Abstracts Keynote & Plenary

protein encapsulated in CNTs by molecular dynamics (MD) simulations. Here we mainly explore the
importance of the diameter selectivity a spontaneous encapsulation of a model protein in the CNT. The
investigated globular protein was observed to enter the CNT with a suitable size. If the CNT grows
larger, the protein seems not to enter the CNT actively with the limited time scale. While the CNT gets
smaller, the protein was jammed partially in the tube mouth although there is enough space in the
cavity of the CNT to fit the protein. By plotting the free energy change in this process, the energy
barrier was observed. To the spontaneous insertion process, the suitable diameter of the CNT tends to
be a key factor. The overlarge CNT makes it difficult because of the insufficient protein-CNT van der
Waals attraction, whereas too small a CNT hinders the process due to the resistance from destroying
hydrogen-bond networks of the solvent and the conformational entropy loss of the protein.
Figure 1. Free energy changes of the encapsulation process in CNTs with different sizes via Potential
of Mean Force (PMF) calculation.
PO-010
Root water
uptake model of Populus euphratica in desert riparian forest in extreme arid region
Tian Yongzheng
Research Institute, Chinese Academy of
ous Region , Bayanhot
uthor: Si Jianhua, Ph. D, mainly engaged in eco-hydrology and water resources in
000,
to transfer soil water to the atmosphere,it is an important part of
l, root density , soil
ecture for Multi-class Protein Folds Classification
gineering, Xiangtan University, Hunan, 411105, China
1,2
Si Jianhua1 *
Feng Qi 1
, Cao Shengkui 1
1. Cold and Arid Region Environmental and Engineering
Sciences. No. 320 Donggang West Road, Lanzhou 730000, P. R. China;
2. Research Institute of Forestry, Alxa League of Inner Mongolia Autonom
750306 , China
* Corresponding a
arid regions, address: Division of Hydrology and Water-land Resources, Cold and Arid Regions
Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lan Zhou 730
China. E-mail: jianhuas@lzb.ac.cn
Plant root water uptake is a key way
the research on water transforming patterns in the SPAC. So understanding the water absorption
patterns of plant root system is a base to recognize the SPAC. Recently there are many papers dealing
with the studies of the water absorption patterns of plant root system but the researched plants are
mostly focused on crops and the main researched areas are the regions with adequate precipitation.
There are only a few studies dealing with the water absorption of natural plants in extreme arid desert
regions. This paper studied the root water absorption patterns of Populus euphratica and established the
corresponding mathematical model based on the data of root density and soil water dynamics in root
zone in desert riparian forest in extreme arid region.The finite difference method was used to discrete
the soil water movement equation with evaporation boundary conditions, and the procedure of the
numerical simulation of the model was programmed. The results of numerical simulation analysis of
soil water movement in root zone of Populus euphratica showed that the simulation values were
consistent well with the measurement values with a precision ranging between 92% and 98%. This
work provides a theoretical basis for the study of water movement in the SPAC.
Keywords: desert riparian forest, Populus euphratica, root water uptake mode
moisture ,extreme arid region.
A Two-layer Learning Archit
Ruofei Wang 1
, Xieping Gao 2
1,2.College of Information En
1. Email: wrf0694@gmail.com