Chondrilla juncea L. in Australia. I. Some factors affecting flowering

1966 ◽  
Vol 17 (4) ◽  
pp. 457 ◽  
Author(s):  
EG Cuthbertson
Keyword(s):  
Dark Period ◽  
Critical Factor ◽  
Photoperiodic Response ◽  
Day Length ◽  
Floral Initiation ◽  
Factors Affecting ◽  
Two Stages ◽  
Relationship Of ◽  
The Relationship ◽  
Chondrilla Juncea

The interaction between day length and vernalization, and the influence of growth temperature on flowering, in Chondrilla juncea L. (skeleton weed) have been studied. Bolting and floral initiation in unvernalized plants were suppressed in a 9-hr photoperiod. Increasing the photoperiod beyond 12 hr resulted in progressively earlier bolting and floral initiation, the critical day length being slightly less than 12 hr. Interrupting a 16-hr dark period by 1 hr of low-intensity light near its centre caused some plants to flower. Prior vernalization further accelerated bolting and flowering and reduced the dependence on day length. Vernalization, however, was not an obligate requirement. Post-bolting development was favoured by high temperatures. It was concluded that flowering in skeleton weed occurred in two stages. The first or photo-inductive phase was controlled by at least two partial processes. These were vernalization and a photoperiodic response in which the length of the dark period was the critical factor. The relationship of the flowering processes to the distribution of skeleton weed in Australia is discussed briefly.

PARANATAL FACTORS AFFECTING ADJUSTMENT IN CHILDHOOD

PEDIATRICS ◽  
1948 ◽  
Vol 2 (2) ◽  
pp. 154-162
Author(s):  
STUART SHELTON STEVENSON
Keyword(s):  
Physical Condition ◽  
Neonatal Period ◽  
Critical Factor ◽  
Human Beings ◽  
Factors Affecting ◽  
Good Physical Condition ◽  
Significant Difference ◽  
Relationship Of ◽  
The Relationship ◽  
Maladjusted Child

In an unselected series of 226 children, 73.9% were judged to be in good physical condition during the first two days of life. Of the children in good physical condition, only 19.2% were later judged to be maladjusted; whereas, of the children in poor physical condition, 39.0% were later considered maladjusted. This is a highly significant difference and it is concluded that a child's neonatal condition may effect his adjustment in later childhood. No single factor among the ones studied is demonstrably critical in affecting later adjustment. However, several maternal factors acting in gestation and during delivery, certain specific neonatal difficulties, and certain factors which might act anatomically or environmentally, are shown to increase the percentage of infants judged to be in poor neonatal condition. Intelligence, as revealed by the intelligence quotient, is not the critical factor which determines adequacy of adjustment in childhood, although it is related to it. The maladjusted child may be a victim of a physically damaged brain. He should be given all possible aid in his development and in his relations to other human beings. A child whose history includes a difficult birth and neonatal period should be brought up with more than the usual regard for his possible emotional deficiencies and difficulties. Many paranatal factors may affect the condition of the newborn infant. With a knowledge of the relationship of neonatal condition to childhood maladjustment, it is hoped that all of these factors may be studied with a broader perspective for their possible effects beyond the first days of life.

scholarly journals 86 Factors affecting beef calf vigor at birth: Dam peripartum body condition score, calving season, and calf size

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 3-3
Author(s):  
Lindsey G Wichman ◽  
Colby A Redifer ◽  
Natalie B Duncan ◽  
Craig A Payne ◽  
Allison M Meyer
Keyword(s):  
Mixed Model ◽  
Body Condition Score ◽  
Negative Relationship ◽  
Beef Cows ◽  
Abdominal Girth ◽  
Factors Affecting ◽  
Condition Score ◽  
Calving Season ◽  
Relationship Of ◽  
The Relationship

