147 results on '"R. Vinoth Kumar"'
Search Results
2. A distinct strain of tomato leaf curl New Delhi virus that causes mosaic disease in ash gourd and other cucurbitaceous crops
- Author
-
S. Vignesh, P. Renukadevi, K. Nagendran, N. Senthil, R. Vinoth Kumar, R. SwarnaPriya, Tusar Kanti Behera, and G. Karthikeyan
- Subjects
begomovirus ,pathogenesis ,evolution ,agro-inoculation ,cucurbits ,qPCR ,Microbiology ,QR1-502 - Abstract
Ash gourd (Benincasa hispida) is a cucurbitaceous crop cultivated as an edible vegetable rich in vitamins, minerals, dietary fibers and antioxidants. In a field survey conducted in the Udumalpet region of Tamil Nadu during 2019, the incidence of mosaic disease on ash gourd crop was observed to be 75%. The DNA-A and DNA-B components of begomovirus genome have been identified as associated with this disease. Both the cloned DNA-A and DNA-B genomic components shared highest pairwise sequence identities with the isolates of tomato leaf curl New Delhi virus (ToLCNDV), a bipartite begomovirus. Recombinant analysis showed that both the components are possibly evolved through intra-species recombination between ToLCNDV isolates. Tomato leaf curl Bangladesh betasatellite (ToLCBB) is not naturally associated with this sample. The results of infectivity studies on ash gourd and other cucurbitaceous crops demonstrates the Koch’s postulates, when co-inoculation of DNA-A and DNA-B of ToLCNDV was undertaken. However, the inoculation of non-cognate ToLCBB along with DNA-A and DNA-B enhances the symptom expression and reduces the time taken for symptom development. Thus, Koch’s postulates were proved for these virus complexes on cucurbitaceous crops. Furthermore, an enhanced accumulation of DNA-A component was detected in the cucurbits co-inoculated with ToLCNDV and ToLCBB. This report highlights the importance of investigating the spread of these disease complexes with other cucurbitaceous crops in India.
- Published
- 2023
- Full Text
- View/download PDF
3. Tangential microfiltration of lime and pineapple juices using inexpensive tubular ceramic membrane and analysis of fouling mechanism
- Author
-
K.V.V. Satyannarayana and R. Vinoth Kumar
- Subjects
Ceramic membrane ,Microfiltration ,Citrus fruits ,Juice clarification ,Fouling analysis ,Food processing and manufacture ,TP368-456 - Abstract
A non-thermal tangential filtration of lime and pineapple juices using an indigenously elaborated inexpensive bentonite-based tubular ceramic membrane (96 $/m2) is discussed in the present work. The fabricated membrane exhibited a porosity of 37% with 0.11 µm pore size and possessed adequate flexural stability of 18 MPa. Microfiltration experiments were conducted for both centrifuged juice (CJ) and Enzymatic treated centrifuged juice (ETCJ) of lime and pineapple at various operating pressures (69 – 345 kPa) and crossflow rates (110 – 150 Lph) to evaluate their effects on the resulting permeate flux and clarified juice properties. The membrane provided a maximum permeate flux of both ETCJ of lime and pineapple juices as 2.22 × 10−5 m3/m2s and 1.31 × 10−5 m3/m2s, respectively, at operating conditions of 345 kPa pressure and 150 Lph flowrate. Enzymatic pretreatment considerably enhanced the permeate fluxes of both juices. Also, comparatively a high clarity and complete removal of alcohol-insoluble solids were observed for permeate streams of ETCJ. In all the cases, the desirable characteristics of citrus juices, including pH, total soluble solids, and citric acid content, were unaltered, ensuring the uniqueness of the membrane separation processes. Furthermore, fouling analysis was carried out using Hermia's models, revealing experimental data best fits into the cake filtration model for pineapple juice and intermediate pore blocking model for lime juice clarification are identified as dominant mechanisms, respectively.
- Published
- 2023
- Full Text
- View/download PDF
4. Insights on applications of low-cost ceramic membranes in wastewater treatment: A mini-review
- Author
-
S. Lakshmi Sandhya Rani and R. Vinoth Kumar
- Subjects
Wastewater treatment ,Low-cost raw materials ,Ceramic membranes ,Environmental engineering ,TA170-171 ,Chemical engineering ,TP155-156 - Abstract
In recent decades, rapid industrialization resulting in the generation of a massive amount of wastewater. Petrochemical, textile, tannery, and dairy industries, etc., generate wastewater consisting of high concentrations of oils, fats, chemical oxygen demand (COD), biological oxygen demand (BOD), and total suspended solids (TSS). Therefore, treating industrial effluents before disposing them into water bodies is mandatory to avoid water contamination. Membrane technology is promising over other technologies in wastewater treatment due to its environmentally friendly nature, operability with less energy requirement, and high separation efficiency. Specifically, ceramic membranes are associated with numerous advantages, including excellent thermal and chemical stability, mechanical strength, fouling resistance, and durability. These properties made ceramic membranes more suitable over polymeric membranes, especially for water treatment applications. However, expensive raw materials and the requirement of high sintering temperatures made ceramic membranes uneconomical. Therefore, several researchers focused on producing ceramic membranes from alternative or low-cost raw materials to reduce the cost of membranes. This review is aimed to present current signs of progress in inexpensive raw materials to prepare ceramic membranes. The influence of various parameters, including sintering temperature, the composition of raw materials, and type of fabrication technique on membrane properties such as pore size, porosity, and flexural strength, are discussed in detail. Furthermore, wastewater treatment applications of low-cost ceramic membranes, including oily wastewater treatment, dairy wastewater treatment, heavy metal ion removal, textile effluent treatment, poultry slaughterhouse effluent treatment, paper and pulp industry wastewater treatment, and separation of bacteria and viruses from contaminated water are presented. Finally, future scope and challenges for further improving low-cost ceramic membranes are also emphasized in this review.
- Published
- 2021
- Full Text
- View/download PDF
5. Removal of chromium from synthetic wastewater using MFI zeolite membrane supported on inexpensive tubular ceramic substrate
- Author
-
R. Vinoth Kumar and G. Pugazhenthi
- Subjects
chromium removal ,hydrothermal treatment ,MFI ,zeolite membrane ,Water supply for domestic and industrial purposes ,TD201-500 - Abstract
A mordenite framework inverted (MFI) type zeolite membrane was produced on inexpensive tubular ceramic substrate through hydrothermal synthesis and applied for the removal of chromium from synthetic wastewater. The fabricated ceramic substrate and membrane was characterized by diverse standard techniques such as X-ray diffraction, field emission scanning electron microscope, porosity, water permeability and pore size measurements. The porosity of the ceramic substrate (53%) was reduced by the deposition of MFI (51%) zeolite layer. The pore size and water permeability of the membrane was evaluated as 0.272 μm and 4.43 × 10–7 m3/m2s.kPa, respectively, which are lower than that of the substrate pore size (0.309 μm) and water permeability (5.93 × 10–7 m3/m2s.kPa) values. To identify the effectiveness of the prepared membrane, the applied pressure of the filtration process and initial chromium concentration and cross flow rate were varied to study their influence on the permeate flux and percentage of removal. The maximum removal of chromium achieved was 78% under an applied pressure of 345 kPa and an initial feed concentration of 1,000 ppm. Finally, the efficiency of the membrane for chromium removal was assessed with other membranes reported in the literature.
