نتایج جستجو برای: synthesis procedures

تعداد نتایج: 659064  

1991

Our solution is given below. First we need procedures analogous to the procedure used for modeling string scanning. In addition to a subject, there’s now an “object”, which is the result of string synthesis. There now also are two positions, one in the subject and one in the object. The global identifiers subject, object, s_pos, and o_pos are used for these four “state variables” in the procedu...

2008
Svetlana A. Krasnova Victor A. Utkin Anton V. Utkin

Manipulator endpoint location autonomous control procedures are suggested. A method of uplimited control hierarchy has been designed, which allows to provide a desired tracking precision under conditions of uncertainty of the control object operator and the effect of external unmeasured disturbances. Sliding mode state observers synthesis procedures have been designed, which allow, in a theoret...

2011
Samir A. Mohamed Elsayed Laurent D. Michel

The ability to specify CP programs in terms of a declarative model and a search procedure is instrumental to the industrial CP successes. Yet, writing search procedures is often difficult for novices or people accustomed to model & run approaches. The viewpoint adopted in this paper argues for the synthesis of a search from the declarative model to exploit the problem instance structures. The i...

2005
Alberto Leva

Based on some relationships between modeland relay-based PI/PID tuning, some very simple synthesis procedures are proposed that couple the advantages of model-based methods to the simplicity and clarity of relay experiments. These procedures are fast, as they employ a single relay test, and do not introduce large process upsets. They are also very light from the computational standpoint, thus w...

Journal: :Chemical communications 2012
Zulfa Yoosuf-Aly Juan A Faraldos David J Miller Rudolf K Allemann

The enzyme-guided asymmetric synthesis of (+)-verbenone from geranyl diphosphate in a simple two-step, one pot transformation highlights the potential of chemoenzymatic procedures for the generation of high-value terpenoids.

Journal: :Journal of visualized experiments : JoVE 2013
Katla Sai Krishna Sanchita Biswas Chelliah V Navin Dawit G Yamane Jeffrey T Miller Challa S S R Kumar

Procedures utilizing millifluidic devices for chemical synthesis and time-resolved mechanistic studies are described by taking three examples. In the first, synthesis of ultra-small copper nanoclusters is described. The second example provides their utility for investigating time resolved kinetics of chemical reactions by analyzing gold nanoparticle formation using in situ X-ray absorption spec...

Journal: :Molecules 2013
Subhadeep Roy Marvin Caruthers

The chemical synthesis of DNA and RNA is universally carried out using nucleoside phosphoramidites or H-phosphonates as synthons. This review focuses on the phosphorus chemistry behind these synthons and how it has been developed to generate procedures whereby yields per condensation approach 100% with very few side products. Additionally the synthesis and properties of certain DNA and RNA anal...

Journal: :Chemical communications 2011
Riccardo Mossetti Tracey Pirali Dèsirèe Saggiorato Gian Cesare Tron

Up to now, the synthesis of quinazolinones has required lengthy synthetic procedures. Here, we describe an innovative one-pot multicomponent reaction leading to highly substituted quinazolinones. We believe that this novel transformation may open the door for the generation of new and pharmacologically active quinazolinones, but, most important of all, the resurrection of the imide-Ugi scaffold...

2007
Munkhtuya Davaatsagaan

This paper describes the first Text-to-Speech (TTS) system for the Mongolian language, using the general speech synthesis architecture of Festival. The TTS is based on diphone concatenative synthesis, applying TD-PSOLA technique. The conversion process from input text into acoustic waveform is performed in a number of steps consisting of functional components. Procedures and functions for the s...

Journal: :Science 1985
M H Caruthers

Deoxyoligonucleotides can now be synthesized rapidly and in high yield because of recent advances in nucleic acid chemistry. Key innovations include solid-phase synthesis on silica-based supports and the development of stable deoxynucleoside phosphoramidites as synthons. When incorporated into manual, semiautomatic, or automatic instruments, these new procedures can be used to prepare probes, m...

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