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  1. Article ; Online: Enhancement of Quality of Power by Multilevel D-STATCOM in Distribution Network for Sustainable Power Networks

    V. Vijay Rama Raju / Doddi Bhavya / Dixit Saurav / B. Lingam

    E3S Web of Conferences, Vol 430, p

    2023  Volume 01002

    Abstract: Utility distribution networks, crucial commercial operations, and critical industrial loads can suffer considerable financial losses as a result of a variety of service interruptions and outages. In developing countries like India, where alterations in ... ...

    Abstract Utility distribution networks, crucial commercial operations, and critical industrial loads can suffer considerable financial losses as a result of a variety of service interruptions and outages. In developing countries like India, where alterations in power frequency and numerous other factors affecting power quality are a worry, it is crucial to take appropriate action to make power networks sustainable. To control and reduce voltage disturbances, a variety of techniques are available. For their benefits, including suitable output waveforms, inverters with multilevel outputs, such as multilevel D-STATCOMs, are frequently utilized in the power system and industry (voltage and current). Multilevel D-STATCOM control can be accomplished with several controllers. A closed loop controller is one of the controllers that use a feedback system to automatically control a system that ensures a desirable state or accepted value. Among the improvements are voltage sags and swells. The performance of the suggested controller is explained by contrasting it with both multilevel D-STATCOM and traditional PWM controls. In addition to its simplicity, robustness, and flexibility, the proposed method allows for all defects to be compensated.
    Keywords Environmental sciences ; GE1-350
    Language English
    Publishing date 2023-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: ANN Based Current Controller for Hybrid Electric Vehicles

    Nagendar Kavati / Rama Raju V. Vijaya

    E3S Web of Conferences, Vol 309, p

    2021  Volume 01065

    Abstract: The use of Hybrid Electric Vehicles (HEVs) across the world is growing enormously every day. The single-phase bi-directional convertors are presented in this study for HEVs on-board charging(OBC). In HEVs, we use power electronics converters for the ... ...

    Abstract The use of Hybrid Electric Vehicles (HEVs) across the world is growing enormously every day. The single-phase bi-directional convertors are presented in this study for HEVs on-board charging(OBC). In HEVs, we use power electronics converters for the converting and inverting operations. Artificial Neural Network(ANN) is presented in this study for simple operation and high optimization approaches. ANN control technique regulates the system's THD and enhances charging system optimization, enables two-way power delivery that is from the grid to vehicle and the vehicle to grid. An ANN based current controller model that achieves fast-dynamic reaction and that improves grid current harmonic characteristics is proposed in this study. The system's THD is reduced by the ANN controller being suggested. The results prove the validity and feasibility of design and control technique of the proposed integrated charging system.
    Keywords dc-dc bi-directional converters (bdcs) ; artificial neural network algorithms ; electric vehicles ; Environmental sciences ; GE1-350
    Subject code 629
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Characterization, catalytic, and recyclability studies of nano-sized spherical palladium particles synthesized using aqueous poly-extract (turmeric, neem, and tulasi)

    Velidandi, Aditya / Sarvepalli, Mounika / Gandam, Pradeep Kumar / Prashanth Pabbathi, Ninian Prem / Baadhe, Rama Raju

    Environmental Research. 2023 July, v. 228 p.115821-

    2023  

    Abstract: Green synthesis of noble metal nanoparticles (NPs) has gained immense significance compared to other metal ions owing to their unique properties. Among them, palladium ‘Pd’ has been in the spotlight for its stable and superior catalytic activity. This ... ...

