Xinjiang Cancer Institute and Hospital

Urunchi, China

Xinjiang Cancer Institute and Hospital

Urunchi, China
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Wang X.,Xinjiang University | Huang Y.,Xinjiang University | Jia D.,Xinjiang University | Guo Z.,University of Wollongong | And 2 more authors.
Journal of Solid State Electrochemistry | Year: 2012

Olivine LiFePO 4/C nanocomposite cathode materials with small-sized particles and a unique electrochemical performance were successfully prepared by a simple solidstate reaction using oxalic acid and citric acid as the chelating reagent and carbon source. The structure and electrochemical properties of the samples were investigated. The results show that LiFePO 4/C nanocomposite with oxalic acid (oxalic acid: Fe 2+=0.75:1) and a small quantity of citric acid are single phase and deliver initial discharge capacity of 122.1 mAh/g at 1 C with little capacity loss up to 500 cycles at room temperature. The rate capability and cyclability are also outstanding at elevated temperature. When charged/discharged at 60 °, this materials present excellent initial discharge capacity of 148.8 mAh/g at 1 C, 128.6 mAh/g at 5 C, and 115.0 mAh/g at 10 C, respectively. The extraordinarily high performance of LiFePO 4/C cathode materials can be exploited suitably for practical lithium-ion batteries. © Springer-Verlag 2010.


Wang Z.,Key Laboratory of Clean Energy Materials and Technology of the Ministry of Education | Wang Z.,Key Laboratory of Advanced Functional Materials of the Autonomous Region | Wang Z.,Xinjiang University | Huang Y.,Key Laboratory of Clean Energy Materials and Technology of the Ministry of Education | And 10 more authors.
Solid State Ionics | Year: 2013

The effects of tetraethoxysilane (TEOS) as an electrolyte additive on the electrochemical performance of lithium ion batteries with LiMn2O 4 cathode were investigated. With 5% TEOS added, the capacity and cycling performance were improved, not only at room temperature, but also at low temperature, because of the formation of an effective solid electrolyte interphase (SEI) on the LiMn2O4 surface. The results of scanning electron microscopy (SEM) of the LiMn2O4 cathode after the initial charge/discharge cycle proved the existence of this SEI. Fourier transform infrared spectroscopy (FTIR) confirmed the compositions on the interface of the LiMn2O4 cathode. The results showed that this kind of effective organosilicon compound could provide a new promising direction for the development of organic additives to improve the electrochemical performance of lithium-ion batteries. © 2012 Elsevier B.V.


Huang Y.,Xinjiang University | Li D.,Xinjiang University | Jia D.,Xinjiang University | Guo Z.,University of Wollongong | And 2 more authors.
Journal of Nanoparticle Research | Year: 2011

Nanosized C-LiFePO4 particles are synthesized by a microwave-assisted solid-state method. A novel conductive agent, Ag/C nanocables, is adopted for the first time to modify C-LiFePO4 so as to improve the electronic conductivity. The as-synthesized samples are characterized by powder X-ray diffraction and transmission electron microscopy to determine the microstructure and morphology. Electrochemical techniques are used to investigate the electrochemistry performance of the samples. The results indicate that the rate capacity of the Ag/C nanocables-modified C-LiFePO 4 is improved due to the nanosized particle distribution and enhanced electronic conductivity. © 2011 Springer Science+Business Media B.V.


Wu H.,Xinjiang University | Huang Y.,Xinjiang University | Jia D.,Xinjiang University | Guo Z.,University of Wollongong | Miao M.,Xinjiang Cancer Institute and Hospital
Journal of Nanoparticle Research | Year: 2012

Spinel Li4Ti5O12 nanoparticles were prepared via a high-temperature solid-state reaction by adding the prepared cellulose to an aqueous dispersion of lithium salts and titanium dioxide. The precursors of Li 4Ti 5O 12 were characterized by thermogravimetry and differential scanning calorimetry. The obtained Li 4Ti 5O 12 nanoparticles were characterized using X-ray diffraction, transmission electron microscopy (TEM) and electrochemical measurements. The TEM revealed that the Li 4Ti 5O 12 prepared with cellulose is composed of nanoparticles with an average particle diameter of 20-30 nm. Galvanostatic battery testing showed that nano-sized Li 4Ti 5O 12 exhibit better electrochemical properties than submicro-sized Li 4Ti 5O 12 do especially at high current rates, which can deliver a reversible discharge capacity of 131 mAh g -1 at the rate of 10 C, whereas that of the submicro-sized sample decreases to 25 mAh g -1 at the same rate (10 C). Its reversible capacity is maintained at ~172.2 mAh g -1 with the voltage range 1.0-3.0 V (vs. Li) at the current rate of 0.5 C for over 80 cycles. © Springer Science+Business Media B.V. 2012.


