236 research outputs found
Exact Shannon entropies for the multidimensional harmonic states
In this work we determine and discuss the entropic uncertainty measures of
Shannon type for all the discrete stationary states of the multidimensional
harmonic systems directly in terms of the states' hyperquantum numbers, the
dimensionality and the oscillator strength. We have found that these entropies
have a monotonically increasing behavior when both the dimensionality and the
population of the states are increasingComment: Accepted and Published in Physica
Socioeconomic profiles, production and resource use patterns in selected semi-arid Indian watershed villages
The collaborative watershed research and development project between ICRISAT and the Andhra Pradesh Rural Livelihoods Programme (APRLP) was initiated with an overall objective of alleviating poverty through watershed-based interventions that enhance agricultural productivity and the sustainability of rural livelihoods. The initial phase of the project focused on participatory technology evaluation in selected watersheds for development of best practices and upscalable implementation models. Characterization of the biophysical and socioeconomic systems is an important aspect of this work. A detailed baseline socioeconomic farm household survey was conducted in 2003 in selected watershed villages of Mahabubnagar, Nalgonda and Kurnool districts. This report analyzes the socioeconomic conditions and resource endowment patterns of the watershed farmers. The report provides a snapshot of the structure of production in the villages, constraints and potential for increased productivity, social and political networks, and the distribution of assets across social groups. The net household incomes from diverse sources including crop, livestock and off-farm and their contribution to total household income in the selected villages are presented. The report also analyzes the income inequalities and the effect of different income sources on household income inequalities in the watershed villages using inequality decomposition techniques
Toxicity of bisphenol a on humans: a review
ABSTRACT Bisphenol A (BPA) is a plastic ingredient produced in large quantities for use primarily in the production of polycarbonate plastics and epoxy resins. The present review focused on different mechanisms of BPA on human health in enzymatic, androgenic, neurological, liver and reproductive systems. The review explained the influence of BPA on different stages of human life likely in foetal stage, children and adults stages. The review also concentrated on how to handle BPA, treatment, preventive measures against BPA exposure
AFLP-based molecular characterization of an elite germplasm collection of Jatropha curcas L., a biofuel plant
Amplified fragment length polymorphism (AFLP) was employed to assess the diversity in the elite germplasm collection of Jatropha curcas, which has gained tremendous significance as a biofuel plant in India and many other countries recently. Forty-eight accessions, collected from six different states of India, were used with seven AFLP primer combinations that generated a total of 770 fragments with an average of 110 fragments per primer combination. A total of 680 (88%) fragments showed polymorphism in the germplasm analyzed, of which 59 (8.7%) fragments were unique (accession specific) and 108 (15.9%) fragments were rare (present in less than 10% accessions). In order to assess the discriminatory power of seven primer combinations used, a variety of marker attributes like polymorphism information content (PIC), marker index (MI) and resolving power (RP) values were calculated. Although the PIC values ranged from 0.20 (E-ACA/M-CAA) to 0.34 (E-ACT/M-CTT) with an average of 0.26 per primer combination and the MI values were observed in the range of 17.60 (E-ACA/M-CAA) to 32.30 (E-ACT/M-CTT) with an average of 25.13 per primer combination, the RP was recognized the real attribute for AFLP to determine the discriminatory power of the primer combination. The RP values for different primer combinations varied from 23.11 (E-ACA/M-CAA) to 46.82 (E-ACT/M-CTT) with an average of 35.21. Genotyping data obtained for all 680 polymorphic fragments were used to group the accessions analyzed using the UPGMA-phenogram and principal component analysis (PCA). Majority of groups obtained in phenogram and PCA contained accessions as per geographical locations. In general, accessions coming from Andhra Pradesh were found diverse as these were scattered in different groups, whereas accessions coming from Chhattisgarh showed occurrence of higher number of unique/rare fragments. Molecular diversity estimated in the present study combined with the datasets on other morphological/agronomic traits will be very useful for selecting the appropriate accessions for plant improvement through conventional as well as molecular breeding approaches
Efficient land water management practice and cropping system for increasing water and crop productivity in semiâarid tropics
In Indian semi-arid tropics (SATs), low water and crop productivity in Vertisols
and associated soils are mainly due to poor land management and erratic and low
rainfall occurrence. This study was conducted from 2014 to 2016 at the ICRISAT
in India to test the effect of broad bed furrows (BBF) as land water management
against conventional flatbed planting for improving soil water content (SWC) and
water and crop productivity of three cropping systems: sorghum [Sorghum bicolor
(L.) Moench]âchickpea (Cicer arientinum L.) and maize (Zea mays)âgroundnut
(Arachis hypogaea L.) as sequential and pearl millet [Pennisetum glaucum (L.)]
+ pigeonpea [Cajanus cajan (L.) Millsp.] as intercropping, grown under different
nutrients management involving macronutrients (N, P, and K) only and combined
application of macro- and micronutrients. The results stated that the SWC in BBF
was higher over flatbed by 9.35â10.44% in 0- to 0.3-m, 4.56â9.30% in 0.3- to 0.6-m
and 3.85â5.26% in 0.6- to 1.05-m soil depths during the cropping season. Moreover,
depletion of the soil water through plant uptake was higher in BBF than in flatbed.
Among the cropping systems, sorghumâchickpea was the best in bringing highest
system equivalent yield and water productivity with the combined application of
macro- and micronutrients. The BBF minimized water stress at critical crop growth
stages leading to increase crop yield and water productivity in SATs. Thus, BBF
along with the application of macro- and micronutrients could be an adaptation
strategy to mitigate erratic rainfall due to climate change in SATs
PathogenMip Assay: A Multiplex Pathogen Detection Assay
The Molecular Inversion Probe (MIP) assay has been previously applied to a large-scale human SNP detection. Here we describe the PathogenMip Assay, a complete protocol for probe production and applied approaches to pathogen detection. We have demonstrated the utility of this assay with an initial set of 24 probes targeting the most clinically relevant HPV genotypes associated with cervical cancer progression. Probe construction was based on a novel, cost-effective, ligase-based protocol. The assay was validated by performing pyrosequencing and Microarray chip detection in parallel experiments. HPV plasmids were used to validate sensitivity and selectivity of the assay. In addition, 20 genomic DNA extracts from primary tumors were genotyped with the PathogenMip Assay results and were in 100% agreement with conventional sequencing using an L1-based HPV genotyping protocol. The PathogenMip Assay is a widely accessible protocol for producing and using highly discriminating probes, with experimentally validated results in pathogen genotyping, which could potentially be applied to the detection and characterization of any microbe
Connector Inversion Probe Technology: A Powerful One-Primer Multiplex DNA Amplification System for Numerous Scientific Applications
We combined components of a previous assay referred to as Molecular Inversion Probe (MIP) with a complete gap filling strategy, creating a versatile powerful one-primer multiplex amplification system. As a proof-of-concept, this novel method, which employs a Connector Inversion Probe (CIPer), was tested as a genetic tool for pathogen diagnosis, typing, and antibiotic resistance screening with two distinct systems: i) a conserved sequence primer system for genotyping Human Papillomavirus (HPV), a cancer-associated viral agent and ii) screening for antibiotic resistance mutations in the bacterial pathogen Neisseria gonorrhoeae. We also discuss future applications and advances of the CIPer technology such as integration with digital amplification and next-generation sequencing methods. Furthermore, we introduce the concept of two-dimension informational barcodes, i.e. âmultiplex multiplexing padlocksâ (MMPs). For the readers' convenience, we also provide an on-line tutorial with user-interface software application CIP creator 1.0.1, for custom probe generation from virtually any new or established primer-pairs
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