scholarly journals Efficacy of tertiary egg membranes as calcium zones for embryonic development in poultry breeds

2020 ◽  
Author(s):  
Siny George Benjamin ◽  
Kurian Mathew Abraham ◽  
N.J. Nandini
Keyword(s):  
Embryonic Development ◽  
Animal Husbandry ◽  
Calcium Content ◽  
Poultry Production ◽  
Before And After ◽  
Technological Intervention ◽  
Egg Shell ◽  
Set Up ◽  
Domestic Variety ◽  
Calcium Utilization

Abstract Background Growth and production of any animal husbandry including poultry depends on early development, growth, feeding, environmental and other factors. Early and later embryonic development forms a significant parameter in poultry production, during which human or technological intervention is practically impossible. Results Embryonic development is governed by very many internal factors among which, egg calcium utilization is of prime importance. An experiment was set up to investigate the egg calcium utilization of different poultry breeds at its embryonic development. Four breeds of locally available chicken ( Gallus gallus domesticus ), Broiler, Common domestic variety ( Nadan ), Vanaraja and Gramapriya breeds were selected and embryonic egg utilization was assessed by comparing calcium content of egg shell before and after hatching and found out that Vanaraja breed utilizes maximum (0.20gm) and significantly (P < 0.01) higher quantity egg shell calcium for embryonic development followed by Local breed (0.16gm) and least used variety was Broiler breed (0.09gm). Conclusions The study highlighted the criticality of the composition of the specific mineral in the calcium zones for embryonic utilization underlining the importance of its only source through food.

scholarly journals Impact study on model livestock community development programme in some selected areas of Bangladesh

2020 ◽  
Vol 20 (1-2) ◽  
pp. 88-100
Author(s):  
MT Uddin ◽  
MM Islam ◽  
M Nasrin
Keyword(s):  
Production Systems ◽  
Economic Status ◽  
Sampling Technique ◽  
Simple Random Sampling ◽  
Poultry Production ◽  
Impact Study ◽  
Technological Support ◽  
Before And After ◽  
Technological Intervention ◽  
The Impact

With a view to increase the productivity of existing backyard livestock and poultry production systems and thereby to improve the socio-economic status of the rural people, BLRI in collaboration with the Department of Livestock Services (DLS) initiated the study since April 2010. The specific objectives of the study were to disseminate the livestock technologies for increasing productivity through training and demonstration and to assess the impact of technological interventions on livestock productivity, socioeconomic improvement and changing livelihood status of rural farm families. The study was implemented initially at Kadamtoli under Belkuchi  Upazila under Serajganj district and Chakpara and Bichamara villages under Naikhongchari Upazila under Banderban district which was later extended to Talukhabu village of Gongachara Upazila under  Rangpur district. Through this project, technological support was provided to a total of 321, 218 and 780 farm households in Belkuchi, Naikhongchari and Gangachara upazila, respectively. In order to conduct the impact study, 90 farmers taking 30 from each Upazila were selected through simple random sampling technique. The ‘before’ and ‘after’ comparison was followed for assessing the impact. The t-statistic was applied to test the significance of relevant parameters. It was revealed that technological intervention has resulted to increase in livestock and poultry population and increase in productivity of milk (19-40%), duck and chicken eggs (22-36%) both horizontally and vertically. There was no occurrence of death of cattle, goat and poultry birds. Farmer’s overall income was boosted up which has contributed to possession of new household assets and addition of the already available assets. The consumption of all food items was increased as well. It was recommended that the programme may be replicated to other locations with new interventions. Bangladesh J. of Livestock Res. 20(1-2): 88-100, Jan-Dec 2013

Evaluation of Freezing Methods by Low Temperature X-Ray Diffraction

1977 ◽  
Vol 35 ◽  
pp. 330-333
Author(s):  
T. Gulik-Krzywicki ◽  
M.J. Costello
Keyword(s):  
Biological Materials ◽  
Molecular Organization ◽  
X Ray Diffraction ◽  
Glass Capillary ◽  
X Ray ◽  
Rate Dependent ◽  
Before And After ◽  
Freeze Etching ◽  
Diffraction Patterns ◽  
Set Up

Freeze-etching electron microscopy is currently one of the best methods for studying molecular organization of biological materials. Its application, however, is still limited by our imprecise knowledge about the perturbations of the original organization which may occur during quenching and fracturing of the samples and during the replication of fractured surfaces. Although it is well known that the preservation of the molecular organization of biological materials is critically dependent on the rate of freezing of the samples, little information is presently available concerning the nature and the extent of freezing-rate dependent perturbations of the original organizations. In order to obtain this information, we have developed a method based on the comparison of x-ray diffraction patterns of samples before and after freezing, prior to fracturing and replication.Our experimental set-up is shown in Fig. 1. The sample to be quenched is placed on its holder which is then mounted on a small metal holder (O) fixed on a glass capillary (p), whose position is controlled by a micromanipulator.

