scholarly journals Application of Soft Data in Nodule Resource Estimation

2020 ◽  
Author(s):  
Steinar Løve Ellefmo ◽  
Thomas Kuhn
Keyword(s):  
Conditional Expectation ◽  
Expert Knowledge ◽  
Mineral Resources ◽  
Deep Ocean ◽  
Study Data ◽  
Ocean Floor ◽  
Soft Data ◽  
North East ◽  
The Mean ◽  
Harsh Conditions

AbstractMinerals and metals are of uttermost importance in our society, and mineral resources on and beneath the deep ocean floor represent a huge potential. Deciding whether mining from the deep ocean floor is financially, environmentally and technologically feasible requires information. Due to great depths and harsh conditions, this information is expensive and time and resource consuming to obtain. It is therefore important to use every piece of data in an optimum way. In this study, data retrieved from images and expert knowledge were used to estimate minimum and maximum nodule abundances at image locations from an area in the Clarion-Clipperton-Zone of the equatorial North East Pacific. From the minimum and maximum values, box cores and the spatial correlation quantified through variogram, a conditional expectation and associated uncertainty were obtained through the Gibbs sampler. The conditional expectation and the uncertainty were used with the assumed certain abundance data from the box cores in a kriging exercise to obtain better informed estimates of the block by block abundance. The quality assessment of the estimations was done based on distance criterion and on kriging quality indicators like the slope of regression and the weight of the mean. From the original image locations, alternative image configurations were tested, and it was shown that such alternatives produce better estimates, without extra costs. Future improvements will focus on improving the estimation of the minimum and the maximum values at image locations.

Development of Prolonged Delivery of Tramadol and Dissolution Translation by Statistical Data Treatment

2011 ◽  
Vol 4 (1) ◽  
pp. 1331-1337
Author(s):  
P B Parejiya ◽  
B S Barot ◽  
P K Shelat
Keyword(s):  
Drug Release ◽  
Study Data ◽  
Stability Study ◽  
Dissolution Time ◽  
Matrix Tablet ◽  
Burst Effect ◽  
The Matrix ◽  
The Mean ◽  
The Difference ◽  
Dissolution Efficiency

The present study was carried out to fabricate a prolonged design for tramadol using Kollidon SR (Polyvinyl acetate and povidone based matrix retarding polymer). Matrix tablet formulations were prepared by direct compression of Kollidon SR of a varying proportion with a fixed percentage of tramadol. Tablets containing a 1:0.5 (Drug: Kollidon SR) ratio exhibited a rapid rate of drug release with an initial burst effect. Incorporation of more Kollidon SR in the matrix tablet extended the release of drug with subsequent minimization of the burst effect as confirmed by the mean dissolution time, dissolution efficiency and f2 value. Among the formulation batches, a direct relationship was obtained between release rate and the percentage of Kollidon SR used. The formulation showed close resemblance to the commercial product Contramal and compliance with USP specification. The results were explored and explained by the difference of micromeritic characteristics of the polymers and blend of drug with excipients. Insignificant effects of various factors, e.g. pH of dissolution media, ionic strength, speed of paddle were found on the drug release from Kollidon-SR matrix. The formulation followed the Higuchi kinetic model of drug release. Stability study data indicated stable character of Batch T6 after short-term stability study.

scholarly journals On tho proportions of the prevailing winds, the mean temperature, and depth of rain in the climate of London, computed through a cycle of Eighteen Years, or periods of the Moon’s declination

1843 ◽  
Vol 4 ◽  
pp. 300-300
Keyword(s):  
The Moon ◽  
Fair Weather ◽  
North West ◽  
West Wind ◽  
North East ◽  
East Wind ◽  
The North ◽  
The Common ◽  
The Mean ◽  
Solar Influence

In this paper the author investigates the periodical variations of the winds, rain and temperature, corresponding to the conditions of the moon’s declination, in a manner similar to that he has already followed in the case of the barometrical variations, on a period of years extending from 1815 to 1832 inclusive. In each case he gives tables of the average quantities for each week, at the middle of which the moon is in the equator, or else has either attained its maximum north or south declination. He thus finds that a north-east wind is most promoted by the constant solar influence which causes it, when the moon is about the equator, going from north to south; that a south-east wind, in like manner, prevails most when the moon is proceeding to acquire a southern declination ; that winds from the south and west blow more when the moon is in her mean degrees of declination, going either way, than with a full north or south declination ; and that a north-west wind, the common summer and fair weather wind of the climate, affects, in like manner, the mean declination, in either direction, in preference to the north or south, and most when the moon is coming north. He finds the average annual depth of rain, falling in the neighbourhood of London, is 25’17 inches.

