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International Annals of Science
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  This is an Open Access Journal Open Access journal
ISSN (Online) 2456-7132
Published by AIJR Publisher Homepage  [4 journals]
  • Anticancer Herbs for Improving the Quality of Life

    • Authors: Darakhshan Qaiser, Anurag Srivastava, Afshan Qaiser
      Pages: 1 - 11
      Abstract: In the world, there are many systems of traditional medicine. Cancer is the major public health burden both in developing and developed countries. Around 50% of existing medicines for cancer treatment have plants origin. Anticancer property of some plant extracts proven to be significantly effective in the treatment of cancer. Many herbs like sadabahar, turmeric, Kalonji, cannabis, garlic, flaxseed contain active components which may be effective in prevention and treatment of many cancers. The present review focuses on the evidence of health benefit of various herbs though recent human and animal studies.
      PubDate: 2018-05-03
      Issue No: Vol. 5, No. 1 (2018)
       
  • Periodic Solution and Stability Behavior for Nonlinear Oscillator Having a
           Cubic Nonlinearity Time-Delayed

    • Authors: Yusry Osman El-Dib
      Pages: 12 - 25
      Abstract: The current paper investigates the dynamics of the dissipative system with a cubic nonlinear time-delayed of the type of the damping Duffing equation. A coupling between the method of the multiple scales and the homotopy perturbation has been utilized to study the complicated dynamic problem. Through this approach, a cubic nonlinear amplitude equation resulted in at the first-order of perturbation; meanwhile, a quintic equation appears at the second-order of perturbation. These equations are combined into one nonlinear quintic Landau equation. The polar form solution is used, and linearized stability configuration is applied to the nonlinear amplitude equation. Also, a second-order approximate solution is achieved. The numerical illustrations showed that the damping, delay coefficient, and time delay play dual roles in the stability behavior. In addition, the nonlinear coefficient plays a destabilizing influence.
      PubDate: 2018-05-23
      Issue No: Vol. 5, No. 1 (2018)
       
  • Comparative Growth Response of Three Jatropha Species on Heavy Metal
           Contaminated Soil

    • Authors: Olamilekan L Awotedu, Paul O Ogunbamowo, Bolajoko F Awotedu, Ileri-Oluwa B Emmanuel
      Pages: 26 - 32
      Abstract: This study investigated the comparative phytotoxcity effect of heavy metal contamination on Jatropha curcas, Jatropha gossypifolia and Jatropha multifida in contaminated soil from a dump site in Ibadan Nigeria. Seeds of J. curcas, J. gossypifolia and J. multifida were planted in a germination tray and later transplanted into polythene pots filled with 2kg of either control soil or heavy metal contaminated soil, a 3 × 2 factorial experiment laid out in complete randomized design (CRD) replicated four times was adopted; treatments imposed include T1 – J. curcas/Control Soil, T2 – J. gossypifolia/Control Soil, T3 – J. multifida/Control Soil, T4 – J. curcas/Contaminated soil, T5 – J. gossypifolia/Contaminated Soil, and T6 – J. multifida/Contaminated Soil. Weekly variation in growth parameters: the plant height, leave production and stem diameter were measured over the course of 12 weeks. The growth parameters were dependent on a combination of both specie type and level of heavy metal contamination of soil. J. multifida (T3) (36.93cm) performed best, comparable with J. gossypifolia (T2) (34.1cm) after 12 weeks while J. multifida (T6) had the lowest mean plant height (7.23cm) which is not significantly (p<0.05) different from other species on the contaminated soil; for leave production, J. gossypifolia (T2) produced the highest mean number of leaves (9.67) which is comparable with J. multifida (T3) (9.00) and less so with J. curcas (T1) (6.67) with significant leave losses on the contaminated soils after 12 weeks; variation in stem diameter shows that J. curcas (T1) had the highest stem girth (1.96 mm) which is comparable to the value obtained for J. curcas (T4) (1.95mm), while J. multifida (T6) had the lowest stem girth (1.09 mm). J. gossypifolia (T2) and J. multifida (T3) had comparable stem girth of 1.57mm and 1.47mm respectively. Toxicity of heavy metals in the contaminated soil greatly affect the growth parameters of the Jatropha.
      PubDate: 2018-05-24
      Issue No: Vol. 5, No. 1 (2018)
       
  • Contemporary Issues of Climate Change on Oil and Gas Industry Operations

    • Authors: Oyeleke Oluwaseun Oyerinde
      Pages: 33 - 46
      Abstract: The reality of climate change as an aspect of broader global and environmental change attributable to either natural or anthropogenic cause is becoming more evident. Equally, energy, chiefly oil and gas is not only as climate change inducer via greenhouse gas emissions anymore, but also a victim of the impacts therein. As such, this paper examines the impact of recorded changes in climatic variables on oil and gas operations categorized into upstream, midstream and downstream operations representing exploration and production, transportation, along with processing and distribution respectively. Identified changes in weather events primarily driven by general climate change having significant impact on oil and gas operations and infrastructure include increasing temperature, increasing flooding, storm surges, sea level rise, coastal erosion, intense winds and waves, drought/water shortage and subsidence/landslides/mudslides and they all pose tremendous risk to onshore and offshore (shallow and deep water) operations and installations. Several adaptation measures are currently being implemented some of which are already yielding positive results. Adaptation measures are being complemented with mitigation strategies as long-term solutions. Sadly, most developing oil producing countries are still way behind in adopting various existing adaptation measures and implementing mitigative strategies due to prevalent low capacity.
      PubDate: 2018-06-03
      Issue No: Vol. 5, No. 1 (2018)
       
 
 
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