39 research outputs found

    Evaluation of yield monitoring system installed on indigenous grain combine harvester for rice crop

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    Precision agriculture is a methodology to identify and exploit variability within an agricultural field.  In India, a yield is measured during marketing of harvested crop and as a gross yield of the land owned by the farmer.  The yield monitor mounted over grain combine harvester measures and records information such as grain flow, grain moisture, area covered and location.  An automated yield monitoring system consisting of a yield sensor, global positioning system (GPS), field computer with custom software was mounted on a self propelled indigenous grain combine harvester for real-time crop yield mapping along with moisture data.  By means of optical sensors (light emitter and detector), the height of the grain on the elevator paddles was measured and converted in the grain mass flow.  Three rice fields were harvested to evaluate the performance of the yield monitor for grain yield and moisture mapping of harvested grains.  The actual yield maps were generated by using Arc GIS software from the data collected for three different rice fields.  The total area harvested by using indigenous combine harvester fitted with yield monitor and moisture sensor was 0.84 ha comprising three fields (1, 2 and 3) having areas 0.3, 0.22 and 0.32 ha respectively.  On an average, yields for all the three fields (1, 2 and 3) were 4,325.91, 5,093.14 and 4,287.66    kg ha-1 with moisture content of 21.42%, 22.78% and 20.42% (wet basis) recorded respectively.  On an average, yield variations recorded for all the three fields (1, 2 and 3) were having 30.59%, 40.80% and 40.39% coefficient of variation respectively.  The minimum and maximum yields recorded within all the fields harvested were 577.08 and 7,661.48 kg ha-1 with an average yield of 4,287.66 kg ha-1 having 37.26% coefficient of variation (CV) in all the three fields.   Keywords: Combine harvester, precision agriculture, sensor; yield maps, yield monito

    Attribute Based Coding, Review and Gap Analysis of Cotton Harvesting Processes and Machines

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    Mechanical cotton harvesters, i.e. strippers and pickers are commercially available, but these cannot be used for cotton harvesting from varieties presently grown in India due to design constraints and agronomic practices. Higher initial cost and field capacity make cotton harvesters unsuitable and unaffordable for small and medium farms. Hence, a comprehensive review of cotton harvesting mechanisms developed till date was carried out. Different attributes relating to problem have been expressed in matrix form to identify of crop and machine parameters which could be utilized by Researchers, Engineers and Manufacturers for development and refinement of mechanical cotton harvesters for small and medium farms. The matrix depicts on academic work of each paper and each attribute. Coding/grading of these attributes was done according to their importance in the research publications. Summation of coded attributes has been done publication-wise as well as category-wise so that the value of each attribute and each publication gets identified for the development of a need based mechanical cotton harvester. For publication-wise attribute coding, a total of 19 publications with 21 attributes were reviewed and related with the mechanical cotton harvesters. A publication with all the 21 selected attributes had been discussed in detail and was assigned a score of 105. Under the category-wise attribute coding, attributes such as crop variety, yield, row spacing, plant height and plant population were considered and assigned grade more than 20 as most of the authors discussed these attributes in their studies. Other parameters like limb length, plant canopy (spread width) along and across the rows, height of lower and upper boll were accorded less importance as their grade was less than 10 out of a total 95 score. Defoliant attributes were discussed in 14 out of 19 papers reviewed and had 28 grade points as compared to desiccant, which was discussed in only 2 papers and assigned a grade of 5 only. Under the machine parameters, type of mechanism was assigned a grade point i.e. 66 as mechanical harvester performance was mainly dependent on this attribute. So far, as the performance of harvester was concerned, various parameters like picking efficiency, trash content, lint turnout and losses were discussed in different studies.

