PSVI-18 Efficiency of the use of ultrafine particles of silicon dioxide in the synchronization scheme of estrus of heifers

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 233-233
Author(s):  
Stanislav Platonov ◽  
Pavel Khristianovsky ◽  
Alexey Frolov ◽  
Oleg Zavyalov

Abstract The intensification of the reproduction of a herd of cattle requires the use of highly effective synchronization schemes for estrus. All schemes available today give a low percentage of fertilization with frontal insemination. The aim of this study was to assess the effect of ultrafine particles of silicon dioxide on fertility and the level of sex hormones in heifers during synchronization of sexual heat with subsequent frontal insemination. Ultrafine particles of silicon dioxide were injected in isotonic sodium chloride solution. The synchronization scheme included two-fold application of prostaglandin preparations; blood was taken from under the tail vein to determine the hormonal status on days 1, 11, and 14 of the experiment. The results of the study showed that ultrafine particles of silicon dioxide had a positive effect on the level of sex hormones. Concerning progesterone, the difference between the values of increase in the level in the experimental and control groups was 112.1% (P ≤ 0.01) on the 11th day. On the 14th day of the experiment, the difference between the values of the decrease level was 19.6% (P ≤ 0.05). Follicle-stimulating hormone increased by 9.1% (P ≤ 0.05) by the 14th day of the experiment compared with the previous value. In the heifers of the experimental group, the excess was more significant, i.e.15.4% (P ≤ 0.05); the level of luteinizing hormone in the experimental group on the 14th day of the experiment exceeded the level of the control by 31.1% (P ≤ 0.05). According to the results of the examination for pregnancy, an increase in fertility was revealed by 20.0% in the experimental group in comparison with the control group. This study demonstrates the potential of using ultrafine silica particles in estrus synchronization schemes for heifers to increase heifer fertility. The research was carried out in accordance with the research plan for 2019–2021. FGBNU FSC BST RAS (No. 0761-2019-0006).

2020 ◽  
Vol 15 (6) ◽  
pp. 864-871
Author(s):  
S.A. Platonov ◽  

The paper presents the results of studying the possibility of controlling the links of hormonal regulation of the reproductive cycle of cattle using silicon dioxide in an ultra-dispersed form to increase fertilization during frontal insemination. The aim of the study was to analyze the effect of silicon dioxide UDPs when used in the scheme for synchronizing the sexual cycle of heifers on the dynamics of progesterone, FSH and LH and the fertilization of animals from frontal insemination. The studies were carried out on breeding age heifers of the red steppe breed. We formed two groups by 10 heifers – the control and the experimental one. In both groups, the synchronization of estrus was carried out by double application of estrophan. In the experimental group, the animals were simultaneously injected with estrophan with a solution of silicon dioxide ultra-dispersed particles in isotonic sodium chloride solution (dose of silicon dioxide 10 μg/kg). Blood for the determination of hormones was taken from heifers on the 1st, the 11th and 14th days of the experiment. All animals were inseminated frontally with deep-frozen semen by the rectocervical method. It was found that in the experimental and control groups, the dynamics of gonadotropins during the induced sexual cycle was similar; however, the LH level before insemination in heifers of the experimental group exceeded that in the control by 0.81 ng/ml (34.4%). Fertility of heifers in the experimental group was 70.0%, in the control – 50.0%. The effect of silicon dioxide in the UDP form on the dynamics of sex hormones and the fertility of heifers from frontal insemination during estrus synchronization was studied for the first time.


2018 ◽  
Vol 29 (7) ◽  
pp. 496-503 ◽  
Author(s):  
Emine Yılmaz ◽  
Funda Kavak

The aim of this study was to determine the effects of mindfulness-based psychoeducation on internalized stigma in patients with schizophrenia. The patients were recruited from the community mental health centers. This quasiexperimental study was conducted using pretests and posttests with a control group. The participants were 69 patients with schizophrenia; 34 were part of the experimental group and 35 were part of the control group. The patients in the experimental group participated 2 days a week for 6 weeks in a total of 12 sessions which were given in the form of face-to-face group training. The difference between the scale mean posttest scores of the patients in the experimental and control groups was found to be statistically significant ( p < .05). In the intragroup comparisons, a significant difference was found between the stigma mean scores in the experimental group ( p < .05). It was concluded that mindfulness-based psychoeducation was effective in reducing stigma in patients with schizophrenia.


2017 ◽  
Vol 5 (13) ◽  
pp. 52 ◽  
Author(s):  
Ahmet Uzun ◽  
Onder Karakoc

This study was conducted to determine the effects of ten weekly plyometric training on anaerobic power in judokas. 30 male judokas participated in the study and the subjects were divided into two groups as an experimental (15 male age = 21,40 ± 1,99) and control (15 male age = 21,53 ± 1,80) groups. Judo training programme was applied in both groups for 3 days / 90 minutes per week. Experimental and control group were made warm up exercises for 20 minutes. Both groups continued with the special preparatory period judo training program. After warm up exercises, experimental group judokas were made plyometric training consisting of 15 different movements for 20 minutes. Then they were allowed to continue the judo training. As the groups showed normal distribution, Paired Samples T-Test was applied for the significance between pre-test and post-test measurements of the groups. Independent Samples T-Test was used to analyze the difference between the test group and control group. The Independent Samples T-Test was used to analyze the difference between the experimental group and the control group. As a result of the plyometric training, when the pre-test and post-test differences of the physical measurement parameters for the experimental and control groups were compared, the mean values of back strength, anaerobic power and body fat percentage were found to be significant(p0.05). As a result, it is seen that the regular plyometric exercises increase the performance of anaerobic power to judokas. It can be said that putting plyometric training besides judo training has a positive effect for performance.


