نتایج جستجو برای: chemical tree

تعداد نتایج: 544822  

Journal: :علوم و تکنولوژی پلیمر 0
علیرضا شاکری احسان کبیری سید ضیاءالدین حسینی

this research was performed to study the effect of murray red gum tree age (4, 6, 8 years) on the chemical components, viscosity and the cellulose degree of polymerization. the eucalyptus trees were cut at the ages of 4, 6, and 8 from hand planted forests. the contents of cellulose, hemicellulose, lignin, extractives and ash for each age were then determined. the results show that with increasi...

2007
Sandra de Amo Cricia Zilda Felicio

Most work on pattern mining focus on simple data structures like itemsets or sequences of itemsets. However, a lot of recent applications dealing with complex data like chemical compounds, protein structure, XML and Web Log databases and social network, require much more sophisticated data structures (trees or graphs) for their specification. Here, interesting patterns involve not only frequent...

Journal: :Journal of bioinformatics and computational biology 2013
Yang Zhao Morihiro Hayashida Jira Jindalertudomdee Hiroshi Nagamochi Tatsuya Akutsu

Molecular enumeration plays a basic role in the design of drugs, which has been studied by mathematicians, computer scientists, and chemists for quite a long time. Although many researchers are involved in developing enumeration algorithms specific to drug design systems, molecular enumeration is still a hard problem to date due to its exponentially increasing large search space with larger num...

2012
Kavita Sachdeva Madasu Hanmandlu Amioy Kumar S. Shekhar B. Hamidzadeh A. Kohli Zenon A. Sosnowski Huan Liu Lei Yu Dinesh Acharya

Fuzzy Decision Tree is becoming increasingly significant as it is applied to areas of different platforms in real life. This paper gives an overview of the applications of fuzzy decision tree in heterogeneous fields. It is being actively used in fields as varied as intrusion detection, flexible querying (modus ponens), analysis of cognitive process (Human Computer Interaction), for user authent...

2010
Philippe Balandier Henri Frochot Agnès Sourisseau

Introduction In many circumstances in afforestation, by tree plantation or by direct tree seeding, the quick development of very competitive herbaceous and shrubby species can compromise tree establishment (Balandier et al. 2006). At present, this vegetation is often controlled by chemical and mechanical operations, whereas they are criticized from environmental points of view; some alternative...

2015
Mohamed A. Abdel-Aal

The possibility of using tree prunings residues from four wood species grown in Saudi Arabia to create cementbonded particleboards (CBPs) was studied. The properties of the produced CBPs at different board densities were evaluated. Panels were made using three different board densities (1100, 1200 and 1300 kg/m) at a constant wood/cement ratio (1/2 by weight). The mechanical properties and dime...

2017
Till Schäfer Nils Kriege Lina Humbeck Karsten Klein Oliver Koch Petra Mutzel

The era of big data is influencing the way how rational drug discovery and the development of bioactive molecules is performed and versatile tools are needed to assist in molecular design workflows. Scaffold Hunter is a flexible visual analytics framework for the analysis of chemical compound data and combines techniques from several fields such as data mining and information visualization. The...

2017
Xiufeng Yang Jinzhe Zhang Kazuki Yoshizoe Kei Terayama Koji Tsuda

Automatic design of organic materials requires black-box optimization in a vast chemical space. In conventional molecular design algorithms, a molecule is built as a combination of predetermined fragments. Recently, deep neural network models such as variational autoencoders and recurrent neural networks (RNNs) are shown to be effective in de novo design of molecules without any predetermined f...

ژورنال: علوم آب و خاک 2018

The effect of broad-leaved forest trees (Alnus glotinusa, Ulmus glabra, Popolus caspica and Parrotia persica) and their canopy position on soil C and N storage and mineraization in the plain forest areas of Noor was investigated. Soil samples were taken from two positions (near and away from the main stem) with the microplots of 30×30×15 cm. Litter (C and N), soil physical (bulk density, textur...

Journal: Pollution 2020

This study aims to examine the ability of free floating aquatic plants to remove phosphorus and to predict the reduction of phosphorus from rice mill wastewater using soft computing techniques. A mesocosm study was conducted at the mill premises under normal conditions, and reliable results were obtained. Four aquatic plants, namely water hyacinth, water lettuce, salvinia, and duckweed were use...

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