    Study of serum homocysteine level in cases of non-diabetic ischemic stroke

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    Background: Aim of the study was to measure serum homocysteine levels in non-diabetic ischemic stroke and to co-relate its significance with other risk factors of ischemic stroke. It was a case control study.Methods: The study was done in the Department of Medicine, VSS.I.M.S.A.R, Burla, Odisha. 42 patients of non-diabetic ischemic and 42 age and sex matched controls were included in the study. Adults above the age of 18 years who were non-diabetic presenting with first-ever ischemic stroke, confirmed by CT scan of brain were included. Diabetic patients, haemorrhagic stroke, suspected embolic stroke, patients on vitamin supplementations, chronic usage of phenytoin were excluded. Routine investigations, fasting serum lipid profile and serum homocysteine levels were done.Results: Mean serum homocysteine level in ischemic stroke patients were found to be much higher (25.83 micro mol/L) in comparison to control group (9.77 micro mol/L) which is statistically significant. Mean serum homocysteine levels were found to be higher in patients with age group of more than 60 years, male sex, sedentary lifestyle, vegetarian diet, hypertensive patients and patient with normal fasting lipid profile. Statistical analysis for significance of difference was done using Chi-Square test with Yate’s correction.Conclusions: A statistically significant correlation was found between all the studied risk factors among non-diabetic patients and serum homocysteine levels. Estimation of serum homocysteine is advisable in all cases of non-diabetic ischemic strokes to know the prognosis

    Dixdc1 Is a Critical Regulator of DISC1 and Embryonic Cortical Development

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    The psychiatric illness risk gene Disrupted in Schizophrenia-1 (DISC1) plays an important role in brain development; however, it is unclear how DISC1 is regulated during cortical development. Here, we report that DISC1 is regulated during embryonic neural progenitor proliferation and neuronal migration through an interaction with DIX domain containing-1 (Dixdc1), the third mammalian gene discovered to contain a Disheveled-Axin (DIX) domain. We determined that Dixdc1 functionally interacts with DISC1 to regulate neural progenitor proliferation by co-modulating Wnt-GSK3β/β-catenin signaling. However, DISC1 and Dixdc1 do not regulate migration via this pathway. During neuronal migration, we discovered that phosphorylation of Dixdc1 by cyclin-dependent kinase 5 (Cdk5) facilitates its interaction with the DISC1-binding partner Ndel1. Furthermore, Dixdc1 phosphorylation and its interaction with DISC1/Ndel1 in vivo is required for neuronal migration. Together, these data reveal that Dixdc1 integrates DISC1 into Wnt-GSK3β/β-catenin-dependent and -independent signaling pathways during cortical development and further delineate how DISC1 contributes to neuropsychiatric disorders.Human Frontier Science Program (Strasbourg, France) (Long-Term Fellowship)Natural Sciences and Engineering Research Council of Canada (Postdoctoral Fellowship)National Alliance for Research on Schizophrenia and Depression (U.S.) (Young Investigator Award)National Institutes of Health (U.S.) (Grant NS37007

    Clinico-laboratory profile of dengue patients in a tertiary hospital of Eastern India

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    Background: Dengue is the most rapidly spreading mosquito-borne viral disease of mankind. According to WHO, about 50-100 million new dengue infections are estimated to occur annually in more than 100 endemic countries.So, the present study has been done to analyzed varied clinical and laboratory profile of confirm dengue cases.Methods: Cross-sectional observational study was undertaken among 106 adult Ig M Ab positive cases admitted during October 2015 to September 2017. All patients were evaluated clinically and subjected for relevant laboratory investigations.Results: In our study male and female ratio was 20.2:1. Most common symptom was fever (95.3%) and least common was jaundice. Second most symptom was headache (70.8%). Myalgia was present in 49.1% of cases. 54.7% had nausea/vomiting. Hypotension was noticed in 33% of cases whereas encephalopathy and melaena was found in 6.6% and 2.83% respectively. Leucopenia was present in 57.5% and thrombocytopenia in 50.9% of cases.Conclusions: Younger male were commonly affected with dengue fever and promptly responded to conservative therapy due to early confirmation of diagnosis. Mortality was only 1.8% cases, may be due to delay in seeking medical attention

    Disrupted in Schizophrenia 1 Regulates Neuronal Progenitor Proliferation via Modulation of GSK3β/β-Catenin Signaling

