OALib Journal期刊

ISSN: 2333-9721

費用:99美元

投稿

匹配條件: “HK Upreti” ,找到相關結果約185條。
列表顯示的所有文章,均可免費獲取
第1頁/共185條
每頁顯示
Effect of human urine as fertilizer on crop production
HK Upreti, P Shrestha, P Paudel
Agronomy Journal of Nepal , 2011, DOI: 10.3126/ajn.v2i0.7532
Abstract: Nutrient cycling in the soil-plant ecosystem is an essential component of sustainable agriculture. Human excreta though have high nutrient value is being neglected and simply dumped as waste. Out of the human excreta, urine has high nitrogenous fertilizer value than feces. Hence by separating urine in ECOSAN toilet, it can be of great use in fulfilling the fertilizer demand of the country. The main objective of this study is to assess the effect of human urine on crop yield and to find out the appropriate urine dose and time of application to different crops. The study shows that urine can act as effective as a chemical fertilizer and can be used as an efficient source of plant nutrients. In general, 2-3 splits urine application in addition with phosphorus and potash fertilizer gave the comparable result with that of chemical fertilizer. Though there is no statistical difference in production of the crops, the average yield was found to be higher in the application of chemical fertilizer in all crops except in wheat. From the study, it can be concluded that any crops can be grown using urine as a fertilizer without significant reduction in the yield if nutrient losses during handling could minimize. The study recommends the further study in a long-term urine application trial to verify the obtained result and also to observe the effect of urine on soil properties and plant health as well as on the efficacy of urine along with compost in crop production. DOI: http://dx.doi.org/10.3126/ajn.v2i0.7532 Agronomy Journal of Nepal (Agron JN) Vol. 2: 2011 pp.168-172
Influence of Seedling Age on the Susceptibility of Tomato Plants to Ralstonia solanacearum during Protray Screening and at Transplanting  [PDF]
Pious Thomas, Reshmi Upreti
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.512190
Abstract:

The study was undertaken to assess whether seedling age played any role in governing the vulnerability of tomato to the bacterial wilt pathogen, Ralstonia solanacearum, based on the preliminary observations that the extent of mortality during seedling-stage screening was relatively less in older seedlings. Employing the virulent strain ‘NH-Av01’ isolated from tomato, 2-, 3-, 4- or 5-week-old seedlings of susceptible ‘Arka Vikas’ raised in organic cocopeat in 98 cavity protrays were inoculated with the pathogen through root-injury inoculation approach. Disease symptoms appeared earlier and with more severity in 2-week-old seedlings followed by 3-, 4- and 5-week-old saplings recording 74%, 68%, 63% and 49% mortality, respectively, after four weeks of inoculation suggesting that older the seedlings, less the susceptibility to the pathogen. The growth characteristics of seedlings (shoot height, shoot and root weights) showed a significant increase with seedling age (0.21, 0.54, 1.14 and 2.09 g gross weight/seedling at 2, 3, 4 and 5 weeks, respectively) indicating healthier saplings with delay in inoculation time. In subsequent trials, seedlings of 3, 4, 5 or 6 weeks were transplanted to field-sick soil in protrays or in pots with monitoring for 1 - 4 months which indicated a significant reduction in disease incidence and severity with increase in seedling age. The observations suggested that seedling age should be considered as a major factor influencing the susceptibility of tomato seedlings to R. solanacearum with the chances of variations in the extent of disease incidence or inconsistent results during seedling-stage screening and the possibility of escapes with older seedlings. Two-week seedlings formed the best when the aim is to induce maximum disease incidence, while transplanting at 5 - 6 weeks stage appeared the best when the objective is minimal disease incidence or formulating disease management strategies.


Testing of Bacterial Endophytes from Non-Host Sources as Potential Antagonistic Agents against Tomato Wilt Pathogen Ralstonia solanacearum  [PDF]
Pious Thomas, Reshmi Upreti
Advances in Microbiology (AiM) , 2014, DOI: 10.4236/aim.2014.410071
Abstract:

The study was taken up with the objective of testing whether the endophytic organisms isolated from crops that are normally non-hosts to the bacterial wilt pathogen Ralstonia solanacearum possessed pathogen-antagonistic activity and to evaluate the selected isolates for the alleviation of wilt disease in the target tomato crop through horizontal movement of promising organisms. Sixteen endophytic bacteria (EB) isolated from the micropropagated cultures of grape, watermelon and papaya were tested for potential antagonistic effects against R. solanacearum tomato isolate “NH-01” through agar-well diffusion assay. Enterobacter cloacae from papaya (EB-11) displayed the maximum antagonistic effect followed by Bacillus subtilis (EB-06) and B. flexus (EB-07) from watermelon and B. pumilus (EB-02) from grape. Testing the above organisms for crop protection through seed fortification of susceptible tomato cv. Arka Vikas at sowing in R. solanacearum inoculated (Ral+) organic cocopeat showed EB-02 and EB-11 promising (33% and 32% survival, respectively, four weeks after sowing against 15% in Ral+ control). A second trial showed 37%, 28%, 21% and 55% seedling survival 6 weeks after sowing for EB-02, EB-06, EB-07 and EB-11 respectively, compared to 2.5% in non-treated control. Assessing the four endophytes for crop protection in

