Search results for: Ritu Raj

Items from 1 to 20 out of 39 results

article

A natural small molecule‐mediated inhibition of alpha‐synuclein aggregation leads to neuroprotection in Caenorhabditis elegans

Tulika Srivastava, Divya Tyagi, Siraj Fatima, Malur Thirumalesh Vishnu Sathyan, more

Journal of Neurochemistry > 168 > 8 > 1640 - 1654

Small molecules are being explored intensively for their applications as therapeutic molecules in the management of metabolic and neurological disorders. The natural small molecules can inhibit protein aggregation and underlying cellular pathogenesis of neurodegenerative diseases involving multi‐factorial mechanisms of action. Certain natural small molecular inhibitors of pathogenic protein aggregation...

article

Well‐defined Bis(imino)pyridine‐Manganese(II) Complexes for Oxidation of Benzylic C−H Bonds

Jyotirmoy Dey, Ritu Raj Lakshkar, Deepika Sahil, Om Prakash Joshi, more

Zeitschrift für anorganische und allgemeine Chemie > 650 > 7 > n/a - n/a

Two new manganese(II) complexes bearing bis(imino)pyridine pincer ligands have been synthesized. These manganese(II) complexes were characterized by UV, IR, elemental analysis studies, and X‐ray crystallography. The X‐ray crystal data of manganese complexes revealed distorted trigonalbipyramidal geometries around the manganese ion and neutral tridentate N^N^N coordination mode for bis(imino)pyridine...

article

Mechanical characteristics of high strength concrete incorporating recycled CFRP fibers

Nitin Lamba, Ritu Raj, Poonam Singh

Journal of Applied Polymer Science > 139 > 47 > n/a - n/a

The current research article assesses the feasibility of recycled CFRP (Carbon‐Fiber‐ Reinforced‐Polymer) fibers in high‐strength concrete. Different dosages of recycled CFRP fibers (0.2%, 0.4%, 0.6%, 0.8%, and 1%) as well as different aspect ratios of CFRP fibers with 10 and 20 mm fiber lengths is assessed for hardened state characteristics of reinforced high‐strength concrete. Furthermore, ultrasonic...

article

Parotid pilomatrixoma: Diagnostic trap and management dilemma

Abhishek Bhardwaj, Sumeet Angral, Sharath Chandra, Manu Malhotra, more

European Journal of Clinical and Experimental Medicine > 2020 > 1 > 54-58

Introduction. Pilomatrixoma is a benign cutaneous adnexal neoplasm originating from the matrix cells of the hair follicles. Usually a slow growing and painless lesion, it must be considered in differential diagnosis of a preauricular swelling. Rapidly progressive lesion with skin fixity and missed subtle cytological features may lead to a misdiagnosis of parotid neoplasm resulting in management dilemma...

article

Parametric optimization of fiber to waveguide coupler using Bragg gratings

Rukmani Singh, Ritu Raj Singh, Vishnu Priye

Optical and Quantum Electronics > 2019 > 51 > 8 > 1-10

The uniform grating coupler which consists of two pairs of reflector layers in the substrate region has been proposed to couple the optical power from single mode fiber to standard 220 nm silicon-on-insulator waveguide. The efficiency of ≈ 79% in a broadband 3 dB bandwidth of ≈ 150 nm is achieved for uniform Bragg grating coupler devices. Further, by making a sequence of chirped and uniform grating,...

article

Synthetic post-translational modification of histones

Simon Nadal, Ritu Raj, Shabaz Mohammed, Benjamin G Davis

Current Opinion in Chemical Biology > 2018 > 45 > C > 35-47

Chromatin is the physiological template of genetic information in all eukaryotic cells, a highly organised complex of DNA and histone proteins central in regulating gene expression and genome organisation. A multitude of histone post-translational modifications (PTMs) have been discovered, providing a glance into the complex interplay of these epigenetic marks in cellular processes. In the last decade,...

article

Population growth, urbanization and electricity - Challenges and initiatives in the state of Punjab, India

Ritu Raj Kaur, Ashwani Luthra

Energy Strategy Reviews > 2018 > 21 > C > 50-61

Punjab is an economically advanced and energy-intensive state of India. However, the state power sector is facing challenges to align energy supply and demand due to steep rise in electricity consumption. Fossil fuel constraints and mandate to reduce greenhouse gas emissions are some of the major challenges to meet growing electricity demand. Accelerated generation of renewable power is the need of...

article

Estimation of bedrock depth for a part of Garhwal Himalayas using two different geophysical techniques

Ritu Raj Nath, Gautam Kumar, M. L. Sharma, S. C. Gupta

Geoscience Letters > 2018 > 5 > 1 > 1-9

It has now been well established that the depth of bedrock is a key parameter in assessing the impact of local site conditions on seismic hazard analysis. Where conventional geotechnical testing like standard penetration test (SPT) or cone penetration test (CPT) requires a far greater cost and manpower to be used for such purposes, geophysical testing like ground-penetrating radar (GPR) and multichannel...

