Organ Culture Research Papers - Academia.edu (original) (raw)
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- Cell Division, Animals, Male, Medical Physiology
- by carlos martinez
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- Health Care, Peru, Tuberculosis, Humans
Food-borne salmonellosis continues to be a major public health concern, and contamination with Salmonella spp. in pre-harvest animal production is considered a primary contributor to this problem. Animal feeds can easily become... more
Food-borne salmonellosis continues to be a major public health concern, and contamination with Salmonella spp. in pre-harvest animal production is considered a primary contributor to this problem. Animal feeds can easily become contaminated during primary production, feed mixing and processing as well as during feeding. Consequently, monitoring and surveillance of feeds and feed ingredients for Salmonella spp. contamination may be useful or necessary in the prevention and control of this organism. Cultural and immunological detection methods for salmonellae have been used or suggested as possible approaches for use in animal feeds. Cultural methods remain advantageous owing to their ability to detect viable bacterial cells, while immunological methods have the capability of detecting nonculturable bacterial cells. Advancements and improvements in both methodologies offer opportunities for eventual routine use of these detection technologies in animal feed assays.
- by Miriam Oron and +1
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- Cytokines, Minerals, Cyclic Voltammetry, Antioxidants
... Ofra Bengio. and David hfenashri. Bruce Maddy-Wehman The frcndamental clash between Islam and Arabism as organized cultures and alfegiances provides the often neglected ideological context of the Iran-Iraq war. Islam and ... 181... more
... Ofra Bengio. and David hfenashri. Bruce Maddy-Wehman The frcndamental clash between Islam and Arabism as organized cultures and alfegiances provides the often neglected ideological context of the Iran-Iraq war. Islam and ... 181 Autumn 1982 Page 2. Maddy-Weitzman ...
Culture exists at multiple levels, ranging from bro ad societal or national cultures to individualized corporate or organizational cultures . Within an organization, culture serves the same function as personality does to the individual... more
Culture exists at multiple levels, ranging from bro ad societal or national cultures to individualized corporate or organizational cultures . Within an organization, culture serves the same function as personality does to the individual -a hidden yet unifying theme that provides meaning, direction, and mobilization. Research on c orporate entrepreneurship has identified cultural obstacles to successful entrepreneurship, and suggested that entrepreneurship requires a culture built around risk, innovation, emotional commitment, autonomy, and empowerment, among others. Individualism-collectivism is a dimen sion of culture at both the societal and organizational levels. Most of the studies focus on individualism as it has been linked to the willingness of people to violate norms and their le vel of achievement motivation, both of which are associated with entrepreneurship, and showed th at entrepreneurship declines the more collectivism is emphasized. Based on these theoreti cal conside...
This article integrates a levels-of-analysis framework into the development and extension of transformational leadership theory. The primary focus of the article is on examining individualized consideration, a key component of... more
This article integrates a levels-of-analysis framework into the development and extension of transformational leadership theory. The primary focus of the article is on examining individualized consideration, a key component of transformational leadership, at three different levels of analysis including the individual, team, and organization culture. Extensions to Bass' 1985 theory of transformational leadership are offered.
Summary Chili pepper is an important horticultural crop that can surely benefit from plant biotechnology. However, although it is a Solanaceous member, developments in plant cell, tissue, and organ culture, as well as on plant genetic... more
Summary Chili pepper is an important horticultural crop that can surely benefit from plant biotechnology. However, although it is a Solanaceous member, developments in plant cell, tissue, and organ culture, as well as on plant genetic transformation, have lagged far ...
Drawing on configuration theory, we develop and test a model which posits that overall firm performance will be influenced by how well the marketing organization’s cultural orientation (i.e., market, adhocracy, hierarchy, or clan)... more
Drawing on configuration theory, we develop and test a model which posits that overall firm performance will be influenced by how well the marketing organization’s cultural orientation (i.e., market, adhocracy, hierarchy, or clan) complements alternative business strategies (i.e., Prospector, Analyzer, Low-Cost Defender, Differentiated Defender) after controlling for other, key firm-level variables. Responses from a sample of senior marketing managers provide partial support for the model and demonstrate that high-performing businesses of one strategy type have a different cultural orientation than high-performing businesses of the other strategy types. And, contrary to previous research, the results of this study show that each of the cultural orientations may play a role in creating superior performance. We conclude with a discussion of the implications for scholars and for managers.
