39 research outputs found

    Low Voltage Thin Layer Electrophoresis of Anions on Silica Gel-G And Titanium (IV) Tungstate Layers

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    The low voltage thin layer electrophoresis of anions has been studied on Silica Gel-G and titanium (iv) tungstate layers in in v arious complexing acid media such as Oxalic acid (O.A), Citric acid(C.A), Tartaric acid (T.A) and Succinic acid (S.A).The electrophoretic migration of anions also correlated with lyotropic number, N. The Spots are well defined in electrophoresis

    Electrophoretic Study of d-Block Metal Ions on Plain and Tri-n-Butylamine (TBA) Impregnated Titanium (IV) Tungstate Layers

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    RPTLE of ninteen d block metal ion studied on TBA impregnated titanium(IV)tungstate layer in nine solvent system among them three are complex forming acids OA,TA, CA to study the effect of complexation on migration. Electrophoretic migration also correlated with Ionc potential,Kd of metal ions and Ka of acids,pH of electrolytes.The spots are well defined in RPTLE and Mi is positiv

    How software size influence productivity and project duration

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    To make a perfect project plan, the software size of the order from the customer is the most important factor. The biggest challenge for the project manager is to estimate the project end date in the beginning of the project i.e. in project planning phase with realistic accuracy. Apart from other major inputs to estimate the project end date, expected team capability (productivity) and estimated software size are the major inputs that may influence the project end date. Software size is one of the most significant independent metric available in the planning phase and project manager has to estimate the other metrics based on the initial estimated software size. There is no direct relationship available between software size and project duration or software size and team productivity, however, there are industry data published by Quantitative Software Management and ISBSG that shows how these metrics influence each other. In this paper, using the data published by ISBSG and Quantitative Software Management, we try to statistically establish how productivity and project duration are influenced by software size. We have done linear regression analysis by generating the secondary data based on the data published by ISBSG and Quantitative Software Management. Linear regression equation validated with the actual project data and experimental results suggest that that productivity is significantly dependent on software size, however, project duration does not significantly depend on software size but may also be dependent on other metrics like team size, apart from software size

    PATHOLOGICAL OUTCOME IN THE PATIENTS WITH DIFFERENT AILMENTS: A COMPREHENSIVE STUDY IN LAKHIMPUR DISTRICT, ASSAM

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    Hemoglobin, total leukocyte count, differential leukocyte count, erythrocyte sedimentation rate, random blood sugar, creatinine and blood urea levels were measured in a total of 1123  participants attended at North lakhimpur Civil hospital during the year 2013. The prevalence of anemia was observed in 45.33% (509/1123) cases. Among the study participants, 5.08% (57/1123) cases were typhoid widal test positive. The level of low monocyte count observed in all the typhoid positive cases. Beside this an increase level of ESR value, random blood sugar, creatinine and blood urea were examined in a considerable number of cases. Male tend to have higher erythrocyte sedimentation rate values than the females. Only a single Plasmodium falciparum positive case was detected among the study samples. The study concludes that hematological and biochemical estimation is probably useful in early detection of case infection.Â

    Recurrent laryngeal nerve injury (RLNI) in thyroid surgery and its prevention

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    Background: Vocal cord paresis or paralysis due to iatrogenic injury of the recurrent laryngeal nerve (RLNI) is one of the main problems in thyroid surgery. Although many procedures have been introduced to prevent the nerve injury, still the incidence of recurrent laryngeal nerve palsy varies between 1.5-14%.The aim of the present study is to assess the risk factors of recurrent laryngeal nerve injury during thyroid surgery.Methods: This was a prospective, observational study conducted in the Department of ENT and Head & Neck Surgery, Gauhati Medical College & Hospital, Guwahati for a period of 3 years from 1st October, 2010 to 30th September, 2013. Factors predisposing to recurrent laryngeal nerve injury were evaluated such as pathology of the lesions and the type of operations and identification of recurrent laryngeal nerve intra-operatively. Preoperative and postoperative indirect laryngoscopic examinations were performed for all patients.Results: A total of 171 cases of thyroid surgery were performed during the study period. Majority of patients were females. The most common pathology observed in the thyroid gland for which surgery was indicated, according to preoperative FNAC report, was colloid goitre. RLN injury was observed in 3 cases (1.75%) in our study which occurred post hemi thyroidectomy. All these cases had unilateral vocal cord palsy.Conclusion: RLN palsy is one of the common complications after thyroid surgery. Most of the palsy is transient. Meticulous thyroid dissection and identification of RLN during surgery can reduce the rate of RLN palsy.