    Abstract Green synthesis of noble metal nanoparticles (NPs) has gained immense significance compared to other metal ions owing to their unique properties. Among them, palladium ‘Pd’ has been in the spotlight for its stable and superior catalytic activity. This work focuses on the synthesis of Pd NPs using the combined aqueous extract (poly-extract) of turmeric (rhizome), neem (leaves), and tulasi (leaves). The bio-synthesized Pd NPs were characterized to study its physicochemical and morphological features using several analytical techniques. Role of Pd NPs as nano-catalysts in the degradation of dyes (1 mg/2 mL stock solution) was evaluated in the presence of a strong reducing agent (sodium borohydride; SBH). In the presence of Pd NPs and SBH, maximum reduction of methylene blue (MB), methyl orange (MO), and rhodamine-B (Rh–B) dyes was observed under 20nullmin (96.55 ± 2.11%), 36nullmin (96.96 ± 2.24%), and 27nullmin (98.12 ± 1.33%), with degradation rate of 0.1789 ± 0.0273 min⁻¹, 0.0926 ± 0.0102 min⁻¹, and 0.1557 ± 0.0200 min⁻¹, respectively. In combination of dyes (MB + MO + Rh–B), maximum degradation was observed under 50nullmin (95.49 ± 2.56%) with degradation rate of 0.0694 ± 0.0087 min⁻¹. It was observed that degradation was following pseudo-first order reaction kinetics. Furthermore, Pd NPs showed good recyclability up to cycle 5 (72.88 ± 2.32%), cycle 9 (69.11 ± 2.19%) and cycle 6 (66.21 ± 2.72%) for MB, MO and Rh–B dyes, respectively. Whereas, up to cycle 4 (74.67 ± 0.66%) during combination of dyes. As Pd NPs showed good recyclability, they can be used for several cycles thus influencing the overall economics of the process.
    Keywords Azadirachta indica ; biosynthesis ; catalytic activity ; economics ; methyl orange ; methylene blue ; nanocatalysts ; nanoparticles ; palladium ; reaction kinetics ; research ; rhizomes ; sodium borohydride ; turmeric ; Dye degradation ; Green synthesis ; Palladium nanoparticles ; Rhodamine-B ; BGE ; EDX ; FTIR ; FE-SEM ; FWHM ; NPs ; Pd NPs ; MB ; MO ; PSD ; PVDF ; Rh–B ; rT ; SBH ; SDDW ; UV–Vis spec ; XRD ; ZP
    Language English
    Dates of publication 2023-07
    Publishing place Elsevier Inc.
    Document type Article ; Online
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2023.115821
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Effect of size on physicochemical, antibacterial, and catalytic properties of Neolamarckia cadamba (burflower-tree) synthesized silver/silver chloride nanoparticles.

    Velidandi, Aditya / Sarvepalli, Mounika / Aramanda, Prasad / Amudala, Maha Lakshmi / Baadhe, Rama Raju

    Environmental science and pollution research international

    2023  Volume 30, Issue 22, Page(s) 63231–63249

    Abstract: Aqueous extract of Neolamarchia cadamba leaves were used in the synthesis of silver/silver chloride nanoparticles (Ag/AgCl NPs). Further they were separated based on their using step-wise centrifugation approach at 09,000, 12,000, and 15,000 rpm. Thus ... ...

    Abstract Aqueous extract of Neolamarchia cadamba leaves were used in the synthesis of silver/silver chloride nanoparticles (Ag/AgCl NPs). Further they were separated based on their using step-wise centrifugation approach at 09,000, 12,000, and 15,000 rpm. Thus obtained NPs were characterized for their physicochemical features. NPs showed maximum absorbance at 455 nm, 415 nm, and 402 nm. All the NPs were found to be crystalline in nature with average crystallite size (nm) of 58.31, 23.43, and 09.56. Particle size distribution (nm) of NPs was observed to 435.43, 276.75, and 105.49, Surface charge (-mV) of NPs was observed to be 14.59, 23.90, and 32.17. Ag/AgCl NPs-rpm@15,000 showed antibacterial activity against Escherichia coli, coagulase-negative Staphylococci, and Staphylococcus aureus with zone of inhibition (mm) of 16.65, 13.69, and 14.02 at 50 µg per well, respectively. Ag/AgCl NPs-rpm@15,000 showed excellent catalytic activity in degradation of methyl red, methylene blue, rhodamine-B, and methyl orange dyes in the presence of sodium borohydride under 4, 6, 5, and 4 min with pseudo-first order rate constant (min
    MeSH term(s) Metal Nanoparticles/chemistry ; Silver/chemistry ; Trees/metabolism ; Chlorides ; Coloring Agents/chemistry ; Anti-Bacterial Agents/chemistry ; Plant Extracts/chemistry
    Chemical Substances silver chloride (MWB0804EO7) ; Silver (3M4G523W1G) ; Chlorides ; Coloring Agents ; Anti-Bacterial Agents ; Plant Extracts
    Language English
    Publishing date 2023-03-24
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-023-26427-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Nafamostat has anti-asthmatic effects associated with suppressed pro-inflammatory gene expression, eosinophil infiltration and airway hyperreactivity.

