检索结果-南通市图书馆

adsorption characteristics of droplets applied on non-smooth leaf surface of typical crops

在线全文

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2016年第1期9卷 35-41页

作者： Wang Shujie Wang Hujun Li Chun Zhong Xiangmei Huang Hui Zhou Yajun College of Biological and Agricultural Engineering Jilin UniversityChangchun 130025China Key Laboratory of Bionic Engineering(Ministry of Education China)Jilin UniversityChangchun 130025China College of Food Science and Engineering Jilin UniversityChangchun 130025China

To further understand the adsorption characteristics of different-type leaf surfaces adsorbing pesticide droplets and reveal the adsorption mechanism of pesticide droplets on non-smooth leaves,non-smooth leaves of 12 kinds of typical target plants were investigated in this *** parameters of surface morphological characteristics were measured,which include contact angle between leaves and water droplets,water holding capacity surface tension,polar component,dispersion component and other quantitative range of indicators and variation by modern *** relationships between the indicators and water holding capacity were investigated *** experimental results show that the number of trichomes,epidermal wax,morphology and distribution characteristics have influences on adsorption characteristics of the water *** is a negative correlation between free energy of obverse side and the water holding capacity(R=−0.447)while the free energy of reverse side and the water holding capacity show a positive correlation(R=0.212).Also,there is a negative correlation between polar component of obverse side and the water holding capacity(R=−0.357)while the polar component of reverse side and the water holding capacity in plant leaves show a positive correlation(R=0.149).The research can provide a scientific theory for reasonable spraying of pesticide in the agricultural production,and can be a reference for the development of pesticide adjuvants and bionic pesticides.

关键词： surface of plant leaves adsorption characteristics contact angle water holding capacity surface tension

adsorption,in vitro digestion and human gut microbiota regulation characteristics of three Poria cocos polysaccharides

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

Food Science and Human Wellness 2024年第3期13卷 1685-1697页

作者： Fangming Zhang Hui Zheng Tao Zheng Pan Xu Yao Xu Yuxin Cao Fan Jia Yiqiong Zeng Yubing Fan Kai He Xinwen Dai Fengfei Hou Yong Yang College of Pharmacy Hunan University of Chinese MedicineChangsha 410208China School of Pharmaceutical Science Hunan University of MedicineHuaihua 418000China Hunan Fuling Engineering Technology Research Center Huaihua 418100China

Poria cocos(PC)is a famous traditional Chinese medicine(TCM)and a widely used healthcare ingredient,which has antiobesity,enhancing immunity and improving sleep ***,only water-soluble poria polysaccharide(WSP)is extracted and applied for clinical application,while insoluble polysaccharide(alkali-soluble poria polysaccharide,ASP)is discarded as herb ***,the whole PC has also been historically utilized as functional herbal *** the beneficial role of dietary fiber and the traditional use of PC,ASP may also contribute substantially to the therapy function of *** to WSP,little attention has been paid to ASP and ASP modified product carboxymethyl poria polysaccharide(CMP)which has been used as an antitumor adjuvant *** this study,the oil,cholesterol,metal ions and polyphenols adsorption ability,in vitro simulated digestive and the gut microbiota fermentation characteristics of WSP,ASP and CMP were studied to evaluate the functional values of three *** polysaccharides(PCPs).The results showed that all three PCPs had good adsorption capacity on cholesterol,polyphenols and metal ions(Cd^(2+)/Zn^(2+)/Mg^(2+)),among which ASP showed the highest capacity than WSP and *** adsorption capacity of all three PCPs on heavy metal ions(Cd^(2+)/Zn^(2+))was stronger than that of non-heavy metal ions(Mg^(2+));The in vitro digestibility of all three PCPs was very low,but WSP was slightly higher than ASP and CMP;Moreover,the indigestible residue of all three PCPs could improve the richness and diversity of gut microbiota,among which ASP had the greatest *** general,ASP and CMP could significantly promote the proliferation of some probiotics and inhibit the growth of some harmful *** gut microbiota diversity of CMP was reduced,but the richness of probiotics,especially Parabacteroides distasonis was significantly enhanced compared with the ASP group,and the growth of harmful bacteria Klebsiella pneumoniae was inh

关键词： Poria cocos polysaccharides Alkali-soluble poria polysaccharide Carboxymethyl poria polysaccharide adsorption characteristics In vitro simulated digestion In vitro simulated gut microbiota fermentation

adsorption of rare earth elements on organic matter in coal

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2023年第7期41卷 1108-1115,I0005页

作者： Xiaorui Wang Wei Cheng Renda Xu College of Mining Guizhou UniversityGuiyang 550025China National&Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas Guiyang 550025China Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources Guiyang 550025China

