This paper discusses the development of a source evaluation assessment, and presents the results of using this instrument in a one-semester information literacy course for journalism students. The assessment was developed using the threshold concept perspective, the “authority is constructed and contextual” frame, and an established source evaluation rubric. As formative assessment, the instrument showed that students’ source evaluations lacked evidence and included ritualized language. As summative assessment, it showed that students used a greater range of indicators of authority than they used initially, and used evidence more frequently. The assessment can measure students’ source evaluations across the disciplines.
{"title":"News Credibility: Adapting and Testing a Source Evaluation Assessment in Journalism","authors":"Piotr S. Bobkowski, K. Younger","doi":"10.5860/crl.81.5.822","DOIUrl":"https://doi.org/10.5860/crl.81.5.822","url":null,"abstract":"This paper discusses the development of a source evaluation assessment, and presents the results of using this instrument in a one-semester information literacy course for journalism students. The assessment was developed using the threshold concept perspective, the “authority is constructed and contextual” frame, and an established source evaluation rubric. As formative assessment, the instrument showed that students’ source evaluations lacked evidence and included ritualized language. As summative assessment, it showed that students used a greater range of indicators of authority than they used initially, and used evidence more frequently. The assessment can measure students’ source evaluations across the disciplines.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"1 1","pages":"822-843"},"PeriodicalIF":1.8,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90278623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Susan A. Elkins, Soonyoung Hwang, Dianna L. Kim, Tyler Manolovitz, K. Mueller, E. Owens
Following two previous studies in 2010 and 2013, this study intends to identify current trends of Sam Houston State University students’ technology and communication needs and preferences regarding library services and resources. Drawing comparisons to two previous local studies and national data sets, such as those from Pew Internet Research and the EDUCAUSE Center for Analysis and Research (ECAR), the findings revealed, among other things, a decline in tablet usage and interest, continued need for library computers, and a complex relationship between social media usage and engagement with the library. The results of this survey will inform and guide the library and the profession to most efficiently and effectively offer desired library services and engage students on appropriate social media platforms.
继2010年和2013年的两项研究之后，本研究旨在确定山姆休斯顿州立大学学生对图书馆服务和资源的技术和通信需求和偏好的当前趋势。通过对比皮尤互联网研究中心(Pew Internet Research)和EDUCAUSE分析研究中心(EDUCAUSE Center for Analysis and Research, ECAR)之前的两项地方性研究和全国性数据集，研究结果显示，平板电脑的使用和兴趣有所下降，对图书馆电脑的需求仍在继续，以及社交媒体使用与图书馆参与之间的复杂关系。这项调查的结果将为图书馆和专业人士提供信息和指导，以最有效地提供所需的图书馆服务，并在适当的社交媒体平台上吸引学生。
{"title":"What Do You Want from Us? Evaluating Student Interest in Technology-Based Services in Academic Libraries","authors":"Susan A. Elkins, Soonyoung Hwang, Dianna L. Kim, Tyler Manolovitz, K. Mueller, E. Owens","doi":"10.5860/CRL.81.5.844","DOIUrl":"https://doi.org/10.5860/CRL.81.5.844","url":null,"abstract":"Following two previous studies in 2010 and 2013, this study intends to identify current trends of Sam Houston State University students’ technology and communication needs and preferences regarding library services and resources. Drawing comparisons to two previous local studies and national data sets, such as those from Pew Internet Research and the EDUCAUSE Center for Analysis and Research (ECAR), the findings revealed, among other things, a decline in tablet usage and interest, continued need for library computers, and a complex relationship between social media usage and engagement with the library. The results of this survey will inform and guide the library and the profession to most efficiently and effectively offer desired library services and engage students on appropriate social media platforms.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"7 1","pages":"844-864"},"PeriodicalIF":1.8,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87809889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
It is easy to think that, since a book may focus on a particular topic, it means that it is not useful beyond those in that field. That is not the case when it comes to American Theological Library Association’s new edited publication Information Literacy and Theological Librarianship . Bobby Smiley, editor and librarian at Vanderbilt University’s Divinity Library, has pulled together authors whose chapters can easily serve both theological librarians and information literacy and instruction librarians. The latter group will find useful information that can be tailored to their needs. The subject-level perspective also provides a lens that can help in approaching other fields. All of the chapter authors are affiliated with a range of different theological libraries at colleges, universities, and seminaries.