- Published
- 2017
- Full Text
- View/download PDF
6. Removal of trivalent metal ions from aqueous solution via cross-flow ultrafiltration system using zeolite membranes
- Author
-
Ashim Kumar Basumatary, R. Vinoth Kumar, Kannan Pakshirajan, and G. Pugazhenthi
- Subjects
membrane separations ,pollutants ,separation ,water treatment ,zeolites ,Water supply for domestic and industrial purposes ,TD201-500 - Abstract
This study aimed to assess the performance of three zeolite membranes in the removal of trivalent metal ions from aqueous solution using a cross-flow mode of operation. Three types of zeolite membrane, MCM-41, MCM-48 and FAU, were prepared on a low-cost, circular ceramic support by hydrothermal treatment. The three zeolite membranes were characterized by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and contact angle measurements. The XRD results confirmed the formation of zeolites. The deposition of zeolite on the ceramic support and hydrophilicity of zeolite membranes were monitored by FESEM and contact angle measurement, respectively. The pore size of the MCM-41, MCM-48 and FAU membrane was found to be 0.173 μm, 0.142 μm, and 0.153 μm, respectively, which was lower than that of the support (1.0 μm). The fabricated zeolite membranes were used to investigate the separation behavior of trivalent metal ions (Al3+ and Fe3+) from aqueous solution at various applied pressures. It was observed that an increase of applied pressure leads to a slight decrease in the removal efficiency. Among the various zeolite membranes, the FAU membrane showed the maximum rejection of 88% and 83% for Fe3+ and Al3+ separation, respectively.
- Published
- 2017
- Full Text
- View/download PDF
7. Plant Antiviral Immunity Against Geminiviruses and Viral Counter-Defense for Survival
- Author
-
R. Vinoth Kumar
- Subjects
virus ,macromolecular trafficking ,post-translational modification ,hormone signaling ,antiviral response ,vector transmission ,Microbiology ,QR1-502 - Abstract
The family Geminiviridae includes plant-infecting viruses whose genomes are composed of one or two circular non-enveloped ssDNAs(+) of about 2.5–5.2 kb each in size. These insect-transmissible geminiviruses cause significant crop losses across continents and pose a serious threat to food security. Under the control of promoters generally located within the intergenic region, their genomes encode five to eight ORFs from overlapping viral transcripts. Most proteins encoded by geminiviruses perform multiple functions, such as suppressing defense responses, hijacking ubiquitin-proteasomal pathways, altering hormonal responses, manipulating cell cycle regulation, and exploiting protein-signaling cascades. Geminiviruses establish complex but coordinated interactions with several host elements to spread and facilitate successful infection cycles. Consequently, plants have evolved several multilayered defense strategies against geminivirus infection and distribution. Recent studies on the evasion of host-mediated resistance factors by various geminivirus proteins through novel mechanisms have provided new insights into the development of antiviral strategies against geminiviruses. This review summarizes the current knowledge concerning virus movement within and between cells, as well as the recent advances in our understanding of the biological roles of virus-encoded proteins in manipulating host-mediated responses and insect transmission. This review also highlights unexplored areas that may increase our understanding of the biology of geminiviruses and how to combat these important plant pathogens.
- Published
- 2019
- Full Text
- View/download PDF
8. Processing and characterization of polystyrene nanocomposites based on CoAl layered double hydroxide
- Author
-
Kelothu Suresh, R. Vinoth Kumar, and G. Pugazhenthi
- Subjects
Polystyrene ,Layered double hydroxides ,Nanocomposites ,Kinetic ,Rheology ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
The present work deals with the development of polystyrene (PS) nanocomposites through solvent blending technique with diverse contents of modified CoAl layered double hydroxide (LDH). The prepared PS as well as PS/CoAl LDH (1–7 wt.%) nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), rheological analysis, thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The XRD results suggested the formation of exfoliated structure, while TEM images clearly indicated the intercalated morphology of PS nanocomposites at higher loading. The presence of various functional groups in the CoAl LDH and PS/CoAl LDH nanocomposites was verified by FTIR analysis. TGA data confirmed that the thermal stability of PS composites was enhanced significantly as compared to pristine PS. While considering 15% weight loss as a reference point, it was found that the thermal degradation (Td) temperature increased up to 28.5 °C for PS nanocomposites prepared with 7 wt.% CoAl LDH loading over pristine PS. All the nanocomposite samples displayed superior glass transition temperature (Tg), in which PS nanocomposites containing 7 wt.% LDH showed about 5.5 °C higher Tg over pristine PS. In addition, the kinetics for thermal degradation of the composites was studied using Coats-Redfern method. The Criado method was ultimately used to evaluate the decomposition reaction mechanism of the nanocomposites. The complex viscosity and rheological muduli of nanocomposites were found to be higher than that of pristine PS when the frequency increased from 0.01 to 100 s−1.
- Published
- 2016
- Full Text
- View/download PDF
9. A simple solvent blending coupled sonication technique for synthesis of polystyrene (PS)/multi-walled carbon nanotube (MWCNT) nanocomposites: Effect of modified MWCNT content
- Author
-
Payel Sen, Kelothu Suresh, R. Vinoth Kumar, Manish Kumar, and G. Pugazhenthi
- Subjects
Solvent blending ,Nanocomposite ,Ultrasonication ,Thermal degradation ,Rheology ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
The influence of carboxylic acid functionalized multi-walled carbon nanotubes (cMWCNTs) content on the properties of polystyrene (PS) nanocomposite (NC) films was investigated. The NC films were produced by a simple sonication assisted solvent blending technique. The interaction between the matrix (PS) and well dispersed filler (cMWCNT) was evaluated by different techniques involving Fourier transform infrared spectroscopy, Raman spectroscopy and X-Ray diffraction. Morphological images of the NCs were collected from Transmission electron microscopy. The thermal characteristics of the PS were found to be improved by the incorporation of the cMWCNTs, which was evident from the Thermogravimetric analysis (TGA) data. The thermal degradation activation energy evaluated by Coats-Redfern method and integral procedural decomposition temperature determined by Doyle's method supported the thermal stability proposed by TGA of the NCs. The reaction mechanism of thermal degradation of neat PS and respective NCs was successfully predicted using Criado method. The rheological properties and hardness were found to be upgraded by the inclusion of nanotubes to the PS matrix.
- Published
- 2016
- Full Text
- View/download PDF
10. Clarification of citrus fruit juices using microfiltration technique equipped with indigenously developed novel ceramic membrane
- Author
-
K. V. V. Satyannarayana, S. Lakshmi Sandhya Rani, and R. Vinoth Kumar
- Subjects
Food Science - Published
- 2023
- Full Text
- View/download PDF
11. Study on mosaic disease of sponge gourd (Luffa cylindrica L.) caused by tomato leaf curl New Delhi virus
- Author
-
Nagendran Krishnan, Shweta Kumari, Tribhuvan Chaubey, R Vinoth Kumar, Manimurugan Chinnappa, Vikas Dubey, Koshlendra Kumar Pandey, Jagdish Singh, and Achuit Kumar Singh
- Subjects
Plant Science - Published
- 2023
- Full Text
- View/download PDF
12. DESIGN, CONSTRUCTION AND USES OF REMOVABLE APPLIANCES
- Author
-
M.K Karthikeyan, P. Raja Kumar, R. Vinoth Kumar, S. Kailash Kumar, P. J. Sophia Priscilla, I. Apparana, M. Ilanila, D. Bhavani, K. Gayathri, and Veena S Nair
- Abstract
The aim of this article is to depict the role of removable appliances in current, con- impermanent orthodontics, and to examine how this job has changed as of late. For the reasons for this article we will not talk about removable appliances that are utilized consistently and effectively for development modication (Functional appliances) or retention (retainers). This article will zero in on removable utilized as dynamic appliances. How removable appliances work. Removable appliances work by straightforward tipping developments of the crowns of the teeth about a support near the center of the Tooth. They likewise permit differential emission of teeth, for instance by utilizing nibble planes. They contrast from xed appliances, which are equipped for complex developments of multiple teeth, including in essence movement, root force and revolution.
- Published
- 2022
- Full Text
- View/download PDF
13. Indigenous bentonite based tubular ceramic microfiltration membrane: Elaboration, characterization, and evaluation of environmental impacts using life cycle techniques
- Author
-
K.V.V. Satyannarayana, S. Lakshmi Sandhya Rani, S. Baranidharan, and R. Vinoth Kumar
- Subjects
Process Chemistry and Technology ,Materials Chemistry ,Ceramics and Composites ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials - Published
- 2022
- Full Text
- View/download PDF
14. ANCHORAGE PREPARATION FOR VARIOUS ORTHODONTIC TREATMENT
- Author
-
M.K Karthikeyan, P. Raja Kumar, R. Vinoth Kumar, S. Kailash Kumar, P. J. Sophia Priscilla, R. Karuna Thulasi, D. Soundarya, M. Preethi, L. Bharath Yadhav, and B. Prasanna Venkatesh
- Abstract
There are many kinds of orthodontic movements that make the clinical schedule a genuine test. With the appearance of the skeletal anchorage, it became more straightforward to take care of numerous issues, like anchorage, tipping, interruption among others. The reason for this article was to survey outright anchorage, including signs, implantation site, and any kind of orthodontic element.