article

Functionalization of Extracellular Polymers of Pseudomonas aeruginosa N6P6 for Synthesis of CdS Nanoparticles and Cadmium Bioadsorption

Jaya Chakraborty, Sagarika Mallick, Ritu Raj, Surajit Das

Journal of Polymers and the Environment > 2018 > 26 > 7 > 3097-3108

Functionalization of the extracellular polymers (EPS) of a marine bacterium Pseudomonas aeruginosa N6P6 was carried out for cadmium (Cd) bioadsorption from an aqueous solution which led to the synthesis of cadmium sulfide (CdS) nanoparticles (NPs). Characterization of pristine, functionalized and Cd-treated functionalized EPS was accomplished by ATR-FTIR spectroscopy which illustrated Cd binding with...

chapter

Analytical structure of a general Takagi-Sugeno fuzzy PID controller

Ritu Raj, B. M. Mohan

TENCON 2017 - 2017 IEEE Region 10 Conference > 591 - 596

TENCON 2017 - 2017 IEEE Region 10 Conference

Analytical structure of a Takagi-Sugeno (TS) fuzzy PID controller is proposed in this paper. An attempt is made to generalize the input-output structure of the TS fuzzy PID controller. At least three or more fuzzy sets with trapezoidal/triangular membership functions are employed for each input variable. The rule base is made compact by considering the minimum number of rules (i.e four), so that the...

article

Impact of adjuvant systemic chemotherapy on wound healing and cosmetic outcome in 224 women treated with accelerated partial breast irradiation using interstitial brachytherapy

Ashwini Budrukkar, Prakash Pandit, Tabassum Wadasadawala, Ritu Raj Upreti, more

Brachytherapy > 2017 > 16 > 5 > 935-942

To evaluate the impact of timing of adjuvant chemotherapy on wound healing and cosmetic outcome in women treated with accelerated partial breast irradiation (APBI).Between August 2000 to December 2011, 224 women were treated with APBI using multicatheter interstitial high-dose-rate brachytherapy. Patients were treated to a dose of 34 Gy/10#/5–7 days with bid regimen. Systemic chemotherapy was administered...

article

Change of target volume and its dosimetric impact during the course of accelerated partial breast irradiation using intraoperative multicatheter interstitial brachytherapy after open cavity surgery

Ritu Raj Upreti, Ashwini Budrukkar, Udita Upreti, Shagun Misra, more

Brachytherapy > 2017 > 16 > 5 > 1028-1034

To investigate the change of clinical target volume (CTV) and its dosimetric impact during the course of accelerated partial breast irradiation (APBI) using intraoperative multicatheter interstitial brachytherapy after open cavity surgery.Twenty-two patients of APBI with intraoperative placement of catheters underwent computed tomography scans for the treatment planning before the first (CT1) and...

article

Modeling and analysis of the simplest fuzzy PID controller of Takagi–Sugeno type with modified rule base

Ritu Raj, B. M. Mohan

Soft Computing > 2018 > 22 > 15 > 5147-5161

This paper deals with the simplest fuzzy PID controllers of the Takagi–Sugeno (TS) type. The term simplest is coined since minimal (two) number of fuzzy sets is used for fuzzification in these controllers. The mathematical models of these controllers are found using a modified rule base. The rule base consists of two rules which reduce the number of tuning parameters. Two classes of the simplest fuzzy...

article

Development and application of anticancer fluorescent CdS nanoparticles enriched Lactobacillus bacteria as therapeutic microbots for human breast carcinoma

Ritu Raj, Surajit Das

Applied Microbiology and Biotechnology > 2017 > 101 > 13 > 5439-5451

Applications of probiotic bacteria and nanoparticles (NPs) as therapeutic agents have great importance. This study demonstrates a combinatorial approach of both the probiotic Lactobacillus spp. (Lactobacillus fermentum and Lactobacillus plantarum) with fluorescent cadmium sulfide (CdS) NPs as therapeutic agents to target MCF-7 cancer cells (human breast cancer cells). In this study, facultative anaerobic...

article

Parametric Analysis of Silicon Nanowire Optical Rectangular Waveguide Sensor

Ritu Raj Singh, Nishit Malviya, Vishnu Priye

IEEE Photonics Technology Letters > 2016 > 28 > 24 > 2889 - 2892

A silicon nanowire optical rectangular waveguide (SNORW) on 220-nm silicon-on-insulator platform is proposed for optical sensing of gases. Analysis and interdependence of critical parameters of SNORW are evaluated. Overall performance in terms of power confinement, waveguide sensitivity, and compactness is compared with that of conventional slot and ridge slot waveguides. Exploratory results on SNORW...

article

Optical sensing and monitoring architecture for pipelines using optical heterodyning and FBG filter

Abhinav Gautam, Amitesh Kumar, Ritu Raj Singh, Vishnu Priye

Optik - International Journal for Light and Electron Optics > 2016 > 127 > 20 > 9161-9166

