A Study of Sustainable Development on Rural Ondol Residence in the Northeast of China

Shi Jun Sun,Yong Yang,Yun Duo Zhao 국제온돌학회 2006 International Journal of Ondol Vol.1 No.1

As we all know Ondol has been the most efficient and comfortable heating system of the rural residence in the Northeast of China for hundreds of years. But recently, through field survey, it was found that some country people replace the Ondol with homemade heating blindly. The result of this replacement is that heating effect of residence in winter is worse. And at the same time, it aggravates air pollution and increases heating payout. According to our real situation of energy sources reserve, environmental pollution and economic income of rural people, it is not only inpractical but also unreasonable, that in the northeast of China Ondol is replaced by homemade heating completely in winter. Ondol has its unique heating and hygienic efficacy. And it stands for cultural tradition and life custom of the country's cold areas. So we should improve Ondol combining resident structure and material. And it can make the Ondol system flourish with vigor and promote sustainable development of the country's traditional Ondol residence.

Interface contact and modulated electronic properties by external vertical strains and electric fields in graphene/MoS2 heterostructure

Shi Jiakuo,Chen Li,Yang Maoyou,Mi Zhishan,Zhang Mingjian,Gao Kefu,Zhang Duo,Su Shuo,Hou Weimin 한국물리학회 2022 Current Applied Physics Vol.39 No.-

Based to the first-principles calculations, we study the electronic properties of graphene/MoS2 heterostructure by modulating the vertical strains and applying external electric field. Graphene/MoS2 heterostructure is a van der Waals heterostructure (vdWH) with the interlayer spacing is 3.2 Å for the equilibrium state, and the contact property of the interface is n-type Schottky contact. The Schottky barrier height (SBH) changes with vertical strains which induces a change of charge transfer between graphene and MoS2 layer. In addition, with strain or without strain, the applied positive electric field can effectively promote the charge transfer from graphene to MoS2, while the negative electric field has the opposite effect. These findings support for the design of field effect transistors based on graphene vdWHs.

The practical technology research and application on rural energy saving Houses in Heilongjiang Province

Sun shi jun,Zhao Yun duo,Wang Li 국제온돌학회 2010 International Journal of Ondol Vol.2010 No.-

In order to achieve the goal of new rural construction in Heilongjiang province, national building energy-saving and emission reduction requirements, Harbin Institute of technology and Heilongjiang provincial research organizations cooperated for many years and finished this technological research project. the achievements include rural average heating energy consumption survey, rural energy-saving residential design suitable for different levels of consumption , detail structures, first applying of energy rural residential ventilation ,the research and development of new industrialized energy efficiency residence, rural, as well as releasing the Heilongjiang rural energy conservation housing construction technology guide. Passed a number of practical engineering inspections, with the significant environmental, economic and social benefits, widespread praising, this issue results won the 2010 Heilongjiang province science and technology progress second prize.

Green, Energy-efficient, Health and Comfort, the New Trend of Northeast Rural Residence - Taking Hai Gou Village, Acheng District, Harbin as an example -

Sun Shi jun,Zhao Yun Duo 국제온돌학회 2012 International Journal of Ondol Vol.2012 No.-

With the rapid development of the rural economy and vigorous promotion of energy-saving technologies, it is found through a field investigation that the new rural housing in the northeast of China shows new changes on green, energy-efficiency, health, comfort and beauty. The new rural housing mainly applied the technologies of composite energy-saving wall, double or three layers of glass energy saving windows and the roof benzene board insulation,heated in winter by Kang with the fuel of straw, corn stalks and other bio energy, which brings prominent energy-saving effect and the improved indoor environment significantly. The only or main function of the Kang is no longer the heating facilities in winter, but to play its unique benefits of comfort and health for sleep as a bed. the highlights of cultural traditions and customs in Cold rural area, the changes of the Kang are smaller and more exquisite. In the future, northeast rural housing should integrate the technolgies of residential structures, materials and kang further to promote rural sustainable development of society, economy.

The Applications and Energy Saving Analysis of Straw Board Buildings in Cold Rural Regions of China - Case of Buildings in Harbin Suburb -

Sun Shi jun,Zhao Yun duo,Luan Ying Tao 국제온돌학회 2013 International Journal of Ondol Vol.2013 No.-

Straw board is renewable natural building material with the advantages of green environmental protection, strong applicability. But it hadn’t been promoted because of many reasons such as technology and economy. Through the analysis of the unique advantages and the recent new cases of straw board buildings in Harbin, and the current obstacles to application, The effective ways and the feasible solutions to promote sustainable straw board buildings are summarized.

Clinical Significance of Expression and Amplification of the DcR3 Gene in Pancreatic Carcinomas

Zhou, Jian,Song, Shi-Duo,Li, De-Chun,Zhou, Jin,Zhu, Dong-Ming,Zheng, Shi-Ying Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.2

This study aimed to investigate the clinical significance of expression and amplification of decoy receptor 3 (DcR3) in pancreatic carcinomas (PC). mRNA expression was detected by PQ-PCR, and amplification was determined. DcR3 protein expression was detected by immunohistochemistry and ELISA. Correlations between DcR3 expression and clinical pathological factors were analyzed. The relative amount of DcR3 in PC tissues and non-cancerous tissues showed a statistically significant difference, 21 cases displaying more than two fold DcR3 amplification, while no such amplification was found in normal pancreatic tissues. DcR3 positive cell staining was located in the cytoplasm. The positive rate of DcR3 in PC and non-cancerous tissues showed a significant difference. DcR3 mRNA expression was correlated with clinical staging, size of the tumor, lymph node metastasis and histological staging, while protein expression was correlated with clinical data like tumor size. DcR3 gene amplification only correlated with tumor size. The level of DcR3 in serum of the PC resectable group before operation was $72.2{\pm}10.2$ pg/ml, showing a significant difference compared to gallbladder carcinoma group (GC) or pancreatic benign tumor (PBT) group (P < 0.01). In conclusion, DcR3 amplification is correlated with DcR3 expression in PC tissues, especially those clinical pathological factors which reflect tumor progression. Assessment of DcR3 level in sera of PC patients may be helpful for the early diagnosis and prognostic judgement.

Cloning, Expression, and Characterization of Thermostable Manganese Superoxide Dismutase from Thermoascus aurantiacus var. levisporus

Ning-Ning Song,Yan Zheng,Shi-Jin E,Duo-Chuan Li 한국미생물학회 2009 The journal of microbiology Vol.47 No.1

A superoxide dismutase (SOD) gene of Thermoascus aurantiacus var. levisporus, a thermophilic fungus, was cloned, sequenced, and expressed in Pichia pastoris and its gene product was characterized. The coding sequence predicted a 231 residues protein with a unique 35 amino acids extension at the N-terminus indicating a mitochondrial-targeting sequence. The content of Mn was 2.46 µg/mg of protein and Fe was not detected in the purified enzyme. The enzyme was found to be inhibited by NaN3, but not by KCN or H2O2. These results suggested that the SOD in Thermoascus aurantiacus var. levisporus was the manganese superoxide dismutase type. In comparison with other MnSODs, all manganese-binding sites were also conserved in the sequence (H88, H136, D222, H226). The molecular mass of a single band of the enzyme was estimated to be 21.7 kDa. The protein was expressed in tetramer form with molecular weight of 68.0 kDa. The activity of purified protein was 2,324 U/mg. The optimum temperature of the enzyme was 55°C and it exhibited maximal activity at pH 7.5. The enzyme was thermostable at 50 and 60°C and the half-life at 80°C was approximately 40 min.