126
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Saunders DA, Smith GT, Rowley I. The availability and dimensions of tree hollows that provide nest sites for cockatoos (Psittaciformes) in Western Australia. WILDLIFE RESEARCH 1982. [DOI: 10.1071/wr9820541] [Citation(s) in RCA: 120] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A 15-ha plot of salmon gum woodland contained 241 hollows with an entrance diameter and depth exceeding 90 mm, in 173 trees, the majority (95%) in salmon gums. Occupancy of these hollows during the spring of 1978 was 47%; eight species of bird (six Psittaciformes, one Anseriformes and one Falconiformes) were involved. Galahs, corellas, red-tailed black cockatoos and Port Lincoln parrots were the most numerous hollow-nesting birds in the area; there were differences in the sizes of hollows they used, which were separable on entrance size and on inside diameter of the hollow 0.5 m below the entrance. There was a trend for hollow size to decrease in the order: red-tailed black cockatoos, corellas, galahs and Port Lincoln parrots. Red-tailed black cockatoos nested in more dead trees, or trees which were lower and had smaller canopies, than did the other three species. The woodland contained few young trees, trees were dying rapidly and there was no regeneration. This situation is typical for woodland throughout the agricultural area, and future prospects are discussed.
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127
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Smith GT, Geary GG, Blanchard W, McNamara JJ. Reduction in infarct size by synchronized selective coronary venous retroperfusion of arterialized blood. Am J Cardiol 1981; 48:1064-70. [PMID: 7304456 DOI: 10.1016/0002-9149(81)90321-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The effectiveness of selective synchronized pulsatile coronary venous retroperfusion for the temporary metabolic support of a region of acutely ischemic myocardium has previously been demonstrated. This study was designed to determine the degree of reduction in ultimate infarct size that may be achieved when coronary venous retroperfusion initiated early after coronary occlusion is combined with later anterograde reperfusion. In 10 baboons, the proximal left anterior descending coronary artery was occluded for 4 hours at which time anterograde reperfusion was restored. In five baboons (Group A), coronary venous retroperfusion was initiated 15 minutes after occlusion. Five baboons (Group B) underwent an identical procedure without coronary venous retroperfusion. Epicardial electrograms were recorded from 24 sites overlying the ischemic region. At 24 hours, hearts were excised and serial transverse sections of the left ventricle were stained with nitroblue tetrazolium for stereometric determination of infarct size. In Group A 12 +/- 5.4 percent (mean +/- standard error of the mean) of epicardial sites with S-T segment elevation at 15 minutes after occlusion showed subsequent Q waves, compared with 96 +/- 2.3 percent in Group B (p less than 0.01). In Group A 4.8 +/- 1.7 percent of the left ventricular mass was infarcted, compared with 30.6 +/- 4.2 percent in Group B (p less than 0.01). The results demonstrated the effectiveness of coronary venous retroperfusion in preserving ischemic myocardium such that anterograde reperfusion resulted in a mean reduction of 84 percent in ultimate infarct size.
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128
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Geary GG, Smith GT, McNamara JJ. Defining the anatomic perfusion bed of an occluded coronary artery and the region at risk to infarction. A comparative study in the baboon, pig and dog. Am J Cardiol 1981; 47:1240-7. [PMID: 7234698 DOI: 10.1016/0002-9149(81)90253-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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129
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McNamara JJ, Lacro RV, Yee M, Smith GT. Hemorrhagic infarction and coronary reperfusion. J Thorac Cardiovasc Surg 1981; 81:498-501. [PMID: 7206756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Coronary ligation experiments were performed on 23 primates. Some of the experiments were followed by reperfusion after periods of occlusion of from 1 to 6 hours. Hemorrhage into the infarct was noted in all animals and was greatest following reperfusion after 4 hours of occlusion or longer. Hemorrhage increases the measured infarct size to the point that it is actually larger than that seen with ligation alone. However, this increase is accounted for by the larger amount of intramyocardial hemorrhage. Hemorrhage is greatest in the center of the infarct and decreases at the margins. It appears that hemorrhage occurs into necrotic muscle and does not occur significantly at the margins of the infarct where damage to otherwise viable myocardium might result.