Do methods of hospital pre-alerts influence the on-scene times for acute pre-hospital stroke patients? A retrospective observational study

2021 ◽  
Vol 6 (2) ◽  
pp. 19-25
Author(s):  
Jacob Gunn
Keyword(s):  
Standard Deviation ◽  
Observational Study ◽  
Acute Stroke ◽  
Ambulance Service ◽  
Time Saving ◽  
North East ◽  
Admission Policies ◽  
The Mean ◽  
Time Critical ◽  
Mean Time

Introduction: Stroke is one of the leading causes of death and disability worldwide. The ambulance service is often the first medical service to reach an acute stroke patient, and due to the time-critical nature of stroke, a time-critical assessment and rapid transport to a hyper acute stroke unit are essential. As stroke services have been centralised, different hospitals have implemented different pre-alert admission policies that may affect the on-scene time of the attending ambulance crew. The aim of this study is to investigate if the different pre-alert admission policies affect time on scene.Method: The current study is a retrospective quantitative observational study using data routinely collected by North East Ambulance Service NHS Foundation Trust. The time on scene was divided into two variables; group one was a telephone pre-alert in which a telephone discussion with the receiving hospital is required before they accept admission of the patient. Group two was a radio-style pre-alert in which the attending clinician makes an autonomous decision on the receiving hospital and alerts them via a short radio message of the incoming patient. These times were then compared to identify if there was any difference between them.Results: Data on 927 patients over a three-month period, from October to December 2019, who had received the full stroke bundle of care, were within the thrombolysis window and recorded as a stroke by the attending clinician, were split into the variable groups and reported on. The mean time on scene for a telephone call pre-alert was 33 minutes and 19 seconds, with a standard deviation of 13 minutes and 8 seconds. The mean on-scene time for a radio pre-alert was 28 minutes and 24 seconds, with a standard deviation of 11 minutes and 51 seconds.Conclusion: A pre-alert given via radio instead of via telephone is shown to have a mean time saving of 4 minutes and 55 seconds, representing an important decrease in time which could be beneficial to patients.

Comparison of Working Length Determination in Mandibular Single-Rooted Teeth

2021 ◽  
Vol 8 (2) ◽  
pp. 19-23
Author(s):  
Ruqayya Sana ◽  
Farzana Rehman ◽  
Farzana Rehman ◽  
Rashid Javaid
Keyword(s):  
Sampling Technique ◽  
Cross Sectional Study ◽  
Study Data ◽  
Inclusion Criteria ◽  
Cross Sectional ◽  
Conventional Radiograph ◽  
Anterior Teeth ◽  
Working Length ◽  
The Mean ◽  
Electronic Apex Locator

OBJECTIVES: The objective of this study was to compare working length calculated with conventional radiographs and an electronic apex locator (IPEX II) during the root canal treatment of mandibular anterior teeth. METHODOLOGY: A cross-sectional study was done in the Department of Operative Dentistry, Sardar Begum Dental Hospital, Peshawar during February and March 2018. A consecutive sampling technique was used for sampling. Only 30 patients fulfilled the inclusion criteria of our study. Detailed medical and dental history was taken. Only patient fulfilling inclusion criteria were enrolled in the study. Data were analyzed using SPSS version 20. RESULTS: The mean age for patients was 45.33±5.16. 33% out of 30 patients (10) were male and 20 were females. The mean working length calculated from radiographs was 22.25±1.29 (min 20.09-max 24.10). The mean working length calculated by the electronic apex locator (IPEX II) was 22.17±1.28 (min 20.00-max 24.07). The mean difference between working length calculated by radiograph and electronic apex locator was -0.084mm, which means the working length determined by radiographs and by electronic apex locator has no difference in mandibular anterior teeth with single canals. CONCLUSION: Both the methods can be used effectively in endodontics for single-rooted mandibular teeth, but if both are used in combinations can lead to an improvement in the working length accuracy, which may significantly reduce the number of radiographs exposure, and increase the success and comfort for endodontic patients. KEYWORDS: Working Length, Apex Locator, Conventional Radiograph

Features of the course of birth in northern domestic deer in the conditions of the North-East of Russia (Yakutia)

2021 ◽  
pp. 23-28
Author(s):  
V. Fedorov ◽  
T. Ippolitova ◽  
E. Sleptsov ◽  
K. Plemyashov
Keyword(s):  
Living Environment ◽  
Behavioral Reactions ◽  
Climatic Zones ◽  
North East ◽  
The North ◽  
The Republic ◽  
A Minor ◽  
Harsh Conditions ◽  
Generic Process

