2,606 research outputs found

    A randomized placebo-controlled pilot study of the efficacy and safety of D-cycloserine in people with chronic back pain.

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    BACKGROUND: Few effective pharmacological treatment options exist for chronic back pain, the leading cause of disability in the US, and all are associated with significant adverse effects. OBJECTIVE: To determine the efficacy and safety of D-cycloserine, a partial agonist to the N-methyl-D-aspartate receptor, in the treatment of chronic low back pain. METHODS: A total of 41 participants with chronic back pain who met all inclusion and exclusion criteria were enrolled in a double-blind, placebo-controlled randomized pilot trial of D-cycloserine. Treatment was administered orally for six weeks at escalating daily doses of 100 mg, 200 mg, and 400 mg, each for two weeks. The primary outcome measure was back pain intensity using the Numeric Rating Scale (0-10). Secondary measures were back pain-related questionnaires: McGill Pain Questionnaire short form, painDETECT, PANAS, and BDI. The pre-specified analysis was a two-way repeated measures analysis of variance. RESULTS: A treatment difference was observed between groups treated with D-cycloserine and placebo at six weeks of 1.05 ± 3.1 units on the Numeric Rating Scale, with an effect size of 0.4 and p = 0.14. This trend of better chronic back pain relief with D-cycloserine was also observed in the secondary measures. No safety issues were seen. CONCLUSION: The difference in mean pain between the D-cycloserine and placebo groups did not reach statistical significance. However, a clinically meaningful effect size in the magnitude of pain relief was observed with a consistent pattern across multiple outcome measures with good safety, supporting further research into the effectiveness of D-cycloserine for chronic back pain

    Bacillus pumilus strain YSPMK11 as plant growth promoter and bicontrol agent against Sclerotinia sclerotiorum

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    A study was executed in a direction to attenuate Sclerotinia stalk rot (SSR) disease through biocontrol agent and also to enhance crop productivity. Culture filtrate of bacterial strain YSPMK11 inhibited growth of Sclerotinia sclerotiorum in vitro which also exhibited higher plant growth promoting attributes. Interaction studies revealed maximum (81.50%) growth inhibition at 35 °C and pH 7.0 after 72 h incubation period with 15% culture filtrate. Based upon 16S rRNA gene sequence strain, YSPMK11 was identified as Bacillus pumilus. Furthermore, the genome of this isolate was searched for antimicrobial lipopeptide, i.e., ItuD and SrfC genes. The PCR amplification results showed the presence of both these lipopeptide genes in isolate YSPMK11. Iturin A as antifungal compound was identified as major components of fraction through GC/MS. In field experiments, the application of strain YSPMK11 cell suspension (108 CFU/ml) suppressed disease severity by 93% and increased curd yield by 36% which was more that of commercially used fungicide in farmer practices under mid-hills of Himachal Pradesh. Conclusively, our study is first to demonstrate the effect of B. pumilus strain YSPMK11 in suppression of SSR under field conditions and would be employed as an efficient biocontrol agent to replace commercial fungicides in cauliflower cropping system. In addition, the presence of both lipopeptide genes (ItuD and SrfC) and iturin A in this isolate makes him potent strain for biological control application in agriculture

    Design of Small Scale Anaerobic Digester for Application in Indian Village: A Review

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    Proper choosing of design of anaerobic digester and estimation of it size is an important point in the successful implementation of anaerobic digester. The end users of anaerobic digester in most cases are farmers whose technical knowledge of the systems is limited. And there is a lack of information available on design methods for these systems. The goals of this study were to develop literature that could be used by laymen to decide the design and size of anaerobic digester. To develop a design formula that could be used for anaerobic digester sizing based on livestock waste availability. The case studies were conducted on three scales: one household, six households, and a village of 67 and 28 households. The biogas produced in case study for one household was0.44 m3, for six household was 2.60 m3, for Kapurpur village of 67 household was 11.33 m3

    Rejuvenation of Rangelands – Role of Diversity and Improvement Strategies of Range Grasses

