9,400 research outputs found
Range Safety for an Autonomous Flight Safety System
The Range Safety Algorithm software encapsulates the various constructs and algorithms required to accomplish Time Space Position Information (TSPI) data management from multiple tracking sources, autonomous mission mode detection and management, and flight-termination mission rule evaluation. The software evaluates various user-configurable rule sets that govern the qualification of TSPI data sources, provides a prelaunch autonomous hold-launch function, performs the flight-monitoring-and-termination functions, and performs end-of-mission safin
Training Extension Professionals from Developing Countries Through Educational Workshops Conducted in the United States
Many opportunities exist for conducting stateside professional improvement workshops to train Extension professionals from developing countries. To conduct a successful workshop it is important to understand the needs of the partner country and identify participants who can use their workshop training to address those needs. An effective workshop will have high-quality field trips, practical classroom instruction, and opportunities for cultural exchange. Pre-workshop planning and close attention to logistical issues are essential to the success of the workshop. Good evaluation of the workshop is important to measure the impacts of the workshop and provide input for improving future workshops
Synthesis of some new 2-heterosubstituted 4,5-dihydroimidazoles
Several new 4,5-dihydroimidazoles (and the corresponding imidazolium salts) carrying heteroatom substituents at C-2 have been prepared from the corresponding tetrahydroimidazol-2-ones and/or -thiones
Geologic Descriptions and Coal Analyses for 1982 Coal Drilling in the Daniel Boone National Forest, Eastern Kentucky
This report contains core descriptions, lithologic logs, and analyses of coal from 21 stratigraphic test holes drilled in 1982 in the Daniel Boone National Forest, including the Redbird Purchase Unit, in eastern Kentucky.
The test holes ranged in depth from 85 to 1,988 feet and averaged about 700 feet. A total of 89 coal samples were analyzed. Results of analyses (on the as-received basis) showed the following ranges: ash, 2.37 to 28.8 percent; sulfur, 0.3 to 8.4 percent; and Btu, 9,017 to 14,550 per pound
Familial Medullary Thyroid Carcinoma Associated with Cutaneous Lichen Amyloidosis
Background: This is a report of a patient with a novel genotype phenotype relationship of a c804 mutation of the RET proto-oncogene manifesting as medullary thyroid carcinoma (MTC) and cutaneous lichen amyloidosis (CLA). Summary: Clinical data were obtained for patient appearance and laboratory results. Analyzed were histopathology of the skin lesion and thyroid gland, genetic mutation, and family pedigree. Skin histology and histochemistry were consistent with CLA. Serum calcitonin levels were moderately elevated. Thyroid histology demonstrated a 4mm focus of MTC. Measurements of serum parathormone, calcium, and plasma metanephrines were normal. DNA analysis demonstrated a mutation in codon 804 of the RET proto-oncogene resulting in a Valine to Methionine (V804M) substitution. Genetic testing in two siblings revealed the same mutation. Conclusions: This is the first description of a patient with CLA not associated with a mutation in codon 634. The patient is one of the few with a V804M mutation in whom the clinical expression did not fully conform to the definition of familial MTC.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/78146/1/thy.2009.0021.pd
Insulinlike Growth Factor 1- and 2-Augmented Collagen Gel Repair of Facial Osseous Defects
BACKGROUND: Defects of the facial bone structure are common problems for the facial plastic surgeon. Native type 1 collagen gels (T1CGs) have been shown to mediate repair of facial critical-size defects in rat models.
OBJECTIVE: To evaluate the efficacy of T1CG augmented with insulinlike growth factor (IGF) 1, IGF-2, and a combination of IGF-1 and IGF-2 on the repair of facial critical-size defects in a rodent model.
METHODS: Twenty-four retired male breeder Sprague-Dawley rats were divided into 4 groups of 6 animals. Facial critical-size defects were created by removing the nasalis bones with a bone-cutting drill. Defects were treated with 300 pg of type 1 collagen gel (T1CG), T1CG augmented with 3 microg of IGF-1, T1CG augmented with 3 microg of IGF-2, or T1CG augmented with a combination of 3 microg of IGF-1 and 3 microg of IGF-2. After 30 days the animals were examined at necropsy with precise planimetry, histological analysis of new bone growth, and radiodensitometric analysis of bone thickness.
RESULTS: Radiodensitometric measurements showed that IGF-2 augmentation resulted in greatest osseous healing, with measurements being statistically significant over those of all other groups (P\u3c or = .03). Combination IGF-1 and IGF-2 had osseous healing that was intermediate between IGF-1 augmentation and IGF-2 augmentation alone, with measurements being statistically significant over those of unaugmented gels (P
CONCLUSION: Collagen gels augmented with IGF significantly enhance the osteoconductive repair of nasal critical-size defects in a rodent model, with IGF-2 showing highest efficacy
Multinational Activity in the Modern World
Multinational corporations are the global goliaths of modern times. These entities collectively are responsible for large portions of world production, employment, investment, international trade, research, and innovation. Although their economic impact is most pronounced in high-income countries, where their activities have been concentrated historically, their reach increasingly extends to every corner of the world. Decisions made by these firms affect not only those who work for them, buy from them, do business with them, and compete with them, but also communities and countries in which they are located. As a result, their operations and activities are subjects of considerable interest and heated speculation
GLOBAL INTRACORONARY INFUSION OF ALLOGENEIC CARDIOSPHERE-DERIVED CELLS IMMEDIATELY AFTER CORONARY REPERFUSION IMPROVES EJECTION FRACTION AND REMOTE ZONE FUNCTION INDEPENDENT OF CHANGES IN INFARCT VOLUME
- …