Research on pull-type multi-AGV system dynamic path optimization based on time window

2021 ◽  
pp. 095440702098271
Author(s):  
Hongying Shan ◽  
Chuang Wang ◽  
Cungang Zou ◽  
Mengyao Qin
Keyword(s):  
Path Planning ◽  
Time Window ◽  
Planning Problem ◽  
Dijkstra Algorithm ◽  
Before And After ◽  
Common Planning ◽  
Planning Algorithm ◽  
Dynamic Path ◽  
Set Up ◽  
Path Planning Algorithm

This paper is a study of the dynamic path planning problem of the pull-type multiple Automated Guided Vehicle (multi-AGV) complex system. First, based on research status at home and abroad, the conflict types, common planning algorithms, and task scheduling methods of different AGV complex systems are compared and analyzed. After comparing the different algorithms, the Dijkstra algorithm was selected as the path planning algorithm. Secondly, a mathematical model is set up for the shortest path of the total driving path, and a general algorithm for multi-AGV collision-free path planning based on a time window is proposed. After a thorough study of the shortcomings of traditional single-car planning and conflict resolution algorithms, a time window improvement algorithm for the planning path and the solution of the path conflict covariance is established. Experiments on VC++ software showed that the improved algorithm reduces the time of path planning and improves the punctual delivery rate of tasks. Finally, the algorithm is applied to material distribution in the OSIS workshop of a C enterprise company. It can be determined that the method is feasible in the actual production and has a certain application value by the improvement of the data before and after the comparison.

scholarly journals Wear and Friction Characteristics of 65Mn Steel for Spike-Tooth Harrow

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 319
Author(s):  
Zhiguo Lu ◽  
Chuanyu Du ◽  
Qingcai Chen ◽  
Tianying Niu ◽  
Na Wang ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Working Environment ◽  
Manganese Steel ◽  
Wear Loss ◽  
Variable Parameters ◽  
Wear Characteristics ◽  
Before And After ◽  
Set Up ◽  
Worn Surface ◽  
Friction And Wear Characteristics

The friction and wear characteristics of spike-tooth material (65Mn steel) of Spike-Tooth Harrow in a two-stage peanut harvester were studied in this paper. The friction and wear tests of pin and disc on 65 manganese steel were carried out on the tribometer, then the wear loss and the friction coefficient were studied. The wear loss of the pin was acquired by calculating the mass of the pin before and after the experiment using an electronic balance. According to the actual working environment of peanut spring-finger, four variable parameters are set up: load, speed, soil moisture and soil type. The friction and wear characteristics of pins were studied under different loads, speeds and different soil environments. After wearing, the worn surface of the material was observed by scanning microscope and the wear mechanism was studied. The experimental results show that the wear of the pin increases with the increase of load and decreases with the increase of rotational speed in the same rotation number. Especially in the case of the sandy soil with 20% in moisture, a maximum wear loss of the pin is achieved.

scholarly journals Innovative passive reinforcements for the gradual stabilization of a landslide according with the observational method

Landslides ◽  
2021 ◽  
Author(s):  
Lorenzo Brezzi ◽  
Alberto Bisson ◽  
Davide Pasa ◽  
Simonetta Cola
Keyword(s):  
Monitoring System ◽  
Low Cost ◽  
Economic Losses ◽  
Fe Model ◽  
Site Conditions ◽  
Observational Method ◽  
Rainy Period ◽  
Sustainable Solutions ◽  
Before And After ◽  
Set Up

