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Natural Science is an international journal dedicated to the latest advancements in natural sciences. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of natural sciences. All manus…
Georgi Krastev, Kiril Kolikov, Yordan Epitropov
The second law of thermodynamics, i.e. the law stating that the entropy in isolated macroscopic system can never decrease, is tightly connected to the work of the device called perpetual motion machine of second kind. Often this law is also defined as the ina…
Puthenveedu Sadasivan Pillai Harikumar, Chonattu Jaseela, Tharayil Megha
Contamination of drinking water due to fluoride is a severe health hazard problem. Excess of fluoride (>1.5 mg/l) in drinking water is harmful to human health. Various treatment technologies for removing fluoride from groundwater have been investigated. The p…
Hans G. Mayr, Jeng-Hwa Yee, Marianne Mayr, Robert Schnetzler
Nonlinearity is required to produce autonomous oscillations without external time dependent source, and an example is the pendulum clock. The escapement mechanism of the clock imparts an impulse for each swing direction, which keeps the pendulum oscillating a…
John J. Wille
A survey of zoological literature affirmed the wide occurrence of Fibonacci numbers in the organization of acellular and prokaryotic life forms as well as in some eukaryotic protistans and in the embryonic development and adult forms of many living and fossil…
Arun Kumar, Ram Prakash Singh, Narendra Pal Singh
Concept of trace elements being “the Inorganic Switches” has evolved during last several decades. Ayurveda, the traditional Indian medicinal system also emphasises the importance of minor and trace elements in human health and disease. To evaluate elemental c…
Angel Almarales, Gisel Chenard, Roberto Abdala, Donato A. Gomes, Yordanka Reyes, Neyda Om Tapanes
Hydroesterification process has been presented biodiesel production from oil the green microalga Nannochloropsis oculata raw materials. Biodiesel studied in this work is the main product got from the hydroesterification of biomass the Nannochloropsis oculata…
Jiapei Dai
To unify the four known fundamental forces and provide an explanation for the origin and the evolution of the universe are two long-term goals of theoretical physics. Here a “universe collapse model” has been proposed. The universe consists of Matter and No-m…
Yiheng Yang, Chengduan Wang, Zhenhua Dang
There were obvious differences between a medium gravel-less perforated pipe leach fields and a small system in the treatment of demestic sewage with the change of influent quality. In small system, COD removal rate was 91%, ammonia nitrogen removal rate was 9…
Zhengrong Tong
This paper is about the theory of “basic gravitinoes” (in early papers, it was referred to WG) in the material world, which make up the “dark matter” and the elementary particles as well. The strong interaction is generated by the Pressure Effect, which is re…
Kean-Khoon Chew, Sharif Hussein Sharif Zein, Abdul Latif Ahmad
As the world’s populations increase and age, there is a parallel increase in the number of medical procedures addressed to bone related injuries. It is estimated that approximately 1 million of orthopaedic implant surgeries in association with total joint rep…
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Natural Science is an international journal dedicated to the latest advancements in natural sciences. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of natural sciences. All manus… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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