Gupta A.,Bhagwant University |
Chaudhary J.,Tnb College |
Mishra B.,Tilka Manjhi Bhagalpur University
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2014
Researchers in past have studied the characteristics of Bentonite from various places in India. Bentonite of Rajmahal Hills in Jharkhand, however was considered as a low quality Bentonite since many years. The authors of the paper have undertaken extensive study on various bentonites from Rajmahal hills and undertaken analysis of these samples using X-rays, IR, DTA, TGA and TG in order to evaluate the quality of this bentonite. The absorption band of IR spectra when correlated with literature confirms the presence of Montmorillonite as major clay mineral in the Bentonite minerals of Rajmahal hills. The d spacing values of X ray powder data of the same too substantiates the presence of Montmorillonite clay mineral in all the samples along with Kaolinites and Smactites in small proportions. DTA and TGA studies show high temperature endothermic peak between 550 °C and 750 °C resulting from the lattice water indicating the presence of Montmorillonite. Hence it has been found for the first time that these bentonites are high quality bentonite and can been utilized for commercial use.
Gupta A.,Bhagwant University |
Jha A.K.,Gbcollege |
Mishra B.K.,Sabaur College |
Choudhary J.,Tnb College |
Mishra B.,Tilka Manjhi Bhagalpur University
Asian Journal of Chemistry | Year: 2011
Twenty six samples of bentonite of Rajmahal hills (Jharkhand) were studied for their percentage composition of constituents such as SiO2, Al2O3, Fe2O3, TiO2, P2O5, Na2O, MgO, CaO and K2O. These samples were collected from different places and available in different colours from Rajmahal hills. These samples contain high percentage of silica with lower limit of 34.64 % and higher limit of 56.24 % was comparable well with the literature values. Theoretical molecular formula was calculated and presented as (Si aAlb)(AlcFedMge)Ca fNagKhO10(OH)2 where a = 2.57-3.57, b = 0.42-1.43, c = 1.14-1.67, d = 0.10-0.56, e = 0.01-0.53, f = 0.03-0.48, g = 0.12-1.23 and h = 0.03-0.53. The theoretical formula of bentonite minerals of Rajmahal hills are reported for first time in literature.
Mahto D.,Marwari College |
Prasad U.,Tnb College |
Singh B.K.,T.M.B.U. |
Singh K.M.,Marwari College
Astrophysics and Space Science | Year: 2013
The present research paper discusses the derivation for the change in entropy of Non-spinning black holes with respect to the change in the radius of event horizon applying the first law of black hole mechanics, with the relation for the change in entropy δS=8πMδM. When the work is further extended with proper operation, the entropy of black hole is obtained almost the same as the Bekenstein-Hawking entropy of black hole. This is the entirely new method to obtain the change in entropy of Non-spinning black holes w.r.t. the radius of event horizon and Hawking entropy of black hole. We have also calculated their values for different types of test non-spinning black holes having masses 5-20M⊙ found in X-ray binaries (Narayan, gr-qc/0506078v1, 2005, 2005). © 2012 Springer Science+Business Media B.V.
Senthilkumar C.S.,Jawaharlal Nehru Cancer Hospital and Research Center |
Senthilkumar C.S.,Rajiv Gandhi University |
Mohi-ud-Din M.T.,Jawaharlal Nehru Cancer Hospital and Research Center |
Nand Kishore S.,Rajiv Gandhi University |
And 2 more authors.