{"title":"Information Literacy and Theological Librarianship: Theory and Praxis. Bobby Smiley, ed. Chicago, IL: Atla Open Press, an imprint of the American Theological Library Association, 2019. 189p. Paper, $35.00 (ISBN: 978-1-949800-01-2).","authors":"M. E. Shelton","doi":"10.5860/crl.81.5.889","DOIUrl":"https://doi.org/10.5860/crl.81.5.889","url":null,"abstract":"It is easy to think that, since a book may focus on a particular topic, it means that it is not useful beyond those in that field. That is not the case when it comes to American Theological Library Association’s new edited publication Information Literacy and Theological Librarianship . Bobby Smiley, editor and librarian at Vanderbilt University’s Divinity Library, has pulled together authors whose chapters can easily serve both theological librarians and information literacy and instruction librarians. The latter group will find useful information that can be tailored to their needs. The subject-level perspective also provides a lens that can help in approaching other fields. All of the chapter authors are affiliated with a range of different theological libraries at colleges, universities, and seminaries.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"38 1","pages":"889"},"PeriodicalIF":1.8,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84914977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.22034/CRL.2020.229025.1058
T. Attar
Trace elements are minerals present in living tissues in minute quantities. Some of them are known to be nutritionally essential and the remainder is considered to be nonessential. The body requires certain essential elements and their deficiency or excess may result in serious dysfunction of the body and even death in extreme cases. The low intakes dietary of trace element produce changes in biochemical pathways that can raise the risk of diseases over time. On the other hand, excessive levels, a level higher than needed for biological functions, of these elements can be toxic for the body health. This review evaluates the role and importance of the essential trace element in the human organism. The potential importance of key essential trace elements; Magnesium, Manganese, Iron, Zinc, Copper, Cobalt, Iodine, Selenium, Nickel, Molybdenum and Chromium; and nonessential trace such as Cadmium, Lead, Arsenic and Mercury are discussed.
{"title":"A mini-review on importance and role of trace elements in the human organism","authors":"T. Attar","doi":"10.22034/CRL.2020.229025.1058","DOIUrl":"https://doi.org/10.22034/CRL.2020.229025.1058","url":null,"abstract":"Trace elements are minerals present in living tissues in minute quantities. Some of them are known to be nutritionally essential and the remainder is considered to be nonessential. The body requires certain essential elements and their deficiency or excess may result in serious dysfunction of the body and even death in extreme cases. The low intakes dietary of trace element produce changes in biochemical pathways that can raise the risk of diseases over time. On the other hand, excessive levels, a level higher than needed for biological functions, of these elements can be toxic for the body health. This review evaluates the role and importance of the essential trace element in the human organism. The potential importance of key essential trace elements; Magnesium, Manganese, Iron, Zinc, Copper, Cobalt, Iodine, Selenium, Nickel, Molybdenum and Chromium; and nonessential trace such as Cadmium, Lead, Arsenic and Mercury are discussed.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"8 1","pages":"117-130"},"PeriodicalIF":1.8,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80226988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.22034/CRL.2020.229483.1055
S. Pirsa, F. Mohtarami, Sara Kalantari
In this study, biodegradable composite starch/tragacanth gum/Nanoclay (St/TG/Clay) film was prepared. The basis of the film was wheat starch, which tragacanth gum was added at three levels (0.2 and 0.5% by w/w) and clay nanoparticles at three levels (0.1, 0.5 and 3% by w/w). Physicochemical properties of the film, including thickness, water solubility, moisture content, and vapor vapor permeability (WVP), were investigated. The mechanical properties of the films, including the tensile strength and elongation of the films, and the color characteristics of the films were examined. The results showed that adding tragacanth to the starch film increased the thickness, moisture content and permeability of the water vapor and reduced its solubility. The addition of tragacanth to the starch film increased tensile strength and elongation. The addition of tragacanth reduced the transparency of the films. Adding clay nanoparticles to starch film increased the water content, reduced water vapor permeability, and reduced solubility, but adding nanoparticles increased the thickness. Nanoclay increased the tensile strength of the films and reduced the elongation. The lightness of the films decreased with the addition of nano-clay, and the factor b, which indicated the yellowness of the film, increased. In general, it can be concluded that the addition of tragacanth and Nanoclay improves the physical and mechanical properties of starch film.