Purpose: Determination of the peculiarities of the behavior and the flow of childbirth in females (wrenches) of the northern home deer of the Even Breed of the Republic of Sakha (Yakutia), depending on the natural climatic zone of breeding.Material and research methods. Research of the reservation of the hotel's reservoir of the northern home deer was held from April to June in the reindeer herds of the mountain-taiga (FSUE «Yuchjuyuskoye») and the Tundrov zones (SHPZK «Taba-Yana») of the Republic of Sakha (Yakutia) in the conditions of nomadic home reindeer herding since 2013 2018 In the study, the method of observation is used with the registration of motor activity of animals and the activities of individual bodies in a certain living environment.Results. To fix some patterns and species features of the generic process, 8 main elementary behavioral reactions spent venizables of northern domestic deer per day before childbirth: walking, feeding feed, chewing, leisure standing, rest lying, sleep, urination (how many times / total time), defecation (how many times / total time). Also marked 4 behavioral reactions on the hotel day: the exploitation time of the fetus, the licking of the calf, the time of the calf on his feet after delivery, the first reception of the mosper calf after birth. For each parameter, data reflected in tabular format is obtained.Conclusion. It has been established that the degree of adaptation of the northern domestic deer to the harsh conditions of existence in various natural-climatic zones of the Republic of Sakha (Yakutia) is very high, which is manifested in a minor difference in the duration of the generic process and behavioral reactions at the vainer of the mountain and tundra and tundra dilution zones.

scholarly journals Autonomy Levels of Nursing Students

2021 ◽  
Vol 11 (2) ◽  
pp. 265-269
Author(s):  
şefika dilek güven
Keyword(s):  
Nursing Students ◽  
Personal Information ◽  
Quality Care ◽  
Life Quality ◽  
First Grade ◽  
Study Data ◽  
Middle Level ◽  
Significance Level ◽  
The Mean ◽  
High Level

Autonomy is one of the vocational criteria of the nursing profession and is essential for safe and quality care. Nurses begin to learn the knowledge, skills, attitudes, and values associated with their professional roles during their school years. Nursing students should primarily have a high level of autonomy to protect and improve individuals’ health, and enhance their life quality in the future. This descriptive study was carried out with 285 nursing students to determine their autonomy levels. The study data were collected using a personal information form and the autonomy subscale (AS) of the Sociotropy-Autonomy Scale. For the analysis of the data, numbers, percentages, mean and standard deviation values, Mann-Whitney U, and Kruskal Wallis tests were employed, and the significance level was accepted as p <0.05. The mean total score of the students obtained from AS was 103.65 ± 18.34. Their scores from the subscales of AS were 42.68 ± 8.16 for “personal achievement”, 40.77 ± 7.70 for “freedom”, and 20.20 ± 4.70 for “enjoying loneliness”. The mean total score of the first-grade students was found to be higher than that of other grades, but the difference was not statistically significant (p> 0.05). The autonomy level of the students was found to be above the middle level, and the autonomy level of 1st-grade students was higher than that of the students in other grades.

scholarly journals Myocardial injury in COVID-19 patients is associated with the thickness of epicardial adipose tissue

Kardiologiia ◽  
2021 ◽  
Vol 61 (8) ◽  
pp. 48-53
Author(s):  
Savaş Özer ◽  
Eser Bulut ◽  
Ali Gökhan Özyıldız ◽  
Mustafa Peker ◽  
Oğuzhan Ekrem Turan
Keyword(s):  
Adipose Tissue ◽  
Myocardial Injury ◽  
Epicardial Adipose Tissue ◽  
Myocardial Damage ◽  
Study Data ◽  
Hypertensive Patients ◽  
Neutrophil Lymphocyte Ratio ◽  
Thoracic Computed Tomography ◽  
Injury Group ◽  
The Mean

Aim    High sensitive troponin (hs-TnI) levels may increase secondary to Coronavirus disease-2019 (COVID-19), and this increase is associated with cardiovascular mortality in COVID-19 patients. Epicardial adipose tissue (EAT) is associated with myocardial injury directly as a reservoir tissue for coronavirus, and indirectly through mediators it secretes as an apocrine gland. We aimed to evaluate the relationship between myocardial injury secondary to COVID-19 infection and EAT thickness.Material and methods    Thoracic computed tomography (CT) was performed in 73 consecutive patients diagnosed with COVID-19. EAT thickness and volume were calculated by two radiologists blind to the study data. We formed two groups according to hs-TnI concentrations, patients with myocardial damage (hs-TnI ≥11.6 ng / l) and without myocardial damage (hs-TnI<11.6 ng / dl).Results    A total of 46 patients were women (63.0 %). The mean age was 66.4±12.3 yrs in the myocardial injury group and 55.9±9.7 yrs in the group without myocardial injury (p<0.001). There were 20 hypertensive patients (68.9 %) in the injury group, while there were 12 hypertensive patients (27.3 %) in the group without injury (p=0.001). Glucose, C-reactive protein, D-dimer, white blood cell count, neutrophil, and neutrophil / lymphocyte ratio were higher in the injury group (p<0.05, for all variables). The mean EAT thickness was 5.6±1.6 mm in the injury group, whereas it was 4.8±1.8 mm in the group without injury (p=0.031). EAT thickness of 4.85 mm and above was associated with the myocardial injury with 65 % sensitivity and 39 % specificity (AUC=0.65, 95 % CI: 0.52–078, p=0.031).Conclusion    In patients with COVID-19 infection, higher rates of myocardial injury were observed as the EAT thickness increased. Epicardial adipose tissue, contributes to cytokine-mediated myocardial injury either directly or indirectly by acting as a reservoir for coronavirus. Increased EAT thickness is associated with myocardial injury in COVID-19 patients.

