International Journal of Natural Sciences Research

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Probiotic Lactobacterin-Tk2 Therapeutic and Prophylactic Efficiency

Pages: 1-5
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Probiotic Lactobacterin-Tk2 Therapeutic and Prophylactic Efficiency

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DOI: 10.18488/journal.63.2018.61.1.5

Tulemisova Zh.K. , Kasenova G.T. , Muzapbarov B. , Myktybayeva R.Zh. , Boranbayeva T.K. , Omarova A.B.

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Tulemisova Zh.K. , Kasenova G.T. , Muzapbarov B. , Myktybayeva R.Zh. , Boranbayeva T.K. , Omarova A.B. (2018). Probiotic Lactobacterin-Tk2 Therapeutic and Prophylactic Efficiency. International Journal of Natural Sciences Research, 6(1): 1-5. DOI: 10.18488/journal.63.2018.61.1.5
Annotation. The therapeutic and prophylactic efficacy of the “Lactobacterin-TK2” probiotic for correction of clinical and microbiological changes in diarrhea of calves under farming conditions has been studied. The therapeutic efficacy showed that the drug product results in complete recovery. Findings on the calves' productivity showed that animals in the experimental groups grew more intensively than animals in the control group during the drug product administration by calves. Use of “Lactobacterin-TK2” probiotic in the treatment and prevention of gastrointestinal infections in calves has provided 100% therapeutic and preventive efficacy. We believe that the effect has been obtained due to the sanitation of the animals intestines from pathogenic flora by suppressing of pathogenic and conditionally pathogenic bacteria reproduction with lactobacilli as a result of their antagonistic activity and colonization of the intestine freed ecological niche with normal microbial flora, stimulation of humoral and cellular immunity factors, level of nonspecific resistance of the organism, activation of metabolic processes, normalization of intestinal microbiocenosis in calves. All this immediately influenced the improvement of digestion processes, which led to more intensive growth and development of animals.
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Laboratory Evaluation of ITS Test on Asphalt Modified with Various Ranges of Crumb Rubber

Pages: 6-14
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Laboratory Evaluation of ITS Test on Asphalt Modified with Various Ranges of Crumb Rubber

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DOI: 10.18488/journal.63.2018.61.6.14

Asmaa Abdulmaged MAMHUSSEINI , Barham Jalal NAREEMAN

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Asmaa Abdulmaged MAMHUSSEINI , Barham Jalal NAREEMAN (2018). Laboratory Evaluation of ITS Test on Asphalt Modified with Various Ranges of Crumb Rubber. International Journal of Natural Sciences Research, 6(1): 6-14. DOI: 10.18488/journal.63.2018.61.6.14
The rubber which is generated from scrap tyres (tires), identified by crumb or powdered rubber. Day after day, discarded or scrap tyres create huge environmental problems. As long as the scrap tyres are regarded as a non-decade material those disrupt the clean environment. Using this rubber in pavement and asphalt has become a great interest and proposal for researchers for overcome this issue in recent years. Researchers and engineers discovered another way to improve asphalt concrete, by adding crumb rubber (CR) into asphalt concrete. This is done by two methods; first method rubber placed in bitumen and completely or partially reacted with bitumen, this will become binder modifier (wet process). Second method replacing this rubber with fine aggregates which are not dissolved completely with bitumen (dry process). In this study crumb rubber is added into mixture initially by substituting rubber with amount of fine aggregate. Thereafter laboratory tests; penetration, ductility, softening point, elastic recovery and moisture susceptibility test were conducted. These tests were performed, investigated and compared to evaluate the effect of indirect tensile strength (ITS) on asphalt concrete modified with several ranges of crumb rubber. It has been shown that (0%) is control sample, while (2, 4, 6, 8 and 10) are percent of rubber by the total weight of aggregate. One of the critical issues in asphalt pavement is moisture damage. The existence of moisture play a great role in reducing the stiffness of the asphalt mix as well as makes the chance for stripping of the asphalt from the aggregate. This study evaluates the strength loss by comparing two methods of ITS test, which are conditioned (tested in saturated state) and unconditioned (tested in dry state) samples. Marshall Mix method was applied for preparation of total 24 samples for both states of ITS. The results show that for conditioned samples 6% of CR gives the highest value of tensile strength, (892) Kpa. While in unconditioned samples, 10% of CR gives even higher value of strength, compared to conditioned and control sample, (933) Kpa. According to AASHTO T 283-14, the tensile strength ratio (TSR) results of all samples are within the standards, using the minimum value of 80%. For asphalt modified with (2, 4, 6, 8 and 10) % of CR, the TSR values are (95.3, 97.7, 97.4, 93.6 and 90.9) % respectively. Moreover the results are discussed in detail in this study. As summary, the optimal dose of CR is 4% which gives better performance for penetration, softening point, elastic recovery and tensile strength ratio.
Contribution/ Originality
This study contributes in the existing literature, to investigate the binding medium between concrete asphalt with crumb rubbe. This study uses new methodology which is called Wet Process, mixing crumb rubber with asphalt prior to the aggregate. This study originates new formula to improve asphalt and asphalt concrete. This study is one of very few studies which have investigated tensile strength ratio (TSR) by using Indirect Tensile Strength Test, and elastic recovery for conventional mixture.