- Published
- 2022
- Full Text
- View/download PDF
15. Preparation and evaluation of matrix type of transdermal patches containing anti –diabetic drug
- Author
-
K L Senthil Kumar, null P D Gokulan, A Vasanthan, S Venkateswaran, H Santhosh, R Vinoth kumar, and S Ragul
- Subjects
Automotive Engineering - Abstract
The current research aims to formulate and evaluated medicated transdermal patches containing an anti-diabetic drug. A good penetration enhancer would improve drug delivery from various polymer-based transdermal patches. Transdermal patches of the matrix type are made. Using various PVP K30, MC ratios and solvent evaporation techniques. All prepared formulations were tested for weight variation, thickness, drug content, moisture content, moisture uptake, flatness, and in vitro drug release. Bath F3 was optimised formula from all formulation baths shows linear zero order release for 24 hours, with a cumulative percentage of drug diffusion of 87.35% from 4cm2 patches. It has been determined that polymer concentration. When the concentration of PVP K30 increases in the primary layer, the in – vitro diffusion rate increases, and when the concentration of PVP K30 decreases, the drug diffusion decreases. It allows for more controlled drug release from the patch.
- Published
- 2022
- Full Text
- View/download PDF
16. Fouling Mechanisms in Nanofiltration Membranes
- Author
-
K. V. V. Satyannarayana, S. Lakshmi Sandhya Rani, Chellaboyina Bharath Mathaji, and R. Vinoth Kumar
- Published
- 2023
- Full Text
- View/download PDF
17. Phytochemical and Physicochemical Evaluation of Marine Red Algae Laurencia papillosa (C. Agardh) Greville
- Author
-
B Sathish Kumar, Manam Vishnu Kiran, R Vinoth Kumar, and S Murugesan
- Abstract
Seaweeds are potential marine renewable assets for food, feed, and medicine since ancient times. Considering the latent characteristics of seaweeds, the prevailing has a look at the goal which has to assess the phytochemical composition of methanol extract of underexploited marine red alga Laurencia papillosa. The phytochemical analyses of L. papillosa confirmed the presence of nine phytochemicals amongst which glycosides had been discovered to be the very best with a value of 125.57 ± 3.52 mg/g dry wt, wherein because the saponins were found to be lesser in amount with the value of 2.68 ± 1.97 mg/g dry wt. The function of fluorescence emission and pharmacognosical capabilities which include the total ash content and the extractive values of the red alga L. papillosa analyzed. The results affirm that the chosen seaweed has energetic phytochemical content which will be a capacity supply for antimicrobial, antioxidant, and cytotoxic interest and the methanol extract of L. papillosa will be explored for its robust pharmacological activities in the drug development by the pharmaceuticals.
- Published
- 2022
- Full Text
- View/download PDF
18. Bhendi Yellow Vein Mosaic Virus and Bhendi Yellow Vein Mosaic Betasatellite Cause Enation Leaf Curl Disease and Alter Host Phytochemical Contents in Okra
- Author
-
Achuit K. Singh, P. M. Singh, Jagdish Singh, Tania Seth, Shweta Kumari, R. Vinoth Kumar, Brijesh K. Yadav, Bijendra Singh, Ram Krishna, Nagendran Krishnan, Gyan P. Mishra, and Suhas G. Karkute
- Subjects
0301 basic medicine ,Enation ,Host (biology) ,Phytochemicals ,030106 microbiology ,Begomovirus ,food and beverages ,Plant Science ,Whitefly ,Biology ,biology.organism_classification ,03 medical and health sciences ,Horticulture ,030104 developmental biology ,Phytochemical ,Abelmoschus ,Disease management (agriculture) ,DNA, Viral ,Bhendi yellow vein mosaic virus ,Leaf curl ,Agronomy and Crop Science ,Phylogeny ,Plant Diseases - Abstract
Whitefly (Bemisia tabaci)-transmitted begomoviruses cause severe diseases in numerous economically important dicotyledonous plants. Okra enation leaf curl disease (OELCuD) has emerged as a serious threat to okra (Abelmoschus esculentus L. Moench) cultivation in the Indian subcontinent. This study reports the association of a monopartite begomovirus (bhendi yellow vein mosaic virus; BYVMV) and betasatellite (bhendi yellow vein mosaic betasatellite; BYVB) with OELCuD in the Mau region of Uttar Pradesh, India. The BYVMV alone inoculated Nicotiana benthamiana and A. esculentus cv. Pusa Sawani plants developed mild symptoms. Co-inoculation of BYVMV and BYVB resulted in a reduced incubation period, an increased symptom severity, and an enhanced BYVMV accumulation by Southern hybridization and quantitative real-time PCR. This is the first study that satisfies Koch’s postulates for OELCuD in its natural host. Activities of various antioxidative enzymes were significantly increased in the virus-inoculated okra plants. Differential responses in various biochemical components (such as photosynthetic pigments, phenol, proline, and sugar) in diseased okra plants were observed. This change in phytochemical responses is significant in understanding its impact on virus pathogenesis and disease development.
- Published
- 2021
- Full Text
- View/download PDF
19. SOC Implementation of HMM Based Speaker Independent Isolated Digit Recognition System.
- Author
-
V. Amudha, B. Venkataramani, R. Vinoth Kumar, and S. Ravishankar
- Published
- 2007
- Full Text
- View/download PDF
20. Design and Deployment of Secured Cloud Assist IIoT - SCADA System for Real Time Parameter Monitoring and Control in Process Control Applications
- Author
-
D. Deivasigamani and R. Vinoth Kumar
- Published
- 2022
- Full Text
- View/download PDF
21. Analytical Study of Diagnostic Role of Her2/Neu Expression In Gastroesophageal Lesions
- Author
-
G. Bheema Rao, Abid Ashraf Sheikh, R. Vinoth Kumar, and S. Mary Lilly
- Subjects
medicine.medical_specialty ,business.industry ,Context (language use) ,medicine.disease ,Gastroenterology ,Metastasis ,medicine.anatomical_structure ,Leiomyoma ,Hyperplastic Polyp ,Internal medicine ,medicine ,Esophagus ,Stage (cooking) ,business ,Grading (tumors) ,Esophagitis - Abstract
Esophageal squamous cell carcinoma is one of the common types of malignant lesion and has its highest prevalence round the world. Though it is a common disorder, many of the patients only diagnose it in its advanced stage and these results in poor prognosis of the disease. In later stage, these lesions may severely develop in to lymph node metastasis and has more chances to spread across any of the vital organs. Barrett‟s esophagus, herpes simplex esophagitis, candidial esophagitis, leiomyoma, hyperplastic polyps are few of the benign and premalignant type of lesions. The advancement in endoscopy has opened many opportunities and diagnosis of all esophageal lesions became simple and effective. As the surgical procedures associated with the targeted therapy have become promising option for the treatment, many patients are being benefited out of technological advancement. The surplus of malignancies such as esophagus, esophago- gastric junction and stomach have become a significant health problem and threatening the people all over the world. Delayed diagnosis on these disorders particularly resulting in high mortality ratio and warrant for a systematic evaluation in patients. In this context, the present study analyse the association and prognostic significance of HER2/ neu in gastroesophageal lesions with other factors like age, size, histological type and grading and the incidence and distribution of gastroesophageal lesions in patients.
