Mathematical Modeling: Magneto-Thermoelastic Waves Propagation and Some Applications | Book Publisher International

 

In this book, an investigation has been made for mathematical modelling: magneto-thermoelastic waves' propagation and some applications in diverse fields as acoustics, aerospace, astronomy, geophysics, earthquakes, volcanoes, engineering and others. The fundamental and basic concepts and equations presented for the electro-thermoelasticity with external effects as gravity, rotation, initial stress and hydrostatic initial stress, as well as two-temperature, voids, diffusion, semiconducting, thermal relaxation times and thermal shock. The dissertation work reported here is originally motivated by several connections between elasticity, thermal field, electromagnetic field, rotation, initial stress, voids, photothermal, semiconducting, and diffusion. The effect of rotation, electromagnetic field, voids, diffusion, semiconducting, and thermal relaxation time will be studied on the waves' propagation (i.e., either waves' propagation "reflection and/or refraction" or "surface waves: Stoneley, Love, and Rayleigh"). Due to the coupling of the equation of motion, heat equation, and void equation in the context of generalised magneto-thermoelasticity, the work done in this field is unfortunately limited in number. The secular equation, Stoneley waves' velocity and attenuation coefficients are affected by the external parameters, such as the magnetic field, rotation, voids, and relaxation time. The finite difference technique under the effectiveness of rotation and decayed heat flux on the obtained components was graphically drawn. Numerical results of the problems solved are displayed by sample graphs.

Author(s) Details

Professor Elsayed Mohamed Abo-Dahab Khedary
Mathematics Department, Faculty of Science, South Valley University, Qena, 83523, Egypt.

 

Please see the book here:- https://doi.org/10.9734/bpi/mono/978-81-989994-3-6

 

Vegetative Propagation of Medicinal Plant on Sambiloto (Andrographis paniculata (Burm.f.) Wall. ex Nees | Chapter 3 | Research Perspective on Biological Science Vol. 1

Aims: To determine the effect of node stem cuttings position on the growth and yield of sambiloto (Andrographis paniculata (Burm. f.) Wall. ex Nees. It belongs to the family Acanthaceae, which has been cultivated and grows widely in Indonesia.

Methodology: The experiment was conducted in Purwodadi Botanic Garden in February-May 2017 at an altitude of 300 m above sea level. An experimental study design was followed for the study. The study used a randomized block design with the treatment of node position of stem cuttings, i.e. top, middle, and basal parts. Each treatment was replicated three times.

Results: The top stem cutting produced the highest cutting life, leaf area, leaf dry weight, root, and generative organs dry weight. In contrast, the basal stem cutting produced the lowest live cutting and plant growth.

Conclusion: The top stem cutting propagation of sambiloto produced the highest plant survival and growth with cutting life, leaf area, leaf dry weight and total dry weight of 100%, 162.40 cm2 per plant, 0.49 g per plant, 1.03 g per plant, respectively.

 

Author (s) Details

 

Solikin
Research Center for Ecology and Ethnobiology, National Research and Innovation Agency Jl. Raya Jakarta Bogor Km 46, Cibinong, Bogor West Java 16911, Indonesia.

 

Please see the book here:- https://doi.org/10.9734/bpi/rpbs/v1/4561

Berberis aristata: An Endangered High Value Medicinal Shrub of Western Himalayas in Peril | Chapter 1 | Advanced Concepts in Pharmaceutical Research Vol. 9

 Berberis aristata DC. commonly known as “Daru haldhi and Chitra” is a spinous shrub native to the northern Himalayan region. The plant is widely distributed from the Himalayas to Srilanka, Bhutan and Jammu and Kashmir. It is mainly propagated through seeds, self-sown in nature. Propagation through cuttings has also been reported. Berberis aristata has been used in Ayurvedic medicines for a long time. The plant is used traditionally in inflammation, wound healing, skin disease, jaundice and infection of the eyes. The berries are edible and rich in vitamin C. A highly valuable Ayurvedic preparation ‘Rasaut’ is prepared from the root of the plant and is used in curing human ailments like ophthalmic, ulcers as a laxative, tonic and blood purifier. High demand for local usage as well as for pharmaceuticals creates serious pressure on the plant which already categorized the plant as an “endangered” species per (IUCN) criteria.  Phytochemical studies show that the plant B. aristata contains mainly yellow colored Berberine, oxyberberine, berbamine, aromoline and palmatine. The plant has effective pharmacological action and shows a promising future for further researchers.

Author(s) Details:

Dr. A. R. Malik,
Division of Forest Products & Utilization, India.

Nisha Tariq
Division of Forest Products & Utilization, India.

Dr. P. A. Sofi
Division of Forest Products & Utilization, India.

Dr. Amerjeet Singh
Division of Forest Products & Utilization, India.

Dr. Ishtiyak Ahmad Peerzada
Division of Forest Products & Utilization, India.

Dr. Tahir Mushtaq
Division of Forest Products & Utilization, India.

Dr. N. A. Pala
Division of Silviculture & Agroforestry, Faculty of Forestry, Benhama Ganderbal 191201. Sher-e-Kashmir University of Agricultural Science and Technology, Shalimar Srinagar Kashmir, India.

