scholarly journals Results of experimental research of wound ballistics of separate types and calibers of modern bullets

2021 ◽  
Vol 26 (4) ◽  
pp. 4-14
Author(s):  
V.I. Tsymbalyuk ◽  
I.A. Lurin ◽  
O.Yu. Usenko ◽  
K.V. Gumeniuk ◽  
S.G. Krymchuk ◽  
...  
Keyword(s):  
Wound Ballistics ◽  
Significance Level ◽  
Steel Core ◽  
Significant Damage ◽  
The Usa ◽  
Residual Cavity ◽  
Entrance Hole ◽  
The Difference ◽  
Level Of Significance ◽  
Type V

There was made the analysis of wound ballistics of modern expansive bullets in comparison with shell bullets on 25 blocks of ballistic plasticine (ROMA PLASTILINA No. 1, Ballistic Testing Backing Material), made in the USA, in which one shot from an AKS-74 automatic firearm and carbine ZBROYAR Z-10 with an optical sight was fired. The bullet speed was the highest in  5.45x39 caliber cartridge with a V-max bullet. – 1185 m/s, low in the bullet caliber cartridge .308 Win with a bullet SP, – 664 m/s. The difference is significant at the level of significance α=0.05. In terms of the size of the entrance hole, the largest is from the bullet of cartridge .308 Win with a bullet SP – 10.0 cm, the smallest - from the bullet "PS" with a steel core 5.45x39 mm, cartridge sample of the year 1974 (7H6) – 1.2 cm. The difference is significant at the level of significance α=0.05. In the expansive bullet of type "V-Max" of shortgun cartridge of caliber 5.45x39 mm, the size of the entrance hole was 9.1 cm, with asterial shape having radial  gaps and turned edges of ballistic plasticine on the outside. All cartridges with expansive bullets did not have an exit hole after the shot. The dimensions of the formed residual cavity were the largest after firing with .308 Win caliber cartridge with a bullet SP – 25.0x5.0 cm., the smallest – bullet of a military caliber cartridge of 5.45x39 mm (7H6) – 6.0x4.0 cm. The difference is significant at significance level α=0.05. The shape and character of the residual cavity in ballistic plasticine was significant for all expansive bullets, in contrast to the bullet of a military cartridge 5.45x39 mm (7H6), where no such changes are detected. The considerable signs of expansion properties and deformation of the bullet in the form of a "flower of death" were identified in the bullet of caliber cartridge .308 Win with a bullet SP, other bullets with expansive properties showed significant fragmentation, with the location of fragments both in the residual cavity and outside its borders at different distances. Expansive bullets differ significantly at the level of significance α=0.05. The low flight speed of bullets (m/s) of .308 Win caliber cartridges with bullets BTHP and SP is due to their structure, weight, and caliber. Bullet of type V-max with cartridge 5.45x39 mm has the highest speed – 1185 m/s, and due to its design has significant expansive properties. Common to expansive bullets is a entrance hole, the blind nature of the lesion with the presence of a  large residual cavity, which is due to kinetic energy return 114.37 E, J/mm2 inside the object of lesion. Fragmentation of expansion bullets occurs inside an object with fragments located at different distances. A .308 Win caliber cartridge with  SP bullet causes deformation of s bullet by the type of "death flower" causing significant damage.

scholarly journals The Effect of Organic Rice Productivity on Bali Food Security: A Case Study in Subak Peguyangan Denpasar, Bali

2019 ◽  
Vol 12 (11) ◽  
pp. 22
Author(s):  
Kadek Wulandari Laksmi P ◽  
Ni Wayan Lasmi ◽  
Desak Made Sukarnasih ◽  
I Gusti Ayu Wirati Adriati
Keyword(s):  
Food Security ◽  
Primary Data ◽  
Significance Level ◽  
Rice Farmers ◽  
Organic Rice ◽  
Farmer Groups ◽  
The Difference ◽  
Food Needs ◽  
Level Of Significance