    Allam, Venkata Sita Rama Raju / Waern, Ida / Taha, Sowsan / Akula, Srinivas / Wernersson, Sara / Pejler, Gunnar

    Frontiers in immunology

    2023  Volume 14, Page(s) 1136780

    Abstract: Introduction: Asthma is characterized by an imbalance between proteases and their inhibitors. Hence, an attractive therapeutic option could be to interfere with asthma-associated proteases. Here we exploited this option by assessing the impact of ... ...

    Abstract Introduction: Asthma is characterized by an imbalance between proteases and their inhibitors. Hence, an attractive therapeutic option could be to interfere with asthma-associated proteases. Here we exploited this option by assessing the impact of nafamostat, a serine protease inhibitor known to neutralize mast cell tryptase.
    Methods: Nafamostat was administered in a mouse model for asthma based on sensitization by house dust mite (HDM) extract, followed by the assessment of effects on airway hyperreactivity, inflammatory parameters and gene expression.
    Results: We show that nafamostat efficiently suppressed the airway hyperreactivity in HDM-sensitized mice. This was accompanied by reduced infiltration of eosinophils and lymphocytes to the airways, and by lower levels of pro-inflammatory compounds within the airway lumen. Further, nafamostat had a dampening impact on goblet cell hyperplasia and smooth muscle layer thickening in the lungs of HDM-sensitized animals. To obtain deeper insight into the underlying mechanisms, a transcriptomic analysis was conducted. This revealed, as expected, that the HDM sensitization caused an upregulated expression of numerous pro-inflammatory genes. Further, the transcriptomic analysis showed that nafamostat suppressed the levels of multiple pro-inflammatory genes, with a particular impact on genes related to asthma.
    Discussion: Taken together, this study provides extensive insight into the ameliorating effect of nafamostat on experimental asthma, and our findings can thereby provide a basis for the further evaluation of nafamostat as a potential therapeutic agent in human asthma.
    MeSH term(s) Humans ; Animals ; Mice ; Anti-Asthmatic Agents/therapeutic use ; Eosinophils/metabolism ; Cytokines/metabolism ; Asthma/metabolism ; Lung/metabolism ; Eosinophilia/metabolism ; Gene Expression
    Chemical Substances Anti-Asthmatic Agents ; nafamostat (Y25LQ0H97D) ; Cytokines
    Language English
    Publishing date 2023-04-21
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2023.1136780
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Characterization, catalytic, and recyclability studies of nano-sized spherical palladium particles synthesized using aqueous poly-extract (turmeric, neem, and tulasi).

    Velidandi, Aditya / Sarvepalli, Mounika / Gandam, Pradeep Kumar / Prashanth Pabbathi, Ninian Prem / Baadhe, Rama Raju

    Environmental research

    2023  Volume 228, Page(s) 115821

    Abstract: Green synthesis of noble metal nanoparticles (NPs) has gained immense significance compared to other metal ions owing to their unique properties. Among them, palladium 'Pd' has been in the spotlight for its stable and superior catalytic activity. This ... ...

