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Lalit MOHAN,Preeti SHARMA,C. N. SRIVASTAVA 한국곤충학회 2006 Entomological Research Vol.36 No.4
Cypermethrin and crude extracts of Solanum xanthocarpum were both observed fortheir larvicidal activity against Culex quinquefasciatus. Petroleum ether extract with lethal concentration (LC)50 and LC90 of 41.28 and 111.16 p.p.m. after 24 h and LC50 38.48 and LC90 80.83 p.p.m. after 48 h, respectively, was found to be the most effective, followed by carbon tetrachloride and methanol extracts. LC50 and LC90 for cypermethrin were 0.0027 and 0.0097 p.p.m. after 24 h and 0.0013 and 0.0092 p.p.m. after 48 h of exposure, respectively. Combined formulations were evaluated for synergistic activity and a 1:1 ratio of cypermethrin and petroleum ether extract was observed to be more effective than 1:2 and 1:4 ratios. Combinations of S. xanthocarpum extracts and cypermethrin demonstrated higher larvicidal activity, indicating synergistic activity. These results demonstrate the need for further studies on the effectiveness and toxicity to humans and animals, particularly aquatic forms.
( Lalit Mohan Kandpal ),( Byoung Kwan Cho ) 한국농업기계학회 2014 바이오시스템공학 Vol.39 No.3
Recently, spectroscopy has emerged as a potential tool for quality evaluation of numerous food and agricultural products because it provides information regarding both spectral distribution and image features of the sample (i.e., hyperspectral imaging). Spectroscopic techniques reveal hidden information regarding the sample and do so in a non-destructive manner. This review describes the various approaches of spectroscopic modalities, especially hyperspectroscopy and vibrational spectroscopies (i.e., Raman spectroscopy and Fourier transform near infrared spectroscopy) combined with chemometrics for the non-destructive assessment of contaminations and defects in agro-food products.
Hyperspectral imaging technique for detection of API contents in pharmaceutical powder blends
( Lalit Mohan Kandpal ),( Anisur Rahman ),( Santosh Lohumi ),( Byoung-kwan Cho ) 한국농업기계학회 2016 한국농업기계학회 학술발표논문집 Vol.21 No.2
Currently, many offline technology (e.g., HPLC) is used in quality testing of pharmaceutical medications. However, such technique used for active pharmaceutical ingredient (API) monitoring are time consuming, and often destructive. Hence, more rapid and accurate techniques are needed for real-time testing and validation of the final product. In this study, the hyperspectral image monitoring technique was used to characterize the API of powder blend samples. The powder blends were prepared using a V-blender device to mix the API formulation excipients. The reflectance spectra of powder samples were obtained using a HSI system at a wavelength range from 400-2500 nm (visible near infrared and shortwave infrared HSI). A partial least square regression (PLSR) model was developed for the prediction of the API concentration. The overall model performed a strong coefficient of determination (R²p) of 0.99 along with a lowest error (RMSEP) of 0.85mg, for API prediction. Furthermore, concentration-mapped images not only provided the spatial distribution of the predicted API concentration into the powder surface but were also useful to ensure the specific API concentration was added in the final dosage from. The binary images of PLSR model detects all the pixels that are corresponding to the API component. Based on this observation, we concluded the PLSR model developed with HSI could be used to easily predict and visualize the API distribution in powder samples.
A Research Paper on Cell Phone Technology
Lalit Mohan Joshi 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.10
This paper describes the different types of networks and standards used by cell phones. Here I discuss the evolution of cell network generations and the technical aspects attributed to each. On cell phone and mobile technology a brief background use in public, private and government health is reviewed. Main focus of this paper is how to use and introduction of different mobile networks. This paper is a research about the wireless network generation and technologies associated with each as well as standards of different cellular network. It is found that the necessary precautions equipment and related actions required to properly and safely seizing different phone equipment. It demonstrates the proper use the important safety equipment that assists investigators to safely and clearly seize mobile phone equipment. This paper also discuss the different imaging methodologies that exist using the latest cell phone forensic software and the pros and cons to each one as well as performs hands-on imaging scenarios utilizing several different tools.
( Lalit Mohan Kandpal ),( Eunsoo Park ),( Jagdish Tewari ),( Byoung Kwan Cho ) 한국농업기계학회 2015 바이오시스템공학 Vol.40 No.4
Spectroscopy is an emerging technology for the quality assessment of pharmaceutical samples, from tablet manufacturing to final quality assurance. The traditional methods for the quality management of pharmaceutical tablets are time consuming and destructive, while spectroscopic techniques allow rapid analysis in a non-destructive manner. The advantage of spectroscopy is that it collects both spatial and spectral information (called hyperspectral imaging), which is useful for the chemical imaging of pharmaceutical samples. These chemical images provide both qualitative and quantitative information on tablet samples. In the pharmaceutics, spectroscopic techniques are used for a variety of applications, such as analysis of the homogeneity of powder samples as well as determination of particle size, product composition, and the concentration, uniformity, and distribution of the active pharmaceutical ingredient in solid tablets. This review paper presents an introduction to the applications of various spectroscopic techniques such as hyperspectroscopy and vibrational spectroscopies (Raman spectroscopy, FT-NIR, and IR spectroscopy) for the quality and safety assessment of pharmaceutical solid dosage forms. In addition, various chemometric techniques that are highly essential for analyzing the spectroscopic data of pharmaceutical samples are also reviewed.
Lalit Mohan,Preeti Sharma,Shrankhla,Chand Narayan SRIVASTAVA 한국곤충학회 2013 Entomological Research Vol.43 No.4
The relative toxicity of different concentrations of temephos and fenthion with petroleum ether root extract of Solanum xanthocarpum (Schrader) at 1 : 1, 1 : 2 and 1 : 4 ratios was evaluated against Anopheles stephensi (Liston) larvae. All combinations exhibited antagonism at concentrations lower than LC50 values and synergism at concentrations higher than their LC90 values. A 1 : 1 product ratio was the most effective.
Developmnet of Low-cost Multispectral Imaging Technqiue for Quality Monitoring of Meat
( Lalit Mohan Kandpal ),( Jihoon Bae ),( Jayoung Lee ),( Byoung-kwan Cho ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
Determination of raw meat quality attributes has always been essential for the food industry because the consumers always prefer superior quality meat. Therefore, food industry require developing rapid and non-destructive method for meat quality determination. During the past few years, a number of techniques have been reported for monitoring the raw meat quality attributes. However, most of the previous techniques are quite expensive, destructive, and require complex hardware to operate. Thus in this work, we demonstrate the ability of low-cost sensing technique (ridding of expensive equipment and complicated design) for meat chemical quality detection. The newly developed system was integrated with a low-cost monochrome camera (CMOS sensor), ordinary LED’s of 15 different wavebands, and display unit. The monochrome camera captures the images of meat sample across a spectral range from 458 to 950 nm by single snapshot method. In addition, the chemical values (e.g. moisture, fat, protein) were determined using traditional destructive methods. The collected images were combined together to produce a multispectral data cube for the extraction of spectral data. Partial least squares (PLS) modeling was developed among the extracted spectra and chemical values, which achieved a good performance for chemical components prediction (R^2>0.80). Furthermore, the current model based on the monochrome sensor with 15 wavebands provided comparable results with hyperspectral sensor using 128 wavebands. Therefore, it can be concluded that the CMOS based multispectral sensing technique has a potential for detection of meat quality, thus facilitating a simple, fast and cost-effective method for quality analysis.