This aimed at analyzing the level of productivity of rice produced by organic rice farmers and non-organic rice farmers in Subak farmer group in Peguyangan Village, Denpasar. From these results, an efficient and effective alternative solution was further formulated by a farmer group to determine the decision on growing organic or non-organic rice. This research was prompted by the concepts of food security, theory of productivity and costs. The research used primary data sourced from subak farmer groups in Peguyangan Village, Denpasar and from documents that existed in the farmer group. The analysis results showed that the difference in the level of significance of organic rice was 0.740 while the non-organic rice had a significant level of 0.581. This result means that the level of productivity produced for organic rice is greater than that of non-organic rice. Based on these results, it is recommended that subak farmer groups in Peguyangan Village, Denpasar plant organic rice because its significance level is greater than that of non-organic rice but also not have to completely ignore growing non-organic rice to stabilize the food needs of Balinese people.

scholarly journals The Effect Of Problem Based Learning Model With Mind Mapping Technique On Biology Learning Achivement

2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Yuli Arahmat ◽  
Suratno Suratno ◽  
Bevo Wahono
Keyword(s):  
Research Result ◽  
Cognitive Learning ◽  
Problem Based Learning ◽  
Learning Model ◽  
Mapping Technique ◽  
Mind Mapping ◽  
Learning Achievement ◽  
Significance Level ◽  
The Difference ◽  
Level Of Significance

Indonesia is a country that continuous to improve and develop its education system. The development of learners abilities that are needed nowadays not only develop cognitive ability alone will be much more than that, it needs an attitude awareness in the learning process. The purpose of this research is to know the effect of the problem-based learning model with mind mapping technique. Biological material used in this study is the subject of the virus. The first research result is learning the model of learning for student cognitive learning result. Based on the results of ANAKOVA analysis shows the significance level less than 0.05, then this shows the significant effect of the difference between the learning class and control class on the learning achievement of cognitive aspects. The second research result is to test the difference of learning the result of the affective domain between problem-based learning model with mind mapping technique and conventional learning model. The result of learning effective sphere which is assessed based on direct observation covering 5 indicators namely; Discipline, daring opinion, responsibility, cooperation and tolerance, Based on the analysis One sample t-test 2 indicator shows the level of significance less than 0.05, then this shows there are significant differences 2 indicators of effective learning achievement. 2 indicators are daring opinion and cooperation.

Results of studying the dimensional accuracy of the bases of complete removable prostheses made using 3D printing and traditional technologies

2020 ◽  
pp. 34-39
Author(s):  
Vokulova Yu.A. Vokulova ◽  
E.N. Zhulev
Keyword(s):  
3D Printing ◽  
Traditional Method ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Digital Technologies ◽  
Dimensional Accuracy ◽  
3D Printer ◽  
Significance Level ◽  
Average Value ◽  
The Difference

This article presents the results of studying the dimensional accuracy of the bases of complete removable prostheses made using a 3D printer and the traditional method. Bases of complete removable prostheses were made using an intraoral laser scanner iTero Cadent (USA) and a 3D printer Asiga Max UV (Australia). To study the dimensional accuracy of the bases of complete removable prostheses, we used the DentalCAD 2.2 Valletta software. The Nonparametric Wilcoxon W-test was used for statistical analysis of the obtained data. We found that the average value of the difference with the standard for bases made using digital technologies is 0.08744±0.0484 mm. The average value of the difference with the standard for bases made by the traditional method is 0.5654±0.1611 mm. Based on these data, we concluded that the bases of complete removable prostheses made using modern digital technologies (intraoral laser scanning and 3D printer) have a higher dimensional accuracy compared to the bases of complete removable prostheses made using the traditional method with a significance level of p<0.05 (Wilcoxon's W-test=0, p=0.031). Keywords: digital technologies in dentistry, digital impressions, intraoral scanner, 3D printing, ExoCAD, complete removable dentures.

