Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Robert M. Patterson"'
Publikováno v:
Economics of Education Review. 57:66-79
This paper evaluates the effect of classroom computer use on academic performance. Using a quasi-experimental design and administrative data, we find that computer use in college classrooms has a negative impact on course grades. Our study exploits i
Publikováno v:
Bioelectromagnetics. 29:499-526
Limits on exposures to extremely low-frequency electric fields, magnetic fields and contact currents, designated as voluntary guidelines or standards by several organizations worldwide, are specified so as to minimize the possibility of neural stimul
Publikováno v:
Prenatal Diagnosis. 14:989-992
The Klippel-Trenaunay-Weber syndrome is a complex developmental disorder of the vascular and skeletal systems. While many features of the syndrome are congenital, it has not been diagnosed often before birth. This paper describes a case of Klippel-Tr
Publikováno v:
Prenatal Diagnosis. 13:1027-1030
We report on the prenatal diagnosis of congenital myotonic dystrophy in a case of non-immune hydrops fetalis. DNA analysis of amniocytes revealed expansion of the trinucleotide (CTG) repeat within the myotonin PK gene, associated with myotonic dystro
Publikováno v:
Journal of occupational and environmental hygiene. 6(8)
Electric utility workers may be exposed to any combination of magnetic fields, electric fields, nuisance shocks (from spark discharges and continuous currents), imperceptible contact currents, and electrical injuries. Collectively these exposures are
Publikováno v:
American Journal of Obstetrics and Gynecology. 163:879-882
We compared oral magnesium oxide with oral terbutaline sulfate in a prospective, randomized manner to determine efficacy and side effects. Preterm labor patients whose labor was arrested with parenteral tocolysis were randomized to oral tocolysis wit
Publikováno v:
Journal of occupational and environmental hygiene. 2(2)
Exposure limits for magnetic fields in the extremely low frequency range (3 to 3000 hertz) have been established by a number of organizations. The limits are generally intended to prevent overstimulation of electrically sensitive tissue and are expre
Publikováno v:
American Journal of Obstetrics and Gynecology. 163:748-750
In this prospective study, we sought to examine the changes in umbilical vascular resistance induced by tocolytic therapy. Umbilical artery velocimetry was performed in 46 patients with preterm labor before tocolysis and at 1 hour and 24 hours after
Autor:
Robert M. Patterson, G. Scott Peacock
Publikováno v:
The Journal of the Acoustical Society of America. 134:2363
Techniques include determining coefficients of a complex auto regression (AR) model to fit a complex average spectrum at a base frequency resolution of a set of one or more measured acoustic beams during a time block. Residuals derived by filtering a
Autor:
Stephen G. Ryan, Janet A. Tolworthy, Nancy A. Tedrowe, Robert M. Patterson, Robert F. Stratton, Robert S. Young
Publikováno v:
American journal of medical genetics. 51(2)
We report on a 15-month-old boy with a de novo deletion of the terminal band of 5q, macrocephaly, mild retrognathia, anteverted nares with low flat nasal bridge, telecanthus, minor earlobe anomalies, bell-shaped chest, diastasis recti, short fingers,