- Published
- 2021
- Full Text
- View/download PDF
22. Role of Immunohistochemistry Versus he Stain in Helicobacter pylori Detection in Gastric Lesions
- Author
-
Ponnuswamy Karkuzhali, J. Thanka, Ayushi Narain, and R. Vinoth Kumar
- Subjects
Pathology ,medicine.medical_specialty ,biology ,business.industry ,Atrophic gastritis ,Stomach ,digestive, oral, and skin physiology ,H&E stain ,Helicobacter pylori ,Pylorus ,medicine.disease ,biology.organism_classification ,digestive system diseases ,Greek language ,medicine.anatomical_structure ,medicine ,Helicobacter ,Gastritis ,medicine.symptom ,business - Abstract
Helicobacter pylori are a spiral campylobacter like bacteria which infects the stomach causing chronic active gastritis. This can result in peptic ulcer disease, gastric adenocarcinoma, and mucosa-associated lymphoid tissue lymphoma. In 1989, studies involving 16S ribosomal RNA gene sequencing and others revealed that the bacterium does not come under the genus Campylobacter. Hence the bacterium was classified under a unique genus named Helicobacter. This term is taken from the Greek language with helix meaning - "spiral" or "coil" and pylori meaning- gatekeeper (pylorus of stomach). This bacterium is said to penetrate the pylori or mucoid lining of the stomach. When infected during the early stages of life, people develop intense inflammation that may be followed by atrophic gastritis which serves as a risk factor for gastric ulcer, gastric cancer or both. Being infected during later stages of life changes the gastric system leading to duodenal ulcer. The present study analyzes the role of Immunohistochemistry versus Hematoxylin and Eosin and special stains in detecting Helicobacter pylori in gastric lesions.
- Published
- 2021
- Full Text
- View/download PDF
23. Diverse begomovirus-betasatellite complexes cause tomato leaf curl disease in the western India
- Author
-
null Sangeeta, R Vinoth Kumar, Brijesh K Yadav, Bhavin S Bhatt, Ram Krishna, Nagendran Krishnan, Suhas G Karkute, Sudhir Kumar, Bijendra Singh, and Achuit K Singh
- Subjects
Cancer Research ,Infectious Diseases ,Virology - Published
- 2023
- Full Text
- View/download PDF
24. HOME AUTOMATION USING INTERNET OF THINGS WITH SECURITY SYSTEM
- Author
-
M. Karthikeyan, S. Prabakaran, P. V. Aravind, and R. Vinoth Kumar
- Subjects
Computer science ,Home automation ,business.industry ,business ,Internet of Things ,Computer security ,computer.software_genre ,computer ,Security system - Published
- 2020
- Full Text
- View/download PDF
25. A novel monopartite begomovirus and satellites associated with yellow mosaic disease of Sida spp. in India
- Author
-
Brijesh K. Yadav, Achuit K. Singh, Fenisha D. Chahwala, Sangeeta Rathore, Bijendra Singh, R. Vinoth Kumar, and Dhananjay Kumar Singh
- Subjects
0303 health sciences ,Veterinary medicine ,biology ,030306 microbiology ,Host (biology) ,fungi ,Begomovirus ,food and beverages ,Sida Plant ,Mosaic (geodemography) ,General Medicine ,biology.organism_classification ,Virology ,Virus ,03 medical and health sciences ,Alphasatellite ,Sida ,Weed ,030304 developmental biology - Abstract
Begomoviruses (family Geminiviridae) cause severe diseases in many economically important crops and non-cultivated plants in the warmer regions of the world. Non-cultivated weeds have been reported to act as natural virus reservoirs. In January 2016, Sida plants with yellow mosaic symptoms were found at the edge of an agricultural field in Gujarat, India. Sequence analysis of the viral genomic components cloned from a diseased Sida plant indicated the presence of a distinct monopartite begomovirus (proposed as sida yellow mosaic Gujarat virus) along with a betasatellite (ludwigia leaf distortion betasatellite) and an alphasatellite (malvastrum yellow mosaic alphasatellite). Our results emphasize that this weed may harbor a begomovirus-alphasatellite-betasatellite complex. This host serves as a potential source of virus inoculum, which can be transmitted by whiteflies to other cultivated crops.
- Published
- 2020
- Full Text
- View/download PDF
26. Advanced oxidation technologies combined with direct contact membrane distillation for treatment of secondary municipal wastewater
- Author
-
R. Vinoth Kumar, Marta O. Barbosa, M. Fernando R. Pereira, Sergio Morales-Torres, Ana R. Ribeiro, and Adrián M.T. Silva
- Subjects
Detection limit ,021110 strategic, defence & security studies ,Environmental Engineering ,Ozone ,Chemistry ,General Chemical Engineering ,0211 other engineering and technologies ,02 engineering and technology ,010501 environmental sciences ,Permeation ,Membrane distillation ,Pulp and paper industry ,01 natural sciences ,Clarifier ,Membrane technology ,chemistry.chemical_compound ,Wastewater ,Dissolved organic carbon ,Environmental Chemistry ,Safety, Risk, Reliability and Quality ,0105 earth and related environmental sciences - Abstract
In this work, the combination of advanced oxidation technologies (AOTs) and direct contact membrane distillation (DCMD) was investigated for the treatment of municipal wastewater collected from the secondary clarifier of a municipal wastewater treatment plant (MWWTP). Average removal efficiencies of the 12 micropollutants present in the wastewater samples were higher than 95 % with ozonation (O3) and photolytic ozonation (UV/O3), whereas only near 50 % of removal efficiency was achieved with UV-peroxidation (UV/H2O2). When the ozone-based processes were combined with DCMD, the concentration of these micropollutants were below the detection limits in the respective permeate, increasing the quality of the treated water. However, the permeate fluxes in DCMD were remarkably higher when the wastewater was pre-treated with UV/H2O2 instead of O3, most probably due to the better disinfection achieved by UV/H2O2. It was also confirmed that the dissolved organic carbon (DOC) of the wastewater strongly affects the permeate fluxes achieved by DCMD. In this regard, the combination of the oxidation and membrane separation processes is more appropriate for wastewaters with low DOC contents (
- Published
- 2020
- Full Text
- View/download PDF
27. Association of a begomovirus-satellite complex with yellow vein and leaf curl disease of hollyhock (Alcea rosea) in India
- Author
-
Supriya Chakraborty, R. Vinoth Kumar, and Manish Kumar
- Subjects
0303 health sciences ,Veterinary medicine ,biology ,030306 microbiology ,fungi ,Begomovirus ,India ,food and beverages ,General Medicine ,biology.organism_classification ,Virology ,Crop ,03 medical and health sciences ,Satellite Viruses ,New delhi ,Leaf curl ,Potential source ,Malvaceae ,Phylogeny ,Plant Diseases ,030304 developmental biology ,Alcea rosea - Abstract
Geminiviruses cause considerable yield loss in several crop plants worldwide. In 2016, several hollyhock plants displaying yellow mosaic and leaf curling symptoms were noticed in a nursery of Jawaharlal Nehru University, New Delhi, India. Analysis of the collected samples indicated an association of monopartite and bipartite begomoviruses with satellites. Three begomoviruses (including a member of a new begomovirus species), two alphasatellites, and a betasatellite were isolated from yellow-mosaic-disease-affected plants. Similarly, a begomovirus, two alphasatellites, and a betasatellite were found to be associated with leaf curl disease of hollyhock. These begomoviruses and satellites were found to be recombinants. By harboring diverse begomoviruses and satellite DNAs, hollyhock may serve as a potential source of virus inoculum.
- Published
- 2020
- Full Text
- View/download PDF
28. Ransomware Traffic Classification Using Deep Learning Models
- Author
-
D. Arivudainambi, P. Visu, R Vinoth Kumar, and K A Varun Kumar
- Subjects
business.industry ,Computer science ,Deep learning ,020206 networking & telecommunications ,02 engineering and technology ,Machine learning ,computer.software_genre ,020202 computer hardware & architecture ,Computer Science Applications ,Traffic classification ,0202 electrical engineering, electronic engineering, information engineering ,Ransomware ,Artificial intelligence ,business ,computer - Abstract
Ransomware is a malware which affects the systems data with modern encryption techniques, and the data is recovered once a ransom amount is paid. In this research, the authors show how ransomware propagates and infects devices. Live traffic classifications of ransomware have been meticulously analyzed. Further, a novel method for the classification of ransomware traffic by using deep learning methods is presented. Based on classification, the detection of ransomware is approached with the characteristics of the network traffic and its communications. In more detail, the behavior of popular ransomware, Crypto Wall, is analyzed and based on this knowledge, a real-time ransomware live traffic classification model is proposed.