    Burden of head and neck cancers in Kamrup urban district cancer registry of Assam, India: a retrospective study

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    Background: Head and Neck cancers are basically squamous cell carcinomas. It is the fifth most common cancer and the sixth most common cause of cancer mortality in the world. Incidence of cancer as a whole for all sites is fourth highest in Kamrup Urban District (KUD) in males (AAR 185.2) and second highest (AAR 156.3) in females out of all Population Based Cancer Registries (PBCR) in India. Incidence of head and neck cancers in KUD is quite high both nationally and internationally. This retrospective study was carried out to assess the incidence pattern of head and neck cancers in Kamrup Urban District of Assam, India for the period of 2009-2011.  Methods: Cancer is not notifiable in India, so method of collecting information on cancer was active in PBCR Guwahati. A total of 4416 cases were registered during the three years (1st January 2009- 31st December 2011) of which 2508 were male and 1908 female. Statistical analysis used: Age Adjusted Rate (AAR), Crude Rate (CR) and Population pyramids are provided by NCRP-ICMR.Results: The relative proportion of head and neck cancers of total cancer cases registered in KUD constitutes 26% (654/2508) and 12% (225/1908) in male and female respectively. In males cancer of hypopharynx (AAR 14.7) was most common followed by tongue (AAR 9.4) and mouth (AAR 7.7). In females cancer of mouth (AAR 7.6) is most common followed by cancer of tongue (AAR 3.2).Conclusion: The pattern and incidence of various head and neck cancers is of utmost importance for primary prevention and early detection to adequately manage these cancers comprehensively in the community.

    Enhanced heat transfer using oil-based nanofluid flow through conduits

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    The application of nanofluids for enhancing the heat transfer rate is widely used in various heat exchanger applications. The selection of oil as the base to prepare nanofluids significantly enhances the thermal performance, due to its high heat carrying capacity as compared to conventional base fluid. A review is performed of various heat exchanger conduits having base fluid as nanoparticles with oil. It is reported that the heat transfer rate of a heat exchanger is significantly increased with the use of oil-based nanofluids. The rate of heat transfer depends on the type of nanoparticle, its concentration and diameter, the base fluid, as well as factors like the mixture of more than two nanoparticles (hybrid nanofluids) and stability. A review is also performed of the thermal performance of the different nanofluids analyzed by various investigators. The heat transfer system reviewed in this work includes triangular, square, and circular conduits, as well as rib surface conduits. The review of various applications viz. solar thermal systems, heat exchangers, refrigerators, and engines, is carried out where the inclusion of the oil base is used. It is reported that the amalgamation of the nanomaterial with the oil as base fluid is a prolific technique to enhance thermal performance. The performance of the reviewed research work is comparatively analyzed for different aspects viz. thermal oil, mineral oil, hybrid, and conventional nanoparticles, concentration of nanoparticles, etc. The novelty of the present work is the determination of the effective performing oil-based nanofluid in various applications, to figure out the selection of specific mineral oil, thermal oil, nanoparticle concentration, and hybrid nanofluids.https://www.mdpi.com/journal/energiesam2023Mechanical and Aeronautical Engineerin

    The evolutionary dynamics of variant antigen genes in Babesia reveal a history of genomic innovation underlying host-parasite interaction

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    Babesia spp. are tick-borne, intraerythrocytic hemoparasites that use antigenic variation to resist host immunity, through sequential modification of the parasite-derived variant erythrocyte surface antigen (VESA) expressed on the infected red blood cell surface. We identified the genomic processes driving antigenic diversity in genes encoding VESA (ves1) through comparative analysis within and between three Babesia species, (B. bigemina, B. divergens and B. bovis). Ves1 structure diverges rapidly after speciation, notably through the evolution of shortened forms (ves2) from 5′ ends of canonical ves1 genes. Phylogenetic analyses show that ves1 genes are transposed between loci routinely, whereas ves2 genes are not. Similarly, analysis of sequence mosaicism shows that recombination drives variation in ves1 sequences, but less so for ves2, indicating the adoption of different mechanisms for variation of the two families. Proteomic analysis of the B. bigemina PR isolate shows that two dominant VESA1 proteins are expressed in the population, whereas numerous VESA2 proteins are co-expressed, consistent with differential transcriptional regulation of each family. Hence, VESA2 proteins are abundant and previously unrecognized elements of Babesia biology, with evolutionary dynamics consistently different to those of VESA1, suggesting that their functions are distinct
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