Search results for: Nitin Kumar

Items from 1 to 20 out of 386 results

article

Lockdown as an Empirical Strategy to Curb Air Pollution: Evidence from a Quasi‐Natural Experiment

Manish Yadav, Nitin Kumar Singh, Bhupendra Kumar Soni, Kusum Soni, more

CLEAN – Soil, Air, Water > 51 > 1 > n/a - n/a

In this study, three approaches namely parallel, sequential, and multiple linear regression are applied to analyze the local air quality improvements during the COVID‐19 lockdowns. In the present work, the authors have analyzed the monitoring data of the following primary air pollutants: particulate matter (PM₁₀ and PM_2.5), nitrogen dioxide (NO₂), sulfur dioxide (SO₂), and carbon monoxide (CO). During...

article

Understanding the helical stability of charged peptides

Nitin Kumar Singh, Manish Agarwal, Mithun Radhakrishna

Proteins: Structure, Function, and Bioinformatics > 91 > 2 > 268 - 276

Cationic helical peptides play a crucial role in applications such as anti‐microbial and anticancer activity. The activity of these peptides directly correlates with their helicity. In this study, we have performed extensive all‐atom molecular dynamics simulations of 25 Lysine–Leucine co‐polypeptide sequences of varying charge density (

λ

) and patterns. Our findings showed that, an increase in the...

article

Frequency regulation for microgrid using genetic algorithm and particle swarm optimization tuned STATCOM

Nitin Kumar Saxena, Wenzhong D. Gao, Ashwani Kumar, Saad Mekhilef, more

International Journal of Circuit Theory and Applications > 50 > 9 > 3231 - 3250

This paper presents the genetic algorithm (GA) and particle swarm optimization (PSO) based frequency regulation for a wind‐based microgrid (MG) using reactive power balance loop. MG, operating from squirrel cage induction generator (SCIG), is employed for exporting the electrical power from wind turbines, and it needs reactive power which may be imported from the grid. Additional reactive power is...

article

Cold plasma in food processing and preservation: A review

Sapna Birania, Arun Kumar Attkan, Sunil Kumar, Nitin Kumar, more

Journal of Food Process Engineering > 45 > 9 > n/a - n/a

The need for safe and healthy foods has increased since the turn of the century. Novel non‐thermal food processing technologies are being adopted by the food sector. Cold plasma (CP) is a proposed, non‐thermal food processing method that inactivates contaminating bacteria on foods and packing materials by using charged, highly reactive gaseous molecules and species. It was originally established...

article

A susceptibility putative haplotype within NLRP3 inflammasome gene influences ischaemic stroke risk in the population of Punjab, India

Nitin Kumar, Manminder Kaur, Gurjinderpal Singh, Srishti Valecha, more

International Journal of Immunogenetics > 49 > 4 > 260 - 270

Despite strong genetic implications of NLRP3 inflammasome, its examination as genetic determinant of ischaemic stroke (IS) remains to be done in Punjab, which has been investigated in this study. In this case control study, 400 subjects (200 IS patients, 200 stroke free controls) were included. Contributions of 5 single nucleotide polymorphisms (SNPs) including a functional SNP within NLRP3 gene (rs10754558,...

article

Physical mechanical, tribological, and thermal properties of new developed composites with Grewia optiva fiber and pan material

Naresh Kumar, Vikas Mehta, Sushil Kumar, Jaswinder Singh Grewal, more

Polymer Composites > 43 > 7 > 4749 - 4755

This research article has developed a novel composite material using natural fiber and PAN fiber. The study aims to remove harmful materials from the composites on the market these days. Asbestos and aramid fiber has good properties and is used in those composites where good mechanical properties are needed. However, using these materials causes many environmental issues and harms humans and other...

article

Evaluation of food packaging paper for microbial load and storage effect on the microbial activity of paper

Saher Zaidi, Mudita Vats, Nitin Kumar, Anuradha Janbade, more

Packaging Technology and Science > 35 > 7 > 569 - 577

Paper and paper board are an ideal choice of packaging material due to their biodegradability. They are safer than commonly used plastic packaging materials. But due to the presence of carbon sources like cellulose and starch in paper, various pathogenic and non‐pathogenic microbes can grow well in them. The migration of microorganisms or their spores from paper to food may cause serious health hazards...

article

Mass modeling of strawberry (Fragaria × Ananasa) based on selected physical attributes

Sapna Birania, Arun Kumar Attkan, Sunil Kumar, Nitin Kumar, more

Journal of Food Process Engineering > 45 > 5 > n/a - n/a

Strawberry (Fragaria × ananasa) is one of the most popular soft and delicious fruits used as such or for flavor production. In this study, different physical characteristics such as dimensions, weight, volume, geometric mean diameter, sphericity, and projected areas were determined and the prediction of mass based on these physical characteristics was done, using five models: linear, quadratic, power,...