Abstract To determine effects of cow BCS and calving season on calf vigor and size and the relationship of calf size with vigor, 310 multiparous and primiparous beef cows (age: 4.6 ± 2.2 yr; BW: 663 ± 86 kg; BCS: 5.3 ± 0.6) from 3 spring (2015, 2016, 2017) and 4 fall (2015, 2017, 2018, 2019) calving seasons were observed during parturition. Time to stand (n = 191) was determined as minutes from birth to standing successfully for 5 sec. Within 24 h, calf BW (n = 187) and size [shoulder to tailhead length (STL), heart girth (HG), and abdominal girth (AG; n = 154)] were recorded. Data were analyzed using a mixed model containing effects of calving season (spring and fall), BCS category (< 5, =5, ≥6), and their interaction. Correlations were determined between time to stand and calf measurements separately for spring (n = 79) versus fall (n = 111). Cows with BCS < 5 gave birth to lighter (P = 0.02) calves that tended to have a faster (P ≤ 0.13) time to stand than =5 and ≥6. Calves from cows with BCS ≥6 tended to have greater (P ≤ 0.09) STL than =5 and < 5. Calves from cows with BCS < 5 had smaller (P = 0.13) HG than =5. Fall-born calves tended to have smaller (P ≤ 0.06) BW, HG, and AG than spring-born calves. Within fall calves, there tended to be a positive relationship (r = 0.16; P = 0.09) between time to stand and calf BW. Despite this, spring calves had a negative relationship (r = -0.26; P = 0.02) between time to stand and calf BW. In conclusion, cow BCS and calving season affect calf size and may affect calf vigor. These data suggest that calving season may dictate the relationship between calf vigor and size.

scholarly journals A STUDY OF FACTORS AFFECTING THE FLUIDITY OF CEMENT

2019 ◽  
pp. 8-16
Author(s):  
Л. Шахова ◽  
L. Shakhova ◽  
Е. Черноситова ◽  
E. Chernositova ◽  
Л. Щелокова ◽  
...  
Keyword(s):  
Labor Costs ◽  
Factors Affecting ◽  
Correlation And Regression Analysis ◽  
Cement Powder ◽  
Production Factors ◽  
Variable Factor ◽  
Cement Binder ◽  
Cement Grinding ◽  
Relationship Of ◽  
The Relationship

The fluidity of cement powder has a significant impact on the duration and labor costs in the process of transportation and shipment of cement. This determines the relevance of the task of finding mechanisms to control this parameter. During the production process, the fluidity of the cement powder is formed depending on the properties of the initial cement charge, the requirements for the thinness of the grinding to the finished product, the hardware design and the conditions of the process. In turn, the fluidity of cement affects the grinding process and the productivity of the mill. The rheological characteristics of the cement binder change over time depending on the physical properties of the material, environmental conditions and the equipment used for its storage. The reasons for the deterioration of the flow of cement powder is still not fully studied. The article is devoted to the study of the main factors affecting the fluidity of cement. The results of the statistical analysis of cement fluidity depending on the thinness of cement grinding (on the residue on the sieve №008 and the specific surface area by Blaine method) humidity, bulk weight and weight in the most compacted state. In addition, the relationship of production factors and cement fluidity is considered. Correlation and regression analysis shows that the fluidity is affected by a variable factor, which is not yet quantified.

The Relationship of Previous Breastfeeding Experiences and Factors Affecting Breastfeeding Rates: A Follow-Up Study

2020 ◽  
Vol 15 (12) ◽  
pp. 789-797
Author(s):  
Jun-Yan Li ◽  
Yi Huang ◽  
Hao-Qi Liu ◽  
Jing Xu ◽  
Lu Li ◽  
...  
Keyword(s):  
Factors Affecting ◽  
Follow Up Study ◽  
Breastfeeding Rates ◽  
Relationship Of ◽  
The Relationship

scholarly journals Issues of wind mode visualization and pedestrian comfort assessment when designing residential buildings on sloping territories in the Arctic zone

2019 ◽  
Vol 64 ◽  
pp. 03013 ◽  
Author(s):  
Ilya V. Dunichkin ◽  
Emanuele Naboni ◽  
Anna E. Korobeinikova ◽  
Olga I. Poddaeva
Keyword(s):  
Urban Areas ◽  
Residential Buildings ◽  
The Arctic ◽  
Wind Regime ◽  
Local Climate ◽  
Factors Affecting ◽  
Aerodynamic Roughness ◽  
The Stability ◽  
Relationship Of ◽  
The Relationship

