ECOLOGICAL STUDIES OF VACCINIUM SPECIES IN ALBERTA

1962 ◽  
Vol 42 (1) ◽  
pp. 82-90 ◽  
Author(s):  
D. W. Smith
Keyword(s):  
Growth And Development ◽  
Ecological Study ◽  
Growth Habit ◽  
Normal Growth ◽  
Organic Soil ◽  
Ecological Studies ◽  
Soil Horizons ◽  
Low Light ◽  
Minimum Requirement ◽  
Vaccinium Myrtilloides

An ecological study with emphasis on the clonal rhizome systems was carried out with two species of Vaccinium native to Alberta, namely, Vaccinium myrtilloides Michx., and Vaccinium vitis-idaea L. var. minus Lodd.Both species were found to prefer low light intensity; however, a minimum requirement of light for normal growth and development was indicated. V. myrtilloides had a wider adaptability in this respect.The thickness of the organic soil horizons was found to influence the growth and extent of the rhizomes of both V. myrtilloides and V. vitis-idaea var. minus. The normal depth of rhizomes of both plant species was found to be inversely related to the thickness of the soil organic layers.A system was established to permit the distinction of proximal and distal portions of the rhizome on the basis of the branching habit. Differences in morphology and growth habit were found to characterize clones of the two species, i.e. V. vitis-idaea var. minus had approximately twice as many above-ground shoots as did V. myrtilloides.

The growth and development of the leaf in tomato (Lycopersicon esculentum). I. The plastochron index, a suitable basis for description

1976 ◽  
Vol 54 (21) ◽  
pp. 2421-2428 ◽  
Author(s):  
Warren K. Coleman ◽  
Richard I. Greyson
Keyword(s):  
Lycopersicon Esculentum ◽  
Seasonal Variability ◽  
Growth And Development ◽  
Growth Analysis ◽  
Growth Habit ◽  
Leaf Growth ◽  
Growth Stages ◽  
Flower Buds ◽  
Morphological Status ◽  
Plastochron Index

Growth analysis indicates that the plastochron index (PI) is consistently applicable for describing the morphological status of the vegetative tomato shoot in quantitative terms, and pronounced seasonal variability in the growth habit is minimized. However, the PI is not applicable to tomato shoots after flower buds are produced at the vegetative apex. True leaf no. 3 goes through four growth stages which can be characterized in terms of the leaf plastochron index (LPI3). A basipetal trend in leaf growth and development is evident.

CONGENITAL SUCRASE-ISOMALTASE DEFICIENCY

PEDIATRICS ◽  
1972 ◽  
Vol 49 (6) ◽  
pp. 847-853
Author(s):  
I. Antonowicz ◽  
J. D. Lloyd-Still ◽  
K. T. Khaw ◽  
H. Shwachman
Keyword(s):  
Growth And Development ◽  
Clinical Presentation ◽  
Quantitative Estimation ◽  
Failure To Thrive ◽  
Normal Growth ◽  
Significant Rise ◽  
Small Intestinal Mucosa ◽  
Severe Diarrhea ◽  
Young Infants ◽  
Small Intestinal

Observations over a period of 6 years are reported on 10 children in whom the diagnosis of congenital sucrase isomaltase deficiency (SID) was confirmed by quantitative estimation of disaccharidase activity of the small intestinal mucosa. Repeat biopsies were performed on eight of the ten patients and showed no evidence that sucrase isomaltase activity is acquired. Sucrose tolerance tests (2 gm/kg) showed no significant rise in blood glucose in the seven patients in whom they were performed. This condition may appear in young infants with severe diarrhea resulting in a malabsorption syndrome and failure to thrive. It may also be manifest in a milder clinical presentation with bothersome diarrhea in spite of normal growth and development in the older infant or young child. The diagnosis in this latter group can be difficult, and is frequently missed.

A RAPID TECHNIQUE FOR DRYING ORGANIC SOIL HORIZONS USING A MICROWAVE OVEN

Soil Science ◽  
1992 ◽  
Vol 154 (5) ◽  
pp. 420-425 ◽  
Author(s):  
M. M. HARRIS ◽  
L. O. SAFFORD
Keyword(s):  
Organic Soil ◽  
Microwave Oven ◽  
Soil Horizons ◽  
Rapid Technique

Effects of long-term nitrogen addition on phosphorus cycling in organic soil horizons of temperate forests

2018 ◽  
Vol 141 (2) ◽  
pp. 167-181 ◽  
Author(s):  
Christine Heuck ◽  
Georg Smolka ◽  
Emily D. Whalen ◽  
Serita Frey ◽  
Per Gundersen ◽  
...  
Keyword(s):  
Temperate Forests ◽  
Nitrogen Addition ◽  
Organic Soil ◽  
Phosphorus Cycling ◽  
Soil Horizons

