检索结果-南通市图书馆

Simultaneous removal of congo red and cadmium(Ⅱ) from aqueous solutions using graphene oxide–silica composite as a multifunctional adsorbent

引用

Journal of Environmental Sciences 2020年第12期32卷 151-160页

作者： Ebrahim Mahmoudi Sepehr Azizkhani Abdul Wahab Mohammad law Yong Ng Abdelbaki Benamor Wei Lun Ang Muneer Ba-Abbad Department of chemical and Process Engineering Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia Department of chemical and Environmental Engineering Faculty of EngineeringUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of chemical Engineering Lee Kong Chian Faculty of Engineering and ScienceUniversiti Tunku Abdul RahmanJalan Sungai LongBandar Sungai LongCheras43000 KajangSelangorMalaysia centre for Sustainable Process Technology(cESPRO) Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia Gas Processing centre Qatar UniversityP.O.Box 2713DohaQatar

Graphene oxide is a very high capacity adsorbent due to its functional groups and π-π interactions with other compounds. Adsorption capacity of graphene oxide, however, can be further enhanced by having synergistic effects through the use of mixed-matrix composite. In this study, silica-decorated graphene oxide(SGO) was used as a high-efficiency adsorbent to remove congo red(cR) and cadmium(Ⅱ) from aqueous solutions. The effects of solution initial concentration(20 to 120 mg/l), solution pH(pH 2 to 7), adsorption duration(0 to 140 min) and temperature(298 to 323 K) were measured in order to optimize the adsorption conditions using the SGO adsorbent. Morphological analysis indicated that the silica nanoparticles could be dispersed uniformly on the graphene oxide surfaces. The maximum capacities of adsorbent for effective removal of cd(Ⅱ) and cR were 43.45 and 333.33 mg/g based on Freundlich and Langmuir isotherms, respectively. Langmuir and Freundlich isotherms displayed the highest values of Q max for cR and cd(Ⅱ) adsorption in this study, which indicated monolayer adsorption of cR and multilayer adsorption of cd(II) onto the SGO, respectively. Thermodynamic study showed that the enthalpy( H) and Gibbs free energy( G) values of the adsorption process for both pollutants were negative, suggesting that the process was spontaneous and exothermic in nature. This study showed active sites of SGO( π-π, hydroxyl, carboxyl, ketone, silane-based functional groups) contributed to an enormous enhancement in simultaneous removal of cR and cd(Ⅱ) from an aqueous solu-tion, Therefore, SGO can be considered as a promising adsorbent for future water pollution control and removal of hazardous materials from aqueous solutions.

关键词： Graphene-oxide Multifunctional adsorbent competitive removal Heavy metal-dye removal

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Development of a Low-cost Polymerase chain Reaction-based Method for Studying Differentially Expressed Genes in Developing Rice Leaves

引用

Journal of Integrative Plant Biology 2009年第6期51卷 614-621页

作者： Yin-Wan Wendy Fung Hoi Yee chow Tik Wan law Biao Dong Hoi Shan Kwan Faculty of Science The Chinese University of Hong Kong Shatin Hong Kong SAP China Department of Biology The Chinese University of Hong Kong Shatin Hong Kong SAR China

Gene expression studies are important for revealing gene functions putatively involved in biological processes. We were interested in identifying differentially expressed genes during leaf development in rice. We combined the RNA arbitrarily primed-polymerase chain reaction （***） and dot blot hybridization methods to screen a rice leaf primordium cDNA library. Three developmental stages during vegetative growth were examined. The cDNA clones showing different hybridization patterns were further analyzed and verified. Here we demonstrate that the combination of RAP-PcR and dot blot hybridization could provide an efficient and relatively low-cost cDNA library screening approach to discover genes not previously known to be associated with leaf development in rice, We believe that the findings described here will help to elucidate the molecular mechanism（s） underlying the developmental processes of rice leaf

关键词： cDNA clones development dot blot hybridization primordium RNA arbitrarily primed-polymerase chain reaction.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Finite-Time Sideslip Differentiator-Based LOS Guidance for Robust Path Following of Snake Robots