Quantitative indicators of air traffic controllers’ attitude to the danger of errors

2020 ◽  
pp. 68-78
Author(s):  
O. M. Reva ◽  
V. V. Kamyshin ◽  
S. P. Borsuk ◽  
V. A. Shulhin ◽  
A. V. Nevynitsyn
Keyword(s):  
Human Factor ◽  
Differential Method ◽  
Air Traffic ◽  
Professional Activity ◽  
Aviation Accidents ◽  
Air Traffic Controllers ◽  
The Difference ◽  
Level Of Significance ◽  
The Individual ◽  
High Level

The negative and persistent impact of the human factor on the statistics of aviation accidents and serious incidents makes proactive studies of the attitude of “front line” aviation operators (air traffic controllers, flight crewmembers) to dangerous actions or professional conditions as a key component of the current paradigm of ICAO safety concept. This “attitude” is determined through the indicators of the influence of the human factor on decision-making, which also include the systems of preferences of air traffic controllers on the indicators and characteristics of professional activity, illustrating both the individual perception of potential risks and dangers, and the peculiarities of generalized group thinking that have developed in a particular society. Preference systems are an ordered (ranked) series of n = 21 errors: from the most dangerous to the least dangerous and characterize only the danger preference of one error over another. The degree of this preference is determined only by the difference in the ranks of the errors and does not answer the question of how much time one error is more dangerous in relation to another. The differential method for identifying the comparative danger of errors, as well as the multistep technology for identifying and filtering out marginal opinions were applied. From the initial sample of m = 37 professional air traffic controllers, two subgroups mB=20 and mG=7 people were identified with statisti-cally significant at a high level of significance within the group consistency of opinions a = 1%. Nonpara-metric optimization of the corresponding group preference systems resulted in Kemeny’s medians, in which the related (middle) ranks were missing. Based on these medians, weighted coefficients of error hazards were determined by the mathematical prioritization method. It is substantiated that with the ac-cepted accuracy of calculations, the results obtained at the second iteration of this method are more ac-ceptable. The values of the error hazard coefficients, together with their ranks established in the preference systems, allow a more complete quantitative and qualitative analysis of the attitude of both individual air traffic controllers and their professional groups to hazardous actions or conditions.

scholarly journals A “Smart” Biosensor-Enabled Intravascular Catheter and Platform for Dynamic Delivery of Propofol to “Close the Loop” for Total Intravenous Anesthesia

2021 ◽  
Vol 186 (Supplement_1) ◽  
pp. 370-377
Author(s):  
Edward Chaum ◽  
Ernő Lindner
Keyword(s):  
Real Time ◽  
Drug Distribution ◽  
Population Based ◽  
Pharmacokinetic Data ◽  
Drug Infusion ◽  
Blood Concentrations ◽  
The Usa ◽  
The Difference ◽  
Automated Delivery

ABSTRACT Background Target-controlled infusion anesthesia is used worldwide to provide user-defined, stable, blood concentrations of propofol for sedation and anesthesia. The drug infusion is controlled by a microprocessor that uses population-based pharmacokinetic data and patient biometrics to estimate the required infusion rate to replace losses from the blood compartment due to drug distribution and metabolism. The objective of the research was to develop and validate a method to detect and quantify propofol levels in the blood, to improve the safety of propofol use, and to demonstrate a pathway for regulatory approval for its use in the USA. Methods We conceptualized and prototyped a novel “smart” biosensor-enabled intravenous catheter capable of quantifying propofol at physiologic levels in the blood, in real time. The clinical embodiment of the platform is comprised of a “smart” biosensor-enabled catheter prototype, a signal generation/detection readout display, and a driving electronics software. The biosensor was validated in vitro using a variety of electrochemical methods in both static and flow systems with biofluids, including blood. Results We present data demonstrating the experimental detection and quantification of propofol at sub-micromolar concentrations using this biosensor and method. Detection of the drug is rapid and stable with negligible biofouling due to the sensor coating. It shows a linear correlation with mass spectroscopy methods. An intuitive graphical user interface was developed to: (1) detect and quantify the propofol sensor signal, (2) determine the difference between targeted and actual propofol concentration, (3) communicate the variance in real time, and (4) use the output of the controller to drive drug delivery from an in-line syringe pump. The automated delivery and maintenance of propofol levels was demonstrated in a modeled benchtop “patient” applying the known pharmacokinetics of the drug using published algorithms. Conclusions We present a proof-of-concept and in vitro validation of accurate electrochemical quantification of propofol directly from the blood and the design and prototyping of a “smart,” indwelling, biosensor-enabled catheter and demonstrate feedback hardware and software architecture permitting accurate measurement of propofol in blood in real time. The controller platform is shown to permit autonomous, “closed-loop” delivery of the drug and maintenance of user-defined propofol levels in a dynamic flow model.

