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Pulmonary tuberculosis (PTB) infection in children is difficult to diagnose. To evaluate the effectiveness of fiberoptic bronchoscopy in the diagnosis of PTB. Four hundred twenty-two children underwent bronchoscopic evaluation. The study population was composed of 80 children (study group) who were suspected of having PTB and 342 children with chronic cough or recurrent/persistent pneumonia (control group). Videotape reviews of each bronchoscopy were correlated with the results of smears and cultures. The majority of children in the study group (54 of 80 children) were new immigrants from Ethiopia, while most of the control group (323 of 342 children) were born in Israel. Among patients in the control group, physical anomalies such as laryngotracheomalacia were more common among children in the control group (105 of 342 children) compared with those in the study group (5 of 80 children; p < 0.03). In the study group, external compression of the right main bronchus, usually at the entrance, was more common (32 of 80 children) compared with the control group (6 of 342 children; p < 0.001). Cultures from BAL fluid revealed Mycobacterium tuberculosis in 3 of the 80 children from the study group compared with 2 children from the control group (p < 0.08). The children with positive cultures from the control group had external compression of the right main bronchus that had been documented by bronchoscopy. Bronchoscopy in children with suspected PTB has a low yield and does not significantly aid bacteriologic confirmation. External compression at the entrance to the right main bronchus is suggestive of PTB infection.

Feeding rates were determined for S. elegans feeding in Vineyard Sound, Massachusetts, at a temperature of 0°C by applying a digestion time (10.2 h), obtained from laboratory observations, to an analysis of gut contents. The specific daily ration of large individuals was about 1–2% of body dry wt·d−1, that of small chaetognaths (3.5 mm) was about 46%. Feeding rates for all but the smallest animals are similar to those predicted from respiration data; the smallest individuals consumed more than their estimated no‐growth requirements.

The benthic Spadella schizoptera and the planktonic Sagitta hispida both attacked a fine vibrating glass probe over a broad range of frequencies after being starved for 1–3 days. The response curve for S. schizoptera had a peak at 30 Hz and was similar in shape but far broader than that found by prior workers for Spadella cephaloptera. Sagitta hispida responded differently, with a peak response at 150 Hz and no apparent preference among lower frequencies. It also had a strong (37%) response to nonvibrating lateral sweeps. Neither species would attack the probe at a distance >3 mm. This extremely short attack distance was confirmed, for S. hispida, in a 50‐liter aquarium by a series of feeding experiments, the results from which were applied to a simple model. Sagitta hispida starved for 1 day searched 2,667 mm3 min−1 and had an attack distance of 0.88 mm. These experimental data were used to determine the ability of S. hispida to sustain itself nutritionally in its natural environment.

The abundance of 4 levels of the lower Chesapeake Bay food chain (Chlorophyll a, herbivores, ctenophore Mnemiopsis leidyi, and Scyphomedusa Chrysaora quinquecirrha) were monitored twice weekly at 4 stations from May 10 through Sep 30, 1982 in the Lafayette and Elizabeth Rivers (Virginia). The herbivore standing stock, largely copepods, declined sharply in late May when M. leidyi appeared, but rebounded a month later when C. quinquecirrha medusae reduced the ctenophore population. Despite the additional presence of Aurelia aurita (Scyphomedusa) from Jul onward, herbivore abundance remained at moderate levels until the end of the study period. Phytoplankton abundance fluctuated and may have been responsible for brief periods of food shortage; however, the major periods of low herbivore abundance do not seem to have been kept low by food limitation. M. leidyi made a modest resurgence in late Aug when the C. quinquecirrha population underwent its seasonal decline. Our data suggest that C. quinquecirrha contributes to the secondary productivity of the lower Chesapeake Bay by controlling M. leidyi during summer.

Feeding rates were determined for S. elegans feeding in Vineyard Sound, Massachusetts, at a temperature of $O^\\circC$ by applying a digestion time (10.2 h), obtained from laboratory observations to an analysis of gut contents. The specific daily ration of large individuals was about 1-02% of body dry wt · d-1, that of small chaetognaths (3.5 mm) was about 46%. Feeding rates for all but the smallest animals are similar to those predicted from respiration data; the smallest individuals consumed more than their estimated no-growth requirements.

The initial reaction from sales was \"Why are you asking these people for personal guarantees?\" We explained that's not what we were doing. Because of the success we were able to show in collecting because of UCCs, sales avoided losing out on commissions because of bad debt.

A few Sundays ago, I watched \"60 Minutes\" with more than the interest of a casual observer. That was the controversial show where Dr. Jack Kevorkian proudly demonstrated how he euthanized (the prosecutor says murdered) 52-year-old Thomas Youk of Oakland County, Mich. Youk was suffering from ALS, also known as Lou Gehrig's disease.

A few Sundays ago, I watched \"60 Minutes\" with more than the interest of a casual observer. That was the controversial show where Dr. Jack Kevorkian proudly demonstrated how he euthanized (the prosecutor says murdered) 52-year-old Thomas Youk of Oakland County, Mich. Youk was suffering from ALS, also known as Lou Gehrig's disease.

A few Sundays ago, I watched \"60 Minutes\" with more than the interest of a casual observer. That was the controversial show where Dr. Jack Kevorkian proudly demonstrated how he euthanized (the prosecutor says murdered) 52-year-old Thomas Youk of Oakland County, Mich. Youk was suffering from ALS, also known as Lou Gehrig's disease.

A few Sundays ago, I watched \"60 Minutes\" with more than the interest of a casual observer. That was the controversial show where Dr. Jack Kevorkian proudly demonstrated how he euthanized (the prosecutor says murdered) 52-year-old Thomas Youk of Oakland County, Mich. Youk was suffering from ALS, also known as Lou Gehrig's disease.