Nanobiohybrid: A Favorite Candidate for Future Water Purification Technology

2015 ◽  
Vol 1131 ◽  
pp. 193-197 ◽  
Author(s):  
Rasel Das ◽  
Sharifah Bee Abd Hamid ◽  
Md Eaqub Ali

Clean and safe water crises have become one of the major global problems for decades. To address this issue, various water purification technologies have been adopted. Conventional water purification technologies are time consuming, expensive, and have low affinity and efficiency to newly emerging micropollutants in water. The paradigm might compel scientific community to spot light on the issue and develop novel technology for ensuring clean and safe water availability to all. Among the many promises of current water purification technologies, here we proposed a combination of nanomaterial (Carbon nanotube) and biomolecule (Enzyme) or simply “nanobiohybrid” catalyst, which can be a judicious choice for developing a novel water purification technology. In addition, the potentiality of this nanobiohybrid catalyst in both sensing and mitigating organic water pollutants has been highlighted. The technology is a perfect example of multi-scale development and covers most of the challenges of existing water purification technology. We hope this “one pot” combination route can tackle a diverse range of water contaminants in the near future.

Author(s):  
Judith Herrin

This book explores the exceptional roles that women played in the vibrant cultural and political life of medieval Byzantium. This book evokes the complex and exotic world of Byzantium's women, from empresses and saints to uneducated rural widows. Drawing on a diverse range of sources, the book sheds light on the importance of marriage in imperial statecraft, the tense coexistence of empresses in the imperial court, and the critical relationships of mothers and daughters. It looks at women's interactions with eunuchs, the in-between gender in Byzantine society, and shows how women defended their rights to hold land. The book describes how women controlled their inheritances, participated in urban crowds demanding the dismissal of corrupt officials, followed the processions of holy icons and relics, and marked religious feasts with liturgical celebrations, market activity, and holiday pleasures. The vivid portraits that emerge here reveal how women exerted an unrivalled influence on the patriarchal society of Byzantium, and remained active participants in the many changes that occurred throughout the empire's millennial history. The book brings together the author's finest essays on women and gender written throughout the long span of her career. This volume includes three new essays published here for the very first time and a new general introduction. It also provides a concise introduction to each essay that describes how it came to be written and how it fits into her broader views about women and Byzantium.


2020 ◽  
Vol 17 (3) ◽  
pp. 211-215
Author(s):  
Da Chen ◽  
Xuan Wang ◽  
Runnan Wang ◽  
Yao Zhan ◽  
Xiaohan Peng ◽  
...  

The Friedlander reaction is the most commonly used method to synthesis substituted quinolines, the essential intermediates in the medicine industry. A facile one-pot approach for synthesizing substituted quinolines by the reaction of isoxazoles, ammonium formate-Pd/C, concentrated sulfuric acid, methanol and ketones using Friedlander reaction conditions is reported. Procedures for the synthesis of quinoline derivatives were optimized, and the yield was up to 90.4%. The yield of aromatic ketones bearing electron-withdrawing groups was better than the ones with electron-donating substituents. The structures of eight substituted quinolines were characterized by MS, IR, H-NMR and 13CNMR, which were in agreement with the expected structures. The mechanism for the conversion was proposed, which involved the Pd/C catalytic hydrogen transfer reduction of unsaturated five-membered ring of isoxazole to produce ortho-amino aromatic ketones. Then the nucleophilic addition of with carbonyl of the ketones generated Schiff base in situ, which underwent an intermolecular aldol reaction followed by the elimination of H2O to give production of substituted quinolines. This new strategy can be readily applied for the construction of quinolines utilizing a diverse range of ketones and avoids the post-reaction separation of the o-amino aromatic ketone compounds. The conventionally used o-amino aromatic ketone compounds in Friedlander reaction to prepare substituted quinoline are laborious to synthesize and are apt to self-polymerize. While oxazole adopted in this work can be prepared at ease by the condensation of benzoacetonitrile and nitrobenzene derivatives under the catalysis of a strong base. Moreover, the key features of this protocol are readily available starting materials, excellent functional group tolerance, mild reaction conditions, operational simplicity, and feasibility for scaling up.


