Minimum Effective Rate of Chlorimuron and Imazaquin Applied to Common Cocklebur (Xanthium strumarium)

1989 ◽  
Vol 3 (1) ◽  
pp. 126-130 ◽  
Author(s):  
William L. Barrentine
Keyword(s):  
Field Experiment ◽  
Moisture Stress ◽  
Effective Rate ◽  
Xanthium Strumarium ◽  
Regression Analyses ◽  
Probit Regression ◽  
The Mean ◽  
Growing Conditions

A field experiment was conducted in 1986 and 1987 to determine the minimum effective rate (MER)3of imazaquin and chlorimuron applied postemergence to common cocklebur. MER is defined as the quantity required to provide at least 90% control. Based on probit regression analyses, the mean calculated MERs of imazaquin and chlorimuron for 2-leaf common cocklebur were 27.5 and 4.5 g ai/ha, respectively. Under optimum growing conditions, the calculated MERs of imazaquin and chlorimuron for 6-leaf common cocklebur were 34 and 4.6 g/ha, respectively. When applied to 6-leaf plants under slight moisture stress, the calculated MERs for imazaquin and chlorimuron were 54 and 17.4 g/ha, respectively.

scholarly journals Evaluation of a random access analyser: BM/Hitachi 911

1995 ◽  
Vol 17 (6) ◽  
pp. 213-218
Author(s):  
Taweesook Kanluan ◽  
Surapon Tangvarasittichai ◽  
Orathai Tangvarasittichai
Keyword(s):  
Extreme Values ◽  
Random Access ◽  
Regression Analyses ◽  
The Mean ◽  
Carry Over

The performance of Boehringer Mannheim's BM/Hitachi 911 was evaluated for three months. The mean coeffcient of variation (CV) of the within-run and between-run imprecision of the 16 analytes were less than 1.16% (range 0.47-2.38%) and 1.35% (range 0.62-2.93,%), respectively. A linearity study for the various assays covered clinically important levels. No relevant drift was observed during an eight-hour assay nor was any sample-related carry-over detected. In all cases, the regression analyses (slopes) of the results obtainedfrom BM/Hitachi 911 and 717 were between the extreme values of 0.94 and 1.05. During the three months of operation, no major problem was encountered. The BM/Hitachi 911 was found to be easily operated, to require minimal attention and simple daily maintenance during operation.

scholarly journals Influence on attitudes and lifestyle due to lockdown amidst COVID-19 pandemic: a perception-based analysis among Bangladeshi residents

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Md. Saiful Islam ◽  
Md. Asad Ullah ◽  
Ummay Soumayia Islam ◽  
Sahadat Hossain ◽  
Yusha Araf ◽  
...  
Keyword(s):  
Associated Factors ◽  
Formal Education ◽  
Rural Residence ◽  
Regression Analyses ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Factors Associated ◽  
Positive Attitudes ◽  
The Mean ◽  
Structured Questionnaire

Abstract Background Countrywide lockdown or stay-at-home order has been implemented to slow down the transmission of emergent coronavirus. However, the influence on attitudes and lifestyle due to lockdown amidst the coronavirus disease 2019 (COVID-19) pandemic has been poorly understood. The present study aimed to investigate the influence on attitudes and lifestyle due to lockdown amidst the COVID-19 pandemic among Bangladeshi residents. Methods A cross-sectional survey carried out involving 1635 community dwellers across eight divisions in Bangladesh conducted from April 15, 2020 to May 10, 2020. A structured questionnaire incorporating socio-demographic, attitudes towards lockdown and adverse lifestyle amidst lockdown measures was employed to collect data using the Google Forms. Multiple regression analyses were executed to determine the associated factors of positive attitudes towards lockdown and adverse lifestyle. Results The mean scores of attitudes towards lockdown were 67.9 (SD = 8.4) out of 85 with an overall correct rate (positive attitudes) of 79.9%; whereas the mean scores of adverse lifestyle amidst lockdown were 16.1 (SD = 4.8) out of 34 with an overall rate of 47.4%. The factors associated with more positive attitudes towards lockdown included being female, divorced, higher educated, and students. Conversely, being male, having no formal education, and rural residence were associated factors of adverse lifestyle amidst the COVID-19 pandemic. Conclusions The findings reflect how the COVID-19 lockdown has preciously impacted the attitudes, and lifestyle of Bangladeshi citizens, which will contribute to promoting appropriate measures during a subsequent zonal or complete lockdown.