scholarly journals Effect of blended learning on students’ ability level and achievement in senior secondary geography in three education zones in niger state, Nigeria

2020 ◽  
Vol 1 (1) ◽  
pp. 21-26
Author(s):  
Abubakar Yahya Ibrahim
Keyword(s):  
Achievement Scores ◽  
High Ability ◽  
Ability Level ◽  
Significant Interaction Effect ◽  
North East ◽  
The North ◽  
Achievement Score ◽  
Significant Difference ◽  
The Mean ◽  
Low Ability

Purpose of the study: The purpose of this study was to determine the effect of student ability levels on the average value (x̄) of academic achievement of students in geography and the influence of method interactions and abilities on the average achievement score (x̄) of students in geography Methodology: The research design for the study was Quasi-experimental. Niger is one of the 36 States in Nigeria, the state is bordered by Zamfara State in the North, Kebbi State and Benin Republic in North West, Kaduna State in           the North East, In the South it is bordered by Kogi State, South West by Kwara State and South East by Federal Capital Territory (FCT) Abuja (Source: Geography Department FUT, Minna and Ministry of Land and Survey-Niger State, Minna). Main Findings: High ability level students had higher mean (x̄) achievement score that the low ability level students Also there is a significant difference between the mean (x̄) the achievement scores of low and high ability level students. Low ability level students who were taught geography using BLM had higher mean gain achievement score than the low ability level students taught using lecture methods while the high level ability students who were taught using BLM had higher mean gain achievement score than the high ability students taught using lecture method. It was further revealed that there is no significant interaction effect of method and ability level on the mean achievement scores in Geography.

SPORT WORKOUT AND PARTICIPATION ASSOCIATED MENSTRUAL PROBLEMS AMONG ADOLESCENT ATHLETES OF ALIGARH

2019 ◽  
Vol 2 ◽  
pp. 12-22
Author(s):  
Dr. Abdul Roof Rather ◽  
Nazia Khan ◽  
Abdul Kaisar
Keyword(s):  
Medical Practitioner ◽  
Sports Participation ◽  
Study Data ◽  
Survey Study ◽  
Adolescent Athletes ◽  
Menstrual Cycles ◽  
The Social ◽  
The Mean ◽  
Age Of Menarche ◽  
Structured Questionnaire

Background: Menstruation and related problems are issues of great importance for adolescent athletes. The concern becomes more crucial when it comes to the sports participation of athletes. The social and cultural setup in India leaves very less space for adolescent athletes to talk freely about menstruation. This raises a great concern regarding menstruation from health perspective. Objectives: To study sport workout and participation associated menstrual problems among adolescent athletes. Materials and Methods: A questionnaire based survey study was carried out during open sports meet 2017 in Aligarh, India. A sample of 158 girl athletes participated in this study. Data was collected using a 23-item semi structured questionnaire. Data collection lasted for two weeks and analysis was done using descriptive statistics, percentages and proportions. Results: Showed that the mean age of menarche was 13.5 years. 37.19% had irregular menstrual cycle. 73.23% (20.11% severe and 53.12% mild) athletes had abdominal pain and cramping during menstruation. While, mere, 7.98% athletes seek any medical practitioner or OB-GYN about their menstruation problems. 56.97% athletes think that sports training and participation effect their menstrual periods. 49.78% reported that diet provided to them was not well balanced and 59.09% reported that imbalanced diet had caused many problems like that of irregular menstrual periods, dizziness, sleeping difficulties, mood swings, constipation and feelings of depression to them. Conclusion: The knowledge of the participants of this study about the menstruation and related problems was very weak and did not know the safe maintenance procedures. They also have the ill faith that sports participation hampers the menstrual periods. Besides this the significant weight loss could be due to training load and dietary imbalances. This seems to have had played major role in the irregularity of the menstrual cycles.

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