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Search Results: 1 - 10 of 1313 matches for " seeds "
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The research progress on food organism culture and technology utilization in crab seed production in ponds in China  [PDF]
Jibing Qi, Xiaolian Gu, Lingbo Ma, Zhenguo Qiao, Kai Chen
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.410076

Eriocheirsinensis, Portunus trituberculatus and Scylla paramamosain are important commercial culture crab species in China. Traditional factory breeding of crabs depends on Artemia nauplius. The rising price of Artemia cysts has led to the decline of the economic benefit of the crab breeding factory. Factory crab breeding has been gradually replaced by pond breeding in recent years. E. sinensis and P. trituberculatus have been bred mainly in ponds. Meanwhile, S. paramamosain is still mainly bred in factories because of the crudeness of pond breeding. The research progress on food organism utilization in the three species of commercially bred crabs was reviewed in this paper. In the workshop seeds production, rotifer and Artemia nauplii were necessary in the early stages from zoea I to zoea II in the three crab species. Adult artemia, minced fish and shellfish were fed to the larvae in the later zoea stages from zoea III to Megalopa. The rising of the price of artemia eggs made people find other feed organism to replace artemia. Copepods have been used in crab seeds production

Forage Legume Seeds Submitted to in Vitro and in Situ Fermentation Techniques  [PDF]
Bruno B. Deminicis, Henrique D. Vieira, Jo?o C. C. Almeida, Saulo A. C. Araújo, Cesar C. Guimar?es Filho, Raphael P. Araújo, Deise D. Castagnara, Deolindo Stradiotti Júnior
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.412A1010

The present study was carried out to evaluate the survival rate of four tropical legume seeds submitted to different periods of ruminal incubation simulated by in vitro and in situ fermentation. The species studied were butterfly pea, stylosanthes, archer and perennial soybean. Four Holstein dairy cows fistulated in rumen were used in the in situ stage. A completely randomized design was used, in a 4 × 6 factorial arrangement (four species, six treatment periods) in the in vitro stage, with four repetitions. A completely randomized block design, arranged in a 4 × 6 factorial scheme (four species × six incubation periods), was used in the in situ stage, with four repetitions. The seeds (50 units of only one species at each repetition) were placed in erlenmeyer flask (250 mL) and were put in a 10 × 15 cm nylon bag in the in vitro stage. The times of incubation were: 6, 12, 24, 48, 96 and 144 hours and the time zero was estimated in the laboratory. The results demonstrate that, when submitted to ruminal incubation, due to their hard and impermeable teguments, legume seeds presented high resistance potential, and, thus, greater chances of germinating after passage through the gastrointestinal tract of

