384 research outputs found
Interview with Lakshmi Raj Sharma, Author of The Tailor’s Needle
Get PDFInterview with Indian writer Lakshmi Raj Sharma, author of 'The Tailor's needle
Advances in PGPR research/ edited by Harikesh Bahadur Singh, Banaras Hindu University, India, Birinchi Kumar Sarma, Banaras Hindu University, India, Chetan Keswani, Banaras Hindu University, India.
No full textIncludes bibliographical references and index.This book includes 25 contributions from vastly experienced, global experts in PGPR research in a comprehensive and influential manner, with the most recent facts and extended case studies. Also, the chapters address the current global issues in biopesticide research.Mechanisms of Growth Promotion by Members of the Rhizosphere Fungal Genus Trichoderma / Artemio Mendoza-Mendoza, Guillermo Nogueira-L opez, Fabiola Padilla Arizmendi, Natalia Cripps-Guazzone, Mar ia Fernanda Nieto-Jacobo, Robert Lawry, Diwakar Kandula, Fatima Berenice Salazar-Badillo, Silvia Salas-Mu noz, Jorge Armando Mauricio-Castillo, Robert Hill, Alison Stewart and Johanna Steyaert -- Physiological and Molecular Mechanisms of Bacterial Phytostimulation / Randy Ortiz-Castro, Jes us Salvador L opez-Bucio and Jos e L opez-Bucio -- Real-time PCR as a Tool towards Understanding Microbial Community Dynamics in Rhizosphere / Gautam Anand, Upma Singh, Abhineet Sain, Virendra S. Bisaria and Shilpi Sharma -- Biosafety Evaluation: A Necessary Process Ensuring the Equitable Beneficial Effects of PGPR / Juan Ignacio V ilchez, Richard Daniel Lally and Rafael Jorge Le on Morcillo -- ^Role of Plant Growth-Promoting Microorganisms in Sustainable Agriculture and Environmental Remediation / Rama Kant Dubey, Vishal Tripathi, Sheikh Adil Edrisi, Mansi Bakshi, Pradeep Kumar Dubey, Ajeet Singh, Jay Prakash Verma, Akanksha Singh, B.K. Sarma, Amitava Rakshit, D.P. Singh, H.B. Singh and P.C. Abhilash -- Pseudomonas Communities in Soil Agroecosystems / Betina Cecilia Agaras, Luis Gabriel Wall and Claudio Valverde -- Management of Soilborne Plant Pathogens with Beneficial Root-Colonizing Pseudomonas / Dmitri V. Mavrodi, Mingming Yang, Olga V. Mavrodi and Shanshan Wen -- Rhizosphere, Mycorrhizosphere and Hyphosphere as Unique Niches for Soil-Inhabiting Bacteria and Micromycetes / Elena Voronina and Irina Sidorova -- ^The Rhizospheres of Arid and Semi-arid Ecosystems are a Source of Microorganisms with Growth-Promoting Potential / Fatima Berenice Salazar-Badillo, Silvia Salas-Mu noz, Jorge Armando Mauricio-Castillo, Jorge S aenz-Mata, Artemio Mendoza-Mendoza, Maria Fernanda Nieto-Jacobo and Johanna Steyaert -- Rhizosphere Colonization by Plant-Beneficial Pseudomonas spp.: Thriving in a Heterogeneous and Challenging Environment / Antoine Zboralski, Adrien Biessy and Martin Filion -- Endophytomicrobiont: A Multifaceted Beneficial Interaction / Shatrupa Ray, Vivek Singh, Kartikay Bisen, Chetan Keswani, Surendra Singh and H.B. Singh -- Contribution of Plant Growth-Promoting Bacteria to the Maize Yield / Vivian Jaskiw Szilagyi Zecchin, Angela Cristina Ikeda and Atila Francisco M ogor -- The Potential of Mycorrhiza Helper Bacteria as PGPR / Marieta Marin Bruzos -- Methods for Evaluating Plant Growth-Promoting Rhizobacteria Traits / Antonio Castellano-Hinojosa and E.J. Bedmar -- ^The Rhizosphere Microbial Community and Methods of its Analysis / Mukesh Meena, Manish Kumar Dubey, Prashant Swapnil, Andleeb Zehra, Shalini Singh, Punam Kumari and R.S. Upadhyay -- Improving Crop Performance under Heat Stress using Thermotolerant Agriculturally Important Microorganisms / M.K. Chitara, Chetan Keswani, Kartikay Bisen, Vivek Singh, S.P. Singh, B.K. Sarma and H.B. Singh -- Phytoremediation and the Key Role of PGPR / Elisabetta Franchi and Gianniantonio Petruzzelli -- Role of Plant Growth-Promoting Rhizobacteria (PGPR) in