Jiang W.,Xinjiang Cancer Institute and Hospital | Ou J.,Xinjiang Cancer Institute and Hospital | Zhang G.,Xinjiang Cancer Institute and Hospital | Ni D.,Xinjiang Cancer Institute and Hospital
Chinese Journal of Clinical Oncology | Year: 2011

Objective: To investigate the characteristics and differences in the clinical characteristics and prognosis of triple-negative breast cancer between the Han and Uygur ethnic groups. Methods: Clinical data of 458 operable patients of the Han and Uygur ethnic groups confirmed histo-pathologically that were treated at Xinjiang cancer hospital between January 2003 and January 2005 were analyzed. Triple-negative breast cancer patients were confirmed in the two groups and were analyzed with respect to clinical features, recurrence, and 5-year disease-free survival (DFS). Results: Out of the 458 patients, which included 97 Uygur patients and 361 Han Chinese patients, 108 patients (23.6%, 108/458) were confirmed to have triple-negative breast cancer. Moreover, the triple-negative breast cancer rate in the Uygur and Han patients was 28.9% (28/97) and 22.2% (80/361), respectively. The two groups had statistically significant differences in tumor size and clinical stage (P < 0.05), however, the recurrence rate and 5-year DFS in the two groups were not significantly different from each other. Conclusion: The Urgur patients were diagnosed with late-stage cancer compared with the Han patients. The Urgur patients had higher proportions of T 3 than the Han patients. Moreover, the Urgur patients had lesser proportions of T 1 than the Han patients, whereas the proportion of the Uygur patients in stage III was significantly higher than that of the Han patients. However, no differences were found between the two groups. Further research should be taken to investigate the effects of prognostic factors between the Han and Uygur patients with triple-negative breast cancer.


Ou J.,Xinjiang Cancer Institute and Hospital | Jiang W.,Xinjiang Cancer Institute and Hospital | Ni D.,Xinjiang Cancer Institute and Hospital | Zhang G.,Xinjiang Cancer Institute and Hospital
Chinese Journal of Clinical Oncology | Year: 2011

Objective: To analyze the clinicopathologic features and prognosis of triple-negative breast cancer (TNBC). Methods: Clinical data from 333 operable patients that were histopathologically confirmed in the Xinjiang Cancer Hospital from January 2002 to December 2003 were analyzed. The patients were divided into two groups according to the results of immunohistochemical staining. One group was the triple negative breast cancer (TNBC), which included estrogen receptor (ER) negative, progesterone receptor (PR) negative, and human epidermal growth factor receptor (HER2) negative, and the other was the non-triple-negative breast cancer group. The clinicopathologic features, local recurrence and metastasis, and 5-year disease-free rates were compared between the two groups. Results: Of the 333 patients, 82 (24.62%) were confirmed as triple-negative breast cancer. The lymph node positive rate in the triple negative breast cancer patients was 41.5%. During follow-up, 21 cases (25.61%) had local recurrence and metastasis occurred in 82 triple-negative breast cancer patients, whereas 38 cases (15.14%) had local recurrence and metastasis among the 251 non-triple-negative breast cancer patients. Compared with the non-triple-negative breast cancer group, the hazard rate of distant metastasis in triple negative breast cancer group was 2.041 (P= 0.015), the hazard rate of lung metastasis was 2.551 (P= 0.036). The hazard rate of recurrence and metastatic risk within 3 years after the operation was 1.948 (P= 0.042). Survival analysis showed that 5-year disease-free rates of triple negative breast cancer and non-triple-negative breast cancer were 74.4% and 84.9%, respectively. The comparison of two curves in the two groups: Log rank = 4.904, P = 0.027. Conclusion: The positive rate of the lymph nodes was higher in the triple-negative breast cancer. The risk of local recurrence and metastasis is higher in the triple-negative groups, which mainly manifests that the risk of distant metastasis is higher in the TNBC group. In other words, the risk of lung metastasis is higher in triple-negative breast cancer patients, and the risk of recurrence and metastasis is high within 3 years after operation. The 5-year disease-free survival (DFS) rate was lower in triple-negative breast cancer patients than in non-triple-negative breast cancer patients. TNBC has poor clinical prognosis.

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