AbstractA large number of landslides occur in North-Eastern Italy during every rainy period due to the particular hydrogeological conditions of this area. Even if there are no casualties, the economic losses are often significant, and municipalities frequently do not have sufficient financial resources to repair the damage and stabilize all the unstable slopes. In this regard, the research for more economically sustainable solutions is a crucial challenge. Floating composite anchors are an innovative and low-cost technique set up for slope stabilization: it consists in the use of passive sub-horizontal reinforcements, obtained by coupling a traditional self-drilling bar with some tendons cemented inside it. This work concerns the application of this technique according to the observational method described within the Italian and European technical codes and mainly recommended for the design of geotechnical works, especially when performed in highly uncertain site conditions. The observational method prescribes designing an intervention and, at the same time, using a monitoring system in order to correct and adapt the project during realization of the works on the basis of new data acquired while on site. The case study is the landslide of Cischele, a medium landslide which occurred in 2010 after an exceptional heavy rainy period. In 2015, some floating composite anchors were installed to slow down the movement, even if, due to a limited budget, they were not enough to ensure the complete stabilization of the slope. Thanks to a monitoring system installed in the meantime, it is now possible to have a comparison between the site conditions before and after the intervention. This allows the evaluation of benefits achieved with the reinforcements and, at the same time, the assessment of additional improvements. Two stabilization scenarios are studied through an FE model: the first includes the stabilization system built in 2015, while the second evaluates a new solution proposed to further increase the slope stability.

Reducing Culture Reporting Errors in the Microbiology Laboratory

2019 ◽  
Vol 152 (Supplement_1) ◽  
pp. S131-S132
Author(s):  
Kathryn Hogan ◽  
Beena Umar ◽  
Mohamed Alhamar ◽  
Kathleen Callahan ◽  
Linoj Samuel
Keyword(s):  
Real Time ◽  
Error Rate ◽  
Reporting System ◽  
Error Rates ◽  
Tracking Errors ◽  
Corrective Measures ◽  
Safety Awareness ◽  
Before And After ◽  
Set Up ◽  
System Errors

Abstract Objectives There are few papers that characterize types of errors in microbiology laboratories and scant research demonstrating the effects of interventions on microbiology lab errors. This study aims to categorize types of culture reporting errors found in microbiology labs and to document the error rates before and after interventions designed to reduce errors and improve overall laboratory quality. Methods To improve documentation of error incidence, a self-reporting system was changed to an automatic reporting system. Errors were categorized into five types Gram stain (misinterpretations), identification (incorrect analysis), set up labeling (incorrect patient labels), procedures (not followed), and miscellaneous. Error rates were tracked according to technologist, and technologists were given real-time feedback by a manager. Error rates were also monitored in the daily quality meeting and frequently detected errors were discussed at staff meetings. Technologists attended a year-end review with a manager to improve their performance. To maintain these changes, policies were developed to monitor technologist error rate and to define corrective measures. If a certain number of errors per month was reached, technologists were required to undergo retraining by a manager. If a technologist failed to correct any error according to protocol, they were also potentially subject to corrective measures. Results In 2013, we recorded 0.5 errors per 1,000 tests. By 2018, we recorded only 0.1 errors per 1,000 tests, an 80% decrease. The yearly culture volume from 2013 to 2018 increased by 32%, while the yearly error rate went from 0.05% per year to 0.01% per year, a statistically significant decrease (P = .0007). Conclusion This study supports the effectiveness of the changes implemented to decrease errors in culture reporting. By tracking errors in real time and using a standardized process that involved timely follow-up, technologists were educated on error prevention. This practice increased safety awareness in our micro lab.

Frey's syndrome: treatment with botulinum toxin

1997 ◽  
Vol 111 (9) ◽  
pp. 839-844 ◽  
Author(s):  
A. Bjerkhoel ◽  
O. Trobbe
Keyword(s):  
Botulinum Toxin ◽  
Botulinum Toxin A ◽  
Surgical Techniques ◽  
Frey’S Syndrome ◽  
Need For Treatment ◽  
Gustatory Sweating ◽  
Parotid Surgery ◽  
Frey's Syndrome ◽  
Before And After ◽  
Set Up

AbstractFrey's syndrome, i.e. gustatory sweating on the cheek, is a fairly common embarrassment after parotid gland surgery. New surgical techniques have been proposed to avoid this complication, but are not widely in use. Hence, there is need for treatment of Frey's syndrome. All surgical and topical treatments have drawbacks. This study was set up in order to evaluate a recently described treatment. One hundred and two patients were interviewed after parotidectomy. Thirty-one of them had noticed gustatory sweating and 15 patients underwent Minor's starch iodine test before, and after, treatment with intracutaneous injections of botulinum toxin A (Botox®, Allergan Inc., USA). Thirteen of the patients did not experience any gustatory sweating at follow-up (one to 13 months). Minor's starch test showed total disappearance of gustatory sweating in 12 of the 15 treated patients. The only side effect was a discreet, transitory affection of the orbicularis oris muscle in one patient. As this treatment is minimally invasive it could be an attractive treatment for Frey's syndrome if the effect is maintained. Complaints of local hypoaesthesia and pain were also common after parotid surgery.