    Abstract Green synthesis of noble metal nanoparticles (NPs) has gained immense significance compared to other metal ions owing to their unique properties. Among them, palladium 'Pd' has been in the spotlight for its stable and superior catalytic activity. This work focuses on the synthesis of Pd NPs using the combined aqueous extract (poly-extract) of turmeric (rhizome), neem (leaves), and tulasi (leaves). The bio-synthesized Pd NPs were characterized to study its physicochemical and morphological features using several analytical techniques. Role of Pd NPs as nano-catalysts in the degradation of dyes (1 mg/2 mL stock solution) was evaluated in the presence of a strong reducing agent (sodium borohydride; SBH). In the presence of Pd NPs and SBH, maximum reduction of methylene blue (MB), methyl orange (MO), and rhodamine-B (Rh-B) dyes was observed under 20nullmin (96.55 ± 2.11%), 36nullmin (96.96 ± 2.24%), and 27nullmin (98.12 ± 1.33%), with degradation rate of 0.1789 ± 0.0273 min
    MeSH term(s) Palladium/chemistry ; Curcuma ; Metal Nanoparticles/chemistry ; Water ; Coloring Agents/chemistry ; Catalysis ; Methylene Blue/chemistry
    Chemical Substances holy basil leaf extract (SCJ765569P) ; Palladium (5TWQ1V240M) ; Water (059QF0KO0R) ; Coloring Agents ; methyl orange (6B4TC34456) ; Methylene Blue (T42P99266K)
    Language English
    Publishing date 2023-04-03
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2023.115821
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Disruption of the mast cell carboxypeptidase A3 gene does not attenuate airway inflammation and hyperresponsiveness in two mouse models of asthma.

    Waern, Ida / Akula, Srinivas / Allam, Venkata Sita Rama Raju / Taha, Sowsan / Feyerabend, Thorsten B / Åbrink, Magnus / Wernersson, Sara

    PloS one

    2024  Volume 19, Issue 4, Page(s) e0300668

    Abstract: Mast cells are effector cells known to contribute to allergic airway disease. When activated, mast cells release a broad spectrum of inflammatory mediators, including the mast cell-specific protease carboxypeptidase A3 (CPA3). The expression of CPA3 in ... ...

    Abstract Mast cells are effector cells known to contribute to allergic airway disease. When activated, mast cells release a broad spectrum of inflammatory mediators, including the mast cell-specific protease carboxypeptidase A3 (CPA3). The expression of CPA3 in the airway epithelium and lumen of asthma patients has been associated with a Th2-driven airway inflammation. However, the role of CPA3 in asthma is unclear and therefore, the aim of this study was to investigate the impact of CPA3 for the development and severity of allergic airway inflammation using knockout mice with a deletion in the Cpa3 gene. We used the ovalbumin (OVA)- and house-dust mite (HDM) induced murine asthma models, and monitored development of allergic airway inflammation. In the OVA model, mice were sensitized with OVA intraperitoneally at seven time points and challenged intranasally (i.n.) with OVA three times. HDM-treated mice were challenged i.n. twice weekly for three weeks. Both asthma protocols resulted in elevated airway hyperresponsiveness, increased number of eosinophils in bronchoalveolar lavage fluid, increased peribronchial mast cell degranulation, goblet cell hyperplasia, thickening of airway smooth muscle layer, increased expression of IL-33 and increased production of allergen-specific IgE in allergen-exposed mice as compared to mocktreated mice. However, increased number of peribronchial mast cells was only seen in the HDM asthma model. The asthma-like responses in Cpa3-/- mice were similar as in wild type mice, regardless of the asthma protocol used. Our results demonstrated that the absence of a functional Cpa3 gene had no effect on several symptoms of asthma in two different mouse models. This suggest that CPA3 is dispensable for development of allergic airway inflammation in acute models of asthma in mice.
    MeSH term(s) Animals ; Mice ; Allergens/metabolism ; Asthma ; Bronchoalveolar Lavage Fluid ; Carboxypeptidases/metabolism ; Disease Models, Animal ; Inflammation/genetics ; Inflammation/metabolism ; Lung/metabolism ; Mast Cells/metabolism ; Mice, Inbred BALB C ; Ovalbumin/metabolism
    Chemical Substances Allergens ; Carboxypeptidases (EC 3.4.-) ; Ovalbumin (9006-59-1) ; Cpa3 protein, mouse (EC 3.4.17.1)
    Language English
    Publishing date 2024-04-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0300668
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: From the desk of the business manager

    Rama Raju Devaraju

    Journal of Indian Academy of Oral Medicine and Radiology, Vol 27, Iss 3, Pp 337-

    2015  Volume 337

    Keywords Dentistry ; RK1-715 ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
    Language English
    Publishing date 2015-01-01T00:00:00Z
    Publisher Wolters Kluwer Medknow Publications
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article ; Online: Integrating Aerial Electric Vehicles for Sustainable Agriculture and to Optimize the Overhead Cost of Farming

    V. Vijaya Rama Raju / Varma Sai Nikhila / Vangari Pratheek / Kumar Sumit / Joshi Kapil / Penta Samyuktha

    E3S Web of Conferences, Vol 430, p

    2023  Volume 01003

    Abstract: India is a country whose roots are buried deep in agriculture. The livelihood of about 58% of the population depends on farming. Yet technological progress in the country’s agricultural practices is lacking. The growing technology and increased demand ... ...

