A concert pianist is able to produce a wide range of imaginable nuances of musical expression by actuating the 88 keys on a piano, none of which travel through a distance greater than one centimeter. In this study, we investigated the temporal behaviour of grand piano actions from different manufacturers using different types of touch (‘legato’ versus ‘staccato’). An experimental setup consisti...

In today's technology, there are various chemical additives that shape the fresh or hardened properties of concrete. Chemical can be added alone by using several together in order to obtain desired concrete properties. Usage dosages chosen such a way they meet performance criteria and at same time do not impair qualities this study, physical, mechanical durability concretes produced different p...

BACKGROUND Although the Netherlands currently has its own procedure for evaluating chemical compounds and setting occupational exposure limits (OELs), most of these limits were originally adopted in the 1970s from threshold limit values (TLVs) set by the American Conference of Governmental Industrial Hygienists (ACGIH). However, beginning in the late 1980s, criticism about non-scientific consid...

Determining the fracture toughness of rock materials is a challenging, costly, and time-consuming task, as fabricating sharp crack in specimens will lead to failure specimen, preparing for determining requires special equipment. In this paper, relationship between mode I (KIC) with index properties, mineralogy, petrography limestone investigated using simple nonlinear simple/multiple linear reg...

Prediction of the production rate of the cutting dimensional stone process is crucial, especially when chain saw machines are used. The cutting dimensional rock process is generally a complex issue with numerous effective factors including variable and unreliable conditions of the rocks and cutting machines. The Group Method of Data Handling (GMDH) type of neural network and Radial Basis Functi...

One of a feasible and efficient method to retrofit structures is spraying shotcrete which is widely applied around the world. Shotcrete is concrete with fine aggregates which are sprayed through a hose and by air pressure coat at high velocity onto a surface. In the current research, three masonry schools from different regions of Iran are selected. The retrofitted wall surfaces have been prepa...

The tensile strength of rocks plays a noteworthy role in their failure mechanism, and its determination can be beneficial in optimizing the design of the rock structures. Schistose rocks due to their inherent anisotropy in different foliation directions show a diverse strength at each direction. The purpose of this work was to compare and assess the tensile strength of phyllite, which was obtai...

1 Research Summary Comparing the security of single-SP and double-SP round functions on the generalized Feistel. – Assumption: an infinite number of rounds – Results: double-SP causes more active S-boxes than single-SP, and thus double-SP is more secure. – Motivation: a number of rounds is small in practice. – Results: For 6 or 7 rounds, the rebound attack works more for double-SP than single-SP.

Abstract In this exploratory research, PET fibre and silica fume were practised for the intensification of commonplace concrete. was at dissimilar proportions 0%, 0.25%, 0.50%, 0.75%, 1.0%, 1.25% & 1.50%, while 2.5%, 5.0%, 7.5%, 10.0%, 12.5% 15.0%. practising research work in efficient manner purest form both kinds constituents purchased from India-Mart physical chemical composition details...