`CodeAliker' - Plagiarism Detection on the Cloud
Nitish Upreti
Computer Science , 2012,
Abstract: Plagiarism is a burning problem that academics have been facing in all of the varied levels of the educational system. With the advent of digital content, the challenge to ensure the integrity of academic work has been amplified. This paper discusses on defining a precise definition of plagiarized computer code, various solutions available for detecting plagiarism and building a cloud platform for plagiarism disclosure. 'CodeAliker', our application thus developed automates the submission of assignments and the review process associated for essay text as well as computer code. It has been made available under the GNU's General Public License as a Free and Open Source Software.
Clinical breast cancer and estrogen
HK Chew
Breast Cancer Research , 2003, DOI: 10.1186/bcr677
Abstract:
'CodeAliker' - Plagiarism Detection on the Cloud
Nitish Upreti,Rishi Kumar
Advanced Computing : an International Journal , 2012,
Abstract: Plagiarism is a burning problem that academics have been facing in all of the varied levels of the educational system. With the advent of digital content, the challenge to ensure the integrity of academic work has been amplified. This paper discusses on defining a precise definition of plagiarized computercode, various solutions available for detecting plagiarism and building a cloud platform for plagiarism disclosure. ‘CodeAliker’, our application thus developed automates the submission of assignments and the review process associated for essay text as well as computer code. It has been made available under the GNU’sGeneral Public License as a Free and Open Source Software.
Correlation Statistics for cDNA Microarray Image Analysis
Radhakrishnan Nagarajan,Meenakshi Upreti
Quantitative Biology , 2005,
Abstract: In this report, correlation of the pixels comprising a microarray spot is investigated. Subsequently, correlation statistics namely: Pearson correlation and Spearman rank correlation are used to segment the foreground and background intensity of microarray spots. The performance of correlation-based segmentation is compared to clustering-based (PAM, k-means) and seeded-region growing techniques (SPOT). It is shown that correlation-based segmentation is useful in flagging poorly hybridized spots, thus minimizes false-positives. The present study also raises the intriguing question of whether a change in correlation can be an indicator of differential gene expression.
Qualitative Assessment of Gene Expression in Affymetrix Genechip Arrays
Radhakrishnan Nagarajan,Meenakshi Upreti
Quantitative Biology , 2006, DOI: 10.1016/j.physa.2006.06.004
Abstract: Affymetrix Genechip microarrays are used widely to determine the simultaneous expression of genes in a given biological paradigm. Probes on the Genechip array are atomic entities which by definition are randomly distributed across the array and in turn govern the gene expression. In the present study, we make several interesting observations. We show that there is considerable correlation between the probe intensities across the array which defy the independence assumption. While the mechanism behind such correlations is unclear, we show that scaling behavior and the profiles of perfect match (PM) as well as mismatch (MM) probes are similar and immune to background subtraction. We believe that the observed correlations are possibly an outcome of inherent non-stationarities or patchiness in the array devoid of biological significance. This is demonstrated by inspecting their scaling behavior and profiles of the PM and MM probe intensities obtained from publicly available Genechip arrays from three eukaryotic genomes, namely: Drosophila Melanogaster, Homo Sapiens and Mus musculus across distinct biological paradigms and across laboratories, with and without background subtraction. The fluctuation functions were estimated using detrended fluctuation analysis (DFA) with fourth order polynomial detrending. The results presented in this study provide new insights into correlation signatures of PM and MM probe intensities and suggests the choice of DFA as a tool for qualitative assessment of Affymetrix Genechip microarrays prior to their analysis. A more detailed investigation is necessary in order to understand the source of these correlations.
Impact of Tandem Repeats on the Scaling of Nucleotide Sequences
Radhakrishnan Nagarajan,Meenakshi Upreti
Quantitative Biology , 2005,
Abstract: Techniques such as detrended fluctuation analysis (DFA) and its extensions have been widely used to determine the nature of scaling in nucleotide sequences. In this brief communication we show that tandem repeats which are ubiquitous in nucleotide sequences can prevent reliable estimation of possible long-range correlations. Therefore, it is important to investigate the presence of tandem repeats prior to scaling exponent estimation.
Les annales de génétique et de sélection animale: un bilan des cinq premières années
JJ Lauvergne, HK Geringer
Genetics Selection Evolution , 1974, DOI: 10.1186/1297-9686-6-1-159
Abstract:
第1頁/共185條
每頁顯示


Home
Copyright ? 2008-2017 Open Access Library. All rights reserved.

久草在现在线中文字幕