Strain improvement

Xem 1-20 trên 25 kết quả Strain improvement
  • An industrial clavulanic acid (CA) overproducer Streptomyces clavuligerus strain, namely DEPA, was engineered to further enhance its CA production. Single or multiple copies of ccaR, claR (pathway-specific activators), and cas2 (CA synthase) genes under the control of different promoters were introduced into this strain.

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  • A greenhouse experiment was conducted to observe the effects of Bacillus megaterium strain TV-91C, Pantoea agglomerans strain RK-92, and B. subtilis strain TV-17C inoculation on the growth, nutrient, and hormone content of cabbage seedlings.

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  • Over the last few decades the prevalence of studies about probiotics strains has dramatically grown in most regions of the world. The use of probiotics strains in animals production may reduce several problems caused by antibiotics therapy, growth promoter and problems from inadequate management. Probiotics are specific strains of microorganisms, which when served to human or animals in proper amount, have a beneficial effect, improving health or reducing risk of get sick. This book provides the maximum of information for all that need them trying with this to help many people at worldwide....

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  • With the introduction of genetic engineering of Escherichia coli by Cohen, Boyer and co-workers in 1973, the way was paved for a completely new approach to optimisation of existing biotech processes and development of completely new ones. This lead to new biotech processes for the production of recombinant proteins, e.g. the production of human insulin by a recombinant E. coli.

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  • The FAO projects, through supporting virological surveillance, assisted identifying in Pakistan the Asia-1 strain not matched to the Shamir vaccine; the early warning to WELNET assisted when the first evidence of spread to the west was detected, and willingness to share isolates assisted in vaccine development (FMD Institute Ankara) for local use. The Roadmap assessment and peer review system has encouraged reporting of serological findings but FMD remains highly sensitive and the move towards open and transparent reporting of findings across the region is a challenge. ...

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  • Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí hóa hoc quốc tế đề tài : Improving the emission efficiency of MBE-grown GaN/AlN QDs by strain control

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  • After reading this chapter, you should be able to answer the following questions: What is stress, and how is it different than stressors and strains? What are the four main types of stressors? How do individuals cope with stress? How does the Type A Behavior Pattern influence the stress process? How does stress affect job performance and organizational commitment? What steps can organizations take to manage employee stress?

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  • GTP cyclohydrolase II catalyzes the first dedicated step in the biosynthesis of riboflavin and appears to be a limiting factor for the production of the vitamin by recombinantBacillus subtilisoverproducer strains. Using error-prone PCR amplification, we generated a library of theB. subtilis ribA gene selectively mutated in the GTP cyclohydrolase II domain.

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  • In this study, the calcite precipitation bacteria were investigated. Bacterial strains were isolated from cement samples and were tested for urease activities, potential to form endospore and calcite precipitation. The results showed that four candidates were isolated with high urease activities and calcite precipitation.

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  • Several agencies and organizations have intensified their efforts to increase the productivity of land in these countries.They have introduced new strains of seed, improved irrigation techniques, and introduced new methods of fertilization and soil management.With ample sunlight for photosynthesis and modern irrigation techniques, sustainable farming techniques should allow farmers to boost aggregate production in order to meet demand.

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  • Over the last few decades the prevalence of studies about probiotics strains has dramatically grown in most regions of the world. Probiotics are specific strains of microorganisms, which when served to human or animals in proper amount, have a beneficial effect, improving health or reducing risk of getting sick and the probiotics are used in production of functional foods and pharmaceutical products.

    pdf654p camchuong_1 10-12-2012 165 64   Download

  • Since the first edition of this handbook, semiconductor technology has gone through a continued evolution of new devices and materials like never before. Wafer sizes continue to grow with most of the new fabs equipped for 12-inch wafers. The changes are triggered by many considerations: continued need to provide more functions at lower cost; technology features less than 1000 Å requiring new processes, and exponential increase in the number of device elements.

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  • Fracture mechanics is the field of mechanics concerned with the study of the propagation of cracks in materials. It uses methods of analytical solid mechanics to calculate the driving force on a crack and those of experimental solid mechanics to characterize the material's resistance to fracture.In modern materials science, fracture mechanics is an important tool in improving the mechanical performance of materials and components.

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  • New electromechanical transducers with high energy output, high strains, high mechanical compliance, lightweight, damage-tolerance and low cost can enable needed advances in a variety of applications, such as robotics, automation and biomedical devices. The perceived need for improved transducer performance, which has progressively emerged in the last few decades, has drawn considerable efforts for the development of devices relying on materials with intrinsic transduction properties.

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  • Objective of topic To conduct research on some biological characters of strains of King Oyster and Yunzhi mushrooms to identify best developing strains in climatic condition of Vietnam, and at the same time, to set up spawn production technologies for mushroom strains of liquid spawn in order to improve production efficiency for edible and medicinal mushrooms

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  • The clinical microbiology laboratory is often a sentinel for the detection of drug resistant strains of microorganisms. Standardized protocols require continual scrutiny to detect emerging phenotypic resistance patterns. The timely notification of clinicians with susceptibility results can initiate the alteration of antimicrobial chemotherapy and improve patient care. It is vital that microbiology laboratories stay current with standard and emerging methods and have a solid understanding of their function in the war on infectious diseases. ...

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  • Biological solution using strain Lipomyces starkeyi 7.1, which can produce viscous membranes to improve dry soil is considered to be sustainable for slope land improvement. The results of research on Lipomycin M ability to keep effective water in the soil of Me Linh District, Vinh Phuc Province show that in the soil samples cultivated traditional medicinal trees, the total amounts of effective water in the soil fertilized Lipomycin M (taken out under pressure pF 2.5-4.

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  • Critics of the flares in the Niger-Delta have said that the Nigerian government puts profit ahead of the environmental safety and the welfare of its citizens. The harmful effects of gas flaring and inability of the oil companies and government to quantify the resultants effects of gas flaring on the environment has led to strain relationship between the oil producing companies and the people of Niger-Delta Area of Nigeria.

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  • Female Sexual Dysfunction: Treatment General An open discussion with the patient is important as couples may need to be educated about normal anatomy and physiologic responses, including role of orgasm in sexual encounters. Physiologic changes associated with aging and/or disease should be explained. Couples may need to be reminded that clitoral stimulation rather than coital intromission may be more beneficial. Behavioral modification and nonpharmacologic therapies should be a first step. Patient and partner counseling may improve communication and relationship strains.

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  • Kataoka et al. AMB Express 2011, 1:10 ORIGINAL Open Access Development of butanol-tolerant Bacillus subtilis strain GRSW2-B1 as a potential bioproduction host Naoya Kataoka1, Takahisa Tajima1, Junichi Kato1, Wanitcha Rachadech2 and Alisa S Vangnai 2,3* Abstract As alternative microbial hosts for butanol production with organic-solvent tolerant trait are in high demands, a butanol-tolerant bacterium, Bacillus subtilis GRSW2-B1, was thus isolated.

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