Influence of parameters on mechanical and micro-structural properties of tungsten inert gas (TIG) welded joint of 1 mm thin Inconel 625 plates

Inconel 625 (IN625), since its invention, has been a material of choice for industries where components in service conditions are exposed to extremely high temperatures, corrosion, and oxidation environments. As per the American welding society for butt-joining such alloys in sheets, non-traditional techniques are the best means for producing permanent joints. These techniques require high-cost setup and high maintenance costs which are only economical for high-volume assembly line fabrication in mass-production facilities. Therefore, Tungsten Inert Gas (TIG) welding is highly suitable for producing defect-free autogenous weldments in high-strength alloy sheets with a thickness below 3mm. The current work focuses on the experimental investigation of the TIG welding of Inconel 1mm sheets. In this work, mechanical properties and microstructure are studied for controlled heat input of TIG welding. Current is varied from 40A to 65A and voltage from 10V to 12V. Only three combinations of parameters show sound weld visually and are analyzed by performing various testing. The main objective of the study is to find the feasible process parameters for the micro joining of IN625 sheets. From this discussion, it appears that arc energy, welding current, and voltage significantly affect the quality of the weld

Status of Plasmodium Falciparum and Vivax in Jharkhand: A Five Year (2004-08) Retrospective Study at Rajendra Institute of Medical Sciences, Ranchi

ABSTRACT Malaria is well known for its fatalities worldwide. In India, it is still endemic in many areas where two species of Plasmodium namely Plasmodium vivax and Plasmodium falciparum are reported. P.vivax is widespread, creating lots of morbidities across the country. P. falciparum, on the other hand, though comparatively narrow in its infectious volume, is a serious cause of mortalities in India. A five year survey was conducted from 2004 to 2008 in a high malaria-hit district, Ranchi. Thick and thin blood smears were made at the Department of Clinical Pathology, Rajendra Institute of Medical Sciences (RIMS), where the microscopic examinations were carried out. The overall reported and examined cases at RIMS included 36643 suspected malaria cases, out of which, 21833(59.5%) were found positive. Out of these positive cases, 6842(31.3%) were confirmed as P. falciparum patients and 14991(68.6%) as P. vivax cases respectively. Number of negative cases was 14811 (40.4%). In this study, it was observed that after the year 2005, incidence of malaria suddenly dropped by 50% and remained almost static on the same level in the following years with only some seasonal variations. However, it was observed that P. falciparum steadily became more dangerous. It is therefore highly necessary to take immediate and effective measures to minimize the complications of P. falciparum along with P. vivax to prevent death toll in these areas

Evaporation of water as related to wind barriers

Submitted to Office of Water Resources Research, U.S. Dept. of the Interior.Includes bibliographical references.OWRR Project no. B-015 COLO

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Not AvailableSoil and plant analyses are the main techniques for the estimation of N and P nutrients. These tests are costly, time consuming and do not represent the whole field because of the variability of N and P levels in soil and other factors like moisture, climatic and plant conditions. Because of the large soil variability, traditional testing either becomes unrepresentative or costly because of many samples that need to be collected across fields. With increase in the use of variable rate technology and precision agriculture, multi identify and estimate remotely the nutritional status of plants. and its causes can never be over emphasized. production and are used to increase the productivity of the crop. This necessitates understanding the specific requirement of the crop and strategies for their better management. Monito the stress conditions are extremely important to develop strategies. Remote sensing technique can be used on large scale to monitor the crop under different stress condition. Spectral reflectance forms the basis Measurements with high spectral resolution open up new opportunities to find characteristic spectral features related to the crop status. The nitrogen (N) and phosphorus (P) are major plant nutrient elements that are required to be supp for vegetation production. Determining these nutrients are usually done through soil and plant testing. For precision management of nutrients these techniques are either expensive or inaccurate. Under loss of plant production whereas an oversupply leads to runoff from the paddock causing nitrification or downstream eutrophication. Remote sensing technique can play an important role in analyzing plant nutrients in a timely fashion. The hyperspectral reflectance study revealed different combination of wavelengths in different growth stages of a crop. The hyperspectral remotely sensed estimate provides accurate, timely and fast spatial and temporal measurements of plant N and P.Not Availabl

