检索结果-南通市图书馆

Artificial Intelligence Providing a More Optimized Assessment Tool for Comprehensive Geriatric Assessment

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Beijing Institute of Technology 2023年第2期32卷 131-141页

作者： na guo Jian guo Xinxin Yan Department of Geri-atrics Aerospace Central HospitalBeijing 100049China Xi’an University of Finance and Eco-nomics Xi’an 710100China

With the continuous development of science and technology,artificial intelligence(AI)is coming into our lives and changing our *** China entered the aging society in 2000,the degree of population aging has *** geriatric assessment(CGA)is now the accepted gold standard for the care of older people in ***,some problems limit the clinical application,such as complexity and time ***,by analyzing previous studies,we summarize some existing AI tools in order to find a more optimized assessment tool to complete the entire CGA process.

关键词： artificial intelligence(AI) comprehensive geriatric assessment(CGA) wearable devices deep learning model image acquisition

Variation of nutrient fluxes by rainfall redistribution processes in the forest canopy of an urban larch plantation in northeast China

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2022年第4期33卷 1259-1269页

作者： Houcai Sheng na guo Cunyong Ju Tijiu Cai Center for Ecological Research Northeast Forestry UniversityHarbin 150040People’s Republic of China Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education Northeast Forestry UniversityHarbin 150040People’s Republic of China College of Food Engineering East University of HeilongjiangHarbin 150040People’s Republic of China

Atmospheric deposition(dry and wet deposition)is one of the primary sources of chemical inputs to terrestrial ecosystems and replenishes the nutrient pool in forest *** often acts as a primary transporting agent and solvent;thus,nutrient cycles in forests are closely linked to hydrological *** collected precipitation data during a growing season to explore variations in nutrient cycling and nutrient balances in the rainfall redistribution process(wet deposition)in a larch plantation in northeast *** measured nutrient(NO_(3)^(-),PO_(4)^(3−),Cl^(−),K,Ca,na,and Mg)inputs via bulk precipitation,throughfall and stemfl ow,and used a canopy budget model to estimate nutrient fl uxes via canopy *** results suggest that the average concentrations of the base cation(K,Ca,na,and Mg)showed the following order:stemfl ow>throughfall>bulk *** and stemfl ow chemistry dramatically fl uctuated over the growing season when net fl uxes(throughfall+stemfl ow—bulk precipitation)of NO−3,PO3−4,SO2−4,Cl−,K,Ca,na,and Mg were−6.676 kg·ha^(-1),−1.094 kg·ha^(-1),−2.371 kg·ha^(-1),1.975 kg·ha^(-1),0.470 kg·ha^(-1),−5.202 kg·ha^(-1),−0.336 kg·ha^(-1),and 1.397 kg·ha^(-1),*** results suggest that NO−3,PO3−4,SO2−4,Ca,and na were retained,while Cl−,K,and Mg were washed off by throughfall and stemfl ow.

关键词： Rainfall redistribution Aqueous fluxes Water chemistry Macronutrients input Plantation forest Harbin

Microstructure and mechanical properties of NbZrTi and NbHfZrTi alloys

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2019年第9期38卷 840-847页

作者： Yu-Min Hu Xiao-Dong Liu na-na guo Liang Wang Yan-Qing Su Jing-Jie guo Harbin Medical University Cancer Hospital Harbin 150001China national Key Laboratory for Precision Hot Processing of Metals School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150001China

Two medium-entropy alloys,NbZrTi and NbHfZrTi,were prepared by arc *** NbZrTi and NbHfZrTi alloys are composed of simple body-centered cubic(bcc)solid solution phase and exhibit dendritic *** being homogenized,both NbZrTi and NbHfZrTi alloys are still composed of the single bcc solid solution phase,but the microstructure of the two alloys transforms from the dendritic structure into the polycrystalline *** alloys display significantly workhardening effect during compression at room temperature and show relatively good deformation plasticity during compressive deformation at room *** NbZrTi and NbHfZrTi alloys,the dynamic recrystallized grains form along the boundary during compression at the temperatures of 1073 and 1273 K.