引用

IEEE/cAA Journal of Automatica Sinica 2023年第1期10卷 239-253页

作者： Yang Xiu Dongfang Li Miaomiao Zhang Hongbin Deng Rob law Yun Huang Edmond Q.Wu Xin Xu the School of Mechatronical Engineering Beijing Institute of TechnologyBeijing 100081China the School of Electrical Engineering and Automation Fuzhou UniversityFuzhou 350108 the Antai college of Economics&Management Shanghai Jiao Tong UniversityShanghai 200240China the Department of Automation Shanghai Jiao Tong UniversityShanghai 200240China the Asia-Pacific Academy of Economics and Management University of MacaoMacao 999078China the Department of Decision Science Macao University of Science and TechnologyMacao 999078China the Department of Automation Shanghai Jiao Tong Universityand also with the Key Laboratory of System Control and Information ProcessingMinistry of Education of ChinaShanghai 200240China the college of Mechatronics and Automation National University of Defense TechnologyChangsha 410073China IEEE

This paper presents a finite-time sideslip differentiator-based line-of-sight(LOS)guidance method for robust path following of snake ***,finite-time stable sideslip differentiator and adaptive LOS guidance method are proposed to counteract sideslip drift caused by cross-track *** proposed differentiator can accurately observe the cross-track error and sideslip angle for snake robots to avoid errors caused by calculating sideslip angle *** our method,the designed piecewise auxiliary function guarantees the finite-time stability of position ***,for the case of external disturbances and state constraints,a Barrier Lyapunov functionbased backstepping adaptive path following controller is presented to improve the robot’s *** uniform ultimate boundedness of the closed-loop system is proved by analyzing ***,a gait frequency adjustment-based virtual velocity control input is derived to achieve the exponential convergence of the tangential *** last,the availability and superiority of this work are shown through simulation and experiment results.

关键词： Line-of-sight(LOS) path following sideslip snake robot

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Interactions between maternal parity and feed additives drive the composition of pig gut microbiomes in the post‑weaning period

引用

Journal of Animal Science and Biotechnology 2024年第3期15卷 1241-1257页

作者： Kayla law Eduardo Rosa Medina Garcia chad Hastad Deborah Murray Pedro E.Urriola Andres Gomez Department of Animal Science University of Minnesota1364 Eckles AvenueSaint PaulMN 55108USA New Fashion Pork 164 Industrial ParkwayJacksonMN 56143USA

Background Nursery pigs undergo stressors in the post-weaning period that result in production and welfare *** challenges disproportionately impact the offspring of primiparous sows compared to those of mul-tiparous *** is known regarding potential interactions between parity and feed additives in the post-weaning period and their effects on nursery pig ***,the objective of this study was to investigate the effects of maternal parity on sow and offspring microbiomes and the influence of sow parity on pig fecal microbi-ome and performance in response to a prebiotic *** weaning,piglets were allotted into three treat-ment groups:a standard nursery diet including pharmacological doses of Zn and cu(con),a group fed a commercial prebiotic only(Preb)based on an Aspergillus oryzae fermentation extract,and a group fed the same prebiotic plus Zn and cu(Preb+Zncu).Results Although there were no differences in vaginal microbiome composition between primiparous and mul-tiparous sows,fecal microbiome composition was different(R^(2)=0.02,P=0.03).The fecal microbiomes of primiparous offspring displayed significantly higher bacterial diversity compared to multiparous offspring at d 0 and d 21 post-weaning(Pces in community composition observed at d 21(R^(2)=0.03,P=0.04).When analyzing the effects of maternal parity within each treatment,only the Preb diet triggered significant microbiome distinc-tions between primiparous and multiparous offspring(d 21:R^(2)=0.13,P=0.01;d 42:R^(2)=0.19,P=0.001).composi-tional differences in pig fecal microbiomes between treatments were observed only at d 21(R^(2)=0.12,P=0.001).Pigs in the con group gained significantly more weight throughout the nursery period when compared to those in the Preb+Zncu *** Nursery pig gut microbiome composition was influenced by supplementation with an Aspergillus oryzae fermentation extract,with varying effects on performance

