Papers by Saurabh CHAUDHARI
Studies on Lipid Peroxidation and Anti Lpo Chemicals
The contents of lipid peroxides (LPO) in sera and tissues were determined by the modified spectro... more The contents of lipid peroxides (LPO) in sera and tissues were determined by the modified spectrophotometry of TEA, and the effects of three chemicals on lipid peroxidation induced by radiation were observed. The items studied included; (1) the normal values of LPO of sera in rats and adults; (2) the normal values in some tissues of rats; (3) the changes of LPO levels of sera in patients with some mental diseases and patients with malignant tumours before and after local gamma irradiation exposure; (4) the changes of LPO contents of some tissues in rats after whole-body gamma irradiation exposure; (5) the changes of LPO contents of some tissues in mice after internal exposure by Th (NO3)4 solution; (6) the effects of chinonin, tannic acid and squalene on lipid peroxidation induced by irradiation. The results were as follows; (1) the LPO contents in patients with some mental diseases dramatically increased; (2) there was marked difference between the LPO levels before and after local gamma irradiation exposure in patients with malignant tumours; (3) the LPO contents in some tissues of rats remarkably increased after whole-body gamma irradiation exposure; (4) the LPO contents in some tissues of mice dramatically increased and their protein contents markedly reduced after internal exposure , showing a negative correlation between them; ( 5 ) a gradual increase in LPO contents in some tissues of mice appeared with increasing dosage of whole-body gamma irradiation exposure at dose range from 0 to 4 Gy. A linear relationship between the dose and the LPO contents was observed; (6) all three chemicals could reduce the LPO levels in liver, spleen and kidney of the irradiated mice. The efficacy of chinonin was better than that of tannic acid and squalene.
Researches on Radioprotective Effects of Dendrobium
Radiation Protection (Taiyuan), 2004
Study of Anti Oxidation and Scavenging Effects on Free Radicals of Quercetin
Acta Academiae Medicinae Suzhou, 1999
Effects of Radiation on Lipid Peroxides and Proteins in Rats and Anti Lpo Effects of Tannic Acid and Squalene
Journal of Radiation Research and Radiation Processing, 1993
Obesity is one of the most widespread diseases of our days .Because of its wild distribution not ... more Obesity is one of the most widespread diseases of our days .Because of its wild distribution not only among adults but also among children, adolescents and young people, the WORLD HEALTH ORGANISATION (WHO) include it in the list of socially and medically significant diseases with serious effects on human health. The factors for its etiology and development are complex, but the most authors identify the unhealthy nutritional habits and lack of regular physical activity as leading ones. The purpose of this study was to reveal the most common causes of weight increase above its normal levels in medical students. Material and methods. The study included 120 students from the Medical Faculty of the Thracian university-Stara Zagora. They carried out an individual anonymous questionnaire, with a total of 21 questionsclosed, open and mixed, which aim was to reveal some of the possible causes leading to excess weight in the contingent studied. Methods used: Research and analysis of information sources, survey sociological method, alternative analysis. Results and discussion. In that report we will analyse the answers to those questions concerning the nutritional habits and behaviour of the respondents. It turns out that among the most common reasons for increasing body weight above the normal range is the presence of a number of unhealthy nutritional habits, such as the intake of high-energy food products of low biological value, the intake of a higher amount of food/overeating/and irregular eating. Conclusion. Based on the research carried out, we can summarize that a large number of the students surveyed demonstrate a good knowledge about the healthy and balanced nutrition, but unfortunately most of them do not follow it because of their dynamic and strenuous daily life, and this in combination with the decreased habitual physical activity will inevitably lead to an increased body weight.
Indian journal of applied research, 2016
Background: The tear film of diabetic patients has been reported to be unstable. Number of tests ... more Background: The tear film of diabetic patients has been reported to be unstable. Number of tests are available for investigation of dry eye but Tear film Break up time is an easier and effective test to diagnose dry eye. Purpose of this study is to measure TBUT in patients with diabetes for early diagnosis of dry eye. Methods: We studied total of 100 patients including 46 non-insulin dependant diabetic patients and 54 normal patients. Basic demographic data regarding age, gender and occupation of the patients were recorded. From the patients’ medical records, the type of diabetes, duration of diabetes, type of medication, blood glucose levels were noted. Tear film breakup time was performed in every patient and readings were noted. Statistical analysis of readings was done. Result: We enrolled 24 female and 76 males in this study, 46 being diabetic and 54 were non-diabetic controls. The mean duration of diabetes was 8.10 ± 3.6 years. The mean for fasting blood glucose was 143.4 ± 27...