2021 ◽  
Vol 9 ◽  
Author(s):  
Li-Ping Yuan ◽  
Zheng-Hao Yu ◽  
Xian-Cui Zhang ◽  
Wei Zhang ◽  
Ling-Li Jin ◽  
...  

Background: This study was conducted in order to explore the effect of psychological intervention based on the use of WeChat with coronavirus disease 2019 (COVID-19) patients.Methods: A total of 65 patients with COVID-19, from two wards, were divided into an experimental group and a control group with the ward as the basic unit. Communication concerning routine treatment and nursing was established between the medical staff and patients in the experimental group via WeChat groups. Within 48 h of admission, at 7 days, and on discharge, all 65 patients completed two self-evaluation questionnaires: the Positive and Negative Affect Schedule (PANAS) and the Hospital Anxiety and Depression Scale (HADS). Hospital stay statistics and a satisfaction survey on discharge were also collated for both groups of patients.Results: The PANAS scores of the experimental group were 26.61 ± 7.99 points on admission, 20.81 ± 5.48 points at 7 days, and 19.58 ± 6.61 points on discharge (P &lt; 0.05). The scores of HADS in the experimental group were 27.74 ± 9.35 points on admission, 12.19 ± 1.92 points at 7 days, and 11.71 ± 3.64 points on discharge (P &lt; 0.05). The differences in the PANS and HADS scores between the experimental and control groups at 7 days and on discharge were statistically significant. The discharge satisfaction ratings of the two groups of patients were 99.87 ± 0.34 and 98.68 ± 1.09 points, the difference being statistically significant (t = 5.827, P &lt; 0.05).Conclusion: Establishing WeChat groups between medical staff and patients with COVID-19 and building a bridge for better communication improved patients' positive mentality and their compliance with doctors, shortened their hospital stay, and promoted their recovery.


Author(s):  
Dang Thi Thu Huong ◽  

The current study determines the effectiveness of using task-based language instructions in teaching writing at a high school in Thai Nguyen province. The participants consist of 92 grade 10 students from Bing Yen high school, Dinh Hoa district. The study employs a mix method research design (MMR) as the plan for the research. The results of the study reveals that the results of writing performance were reported at a low level (M=3.72). The results also confirmed that the intervention worked well for the experimental group. The mean score of the pre-test (the baseline for both groups) was M=3.72. The intervention focused on TBLT instructions. After first five weeks, the means of post-test1 were M=4.96 and M=3.83 for experimental group and control group respectively. There was a significant difference between the mean of pre-test and post-test1 for the experimental group (M=3.72 compared to M=4.96), while the control group showed a little improvement (M=3.72 compared to M=3.83) the difference was not significant. After another five weeks, the difference in the mean scores of the experimental group were far more than the mean scores of the control group, M=5.56 and M=4.45 respectively. By the end of the fifteenth week of the intervention, the mean of post-test 3 of the experimental group reached M=6.41, the mean for control group was M=5.54. The difference of the mean scores in the pre-test and post-test revealed a significant improvement in both groups. However, the experimental group showed a greater improvement, M=6.41 and M=5.54 respectively. It can infer that the uses of TBLT writing instruction improved writing achievement greatly.


2019 ◽  
Vol 3 (3) ◽  
pp. 177
Author(s):  
Reni Apriliawati ◽  
Esti Hayu Purnamaningsih

Abstract. This study aimed to test the effect of training module “Kepedulian terhadap sahabat” in improving prosocial behavior of peer bystanders in middle school. This research used quasi experiment method with the untreated control group design with dependent pretest and posttest samples which separated subjects into two groups, experimental group and control group (N: 48). The subjects were bullying bystanders grade 7-8 middle school students. Instrument used in this research were knowledge test as manipulation check, prosocial scale, and a module of “Kepedulian terhadap Sahabat”. T-test was used to analyze the difference between experimental group and control group. The result shows of that “Kepedulian terhadap Sahabat” has an effect bystanders’s prosocial behavior (z=-3.799, p=0.01) on middle schoolstudents. Keywords: bullying bystanders; prosocial behavior; social-emotional learning


2018 ◽  
Vol 4 (2) ◽  
pp. 84
Author(s):  
Ihsan Habib Siregar ◽  
Hairul Anwar Dalimunthe