关键词： Phase Microstructure Mechanical properties

Recovery of Chitin and Protein from Shrimp Head Waste by Endogenous Enzyme Autolysis and Fermentation

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2019年第3期18卷 719-726页

作者： guo na SUN Jianan ZHANG Zhaohui MAO Xiangzhao College of Food Science and Engineering Ocean University of China Qingdao 266003 China Laboratory for Marine Drugs and Bioproducts Qingdao National Laboratory for Marine Science and Technology Qingdao 266237 China

The industrial processing of shrimp produces massive quantities of solid waste that is a notable source of animal protein, chitin, carotenoids, and other bioactive compounds that are not appropriately utilized. In the present study, chitin and protein extraction from shrimp head with autolysis and fermentation using Bacillus licheniformis were investigated. The results showed that when shrimp heads were autolyzed with a natural pH at 50℃ for 4 h, the total amino acid nitrogen in the supernatant was 5.01 mg mL^-1. Then, when a 50%(v/m) inoculum of the hydrolysate was incubated at 60℃ for 10 h, a deproteinization rate of 88.3% could be obtained. The fermented supernatant was processed into a dry protein powder, while the residues were demineralized by 10% citric acid for chitin. The recovered protein powder contained 5.5% moisture, 11.5% ash, and 66.7% protein, while the chitin contained 3.5% moisture, 2.1% ash, and 3.1% protein. In addition, amino acids, minerals, heavy metals, the degree of acetylation, microstructure, and Fourier-transform infrared(FT-IR) spectroscopy results were analyzed. Furthermore, the statistics of the large scale trial after treatment with 20 kg of shrimp heads were analyzed. Thus, this work made the shrimp waste utilization environmentally sound and valuable.

关键词： shrimp head waste endogenous enzyme autolysis fermentation chitin

Global Phase Portraits of Uniform Isochronous Centers System of Degree Six with Polynomial Commutator

在线全文

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2024年第3期40卷 577-599页

作者： Li-na guo Ai-yong CHEN Shuai-feng ZHAO School of Mathematics and Statistics Henan University of Science and TechnologyLuoyang 471023China Department of Mathematics Hunan First Normal UniversityChangsha 410205China School of Mechatronics Engineering Henan University of Science and TechnologyLuoyang 471023China

This paper studies the global phase portraits of uniform isochronous centers system of degree six with polynomial *** systems have the form x=-y+xf(x,y),y=x+yf(x,y),where f(x,y)=a_(1)x+a_(2)xy+a_(3)xy^(2)+a_(4)xy^(3)+a_(5)xy^(4)=xσ(y),and any zero of 1+a_(1)y+a_(2)y^(2)+a_(3)y^(3)+a_(4)y^(4)+a_(5)y^(5),y=y is an invariant straight *** last,all global phase portraits are drawn on the Poincare disk.

关键词： global phase portraits uniform isochronous center polynomial commutator invariant straight lines

Effect of captopril on serum TNF-α level in acute lung injury rats induced by HCL

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2014年第11期7卷 905-908页

作者： Hong-Mei Liu Yu-na guo Tangshang Clinical College of Hebei Medical University Pain Clinics Xuanwu Hospital Capital Medical University

Objective:To observe the effect of captopril on the tumor necrosis factor-α(TNF- α) level and arterial blood gases in acute lung injury(All) induced by HCL in rats,and to analyze its protective ***:Fifty Wistar rats were selected and randomly divided into three groups,with 20 rats in Group Ⅰ and Ⅱ,respectively and 10 animals in Group Ⅲ.ALI model was constructed by intratracheal injection of diluted hydrochloric acid(pH=1.***.1.2 mL/kg).Group Ⅰrats received not any treatment after construction of AM *** Ⅱ rats were treated with captopril(5 mg/kg,i.p.) 5 min after induction of *** Ⅲ served as normal control without any *** minutes after construction of ALI model,all the rats were *** was withdrawn for detection of TNF- α level and arterial blood gases *** lung tissue slices of the three groups were prepared for observation of pathologic histology ***:TNF- α level in serum of Group Ⅰ and Ⅱ rats was significantly higher than that in Group Ⅲ(P<0.05),while TNF- α level in serum of Group Ⅱ was significantly lower in Group Ⅰ(P<0.05).PaCO_2 level was significantly higher(P<0.05),while PaO_2 was significantly lower(P<0.05) in Group Ⅰ and Ⅱ rats than those in Group Ⅲ.PaCO_2 was significantly lower(P<0.05) and PaO_2 was significantly higher(P<0.05) in Group Ⅱ than those in Group Ⅰ.Histological observation showed diffuse congestion and severe edema of luug tissue,obvious thickening and structure damage of alveolar walls and a large amount of neutrophil infiltration in Group Ⅰ *** Ⅱ rats showed mild edema of lung tissue;only a small portion of alveolar walls showed thickening and only a few of neutrophil infiltration could be *** degree of injury was remarkably slighter than that of Group Ⅰ *** Ⅲ rats showed clear lung tissue structure and normal morphology:alveolar walls were uniform and the margin was smooth and few neutrophil could be ***:Captopril can significantly r

关键词： Captopril Acute lung injury TNF-α Lung function

Decarburization Thermodynamics of High-Carbon Ferromanganese Powders During Gas-Solid Fluidization Process