Calving dates and subsequent intercalving intervals in New Zealand beef herds

1984 ◽  
Vol 39 (1) ◽  
pp. 51-57 ◽  
Author(s):  
C. A. Morris
Keyword(s):  
New Zealand ◽  
First Year ◽  
Age Group ◽  
Regression Analyses ◽  
Industry Data ◽  
Beef Industry ◽  
Beef Herds ◽  
The Mean

ABSTRACTThe calving dates of spring-calving cows in New Zealand Angus and Hereford herds, taken from 350 and 240 herd-years respectively, and the intercalving intervals (CI) of cows in 95 Angus and 73 Hereford herds have been summarized. The relationships of each CI with the calving date which initiated it were also analysed. Results for each breed were analysed taking account of district, herd, year and cow age (in years), a total of 35 890 Angus and 22 397 Hereford records being used. The first-calving date (FCD) was identified for each herd-year, and 0·82 of Angus and 0·75 of Hereford cows were recorded as calving within 60 days of the FCD. On a herd basis, proportionately only 0·27 of Angus and 0·15 of Hereford herds had calving spreads of 80 days or less (defined as the time from the FCD to the last calving date). With barren years ignored, the CIs of cows averaged 370 days (Angus) and 368 days (Hereford). Two-year-old cows had on average a CI of 12 (Angus) or 7 days (Hereford) longer in 1974-75 than older cows, and the differences were both 12 days in 1975-76. Regression analyses showed that, on average, the later the calving date within a herd-year and age group, the shorter the subsequent CI. For cows calving early in the first year, the CI increased by 7 days for Angus and 5·4 days for Herefords for each 10 days before the mean calving date for the breed. There were significant effects of district and cow age on the regression estimates. The overall regressions were not consistent with those derived from British beef industry data.

scholarly journals Soft drinks consumption, diet quality and BMI in a Mediterranean population

2010 ◽  
Vol 14 (5) ◽  
pp. 778-784 ◽  
Author(s):  
Eva Balcells ◽  
Mario Delgado-Noguera ◽  
Ricardo Pardo-Lozano ◽  
Taïs Roig-González ◽  
Anna Renom ◽  
...  
Keyword(s):  
Mediterranean Diet ◽  
Sedentary Lifestyle ◽  
Population Based ◽  
Soft Drinks ◽  
Mediterranean Population ◽  
Regression Analyses ◽  
Cross Sectional ◽  
Independent Population ◽  
The Mean ◽  
Diet Score

AbstractObjectivesEvidence of the effects of soft drinks consumption on BMI and lifestyle in adult populations is mixed and quite limited. The aim of the present study was to determine the association of soft drinks consumption with BMI and lifestyle in a representative Mediterranean population.DesignTwo independent, population-based, cross-sectional (2000 and 2005) studies. Dietary intake was assessed using a validated FFQ. Weight and height were measured.SettingGirona, Spain.SubjectsRandom sample of the 35- to 74-year-old population (3910 men and 4285 women).ResultsLess than half (41·7 %) of the population consumed soft drinks; the mean consumption was 36·2 ml/d. The prevalence of sedentary lifestyle increased with the frequency of soft drinks consumption (P = 0·025). Daily soft drinks consumption significantly increased the risk of low adherence to the Mediterranean diet (OR = 0·57, 95 % CI 0·44, 0·74 v. top tertile of Mediterranean diet score). Multiple linear regression analyses, controlled for potential confounders, revealed that an increment in soft drinks consumption of 100 ml was associated with a 0·21 kg/m2 increase in BMI (P = 0·001). Only implausibly low reports of energy consumption showed a null association between soft drinks consumption and BMI.ConclusionsSoft drinks consumption was not embedded in a healthy diet context and was positively associated with BMI and sedentary lifestyle in this Mediterranean population.