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130
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Ruf W, Smith GT, Geary G, Pressler V, Anema RJ, Suehiro A, McNamara JJ. Effect of left ventricular--to--aortic bypass on infarct size and infarct microcirculation in baboons. J Thorac Cardiovasc Surg 1981; 81:408-18. [PMID: 7464204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A major diagonal branch of the left anterior descending coronary artery (LAD) was acutely occluded in 17 baboons. Complete left ventricular (LV) decompression was achieved with a left heart bypass (LHB) system in six baboons while 11 baboons served as untreated controls. In the treated group, LHB was initiated after 30 minutes of coronary occlusion. For a period of 6 hours after occlusion, aortic pressure, LV pressure, left atrial pressure, and cardiac output were monitored. During the same monitoring period, electrograms were recorded from a high resolution matrix of fixed epicardial electrodes. Regional myocardial blood flow was determined prior to and at intervals following the initiation of LHB with radioactive microspheres. Infarct size was assessed histologically from serial cross sections of the left ventricle. The degree of salvage achieved by LHB was assessed by comparing the epicardial area of infarction 6 hours after occlusion (AI) to the area of epicardial St-segment elevation (STE) 30 minutes after occlusion (maxAST). In the LHB-treated group, 40.0% +/- 8.1% (SEM) of maxAST showed subsequent infarction; in the control group, 79.8% +/- 2.7% of maxAST showed eventual infarction (p less than 0.01). STE overlying the region of ischemia in the LHB-treated group did not undergo the spontaneous decline observed in the control group, which is normally associated with the progression of necrosis. Regional myocardial blood flow did not change significantly in the ischemic region during the period of occlusion following LHB. LHB. The results suggest that LHB is capable of substantial salvage of acutely ischemic myocardium by reducing myocardial work and thus reducing myocardial oxygen requirements.
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131
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Saunders DA, Smith GT. Egg Dimensions and Egg Weight Loss during Incubation in Five Species of Cockatoo, and the Use of Measurements to Determine the Stage o Incubation of Birds' Eggs. WILDLIFE RESEARCH 1981. [DOI: 10.1071/wr9810411] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The linear dimensions are presented of 302 eggs of 5 species of cockatoo (Cacatuidae : Psittaciformes)
occurring in the south-west of Western Australia: red-tailed black cockatoo, white-tailed black cockatoo,
long-billed corella, little corella and galah. Forty-four of the eggs were weighed throughout incubation
and, by means of the calculated regression lines for loss of weight on time of incubation, the weight
at laying of each of these eggs was determined. The weight constant Kw, was determined for each
egg by the formula: Kw= W/LB*2; its mean value was 0.554�0.015. Weights at laying of the entire
sample of eggs were calculated by use of this value of Kw, the daily loss of weight during incubation
was determined, and a general formula based on linear measurements and weight derived for determining
the stage of incubation of birds' eggs. This is:
T = [(KwLB*2) - Wt]/[a(KwLB*2)*b],
where T is the number of days of incubation; Wt is the known weight of the egg at time T; L, B
are the length and diameter of the egg in centimetres; and Kw, a and b are constants which may
be determined for the species studied (alternatively, general values may be substituted).
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132
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Swift AC, Smith GT, Douglas DL. Dual primary adenocarcinoma of the duodenum and jejunum in a patient with previous colonic cancers. Postgrad Med J 1980; 56:871-4. [PMID: 7267502 PMCID: PMC2424833 DOI: 10.1136/pgmj.56.662.871] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Primary adenocarcinoma of the small intestine is an uncommon tumour, the incidence being 40-60 times less frequent than carcinoma of the colon. Multiple primary neoplasia of the small bowel, although not infrequently seen with benign growths, is an extremely rare event with malignant lesions. A patient is described who had an adenocarcinoma of the duodenum and jejunum, with a previous history of colonic carcinomas. The case is discussed together with a brief review of the literature.