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2012年第5期19卷 1-8页

作者： guo Li-na CHEN Jin ZHANG Meng LIANG Min College of Materials Science and Engineering Taiyuan University of Technology Taiyuan 030024 Shanxi China

Thermodynamic conditions of reactions between high-carbon ferromanganese powders and gas decarbonizers like O2, CO2 and water vapor were studied by thermodynamic calculation. In O2, CO2 and water vapor atmosphere, high-carbon ferromanganese powders were decarburized in a fluidized bed. When the temperature is respectively higher than 273, 1 226 and 1 312 K, the gas-solid decarburization reaction will occur between ferromanganese carbide on the surface of the high-carbon ferromanganese powders and different gas decarbonizers. Since metal manganese is easy to be oxidized by O2, CO2 or water vapor, the decarburization reaction will transfer into a solid-solid phase reaction of ferromanganese carbide and ferromanganese oxide, promoting external diffusion of carbon to achieve a further decarburization of high-carbon ferromanganese powders.

关键词： gas-solid fluidization high carbon ferromanganese powders gas decarbonizer solid-phase decarburization

Self-healing Behavior of Ethylene Propylene Diene Rubbers Based on Ionic Association

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2019年第7期37卷 700-707页

作者： Zhi-Fei Zhang Kun Yang Shu-Gao Zhao Lai-na guo Key Laboratory of Rubber-plastics Ministry of Education/Shandong Provincial Key Laboratory of Rubber-PlasticsQingdao University of Science & TechnologyQingdao 266042China College of Chemical Engineering and Materials Science Tianjin University of Science & TechnologyTianjin 300457China Hutchinson research centerRue Gustave NourryChalette sur Loing45120France

To meet the increasing demand for safe, environmentally friendly and high-performance smart materials, self-healing rubbers are highly desired. Here, the self-healing performance of ethylene propylene diene monomer rubber (EPDM) is reported, which was designed by graft-polymerization of zinc dimethacrylate (ZDMA) onto rubber chains to form a reversible ionic cross-linked network. Single ionic cross-linked network and dual network, combining covalent and ionic cross-links, could be tuned by controlling vulcanization process to achieve tailorable mechanical and self-healing properties. It was found that ionic cross-linked EPDM showed a recovery of more than 95% of the original mechanical strength through a healing process of 1 h at 100 °C. The covalent cross-links could improve mechanical properties but block self-healing. Adding 50 wt% liquid rubber to “dry” EPDM could effectively enhance self-healing capability of the dual cross-linked network and the healed tensile strength could reach 0.9 MPa. A compromise between mechanical performance and healing capability could be potentially tailored by controlling vulcanization process and liquid rubber content.

关键词： Ionic bond Self-healing Ethylene propylene diene rubber Dual-network

Marine bacteria inhibit corrosion of steel via synergistic biomineralization

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第7期66卷 82-90页

作者： na guo Yanan Wang Xinrui Hui Qianyu Zhao Zhenshun Zeng Shuai Pan Zhangwei guo Yansheng Yin Tao Liu College of Ocean Science and Engineering Instituce of Marine Materials Science and EngineeringShanghai Maritime University.Shanghai 201306China Key Laboratory for Water Quality and Conservation of the Pearl River Delta School of Environmental Science and EngineeringGuangzhou UniversityGuangzhou 510006China Key Laboratory of Tropical Marine Bio-resources and Ecology the South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China

Metal corrosion often results in incalculable economic loss and significant safety hazards. Although numerous traditional methods have been used to mitigate the issue, such as coating and corrosion inhibitors, they are environmentally unfriendly and difficult to maintain. Therefore, in this study, an environmental approach was taken to protect steels from corrosion in a multi-species bacterial environment via synergistic biomineralization. The marine bacterium Pseudoalteromonas lipolytica mixed with Bacillus subtilis or Pseudomonas aeruginosa strains offered extraordinary corrosion protection for *** surface characterization and electrochemical tests showed that the biomineralized film generated by the mixed bacteria was more compact and protective than that induced by a single bacterium. Herein,we found that the synergistic mechanisms were rather different for the different bacterial groups. For Pseudoalteromonas lipolytica and Bacillus subtilis group, the related mechanisms were due to the increase of pH in the medium, secretion of carbonic anhydrase. As for Pseudoalteromonas lipolytica and Pseudomonas aeruginosa group, the synergistic mechanism was attributed to the inhibiting corrosive bacteria in biofilm by the growth advantage of Pseudoalteromonas lipolytica. Therefore, this study may introduce a new perspective for future use of biomineralization in a real marine environment.

关键词： Bacillus subtilis Pseudoalteromonas lipolytica Pseudomonas aeruginosa Biomineralized film Anticorrosion Steel