Degradation of Xenobiotic Compounds and Allelochemicals / Deepika Goyal, Janmejay Pandey and Om Prakash -- Harnessing Bio-priming for Integrated Resource Management under Changing Climate / Deepranjan Sarkar, Sumita Pal, H.B. Singh, Ranjeet Singh Yadav and Amitava Rakshit -- ^Unravelling the Dual Applications of Trichoderma spp. as Biopesticide and Biofertilizer / Vivek Singh, Shatrupa Ray, Kartikay Bisen, Chetan Keswani, R.S. Upadhyay, B.K. Sarma and H.B. Singh -- 21 Genome Insights into Plant Growth-Promoting Rhizobacteria, an Important Component of Rhizosphere Microbiome / Vasvi Chaudhry, Niladri Chaudhry and Shrikant S. Mantri -- Plant Growth-Promoting Rhizobacteria (PGPR): Mechanism, Role in Crop Improvement and Sustainable Agriculture / Pallavi Mittal, Madhu Kamle, Shubhangini Sharma, Pooja Choudhary, Devendra Pratap Rao and Pradeep Kumar -- PGPR: A Good Step to Control Several of Plant Pathogens / Laith K. Tawfeeq Al-Ani -- Role of Trichoderma Secondary Metabolites in Plant Growth Promotion and Biological Control / Jyoti Singh, Rahul Singh Rajput, Kartikay Bisen, Surendra Singh and H.B. Singh -- ^PGPR-Mediated Defence Responses in Plants under Biotic and Abiotic Stresses / Gagan Kumar, Jai Singh Patel, Anupam Maharshi, Arpan Mukherjee, Chetan Keswani, S.P. Singh, H.B. Singh and B.K. Sarma.1 online resourc
Continuous flow platforms for the synthesis of high-quality semiconductor nanocrystals
Get PDFSemiconductor nanocrystals are of great interest due to their unique optical and electronic properties that are intermediate between bulk semiconductors and molecules. These nanoparticles find use in various applications ranging from electronics (light emitting diodes, photovoltaics) to photocatalysis and biolabeling. Typically, these nanoparticles are produced via batch synthesis routes that suffer from various issues, including slow mixing, slow heating/cooling, and lack of batch-to-batch reproducibility. These issues escalate further when increasing the scale of the production, thereby hindering their application on a commercial scale. Continuous flow synthesis can be an alternative approach that may enable high throughput and superior control of particle size and quality. However, since its first application in the early 2000s, most of the literature remains focused on continuous flow synthesis of Cd-based dots. Recently, the use of Cadmium (Cd) has been banned for many applications owing to its toxicity. Therefore, there is an immediate need for robust continuous flow reactors that enable synthesis of high quality Cd-free semiconductor nanoparticles.
The modular continuous flow reactor reported in this work enables multistep, high temperature (up to 750 °C), air-sensitive synthesis of semiconductor nanocrystals involving solid and/or viscous reactants. Additionally, the millifluidic dimensions of the reactor allow for high working flow rates (> 10 ml/min) that translate into a production rate of about 150 g/day of nanocrystals. This this configuration is well suited for scale-up. The developed continuous flow reactor is designed to achieve quick heating and cooling times (< 1 s), thereby providing superior control over reaction conditions compared to the level of control that can be achieved in conventional batch synthesis techniques. The flow reactor is composed of fracture-resistant material, stainless steel, which is compatible with a wide variety of solvents at high temperatures. Furthermore, the modular flow reactor allows for inline characterization of the product, through absorbance and fluorescence spectroscopy. To demonstrate the applicability of the modular continuous flow reactor, we used the reactor to synthesize multi-layered Cd-based core-shell dots, CdSe bipods and nanorods, ZnSe nanorods, and highly luminescent InP/ZnSeS core-shell dots.