FDA’s reduced exposure marketing order for IQOS: why it is not a reliable global model

2021 ◽  
pp. tobaccocontrol-2020-056316
Author(s):  
Lauren Kass Lempert ◽  
Stella Bialous ◽  
Stanton Glantz
Keyword(s):  
Public Relations ◽  
Tobacco Control ◽  
Scientific Evidence ◽  
Tobacco Product ◽  
Tobacco Products ◽  
Sales And Marketing ◽  
Philip Morris ◽  
The Us ◽  
The Usa ◽  
The Difference

The US Food and Drug Administration (FDA) issued orders in July 2020 authorising Philip Morris Products S.A. to market its heated tobacco product (HTP) IQOS inside the USA with claims that it reduces exposure to some dangerous substances. FDA’s ‘reduced-exposure’ orders explicitly prohibit the marketing of IQOS with claims that IQOS will reduce harm or the risk of tobacco-related diseases. Under US law, FDA’s IQOS orders are problematic because FDA disregarded valid scientific evidence that IQOS increases exposure to other dangerous toxins and that Philip Morris Products S.A. failed to demonstrate that consumers understand the difference between reduced-exposure and reduced-harm claims. Unfortunately, both ‘reduced-exposure’ and ‘reduced-harm’ are classified as ‘modified risk tobacco products’ under US law. Exploiting this confusion, Philip Morris International used the FDA decision as the basis for marketing and public relations campaigns outside the USA to press governments to reverse policies that ban or regulate the sales and marketing of HTPs, including IQOS. Parties to the WHO Framework Convention on Tobacco Control should reject tobacco companies’ unsubstantiated explicit or implied claims of reduced harm associated with HTPs and resist Philip Morris International’s and other companies’ calls to relax HTP regulations based on the FDA’s actions. Instead, parties should adopt policies aligned with the Framework Convention on Tobacco Control when dealing with HTPs and other novel tobacco products.

The Effect of COVID-19 as an Economic Shock on the Gender and Ethnic Gap in Labour Market Outcomes

2021 ◽  
pp. 232102222110464
Author(s):  
Stefani Milovanska-Farrington
Keyword(s):  
Labour Market ◽  
Ethnic Groups ◽  
Global Economy ◽  
Policy Decision ◽  
Jel Classification ◽  
Market Outcomes ◽  
The Usa ◽  
Economic Shock ◽  
Labour Market Outcomes ◽  
The Difference

With more than 29 million confirmed cases of COVID-19 in the USA and 119 million cases worldwide, the pandemic has affected companies, households and the global economy. We explore the effect of the economic shock which resulted from this specific health event on labour market outcomes, and the changes in labour market disparities between ethnic groups and genders. The results provide evidence of an adverse effect of COVID-19 on labour market outcomes of all demographic groups, a widening gap between the employment prospects of minorities and whites, but no change in the earnings gaps between ethnic groups. We also do not find a deterioration of the differentials between genders, except the increase in the difference in the duration of unemployment between women and men with children. The findings have implications related to the priorities of policy decision-makers when implementing policies to combat ethnic and gender gaps in the labour market. JEL Classification: J70, J71, J01, J15, J23

scholarly journals Cannabis and epilepsy

2018 ◽  
Vol 18 (6) ◽  
pp. 465-471 ◽  
Author(s):  
Rhys H Thomas ◽  
Mark O Cunningham
Keyword(s):  
Treatment Options ◽  
Current Treatment ◽  
High Profile ◽  
High Street ◽  
The Usa ◽  
The Difference ◽  
The One ◽  
The Uk ◽  
Genetic Epilepsies ◽  
Trial Evidence

