Waste pollution is a global phenomenon that has recently become problem for cities, one of the wastes considerable impact on environment waste in Jakarta Bay. One locations directly felt was Kampung Kerang Ijo, Muara Angke, Pluit, North Jakarta. An interesting Ijo most people work as Shellfish Fishermen and Peelers whose meat sold market. Then arose this area, namely accumulation seashell waste...

Nature has evolved materials that possess mechanical properties surpassing many man-made composites. Bones, teeth, spider silk, or nacre, are just a few well-known examples of biomaterials that exhibit exceptionally high tensile strengths, hardness, or toughness. These remarkable properties have driven scientists to study and model their architectures and compositions, from microto nanoscales, ...

In 1993, researchers at Toyota Central R&D reported that 5 wt % of an exfoliated clay could double the roomtemperature modulus of nylon-6, a semicrystalline engineering plastic, and raise its heat distortion temperature by more than 80 °Call without sacrificing toughness. That work stimulated a worldwide effort to synthesize and study polymer–matrix nanocompositesand it also highlighted the i...

In this thesis we analyse three different reaction-diffusion models These are: the Gray-Scott model of an irreversable chemical reaction, the Gierer-Meinhardt model for seashell patters, and the Haus model of mode-locked lasers. In the limit of small diffusivity, all three models exhibit localised spatial patterns. In one dimension, the equilibrium state typically concentrates on a discrete num...

Almost twenty years ago, I heard Stephen Wolfram speak at a Gordon Conference about cellular automata (CA) and how they can be used to model seashell patterns. He had recently made a splash with a number of important papers applying CA to a variety of physical and biological systems. His early work on CA focused on a classification of the behavior of simple one-dimensional systems and he publis...

Cd<sub>3</sub>As<sub>2</sub>, especially its various nanostructures, has been considered as an excellent candidate for application in novel optoelectronic devices due to ultrahigh mobility and good air-stability. Recent researches exhibited Cd<sub>3</sub>As<sub>2</sub> a of thermoelectric materials by virtue ultralow thermal conductivity compariso...

abstract this article tries to look at the jewels of the ancient luristan (nowadays luristan province and some parts of ilam and kermanshah provinces), and to have a survey on this precious art and its typology. these jewels have been gathered by way of many scientific and unscientific excavations at last decades in the ancient sites like: kalmakareh, varkaboud, kalvali, sorkh dom, kamtarlan (k...

I ask why humans are smarter than other primates, and I hypothesize that an important part of the answer lies in what I call the Strong Story Hypothesis, which holds that story telling and understanding have a central role in human intelligence. Next, I introduce another hypothesis, the Directed Perception Hypothesis, which holds that we derive much of our commonsense, including the commonsense...

The decomposition of organic matter in coarse sandy calcareous soils (beach sand) is thought to be much higher than in acid fine sandy soils but relatively little research is performed on these soils. Laboratory incubation experiments in which the release of soil carbon (C) is determined may overestimate the release of the soil organic C, as part of the measured C may have been released from th...