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Search Results: 1 - 10 of 110 matches for " Fahmida Gulshan "
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Reclamation of Lithium Cobalt Oxide from Waste Lithium Ion Batteries to Be Used as Recycled Active Cathode Materials  [PDF]
Rakibul Qadir, Fahmida Gulshan
Materials Sciences and Applications (MSA) , 2018, DOI: 10.4236/msa.2018.91010
Abstract: Waste laptop batteries (Type-Lithium ion) have been collected and manually dismantled in the current work. Active electrode materials were scraped off from the copper current collector and polyethylene separators. The aluminum current collectors were found to be severely damaged and attached with the electrode material. It was treated with NaOH later to be recovered as Al2O3. The leaching of LiCoO2 was done by 3 M HCl aided by 5% H2O2 at 60°C from the scraped active electrode materials (LiCoO2 and graphite) leaving the graphite completely. Co was precipitated as hydroxide by the addition of NaOH and later converted to Co3O4. The remaining solution was treated with saturated Na2CO3 to acquire Li2CO3 as crystalline precipitate with high purity. The recovery of Co and Li was 99% and 30%, respectively. Co3O4 and Li2CO3were mixed in stoichiometric proportions and calcined around 950°C with air supply to achieve LiCoO2 successfully.
Pattern of Gynaecological Malignancies in a Tertiary Care Hospital  [PDF]
Sayma Afroz, Gulshan Ara, Fahmida Sultana
Open Journal of Obstetrics and Gynecology (OJOG) , 2019, DOI: 10.4236/ojog.2019.94044
Abstract: Background: Gynaecological malignancies are the second most common cancer of females after cancer breast. Gynaecological malignancies contribute significantly to cancer burden and have a higher rate of mortality and morbidity. Carcinoma cervix is the commonest gynaecological malignancy in developing countries while in developed countries, ovarian cancer is the commonest. Comprehensive statistics on gynecologic malignancies reported from Bangladesh are deficient. This study was performed to ascertain the profile of gynecologic cancers reported at our center regarding demography, the frequency
The Use of Multi-Objective Genetic Algorithm Based Approach to Create Ensemble of ANN for Intrusion Detection  [PDF]
Gulshan Kumar, Krishan Kumar
International Journal of Intelligence Science (IJIS) , 2012, DOI: 10.4236/ijis.2012.224016
Abstract: Due to our increased dependence on Internet and growing number of intrusion incidents, building effective intrusion detection systems are essential for protecting Internet resources and yet it is a great challenge. In literature, many researchers utilized Artificial Neural Networks (ANN) in supervised learning based intrusion detection successfully. Here, ANN maps the network traffic into predefined classes i.e. normal or specific attack type based upon training from label dataset. However, for ANN-based IDS, detection rate (DR) and false positive rate (FPR) are still needed to be improved. In this study, we propose an ensemble approach, called MANNE, for ANN-based IDS that evolves ANNs by Multi Objective Genetic algorithm to solve the problem. It helps IDS to achieve high DR, less FPR and in turn high intrusion detection capability. The procedure of MANNE is as follows: firstly, a Pareto front consisting of a set of non-dominated ANN solutions is created using MOGA, which formulates the base classifiers. Subsequently, based upon this pool of non-dominated ANN solutions as base classifiers, another Pareto front consisting of a set of non-dominated ensembles is created which exhibits classification tradeoffs. Finally, prediction aggregation is done to get final ensemble prediction from predictions of base classifiers. Experimental results on the KDD CUP 1999 dataset show that our proposed ensemble approach, MANNE, outperforms ANN trained by Back Propagation and its ensembles using bagging & boosting methods in terms of defined performance metrics. We also compared our approach with other well-known methods such as decision tree and its ensembles using bagging & boosting methods.