2012 ◽  
Vol 22 (18) ◽  
pp. 9052 ◽  
Author(s):  
Zhiwei Zhao ◽  
Jie Liu ◽  
Fuyi Cui ◽  
Hui Feng ◽  
Linlin Zhang

2018 ◽  
Vol 62 (3) ◽  
pp. 333-359 ◽  
Author(s):  
Miriam Gross

During the Chinese Cultural Revolution (1966–76), Chairman Mao fundamentally reformed medicine so that rural people received medical care. His new medical model has been variously characterised as: revolutionary Maoist medicine, a revitalised form of Chinese medicine; and the final conquest by Western medicine. This paper finds that instead of Mao’s vision of a new ‘revolutionary medicine’, there was a new medical synthesis that drew from the Maoist ideal and Western and Chinese traditions, but fundamentally differed from all of them. Maoist medicine’s ultimate aim was doctors as peasant carers. However, rural people and local governments valued treatment expertise, causing divergence from this ideal. As a result, Western and elite Chinese medical doctors sent to the countryside for rehabilitation were preferable to barefoot doctors and received rural support. Initially Western-trained physicians belittled elite Chinese doctors, and both looked down on barefoot doctors and indigenous herbalists and acupuncturists. However, the levelling effect of terrible rural conditions made these diverse conceptions of the doctor closer during the Cultural Revolution. Thus, urban doctors and rural medical practitioners developed a symbiotic relationship: barefoot doctors provided political protection and local knowledge for urban doctors; urban doctors’ provided expertise and a medical apprenticeship for barefoot doctors; and both counted on the local medical knowledge of indigenous healers. This fragile conceptual nexus had fallen apart by the end of the Maoist era (1976), but the evidence of new medical syntheses shows the diverse range of alliances that become possible under the rubric of ‘revolutionary medicine’.


2021 ◽  
Author(s):  
Lynette Morgan

Abstract Crop protection procedures have existed since the first attempts at early agriculture. While cultivation of a vast range of crops is vital our existence, these same plants are highly attractive to a diverse range of invertebrate and vertebrate pests, and disease pathogens. Competition from weed species also occurs on a worldwide scale. Even with the many forms of crop protection practised today, losses due to pests and diseases range from 10 to 90%, with an average of 35-40% for all potential food and fibre crops (Peshin, 2002).


2017 ◽  
Vol 490 ◽  
pp. 685-694 ◽  
Author(s):  
Muhammad Rizwan Azhar ◽  
Hussein Rasool Abid ◽  
Hongqi Sun ◽  
Vijay Periasamy ◽  
Moses O. Tadé ◽  
...  

2019 ◽  
Vol 24 (2) ◽  
pp. 161-168 ◽  
Author(s):  
Jenna Wahbeh ◽  
Sarah Milkowski

The use of hydrazones presents an opportunity for enhancing drug delivery through site-specific drug release, including areas such as tumor tissue or thrombosis. Many researchers are experimenting on how to more efficiently form these hydrazones, specifically using heat and chemical catalysts. Hydrazones respond on the pH environment or are synthesized with particular functional groups of the hydrazone and are two of the many unique features that allow for their programmed drug release. Their flexibility allows them to be relevant in a diverse range of applications, from anti-inflammatory to anticancer to acting as a chelating agent. This review paper discusses efficient ways to optimize the properties of hydrazones and their utilization in various clinical applications, including anticancer, anti-inflammatory, the prevention of platelet aggregation, and roles as chelating agents.


2019 ◽  
Vol 345 ◽  
pp. 213-222 ◽  
Author(s):  
Xiang-Nan Wei ◽  
Cai-Ling Ou ◽  
Su-Su Fang ◽  
Xiu-Cheng Zheng ◽  
Guang-Ping Zheng ◽  
...  

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