{"title":"Preparation of biodegradable composite starch/tragacanth gum/Nanoclay film and study of its physicochemical and mechanical properties","authors":"S. Pirsa, F. Mohtarami, Sara Kalantari","doi":"10.22034/CRL.2020.229483.1055","DOIUrl":"https://doi.org/10.22034/CRL.2020.229483.1055","url":null,"abstract":"In this study, biodegradable composite starch/tragacanth gum/Nanoclay (St/TG/Clay) film was prepared. The basis of the film was wheat starch, which tragacanth gum was added at three levels (0.2 and 0.5% by w/w) and clay nanoparticles at three levels (0.1, 0.5 and 3% by w/w). Physicochemical properties of the film, including thickness, water solubility, moisture content, and vapor vapor permeability (WVP), were investigated. The mechanical properties of the films, including the tensile strength and elongation of the films, and the color characteristics of the films were examined. The results showed that adding tragacanth to the starch film increased the thickness, moisture content and permeability of the water vapor and reduced its solubility. The addition of tragacanth to the starch film increased tensile strength and elongation. The addition of tragacanth reduced the transparency of the films. Adding clay nanoparticles to starch film increased the water content, reduced water vapor permeability, and reduced solubility, but adding nanoparticles increased the thickness. Nanoclay increased the tensile strength of the films and reduced the elongation. The lightness of the films decreased with the addition of nano-clay, and the factor b, which indicated the yellowness of the film, increased. In general, it can be concluded that the addition of tragacanth and Nanoclay improves the physical and mechanical properties of starch film.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"32 1","pages":"98-103"},"PeriodicalIF":1.8,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87616262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.22034/CRL.2020.233274.1061
Z. Doroudi, Mohammad Reza Jalali Sarvestani
In this research, the performance of boron nitride nanocone for the detection and removal of ampicillin was investigated by infra-red (IR), natural bond orbital (NBO), frontier molecular orbital (FMO) computations. The calculated values of adsorption energy showed the interaction of ampicillin with BN nanocone is experimentally possible. The calculated values of Gibbs free energy and thermodynamic equilibrium constant showed the adsorption process is spontaneous and irreversible. The calculated values of enthalpy changes and specific heat capacity showed ampicillin adsorption is exothermic and BN nanocone can be used for the construction of a new thermal sensor for the detection of ampicillin. The effect of temperature on the thermodynamic parameters was also evaluated and the results indicated ampicillin adsorption is more favorable in room temperature. The NBO results demonstrated in both of the studied configurations a monovalent chemical bond is formed between the nanostructure and the adsorbate and the interaction process is chemisorption. The DOS spectrums showed the bandgap of BN nanocone increased from 1.888 (eV) to 7.030 (eV) which proved this nanomaterial is an appropriate electrochemical sensing material for detection of ampicillin. Some important structural parameters such as dipole moment, electrophilicity, maximum charge capacity, chemical hardness and chemical potential were also calculated and discussed in detail.