Subject of research: visualization of the wind regime of residential buildings on the slope area in the Arctic. Goals: the purpose of the study is to identify the problems of visualization of the wind regime on the slopes and the analysis of patterns of airflow around the sloping territories, affecting the comfort of pedestrians. Materials and methods: airflow patterns of slope areas with different characteristics and comfort assessment for humans are analyzed in the course of work. Geotechnical methods are presented in solving the problems of wind erosion and the stability of hillsides and complex terrain within the city limits. Results: The importance and novelty of the research in studying the relationship of slope geometry and environmental quality, as a decrease in comfort inevitably leads to a decrease in the development of nearby urban areas in settlements on the coast of the Arctic Ocean, problems with climate and local climate, as well as a decrease in the quality of life of people. The article considers the relationship of plastic relief with the aeration regime of the territory, the dependence of aerodynamic roughness on their height, features of aeration of the slope and hilly terrain, factors affecting the direction and speed of the wind and methods for studying the aeration regime of slope areas. Findings: The possibilities of applying existing approaches to research and visualization for slope areas are demonstrated. The direction of development of the technique for visualization of slope areas has been determined.

The relationship of skin follicle development to growth rate in sheep.

1955 ◽  
Vol 6 (2) ◽  
pp. 308 ◽  
Author(s):  
PG Schinckel
Keyword(s):  
Growth Rate ◽  
Birth Weight ◽  
Growth Conditions ◽  
Considerable Importance ◽  
Follicle Development ◽  
Factors Affecting ◽  
Relationship Of ◽  
The Relationship

Observations are reported on factors affecting the ratio of secondary to primary follicles (SJP) in a flock of Merino sheep.It was found that all follicles were initiated prior to birth but that the number which finally came to maturity (production of fibre) was significantly affected by birth weight and growth from birth to 1 month. Growth at later ages appeared to be unimportant. There was a significant correlation (r = +0.29) between birth weight and log potential S/P at birth. This is interpreted to indicate that while pre-natal growth conditions affect the number of follicles initiated, other factors are also of considerable importance. It is concluded that the larger animals at birth also have a greater total number of primary follicles than smaller animals. It is further concluded that this difference in total primary follicles results primarily from differences in size a t the 90th day of pre-natal life rather than from differences in density a t that time.

Influence of Social Media Marketing on the Brand Image of Organizations in the Hospitality Industry of Sri Lanka

2016 ◽  
Vol 7 (1) ◽  
pp. 30-41 ◽  
Author(s):  
Graham Romello Perera ◽  
Irosha Perera
Keyword(s):  
Social Media ◽  
Hospitality Industry ◽  
Brand Image ◽  
Social Media Marketing ◽  
Primary Data ◽  
Factors Affecting ◽  
The Social ◽  
Social Media Platforms ◽  
Relationship Of ◽  
The Relationship

The research paper aims to identify significant factors affecting towards the Social Media Marketing which can influence and affect the Brand Image of organizations in the hospitality sector. The identified factors include the following; 1. Positivity, 2. Consistency, 3. Differentiation, 4. Personality, and 5. Engagement Opportunities on Social Media. A framework was developed to highlight the relationship of the factors and their direct influence and impact on the Brand Image. A questionnaire is used to obtain primary data, and the data is analysed using a variety of statistical tools to measure and evaluate the strength of the influence and impact of Social Media Marketing on Brand Image of Hospitality Brands. Assessing the influence and impact of Social Media Marketing on their Brand Image can help organizations in the hospitality industry to evaluate the success of their Social Media Marketing Campaigns, while organizations that are currently not engaged in Social Media Marketing can gain a better understanding on how to utilize Social Media platforms to enhance their Brand Image.