Influence of MORA on Isometric Muscle Strength of Upper Appendage during Shoulder Adduction
スポーツ歯学 Journal of Sports Dentistry, Mar 31, 1998
Development of Graphene and Graphene-Nanoparticle Composites for Sensor Applications Saurabh Chau... more Development of Graphene and Graphene-Nanoparticle Composites for Sensor Applications Saurabh Chaudhari The goal of this research was the synthesis of graphene and graphene nanocomposite for use as sensor materials. This dissertation describes the optimization of a novel approach to the synthesis of few layer graphene films on SiC, the modification of the graphene surface by wet chemical methods, the nucleation of nanoparticles to form graphene-nanoparticle composites, the fabrication of chemoresistive sensor structures from these materials, and the characterization of these surfaces and films. In this work, the basic graphene synthesis method which uses halogen based plasma etching and ultra-high vacuum annealing (UHVA), has been optimized to reliably produce one, two, and three layer graphene on SiC films. The process has also been extended by replacing the UHVA step with rapid thermal annealing (RTA) in atmospheric pressure argon. Graphene films produced by both methods have been characterized using x-ray photoelectron spectroscopy (XPS), Raman microscopy, and atomic force microscopy (AFM). The UHVA process produces films with halogen-based and possibly some oxygenbased defects, whereas the RTA processes produces exclusively oxygen-based defects which include epoxide, hydroxyl, and carbonyl groups similar to, but at much lower levels, than that observed for graphene oxide (GO). As in the case for GO, the defect density was further reduced by wet chemical surface modification. Nanoparticles (Ag, Au, Pt, Ir) were attached to these surfaces using solution based methods. The particle diameter and height distributions along with surface coverage were characterized using AFM methods. Key parameters in these studies included solution composition and incubation time. For electrical characterization and sensor testing, two structures were then fabricated using lithography free methods and electron beam evaporation. The first of these structures, referred to as the transmission line method (TLM) structure, was used in the present work for electrical characterization. Using the TLM structure, the electrical properties were characterized using two and four point probe methods. The films exhibited semiconducting behavior which is believed to be due to the opening of a band gap by the halogen-and oxygen-based defects. Using the two and four pint methods, the Schottky barrier height, the carrier density, electrical resistivity, and the carrier mobility were determined. The electrical resistivity was found to have an inverse relationship with number of graphene layers for one, two, and three layer films. The second device structure was a simple interdigitated sensor structure which was passed on to
Analysis of Aqueous Supercapacitor for Variation in Separator Wetness
2018 2nd IEEE International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES), 2018
The supercapacitor is an emerging technology that promises to play an important role in meeting t... more The supercapacitor is an emerging technology that promises to play an important role in meeting the demands of electronic devices and systems, both now and in the future. Supercapacitor has properties which can be integrated with properties of other energy storage technologies in the hybrid electric energy system. Due to behavioral characteristics of supercapacitor like fast charging and discharging ability as well as high power density, a supercapacitor and battery can operate efficiently to avoid charging and discharging of the battery. This helps to achieve longer battery life and enable higher system peak power performance thus improves the efficiency of the system. In the work carried out, efforts are put to fabricate a cost-effective model/prototype of supercapacitor using steel wire mesh, polyethylene, isopropyl alcohol, potassium sulfate, and manganese dioxide. The results are obtained in the laboratory to find out capacitance of the supercapacitor. To get the best result in terms of capacitance and internal resistance best carbon is selected. Various trials on the concentration of the electrolyte, effect of wetness of the separator on capacitance and internal resistance have been presented in the paper.
Effects of Opuntia humifusa Extract on DNCB-Induced Allergic Contact Dermatitis in BALB/c Mice
Laboratory Animal Research, Jun 1, 2007
This study was performed to assess the effects of Opuntia humifusa (OH) extract using a mouse mod... more This study was performed to assess the effects of Opuntia humifusa (OH) extract using a mouse model of allergic contact dermatitis. Allergic contact dermatitis (ACD) was induced on the ears of BALB/c mice caused by sensitized and repeated application of 2,4-dinitro-1-chlorobenzene (DNCB). Topical treatment of 10% OH solution was applied once a day for 3 days and ear swelling was measured daily. After 3 days of treatment the mice were sacrificed and ear samples were collected for cytokine determination and histological examination. The repeated application of DNCB induced a relatively steep increment of ear thickness. Significant reductions of swelling, erythema and histopathological inflammation in ears were observed after 3 days of treatment with 10% OH. OH significantly suppressed the levels of interleukin-1β (IL-1β), IL-2 and Interferon-? (IFN-?) in the ears and the levels of IgE in serum after DNCB rechallenge. This study demonstrates that OH inhibits DNCB-induced ACD in mice, and suppresses the levels of inflammatory cytokines, such as IL-1β, IL-2 and IFN-? in the ear. Based on these findings, OH may have antiinflammatory and alleviatory effects in the ACD.
Short message service (SMS) is a very popular and one of the easy to use communication technologi... more Short message service (SMS) is a very popular and one of the easy to use communication technologies for mobile phone devices. Originally, this service was not designed to transmit secured data, so the security was not an important issue during its design. Short Message Service is normally used to transport unclassified data, but with the rise of mobile commerce it has become a fundamental tool for conducting business. However SMS does not guarantee confidentiality and integrity of the message. Now a days, short message service (SMS) is being used in many daily life applications, including mobile banking, mobile commerce, and so on. But when we send an SMS from one mobile device to another, the information contained in the SMS transmit as plain text. Sometimes this information may be confidential like account numbers, passwords, license numbers, and so on, and it is a major drawback to send such information through SMS while the traditional SMS service does not provide encryption to ...