V. Studies of cosmic ray neutrino interactions in the Kolar Gold Field experiment

1967 ◽  
Vol 301 (1465) ◽  
pp. 137-157 ◽  
Keyword(s):  
Field Experiment ◽  
Cosmic Radiation ◽  
Cosmic Ray ◽  
Surrounding Rock ◽  
Standard Rock ◽  
Neutrino Interactions ◽  
Experimental Programme ◽  
Measured Rate ◽  
Deep Underground ◽  
The Mean

Results are presented of an experiment to study the penetrating particles in the cosmic radiation deep underground, at a depth of 7500 m. w. e. (standard rock). The events recorded are attributable, in the main, to muons produced either in the atmosphere or by the interactions of neutrinos in the surrounding rock. The muons have been studied in some detail and it appears that the mean energy of the neutrino induced muons (probably less than about 30 GeV) is low compared with that of the muons of atmospheric origin. The significance of the celestial coordinates of the muons and the measured rate of neutrino- induced muons is discussed and the future experimental programme is indicated.

ASSESSMENT OF A LARGE-FRUITED STRAWBERRY VARIETIES ECOLOGICAL PLASTICITY AND STABILITY IN TERMS OF PRODUCTIVITY AND FRUIT QUALITY

1970 ◽  
pp. 40-43
Author(s):  
T. G. Dakhno ◽  
O. А. Dakhno
Keyword(s):  
Vitamin C ◽  
Positive Response ◽  
Soluble Solids ◽  
Regression Analyses ◽  
Ecological Plasticity ◽  
High Vitamin ◽  
Significant Strength ◽  
Kamchatka Region ◽  
Fruit Productivity ◽  
Growing Conditions

The article presents a comparative analysis of the ecological plasticity and stability of large-fruited strawberry varieties in the conditions of the Kamchatka region. As a result of statistical and regression analyses, varieties with high ecological plasticity of productivity (bi  > 1) and a positive response to improved growing conditions were identified, classified as intensive type: Pervoclassniza, Atlas, Japonka, Grenada, Festivalnay romashka, Galina, Fructovay; with low plasticity (bi < 1)-extensive type: Solnechnay polaynka, Corrado, Wengerca. Of particular value are the most stable in terms of productivity varieties of intensive type Galina and Fruit. A positive correlation of significant strength between the productivity of strawberry varieties and the coefficients of stability (r = 0,7) and plasticity (r = 0,6) was established, which shows the effectiveness of their use in assessing the adaptability of varieties. High-vitamin varieties with an average berry weight of at least 7,0 g, the most environmentally plastic and stable in vitamin C content, were identified: Atlas, Firework, Pervoclassniza, Fructovay. A comprehensive assessment of the parameters of adaptability in terms of fruit productivity and quality (vitamin C content, soluble solids, sugar-acid coefficient)established that the highest ecological plasticity and stability are possessed by high-vitamin varieties of intensive type Pervoclassniza and Fructovay.

scholarly journals Extension Mechanism of the Proximal Interphalangeal Joint of the Human Phalanx: A Cadaveric Biomechanical Study

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Junho Park ◽  
Chang-Hun Lee ◽  
Youngjin Choi ◽  
Il-Han Joo ◽  
Kwang-Hyun Lee ◽  
...  
Keyword(s):  
Joint Angle ◽  
Proximal Interphalangeal Joint ◽  
Biomechanical Study ◽  
Regression Analyses ◽  
Absolute Value ◽  
Extension Mechanism ◽  
Fresh Cadaver ◽  
Pip Joint ◽  
Joint Flexion ◽  
The Mean

Our purpose was to compare the contributions of these two systems to assess PIP joint extension in fresh cadaver models. Nine middle fingers of fresh cadavers were used. The PIP joint angle was measured while an extension load was applied on the extensor tendons. Specimens on which extension load was applied on the extrinsic extensors were classified as the extrinsic group, and those on which extension load was applied on the intrinsic extensors were classified as the intrinsic group. Linear regression analyses were performed to obtain regression equation and the extension load-PIP joint angle curve. The mean of slope of the curve was compared between the two groups using paired t-test. The same experiments were done for the metacarpophalangeal (MP) joint in 0° and 60° flexion to evaluate the effect of MP joint flexion on PIP joint extension. The mean slope of the extension load-PIP joint angle curve of the extrinsic group was significantly greater than that of the intrinsic group. With the MP joint in 0° flexion, the mean slope of the extrinsic and intrinsic groups was -0.148 and -0.117, respectively (greater absolute value means greater slope, p=0.01). With the MP joint in 60° flexion, the mean slopes were -0.147 and -0.104, respectively (p=0.015). The contribution of the intrinsic extensor for PIP joint extension shows decreasing trends with MP joint flexion. The extrinsic extensors have greater contribution for PIP joint extension compared with the intrinsic extensors.