- Published
- 2020
- Full Text
- View/download PDF
29. List of contributors
- Author
-
Samuel Abebrese, Noemi Lizbeth Acuña-Flores, Mustafa Adhab, Joseph Adjebeng-Danquah, Parinita Agarwal, Pradeep K. Agarwal, Richard Yaw Agyare, Nawres A. Alkuwaiti, Benjamin Annor, Leonardo D. Arévalo-Monterrubio, José Trinidad Ascencio-Ibáñez, Alexandre Autechaud, Bhagirath M. Baraiya, Natalia Barboza, Mritunjoy Barman, Kwabena Asare Bediako, Eduardo R. Bejarano, Zineb Belabess, Sachin Ashok Bhor, Araceli G. Castillo, Supriya Chakraborty, Swati Chakraborty, Chinnaraja Chinnadurai, Aparna Chodon, Tathagata Choudhuri, Henryk Czosnek, Sarbani Das, Samantha de Jesus Rivero-Montejo, Ragunathan Devendran, Subham Dutta, Vincent N. Fondong, Elizabeth P.B. Fontes, Murad Ghanim, Prabu Gnanasekaran, Alireza Golnaraghi, Gokul Uttamgir Gosavi, Martine Granier, Ramón Gerardo Guevara-González, Vipin Hallan, Luko Hilje, Shridhar Hiremath, Yasir Iftikhar, Shaikhul Islam, Margaux Jammes, Jayaraj Jayaraman, Ajeet Kumar Jha, Jeyalakshmi Karanthamalai, Jawaid A. Khan, Zainul A. Khan, Mounika Kollam, Nagendran Krishnan, Aditya Kulshreshtha, Abhinav Kumar, Alok Kumar, Manish Kumar, R. Vinoth Kumar, Rakesh Kumar, Sailendra Kumar, Shweta Kumari, C.N. Lakshminarayana Reddy, Rosa Lozano-Durán, Israel Macias-Bobadilla, Lalit Mahatma, T. Makeshkumar, V.G. Malathi, Aakansha Manav, Anirban Mandal, Mahsa Mansourpour, M. Mantesh, Humberto Martínez-Montoya, Yamila Martínez-Zubiaur, Laura Mejía-Teniente, Leander Dede Melomey, Ritesh Mishra, M. Mohanraj, Prashant More, Mustansar Mubeen, Arindam Mukherjee, S. Nakkeeran, Michael Kwabena Osei, Koshlendra Kumar Pandey, Gopal Pandi, Harshalkumar P. Patel, Michel Peterschmitt, Malyaj R. Prajapati, Ved Prakash, null Priyanka, Nguyen Bao Quoc, Gabriel S. Raimundo, S.K. Raj, Adesh Ramsubhag, Koushlesh Ranjan, P. Renukadevi, Kumari Rhaeva, Luisa Katiana Rivas-Ramirez, Poonam Roshan, Nabanita Roy Chattopadhyay, Faustine Ryckebusch, Snigdha Samanta, B. Sangeetha, V.K. Satya, Nicolas Sauvion, Sangeeta Saxena, M. Senthil Alias Sankar, Niayesh Shahmohammadi, K.S. Shankarappa, Fredy Davi A. Silva, Jitender Singh, Sneha Sinha, Sunil Kumar Snehi, Ashish Srivastava, Sukumaran Sunitha, Jayanta Tarafdar, Jebasingh Tennyson, Ajay Kumar Tiwari, Reyna Ivonne Torres-Acosta, Rodolfo Torres-delosSantos, Irineo Torres-Pacheco, Eric Troadec, Muhammad Umer, Cica Urbino, Marcela Vargas-Hernandez, V. Venkataravanappa, Heshani De Silva Weligodage, Mengshi Wu, Sneha Yogindran, and Muhammad Ahmad Zeshan
- Published
- 2022
- Full Text
- View/download PDF
30. Overview of host factors and geminivirus proteins involved in virus pathogenesis and resistance
- Author
-
Ved Prakash, Ragunathan Devendran, R. Vinoth Kumar, and Prabu Gnanasekaran
- Published
- 2022
- Full Text
- View/download PDF
31. Geminivirus infections co-opt posttranslational modification of proteins during viral pathogenesis
- Author
-
Manish Kumar, Ragunathan Devendran, and R. Vinoth Kumar
- Published
- 2022
- Full Text
- View/download PDF
32. Insights on applications of low-cost ceramic membranes in wastewater treatment: A mini-review
- Author
-
R. Vinoth Kumar and S. Lakshmi Sandhya Rani
- Subjects
Materials science ,General Chemical Engineering ,Low-cost raw materials ,Chemical oxygen demand ,Ceramic membranes ,Environmental engineering ,Wastewater treatment ,Environmental Science (miscellaneous) ,TA170-171 ,Pulp and paper industry ,Membrane technology ,Membrane ,Chemical engineering ,Wastewater ,visual_art ,visual_art.visual_art_medium ,Environmental Chemistry ,Sewage treatment ,TP155-156 ,Ceramic ,Engineering (miscellaneous) ,Effluent ,Total suspended solids - Abstract
In recent decades, rapid industrialization resulting in the generation of a massive amount of wastewater. Petrochemical, textile, tannery, and dairy industries, etc., generate wastewater consisting of high concentrations of oils, fats, chemical oxygen demand (COD), biological oxygen demand (BOD), and total suspended solids (TSS). Therefore, treating industrial effluents before disposing them into water bodies is mandatory to avoid water contamination. Membrane technology is promising over other technologies in wastewater treatment due to its environmentally friendly nature, operability with less energy requirement, and high separation efficiency. Specifically, ceramic membranes are associated with numerous advantages, including excellent thermal and chemical stability, mechanical strength, fouling resistance, and durability. These properties made ceramic membranes more suitable over polymeric membranes, especially for water treatment applications. However, expensive raw materials and the requirement of high sintering temperatures made ceramic membranes uneconomical. Therefore, several researchers focused on producing ceramic membranes from alternative or low-cost raw materials to reduce the cost of membranes. This review is aimed to present current signs of progress in inexpensive raw materials to prepare ceramic membranes. The influence of various parameters, including sintering temperature, the composition of raw materials, and type of fabrication technique on membrane properties such as pore size, porosity, and flexural strength, are discussed in detail. Furthermore, wastewater treatment applications of low-cost ceramic membranes, including oily wastewater treatment, dairy wastewater treatment, heavy metal ion removal, textile effluent treatment, poultry slaughterhouse effluent treatment, paper and pulp industry wastewater treatment, and separation of bacteria and viruses from contaminated water are presented. Finally, future scope and challenges for further improving low-cost ceramic membranes are also emphasized in this review.
- Published
- 2021
33. Modeling and Simulation of Lift Axle Control System at Vehicle Level Using AMESim
- Author
-
Pendyala, Vamsi Krishna, primary, T, Sukumar, additional, and R, Vinoth Kumar, additional
- Published
- 2021
- Full Text
- View/download PDF
34. Membrane bioreactor and integrated membrane bioreactor systems for micropollutant removal from wastewater: A review
- Author
-
Lalit N. Goswami, N. Arul Manikandan, R. Vinoth Kumar, Gopal Pugazhenthi, Siddhartha Narayan Borah, and Kannan Pakshirajan
- Subjects
Waste management ,Process Chemistry and Technology ,0208 environmental biotechnology ,02 engineering and technology ,010501 environmental sciences ,Membrane bioreactor ,01 natural sciences ,020801 environmental engineering ,Wastewater ,Environmental science ,Sewage treatment ,Operational costs ,Safety, Risk, Reliability and Quality ,Waste Management and Disposal ,Effluent ,Operating cost ,0105 earth and related environmental sciences ,Biotechnology - Abstract
Over the last few decades, the presence of micropollutants in the wastewater stream is imposing a serious concern worldwide. Membrane bioreactor (MBR) technology has been widely employed for the treatment of wastewater contaminated with micropollutants. Hence, the aim of this paper is to provide a consolidate review on the present state of research and advancement in MBR technology along with its augmentation with other wastewater treatment technologies for micropollutant removal, sustainability, and operating cost assessment for its feasibility. The potential application of MBR and hybrid-MBR systems in micropollutant removal along with the fate, removal mechanism, various factors affecting the MBR system efficiency and the operational cost involved were also been discussed in detail. Further, based on the available technologies on MBR, the authors discussed the future research perspective for micropollutant removal from the effluent stream with an objective of the circular economy.