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133
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Smith GT, Geary G, Ruf W, Fore FN, Oyama M, McNamara JJ. Quantitative effect of a single large dose of methylprednisolone on infarct size in baboons. Cardiovasc Res 1980; 14:408-18. [PMID: 7459927 DOI: 10.1093/cvr/14.7.408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Despite numerous studies directed at determining the ability of glucocorticoids to minimise myocardial ischaemic damage following acute coronary occlusion, there remains no clear consensus concerning their usefulness. Within an ischaemic region, glucocorticoids produce membrane stabilising effects which decrease the autolytic effects of marked cellular swelling and lysosomal membrane rupture. Their use has also been associated with a decreased cellular lysis due to infiltrating inflammatory cells and with an increase in collateral blood flow. The use of glucocorticoids has remained clinically attractive due to experimental observations regarding these local actions; however, the potential of these actions to enhance long-term viability of ischaemic myocardium has remained uncertain. A major problem in the comparison of the extent of infarction between treated and untreated animals has been the variability in infarct size that results from coronary artery ligation at any given anatomical site. In the experimental baboon model which we have employed, we have previously shown that the ultimate epicardial area of infarction, as well as the volume of infarction as assessed histologically at 7 days post occlusion, shows a good linear relationship to the area of ischaemic injury at 1-hour post occlusion, as assessed by high resolution epicardial ST segment mapping. In this way animals may serve as their own controls and as long as an intervention is initiated at 1 h or later post occlusion, then the epicardial area or transmural volume of histologically assessed infarction at 7 days can be compared with the predicted epicardial area or transmural volume of infarction and hence determine the effect of that intervention in altering infarct size. This experimental model does not rely on a comparison of the absolute magnitude of infarcts between treated and untreated animals and, therefore, avoids the error introduced by the inherent variability in infarct size between animals after coronary occlusion.
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134
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Conine TA, Smith GT, Jackson EH. Outcomes of teacher preparation in allied health sciences. JOURNAL OF ALLIED HEALTH 1979; 8:220-5. [PMID: 528357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Formal preparation of allied health instructors for responsibilities of teaching and educational leadership has been encouraged through substantial federal grants, institutional funds and university programming. A review of the literature reveals very little regarding formal measurements of outcomes in terms of career progress of the graduates their professional activities and their level of satisfaction with the educational content and preparation as a teacher. This study focuses on the achievements and opinions of 106 graduates of a master's degree teacher preparation program. Graduates were found to be employed in positions commensurate with their preparation, and rewarded by their employers with career advancement, salary increases and promotions. The graduates believed that they had gained the skills needed. They also identified the strengths and weaknesses of the program. Implications of the findings are discussed.
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135
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Smith GT, Geary G, Ruf W, Roelofs TH, McNamara JJ. Epicardial mapping and electrocardiographic models of myocardial ischemic injury. Circulation 1979; 60:930-8. [PMID: 113130 DOI: 10.1161/01.cir.60.4.930] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The amplitude and distribution of epicardial ST-segment elevation (ST) were examined for an 8-hour period after coronary occlusion in eight baboons and five pigs. ST was determined from unipolar epicardial electrograms obtained from a high-resolution matrix of fixed electrodes overlying a transmural region of ischemia. A relatively uniform degree of ST was observed overlying the ischemic region for 20 minutes after coronary occlusion. A gradient in ST from the periphery to the center of the ischemic region was documented after 20 minutes of ischemia. In 10 other pigs, change in the degree of ST was examined contingent on either an increase (five pigs) or decrease (five pigs) in the size of the ischemic region after 1 hour of preexisting ischemia. An abrupt increase in the number of electrodes that showed ST (NST) from 7.8 +/- 1.24 (SEM) to 14.8 +/- 1.35 (90%) was associated with an increase in mean ST of 58% from 4.28 +/- 0.61 mV to 6.78 +/- 0.84 (p less than 0.05). An abrupt decrease in NST from 25.2 +/- 2.63 to 14.6 +/- 2.22 (42%) was associated with a decrease in mean ST of 24%, from 8.2 +/- 0.36 mV to 6.3 +/- 0.30 mV (p less than 0.01). The results during early ischemia (less than 20 minutes of ischemia) are accurately represented by a model of ischemia in which injury current arises only at the ischemic boundary. The results during later ischemia (after 20 minutes of ischemia) may be represented by a model in which ST is considered dependent on injury currents generated throughout the ischemic region.
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136
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Smith GT. Continuing medical education: a solution to some problems caused by the present pedisolane. THE ALABAMA JOURNAL OF MEDICAL SCIENCES 1979; 16:259-60. [PMID: 546233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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137
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Huebner RJ, Fish DC, Djurickovic D, Trimmer RW, Bare AL, Bare RM, Smith GT. Induction of rat sarcomas in rats treated with antithymocyte sera after transplantation of human cancer cells. Proc Natl Acad Sci U S A 1979; 76:1793-4. [PMID: 287020 PMCID: PMC383477 DOI: 10.1073/pnas.76.4.1793] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Human cancer cells that had had high (greater than 160) tissue culture passages, when transplanted into antithymocyte-treated F344 newborn rats, caused induction of rat sarcomas in the rats within 2 or 3 subcultures, whereas human cancer cells with low (5-33) passages in vitro did not cause overt induction of rat sarcomas until after 5-10 subtransplantations. Because oncornavirus activity was not detected in either rat or human tumors, it is suggested that transforming sequences located on the human tumor cells may have been transferred to supporting rat reticulum cells in close contact with the human cancer cells.