This report presents the location and interpretation of Native American cultural resources on or near Yucca Mountain, Nevada. This work builds on the archaeological reconnaissance and identifications of cultural resources by the Desert... more
This report presents the location and interpretation of Native American cultural resources on or near Yucca Mountain, Nevada. This work builds on the archaeological reconnaissance and identifications of cultural resources by the Desert Research Institute (for a summary, see Pippin and Zerga, 1983; Pippin, 1984). Interpretations provided by Native American Indian people are not intended to refute other scientific studies,
The study of arbuscular mycorrhizal (AM) fungi and the AM symbiosis formed with host plant roots is com- plicated by the biotrophic and hypogeous nature of the mycobionts involved. To overcome this, several attempts have been made during... more
The study of arbuscular mycorrhizal (AM) fungi and the AM symbiosis formed with host plant roots is com- plicated by the biotrophic and hypogeous nature of the mycobionts involved. To overcome this, several attempts have been made during the last three decades to obtain this symbiosis in vitro. The use of root-organ cultures has proved particularly successful. In this review,
Archaeological investigations at the West Tinian Airport in the Commonwealth of the Northern Mariana Islands have revealed evidence of inland forest clearing and associated occupation at approximately AD 1155, near the beginning of the... more
Archaeological investigations at the West Tinian Airport in the Commonwealth of the Northern Mariana Islands have revealed evidence of inland forest clearing and associated occupation at approximately AD 1155, near the beginning of the prehistoric Latte Period. Radiocarbon dated charred Cocos nucifera nutshell from a shallow feature within a thin organic cultural horizon suggests short-term occupation of a low limestone
- by Yunsun Nam
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- Engineering, Physics, Chemistry, Biology
Organizational culture strongly affects the organizational commitment of employees. Healthy organizational culture and environment bounds the employees to that organization which also results in decrease in turnover. Psychology plays a... more
Organizational culture strongly affects the organizational commitment of employees. Healthy organizational culture and environment bounds the employees to that organization which also results in decrease in turnover. Psychology plays a vital role in employee's commitment to the organization. There are many factors of organizational culture which are having direct relation with the employee's commitment. In this research three factors; participative environment, diversity and flexibility are studied with their impact on organization culture. Study carried on sample of 210 employees working in four different organizations. Results of the present study show that participative environment has maximum impact and flexibility is the least influencing factor of the organizational culture.
- by U. Gaspard
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- Pregnancy, Humans, Placenta, Female
Cardiotonic glycosides are extracted mostly from leaves of Digitalis plants. Commercial production of bioactive secondary metabolites by traditional agriculture is an inefficient process and can be affected by climatic and soil... more
Cardiotonic glycosides are extracted mostly from leaves of Digitalis plants. Commercial production of bioactive secondary metabolites by traditional agriculture is an inefficient process and can be affected by climatic and soil conditions. Strategies, based on in vitro culture methods, have been extensively studied to improve the production of specific plant derived chemicals. The aim of the present research was to obtain biomass of D. purpurea using the temporary immersion system (TIS) and to determine the content of cardiotonic glycosides (digitoxin, digoxin and lanatoside C) as secondary metabolites of commercial value for the pharmaceutical industry. Shoots were cultured in 1,000 ml TIS during 28 days. The effect of four immersion frequencies (once every 2, 4, 6, and 12 h) was studied. Biomass accumulation was influenced by immersion frequency. The maximum biomass accumulation (values in respect of fresh and dry weight) was obtained with immersions every 4 h (six immersions per day). HPLC analysis revealed the presence of digoxin and digitoxin for all immersion frequencies. No lanatoside C was detected in the biomass cultured in TIS. Digoxin concentrations varied depending on the frequencies tested. In contrast, the digitoxin content showed no dependency on the immersion frequency. Net production of digoxin and digitoxin per TIS were found to be higher with immersions every 4 h. The best net production of digitoxin and digoxin per TIS were 167.6 and 119.9 μg, respectively. The development of organ culture based on temporary immersion system can be a reliable method for the steady production of biomass for cardiotonic glycosides production, which is reported for the first time for Digitalis genus in this communication.
Neurotrophins exert many biological effects not directly targeted at neurons, including modulation of keratinocyte proliferation and apo- ptosis in vitro. Here we exploit the cyclic growth and regression activity of the murine hair... more
Neurotrophins exert many biological effects not directly targeted at neurons, including modulation of keratinocyte proliferation and apo- ptosis in vitro. Here we exploit the cyclic growth and regression activity of the murine hair follicle to explore potential nonneuronal functions of neuro- trophins in the skin, and analyze the follicular ex- pression and hair growth-modulatory function of BDNF, NT-4, and their
South Asian Americans constitute the fastest growing immigrant group in the United States. Overweight (adults: 38% - 57%, children: 18% - 43%) and obesity (24%) rates in Asian Americans are increasing and not even a single health... more
South Asian Americans constitute the fastest growing immigrant group in the United States. Overweight (adults: 38% - 57%, children: 18% - 43%) and obesity (24%) rates in Asian Americans are increasing and not even a single health education intervention has been designed for this group in this regard. The purpose of this study was to identify culturally-relevant determinants that influence
The study of arbuscular mycorrhizal (AM) fungi and the AM symbiosis formed with host plant roots is com- plicated by the biotrophic and hypogeous nature of the mycobionts involved. To overcome this, several attempts have been made during... more
The study of arbuscular mycorrhizal (AM) fungi and the AM symbiosis formed with host plant roots is com- plicated by the biotrophic and hypogeous nature of the mycobionts involved. To overcome this, several attempts have been made during the last three decades to obtain this symbiosis in vitro. The use of root-organ cultures has proved particularly successful. In this review,