A novel model for pipeline optical sensor and monitoring unit is been proposed through this paper, which consist of fiber Bragg grating array functioning as sensor unit and base station consist of monitoring and transmission unit. Monitoring unit smartly converts optical signal to electrical signal through optical heterodyning and detects the variation of reflected central frequency of each FBG through...

chapter

Modelling and analysis of a general Takagi-Sugeno fuzzy PI/PD controller with modified rule base

Ritu Raj, B. M. Mohan

2016 IEEE Students’ Technology Symposium (TechSym) > 169 - 174

2016 IEEE Students’ Technology Symposium (TechSym)

This paper deals with a general Takagi-Sugeno (TS) fuzzy PI/PD controller with a modified rule base. The analytical structure and properties of the fuzzy PI/PD controller are investigated. The rule base contains three rules which reduce the tuning parameters of the controller. The input variables are fuzzified by at least three triangular or trapezoidal fuzzy sets. The fuzzy PI/PD controller uses...

chapter

A nonlinear fuzzy PID controller via algebraic product AND-maximum OR-Height defuzzification

N K Arun, B M Mohan, Ritu Raj

2016 IEEE Students’ Technology Symposium (TechSym) > 67 - 72

2016 IEEE Students’ Technology Symposium (TechSym)

This paper reveals a new mathematical model of the simplest fuzzy PID controller which employs two fuzzy sets (negative and positive) on each of the three input variables (error, change in error and double change in error) and four fuzzy sets (−2, −1, +1, +2) on the output variable (incremental control). L — type, Γ — type and Π — type membership functions are considered in fuzzification process of...

article

Inter observer variation in delineating lumpectomy cavity and CTV for patients undergoing APBI using intra-operative implants and its impact on implant dosimetry

Ritu Raj Upreti, Ashwini Budrukkar, Tabassum Wadasadawala, Shagun Mishra, more

Physica Medica > 2016 > 32 > S3 > 264

3D conformal brachytherapy utilized limited source positions in catheters and thus may impact dosimetry for inter observer variation in target delineation.To investigate the inter observer variations in lumpectomy cavity (LC) and clinical target volume (CTV) delineation and their dosimetric impact.Delineation of LC and CTV was done by five radiation oncologists on 20 patients of interstitial breast...

article

Synthetic Nucleosomes Reveal that GlcNAcylation Modulates Direct Interaction with the FACT Complex

Ritu Raj, Lukas Lercher, Shabaz Mohammed, Benjamin G. Davis

Angewandte Chemie > 128 > 31 > 9064 - 9068

Transcriptional regulation can be established by various post‐translational modifications (PTMs) on histone proteins in the nucleosome and by nucleobase modifications on chromosomal DNA. Functional consequences of histone O‐GlcNAcylation (O‐GlcNAc=O‐linked β‐N‐acetylglucosamine) are largely unexplored. Herein, we generate homogeneously GlcNAcylated histones and nucleosomes by chemical post‐translational...

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INFONA - science communication portal

Search results for: Ritu Raj

A natural small molecule‐mediated inhibition of alpha‐synuclein aggregation leads to neuroprotection in Caenorhabditis elegans

Well‐defined Bis(imino)pyridine‐Manganese(II) Complexes for Oxidation of Benzylic C−H Bonds

Mechanical characteristics of high strength concrete incorporating recycled CFRP fibers

Parotid pilomatrixoma: Diagnostic trap and management dilemma

Parametric optimization of fiber to waveguide coupler using Bragg gratings

Synthetic post-translational modification of histones

Population growth, urbanization and electricity - Challenges and initiatives in the state of Punjab, India

Estimation of bedrock depth for a part of Garhwal Himalayas using two different geophysical techniques

Functionalization of Extracellular Polymers of Pseudomonas aeruginosa N6P6 for Synthesis of CdS Nanoparticles and Cadmium Bioadsorption

Analytical structure of a general Takagi-Sugeno fuzzy PID controller

Impact of adjuvant systemic chemotherapy on wound healing and cosmetic outcome in 224 women treated with accelerated partial breast irradiation using interstitial brachytherapy

Change of target volume and its dosimetric impact during the course of accelerated partial breast irradiation using intraoperative multicatheter interstitial brachytherapy after open cavity surgery

Modeling and analysis of the simplest fuzzy PID controller of Takagi–Sugeno type with modified rule base

Development and application of anticancer fluorescent CdS nanoparticles enriched Lactobacillus bacteria as therapeutic microbots for human breast carcinoma

Parametric Analysis of Silicon Nanowire Optical Rectangular Waveguide Sensor

Optical sensing and monitoring architecture for pipelines using optical heterodyning and FBG filter

Modelling and analysis of a general Takagi-Sugeno fuzzy PI/PD controller with modified rule base

A nonlinear fuzzy PID controller via algebraic product AND-maximum OR-Height defuzzification

Inter observer variation in delineating lumpectomy cavity and CTV for patients undergoing APBI using intra-operative implants and its impact on implant dosimetry

Synthetic Nucleosomes Reveal that GlcNAcylation Modulates Direct Interaction with the FACT Complex

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