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138
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Fore FN, Smith GT, McNamara JJ. Prediction of infarct size with baboons. A proposed model for accurately determining the efficacy of therapeutic interventions. Circ Res 1978; 43:455-65. [PMID: 98240 DOI: 10.1161/01.res.43.3.455] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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139
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Mohr SJ, Chirigos MA, Smith GT, Fuhrman FS. Specific potentiation of L1210 vaccine by pyran copolymer. Cancer Res 1976; 36:2035-9. [PMID: 1268855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Pyran copolymer (NSC 46015) was found to potentiate strongly the immune response of C57BL/6J X DBA/2 F1 mice to 10(4) live L1210 tumor cells following suboptimal vaccination with 10(7) radiation-inactivated L1210 cells. Optimal immunity to challenge was produced by concomitant i.p administration of pyran and L1210 vaccine, and activity was dependent upon both pyran and vaccine dosages. In addition, this immunopotentiation seemed to be related to the intrinsic viscosity of different pyran preparations tested, although all the pyran compounds had significant activity. Furthermore, the increased immunity of subsequent live tumor challenge appeared to be specific for the vaccinating cell type.
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140
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Oman-McDanal JT, Smith GT, Suehiro GT, Sims S, McNamara JJ. Oxygen consumption changes with stored blood infusions. Ann Surg 1975; 182:104-7. [PMID: 813584 PMCID: PMC1343825 DOI: 10.1097/00000658-197508000-00003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Stored blood contains microaggregates, often implicated in the pathogenesis of post-traumatic pulmonary insufficiency. This study was an attempt to further elucidate the effect of autologous stored, filtered and non-filtered blood infusions and homologous stored and fresh blood infusions on pulmonary function and hemodynamics. Inconsistent changes in pulmonary hemodynamics and blood oxygenation were noted. The one significant finding was an increase in oxygen consumption, which occurred with unfiltered autologous or homologous blood but not with fresh or filtered blood. Since an increased oxygen consumption results in an oxygen demand which is difficult to meet in the face of multiple other injuries, it is conceivable that this observation implicates massive stored blood transfusion as a major contributing factor in the development of so-called irreversible shock.
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141
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Smith GT, Soeter JR, Haston HH, McNamara JJ. Coronary reperfusion in primates. Serial electrocardiographic and histologic assessment. J Clin Invest 1974; 54:1420-7. [PMID: 4436440 PMCID: PMC301697 DOI: 10.1172/jci107889] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
After acute coronary occlusion in primates, the time period during which reperfusion results in significant salvage of reversibly injured myocardium was investigated. In 23 monkeys, the left anterior descending coronary artery was occluded from 1 to 6 h; and in 5 others, occlusion was maintained for the 1-wk study. Unipolar epicardial electrocardiograms were monitored from mapping points on the anterior and lateral left venticle. S-T segment elevation (S-T upward arrow) and R + S wave amplitude (RS) were measured before occlusion and at regular intervals during occlusion and reperfusion. Summated S-T upward arrow (SigmaS-T upward arrow) and summated RS (SigmaRS), computed for mapping points demonstrating greater than 2 mV S-T upward arrow, were used as serial measures of electrical injury. SigmaS-T upward arrow peaked within 2-h postocclusion and then gradually declined throughout the period of occlusion suggesting the progress of infarction within the area of injury. After reperfusion SigmaS-T upward arrow rapidly declined to near cnotrol values indicating the extent of reversible injury. During the period of occlusion, the magnitude of voltage loss in SigmaS-T upward arrow as a percent of maximum SigmaS-T upward arrow was proportional to the duration of occlusion, though the rate of loss decreased with increasing time of occlusion. Reperfusion after 6 h of occlusion resulted in reversal of only a small remaining component of the maximum current of injury. The voltage decrease in SigmaRS (from control values) was proportional to the duration of occlusion, though the decrease was accelerated during the first 2-h postocclusion. Whereas reperfusion interrupted the decline in SigmaRS, a consistent increase in SigmaRS postreperfusion was observed only after occlusion of 1 h. With respect to reperfusion groups, significance in SigmaS-T upward arrow voltage loss as a percent of maximum SigmaS-T upward arrow was demonstrated between 2-h and 4-h, 4- and 6-h, and 6-h and chronically ligated animals. Significance in SigmaRS voltage loss as a percent of control SigmaRS was demonstrated between 2- and 4-h, and 4- and 6-h reperfusion groups. Hearts were excised at 7 days for histological assessment of infarct size. Planimetric determination of left ventricular areas and areas of necrosis using slides made from 10 serial cross sections were used in estimating the percent of left ventricle infarcted. A significant reduction in infarct size was demonstrated between reperfused animals at 2 h and the 4- and 6-h reperfusion groups. A trend was noted suggesting increasing infarct size up to 6 h after experimental occlusion.