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    In India, a major part of the rural economy is dependent on the grazing-based livestock husbandry which is unique integration of agriculture and livestock coupled with rich traditional knowledge. Ecosystems of common property resources had been a mainstay in rural economy and livelihood. The traditional grazing forage resources in arid and semi-arid regions have deteriorated a lot due to various factors including heavy grazing pressure, climate change and dominance of invasive species, thus, needs rejuvenation. Additionally, these are causing serious economic and ecological problems such as poor productivity, soil and water erosion and reduced carbon sequestration. The genetic improvement of these grasses encounters various problems such as polyploidy, apomixis, seed shedding and shattering and poor seed to ovule ratio. Transfer of desirable traits from donor germplasm becomes difficult due to the existence of apomixis. The breeding objectives are also multifold including herbage yield, forage nutritional quality, abiotic stress tolerance etc. Identification of sexual lines is prerequisite for transfer of traits. Mutation attempts are also not effective due to polyploidy. ICAR- Indian Grassland and Fodder Research Institute, Jhansi has collected rich genetic diversity in these range grasses especially Dichanthium-Bothriochloa complex, Heteropogon, Chrysopogon, Sehima, Panicum, Cenchrus, Pennisetum etc. from different parts of the country as well as procurement from gene banks of the world. These germplasm were evaluated for morphological traits which indicated the existence of wide variation for various morpho-agronomic traits. The paper deals with reporting the extent of variability among the potential range grasses; with prospects of utilizing the diversity in rejuvenating the degraded rangelands of India and other places with isoclimatic conditions

    Bi-directional associations between religious attendance and mental health: findings from a British Birth Cohort study

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    Background: There is evidence that religious attendance is associated with positive outcomes for mental health; however, there are few longitudinal studies, and even fewer, which take into account the possibility of bi-directional associations. This study aimed to investigate bi-directional associations between religious attendance and mental health. Methods: Participants were 2125 study members who provided data at age 68–69 from the Medical Research Council National Survey of Health and Development (1946 British birth cohort study). Mental health was assessed using the 28-item General Health Questionnaire at ages 53, 60–64 and 68–69. Religious attendance was measured using a 4-point scale (weekly=3, monthly=2, less than monthly=1 or never=0) at ages 43, 60–64 and 68–69. Cross-lagged path analysis was used to assess reciprocal associations between mental health and religious attendance, adjusting for gender and education. Results: Previous religious attendance was strongly related to later attendance (r=0.62–0.74). Similarly, mental health at baseline was strongly associated with subsequent mental health scores (r=0.46–0.54). Poor mental health at age 53 and 60–64 was associated with more frequent religious attendance at age 60–64 (b=0.04; 95% CI: 0.02 to 0.06; p<0.05), and 68–69 (b=0.03; 95% CI: 0.02 to 0.06; p<0.05), respectively. There was no evidence that religious attendance at age 43, 60–64 or 68–69 was associated with later or concurrent mental health. Conclusion: Using birth cohort data from the UK, it was found that poor mental health was associated with later religious attendance but not vice versa. Future research should confirm these novel findings and explore the underlying mechanisms between religious attendance and mental health

    Potential of C4 Tropical Grasses to Contribute in Carbon Sequestration, Environmental Security and Livelihood Opportunities through Increased Fodder Availability

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    The world grasslands/rangeland ecosystems comprise 26% of earth’s surface and have immense ecological and economic significance. Diversity of grasslands had been a key element for their sustainability. Grasslands in India have existed as natural ecosystems for millions of years. It is a major source of income, employment and livelihood to the rural families. Owing to heavy grazing pressure, coupled with other social/anthropogenic factors, the grazing resources have fast deteriorated. The country has many old and natural grasslands with ethnic and economic value. Comprehensive ecological studies including floristic compositions, dominant species, grazing pressure and the climax/sub-climax stages of ecological succession will surely provide prescriptions for developing and rejuvenating these grazing resources. Grasslands face challenges in arid, semiarid and the moist lowlands with trees, shrubs and many invasive species including alien trees and shrubs introduced intentionally or unintentionally. Fast degrading rangelands in dry areas is causing a threat to huge amount of carbon stored in the top soil on earth in addition to threat to global hotspots for biodiversity. In the context of fast changing climate, the grazing lands can play a significant role. High water use efficiency and productivity of most C4 tropical grasses make them suitable for coping with climate change along with quality fodder

    Topological Hall effect induced by classical large-spin background: su(2)su(2) path-integral approach

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    The su(2)su(2) coherent-state path-integral technique is employed to study lattice electrons strongly coupled to a quantum spin background. In the large-spin limit it is replaced with its classical counterpart that breaks the time-reversal symmetry. The fermions propagating through a classical large-spin texture may then exhibit the topological Hall effect which arises even for a zero scalar spin chirality of the underlying spin background.Comment: 6 pages, 9 figure
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