摘要:

Eighty bite-wing radiographs from 40 female and 40 male patients were selected from the patient record system at the University of Texas Dental School at San Antonio, Texas. All samples were equally divided into four age groups, with a range from 15 to 55 years of age. The lower right first permanent molar tooth was chosen as the representative tooth for measuring the maximum height and width of the pulp chamber. The reproducibility of the method was checked by repeating all measurements on two different occasions. Regression analysis indicates that the height and width of the pulp chamber were negatively correlated with age (heightr= −0.376 and widthr= −0.125). The coefficient of determination (r2) for pulp chamber height and width were 0.123 and 0.058, respectively. This indicates that although there appears to be a definite relationship between the age of an individual and the height and width of the dental pulp chamber, these measures cannot be used as a reliable method of age determination.

ISSN:0195-7910    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Compared are two great and remarkably similar battles that occurred less than 3 years apart: the U.S. Cavalry versus the Plains Indians in the battle at the Little Bighorn in Montana Territory of the United States, and the British-Zulu battle at Isandhlwana in the Natal Province of South Africa. Computer evaluation, which was especially helpful in evaluating artifacts at the Montana site, could be an excellent tool to use in other such large-scale investigations.

ISSN:0195-7910    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Two cases of methane asphyxia occurring in two boys (age 11 and 12 years) who were found at the bottom of a 37-ft (11.1-m)-deep sewer shaft are described. Attempted resuscitation of the first patient was unsuccessful and achieved only temporary stabilization of the second, who died 48 h after his discovery. Autopsies revealed relatively minor multifocal traumatic injuries, with evidence of hypoxic-ischemic encephalopathy in the patient who survived for 2 days. Subsequent analysis of gas in the shaft revealed 21% oxygen at the surface. 14.3% at a depth of 5 ft (1.5 m), and only 4.8% at depths of 10 ft (3 m) and below. Other gases detected at the lower levels were methane, nitrogen, and carbon dioxide (4.3%). These cases demonstrate the value of atmospheric gas analysis in cases of possible methane asphyxia in confirming the presence of methane and in demonstrating levels of oxygen below that necessary to support life.

ISSN:0195-7910    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

We report a case of a sudden death in a SCUBA diver working at a water treatment facility. The victim, an employee of the facility with a specialty in electronics, was a sport diver not qualified in commercial diving. While attempting to clean sludge from a blocked drain 25 ft under water, the diver was suddenly pinned against the drain valve when the sludge plug was broken up. We review the mechanics of the incident and the actual cause of death, asphyxia, as opposed to drowning. We believe this to be the first reported case of traumatic (pressure) asphyxia in a SCUBA diver.

ISSN:0195-7910    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Traditional genetic marker systems rarely fail to resolve paternity disputes when two or more men are accused, except when men are brothers. A sibling of the biologic father may not be excluded by these laboratory tests and sometimes yields calculated odds of paternity that are equal to or higher than the true male parent. Resolved two-brother cases were compared with resolved cases involving two unrelated men. In each case, the residual odds of paternity were determined for each man and the greater was divided by the lesser to produce a paternity fraction. The paternity fraction is a useful indicator of biologic parentage when it exceeds a value of 10 (log10of-the-odds score ≥1). Tests for alleles at highly heterozygous loci are indicated in initial laboratory evaluations of cases involving brothers. Human leukocyte antigen and variable number of tandem repeat polymorphisms appear suitable.

ISSN:0195-7910    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

A method for the detection of cyanide in whole blood specimens uses CYANTESMO test paper (Macherey-Nagel, Düren, Germany) allowing rapid, semiquantitative screening for suspected cyanide poisoning.

ISSN:0195-7910    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

The problem of evaluating injury in childhood as to causation—accidental, inflicted or other—is compounded by conflicting literature. The child presenting with head injury following a short distance fall should be a source of alarm. Some of the key thoughts in the literature are evaluated with presentation of some additional observations, in an attempt to sort out some apparent conflicts.

ISSN:0195-7910    

出版商:OVID    

年代:1992

数据来源: OVID

ISSN:0195-7910    

出版商:OVID    

年代:1992

数据来源: OVID