{"title":"Boron nitride nanocone as an adsorbent and senor for Ampicillin: A Computational Study","authors":"Z. Doroudi, Mohammad Reza Jalali Sarvestani","doi":"10.22034/CRL.2020.233274.1061","DOIUrl":"https://doi.org/10.22034/CRL.2020.233274.1061","url":null,"abstract":"In this research, the performance of boron nitride nanocone for the detection and removal of ampicillin was investigated by infra-red (IR), natural bond orbital (NBO), frontier molecular orbital (FMO) computations. The calculated values of adsorption energy showed the interaction of ampicillin with BN nanocone is experimentally possible. The calculated values of Gibbs free energy and thermodynamic equilibrium constant showed the adsorption process is spontaneous and irreversible. The calculated values of enthalpy changes and specific heat capacity showed ampicillin adsorption is exothermic and BN nanocone can be used for the construction of a new thermal sensor for the detection of ampicillin. The effect of temperature on the thermodynamic parameters was also evaluated and the results indicated ampicillin adsorption is more favorable in room temperature. The NBO results demonstrated in both of the studied configurations a monovalent chemical bond is formed between the nanostructure and the adsorbate and the interaction process is chemisorption. The DOS spectrums showed the bandgap of BN nanocone increased from 1.888 (eV) to 7.030 (eV) which proved this nanomaterial is an appropriate electrochemical sensing material for detection of ampicillin. Some important structural parameters such as dipole moment, electrophilicity, maximum charge capacity, chemical hardness and chemical potential were also calculated and discussed in detail.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"124 1","pages":"110-116"},"PeriodicalIF":1.8,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82646419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.22034/CRL.2020.230856.1057
F. Nareetsile, James T. P. Matshwele, Scotch Ndlovu, M. Ngaski
The management of HIV in the human body has been a major research area in the quest to either find the cure or the preventative scientific measure. The quest to manage the virus has been successful using some organic molecules which target one or more of the stages of the replication cycle of HIV rendering it inhibited to continue infecting other host cells. However, the approach is now moving to use of transition metal complexes to manage the HIV infection in the host cells and this review highlights the relevant contributions of such as HIV/AIDS inhibitors. There have been increasing number of reports on the trends for transition metal complexes with anticancer and antimicrobial activity hence this probed the need of such a review. Complexes of vanadium, manganese, iron, copper, cobalt, nickel, zinc, ruthenium, platinum and gold have been reported to be active against HIV-1 virus. The complexes discussed in this review showed anti-viral activity compared to the vehicle control.
{"title":"Transition Metal Complexes with HIV/AIDS Inhibitory Properties","authors":"F. Nareetsile, James T. P. Matshwele, Scotch Ndlovu, M. Ngaski","doi":"10.22034/CRL.2020.230856.1057","DOIUrl":"https://doi.org/10.22034/CRL.2020.230856.1057","url":null,"abstract":"The management of HIV in the human body has been a major research area in the quest to either find the cure or the preventative scientific measure. The quest to manage the virus has been successful using some organic molecules which target one or more of the stages of the replication cycle of HIV rendering it inhibited to continue infecting other host cells. However, the approach is now moving to use of transition metal complexes to manage the HIV infection in the host cells and this review highlights the relevant contributions of such as HIV/AIDS inhibitors. There have been increasing number of reports on the trends for transition metal complexes with anticancer and antimicrobial activity hence this probed the need of such a review. Complexes of vanadium, manganese, iron, copper, cobalt, nickel, zinc, ruthenium, platinum and gold have been reported to be active against HIV-1 virus. The complexes discussed in this review showed anti-viral activity compared to the vehicle control.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"12 1","pages":"140-160"},"PeriodicalIF":1.8,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89022237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.22034/CRL.2020.228931.1054
S. Adawara, P. Mamza, Gideon Adamu Shallangwa, Abdulkadir Ibrahim
