1,720,961 research outputs found
PHYSIOLOGICAL BEHAVIOUR AND YIELD PERFORMANCE OF HYBRID RICE VARIETIES IN AEROBIC AND ANAEROBIC CONDITIONS
Full text linkA Thesis
Submitted to the Department of Agricultural Botany
Sher-e-Bangla Agricultural University, Dhaka, in partial
fulfillment of the requirements
for the degree
of
MASTER OF SCIENCE
IN
AGRICULTURAL BOTANY
SEMESTER: JANUARY-JUNE, 2015The experiment was conducted at the Research Farm of Sher-e-Bangla Agricultural University, Dhaka from November, 2015 to May, 2016 to study the physiological behaviour and yield performance of hybrid rice varieties in aerobic and anaerobic conditions. The experiment was comprised of two factors- 1)System of cultivation: three (3) viz. Low land transplant (anaerobic) condition, Raised upland (aerobic) condition, and Raised transplant (aerobic) condition, and (2) Variety: five (5) viz. BRRI hybrid dhan3, Bolaka, Moina, Gold and BRRIdhan45. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Significant variation was observed on growth, yield and yield contributing parameters. All the studied hybrid varieties showed superiority in respect of physiological characters, yield and yield attributes in anaerobic condition over aerobic condition. BRRI hybrid dhan3 accumulated the highest amount of chlorophyll (2.47 mg g-1) in its flag leaves at anaerobic condition which was at par with Bolaka and BRRI dhan45 contained the minimum chlorophyll (1.83 mg g-1) at raised transplant condition. BRRI hybrid dhan3 showed the highest leaf area index (4.25),while the minimum leaf area index was found in BRRIdhan45 (3.56). The highest (34.97%) shoot reserve translocation was exhibited by BRRI hybrid3 and closely followed by Gold at low land transplant condition. The minimum shoot reserve translocation was recorded from BRRIdhan45(7.78%) at raised transplant condition. The highest grain dry matter accumulated from current photosynthesis (85.87 %) was achieved from BRRI hybrid3at low land transplant condition andthe lowest was recorded from BRRI dhan45 (70.67%) at raised transplant condition.BRRI hybrid dhan3 provided the highest grain yield (8.05t ha-1) at low land transplant condition due to its higher filled grains panicle-1 and 1000 grain weight, and the lowest (4.28tha-1) was obtained from BRRIdhan45 atraised transplant condition
Tap Water Disinfection in the Electrochemical Precipitation Process by Using Novel Conductive Concrete
Full text linkElectrochemical precipitation (EP) is tested to learn about its impact on disinfectants in tap water. The EP process involves applying electricity through electrodes submerged in water to precipitate dissolved metals like water hardness out without chemical additives. In the study, tap water was tested to learn about EP’s impact on disinfectants. Tap water contains not only hardness but also residual disinfectants. It is very essential for the safety of drinking water against the potential ingress of pathogens before the water reaches the end-users. USEPA mandates that the free chlorine level in drinking water should be 0.2mg/L to 4 mg/L. Since pH near the electrodes changes during the electrochemical precipitation (EP) process, the chemical composition of chlorine species may change as well. In conventional EP, sacrificial metallic cathodes are widely used. Instead, a newly developed conductive concrete block is used in this study. Conductive concrete blocks are made of concrete and conductive graphite flakes. Total and free chlorine concentrations in tap water during the EP process will be collected per different chloride concentrations, current density, treatment time, and pH. Preliminary research findings showed that an increase in the chloride concentration, time, and current density resulted more free chlorine disinfectant concentration in water. This study will introduce a novel hardness removal method, EP with conductive concrete, and provide preliminary proof of its added value as a disinfecting technolog
An Evaluation of Economic Prospects and Constraints of the Sundarbans - A Rising Tourist Spot in Khulna
Full text linkSundarban is the largest mangrove forest of the earth which covers almost 10000 square kilometers (3,900 sq. mi) in the Northern Bay of Bengal of which 6017 km2 (2323 sq ml) extended through the Khulna division of Bangladesh. Mangrove forests are extremely prolific and diverse ecosystems, providing a comprehensive array of direct ecosystem facilities for inhabitants. Dhaka & Kolkata is the most crowded cities in the world and Sundarban helps the people who lived in those cities from the different natural calamities like cyclone, strong disaster, and their worst effects. Bangladesh is a country where nature has exposed all its beauties. The aesthetic beauty of mountains, a unique ecosystem of the Sundarbans, the amity of mountains and clouds, bright shade of green trees and forests, the vastness of the sea, the world's longest sea beach, archaeological sites, religious places, ample tea gardens have brought the great potential for Bangladesh in the world tourism industry.Though the Sundarbans is one of the three world heritage sites in Bangladesh, it badly lacks proper tourist facilities. Proficient supervision of the tourist economy at any destination not only contributes to the visitors’ experience augmentation but supplements the opportunities available also and guards the atmosphere whilst safeguarding the interest of the host municipal and businesses functioning within it. The main purpose of this study was to find out how to develop the tourism economy in the Sundarbans effectively. Using a comparison with a high-quality visitor's gladness can be confirmed and the impact of tourism on Sundarbans’ atmosphere and to its host municipal can be accomplished.The study found, two main reasons are liable not to fostering the tourism economy in Bangladesh. The first one is the lack of resource constraints and the second is inadequate initiatives from the government to uplift (particularly infrastructural facilities) tourism in the country to make it known to prospective visitors in the world. The study recommends public and private investments and initiatives to foster the potential of the Sundarbans. Keywords: Sundarbans, World Heritage, Tourism Economy, Tourism Products, Growth Trend of Tourism, Public and Private Sector Initiatives Towards Tourism. DOI: 10.7176/RJFA/12-6-01 Publication date:March 31st 202
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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