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Prithviraj Chakraborty,Versha Parcha,Debarupa D. Chakraborty,Indranil Chanda,Amitava Ghosh 한국약제학회 2013 Journal of Pharmaceutical Investigation Vol.43 No.2
The purpose of this study was to develop pharmaceutically active buccoadhesive wafer formulations containing Loratadine and mathematically optimize the influence of bioadhesive polymer Sod. CMC and Lactose monohydrate as an ingredient of wafer base matrix, on the physicochemical and drug release performance from the prepared wafers. The wafers, which were prepared by the solvent casting method, were smooth and elegant in appearance; uniform in thickness, weight and drug content;showed no visible cracks; and demonstrated good folding endurance. A 32 factorial design was employed to study the effect of independent variables like Sod.CMC and Lactose monohydrate, which significantly influenced characteristics like buccoadhesion, swelling index, disintegration time and t70 % of the prepared wafers. The drug-excipients interaction studies performed by ATR-FTIR, DSC and XRD revealed drug polymer compatibility within the wafer formulation. Surface morphology of the prepared wafers were studied by using SEM. Drug release study in the buccal environment showed the efficacy of the wafers to release drug within a very short span of time. Thus a conclusion might be brought forward that the present buccal wafer formulation could be an ideal system improving the bioavailability of the drug by avoiding hepatic first pass metabolism and would be an ideal alternative for the patients suffering with dysphagia.
Jui Chakraborty,Swapankumar Ghosh,Somoshree Sengupta,Sudip Dasgupta,Manjusha Chakraborty,Sudipta Mallik,Kamal Lal Das,Debabrata Basu 한국공업화학회 2012 Journal of Industrial and Engineering Chemistry Vol.18 No.6
The presence of trace level (<1 ppm) carbonate ion in the interlayer space of MgAl-LDH has been estimated by ion chromatography technique using a novel inverse chemical suppression method using 0.5 mM H2SO4 as mobile phase and 25 mM LiCl as regenerating solution. The presence of carbonate ion in the LDH structure was found to affect the anion exchange capacity of MgAl-LDH. This has been illustrated by carrying out anion exchange of nitrate ion in the MgAl-LDH structure with chloride ion. The importance of this simple but accurate technique for the carbonate ion estimation is demonstrated and reported in this communication.
Some pharmacological findings of non therapeutic importance of an Ayurvedic preparation Chandanasav
Chakraborty, Sharmila,Rajia, Sultana,Choudhuri, M. Shahabuddin Kabir,Hossain, M. Faruk,Sattar, Mafruhi,Shrestha, Tripti Kyung Hee Oriental Medicine Research Center 2006 Oriental pharmacy and experimental medicine Vol.6 No.2
Chandanasav is an Ayurvedic preparation slightly reduced the gastrointestinal motility at the 15 min time interval. It increased the latent period of castor oil induced diarrhoea, slightly decreased number of stool count and lowered the purging index values. Chandanasav significantly reduced the onset and increased the duration of pentobarbital induced sleeping time. No significant analgesic effect was observed from the hot plate study Thus it may have mild constipating and central nervous system depressant activity without any effect on peripheral nervous system.
Chakraborty SRILEKHA 이화여자대학교 아시아여성학센터 2018 이화여자대학교 아시아여성학센터 학술대회자료집 Vol.2018 No.1
This article discusses the negligence given to the issues on gender and sexuality while talking about tribes in India and the one-dimensional approach towards understanding tribal woman. I have attempted to document this gap by using both a sociological perspective and also a perspective of literature to argue on the discourse behind gender and sexuality while speaking on tribes in India. The article debates that even when academics and literature choose to portray gender and sexuality in tribes, it is portrayed under a dictum of sanctity that reveals what needs to be silenced in the society. This article brings into focus how lived realities of the tribal women get shadowed under the quantitative percentage of mainstream articles. Further, I tried to conclude with my experiences of working with adolescent Santali girls in Jharkhand and also a need to include the narratives of everyday experiences of women and girls while documenting on tribes.
UNIQUE RANGE SETS WITHOUT FUJIMOTO'S HYPOTHESIS
Chakraborty, Bikash Korean Mathematical Society 2022 대한수학회보 Vol.59 No.5
This paper studies the uniqueness of two non-constant meromorphic functions when they share a finite set. Moreover, we will give an existence of unique range sets for meromorphic functions that are the zero sets of some polynomials that do not necessarily satisfy the Fujimoto's hypothesis ([6]).