Dengue infection is a major public health challenge in several parts of the world, especially the sub-tropical and tropical regions. The development of agents that are able to inhibit the dengue virus (DNV) replication are therefore of utmost significance. I. tinctoria is one of the most investigated Chinese herbs, which has been recognised to be effective in the treatment of dengue fever. However, the mechanisms through which it exhibits such biological activity of great importance are still unclear. A total number of about 27 compounds isolated from I. tinctoria leaves which have been identified and reported in the literature to be effective against dengue fever were investigated for their inhibitory potencies against dengue virus as novel drugs for treating early attacks of dengue fever. The compounds were optimized by employing a method of Density functional theory (DFT) and a basis set of B3LYP (6-31G**). The results of Molecular docking investigation between the compounds and the dengue viral protein (PDB: 6MO1) revealed that three of the compounds (GB-20, GB-19, and GB-6) possessing best binding energy in of -27.051, -26.193 and -24.664 kcal/mol respective were observed to inhibit the target through hydrogen bonds and hydrophobic interactions with amino acids residue of the protease binding site. The results of these studies would offer relevant insight into structural requirements for the development of effective and a specific therapeutic treatment against dengue virus infection.
{"title":"Anti-Dengue potential, Molecular Docking Study of Some Chemical constituents in the leaves of Isatis tinctoria","authors":"S. Adawara, P. Mamza, Gideon Adamu Shallangwa, Abdulkadir Ibrahim","doi":"10.22034/CRL.2020.228931.1054","DOIUrl":"https://doi.org/10.22034/CRL.2020.228931.1054","url":null,"abstract":"Dengue infection is a major public health challenge in several parts of the world, especially the sub-tropical and tropical regions. The development of agents that are able to inhibit the dengue virus (DNV) replication are therefore of utmost significance. I. tinctoria is one of the most investigated Chinese herbs, which has been recognised to be effective in the treatment of dengue fever. However, the mechanisms through which it exhibits such biological activity of great importance are still unclear. A total number of about 27 compounds isolated from I. tinctoria leaves which have been identified and reported in the literature to be effective against dengue fever were investigated for their inhibitory potencies against dengue virus as novel drugs for treating early attacks of dengue fever. The compounds were optimized by employing a method of Density functional theory (DFT) and a basis set of B3LYP (6-31G**). The results of Molecular docking investigation between the compounds and the dengue viral protein (PDB: 6MO1) revealed that three of the compounds (GB-20, GB-19, and GB-6) possessing best binding energy in of -27.051, -26.193 and -24.664 kcal/mol respective were observed to inhibit the target through hydrogen bonds and hydrophobic interactions with amino acids residue of the protease binding site. The results of these studies would offer relevant insight into structural requirements for the development of effective and a specific therapeutic treatment against dengue virus infection.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"116 1","pages":"104-109"},"PeriodicalIF":1.8,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74759286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-01DOI: 10.22034/CRL.2020.235381.1066
Mehdi Taheri Sarhozaki, S. Aramideh, J. Akbarian, S. Pirsa
The cotton whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is an important pest of cotton which by transmitting plant pathogenic viruses cause damage and reduce lint quality. To reduce the use of chemical insecticides, effects of ZnO nanoparticles, Kaolin alone or in pairwise combination with NeemAzal-T/S against egg and second instar nymph of B. tabaci and pupae of its parasitoid Eretmocerus mundus Mercet were evaluated. The LC50 values of ZnO NPs, Kaolin and NeemAzal-T/S against eggs and nymphs of B. tabaci were 7.49 mg L-1, 24.89 g L-1, 6.83 mg L-1 AZA and 6.93 mg L-1, 18.36 g L-1 and 6.00 mg L-1 AZA 3 days after treatment, respectively. The LC50 values of ZnO NPs, Kaolin and NeemAzal-T/S against E. mundus were 11.30 mg L-1, 41.59 g L-1, 36.90 mg L-1 AZA, respectively 3 days after treatment. In the laboratory conditions, ZnO + NeemAzal and Kaolin + NeemAzal exerted a higher level of control on eggs and nymphs of the pest than either alone, while they had a lower level of negative effects on the parasitoid pupae, too. In the field conditions and at 7 DAT, Kaolin + NeemAzal was the most effective treatment on eggs of the pest, causing a 67.43% reduction, while NeemAzal-T/S was the most effective treatment on nymph (86.52% reduction), which was not different with ZnO + NeemAzal and Kaolin + NeemAzal. NeemAzal and ZnO exerted the highest and lowest mortality on pupae of the parasitoid, respectively. Based on the field studies, ZnO NPs at 20 mg L-1, Kaolin at 30 g L-1, NeemAzal-T/S at 15 mg L-1 AZA and mixing equal volumes of NeemAzal-T/S (7.5 mg L-1 AZA)+ZnO NPs (10 mg L-1) and NeemAzal-T/S (7.5 mg L-1 AZA)+ Kaolin (15 g L-1) can be suitable candidates in IPM programs of B. tabaci field condition.