Asian Pacific Journal of Cancer Prevention | Year: 2011
The purpose of this study was to update both researchers and clinicians about the cancer incidence in methyl isocyanate (MIC) exposed long-term survivors and in their offspring, focusing on the etiological plausibility. In the time period 2006-2011, cancer morbidity was evaluated in the population surviving after exposure to (MIC) on December 3rd, 1984, in Bhopal. This descriptive study is based on hospital registration of 1261 cancer patients those are MIC gas victims and theirsubsequently born offspring. Morbidity status was studied on the basis of gender, age, organ and site with relative percentages. Cancers on specific sites, with special reference to breast (n=231) (18.31%), lung (n=103) (8.16%), tongue (n=103)(8.16%), buccal mucosa (n=94) (7.45%), cervix (n=72) (5.70%), and esophagus (n=68) (5.39%) were found in high proportions. Ovary (n=43) (3.40%), brain (n=42) (3.33%), larynx (n=40) (3.17%), non-Hodgkin's (n=31) (2.45%), gallbladder (n=29) (2.29%), stomach (n=28) (2.22%), head and neck (n=28) (2.22%), liver (n=27) (2.14%), acute lymphoid leukemia (n=24) (1.90%), rectum (n=20) (1.58%), colon (n=20) (1.58%), chronic myeloid leukemia (n=17) (1.34%), alveolus (n=17) (1.34%), Hodgkin's (n=14) (1.11%), uterus (n=14) (1.11%), multiple myeloma (n=14) (1.11%), and prostate (n=11) (0.87%) lesions were observed less frequently. Remarkably, gradual increase of cancers on different organs and sites were observed in the longterm survivors and their offspring. The present study observed some cancers which were not previously reported in this population. In addition, we also present the future research directions with systematic approaches to predict cancer risk in long-term survivors and their future generations. On the basis of this morbidity report, we suggest the need of biological surveillance through immune system biomonitoring and cytogenetic screening to predict the cancer risk in the MIC exposed population and their offspring.
Paul R.,Rajiv Gandhi University |
Prasad M.,CSIR - Central Electrochemical Research Institute |
Sah N.K.,TNB College
Cancer Biology and Therapy | Year: 2011
Neem (Azadirachta indica), a member of the Meliaceae family, is a fast growing tropical evergreen tree with a highly branched and stout, solid stem. Because of its tremendous therapeutic, domestic, agricultural and ethnomedicinal significance, and its proximity with human culture and civilization, neem has been called "the wonder tree" and "nature's drug store." All parts of this tree, particularly the leaves, bark, seed-oil and their purified products are widely used for treatment of cancer. Over 60 different types of biochemicals including terpenoids and steroids have been purified from this plant. Pre-clinical research work done during the last decade has fine-tuned our understanding of the anticancer properties of the crude and purified products from this plant. The anticancer properties of the plant have been studied largely in terms of its preventive, protective, tumor-suppressive, immunomodulatory and apoptotic effects against various types of cancer and their molecular mechanisms. This review aims at scanning scattered literature on "the anticancer biology of A. indica," related toxicity problems and future perspectives. The cogent data on the anticancer biology of products from A. indica deserve multi-institutional clinical trials as early as possible. The prospects of relatively cheaper cancer drugs could then be brighter, particularly for the under-privileged cancer patients of the world. © 2011 Landes Bioscience.
Asique M.C.,TMBU |
Prasad U.,TNB College |
Hassan M.R.,P.A. College |
Suraj M.S.,University of Delhi
Astrophysics and Space Science | Year: 2015
The present paper deals with the restricted four-body problem, when the third primary placed at the triangular libration point of the restricted three-body problem is an oblate body. The third primary m3 is not influencing the motion of the dominating primaries m1 and m2. We have studied the motion of m4, moving under the influence of the three primaries mi, i=1,2,3, but the motion of the primaries is not being influenced by infinitesimal mass m4. The aim of this study is to find the locations of equilibrium points and their stability. We obtain three collinear and five non-collinear equilibrium points. The collinear equilibrium points are unstable for all the mass parameter. The non-collinear points are stable for different mass parameter and oblateness factor. Also, we have considered the autonomous coplanar circular restricted four-body problem with the infinitesimal mass as a low-thrust spacecraft. Artificial equilibrium points are created with the use of continuous low-thrust propulsion. The obtained results show that, in absence of thrust there are unstable equilibrium points close to the third primary. Also, using the constant low-thrust, the artificial equilibrium points can be generated, which move from the natural equilibrium points. Further, it is proved that in certain region closed to the third primary, these points are stable. We have drawn the zero velocity surfaces to determine the possible allowed boundary regions. We observed that for increasing values of oblateness coefficient A, the corresponding possible boundary regions increase where the particle can freely move from one side to another side. Further, for different values of Jacobi constant C, we can find the boundary region where the particle can move in possible allowed partitions. The stability regions of the equilibrium points expanded due to presence of oblateness coefficient and various values of C. © 2015, Springer Science+Business Media Dordrecht.