- Published
- 2018
- Full Text
- View/download PDF
35. BioMicrobialdiesel Production using Microbes in General
- Author
-
R. Vinoth Kumar, I. Ganesh Moorthy, K. V. V. Satyannarayana, and Randeep Singh
- Subjects
Methods of production ,Biodiesel ,Diesel fuel ,Lubricity ,Biofuel ,Biodiesel production ,food and beverages ,Environmental science ,Transesterification ,Pulp and paper industry ,complex mixtures ,Environmentally friendly - Abstract
This chapter discusses the role of microbes (oleaginous microbes), namely microalgae, bacteria, fungi, or yeast, through the transesterification process used in the production of biodiesel. At present, the most extensively used biofuels are bioethanol and biodiesel. Biodiesel production through a microbial system is consequently receiving growing concentration as sustainable, alternative, and cost-effective. Microbial lipids have the high content of a saponifiable material and a suitable fatty acid profile for biodiesel production. Biodiesel fuel is better than petrodiesel in many characteristics, for instance, it is environmentally friendly, has reduced emissions, improved lubricity, a higher combustion efficiency, renewability, and safer. The physical and chemical properties and characteristics of microbial biodiesel are discussed in this chapter. In addition, it provides complete details about the importance, methods of production, applications, and benefits of microbial biodiesel.
- Published
- 2021
- Full Text
- View/download PDF
36. SCADA based real time monitoring and control for process control plants using industrial IoT
- Author
-
R. Vinoth Kumar, D. Deivasigamani, P. Shakthipriya, and N. Kavitha
- Subjects
business.product_category ,Computer science ,business.industry ,Real-time computing ,Process (computing) ,ComputerApplications_COMPUTERSINOTHERSYSTEMS ,Cloud computing ,Automation ,SCADA ,Internet access ,Process control ,Wireless ,business ,Cloud storage - Abstract
In this paper we have developed real time process station monitoring with control using IIoT. Moreover the parameters in the process industries like Level, Flow and temperature can be monitored and controlled using cloud storage also presented. Cloud refers to accessing computer information and software applications internet connectivity. We have used ‘ThingSpeak’ IoT analytics platform to aggregate, visualize and analyze all our real time readings of a process control plants. Moreover it can be implemented with LabVIEW for more flexibility. In this system the parameters like flow, temperature, pressure, level can be monitored and controlled wirelessly through wireless devices. In case of any emergency, an alarm system is used to intimate the conditions to the end user. The wireless transmitter has been incorporated in the process station to send data periodically and the receiving section consists of a Wi-fi module in order to receive the transmitted data, they are then stored in a cloud platform through which the data can be accessed as well as control wirelessly by the remote devices such as PC, mobile phones, tablets, etc. Moreover, it can be integrated to automation tools like SCADA, PLC with bidirectional mode of control to ensure operational safety and efficiency with recent automation protocols.
- Published
- 2021
- Full Text
- View/download PDF
37. Contributors
- Author
-
Nasim Ahmed, Imran Amin, Shamresh Anand, Surabhi Awasthi, Mirza S. Baig, S.K. Chakrabarti, Ornela Chase, Reshu Chauhan, Xiaofei Cheng, Gilbert Nchongboh Chofong, Henryk Czosnek, null Daliyamol, Filza Fatma, Inmaculada Ferriol, R.K. Gaur, Murad Ghanim, Rena Gorovits, Om Prakash Gupta, Aradhana Lucky Hans, D. Michael Immanuel Jesse, Tennyson Jebasingh, A. Jeevalatha, Hira Kamal, K. Kathiravan, Jawaid A. Khan, S.M. Paul Khurana, Kappei Kobayashi, R. Vinoth Kumar, Juan José López-Moya, Yameng Luan, Bikash Mandal, Shahid Mansoor, Avinash Marwal, Janos Minarovits, Megha Mishra, Neeti Sanan Mishra, Ritesh Mishra, S.U. Mohammed Riyaz, Sunil Mukherjee, Raghvendra Pratap Narayan, Nikolay Petrov, Ved Prakash, Devendran Ragunathan, Katja R. Richert-Pöggeler, Anirban Roy, Anurag Kumar Sahu, Elangovan Sangeetha, Sangeeta Saxena, Pradeep Sharma, Sunil K. Sharma, Dinesh Kumar Singh, Garima Singroha, Antoniy Stoev, Mariya Stoyanova, Savarni Tripathi, Priyanka Varun, Rakesh Kumar Verma, Xiaoyun Wu, Dinesh Kumar Yadav, Neelam Yadav, Sarika Yadav, and Zhimin Yin
- Published
- 2021
- Full Text
- View/download PDF
38. Molecular biology of antiviral arms race between plants and viruses
- Author
-
Ved Prakash, R. Vinoth Kumar, and Devendran Ragunathan
- Subjects
Genetics ,RNA silencing ,Evolutionary arms race ,RNA interference ,viruses ,Transgene ,fungi ,Plant defense against herbivory ,Gene silencing ,Genetically modified crops ,Biology ,Virus - Abstract
Plant defense and viral counter defense is a continuous evolutionary arms race. Upon virus infection, RNA silencing (RNAi) acts as the primary line of host-mediated innate defense response in plants. Viruses can trigger the RNAi mechanism through the generation of viral dsRNAs, however they also have evolved ways to suppress RNAi by encoding silencing suppressor proteins called as viral suppressors of RNAi (VSRs). This chapter discusses about the molecular mechanism of RNAi by plants to defend against virus infection and the way the virus-encoded VSRs to counteract this innate defense strategy. One of the potential applications in understanding the molecular mechanisms of RNAi is the generation of transgenic plants that resist virus infections. For several years, transgenic approaches were employed by manipulating this gene silencing machinery to trigger antiviral resistance. Considering the concerns of transgenic methods, several non-transgenic approaches are attempted to fight these viruses.
- Published
- 2021
- Full Text
- View/download PDF
39. A novel monopartite begomovirus and satellites associated with yellow mosaic disease of Sida spp. in India
- Author
-
Fenisha D, Chahwala, Dhananjay, Singh, R Vinoth, Kumar, Sangeeta, Rathore, Brijesh K, Yadav, Bijendra, Singh, and Achuit K, Singh
- Subjects
Hemiptera ,Geminiviridae ,Sida Plant ,Begomovirus ,Satellite Viruses ,DNA, Viral ,Animals ,India ,Plant Weeds ,Genome, Viral ,Sequence Analysis, DNA ,Phylogeny ,Plant Diseases - Abstract
Begomoviruses (family Geminiviridae) cause severe diseases in many economically important crops and non-cultivated plants in the warmer regions of the world. Non-cultivated weeds have been reported to act as natural virus reservoirs. In January 2016, Sida plants with yellow mosaic symptoms were found at the edge of an agricultural field in Gujarat, India. Sequence analysis of the viral genomic components cloned from a diseased Sida plant indicated the presence of a distinct monopartite begomovirus (proposed as sida yellow mosaic Gujarat virus) along with a betasatellite (ludwigia leaf distortion betasatellite) and an alphasatellite (malvastrum yellow mosaic alphasatellite). Our results emphasize that this weed may harbor a begomovirus-alphasatellite-betasatellite complex. This host serves as a potential source of virus inoculum, which can be transmitted by whiteflies to other cultivated crops.