关键词： Aspergillus prebiotic copper Feed additives Maternal Nursery pig microbiome Parity Swine microbiome Trace minerals Zinc

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

concomitant pancreatic adenocarcinoma in a patient with branch-duct intraductal papillary mucinous neoplasm

引用

World Journal of Gastroenterology 2014年第27期20卷 9200-9204页

作者： Joanna K law christopher L Wolfgang Matthew J Weiss Anne Marie Lennon Division of Gastroenterology Johns Hopkins Hospital

Branch duct intraductal papillary mucinous neoplasms(BD-IPMN) are pre-malignant pancreatic cystic lesions which carry a small risk of malignant transformation within the cyst. Guidelines exist with respect to surveillance of the cysts using computed tomography, magnetic resonance imaging, and/or endoscopic ultrasound(EUS). There are reports that patients with IPMNs are at increased risk of developing pancreatic adenocarcinoma, which arises in an area separate to the IPMNs. We present two cases of pancreatic adenocarcinoma arising within the parenchyma, distinct from the IPMN-associated cyst, identified with EUS. This case report highlights that patients with BD-IPMN are at increased risk for pancreatic adenocarcinoma separate from the cyst and also the importance for endosonographers to carefully survey the rest of the pancreatic parenchyma separate from the cyst in order to identify small pancreatic adenocarcinomas.

关键词： Pancreatic adenocarcinoma Intraductal papillary mucinous neoplasm Endoscopic ultrasound Surveillance

来源：

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

Preparation of enzymatic hydrolysate using edible fungi by-products of soup seasoning:Effect of different enzymes on enzymatic hydrolysis

引用

Food Bioscience 2022年第5期49卷 206-215页

作者： Yuanyuan Zhu Min Zhang Lihui Zhang chung Lim law Yuchuan Wang Kun Liu State Key Laboratory of Food Science and Technology Jiangnan University214122WuxiJiangsuChina International Joint Laboratory on Food Safety Jiangnan University214122WuxiJiangsuChina Jiangsu Province International Joint Laboratory on Fresh Food Smart Processing and Quality Monitoring Jiangnan University214122WuxiJiangsuChina Department of chemical and Environmental Engineering University of NottinghamMalaysia Campus 43500 SemenyihSelangorMalaysia Sichuan Tianwei Food Group co. Ltd.610000ChengduChina

Edible fungi residuals are by-products from the preparation process of edible fungi hot pot soup *** hydrolysate was prepared by cellulase(cel),papain(Pap)and neutral protease(Nep)as well as their combination,and the reducing sugar content,the degree of hydrolysis(TDH),color,antioxidant capacity,inorganic elements and flavor of enzymatic hydrolysate were *** properties of enzymatic hydrolysate produced by compound enzymes were better than that of single enzyme,especially for the compound of enzymes cel and *** reducing sugar of enzymatic hydrolysate prepared by the combination of cel and Pap increased 6.98 times and with TDH reached 25.80%±1.28%.In addition,edible fungi by-products after enzymatic hydrolysis exhibited yellowish-brown color with higher antioxidant capacity and little change of the volatile *** hydrolysate possessed a high retention rate of Na and Mg in the raw material,and there was no potential harm caused by excessive heavy metals(cd,Pb,As).

关键词： By-products of edible fungi soup seasoning Enzymatic hydrolysis Enzymatic hydrolysate

来源：

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

Also on the Attitude,Position and Methods of Sinology:comments on Liang Tao's Sinological View of confucian Theory of Great Harmony

引用

学术界 2010年第2期 262-266页

作者： Lin cunguang china University ofPolitical Science and law

*** Tao recently wrote an article "the attitude,position and methods of Guoxue(国学)study:comments on *** Zehua’s ’Guoxue view’ of Royal power doctrine ",which was published in the Guoxue edition of Guangming Daily... 详细信息

