-grouped into 56 cases (26 T3N0M0 and 30 T3N1M0 cases) receiving 1 or 2 periods of chemotherapy, while 52 cases (30 T3N0M02 and 22 T3N1M0 cases) underwent 3 or more than 3 periods of chemotherapy. We used one to seven courses of selected arterial infusion chemotherapy of cis- platin (80 mg/m2 of body-surface area) and fluorouracil (800 mg/m2) with or without epirubicin at 3-4 weeks post operation. The interval between each period was 3-4 weeks. All cases were followed-up for more than 5 years. Survival rates were calculated by the Kaplan-Meier methods and survival differences between patients with and without selected arterial infusion chemotherapy were compared with the Log-rank test. Prognostic variables were entered into a Cox regression analysis model controlling for age, site, lymph node status, and treatment received. RESULTS The overall survival rates were not significantly different be- tween the experimental group and the control group, but there was better survival for patients who received 3 or more than 3 courses of chemotherapy. Lymph node status (N) was an important factor in the prognosis. CONCLUSION Trans-catheter arterial infusion chemotherapy is a safe and effective method of therapy. Postoperative selective arterial infusion chemotherapy can improve the survival rate in patients with esophageal squamous carcinoma who were previously treated by radical surgery. However, this modality of therapy needs further investigation.Baodong Liu Zongjun Dong Xiuyi Zhi Qingsheng Xu 2006Chinese Journal of Clinical Oncology2006,3,3:0
11Photosynthetic physiologies of phytoplankton in the eastern equatorial Indian Ocean during the spring inter-monsoon显示文摘Phytoplankton physiologies are dynamic and have sensitive responses to the ambient environment. In this paper, we examine photosynthetic physiologies of phytoplankton communities with Phyto-PAM in the eastern equatorial Indian Ocean during the spring inter-monsoon. Environmental parameters were measured to investigate the coupling between phytoplankton photosynthetic physiologies and their habitats. During the cruise, the water column was highly stratified. The mixed layer extended to about 75 m and was characterized by high temperature (>28°C) and low nutrient level. The Fv/Fm values and chlorophyll a (Chl a) concentrations were lower at the surface, as consequences of nutrient depletion and photo-inhibition. Subsurface Chl a maximum (SCM) occurred between 75 and 100 m, and had the highest Fv/Fm values. The formation of SCM was a balance between nutrient availability and light limitation. The SCM may contribute significantly to pelagic food web and primary production in the water column. Phytoplankton in different layers encountered different light, trophic and hydrographic dynamics and evolved distinct photosynthetic characteristics. Despite of co-limitation of nutrient limitation and photo-inhibition, phytoplankton in the surface layer showed their acclimation to high irradiance, had lower light utilization efficiencies (α: 0.061±0.032) and could exploit a wide range of light irradiance. Whereas, phytoplankton in the SCM layers presented the highest light utilization efficiencies (α: 0.146±0.48), which guaranteed higher photosynthetic capacities under low light level. These results provide insights into phytoplankton photo-adaption strategies in this less explored region.Chao Yuan Zongjun Xu Xuelei Zhang Qinsheng Wei Huiwu Wang Zongling Wang 2019Acta Oceanologica Sinica2019,38,6:0
12Numerical Simulation of Droplet Generation in Coaxial Microchannels显示文摘In this study,numerical simulations of the pinching-off phenomena displayed by the dispersed phase in a continuous phase have been conducted using COMSOL Multiphysics(level-set method).Four flow patterns,namely“drop flow”,“jet flow”,“squeeze flow”,and“co-flow”,have been obtained for different flow velocity ratios,channel diameter ratios,density ratios,viscosity ratios,and surface tension.The flow pattern map of two-phase flow in coaxial microchannels has been obtained accordingly,and the associated droplet generation process has been critically discussed considering the related frequency,diameter,and pinch-off length.In particular,it is shown that the larger the flow velocity ratio,the smaller the diameter of generated droplets and the shorter the pinch-off length.The pinch-off length of a droplet is influenced by the channel diameter ratio and density ratio.The changes in viscosity ratio have a negligible influence on the droplet generation pinching frequency.With an increase in surface tension,the frequency of generation and pinch-off length of droplets decrease,but for small surface tension the generation diameter of droplet increases.Zongjun Yin Rong Su Hui Xu 2024Fluid Dynamics & Materials Processing2024,20,3:0
13The distribution of phytoplankton size and major influencing factors in the surface waters near the northern end of the Antarctic Peninsula显示文摘The waters near the Antarctic Peninsula have always been a study hot spot because of their variable and unique oceanographic conditions.To determine the distribution and possible influencing factors on phytoplankton size and abundance near the Antarctic Peninsula,a large-scale survey was conducted during the austral summer of2018.Samples were collected in 27 stations located in the Drake Passage(DP),South Shetland Islands(SSI),and South Orkney Islands(SOI).Phytoplankton communities were described using chlorophyll a(Chl a),flow cytometry and light microscopy to cover a size range from pico-to microphytoplankton.Nanophytoplankton,especially small nanophytoplankton(2-6μm)with abundance ranging from 0.66×10^(3) cells/mL to 8.46×10^(3) cells/mL,was predominant throughout the study area.Among different regions,there was an obvious size shift.The proportion of picophytoplankton near the Elephant Island(EI)and DP was higher than other regions,and larger cells were found mainly in east of SOI.The distribution of phytoplankton abundance detected by flow cytometry was not completely consistent with Chl a concentrations due to the contribution of larger cells to Chl a.Possible influencing factors on the phytoplankton size distribution were discussed.The properties of water masses such as temperature and salinity can influence the phytoplankton size distribution.Correlation analysis revealed that only picophytoplankton is significantly correlated with salinity.Light and Fe availability might affect phytoplankton abundance and size distribution especially near the waters of SSI and EI in this study.It was also speculated that the abundance of cryptophytes is possibly related to ice melting.Lu Liu Mingzhu Fu Kaiming Sun Qinzeng Xu Zongjun Xu Xuelei Zhang Zongling Wang 2021Acta Oceanologica Sinica2021,40,6:0
14TEMPERATURE FIELD CONTROL PRINCIPLE AND CONTROL MODELS FOR CRYOGENIC MACHINING SYSTEM显示文摘TEMPERATUREFIELDCONTROLPRINCIPLEANDCONTROLMODELSFORCRYOGENICMACHININGSYSTEMTEMPERATUREFIELDCONTROLPRINCIPLEANDCONTROLMODELSFO...Liu Fei Kang Geweng Xu Zongjun Chongqing University 1995Chinese Journal of Mechanical Engineering1995,8,3:0
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