- Published
- 2020
40. Membrane Technology in Bioprocess Engineering
- Author
-
R. Vinoth Kumar, Randeep Singh, K. V. V. Satyannarayana, and I. Ganesh Moorthy
- Subjects
Membrane ,Bioprocess engineering ,Computer science ,Microfiltration ,SCALE-UP ,Fruit juice ,Biochemical engineering ,Nanofiltration ,Reverse osmosis ,Membrane technology - Abstract
This chapter discusses about the role of membrane processes, namely, microfiltration, ultrafiltration, nanofiltration, and reverse osmosis in the field of bioprocess engineering. Membrane processes are widely accepted and used techniques in separation and filtration applications because of their unique and beneficial properties, such as low cost, environment friendliness, ease to scale up, ease to integrate with other processes, and compactness. Therefore, their use and implementation in various fields of bioprocess engineering helps in saving a lot of energy and resources. The basic concept and fundamentals along with the classification of different types of membranes and membrane systems are explained with suitable examples. The important applications of membrane technology in various fields of bioprocess engineering, such as food, pharmaceuticals, and biotechnology, are also discussed along with their advantages over other conventional separation techniques. The main applications where membrane processes proved their worth are virus purification, sterilization of heat labile products, concentration of food and dairy products, separation and filtration of racemic and azeotropic mixtures, fruit juice clarification, and beer and wine production. Hence, this chapter provides complete details about the importance, applications, and benefits of membrane technology in the field of bioprocess engineering.
- Published
- 2020
- Full Text
- View/download PDF
41. Process optimization and characterization of pectin derived from underexploited pineapple peel biowaste as a value-added product
- Author
-
Perumal Varalakshmi, Sean P. Rigby, Michael Rahul Soosai, Rajaram Shyam Kumar, Nagamalai Sakthi Vignesh, Sankar Karthikumar, Chellam Somasundarar Shivamathi, Abdallah M. Elgorban, R. Vinoth Kumar, Rajoo Baskar, Innasi Muthu Ganesh Moorthy, Asad Syed, and Sathaiah Gunaseelan
- Subjects
Chromatography ,food.ingredient ,Pectin ,Ion exchange ,Chemistry ,General Chemical Engineering ,Sonication ,Extraction (chemistry) ,General Chemistry ,food ,Yield (chemistry) ,Fermentation ,Response surface methodology ,DEAE-Cellulose ,Food Science - Abstract
Biowastes generated from the food processing industries cause environmental issues due to nitrogen, phosphorous, macronutrients, and water contents. These nutrients make the wastes more susceptible to fermentation, thus causing pollution. However, these biowastes contain a high level of marketable bioproducts extracted for value-added products like pectin. The current study deals with the pectin extraction from pineapple peel (PP) waste employing the ultrasound-assisted extraction (UAE) technique. Further, response surface methodology (RSM) was employed to determine the optimum conditions for maximum pectin extraction using independent variables like ultrasonication time (15–30 min), liquid to solid (LS) ratio (10–20 mL/g), temperature (50–80 °C) and pH (1–2). A maximum pectin yield (16.24%) was attained at 15.20 mL/g of LS ratio, 21.88 min of ultrasonication, 70.83 °C and pH 1.0. The extracted pectin was purified using anion exchange chromatography (DEAE cellulose), and the purity index was 89.5–90%. The purified pectin fractions were analyzed through thin-layer chromatography and characterized by SEM, FT-IR, TGA, XRD, 1D and 2D NMR. The polysaccharide content was quantified using the phenol-sulfuric assay. Other functional properties like emulsification, oil and water holding capacity were also measured. In addition, based on antinutritional and antioxidant properties, the extracted PP pectin was confirmed to be a toxic-free compound. A detailed structural and physio-chemical properties study confirmed the pectin from PP was of good quality and could be utilized as a value-added product in the pharmaceutical industry.
- Published
- 2022
- Full Text
- View/download PDF
42. Fabrication of industrially feasible zeolite membrane for the removal of hexavalent chromium
- Author
-
R. Vinoth Kumar, Ashim Kumar Basumatary, and G. Pugazhenthi
- Subjects
Renewable Energy, Sustainability and the Environment ,Geography, Planning and Development ,Management, Monitoring, Policy and Law - Published
- 2022
- Full Text
- View/download PDF
43. Dynamics of a geminivirus-encoded pre-coat protein and host RNA-dependent RNA polymerase 1 in regulating symptom recovery in tobacco
- Author
-
Supriya Chakraborty, Ashish Kumar Singh, Saumik Basu, R. Vinoth Kumar, Nirbhay Kumar Kushwaha, and Pranav Pankaj Sahu
- Subjects
0301 basic medicine ,Physiology ,short interfering RNA ,viruses ,Nicotiana tabacum ,RNA-dependent RNA polymerase ,Plant Science ,Biology ,Virus ,03 medical and health sciences ,RNA interference ,Plant virus ,Tobacco ,RNA polymerase I ,Plant Diseases ,Plant Proteins ,fungi ,pre-coat protein ,food and beverages ,RNA ,RNA-Dependent RNA Polymerase ,RNA-dependent RNA polymerase 1 ,biology.organism_classification ,Virology ,RNA silencing ,Geminiviridae ,030104 developmental biology ,Plant—Environment Interactions ,Begomovirus ,Host-Pathogen Interactions ,Capsid Proteins ,RNA Interference ,Research Paper ,symptom remission - Abstract
ToLCNDV-AV2 is essential for repression of - antiviral silencing mediated by RNA-dependent RNA polymerase 1 and is responsible for contrasting symptom development in Nicotiana species infected with different geminiviruses., RNA silencing is an integral part of the cellular defense mechanisms in plants that act against virus infection. However, the specific role of RNA silencing and the interplay between host and virus components during recovery from geminivirus infection remains unknown. Hence, in this study we aimed to examine the mechanism behind the host-specific recovery of Nicotiana tabacum infected with Tomato leaf curl Gujarat virus (ToLCGV). Unlike Tomato leaf curl New Delhi virus (ToLCNDV), ToLCGV infection resulted in symptom remission in N. tabacum, and we found that this was mainly due to cross-talk between the pre-coat protein (encoded by the AV2 ORF) of the virus and the host RNA-silencing component RNA-dependent RNA polymerase 1 (encoded by NtRDR1) of N. tabacum. Moreover, apart from the AV2 mutant, other mutants of ToLCNDV developed severe symptoms on a transgenic NtRDR1-overexpression line of N. benthamiana. In contrast, inoculation with ToLCGV resulted in symptom remission, which was due to enhanced methylation of the ToLCGV promoter. Our study reveals a novel ‘arms race’ in which the pre-coat protein of ToLCNDV selectively blocks the recovery process through inhibiting host-specific RDR1-mediated antiviral silencing in tobacco.
- Published
- 2018
- Full Text
- View/download PDF
44. A Simple Sonication Assisted Solvent Blending Route for Fabrication of Exfoliated Polystyrene (PS)/Clay Nanocomposites: Role of Various Clay Modifiers
- Author
-
Ritu Rajkumar Surin, R. Vinoth Kumar, Gopal Pugazhenthi, K. Suresh, and Manish Kumar
- Subjects
Nanocomposite ,Materials science ,Rheometry ,Sonication ,Xylene ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Solvent ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,Organoclay ,Polystyrene ,Fourier transform infrared spectroscopy ,0210 nano-technology - Abstract
This work attempts to study the properties of polystyrene (PS) nanocomposites prepared with 3 wt.% nanoclay containing four different organomodifiers such as (25-30 wt.% trimethyl stearly ammonium (Clay 1), 25-30 wt.% octadecylamine (Clay 2), 25-30 wt% methyl dihydroxyethyl hydrogenated tallow ammonium (Clay 3) and 35-45 wt.% dimethyl dialkyl (C14-C18) amine (Clay 4). Various PS nanocomposites were synthesized by ultrasonication assisted solvent-based mixing technique using xylene as solvent. Structural, thermal and rheological properties of PS nanocomposites were analyzed by XRD, TEM, FTIR, TGA and rotational rheometer. TEM images affirmed the formation of partially exfoliated structure of PS nanocomposites with these clays. All the PS/organoclay nanocomposites are thermally more stable than that of pristine PS. When 15% weight loss is taken as a reference point, the degradation temperature of PS nanocomposites prepared with clay 1 is about 18.1 °C higher than that of pristine PS. The thermal degradation kinetics of different nanocomposites is also determined. It is observed that the rheological moduli and complex viscosity of PS/organoclay nanocomposites are more than that of pristine PS in the frequency sweep at a fixed temperature of 190 °C.