棉花粉虱(半翅目:粉虱科)是一种重要的棉花害虫，它通过传播植物致病性病毒对棉花造成危害，降低棉绒质量。为了减少化学杀虫剂的使用，研究了氧化锌纳米颗粒、高岭土单用或与NeemAzal-T/S双用对烟粉虱卵、二龄若虫及其寄生蜂白僵螨蛹的杀灭效果。氧化锌NPs、高岭土和NeemAzal-T/S对烟粉虱卵和若虫的LC50值分别为7.49 mg L-1、24.89 g L-1、6.83 mg L-1 AZA，处理3 d后分别为6.93 mg L-1、18.36 g L-1和6.00 mg L-1 AZA。处理3 d后，氧化锌NPs、高岭土和NeemAzal-T/S对赤霉病菌的LC50值分别为11.30 mg L-1、41.59 g L-1和36.90 mg L-1 AZA。在实验室条件下，氧化锌+ NeemAzal和高岭土+ NeemAzal对寄生蜂卵和若虫的抑制作用高于单独处理，而对寄生蜂蛹的抑制作用也低于单独处理。在田间条件和7 d时，高岭土+ NeemAzal处理虫卵最有效，降低率为67.43%，而NeemAzal- t /S处理若虫最有效，降低率为86.52%，与ZnO + NeemAzal和高岭土+ NeemAzal处理效果无显著差异。NeemAzal和ZnO对寄生蜂蛹的致死率分别最高和最低。在田间条件下，20 mg L-1 ZnO NPs、30 g L-1高岭土、15 mg L-1 AZA的NeemAzal-T/S和等体积NeemAzal-T/S (7.5 mg L-1 AZA)+ZnO NPs (10 mg L-1)、NeemAzal-T/S (7.5 mg L-1 AZA)+高岭土(15 g L-1)混合可以作为烟粉虱田间条件下IPM方案的合适选择。
{"title":"Effects of ZnO nanoparticles and Kaolin in combination with NeemAzal-T/S against Bemisia tabaci and its parasitoid Eretmocerus mundus on cotton","authors":"Mehdi Taheri Sarhozaki, S. Aramideh, J. Akbarian, S. Pirsa","doi":"10.22034/CRL.2020.235381.1066","DOIUrl":"https://doi.org/10.22034/CRL.2020.235381.1066","url":null,"abstract":"The cotton whitefly, Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is an important pest of cotton which by transmitting plant pathogenic viruses cause damage and reduce lint quality. To reduce the use of chemical insecticides, effects of ZnO nanoparticles, Kaolin alone or in pairwise combination with NeemAzal-T/S against egg and second instar nymph of B. tabaci and pupae of its parasitoid Eretmocerus mundus Mercet were evaluated. The LC50 values of ZnO NPs, Kaolin and NeemAzal-T/S against eggs and nymphs of B. tabaci were 7.49 mg L-1, 24.89 g L-1, 6.83 mg L-1 AZA and 6.93 mg L-1, 18.36 g L-1 and 6.00 mg L-1 AZA 3 days after treatment, respectively. The LC50 values of ZnO NPs, Kaolin and NeemAzal-T/S against E. mundus were 11.30 mg L-1, 41.59 g L-1, 36.90 mg L-1 AZA, respectively 3 days after treatment. In the laboratory conditions, ZnO + NeemAzal and Kaolin + NeemAzal exerted a higher level of control on eggs and nymphs of the pest than either alone, while they had a lower level of negative effects on the parasitoid pupae, too. In the field conditions and at 7 DAT, Kaolin + NeemAzal was the most effective treatment on eggs of the pest, causing a 67.43% reduction, while NeemAzal-T/S was the most effective treatment on nymph (86.52% reduction), which was not different with ZnO + NeemAzal and Kaolin + NeemAzal. NeemAzal and ZnO exerted the highest and lowest mortality on pupae of the parasitoid, respectively. Based on the field studies, ZnO NPs at 20 mg L-1, Kaolin at 30 g L-1, NeemAzal-T/S at 15 mg L-1 AZA and mixing equal volumes of NeemAzal-T/S (7.5 mg L-1 AZA)+ZnO NPs (10 mg L-1) and NeemAzal-T/S (7.5 mg L-1 AZA)+ Kaolin (15 g L-1) can be suitable candidates in IPM programs of B. tabaci field condition.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"85 1","pages":"131-139"},"PeriodicalIF":1.8,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76724723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-04-01DOI: 10.22034/CRL.2020.224177.1043