scholarly journals METHOD OF DISCUSSION DURING LESSONS OF SURROUNDING WORLD LEARNING: THEORY, POSSIBILITIES AND RESULTS

2009 ◽  
Vol 6 (2) ◽  
pp. 19-30
Author(s):  
Rita Makarskaitė-Petkevičienė ◽  
Jurgita Pitrėnaitė
Keyword(s):  
Waste Management ◽  
Primary Education ◽  
Teaching Methods ◽  
Waste Dump ◽  
Surrounding World ◽  
Educational Role ◽  
Before And After ◽  
Set Up ◽  
Fourth Form

Discussion in the process of teaching refers to a more sophisticated form of conversation, which is more frequently applied working with senior school learners. Problems rather than facts or phenomena are discussed. The question rises if the method of discussion is relevant in lessons of surrounding world learn-ing and whether it enables school learners to acquire knowledge, facilitates its memorisation or allows to ar-rive at solutions to urgent problems. The research involved 18 second formers, 15 school learners of fourth form and 13 students. All the groups of respondents discussed the same problem. Different roles were assigned to the participants in the discussion (a number of respondents represented heads of waste management company, whereas the rest assumed roles of residents of area where waste dump was being set up) and they involved in discussions of issues related to waste management and waste dump establishment. A considerable difference in the results of questionnaires provided to the participants before and after the discussion was observed. It is obvious that the respondents not only gained knowledge but also acquired a different perception and understanding of the problems analysed in the discussion. However, the compari-son of all the results of the survey revealed a stronger educational role of the discussion teaching fourth for-mers. This confirms theoretical statements that this method is more effective with senior school learners. The group of students also found the discussion useful. Key words: primary education, teaching of surrounding world learning, teaching methods, discussion.

scholarly journals TRANSITION TO THE SECOND GREEN REVOLUTION IN THE CONDITIONS OF ACCOUNT TO DIGITAL ECONOMY

2018 ◽  
Keyword(s):  
World War Ii ◽  
Information And Communication Technologies ◽  
Green Revolution ◽  
Animal Husbandry ◽  
Digital Economy ◽  
Digital Information ◽  
World War ◽  
Before And After ◽  
Information And Communication ◽  
The Moment

the problems of the transition to the second green revolution in the context of tak-ing into account the digital economy were considered from the state of the moment of Russian agri-culture in 1913, taking into account both the yield, harvesting and export of cereals and the number of horses and cattle before and after the First World War, after the Civil War, on the eve and after World War II. The situation of mechanization of agriculture and the transition to intensive produc-tion and supply by defense consumers with the transition to the first green revolution and the inten-sive development of animal husbandry with the Italian technology of megacomplexes of pig and poultry farming with the import of corn to feed them are considered. The balance of feed is practically not achieved due to the intensive export of cereals, mainly wheat, corn and soybeans abroad. The increase in the production of various grain crops is currently possible only due to the transition to intensification of their production, the introduction of biomineral fertilizers in the framework of the second green revolution and the consideration of the prospects of digital information and communication technologies in the development of the digital economy.

Studies of the Egg of Bacillus libanicus (Orthoptera, Phasmidae)

1950 ◽  
Vol s3-91 (14) ◽  
pp. 195-203
Author(s):  
A. MOSCONA
Keyword(s):  
Carbon Dioxide ◽  
Calcium Carbonate ◽  
Embryonic Development ◽  
Moisture Content ◽  
Mineral Content ◽  
Calcium Deficiency ◽  
Egg Shells ◽  
Egg Shell ◽  
Short Time ◽  
Initial Mineral

1. Weight, moisture content, and mineral content of freshly laid and of fully developed eggs of Bacillus libanicus (Uv.) were studied. During development of the embryo the egg-shell loses 19 per cent, of its initial mineral content, while the weight of mineral materials in the embryo increases correspondingly. 2. These changes can be explained only as resulting from transfer of minerals from the shell to the embryo. The mineral materials are derived from the calcium carbonate layer of the shell, which, owing to this loss, becomes thinner during embryonic development. 3. It is suggested that the mechanism of this transfer is based on the production of bicarbonate by the reaction of water and carbon dioxide, given off by the embryo, with the calcium carbonate of the shell. 4. Experimental calcium deficiency in the egg-shells results in a marked lowering of the viability of the embryos; although embryogenesis may sometimes proceed till the hatching stage, the few emerging nymphs survive only for a short time. 5. The possible occurrence of mineral transfer in other phasmid eggs is indicated.

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