The volume of shale (Vsh) is a critical parameter in petrophysical analysis that enables the accurate estimation other parameters like effective porosity, saturation and Net-to-Gross. This an important step characterization reservoirs as well valuation hydrocarbon potentials. GR (Gamma Ray), Neutron Density Potassium, Uranium Thorium logs were adopted to estimate analyze Vsh for sand 4 reservoi...

Abstract The research was conducted in two regencies: Sedau Village West Lombok Regency and Obel- Obel East Regency. sites are areas with potential sand wealth, many mining companies operating. company at the site is expected to implement good practices which pay attention design safety. Geotechnical recommendations on slope dimensions a safety factor value required making design. Several facto...

Realizing a lithium sulfide (Li2S) cathode with both high energy density and long lifespan requires an innovative design that maximizes electrochemical performance resists electrode deterioration. Herein, high-loading Li2S-based micrometric Li2S particles composed of two-dimensional graphene (Gr) one-dimensional carbon nanotubes (CNTs) in compact geometry is developed, the role CNTs stable cycl...

Each Gr-category (or categorical group) is Gr-equivalent to a Grcategory of type (Π, A, ξ), where Π is a group, A is a Π-module and ξ is a 3-cocycle of Π, with coefficients in A. In this paper, first we show that each Gr-functor induces one between Gr-categories of type (Π, C). Then we give results on the existence of Gr-functor and the classification of Gr-functors by cohomology groups H(Π, C)...

A new species of abertellid sand dollar, Abertella miskellyi n. sp., is described from the Miocene Camarones Formation of Patagonia, southern Argentina. The new taxon corroborates the existence of the genus in South America, given that Abertella is most common in the southeastern USA and the eastern coast of Central America. It is characterized by a unique basicoronal circle, in which the inter...

The adsorption of polymer microspheres in a stratum can directly affect its action mode and performance the actual application process. Understanding pattern their mechanism facilitate optimization enhance use efficiency. Ultraviolet spectrophotometry was employed to measure static characteristics (PMS) on surface quartz sand. PMS capacity sand increased with increasing concentration. When conc...

Tanaman nilam merupakan salah satu tanaman penghasil minyak atsiri yang cukup penting sebagai komoditi ekspor Indonesia dan menyumbang devisa sekitar 60% dari total nasional. pemasok terbesar dunia dengan kontribusi 90%. Minyak digunakan zat pengikat (fixative agent) dalam industri parfum tidak dapat diganti oleh sintetik karena sangat berperan menentukan kekuatan, sifat ketahanan aroma. Tujuan...

Abstract Reactive synthesis is an automated procedure to obtain a correct-by-construction reactive system from its temporal logic specification. GR(1) expressive assume-guarantee fragment of LTL that enables efficient and has been recently used in different contexts application domains. A common form providing system's requirements through use cases, which are existential nature. However, GR(1)...