关键词： Si Also on the Attitude,Position and Methods of Sinology view View

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

微量硼对TiAl合金动态拉伸性能的影响

引用

金属学报 1998年第9期34卷 915-918页

作者：王瑜林栋梁周元鑫夏源明 c.c.law 上海交通大学材料科学系中国科学技术大学近代力学系合肥230026 MaterialsandMechanicsEngineering UnitedTechnologiesCompany-Pratt&Whittney400MainStreet

采用自制的Hopkinson拉杆装置，研究了微量硼对形变Ti—47Al—2Mn—2Nb合金在20—1000S－1应变速率范围内的拉伸性能的影响；发现添加1．0％B（原子分数）能明显提高其动态拉伸强度，不破坏动态拉伸强度与应变速率之间的线性关系，但对... 详细信息

采用自制的Hopkinson拉杆装置，研究了微量硼对形变Ti—47Al—2Mn—2Nb合金在20—1000S－1应变速率范围内的拉伸性能的影响；发现添加1．0％B（原子分数）能明显提高其动态拉伸强度，不破坏动态拉伸强度与应变速率之间的线性关系，但对其动态拉伸塑性无明显的改善作用，对动态断裂方式也无明显影响.

关键词： TiAl合金 Hopkinson拉杆动态力学性能拉伸

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Highly transparent and super-wettable nanocoatings hybridized with isocyanate-silane modified surfactant for multifunctional applications

引用

Nano Materials Science 2022年第2期4卷 151-168页

作者： Man Kwan law Ying Zhao Weibin Zhang Rui Wang Mingcheng Shi Yunxiao Zhang Shusheng chen Jinglei Yang Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayHong Kong SARChina

Highly transparent and super-wettable nanocoatings for multifunctional applications with outstanding physical properties are in high ***,such nanocoatings resistant to water invasion and Ultraviolet(UV)weathering remain a significant *** this work,physically durable coatings based on inorganic nanoparticles(NPs)and an organic segment(isocyanate-silane modified surfactant)have been synthesized via a sol-gel *** is noteworthy the isocyanate-silane with-NH-c=O-functional group creates a strong bonding between the highly hydrophilic surfactant and the inorganic *** in-house synthesized organic segment can render the coating long-lasting wetting properties and resist to be washed away by water,while the inorganic NPs can form sturdy covalent bonds with the nano-scale hierarchical structure on the glazing substrate to improve the *** nanocoating demonstrates high transparency with superwetting property(water contact angle,WcA=4.4±0.3°),effective de-frosting *** invasion or UV accelerated weathering tests do not significantly affect the self-cleaning performance of *** properties,including coating adhesion,hardness,Young's modulus,and abrasion resistance are systematically ***,this clear coating shows prominent infrared shielding property attributed to Antimony-doped tin oxide(Sb-doped SnO_(2))*** developed nanocoating process is easy to scale up for larger areas that require multipurpose self-cleaning functions.

关键词： Nanocoating Sol-gel approach Multifunctionality High transparency Superwetting Durability

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

应变速率对近全片层组织γ-TiAl合金韧脆转变温度的影响

引用

金属学报 1997年第10期33卷 1021-1027页

作者：王瑜林栋梁刘俊亮 c.c.law 上海交通大学 MaterialsandMechanicsEngineering UnitedTechnologiesCompany-Pratt&Whitney400MainStreelEastHartfordCT06108U.S.a

采用拉伸试验，研究了不同应变速率（10-5－10-1s-1）下温度对具有近全片层组织的γ＋α2双相Tial合金的屈服强度和延伸率的影响，得到Tial合金韧脆转变温度随应变速率升高而升高的变化关系，随后确定Tial合金韧脆转变激活能为324kJ／mo... 详细信息

采用拉伸试验，研究了不同应变速率（10-5－10-1s-1）下温度对具有近全片层组织的γ＋α2双相Tial合金的屈服强度和延伸率的影响，得到Tial合金韧脆转变温度随应变速率升高而升高的变化关系，随后确定Tial合金韧脆转变激活能为324kJ／mol．这一激活能数值与Tial合金中原子自扩散激活能相当.结合断口分析和理论计算结果，认为Tial合金韧脆转变过程可能受位错攀移机制控制.

关键词：金属间化合物韧脆转变应变速率 TiAl 激活能

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：