Biconnectivity, st-numbering and other applications of DFS using O(n) bits
Chakraborty, S.,Raman, V.,Satti, S.R. Academic Press 2017 Journal of Computer and System Sciences Vol.90 No.-
<P>We consider space efficient implementations of some classical applications of DFS including the problem of testing biconnectivity and 2-edge connectivity, finding cut vertices and cut edges, computing chain decomposition and st-numbering of a given undirected graph G on n vertices and m edges. Classical algorithms for them typically use DFS and some Omega(1gn) bits(1) of information at each vertex. Building on a recent O (n)-bits implementation of DFS due to Elmasry et al. (STACS 2015) we provide O (n)-bit implementations for all these applications of DFS. Our algorithms take O (m lg(c) n IgIgn) time for some small constant c (where c <= 2). Central to our implementation is a succinct representation of the DFS tree and a space efficient partitioning of the DFS tree into connected subtrees, which maybe of independent interest for designing other space efficient graph algorithms. (C) 2017 Elsevier Inc. All rights reserved.</P>
Chakraborty, Himel,Chabri, Sumit,Bhowmik, Nandagopal The Korean Institute of Electrical and Electronic 2013 Transactions on Electrical and Electronic Material Vol.14 No.6
Nano-size manganese ferrite reinforced conductive polypyrrole composites reveal a core-shell structure by in situ polymerization, in the presence of dodecyl benzene sulfonic acid as the surfactant and dopant, and iron chloride as the oxidant. The structure and magnetic properties of manganese ferrite nano-fillers were measured, by using X-ray diffraction and vibrating sample magnetometer. The morphology, microstructure, and conductivity of the composite were characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, and four-wire technique. The microwave-absorbing properties of composites reinforcement dispersed in resin coating with the coating thickness of 1.2 nm were investigated, by using vector network analyzers, in the frequency range of 8~12 GHz. A reflection loss of -8 dB was observed at 10.5 GHz.
Spirituality bestowing self-transcendence amid COVID-19 through slow fashion
Chakraborty Swagata,Sadachar Amrut 한국마케팅과학회 2023 Journal of Global Fashion Marketing Vol.14 No.3
We proposed and tested a conceptual model exploring how (i) COVID-stress evokes spirituality; (ii) COVID-stress and spirituality engender positive attitude toward the different dimensions of slow fashion (i.e. equity, authenticity, functionality, localism, and exclusivity) as a symbol of self-transcendence and (iii) spirituality mediates the relationships between COVID-stress and the different dimensions of slow fashion. We conducted an online survey in Amazon Mechanical Turk (n = 317) and analyzed the data through structural equation modeling. (i) COVID-stress positively influences spirituality; (ii) both COVID-stress and spirituality positively influ- ence attitude toward slow fashion in terms of equity, authenticity, localism, and exclusivity; (iii) spirituality mediates the relationships between COVID-stress and all the dimensions of slow fashion except for functionality. Due to the fast-changing situations amid the pandemic and the uneven severity of the pandemic globally, a cross-sectional study may have limited the scope for capturing nuances of retail consumer behavior. In summary, we suggest that the consumption of slow fashion apparel as a symbol of self- transcendence may help consumers cope with COVID-stress in the hope of building spiritual ties with a higher power through the process of ethical consumption amid the pandemic.
Chakraborty, Souvik,Tewari, Shikha,Sharma, Rajinder Kumar,Narula, Satish Chander,Ghalaut, Pratap Singh,Ghalaut, Veena Korean Academy of Periodontology 2014 Journal of Periodontal & Implant Science Vol.44 No.2
Purpose: Both chronic periodontitis (CP) and iron deficiency anemia (IDA) induce oxidative stress in the body and cause an imbalance between reactive oxygen species and antioxidants, such as superoxide dismutase (SOD). This study explored the SOD enzyme activity of saliva and serum in CP patients with and without IDA and analyzed the impact of IDA on CP. Methods: A total of 82 patients were divided into four groups: control group (CG, 22), periodontally healthy IDA patients (IDA-PH, 20), CP patients (CP, 20), and IDA patients with CP (IDA-CP, 20). After clinical measurements and samplings, serum and salivary SOD levels were determined using an SOD assay kit. Results: IDA-CP patients exhibited a higher gingival index, bleeding on probing, probing pocket depth, and percentage (%) of sites with a clinical attachment loss (CAL) of ${\geq}6mm$ (P<0.008) than CP patients. The mean salivary and serum SOD levels were significantly lower in the IDA-PH, CP, and IDA-CP patients than in the CG group (P<0.008). A significant positive correlation between salivary and serum SOD activity was observed in IDA (P<0.05). Furthermore, serum and salivary SOD levels were significantly and negatively correlated with all periodontal parameters including the percentage of sites with CAL of 4-5 and ${\geq}6mm$ (P<0.05) except the significant correlation between salivary SOD activity and mean CAL and the percentage of sites with CAL of 4-5 mm (P>0.05) in these patients. Conclusions: Within the limits of this study, it may be suggested that IDA patients with chronic periodontitis have more periodontal breakdowns than patients with chronic periodontitis. Serum and salivary SOD activity levels were lower in the IDA-PH, CP and IDA-CP groups than in the CG. Iron deficiency anemia influenced the serum SOD activity but did not seem to affect the salivary SOD activity in these patients.