The occurrence modes of rare earth elements(lanthanide and yttrium,abbreviated as REY) in coal are impo rtant both for coal geochemistry studies and the application potential of REY as a by-product of coalbased *** this study,the adsorption behaviors of REY on organic matter in coal were investigated by leaching tests using REY solution and ultra-low ash coal *** this basis,the adsorption mechanism of REY on organic matter in coal was also studied by molecular simulation *** leaching tests show that the organic matter in coal has a relatively strong adsorption capacity for REY,and that the average adsorption rate or the net adsorption amount of heavy rare earth elements(HREY:Gd,Tb,Y,Dy,Ho,Er,Tm,Yb and Lu) is always higher than that of the light rare earth elements(LREY:La,Ce,Pr,Nd,Sm and Eu).A molecular model of humic acid(HA) was constructed and the adsorption amount between REY and HA was *** results show that the theoretical adsorption rate of HREY(84.88%) is higher than that of the LREY(84.00%).The analysis of the adsorption distances between REY atoms and various functional groups on HA molecules shows that the minimum adsorption distance of LREY is 0.372 nm on average,which is larger than that of HREY(0.368 nm),indicating that the adsorption capacity of the latter is *** addition,a coal molecule(C_(18)H_(22)O) was also constructed to investigate the adsorption characteristics of various REY atoms on the *** a result,it is found that the average binding ene rgy and bond length between the hydroxyl functional group and LREY atoms are 0.12469 Ha(Hartree,the unit of energy in the atomic unit system) and 0.1407 nm,respectively,while for HREY,0.12883 Ha and 0.1121 nm,*** confirms that HREY is more stable than LREY in binding on organic matter in *** conclude,both leaching tests and molecular simulation calculations reveal that REY has a strong adsorption affinity for organic matter in coal,and

关键词： Coal Rare earth elements adsorption characteristics Leaching Molecular simulation

Phosphorus removal by adsorbent based on poly-aluminum chloride sludge

在线全文

学校读者我要写书评

暂无评论

Water Science and Engineering 2020年第3期13卷 193-201页

作者： Hui-fang Wu Jun-ping Wang Er-gao Duan Wen-hua Hu Yi-bo Dong Guo-qing Zhang Department of Municipal Engineering Nanjing Tech UniversityNanjing 211800China

Phosphorus adsorption tests were carried out using poly-aluminum chloride sludge(PACS),which was collected from a water treatment plant in *** amount of phosphorus adsorbed by PACS increased quickly within the first hour and reached equilibrium after about 48 *** adsorption behavior of PACS for phosphorus is consistent with the Langmuir adsorption isotherm equation(R2>0.99)and parallel first-order kinetic equation(R2>0.98).With the increase of the PACS concentration,the adsorption capacity of PACS for phosphorus decreased,and the removal rate *** results of batch tests showed that the adsorption capacities of PACS for phosphorus ranged from 1.64 to 1.13 mg/g when the pH value varied from 4 to ***,the adsorption capacity of PACS was not evidently influenced by *** comparison with the ion exchange resin,the adsorption capacity of PACS was barely inhibited by competitive ions,such as SO24,NO3,and Cl.The PACS surface after adsorption became smooth,and the vibration peaks of AleO and AleOH *** HCl and NaOH have a strong desorption effect on PACS after adsorption saturation,and with higher concentrations of HCl and NaOH,the desorption effect was *** of column adsorption experiments showed that with lower phosphorus and hydraulic loads,the adsorption column took longer to reach *** indicated that PACS could be used as an efficient material for removal of phosphorus from *** study provides a new treatment method with PACS.

关键词： Poly-aluminum chloride sludge(PACS) Phosphorus removal adsorption characteristics Batch adsorption test Column adsorption test

MATHEMATIC MODEL AND EXPERIMENTAL STUDY ON ADSORBING OIL BY SEDIMENT

在线全文

学校读者我要写书评

暂无评论

International Journal of Sediment Research 1998年第3期 5-13页

作者： Wenqian ZHAO 1 and Xiaobo CAO 2 and Qinsheng HUANG 3

ＭＡＴＨＥＭＡＴＩＣＭＯＤＥＬＡＮＤＥＸＰＥＲＩＭＥＮＴＡＬＳＴＵＤＹＯＮＡＤＳＯＲＢＩＮＧＯＩＬＢＹＳＥＤＩＭＥＮＴＷｅｎｑｉａｎＺＨＡＯ１ａｎｄＸｉａｏｂｏＣＡＯ２ａｎｄＱｉｎｓｈｅｎｇＨＵＡＮＧ３ＡＢＳＴＲＡ... 详细信息

ＭＡＴＨＥＭＡＴＩＣＭＯＤＥＬＡＮＤＥＸＰＥＲＩＭＥＮＴＡＬＳＴＵＤＹＯＮＡＤＳＯＲＢＩＮＧＯＩＬＢＹＳＥＤＩＭＥＮＴＷｅｎｑｉａｎＺＨＡＯ１ａｎｄＸｉａｏｂｏＣＡＯ２ａｎｄＱｉｎｓｈｅｎｇＨＵＡＮＧ３ＡＢＳＴＲＡＣＴＴｈｅｃｈａｒａｃｔｅｒｉｓｔ...

关键词： adsorption characteristics Emulsified oil Oil pollution