- Published
- 2018
- Full Text
- View/download PDF
45. Rheological Behavior of Polystyrene (PS)/Co-Al Layered Double Hydroxide (LDH) Blend Solution obtained Through Solvent Blending Route: Influence of LDH Loading and Temperature
- Author
-
R. Vinoth Kumar, Gopal Pugazhenthi, Rijumoni Boro, K. Suresh, and Manish Kumar
- Subjects
Materials science ,Shear viscosity ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Shear rate ,Solvent ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,Rheology ,Hydroxide ,Polystyrene ,Fourier transform infrared spectroscopy ,Sulfate ,0210 nano-technology - Abstract
This investigation deals with the preparation of organically modified Co-Al layered double hydroxide (LDH) and influence of its loading and temperature on the rheological behavior of polystyrene (PS)/Co-Al LDH blends prepared via solvent blending method (SBM). Firstly, Co-Al LDH was synthesized by co-precipitation technique. Thereafter, PS blends with various LDHs content (3, 5 and 7 wt.% with respect to pure PS) were synthesized by SBM. The structural properties of the modified Co-Al LDH were characterized by XRD and FTIR analysis. The d-spacing value of modified LDH was found to be 2.8 nm by XRD analysis. The existence of sulfate groups in the modified LDH was affirmed by FTIR analysis. Rheological studies were done for the prepared samples in the shear rate array of 0.1-100 s -1 at various temperatures (20, 30 and 40 °C). It was observed that the rheology of PS solution is influenced by increasing Co-Al LDH loading, shear rate and temperature. All PS/Co-Al LDH blends showed an increment in their shear viscosity than pure PS. Also, the rheological data were fitted with different models, namely, Power law, Casson, Cross, Sisko, Herschel-Bulkley and Carreau models, to explain the rheological behavior. The results clearly indicated that Herschel-Buckley model displays good fit at lower temperature (20 °C), whereas Cross model offers best fit at higher temperatures (30 and 40 °C) for both pure PS and PS solution with various concentration of Co-Al LDH.
- Published
- 2018
- Full Text
- View/download PDF
46. Insights about sustainable biodiesel production from microalgae biomass: A review
- Author
-
Rahul S, Michael, primary, MA, Sundaramahalingam, additional, CS, Shivamthi, additional, R, Shyam Kumar, additional, P, Varalakshmi, additional, S, Karthikumar, additional, J, Kanimozhi, additional, R, Vinoth Kumar, additional, S, Sabarathinam, additional, I, Ganesh Moorthy, additional, and A, Pugazhendhi, additional
- Published
- 2020
- Full Text
- View/download PDF
47. Comparison of the Periodontal Status of Patients Undergoing Labial and Lingual Orthodontic Therapy
- Author
-
V, Vijaykumar, primary, R, Vinoth Kumar, additional, Archana, Durvasulu, additional, Sekar, Abinesh, additional, Deepak, Arun, additional, Umapathy, Vivekanandhan, additional, and P, Rajakumar, additional
- Published
- 2020
- Full Text
- View/download PDF
48. Integrated adsorption-membrane filtration process for antibiotic removal from aqueous solution
- Author
-
R. Vinoth Kumar, Vibhu Sharma, Gopal Pugazhenthi, and Kannan Pakshirajan
- Subjects
Aqueous solution ,Ion exchange ,Chemistry ,General Chemical Engineering ,Microfiltration ,Inorganic chemistry ,Langmuir adsorption model ,02 engineering and technology ,010501 environmental sciences ,021001 nanoscience & nanotechnology ,01 natural sciences ,Hydrophobic effect ,symbols.namesake ,Adsorption ,Membrane ,Ceramic membrane ,symbols ,0210 nano-technology ,0105 earth and related environmental sciences - Abstract
This study investigated the removal of two widely used antibiotics, norfloxacin (NOR) and ofloxacin (OFL) from aqueous solution by employing a novel integrated adsorption cum membrane filtration process. The application potential of the adsorbent was investigated by evaluating the effect of different process parameters; including solution pH, initial antibiotic concentration and adsorbent dosage. Among these parameters, solution pH significantly affected the removal of antibiotics due to its strong effect on the charges of the adsorbent and the adsorbate. The removal efficiency decreased with an increase in the initial antibiotics concentration and increased with an increase in the adsorbent amount. A maximum removal of 98.7% for NOR and 94.61% for OFL was achieved with 10 mg/L initial concentration and at a solution pH of 7. A high removal of NOR as compared with that of OFL was attributed to a high steric hindrance of OFL due to its bulky structure. The adsorption kinetic data for both the antibiotics followed the pseudo second order kinetics, and the sorption isotherm data was best described by the Langmuir model. Further, adsorption of the two antibiotics involved a combination of electrostatic interaction, anion exchange and hydrophobic interaction mechanisms. The FTIR spectrum of the modified LDH obtained before and after adsorption confirmed the adsorbate-adsorbent interaction. Finally, the microfiltration technique using a ceramic membrane was effectively employed to separate the loaded adsorbent from solution to recover and reuse the adsorbent with an aim to reduce the overall cost of the adsorption process.
- Published
- 2017
- Full Text
- View/download PDF
49. ANTIDIABETIC POTENTIAL OF MARINE RED ALGA CHAMPIA PARVULA (C. AGARDH) BY INHIBITING KEY METABOLIC ENZYMES
- Author
-
R Vinoth Kumar
- Subjects
Metabolic enzymes ,Botany ,Key (lock) ,Biology ,Champia parvula - Published
- 2017
- Full Text
- View/download PDF
50. Removal of chromium from synthetic wastewater using MFI zeolite membrane supported on inexpensive tubular ceramic substrate
- Author
-
Gopal Pugazhenthi and R. Vinoth Kumar
- Subjects
Materials science ,MFI ,Scanning electron microscope ,chemistry.chemical_element ,Filtration and Separation ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Mordenite ,Chromium ,hydrothermal treatment ,lcsh:Water supply for domestic and industrial purposes ,Ceramic ,zeolite membrane ,Zeolite ,Porosity ,Water Science and Technology ,lcsh:TD201-500 ,Chromatography ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,Field emission microscopy ,Membrane ,chemistry ,Chemical engineering ,visual_art ,visual_art.visual_art_medium ,0210 nano-technology ,chromium removal - Abstract
A mordenite framework inverted (MFI) type zeolite membrane was produced on inexpensive tubular ceramic substrate through hydrothermal synthesis and applied for the removal of chromium from synthetic wastewater. The fabricated ceramic substrate and membrane was characterized by diverse standard techniques such as X-ray diffraction, field emission scanning electron microscope, porosity, water permeability and pore size measurements. The porosity of the ceramic substrate (53%) was reduced by the deposition of MFI (51%) zeolite layer. The pore size and water permeability of the membrane was evaluated as 0.272 μm and 4.43 × 10–7 m3/m2s.kPa, respectively, which are lower than that of the substrate pore size (0.309 μm) and water permeability (5.93 × 10–7 m3/m2s.kPa) values. To identify the effectiveness of the prepared membrane, the applied pressure of the filtration process and initial chromium concentration and cross flow rate were varied to study their influence on the permeate flux and percentage of removal. The maximum removal of chromium achieved was 78% under an applied pressure of 345 kPa and an initial feed concentration of 1,000 ppm. Finally, the efficiency of the membrane for chromium removal was assessed with other membranes reported in the literature.
- Published
- 2017
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.