<p><em>This study aims to see the influence of self-development training to member loyalty. Research subjects are 40 members of Formasi Ar-Ruuh UMA. The samples were divided into experimental groups (Trained) and control groups (No training). Using 50 instruments of loyalty as a measuring instrument. Data analysis techniques using Wilcoxon Test, with the following results: 1. There’s influence of training on experimental group, significance coefficient 0.005. p 0.005 &lt;0.05, hypothesis is accepted. 2. There’s no significant increase in the control group. p = 0,513. p 0,513&gt; 0,05, hypothesis is rejected. 3. There’s no significant difference between the two groups, p = 0.225. p 0.225&gt; 0.05, hypothesis is rejected. The experimental group further increased its loyalty score by a pretest average of 125.85, the posttest rising to 130.25. The control group obtained a pretest average of 124.75, the posttest rising to 125.00. Self-development training affects loyalty improvement with pretest empirical mean experimental group 125,85, pretest control group 124,75, posttest experimental group 130,25, posttest control group 125,00. The empirical average value is greater than the hypothetical value (100) and the difference over the SD number is 11.440, 16.227, 5.447, 16.387.</em></p>


2018 ◽  
Vol 5 (1) ◽  
pp. 28
Author(s):  
Wiwik Alwiah ◽  
Mansur Akil

This study aimed at investigating the effectiveness of the use of the systemic approach to improve students’ understanding on adjectives materials related to the use, usage, synonym, antonym, spelling, pronunciation, collocation, meaning, and order. This research employed a quasi-experimental design. The populations were the third-semester students of Muhammadiyah University of Makassar in academic year 2017/2018. The sample consisted of 40 students chosen from two classes by using purposive sampling technique then were divided into two groups, namely experimental and control group. The difference between experimental and control class was based on the teaching technique used during the treatment. While the experimental class was taught by using systemic approach, control class was taught by using the conventional method.The instruments of this research were adjective tests. The data was analyzed by using statistical analysis on SPSS for Windows 20.0 program. As per data, experimental group experienced improvement on their understanding on adjectives in terms of use, usage, meaning, spelling, pronunciation, synonym, antonym, collocation, and order indicated by the post-test mean score (77.1) which was significantly higher than that of the control class (59.7) and the gain of experimental group (31.2) which was higher than control group (17.4). Another supporting indicator is the t-test value which was higher than the t-table value (4.022 > 1.75). Furthermore, the researcher found that the element of adjective which experienced most significant increase on its mastery happened on the usage, while the lowest one was the collocation. The result of this research indicated that there was significant improvement between experimental and control class. It means that systemic approach that was applied in experimental group can improve the students’ mastery on adjectives material. Thus it was concluded that the systemic approach was effective to improve students’ on adjectives.


2015 ◽  
Vol 7 (2) ◽  
pp. 33-43
Author(s):  
SARA WAWRZYNIAK ◽  
ANDRZEJ ROKITA ◽  
DAMIAN PAWLIK

Background: The aim of the study was to determine the level and changes in the level of temporal-spatial orientation in first-grade pupils from elementary schools who participated in Physical Education classes integrated with subject-related contents that used Edubal educational balls. Material/Methods: Research material comprised first-grade pupils from two classes in an elementary school in Wroclaw, Poland. The study was carried out during the second term of the 2013/2014 school year. Fifty-four pupils (26 girls and 18 boys) were diagnosed in total. The study employed the method of a pedagogical experiment that used the parallel groups technique (experimental class and control class). Results: In the first examination, pupils from the control group obtained better results compared to pupils from the experimental group (p=0.04). In the second examination, pupils from the experimental class obtained better results compared to those from the control group. However, the difference between the results obtained in both groups was not statistically significant (p = 0.87). Conclusions: The results obtained in the study lead to a conclusion that it is justified to carry out further studies in order to evaluate the level and possible changes in temporal-spatial orientation in first-grade pupils from elementary school who participate in Physical Education classes that use Edubal educational balls and to search for the relationships between the pupils’ temporal-spatial orientation and school performance.


2017 ◽  
Vol 1 (1) ◽  
pp. 20
Author(s):  
Tri Ramadhani ◽  
Bondan Fajar Wahyudi

<p><em>Dengue vector control has been done in various ways, however, has not been able to obtain optimal </em><em>results. Ovirap use to determine the presence of Aedes sp in a region is often done, but the application </em><em>of lethal ovitrap for population control Aedes sp still rarely done. This study was aimed to assess the </em><em>effect of LO applications on populations of Aedes sp. </em></p><p><em></em><em>This research includes quasi experimental design with a pretest-posttest control group without </em><em>randomization. Research sites in dengue in endemic areas in Banyumas district, with a total sample of </em><em>100 homes in each treatment and control areas. Insecticides used on ovistrip is cypermethrin at a dose </em><em>of 12.5 mg ai/strip. Populations of Aedes sp measured each week for three weeks prior to the </em><em>intervention and twelve weeks during the intervention. The mean density of Aedes sp compared before </em><em>and after intervention and between treatment and control areas.</em><br /><em>The study showed the difference of mosquito densities before and after the intervention in the </em><em>experimental group was 0,07 ( p-value 0.044), whereas the control group was 0.037 (p-value 0.341). </em><em>LO use with the addition of insecticide active ingredient cypermetrin on ovistrip impact on the decline </em><em>density of Aedes sp.</em></p>


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