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    The Disrupted in Schizophrenia 1 (DISC1) gene is disrupted by a balanced chromosomal translocation (1; 11) (q42; q14.3) in a Scottish family with a high incidence of major depression, schizophrenia, and bipolar disorder. Subsequent studies provided indications that DISC1 plays a role in brain development. Here, we demonstrate that suppression of DISC1 expression reduces neural progenitor proliferation, leading to premature cell cycle exit and differentiation. Several lines of evidence suggest that DISC1 mediates this function by regulating GSK3β. First, DISC1 inhibits GSK3β activity through direct physical interaction, which reduces β-catenin phosphorylation and stabilizes β-catenin. Importantly, expression of stabilized β-catenin overrides the impairment of progenitor proliferation caused by DISC1 loss of function. Furthermore, GSK3 inhibitors normalize progenitor proliferation and behavioral defects caused by DISC1 loss of function. Together, these results implicate DISC1 in GSK3β/β-catenin signaling pathways and provide a framework for understanding how alterations in this pathway may contribute to the etiology of psychiatric disorders.National Alliance for Research on Schizophrenia and Depression (U.S.) (Young Investigator Award)Natural Sciences and Engineering Research Council of Canada (Postdoctoral Award)Human Frontier Science Program (Strasbourg, France) (Fellowship)Singleton FellowshipNational Institutes of Health (U.S.) (Grant NS37007

    Impact of natural killer cells on outcomes after allogeneic hematopoietic stem cell transplantation: A systematic review and meta-analysis.

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    Background: Natural killer (NK) cells play a vital role in early immune reconstitution following allogeneic hematopoietic stem cell transplantation (HSCT). Methods: A literature search was performed on PubMed, Cochrane, and Clinical trials.gov through April 20, 2022. We included 21 studies reporting data on the impact of NK cells on outcomes after HSCT. Data was extracted following the PRISMA guidelines. Pooled analysis was done using the meta-package (Schwarzer et al.). Proportions with 95% confidence intervals (CI) were computed. Results: We included 1785 patients from 21 studies investigating the impact of NK cell reconstitution post-HSCT (8 studies/1455 patients), stem cell graft NK cell content (4 studies/185 patients), therapeutic NK cell infusions post-HSCT (5 studies/74 patients), and pre-emptive/prophylactic NK cell infusions post-HSCT (4 studies/77 patients). Higher NK cell reconstitution was associated with a better 2-year overall survival (OS) (high: 77%, 95%CI 0.73-0.82 vs low: 55%, 95%CI 0.37-0.72; n=899), however, pooled analysis for relapse rate (RR) or graft versus host disease (GVHD) could not be performed due to insufficient data. Higher graft NK cell content demonstrated a trend towards a better pooled OS (high: 65.2%, 95%CI 0.47-0.81 vs low: 46.5%, 95%CI 0.24-0.70; n=157), lower RR (high: 16.9%, 95%CI 0.10-0.25 vs low: 33%, 95%CI 0.04-0.72; n=157), and lower acute GVHD incidence (high: 27.6%, 95%CI 0.20-0.36 vs low: 49.7%, 95%CI 0.26-0.74; n=157). Therapeutic NK or cytokine-induced killer (CIK) cell infusions for hematologic relapse post-HSCT reported an overall response rate (ORR) and complete response (CR) of 48.9% and 11% with CIK cell infusions and 82.8% and 44.8% with NK cell infusions, respectively. RR, acute GVHD, and chronic GVHD were observed in 55.6% and 51.7%, 34.5% and 20%, and 20.7% and 11.1% of patients with CIK and NK cell infusions, respectively. Pre-emptive donor-derived NK cell infusions to prevent relapse post-HSCT had promising outcomes with 1-year OS of 69%, CR rate of 42%, ORR of 77%, RR of 28%, and acute and chronic GVHD rates of 24.9% and 3.7%, respectively. Conclusion: NK cells have a favorable impact on outcomes after HSCT. The optimal use of NK cell infusions post-HSCT may be in a pre-emptive fashion to prevent disease relapse

    Developmental axon pruning mediated by BDNF-p75NTR–dependent axon degeneration

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    The mechanisms that regulate the pruning of mammalian axons are just now being elucidated. Here, we describe a mechanism by which, during developmental sympathetic axon competition, winning axons secrete brain-derived neurotrophic factor (BDNF) in an activity-dependent fashion, which binds to the p75 neurotrophin receptor (p75NTR) on losing axons to cause their degeneration and, ultimately, axon pruning. Specifically, we found that pruning of rat and mouse sympathetic axons that project to the eye requires both activity-dependent BDNF and p75NTR. p75NTR and BDNF are also essential for activity-dependent axon pruning in culture, where they mediate pruning by directly causing axon degeneration. p75NTR, which is enriched in losing axons, causes axonal degeneration by suppressing TrkA-mediated signaling that is essential for axonal maintenance. These data provide a mechanism that explains how active axons can eliminate less-active, competing axons during developmental pruning by directly promoting p75NTR-mediated axonal degeneration