Effect of dietary menhaden oil on normal growth and development and on ameliorating mucosal injury in rats

1991 ◽  
Vol 54 (2) ◽  
pp. 346-350 ◽  
Author(s):  
J A Vanderhoof ◽  
D J Blackwood ◽  
H Mohammadpour ◽  
J H Park
Keyword(s):  
Growth And Development ◽  
Normal Growth ◽  
Mucosal Injury ◽  
Menhaden Oil

scholarly journals The closer to the Europe Union headquarters, the higher risk of COVID-19? Cautions regarding ecological studies of COVID-19

2020 ◽  
Author(s):  
Shuai Li ◽  
Xinyang Hua
Keyword(s):  
European Country ◽  
Ecological Study ◽  
Ecological Fallacy ◽  
Group Level ◽  
Ecological Studies ◽  
Public Concern ◽  
Individual Level ◽  
The Public ◽  
Country Level ◽  
Level Data

AbstractSeveral ecological studies of the coronavirus disease 2019 (COVID-19) have reported correlations between group-level aggregated exposures and COVID-19 outcomes. While some studies might be helpful in generating new hypotheses related to COVID-19, results of such type of studies should be interpreted with cautions. To illustrate how ecological studies and results could be biased, we conducted an ecological study of COVID-19 outcomes and the distance to Brussels using European country-level data. We found that, the distance was negatively correlated with COVID-19 outcomes; every 100 km away from Brussels was associated with approximately 6% to 17% reductions (all P<0.01) in COVID-19 cases and deaths in Europe. Without cautions, such results could be interpreted as the closer to the Europe Union headquarters, the higher risk of COVID-19 in Europe. However, these results are more likely to reflect the differences in the timing of and the responding to the outbreak, etc. between European countries, rather than the ‘effect’ of the distance to Brussels itself. Associations observed at the group level have limitations to reflect individual-level associations – the so-called ecological fallacy. Given the public concern over COVID-19, ecological studies should be conducted and interpreted with great cautions, in case the results would be mistakenly understood.

scholarly journals Hybrid tea-roses under controlled light conditions. I. The effect of the level of irradiance on the growth and development of seedlings.

1978 ◽  
Vol 26 (1) ◽  
pp. 119-127
Author(s):  
D.P. de Vries ◽  
L. Smeets
Keyword(s):  
Light Intensity ◽  
Leaf Area ◽  
Growth And Development ◽  
Day Length ◽  
Light Conditions ◽  
Flower Bud ◽  
Juvenile Period ◽  
Low Light ◽  
Bud Formation ◽  
Flower Bud Abortion

As a basis for breeding cvs adapted to flowering in winter light conditions, the growth of hybrid tea rose seedlings under controlled conditions was studied. Irradiance varied from 4-24 W/m2, day length was 8 h, temperature 21 deg C. Like cvs, the seedlings sometimes aborted the flower bud at low light intensity. With increasing irradiances, the following phenomena were observed: the juvenile period of the seedlings shortened; plants were longer at bud formation, at first flowering and at flower bud abortion; leaf area and the number of petals increased. Leaf number was constant at all irradiances. Flowering seedlings were smaller at bud formation, but taller at actual flowering than blind ones. Blind seedlings had fewer leaves with a smaller area. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Surgical cause of respiratory distress in a newborn

2021 ◽  
Vol 8 (9) ◽  
pp. 1629
Author(s):  
Vishnu Vardhan Reddy M. ◽  
Suguna Reddy C. ◽  
Yoga Nagendhar ◽  
Vardhini Sree D.
Keyword(s):  
Respiratory Distress ◽  
Growth And Development ◽  
Congenital Heart ◽  
Heart Diseases ◽  
Normal Growth ◽  
Surgical Excision ◽  
Term Infant ◽  
Congenital Heart Diseases ◽  
Common Causes ◽  
Lobar Emphysema

Common causes of respiratory distress in a term infant include transient tachypnoea of newborn, sepsis/congenital pneumonia and congenital heart diseases. Surgical causes of distress in a newborn are rare and should be considered when other causes have been ruled out. We report a case of an early term female neonate who developed respiratory distress immediately after birth which was gradually progressive and required respiratory support. On evaluation with chest radiography and CT, a diagnosis of congenital lobar emphysema (CLE) was made. Immediate surgical resection was planned and done on day 8 of life. Post operatively she had no respiratory distress and discharged within a week. Baby is now healthy with normal growth and development. Half of the cases of CLE are diagnosed within the first 6 months of life but very few cases present with respiratory distress since birth. Timely diagnosis and early surgical excision in neonates <2 months improve the outcome, as seen in our case.

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