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142
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McNamara JJ, Smith GT, Suehiro GT, Soeter JR, Anema RJ, Morgan AL, Liao SK. Myocardial viability after transient ischemia in primates. J Thorac Cardiovasc Surg 1974; 68:248-56. [PMID: 4210399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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143
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Hoadley AW, Kemp WM, Firmin AC, Smith GT, Schelhorn P. Salmonellae in the environment around a chicken processing plant. Appl Microbiol 1974; 27:848-55. [PMID: 4208511 PMCID: PMC380163 DOI: 10.1128/am.27.5.848-857.1974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Studies have been conducted over a 2-year period to determine the extent to which a poultry processing plant served as a reservoir of salmonellae reaching the external environment, to examine the question of the importance of salmonellae in the environment, and to consider how best to control the spread of the organisms. The studies have been undertaken at a chicken processing plant handling between 75,000 and 80,000 birds per day. Populations of salmonellae and indicator bacteria were estimated in the raw wastes, through the waste treatment plant, and in the receiving stream waters. The results demonstrate that salmonellae are present in poultry processing wastes in a surprisingly constant relation to fecal coliforms (in excess of 1 Salmonella per 500 fecal coliforms), that serotypes in the environment are constantly changing, and that they may reflect unusual conditions in the processing plant, or a possible source of infection among human and animal residents of the environment. Disinfection of poultry processing wastes is recommended.
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144
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McNamara JJ, Soeter JR, Suehiro GT, Anema RJ, Smith GT. Surface pH changes during and after myocardial ischemia in primates. J Thorac Cardiovasc Surg 1974; 67:191-4. [PMID: 4204247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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145
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Soeter JR, Smith GT, Anema RJ, Suehiro GT, McNamara JJ. Distribution of oxygenated blood in femoral and brachial artery perfusion during venoarterial bypass in primates. J Thorac Cardiovasc Surg 1973; 65:825-9. [PMID: 4696882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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146
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Forbes JA, Mutch LM, Smith GT, Tulloch AJ. Study of the demand for urgent treatment in general practice. BRITISH MEDICAL JOURNAL 1967; 3:856-8. [PMID: 6036441 PMCID: PMC1842583 DOI: 10.1136/bmj.3.5569.856] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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147
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Smith GT. Smog--its origin. ROCKY MOUNTAIN MEDICAL JOURNAL 1967; 64:55-8. [PMID: 6039932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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148
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Smith GT, Salvadorini VA. Pulmonary embolism. ROCKY MOUNTAIN MEDICAL JOURNAL 1966; 63:43-8. [PMID: 5905428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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149
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Olsen DB, Smith GT, McKay LM. Heart block in sheep. ROCKY MOUNTAIN MEDICAL JOURNAL 1966; 63:48-52. [PMID: 5905429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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150
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Smith GT. Observations on the life history of the scorpion Urodacus abruptus (Scorpionidae), and the analysis of its home sites. AUST J ZOOL 1966. [DOI: 10.1071/zo9660383] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The life history of the scorpion was worked out for a discrete population on
Black Mountain near Canberra, A.C.T. The biology was unusual because of an
unexpected longevity and a highly imbalanced adult sex ratio. A clear selection of
favoured home sites was demonstrated, but it was also shown that availability of food
limited the population before all potential home sites were occupied. A mechanism of
numerical stabilization dependent on the regulation of recruitment is discussed.
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