    Fungal Planet description sheets: 1383–1435

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    Novel species of fungi described in this study include those from various countries as follows: Australia, Agaricus albofoetidus, Agaricus aureoelephanti and Agaricus parviumbrus on soil, Fusarium ramsdenii from stem cankers of Araucaria cunninghamii, Keissleriella sporoboli from stem of Sporobolus natalensis, Leptosphaerulina queenslandica and Pestalotiopsis chiaroscuro from leaves of Sporobolus natalensis, Serendipita petricolae as endophyte from roots of Eriochilus petricola, Stagonospora tauntonensis from stem of Sporobolus natalensis, Teratosphaeria carnegiei from leaves of Eucalyptus grandis × E. camaldulensis and Wongia ficherai from roots of Eragrostis curvula. Canada, Lulworthia fundyensis from intertidal wood and Newbrunswickomyces abietophilus (incl. Newbrunswickomyces gen. nov.)on buds of Abies balsamea. Czech Republic, Geosmithia funiculosa from a bark beetle gallery on Ulmus minor and Neoherpotrichiella juglandicola (incl. Neoherpotrichiella gen. nov.)from wood of Juglans regia. France, Aspergillus rouenensis and Neoacrodontium gallica (incl. Neoacrodontium gen. nov.)from bore dust of Xestobium rufovillosum feeding on Quercus wood, Endoradiciella communis (incl. Endoradiciella gen. nov.)endophyticin roots of Microthlaspi perfoliatum and Entoloma simulans on soil. India, Amanita konajensis on soil and Keithomyces indicus from soil. Israel, Microascus rothbergiorum from Stylophora pistillata. Italy, Calonarius ligusticus on soil. Netherlands , Appendopyricularia juncicola (incl. Appendopyricularia gen. nov.), Eriospora juncicola and Tetraploa juncicola on dead culms of Juncus effusus, Gonatophragmium physciae on Physcia caesia and Paracosmospora physciae (incl. Paracosmospora gen. nov.)on Physcia tenella, Myrmecridium phragmitigenum on dead culm of Phragmites australis, Neochalara lolae on stems of Pteridium aquilinum, Niesslia nieuwwulvenica on dead culm of undetermined Poaceae, Nothodevriesia narthecii (incl. Nothodevriesia gen. nov.) on dead leaves of Narthecium ossifragum and Parastenospora pini (incl. Parastenospora gen. nov.)on dead twigs of Pinus sylvestris. Norway, Verticillium bjoernoeyanum from sand grains attached to a piece of driftwood on a sandy beach. Portugal, Collybiopsis cimrmanii on the base of living Quercus ilex and amongst dead leaves of Laurus and herbs. South Africa , Paraproliferophorum hyphaenes (incl. Paraproliferophorum gen. nov.) on living leaves of Hyphaene sp. and Saccothecium widdringtoniae on twigs of Widdringtonia wallichii. Spain, Cortinarius dryosalor on soil, Cyphellophora endoradicis endophytic in roots of Microthlaspi perfoliatum, Geoglossum laurisilvae on soil, Leptographium gemmatum from fluvial sediments, Physalacria auricularioides from a dead twig of Castanea sativa , Terfezia bertae and Tuber davidlopezii in soil. Sweden, Alpova larskersii, Inocybe alpestris and Inocybe boreogodeyi on soil. Thailand, Russula banwatchanensis, Russula purpureoviridis and Russula lilacina on soil. Ukraine, Nectriella adonidis on over wintered stems of Adonis vernalis. USA, Microcyclus jacquiniae from living leaves of Jacquinia keyensis and Penicillium neoherquei from a minute mushroom sporocarp. Morphological and culture characteristics are supported by DNA barcodes
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