Dr. J. S. Butola
Department of Forestry & NR, HNBG University Srinagar, U.K., India.
Bilkees Ayoob
Division of Forest Products & Utilization, India.


Please see the link here: https://stm.bookpi.org/ACPR-V9/article/view/14360

Bimodal Microalloyed Steel Structure under Quasi-static and Dynamic Loading | Chapter 4 | Contemporary Perspective on Science, Technology and Research Vol. 1

 The ultrafine-grained (UFG) and bimodal makeups produced by an advanced thermomechanical treat, namely rolling, in microalloyed gird were subjected to microstructural and plastometric analyses under environments of quasi-changeless and dynamic loading. Established dilatometric studies, thermomechanical processes for laboratory rolling were preferred. This allowed, at a constant total strain advantage, to obtain microstructures with various compositions and morphologies of individual elements. The microstructure development was examined to decide how the thermomechanical limits and microalloying elements promote civilization and compositions of the conclusive microstructure. Applied schedules of the thermomechanical processing admit the production of Ultrafine-Grained (UFG) microstructures with extreme inhomogeneity in the final merchandise. Several characteristic samples were selected as a specifically complex and unexpected likeness of the obtained microstructures for further research. Plastometric tests were conducted, including compression and tightness tests under quasi-static stowing with digital concept correlation (DIC) reasoning. Additionally, dynamic stowing was applied utilizing a drop hammer and a Split Hopkinson Pressure Bar (SHPB) at strain rates ranging from 800 to 2000 s-1. Samples disfigured under such environments were subjected to microstructural analysis and machinelike properties measurements. It was noticed that the use of different alliances of TMP parameters can result in the establishment of specific microstructures, that, in turn, are the source of an appealing mechanical reaction under dynamic loading environments. This opens up new possible areas of request for such ordinary structural materials as microalloyed steels. The solid complexity of the phantasms, arising from the microstructure's response to active loadings, poses formidable challenges for the hypothetical development of models describing the flexible deformation of UFG and bimodal structures. The bimodal form was observed to delay the rainmaking technique of stress concentrations at the boundaries between polygonal ferrite and bainite or martensite. This delay can again substantially humble the propagation of cracks induced by vital loading, accompanying an order of magnitude decrease higher than that noticed in homogeneous structures. The bestowed findings grant permission provide insights for crafty impact-tolerant slope structures with wonderful dynamic characteristics.

Author(s) Details:

Remigiusz Bloniarz,
AGH – University of Krakow, Al. Mickiewicza 30, 30-059 Krakow, Poland.

Marcin Kwiecien,
AGH – University of Krakow, Al. Mickiewicza 30, 30-059 Krakow, Poland.

Paulina Lisiecka-Graca,
AGH – University of Krakow, Al. Mickiewicza 30, 30-059 Krakow, Poland.

Janusz Majta,
AGH – University of Krakow, Al. Mickiewicza 30, 30-059 Krakow, Poland.

Please see the link here: https://stm.bookpi.org/CPSTR-V1/article/view/12689

A Review of the Literature of African BlackwoodDalbergia melanoxylon, Guill. and Perr | Chapter 4 | Cutting-edge Research in Agricultural Sciences Vol. 10

 Tanzania's African Blackwood Conservation Project (ABCP) conducted a literature review on D. Mpingo or melanoxylon (African Blackwood) in the late 1990s (over twenty (20) years ago). Furthermore, it has been nineteen (19) years since the last population study and population density was performed, and seventeen (17) years since the last inventory study was taken. Today, studies on the species' propagation, tissue culture, population, and harvesting activities have revealed new information. Recent research on this species' propagation methods has piqued the interest of researchers, who are now hoping to figure out how to save the species from extinction. Because of its low regenerative ability in natural environments, it may be threatened or extinct. It was now appropriate to add new information to the literature of D. melanoxylon from various recent findings spanning approximately thirteen (13) years from the last review of the species' literature from 2000-2014, which is now twenty (20) years ago. This literature review was written to help researchers who are interested in advanced propagation strategies for this species, such as tissue culture and mycorrhiza association, as well as recent studies on the species. This review has also revealed the species' threats, recent population status in Tanzania, recently recommended research to be taken into account, ethnobotanical and ecological literatures as previous and early findings were unable to take botanists to the advanced propagation techniques that have recently been reported, and finally Dalbergia melanoxylon biology and silviculture.

Author (s) Details

Washa B. Washa
Biological sciences Department, University of Dar es Salaam – Mkwawa College, P.O. Box. 2513, Iringa Tanzania.

View Book :- https://stm.bookpi.org/CRAS-V10/article/view/1561

Elastic Wave Dynamics Problems | Book Publisher International

The key findings of comprehensive research on diffraction, radiation and elastic wave propagation are discussed in this book. In recent years, there has been an increase in interest in diffraction, radiation and elastic wave propagation problems associated with the interaction of bodies with each other as well as with media interfaces. Moreover, for elastic isotropic and anisotroic bodies of analytical types, there is currently a comprehensive focus on the solution of three-dimensional wave problems, with the aid of Debye potentials.

Author(s) Details

Alexander Kleshchev
Department of Physics, Saint-Petersburg State Navy Technical University, Russia.

View Book :- https://bp.bookpi.org/index.php/bpi/catalog/book/373