The need for superior size control, shape selectivity and high reproducibility has resulted in a shift from conventional batch synthesis techniques to alternate synthesis routes. In the wake of such tight requirements, continuous flow syntheses, especially those relying on microfluidics, have emerged as viable routes for the synthesis of high-quality semiconductor nanocrystals. In general, continuous flow syntheses provide higher control over reaction conditions, for example mixing and heating times. We started by identifying the right material of construction and fabrication technique for building a continuous flow reactor that could withstand high temperatures. Design and fabrication of a simple oil-bath based continuous flow reactor and its application to demonstrate proof-of-principle syntheses of multi-layered Cd-based core-shell nanocrystals is discussed in Chapter 2. Use of heating media such as oil or hot water limits the maximum temperature attained by the reactor and is not suited for scale-up. To obviate the use of oil as a heating medium, a new continuous flow reactor was developed that uses a solid-state heating technique. The reactor configuration was further modified and coupled with a Schlenk line to enable high temperature, air-sensitive synthesis of semiconductor nanocrystals. Chapter 3 describes the design, fabrication, and operation of the new continuous flow reactor setup to synthesize anisotropic semiconductor nanocrystals, both Cd-based (CdSe nanorods/bipods) and Cd-free (ZnSe nanorods). Next, an inline mixer and a second reactor were added to the setup to enable multistep synthesis of InP/ZnSeS dots. Furthermore, the reactor design was upgraded to minimize the residence time distribution effects by the effective use of static mixers inside the reactor modules. Two flow cells were installed downstream of the reactors to enable inline spectroscopic characterization of the product. The design, fabrication, and operation of this multistep reactor setup are discussed in Chapter 4. Effective and fast mixing is critical to obtain uniform nanocrystals. However, fast mixing comes at the expense of high pressure drop. To alleviate this problem, we designed a high-throughput millifluidic herringbone mixer which is discussed in Chapter 5.
In summary, the modular continuous flow reactor developed here will pave the path for high-throughput synthesis of high-quality semiconductor nanocrystals. The described platform equipped with inline characterization capabilities can also be used to study the reaction kinetics of the aforementioned syntheses, which are not fully understood at present. Furthermore, the reactor also can be used for syntheses other than semiconductor nanocrystals, especially those that require stringent conditions, including high temperature, inert conditions, and fast mixing.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2018-08-01The student, Vivek Kumar, accepted the attached license on 2016-04-21 at 09:25.The student, Vivek Kumar, submitted this Dissertation for approval on 2016-04-22 at 08:15.This Dissertation was approved for publication on 2016-05-10 at 16:32.DSpace SAF Submission Ingestion Package generated from Vireo submission #9396 on 2018-08-14 at 15:59:43Made available in DSpace on 2018-08-14T21:37:15Z (GMT). No. of bitstreams: 13
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Should a Hypercoagulable Workup Be Performed on Young Patients with Nonarteritic Anterior Ischemic Optic Neuropathy?: Response
No full textWe would like to thank M. K. Kumar and his colleagues for sharing their experience regarding their patient\u27s clinical presentation, Prothrombin G20210Amutation, and its proposed causative link to his development of non-arteritic anterior ischemic optic neuropathy (NAION) at the relatively young age of 47
Dynamics of a delayed prey-predator model using modified Holling Tanner functional response with migration
No full textPlanar versus bulk heterojunction perovskite microstructures: Impact of morphology on photovoltaic properties and recombination dynamics
No full text
Interaction Effect of the Phosphorus and Sulphur Levels on Growth and Yield Attributes of Linseed (Linum usitatissimum) Crop under Rainfed Condition
No full textLinseed (Linum usitatissimum) belonging to family Linaceae, is a blue flowering annual herb that produces small linseed varying from golden yellow to reddish brown color. In India linseed is mainly cultivated in Madhya Pradesh, Maharashtra, Chhattisgarh and Bihar. Phosphorus occurs in most plants at 0.1 and 0.4% on dry weight basis. Like nitrogen, phosphorus is also a constituent of important metabolites, like phosphorylated sugars involved in photosynthesis, respiration and other metabolic processes. The oilseeds require more amount of sulphur for its growth and development than other crops. Plant height was influenced by sulphur and phosphorus levels up to 60 DAS but at 90 DAS all sulphur and phosphorus interaction level produced plant population. Various yield attributes of linseed number of capsule/plant, seed/ capsule, seed yield/plant, stover yield/plant, 1000 seed test weight. The number of capsule/plant and seed /capsule significantly increased with decreased in sulphur and phosphorus levels. Important role 15 kg/ha sulphur and 40 kg/ha phosphorus to increase maximum number capsule and seed/plant. The increase in stover yield of linseed as a result of PXS application may be due to improvement in root development and vegetative growth. Yield and yield attributes also showed significantly effect of sulphur and phosphorus viz. number of capsule/plant, number of seed/capsule, seed yield/plant and stover yield/plant. 1000 seed test weight in sulphur showed non significant as compare to phosphorus. Tha plant height was significantly increase 15 kg/ha sulphur was at par 10 kg/ha of sulphur than phosphorus 40 kg/ha was at par in 30 kg/ha. Number of branches increased with decrease 40 kg/ha phosphorus and 15 kg/ha in sulphur was at with 10 kg/ha sulphur and 30 kg/ha phosphorus. The significant effect of sulphur and phosphorus on root length 40 kg/ha phosphorus was at par with 30 kg/ha and 15 kg/ha sulphur was at par with 10 kg/ha.</jats:p
Stability of half-metallic behavior with lattice variation for Fe2-xCoxMnAl Heusler alloy
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