N. Norouzi, S. Talebi, A. Shahbazi
Coal will still be a significant component of power generation for years to come, and carbon dioxide capture systems will be the essential feature of clean coal in the future. Those who promise to deliver low carbon dioxide capture costs are committed to the pipeline and future systems. So far, many methods of carbon dioxide capture have proved costly and energy-hungry based on coal system additives. Besides, it is continually moving other industries to effectively utilize the amount of carbon present in carbon dioxide and move toward carbon capture and reuse, which is marketed ready for carbon dioxide, but it has different requirements on product quality. This paper aims to review the methods of carbon capture technologies and develop an optimal method for the green coal combustion process using the Energy and Exergy Analysis. According to the results of this paper, the Chemical Looping Combustion is the most suitable method for this process, and with the coal, powerplants using CLC technologies, the Green Coal target can be made real.
{"title":"An overview on the carbon capture technologies with an approach of green coal production study","authors":"N. Norouzi, S. Talebi, A. Shahbazi","doi":"10.22034/CRL.2020.224177.1043","DOIUrl":"https://doi.org/10.22034/CRL.2020.224177.1043","url":null,"abstract":"Coal will still be a significant component of power generation for years to come, and carbon dioxide capture systems will be the essential feature of clean coal in the future. Those who promise to deliver low carbon dioxide capture costs are committed to the pipeline and future systems. So far, many methods of carbon dioxide capture have proved costly and energy-hungry based on coal system additives. Besides, it is continually moving other industries to effectively utilize the amount of carbon present in carbon dioxide and move toward carbon capture and reuse, which is marketed ready for carbon dioxide, but it has different requirements on product quality. This paper aims to review the methods of carbon capture technologies and develop an optimal method for the green coal combustion process using the Energy and Exergy Analysis. According to the results of this paper, the Chemical Looping Combustion is the most suitable method for this process, and with the coal, powerplants using CLC technologies, the Green Coal target can be made real.","PeriodicalId":10686,"journal":{"name":"College & Research Libraries","volume":"39 1","pages":"65-78"},"PeriodicalIF":1.8,"publicationDate":"2020-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77978069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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