Growth and Characterization of Graphene Films Formed by Halogen Based Plasma Etching of 6H-SiC
End to End Transmission of SMS Using Cryptography Technique
Short message service (SMS) is a very popular and one of the easy to use communication technologi... more Short message service (SMS) is a very popular and one of the easy to use communication technologies for mobile phone devices. Originally, this service was not designed to transmit secured data, so the security was not an important issue during its design. Short Message Service is normally used to transport unclassified data, but with the rise of mobile commerce it has become a fundamental tool for conducting business. However SMS does not guarantee confidentiality and integrity of the message. Now a days, short message service (SMS) is being used in many daily life applications, including mobile banking, mobile commerce, and so on. But when we send an SMS from one mobile device to another, the information contained in the SMS transmit as plain text. Sometimes this information may be confidential like account numbers, passwords, license numbers, and so on, and it is a major drawback to send such information through SMS while the traditional SMS service does not provide encryption to ...
Personalization of Intervention Timing for Physical Activity: Scoping Review
JMIR mHealth and uHealth, 2022
Background The use of sensors in smartphones, smartwatches, and wearable devices has facilitated ... more Background The use of sensors in smartphones, smartwatches, and wearable devices has facilitated the personalization of interventions to increase users’ physical activity (PA). Recent research has focused on evaluating the effects of personalized interventions in improving PA among users. However, it is critical to deliver the intervention at an appropriate time to each user to increase the likelihood of adoption of the intervention. Earlier review studies have not focused on the personalization of intervention timing for increasing PA. Objective This review aims to examine studies of information technology–based PA interventions with personalized intervention timing (PIT); identify inputs (eg, user location) used by the system for generating the PIT, the techniques and methods used for generating the PIT, the content of the PA intervention, and delivery mode of the intervention; and identify gaps in existing literature and suggest future research directions. Methods A scoping revie...
An Approach for Implementing a Multidimensional Recommendation System for Online Retail Services or Portals
International Education and Research Journal, 2017
A newly proposed algorithmic approach that can be deployedin the implementation of recommendatio... more A newly proposed algorithmic approach that can be deployedin the implementation of recommendation system which can be used at the clientas well as server end. PID is a closed loop, self-tuning algorithm which ispredominantly implemented in mechatronics instruments where manual supervision is not feasible and it functions for corrections of errors quantifiablein physical measures. In this approach, we propose a similar outlook to analgorithm for implementation of recommendation system. There exist nophysical errors in computer based systems as such but we can abstractlymap this error to irrelevancy. If we were to map errors in physical dimensions to irrelevancy in computer systems it can be approximately stated tobe higher the error, higher the irrelevancy. Also, the availability of multiplefactor assessment in PID algorithms can be used to add multidimensionalapproach in implementation. As proposed and analysed the implementationis expected to provide with faster as well as large ...
Keefektifan Model Pembelajaran Kooperatif Tipe Student Teams Achievement Divisions Terhadap Motivasi Dan Hasil Belajar Siswa Pada Pembelajaran Tematik Integratif Kelas IV SD N 01 Purwoharjo
The particulate matters released out of the industries such as boiler, cement, power generation e... more The particulate matters released out of the industries such as boiler, cement, power generation etc. received attention because of firm environmental protection agency (EPA).
Self-tuning approach for implementing a multidimensional recommendation system using PID
2017 Innovations in Power and Advanced Computing Technologies (i-PACT), 2017
The exponential growth in the online retail services and products has resulted in the generation ... more The exponential growth in the online retail services and products has resulted in the generation of huge amounts of data. In an online retail portal, analysis of the data plays an important role in optimization of recommendation systems, which helps offer better user experience. As large amount of data is consistently updated in the databases of online retail portals, the data quantity keeps on increasing and it becomes more difficult to carry out analysis for the process of recommendation. Recommendation algorithms have been designed to take some input information and generate relevant recommendations. The performance of traditional recommendation systems and analysis techniques degrade while processing large data. New recommender system technologies are needed that can quickly produce high-quality recommendations, even for very large-scale problems. Here is a newly proposed algorithmic multidimensional approach that can be deployed to improve recommendation systems performance. PI...
Evaluation of athletic mouthguard through vibration test on maxillary teeth of human dry skull
Journal of medical and dental sciences, 1998
The athletic mouthguard has been used for the prevention of orofacial injuries in contact sports.... more The athletic mouthguard has been used for the prevention of orofacial injuries in contact sports. In this research, the effectiveness of a mouthguard was evaluated for its protection of the maxillary teeth of a human dry skull through experimental modal analysis. The upper central incisor was excited by an electrodynamic shaker. The frequency response functions of the upper teeth were then recorded on an FFT analyzer in order to identify modal shapes of the maxillary arch with and without a mouthguard. In addition, transient response simulations were carried out and decay rates of transient response waves were compared. As a result, when the mouthguard was in place, the resonance peaks of the frequency response functions were dampened, and the nodes of the modal shapes for the anterior teeth were indefinite in the frequency domain over 1 kHz. In the transient response simulation, the decay rates of transient response waves when the mouthguard was used were significantly higher than ...
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Papers by Saurabh CHAUDHARI