Investigation of the Properties of Fibrous Cotton Seeds, for Sorting on a Mesh Surface  [PDF]
Avazbek Obidov, Khamid Akhmedhodjaev, Olimjon Sarimsakov, Qurbonali Holikov
Engineering (ENG) , 2018, DOI: 10.4236/eng.2018.109041
Abstract: In the article the research of cotton seeds for the purpose of increasing the fiber in the enterprise is investigated, separated from the mass of the derivatives of ginning of fibrous seeds by means of effective cleaning and sorting on the mesh surface.
Comparison between the Use of Loose and Stranded Seeds in Prostate Brachytherapy in Brazil  [PDF]
Fernando S. Peleias Jr., Carlos A. Zeituni, Elisa C. M. Rostelato, Carla D. Souza, Fabio R. Mattos, Marcos A. G. Benega
Open Journal of Urology (OJU) , 2012, DOI: 10.4236/oju.2012.223036
Abstract: Cancer is a leading cause of death worldwide. In 2030, 26.4 million new cases will be diagnosed, with 17 million deaths accounted worldwide. Prostate cancer is the sixth most common type in the world, and the second most commom in men. For Brazil, the number of new cases of prostate cancer in 2010 is estimated to 52,350. Treatment of prostate cancer may be by surgery, radiation or even vigilant observation. A method of radiotherapy which has been extensively used is brachytherapy, where Iodine-125 seeds are placed inside or next to the area requiring treatment. Iodine seeds can be introduced loose seeds or stranded in bioabsorbable polymers in order to increase the dosimetric coverage of the prostate and reducing the chance of seed migration. Data were gathered concerning the commercialization of loose seeds and stranded seeds, between 2005 and 2011, in Brazil. It was noted that the number of stranded seeds commercialized in Brazil (around 80%) has always been much greater than the number of loose seeds, reaching 90% last year. The main reason is the reduction of the seed migration events into other parts of the body, since there is a potential hazard even considering that no harmful effect has been observe. The data regarding dosimetry are still controversial, since the seeds that migrate is normally no more than 1%.
I. Ruban,N. Voropaeva,M. Istomin,M. Kazakova
Albanian Journal of Agricultural Sciences , 2010,
Hybridization Technique in Tartary Buckwheat (Fagopyrum tataricum Gaertn)
Bal K. Joshi,Hari P. Bimb,Kazutoshi Okuno
Nepal Agriculture Research Journal , 2009, DOI: 10.3126/narj.v9i0.11650
Abstract: N/A Nepal Agric. Res. J. Vol. 9, 2009, pp. 118-128 DOI: http://dx.doi.org/10.3126/narj.v9i0.11650 ?
Efecto de la temperatura y la luz en la germinación de semillas de Paspalum guenoarum
Otegui, Mónica Beatriz;Pérez, María Alejandra;Maia, Manoel de Souza;
Revista Brasileira de Sementes , 2005, DOI: 10.1590/S0101-31222005000100024
Abstract: paspalum guenoarum is a forage species recently adapted to the argentine subtropical area, which would offer advantages to producers by covering the seasonal pasture deficiency of the region. adequate methodologies of quality control should be taken into account for seed production and trading. the germination assay is an effective tool to establish the quality of seed lots, but to date, there are no precise specifications for the development of this methodology in p. guenoarum. both temperature and light are determinant in the expression of the maximum germinative potential, but the most favourable magnitudes and regimens must be found for each species. for these reasons, the objective of this study was to establish the adequate temperature and light conditions to evaluate the quality by means of the germination assay in the laboratory. a completely randomised 2 x 2 factor design with four replications of 100 seeds was used. factors were constant temperature at 27oc and alternating temperature at 20-35oc and continuous light and in cycles of 8 h light and 16 h darkness. the germination rate and the germination percentage were determined. the results indicated that the alternating temperature at 20-35oc was the most appropriate to express the germination potential, regardless of the light regime.
Tamanho de amostra para teste de germina??o de Mimosa caesalpiniifolia Benth, espécie nativa da Caatinga
Freitas, Teresa Aparecida Soares de;Mendon?a, Andrea Vita Reis;Freitas, Taiane Pires de;Santana, Silvia Patrícia Barreto;
Revista Ciência Agron?mica , 2011, DOI: 10.1590/S1806-66902011000300018
Abstract: the objective of this work was to define the sample size to germination test of mimosa caesalpiniifolia benth. the experiment was arranged in a completely randomized design, in 6 x 8 factorial, six different seed quantities (20; 25; 30; 50; 70 and 100) and eight numbers of repetitions (3; 4; 5; 6; 7; 8 ; 9 and 10), with five repetitions. were used 20 repetitions for each number of seeds, with drawings to obtain repetitions of each treatment. the germination test was conducted in bod germination, at 30 °c with 12 hours photoperiod, on germitest paper. the characteristics evaluated were: variation index for germination percentage and for germination velocity. the seed number that resulted in a lower variation index for the number six, seven, eight and ten repetitions, ranged from 65 to 79 seeds per repetition. for three and five repetitions was found a tendency of reduction of the variation index for germination percentage with increasing on the number of seeds per repetition, justifying the use for germination test of, at least, six repetitions. for the germination velocity index, the effect was not observed on the number of repetition, on the variation index, while the seed number that resulted in lower variation index, regardless of the number of repetitions was 75 seeds. for the batch of seeds evaluated was recommended the use of six repetitions with the number of seeds per repetition ranging from 65 to 79.
Seed Morphology of Some Species of Indigofera (Fabaceae) from Saudi Arabia (Identification of Species and Systematic Significance)  [PDF]
F. A. Al-Ghamdi
American Journal of Plant Sciences (AJPS) , 2011, DOI: 10.4236/ajps.2011.23057
Abstract: Seeds of 18 species of Indigofera L. were examined with the scanning electron microscope and the light microscope. Macro- and micromorphological characters, including seed shape, colour, size, surface, epidermal cell shape, anticlinal boundaries, outer periclinal cell wall and relief of outer cell walls, are presented. Two types of basic anticlinal cell wall boundaries and two types of relief outer cell walls are recognized and two different shapes of the outer periclinal cell wall are described. A key for the identification of the investigated taxa based on seed characters is provided.
Green Synthesis of Silver Nanoparticles with High Fungicidal Activity from Olive Seed Extract  [PDF]
Habeeb Khadri, Mohammad Alzohairy, Avilala Janardhan, Arthala Praveen Kumar, Golla Narasimha
Advances in Nanoparticles (ANP) , 2013, DOI: 10.4236/anp.2013.23034

Silver nanoparticles in the form of silver based chemicals trace back their origin to time immemorial since the dilute forms of silver nitrate were used in place of antibiotics before they dominated the field of medicine. But, it has now become necessary to explore the anti-microbial properties of silver based chemicals again due to the microbes gaining resistance against the wide range of present day antibiotics. The advancements in the field of medicine and technology started to coalesce to combat the adaptability of microbes as they successfully become tolerant to antibiotics and it manifested in the form a current technology, Nanomedicine. Nanomedicine deals about the medicines at a nano scale to rarefy the intensity of medicine to unaffected tissues and reduce the volume of medicine used. In the present context, our attempt is to develop potential anti-microbial particles in the form of silver nanoparticles by using the biological phenomena which we call Green synthesis an eco-friendly approach to conventional chemical synthesis. The enzymatic machinery of the olive seeds has been exploited to produce silver nanoparticles and test their efficacy as antifungal agents before we characterized their physical properties using UV-Vis, TEM, and FTIR analysis. The efficacy of these particles as antagonists on fungal pathogen Aspergillus niger a causative agent of Aspergillosis in human beings and is promising and they have a lot of scope for the purpose and hope the technology leads the next generation of anti-microbials.

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