A Behavioral Study of Cylindrical Object Impacted by Bullet Using FEA

Pages: 15-22
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A Behavioral Study of Cylindrical Object Impacted by Bullet Using FEA

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DOI: 10.18488/journal.63.2018.61.15.22

Tanadon Saisueb , Pattaraweerin Woraratsoontorn

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Tanadon Saisueb , Pattaraweerin Woraratsoontorn (2018). A Behavioral Study of Cylindrical Object Impacted by Bullet Using FEA. International Journal of Natural Sciences Research, 6(1): 15-22. DOI: 10.18488/journal.63.2018.61.15.22
Crime news has now become a popular mass media topic with offenders often using pocketknives and firearms. Pocketknives are inexpensive and easily obtained while in Thailand firearms have also become readily available. Some people are lucky and survive gunshot wounds; articles carried in their shirt pockets, especially a metal pen, may increase survival chances. Deformation behavior of a cylindrical object and a stainless steel pen impacted by a 9 mm FMJ (full metal jacket) bullet were investigated under various conditions. Finite element analysis (FEA) was applied to simulate different shooting conditions. Comparison of FEA shooting test simulation results revealed that a cylindrical object and stainless steel pen behaved in a similar manner. Simulation results can be useful to support forensic science examinations. Analysis of the findings indicated that having a stainless steel pen in your shirt pocket may improve the chances of surviving a bullet wound.
Contribution/ Originality
This study is one of very few studies which have investigated the chances of survival after being shot by a bullet. A simplified cylindrical object was used to replicate a stainless steel pen with a simulation using 3D finite element analysis.

The Study of the Landscape Restoration and Reuse of Foreign Company Facilities in Tamsui, Taiwan

Pages: 23-30
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The Study of the Landscape Restoration and Reuse of Foreign Company Facilities in Tamsui, Taiwan

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DOI: 10.18488/journal.63.2018.61.23.30

Chih-Yuan, Chang

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Chih-Yuan, Chang (2018). The Study of the Landscape Restoration and Reuse of Foreign Company Facilities in Tamsui, Taiwan. International Journal of Natural Sciences Research, 6(1): 23-30. DOI: 10.18488/journal.63.2018.61.23.30
This paper discusses both the surviving and now-disappeared foreign company facilities in Tamsui. The discussion topics include historical analysis of foreign firms and suggestions for preservation and reconstruction. The methodology of this study combines historical research of architecture with discussion of the cultural landscape, and proposes a discussion of lost landscapes and the preservation of the existing foreign company facilities in Tamsui. The Shell Company and the Douglas Lapraik & Co. warehouses in Tamsui are the witness and the cases of well-preserved with a scarcity value. These cases warrant preservation as a heritage site based on their historical value and for reasons of environmental sustainability. A representation of the foreign company storage and sites should be displayed in the Tamsui eco-museum for inclusion with the other historical heritage areas in Tamsui.
Contribution/ Originality
This study is one of very few studies which have investigated the surviving and now-disappeared foreign company facilities in Tamsui. The methodology combines historical research of architecture with discussion of the cultural landscape.