    Abstract India is a country whose roots are buried deep in agriculture. The livelihood of about 58% of the population depends on farming. Yet technological progress in the country’s agricultural practices is lacking. The growing technology and increased demand for agriculture calls for the incorporation of technology into sustainable agriculture. The proposed work, therefore aimed at building a drone to serve this purpose. The rapid growth of the Electric Vehicle (EV) market and India’s aim to shift to the complete use of EVs by the year 2023 demand a paradigm shift in the agriculture sector. The use of aerial electric vehicles would be an impeccable execution of EVs in agriculture, serving a vast set of functions. The proposed work focuses on one specific application: remote spraying of pesticides in an efficient way so that the overhead costs of farming are reduced. The harmful effects of exposure to pesticides are eminent. Farmers who take it upon themselves to spray these pesticides are at risk of contracting a wide range of health adversities and deadly chronic diseases. As a solution to this imminent need, it is proposed to design a drone to spray pesticides according to the requirement, as directed by the farmer. The Agriculture Drone has a hexagonal structure controlled using BLDC motors and Electronic Speed Controllers (ESCs). For flight control, Pixhawk 2.4.6 is used. It is equipped with a GPS module that can track the location of the drone and plan its mission. The drone operates on autopilot and requires no manual control for flight. Specific coordinates are given to the Drone so that it moves along the given coordinates for its flight using the software ‘Mission Planner.’ The designed drone has a removable tank for the storage of pesticides, which is placed under the landing gear. The tank has a spraying system that operates on the instructions of the farmer, which are given to the drone using a Radio transmitter.
    Keywords Environmental sciences ; GE1-350
    Language English
    Publishing date 2023-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: Zn-ion Batteries: Charge Storing Mechanism and Development Challenges.

    Chodankar, Nilesh R / Shinde, Pragati A / Patil, Swati J / Rama Raju, Ganji Seeta / Hwang, Seung-Kyu / Marje, Supriya J / Tyagaraj, Harshitha B / Al Hajri, Ebrahim / Al Ghaferi, Amal / Huh, Yun Suk / Han, Young-Kyu

    ChemSusChem

    2023  Volume 16, Issue 21, Page(s) e202300730

    Abstract: Improving the energy share of renewable energy technologies is the only solution to reduce greenhouse gas emissions and air pollution. The high-performing green battery energy storage technologies are critical for storing energy to address the ... ...

    Abstract Improving the energy share of renewable energy technologies is the only solution to reduce greenhouse gas emissions and air pollution. The high-performing green battery energy storage technologies are critical for storing energy to address the intermittent nature of renewable energy resources. In recent years, aqueous batteries, particularly Zn-ion batteries (ZIBs), have achieved and shown great potential for stationary energy storage systems owing to their low cost and safer operation. However, the practical applications of the ZIBs have significantly been impeded due to the gap between the breakthroughs achieved in academic research and industrial developments. The present review discusses the ZIB's advantages, possibilities, and shortcomings for stationary energy storage systems. The Review begins with a brief introduction to the ZIBs and their charge storage mechanisms based on the structural properties of cathode materials. The scientific and technical challenges that obstruct the commercialization of the ZIBs are discussed in detail concerning their impact on accelerating the utilization of the ZIBs for real-life applications. The final section highlights the outlook on research in this flourishing field.
    Language English
    Publishing date 2023-08-17
    Publishing country Germany
    Document type Journal Article ; Review
    ISSN 1864-564X
    ISSN (online) 1864-564X
    DOI 10.1002/cssc.202300730
    Database MEDical Literature Analysis and Retrieval System OnLINE

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