Effect of triapenthenol plant-growth regulator on canola height, yield, side branches and pod density

1992 ◽  
Vol 72 (4) ◽  
pp. 1153-1156 ◽  
Author(s):  
K. J. Kirkland
Keyword(s):  
Brassica Napus ◽  
Plant Growth ◽  
Field Experiment ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Growth And Development ◽  
Management Tool ◽  
Brassica Napus L ◽  
Growing Conditions

A 3-yr field experiment was conducted at the Scott Experimental Farm to determine the effect of the growth regulator, triapenthenol, on the growth and development of Argentine canola (Brassica napus L.). Triapenthenol reduced plant height 25–45 cm under optimal growing conditions. Increases in yield, branches and total pods were observed. Application at the bud stage was more effective than earlier treatment in the rosette. It was concluded that triapenthenol application to canola could be a useful management tool, particularly under optimal growing conditions.Key words: Canola, growth regulator, RSW-0411, lodging

Relative economic importance of some wool quality traits for Merino and crossbred wool types

1970 ◽  
Vol 10 (46) ◽  
pp. 544 ◽  
Author(s):  
PD Mullaney ◽  
ID Sanderson
Keyword(s):  
Selection Index ◽  
Fibre Diameter ◽  
Economic Importance ◽  
Quality Traits ◽  
Regression Analyses ◽  
Independent Variables ◽  
Economic Weights ◽  
Australian Wool ◽  
The Mean ◽  
Selection For

The economic weights of various quality traits of both Merino and crossbred wool types hive been estimated. Australian averages of clean wool prices for Australian Wool Board wool types, into which mid-side samples of fleece were classified, have been used.For each of fifteen seasons, 1953-54 to 1967-68, the mean clean wool price for each wool type was expressed as a percentage of the mean wool price for all types in that season. Rank correlations for price-type means were high between seasons, varying between 0.91 and 0.98. Further analyses were therefore performed using prices averaged for the 15 seasons. Multiple regression analyses were carried out, the dependent variable being the mean price for each fleece type, expressed as a percentage of the average price of all types for al) seasons and the independent variables being the measurement of fibre diameter, crimps per inch and length, and the subjective gradings of colour, handle, character, and quality number. For both Merino and crossbred wool types, the major determinants of price were quality number, colour, and handle, with quality number being of overwhelming importance. The remaining variables were not important as joint determinants of price, and were deleted from the analyses. Quality number, colour, and handle controlled about 81 and 86 per cent of the variation in price for Merino and crossbred wool types. It is likely that most progress in selection for wool production would be made by incorporating these findings into a selection index.

Tillage and Soybean Canopy Effects on Common Cocklebur (Xanthium strumarium) Emergence

Weed Science ◽  
2007 ◽  
Vol 55 (5) ◽  
pp. 474-480 ◽  
Author(s):  
Jason K. Norsworthy ◽  
Marcos J. Oliveira
Keyword(s):  
Seed Bank ◽  
Field Experiments ◽  
Soil Depth ◽  
Thermal Fluctuation ◽  
Xanthium Strumarium ◽  
Canopy Development ◽  
No Till ◽  
Artificial Seed ◽  
The Mean ◽  
Soybean Canopy

Field experiments were conducted in Pendleton, SC, in 2004 and 2005, to determine the influence of tillage with or without soybean on common cocklebur emergence. Treatments included no-till/no soybean (NTNS), no-till plus soybean (NTS), tillage/no soybean (TNS), and tillage plus soybean (TS). Emergence was monitored from an artificial seed bank in 2004 and a natural seed bank in 2005. Overall, common cocklebur emerged from early May through late October and presented multiple emergence. In no-till plots with or without soybean, initial emergence was delayed 7 d in both years. In TNS plots, major emergence (daily emergence > mean emergence plus standard deviation) of common cocklebur occurred from early May to late July. In NTNS plots, major emergence occurred from late May through late August. No-till reduced total common cocklebur emergence by 59 to 69% compared with tillage. At the V5 to V6 soybean growth stage, the daily soil thermal fluctuation at 2.5 cm soil depth diminished from approximately 15 to 5 C and reduced common cocklebur emergence by 84 to 91% for the rest of the growing season. Common cocklebur emergence was higher when the mean soil temperature was > 15 C, and the daily thermal fluctuation was > 7.5 C. This study suggests that strategies that promote early crop canopy development and minimum tillage should reduce common cocklebur emergence.

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