Assessment of the Cases Undergone Peripartum Hysterectomy in a Tertiary Care Hospital in the Last Three Years  [PDF]
Afroz Sayma, Gulshan Ara
Open Journal of Obstetrics and Gynecology (OJOG) , 2018, DOI: 10.4236/ojog.2018.811101
Abstract: Background: Emergency peripartum hysterectomy (EPH), although rare in modern obstetrics, remains a life-saving procedure in cases of severe hemorrhage. Objective: To assess the incidence, indications, outcomes & complications of peripartum hysterecomty performed in a tertiary care hospital & compare the results with other reports in the literature. Methods: Twenty nine peripartum hysterectomy cases carried out between July 2015 and June 2018 in Enam Medical College & Hospital, Savar, Dhaka were evaluated retrospectively. Maternal characteristics and characteristics of the present pregnancy and delivery, hysterectomy indications, operative complications, postoperative conditions, and maternal and neonatal outcomes were evaluated. Results
On the Location of Zeros of Polynomials  [PDF]
Gulshan Singh, Wali Mohammad Shah
American Journal of Computational Mathematics (AJCM) , 2011, DOI: 10.4236/ajcm.2011.11001
Abstract: In this paper, we prove some extensions and generalizations of the classical Eneström-Kakeya theorem.
On The Eneström-Kakeya Theorem  [PDF]
Gulshan Singh, Wali Mohammad Shah
Applied Mathematics (AM) , 2010, DOI: 10.4236/am.2010.16073
Abstract: In this paper, we prove some generalizations of results concerning the Eneström-Kakeya theorem. The results obtained considerably improve the bounds by relaxing the hypothesis in some cases.
Screening of Acetic Acid Producing Microorganisms from Decomposed Fruits for Vinegar Production  [PDF]
Farzana Diba, Fahmida Alam, Ali Azam Talukder
Advances in Microbiology (AiM) , 2015, DOI: 10.4236/aim.2015.55028
Abstract: Acetic acid bacteria capable of growing at 30°C - 37°C were collected from various decomposed fruits available in Bangladeshi local markets in order to assess their suitability for vinegar production. Initially, 42 microorganisms were isolated from decomposed fruits like grapes, mangoes, pineapples, oranges, safeda etc. during summer when temperature reaches up to 37°C. Then their growths were checked in YPG medium containing various ethanol concentrations at different time point at 37°C. From the preliminary screening, 15 Gram negative bacterial isolates have produced halos or yellow zone around the colonies on YPG agar plate at 37°C which indicated acetic acid production capability by those bacteria. Furthermore, acetic acid production rates were determined by titration method and about 3 - 6.9 gm/100ml acetic acid were estimated by using 4% ethanol at 37°C by shaking culture for 3 days. Several biochemical analysis revealed that our collection contained huge amount of acetic acid producing bacteria and some of them could be potential candidates for vinegar production.
Pandey Gulshan
International Research Journal of Pharmacy , 2012,
Abstract: Migraine is a chronic neurological disorder with heterogeneous characteristics resulting in a range of symptom profiles, burden, and disability. Migraine affects nearly 12% of the adult population in occidental countries, imposing considerable economic and social losses. The pharmacologic treatment of migraine includes preventive and acute strategies. A better understanding of the migraine pathophysiology along with the discovery of novel molecular targets has lead to a growing number of upcoming therapeutic proposals. This review focuses on new and emerging agents for the treatment of migraine.
Self-retaining iris retractor used in cryo-extraction of lens
Rai Gulshan
Indian Journal of Ophthalmology , 1978,
Tramadol Safer and Effective Analgesic to Treat Chronic Pain: A Review
Gulshan Pandey
International Journal of Biomedical and Advance Research , 2012, DOI: 10.7439/ijbar.v3i1.270
Abstract: pain is defined by the International Association for the Study of Pain (IASP) as "an unpleasant sensory and emotional experience associated with actual or potential tissue damage, or described in terms of such damage".Pain has now been equated to a a€ fifth vital signa€ highlighting the significance of pain management in patient care. Tramadol is a centrally acting analgesic, structurally related to codeine and morphine .It is effectively used to treat moderate-to-severe acute and chronic pain in diverse conditions. Tramadol is placed on the second step of WHO analgesic ladder and in contrast to traditional opioids, exerts its analgesic activity, a dual mechanism of action inhibiting transmission as well as perception of pain. Tramadol is more suitable than NSAIDs and coxibs for patient with GI, renal and cardiovascular problems. Combined with low dependence/abuse potential, it has proven to be of significant advantage over other agents, especially in the elderly.
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