Naked Eye Single Tube Red Cell Osmotic Fragility Test Screening For Detection Of B-Thalassemia Trait -An Evaluation Against HPLC Method At Rajendra Institute Of Medical Sciences, Ranchi (A Tribal Zone )

ABSTRACT The objective of the manuscript is to evaluate the effectiveness of NACKED EYE SINGLE TUBE RED CELL OSMOTIC FRAGILITY TEST (NESTROFT) as screening tool for detection of B-THALASSEMIA TRAIT against the HPLC method. NESTROFT and HPLC METHOD were applied to blood sample of 84 patients of suspected cases of B-Thalassemia and other haemoglobinopathies. Out of 84, Beta Thal Trait 13 cases (15.4%) , Delta Beta Thal Trait 9( 10.7%) ,Thal Major 5( 5.9%), HPFH 7( 8.3), Sickle Homo 12 (14.2 %), Sickle Trait 10(11.9%) Sickle Thal Trait 7(8.3%) & IDA 21(25%) cases were detected by HPLC . The NESTROFT test was successful in detecting 12/13 subjects with B-Thalassemia trait. Sensitivity of the test was 92.31 % and specificity was 63.38 %. The test was positive in detecting other haemoglobinopathies like sickle cell disease also. The test proved to be simple, cheap easy to perform and adaptable for mass screening coming close to an ideal screening test for B-Thalassemia trait

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Not AvailableField experiments were conducted to study the influence of nitrogenous fertilizer on the rice crop for puddle and unpuddled tillage conditions using remote sensing technique at the research farm of Indian Agricultural Research Institute, New Delhi during Kharif 1999 and Kharif 2001. Band ratio calculated with the help of spectral radiance observation of the crop canopy which were collected with the Portable Spectroradiometer, scanned from 330 nm to 1100 nm of electromagnetic spectrum range at 5nm band-width. Band ratio was calculated for the both tillage practices, puddle and unpuddled situation at different growth stages for different fertilizer treatment. Fertilized plots were observed to have a higher value of BR than controlled ones throughout the crop growth period, both in puddled and unpuddled treatments.The higher values of band ratio were observed in puddled rice compare to the unpuddled rice irrespective of growth stages and fertilizer application levels.Not Availabl

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Not AvailableAssessing and monitoring crop growth, identifying the stress conditions are extremely important to develop strategies for yield forecast. Field experiment was conducted in the research farm of Indian Agricultural Research Institute (IARI), New Delhi in the year 1999 and 2001 for puddling and unpuddling rice. Statistical correlations were developed between NDVI (Normalized Difference Vegetation Index) and RVI (Ratio Vegetation Index) with LAI (Leaf Area Index), DM (Dry matter) production and total leaf chlorophyll content. Second order polynomial equations were developed to correlate remotely sensed data with crop biometrics. Polynomial second order equations of Band Ratio were found to be better fitted than NDVI with crop biometrics.Not Availabl

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Not AvailableA trial on long-term effect of fertilizer (Permanent Manurial Trial) is being conducted at Birsa Agricultural University, Ranchi research farm since 50 years stating from 1956-67 and still continuing till date. Various soil physical parameters were analyzed and found that plots treated by inorganic fertilizer alone showed adverse effect on bulk density, porosity, water holding capacity and available water after harvest of crop. However, the plot treated organically or with combination of both organic as well as inorganic showed better result on the above physical parameters. Per cent porosity was also determined and found to be highest in FYM treated plot (49.7 %) whereas minimum in nitrogen alone treated plot (37.4%).Not Availabl

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Not AvailableA field experiment was conducted at the research farm of Indian Agricultural Research Institute, New Delhi during Kharif 1999 and Kharif 2001 to study the influence of nitrogenous fertilizer on the tilth of rice crop by remote sensing technique. Spectral radiance observations of the crop canopy were collected with the Portable Spectroradiometer which scanned from 330 nm to 1100 nm of electromagnetic spectrum range at 5nm interval (band-width). Normalized Difference Vegetation Index was calculated for the both tillage practices, puddle and unpuddled situation at different growth stages for different fertilizer treatment. The higher values of normalized difference vegetation index were observed in puddled rice compare to the unpuddled rice irrespective of growth stages and fertilizer application levelsNot Availabl