article

Myeloid‐Specific PTP1B Deficiency Attenuates Inflammation‐Induced and Ovariectomy‐Induced Bone Loss in Mice by Inhibiting Osteoclastogenesis

Hyo Jeong Kim, Ka‐Young Ryu, Yong‐Gun Kim, Myoung Ok Kim, more

Journal of Bone and Mineral Research > 37 > 3 > 505 - 514

The differentiation and activity of bone‐resorbing osteoclasts are tightly regulated to maintain the homeostasis of healthy bones. In this study, the role of protein tyrosine phosphatase 1B (PTP1B) during osteoclastogenesis was studied in myeloid‐specific Ptpn1‐deficient (conditional knockout [cKO]) mice. The mRNA and protein expression of PTP1B increased during the formation of mature osteoclasts...

article

A novel Pinus roxburghii natural leaves fiber used as reinforcement polymer composite: As asbestos‐free brake friction material

Naresh Kumar, Jasmaninder Singh Grewal, Nitin Kumar, Sushil Kumar, more

Polymer Composites > 43 > 1 > 566 - 573

Nowadays, industries are increasing the use of natural fiber in many applications due to its cheap, eco‐friendly, and better mechanical properties. Asbestos and Kevlar, which are the most popular material, have been proven toxic and harmful to the environment and the human body. It has been proven that asbestos causes cancer, mesothelioma, and affects the respiratory system of humans. Moreover, the...

article

A novel Himachal’s Bagar (Sabai) grass fiber used as a brake friction material in brake polymer composite and compared to standard brake friction material

Naresh Kumar, J. S. Grewal, Sushil Kumar, Sarafat Ali, more

Polymer Composites > 43 > 1 > 215 - 224

Organic fibers are utilized these days in many applications because of their great mechanical properties. Organic fibers have replaced the synthetic fibers in various places. Previous research articles have told the potential of natural fiber reinforcement as a brake friction material, but there are very few research articles of comparative study of standard brake friction materials and natural fibers...

article

Advances in development of biodegradable food packaging material from agricultural and agro‐industry waste

Sapna Birania, Sunil Kumar, Nitin Kumar, Arun Kumar Attkan, more

Journal of Food Process Engineering > 45 > 1 > n/a - n/a

The preferment for farm mechanization and advancement in industrialization has augmented the agro‐industrial waste generation. The management of such numerous waste is a challenging and resource‐intensive task. The current practices involve releasing this waste into the water bodies and open landfills which causes water, air, and soil pollution. These wastes have the potential to be used as a raw...

article

Ultrasound and microwave‐assisted solvent extraction of mango kernel oil and evaluation of physicochemical properties and fatty acid profile

Peter Waboi Mwaurah, Sunil Kumar, Nitin Kumar, Arun Kumar Attkan, more

Journal of Food Processing and Preservation > 45 > 12 > n/a - n/a

The present study was conducted to evaluate and compare the efficacy of microwave‐assisted extraction (MAE) and a combination of ultrasound and MAE (UMAE) in extracting mango kernel oil (MKO), as well as studying the physicochemical properties and fatty acid composition of the extracted oil. Oil recovery by MAE and UMAE was 88.42 ± 1.36% and 96.67 ± 1.30%, respectively. The physicochemical properties...

article

Ultrasonic induced effect on mass transfer characteristics during osmotic dehydration of aonla (Phyllanthus emblica L.) slices: A mathematical modeling approach

Aryan Mehta, Amanjeet Singh, Akhand Pratap Singh, Pramod K. Prabhakar, more

Journal of Food Process Engineering > 44 > 12 > n/a - n/a

The present work aimed to investigate the effect of ultrasound pretreatment on osmotic dehydration of aonla slices. The aonla slices were subjected to an ultrasonic treatment with a frequency of 40 kHz for 10 min and then subjected to osmotic dehydration in 60°Bx sucrose solution for 300 min. Empirical models such as Azuara, Peleg, Weibull, Page, and Crank model were utilized to predict the kinetics...

article

Absence of right bundle branch block morphology in V1 during left bundle branch pacing. What is the mechanism?

Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Ali Shafeeq, Nitin Kumar Parashar, more

Journal of Cardiovascular Electrophysiology > 32 > 12 > 3217 - 3220

article

A study of moisture dependent changes in engineering properties and debranning characteristics of purple wheat

Praveen Saini, Nitin Kumar, Sunil Kumar, Peter Waboi Mwaurah, more

Journal of Food Processing and Preservation > 45 > 11 > n/a - n/a

To assess the efficient storage and processing yields, simultaneously reducing the qualitative and quantitative losses from wheat grains, it is necessary to consider and study their engineering properties. The present study was conducted to determine the moisture‐induced changes in the engineering properties and debranning characteristics of colored wheat varieties. Wheat was tempered to three moisture...

article

Effect of fluidized‐bed and freeze‐drying techniques on physicochemical, nutritional, thermal, and structural properties of Moringa oleifera flowers, leaves, and seeds

K. M. Manju, Rekha, Priyanka, Nitin Kumar

Journal of Food Processing and Preservation > 45 > 9 > n/a - n/a

The study evaluated the effect of fluidized bed drying (FBD) and freeze‐drying (FD) on physicochemical, nutritional, thermal, and structural properties of Moringa oleifera. The leaves’ and flowers’ powder was prepared by FBD at 50 ℃ outlet temperature and FD at −50 ℃, while seeds were germinated at 25 ℃ for 96 hr and dried. Seeds were also subjected to a fermentation process using Lactiplantibacillus plantarum...

article

Quality retention and shelf‐life prolongation of cucumbers (Cucumis sativus L.) under different cool storage systems with passive modified atmosphere bulk packaging

Preetinder Kaur, Kirandeep Devgan, Nitin Kumar, Amrit Kaur, more

Packaging Technology and Science > 34 > 9 > 567 - 578

Storage plays an important role in maintaining the post‐harvest shelf life of fresh fruits and vegetables. Cool storage of perishables is costly due to higher energy input. So, to reduce the operating cost and minimize the postharvest loss, a low‐cost on‐farm storage structure is required, especially in tropical developing nations. In this study, the effectiveness of different cool storage systems...

article

Oxidovanadium(IV/V) complexes bound with a ONS donor backbone: The search for therapeutic versatility in one class of compounds

Manasa Kongot, Riya Chaudhary, Pooja M S, Dinesh Reddy, more

Applied Organometallic Chemistry > 35 > 4 > n/a - n/a

Among the multifarious approaches to treat health challenges such as microbial infections, cancers, and diabetes, metallotherapy is a very significant one. Many transition metal‐based candidates have been previously developed that displayed promising therapeutic interests. Vanadium is one such biologically important transition metal, and in the present work, we have developed potent bioactive vanadium...

article

Collocation method for solving nonlinear fractional optimal control problems by using Hermite scaling function with error estimates

Nitin Kumar, Mani Mehra

Optimal Control Applications and Methods > 42 > 2 > 417 - 444

This article presents an efficient numerical method for solving fractional optimal control problems (FOCPs) by utilizing the Hermite scaling function operational matrix of fractional‐order integration. The proposed technique is applied to transform the state and control variables into nonlinear programming (NLP) parameters at collocation points. The NLP solver is then used to solve FOCP. Furthermore,...

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INFONA - science communication portal

Search results for: Nitin Kumar

Lockdown as an Empirical Strategy to Curb Air Pollution: Evidence from a Quasi‐Natural Experiment

Understanding the helical stability of charged peptides

Frequency regulation for microgrid using genetic algorithm and particle swarm optimization tuned STATCOM

Cold plasma in food processing and preservation: A review

A susceptibility putative haplotype within NLRP3 inflammasome gene influences ischaemic stroke risk in the population of Punjab, India

Physical mechanical, tribological, and thermal properties of new developed composites with Grewia optiva fiber and pan material

Evaluation of food packaging paper for microbial load and storage effect on the microbial activity of paper

Mass modeling of strawberry (Fragaria × Ananasa) based on selected physical attributes

Myeloid‐Specific PTP1B Deficiency Attenuates Inflammation‐Induced and Ovariectomy‐Induced Bone Loss in Mice by Inhibiting Osteoclastogenesis

A novel Pinus roxburghii natural leaves fiber used as reinforcement polymer composite: As asbestos‐free brake friction material

A novel Himachal’s Bagar (Sabai) grass fiber used as a brake friction material in brake polymer composite and compared to standard brake friction material

Advances in development of biodegradable food packaging material from agricultural and agro‐industry waste

Ultrasound and microwave‐assisted solvent extraction of mango kernel oil and evaluation of physicochemical properties and fatty acid profile

Ultrasonic induced effect on mass transfer characteristics during osmotic dehydration of aonla (Phyllanthus emblica L.) slices: A mathematical modeling approach

Absence of right bundle branch block morphology in V1 during left bundle branch pacing. What is the mechanism?

A study of moisture dependent changes in engineering properties and debranning characteristics of purple wheat

Effect of fluidized‐bed and freeze‐drying techniques on physicochemical, nutritional, thermal, and structural properties of Moringa oleifera flowers, leaves, and seeds

Quality retention and shelf‐life prolongation of cucumbers (Cucumis sativus L.) under different cool storage systems with passive modified atmosphere bulk packaging

Oxidovanadium(IV/V) complexes bound with a ONS donor backbone: The search for therapeutic versatility in one class of compounds

Collocation method for solving nonlinear fractional optimal control problems by using Hermite scaling function with error estimates

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