143 research outputs found
Relationship between the social and vocational adjustment of children under the care of the Children's Aid Association
Thesis (M.S.)--Boston University, 1943. This item was digitized by the Internet Archive
A many-channel FPGA control system
We describe a many-channel experiment control system based on a
field-programmable gate array (FPGA). The system has 16 bit resolution on 10
analog 100 MS/s input channels, 14 analog 100 MS/s output channels, 16 slow
analog input and output channels, dozens of digital inputs and outputs, and a
touchscreen display for experiment control and monitoring. The system can
support 10 servo loops with 155 ns latency and MHz bandwidths, in addition to
as many as 30 lower bandwidth servos. We demonstrate infinite-impulse-response
(IIR) proportional-integral-differential (PID) filters with 30 ns latency by
using only bit-shifts and additions. These IIR filters allow timing margin at
100 MS/s and use fewer FPGA resources than straightforward multiplier-based
filters, facilitating many servos on a single FPGA. We present several specific
applications: H\"ansch-Couillaud laser locks with automatic lock acquisition
and a slow dither correction of lock offsets, variable duty cycle temperature
servos, and the generation of multiple synchronized arbitrary waveforms
Normocalcaemic hypoparathyroidism: prevalence and effect on bone status in older women. The OPUS study.
There are no consistent data on the prevalence and bone status of normocalcaemic hypoparathyroidism (NHYPO) as defined by normal adjusted calcium and low PTH level. Our aim was to determine the prevalence and the metabolic bone profile of NHYPO in older women, assessing its evolution over time. The second objective was to evaluate the prevalence of other calcium metabolic disorders
Multiple Endocrine Neoplasia Type 1 with Multiple Leiomyomas Linked to a Novel Mutation in the MEN1 Gene
Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominantly inherited syndrome. MEN1 is characterized by the presence of functioning and nonfunctioning tumors or hyperplasia of the pituitary gland, parathyroid glands, and pancreatic islet cells. In addition, MEN1 carriers can have adrenal or thyroid tumors and non-endocrine tumors, such as lipomas, angiofibromas, and leiomyomas. Although leiomyoma is not a major component of MEN1, it is thought to occur more frequently than expected. However, there has been no report of a case of MEN1 with leiomyoma in Korea so far. This report describes a patient with multiple leiomyomas in MEN1. A 50-year-old woman was referred for further evaluation of elevated calcium levels and osteoporosis. Biochemical abnormalities included hypercalcemia with elevated parathyroid hormone. There was hyperprolactinemia with pituitary microadenoma in sella MRI. An abdominal MRI demonstrated adrenal nodules and leiomyomas in the bladder and uterus. Endoscopic ultrasonography demonstrated esophageal leiomyoma and pancreatic islet cell tumor. A subtotal parathyroidectomy with thymectomy was performed. Sequencing of the MEN1 gene in this patient revealed a novel missense mutation (D350V, exon 7). This is the first case of MEN1 accompanied with multiple leiomyomas, parathyroid adenoma, pituitary adenoma, pancreatic tumor, and adrenal tumor
Bilateral adrenocortical carcinoma in a patient with multiple endocrine neoplasia type 1 (MEN1) and a novel mutation in the MEN1 gene
The incidence of adrenal involvement in MEN1 syndrome has been reported between 9 and 45%, while the incidence of adrenocortical carcinoma (ACC) in MEN1 patients has been reported between 2.6 and 6%. In the literature data only unilateral development of ACCs in MEN1 patients has been reported. We report a 31 years-old female MEN1-patient, in whom hyperplasia of the parathyroid glands, prolactinoma, non functioning pancreatic endocrine carcinoma and functioning bilateral adrenal carcinomas were diagnosed. Interestingly, a not previously described in the literature data, novel germline mutation (p.E45V) in exon 2 of MEN1 gene, was detected. The association of exon 2 mutation of the MEN1 gene with bilateral adrenal carcinomas in MEN1 syndrome, should be further investigated
Colección viajeros del conocimiento
El libro presenta la biografía de Iván P. Pavlov y la generación de teorías para el análisis de la conducta humana, partiendo del estudio de la conducta de los animales, dando un giro en el estudio de la psicología modernaDepartamento Nacional de Ciencia, Tecnología e Innovación - COLCIENCIA
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Rural Housing: Needs, Credit Availability, and Federal Programs
This report summarizes needs and conditions of rural housing in America, as well as the availability of housing credit availability in rural areas and federal programs for rural housing. Some figures and statistics on housing credit availability and federal rural housing programs are provided. The report also analyzes the performance of federal programs for rural housing during the 1974 fiscal year
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