Click here to listen to the PodcastThe one-third of people who do not gain seizure control through current treatment options need a revolution in epilepsy therapeutics. The general population appears to be showing a fundamental and rapid shift in its opinion regarding cannabis and cannabis-related drugs. It is quite possible that cannabidiol, licensed in the USA for treating rare genetic epilepsies, may open the door for the widespread legalisation of recreational cannabis. It is important that neurologists understand the difference between artisanal cannabidiol products available legally on the high street and the cannabidiol medications that have strong trial evidence. In the UK in 2018 there are multiple high-profile reports of the response of children taking cannabis-derived medication, meaning that neurologists are commonly asked questions about these treatments in clinic. We address what an adult neurologist needs to know now, ahead of the likely licensing of Epidiolex in the UK in 2019.

scholarly journals Fuel and lubricant consumption in felling the young oak-hornbeam stands

2002 ◽  
pp. 59-66
Author(s):  
Vojislav Bajic ◽  
Milorad Danilovic
Keyword(s):  
Statistical Analysis ◽  
Analysis Of Variance ◽  
Unit Area ◽  
Function Form ◽  
Tree Diameter ◽  
Significant Difference ◽  
The Difference ◽  
Level Of Significance ◽  
Average Consumption

Based on the elements of statistical analysis on the dependence of fuel and lubricant consumption on tree diameter, it was assessed that with the increase of tree diameter, the fuel and lubricant consumption in the young oak and hornbeam stands decreases significantly, both in clear felling and in thinning and that the function form Y=exp(a+b x X?1) is the best description of the correlation The consumption of fuel compared to lubricant consumption is almost double, which agrees with the results of the previous studies. Average consumption of fuel and lubricant is 17.43 mL x tree?1, on the plots 20.27 mL x tree?1, average consumption of lubricant per tree on skid roads is 9.4 mL x tree?1, on the plots 11 mL x tree?1. The higher consumption of fuel and lubricant on the plots with selective thinning is the consequence of the longer time needed for the conversion per tree, compared to that in clear felling The consumption of fuel per unit area on the skid roads (clear felling) is 22.9 L x ha?1, on the plots (selective thinning) 7.6 L x ha?1. The consumption of lubricant on the skid roads is 13.3 L x ha?1, on the plots 4.29 L x ha?1. The higher consumption of fuel and lubricant per unit area on the skid roads is due to the difference in the number of trees per unit area Based on the results of the analysis of variance, it was found out that between fuel and lubricant consumption in selective thinning and in felling the trees along tractor skid roads there is no statistically significant difference at the level of significance of 95%. So, for practical purposes, the unique norms of consumption can be established for the stands similar to those in which the study was performed.

scholarly journals PENGARUH LATIHAN KNEE TUCK JUMP DAN LATIHAN HALF SQUAT JUMP TERHADAP KEMAMPUAN SMASH KEDENG DALAM PERMAINAN SEPAKTAKRAW

2020 ◽  
Vol 11 (3) ◽  
pp. 117
Author(s):  
Heriansyah Heriansyah ◽  
Suhartiwi Suhartiwi
Keyword(s):  
Data Analysis ◽  
Random Sampling ◽  
Male Students ◽  
Squat Jump ◽  
Significance Level ◽  
Jump Training ◽  
Analysis Technique ◽  
Significant Difference ◽  
Experiment Method ◽  
The Difference

This study aims to determine the extent of the difference in effect between knee tuck jump and half squat jump training on the ability to smash kedeng in sepaktakraw games. By using the field experiment method. The population used is male students of Southeast Sulawesi SMANKO with a sample of 60 people taken by Proposive random sampling. The data analysis technique used is the t-test at 95% significance level. The results showed that; (1) There is a significant effect of knee tuck jump training on the ability to smash kedeng in sepaktakraw games on Southeast Sulawesi SMANKO students, proven to = 13,446> tt = 2,045. There is a significant effect of half squat jump training on the ability of the Kedeng smash in sepaktakraw games on Southeast Sulawesi SMANKO students, proven to = 10.478> tt = 2.045. There is a significant difference in effect between training on the ability to smash kedeng in sepaktakraw games on Southeast Sulawesi SMANKO students, proven, to = 9,970> tt = 2,000.

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