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- This community brings together the scholarly publications of various departments at Banaras Hindu University (BHU), offering a platform to explore and access the academic and research contributions from each department.
- This community showcases the Project reports submitted by researchers at Banaras Hindu University (BHU), offering a subject-wise compilation of research projects and their outcomes across various disciplines.
- This community showcases the academic contributions of faculty and researchers at Banaras Hindu University (BHU) and provides a year-wise compilation of publications across disciplines.
- This community offers a curated collection of theses submitted by students and researchers at Banaras Hindu University (BHU). It provides department-wise access to a wide range of Doctoral/Ph.D. theses, showcasing in-depth research across diverse academic disciplines.
Recent Submissions
A new solid-state pH sensor and its application in the construction of all solid-state urea biosensor
(Wiley-VCH Verlag, 2000) Pandey, P.C.; Upadhyay, S.; Singh, G.; Prakash, R.; Srivastava, R.C.; Seth, P.K.
A new solid-state pH sensor is developed using neutral poly(3-cyclohexyl thiophene) assembled over a Pt disk electrode. The new sensor is developed following two different approaches; 1) the neutral poly(3-cyclohexyl-thiophene) dissolved in chloroform and subsequent coating on to a Pt disk electrode; 2) the neutral polymer is incorporated into plasticized poly(vinyl chloride) matrix membrane. In both cases the polymer modified electrode is sensitive to pH and a reversible super Nernstian behavior is observed. The typical response of the pH sensor and its reversibility are reported. The polymer coated electrode is subsequently used to construct an all solid-state urea sensor. The construction of this new urea sensor involves the following two major steps; a) 20 ?L of urease solution (40 mg/mL) is allowed to assemble overnight at 4 �C over neutral poly (3-cyclohexyl thiophene) modified electrode; b) an organically modified sol-gel layer is allowed to form over the urease adsorbed polymer modified electrode. The new solid-state urea sensor provides excellent reproducibility of the measurements and is stable for 3 months when stored at 4 �C under dry condition. The typical response of the solid-state urea sensor and the calibration plot of urea analysis are reported.
Lysozyme levels for the diagnosis of tuberculous effusions in children
(Oxford University Press, 2000) Mishra, O.P.; Yusuf, S.; Ali, Z.; Nath, G.
Lysozyme level was measured in the fluid and serum of 42 tuberculous (25 pleural, 11 ascites and 6 pericardial) and 29 non-tuberculous (5 malignant, 9 empyema thoracis, 10 transudative ascites and 5 pyopericardium) effusions. The mean fluid lysozyme level was significantly raised in tuberculous pleural, ascites, and pericardial effusions in comparison to malignant pleural (p< 0.001), transudative ascites (p < 0.001), and pyopericardium (p < 0.02) cases, respectively. The mean fluid/serum lysozyme ratio did not differ significantly between tuberculous and their corresponding non-tuberculous effusions. The confirmed tuberculous pleural effusion patients had significantly higher mean fluid lysozyme level and fluid/serum lysozyme ratio when compared with clinical cases (p < 0.05). The cut-off fluid lysozyme level of �50/UI-1 and fluid/serum lysozyme ratio of �1.1 were considered for the diagnosis of tuberculous effusions; the sensitivity and specificity of fluid lysozyme and fluid/serum lysozyme ratios were 100, 100 per cent, and 97.6, 33.3 per cent, respectively, on excluding the patients with purulent effusions. A significant correlation was observed between the fluid and serum lysozyme levels in tuberculous effusions (r = 0.39, p < 0.01). Thus, fluid lysozyme was found to be a better and reliable test than fluid/serum lysozyme ratio for the diagnosis of tuberculous effusions in children.
Floral biology of bael (Aegle marmelos) cultivars
(2000) Srivastava, K.K.; Singh, H.K.
[No abstract available]
Studies on a new proton conducting polymer system: poly(ethylene succinate) + NH4ClO4
(Elsevier Science Ltd, 2000) Srivastava, Neelam; Chandra, Suresh
Poly(ethylene succinate) complexed with different amounts of NH4ClO4 is investigated as a possible proton conducting polymer. DTA, XRD, IR and complex impedance spectroscopy techniques have been used for the structural and ion transport studies. The conductivity as a function of composition, temperature and relative humidity are reported. The paper also reports the effect of addition of a plasticiser poly(ethylene glycol) (PEG) of different molecular weights on the conductivity. Higher conductivity is obtained for materials in which the added plasticiser PEG has a lower molecular weight.
Proliferative activity of follicles and serum steroid concentration in Scotophilus heathi (vespertilionid bat) during periods of delayed ovulation
(National Research Council of Canada, 2000) Krishna, A.; Abhilasha, S.
Follicular kinetics were studied using immunocytochemical localization of proliferating cell nuclear antigen (PCNA) and changes in circulating steroid concentrations to investigate the cause of prolonged survival of Graafian follicles and delayed ovulation in the vespertilionid bat Scotophilus heathi. PCNA immunoreactivity was limited to the granulosa cells and varied with stage of follicular development and reproductive phase. Two waves of follicular growth appear to be initiated in October and February. The first wave resulted in the appearance of some late antral follicles in November. These antral follicles grew slowly and differed from typical mammalian Graafian follicles, as the cells of their cumulus oophoricus were large and hypertrophied. The second wave of follicular development resulted in fresh recruitment and selection of dominant follicles in February. The steroid-hormone profile showed an unusually high concentration of circulating androstenedione from October to December. The estradiol concentration showed two peaks coinciding with two peaks of PCNA immunoreactivity. The results show that the unusually high androstenedione concentration might be responsible for the development of non-ovulatory Graafian follicles with hypertrophied granulosa cells, which survive for a prolonged period. The decline in androstenedione concentration allows the development of ovulatory follicles in S. heathi.