The effect of semen age on conception rate

1953 ◽  
Vol 43 (3) ◽  
pp. 256-259 ◽  
Author(s):  
R. C. Campbell
Keyword(s):  
Artificial Insemination ◽  
Conception Rate ◽  
Factors Affecting ◽  
Breed Differences ◽  
External Conditions ◽  
Relationship Of ◽  
The Relationship

1. The relationship of semen age to conception rate was studied at two artificial-insemination centres and a subcentre of one of these. Data relating to 50,213 first inseminations were included in the analysis.2. It is shown that external conditions can affect the rate of decrease of conception rate with semen age.3. Records giving c.r.'s for each day of semen age may reveal centre differences that cannot be detected in records giving mean c.r.'s only.4. Information may be lost if data are grouped by months rather than recorded by collections.5. The rate of decrease should not be used for comparing centres until the various factors affecting it (e.g. breed differences) are more fully understood. Further investigations should not be limited to one centre.

scholarly journals Correlation of age, height, and gender with +Gz tolerance among healthy Indian participants

2020 ◽  
Vol 64 ◽  
pp. 14-17
Author(s):  
S Kasture ◽  
M Sharma ◽  
MS Nataraja
Keyword(s):  
High Performance ◽  
Aerospace Medicine ◽  
Factors Affecting ◽  
Modifiable Factors ◽  
Males And Females ◽  
The Mean ◽  
And Gender ◽  
Microsoft Office ◽  
Relationship Of ◽  
The Relationship

Introduction: Aircrew are repetitively exposed to positive Gz acceleration in fighter flying. Factors affecting +Gz tolerance vary among individuals and are determined by both modifiable and non-modifiable factors. Some of the non-modifiable factors influencing +Gz tolerance are age, gender, and height. The present study was undertaken to understand the relationship of these variables with relaxed +Gz tolerance. Material and Methods: The study involved a retrospective analysis of existing database of the high-performance human centrifuge at the Institute of Aerospace Medicine. Relevant data from 70 non-aircrew subjects were included for the study. Of these, 39 were male and 31 were female. The age and height varied from 27 to 38 years and 157 to 187 cm, respectively. The data were analyzed using Microsoft Office Excel® to find the correlation between age and height with relaxed +Gz tolerance. Relaxed +Gz tolerance of men and women was compared using unpaired t-test. Significance was set at P < 0.05. Results: The mean age, height, and relaxed +Gz tolerance of males were found to be 30.25 ± 4.3 years, 172.58 ± 6.5 cm, and 4.89 ± 0.67G, respectively, whereas those of females were 27.28 ± 3.36 years, 158.46 ± 6.78 cm, and 4.4 ± 0.85G, respectively. In both males and females, age and height showed no correlation with relaxed +Gz tolerance. However, the relaxed +Gz tolerance was found to be higher in males and this difference was statistically different (P = 0.008). Conclusion: Age and height showed no correlation with relaxed +Gz tolerance in both males and females nonaircrew subjects. Males exhibited a statistically significant, higher relaxed +Gz tolerance as compared to females.

scholarly journals Evaluation of smile esthetics in adults with different overjets

2021 ◽  
Vol 8 (2) ◽  
pp. 90-97
Author(s):  
Priyanka Choudhary ◽  
Payal Sharma ◽  
Piush Kumar ◽  
Shubhangi Jain
Keyword(s):  
Upper Lip ◽  
Factors Affecting ◽  
Different Types ◽  
Tooth Number ◽  
Group 3 ◽  
Group 2 ◽  
Smile Esthetics ◽  
Relationship Of ◽  
The Relationship ◽  
Buccal Corridor

Our aim was to quantitatively assess the relationship of smile esthetics variables with various types of anterior overjet (OJ) malocclusion, and identify the cephalometric factors affecting smile measurements in different types of anterior overjet malocclusion. 90 patients undergoing orthodontic treatment in the Department of Orthodontics were selected for this retrospective study based upon the inclusion criteria. The patients were divided into the following groups according to their OJ: Group 1 (0-4mm), Group 2 (&#62;4mm), Group 3 (&#60;0mm).The upper lip height, and inter-labial gap differed significantly among the groups, whereas arc ratio, tooth number, upper midline, buccal corridor, smile index, arch form index and lower tooth exposure did not significantly among the groups. Some smile variables (upper lip height, inter-labial gap) differed significantly among different types of anterior overjet malocclusion. This study confirmed that the smile pattern varies between different types of malocclusion.

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