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| 1 | Grinding performance evaluation of porous composite-bonded CBN wheels for Inconel 718显示文摘For high-efficiency grinding of difficult-to-cut materials such as titanium and nickel alloys, a high porosity is expected and also a sufficient mechanical strength to satisfy the function.However, the porosity increase is a disadvantage to the mechanical strength. As a promising pore forming agent, alumina bubbles are firstly induced into the abrasive layer to fabricate porous cubic boron nitride(CBN) wheels. When the wheel porosity reaches 45%, the bending strength is still high up to 50 MPa with modified orderly pore distribution. A porous CBN wheel was fabricated with a total porosity around 30%. The grinding performance of the porous composite-bonded CBN wheel was evaluated in terms of specific force, specific grinding energy, and grinding temperature, which were better than those of the vitrified one under the same grinding conditions. Compared to the vitrified CBN wheel, clear straight cutting grooves and less chip adhesion are observed on the ground surface and there is also no extensive loading on the wheel surface after grinding. | Chen Zhenzhen Xu Jiuhua Ding Wenfeng Ma Changyu | 2014 | Chinese Journal of Aeronautics2014，27，4： | 7 |
| 2 | Effects of advanced oxidation pretreatment on residual aluminum control in high humic acid water purification显示文摘Due to the formation of disinfection by-products and high concentrations of Al residue in drinking water purification, humic substances are a major component of organic matter in natural waters and have therefore received a great deal of attention in recent years. We investigated the effects of advanced oxidation pretreatment methods usually applied for removing dissolved organic matters on residual Al control. Results showed that the presence of humic acid increased residual Al concentration notably. With 15 mg/L of humic acid in raw water, the concentrations of soluble aluminum and total aluminum in the treated water were close to the quantity of Al addition. After increasing coagulant dosage from 12 to 120 mg/L, the total-Al in the treated water was controlled to below 0.2 mg/L. Purification systems with ozonation, chlorination, or potassium permanganate oxidation pretreatment units had little effects on residual Al control; while UV radiation decreased Al concentration notably. Combined with ozonation, the effects of UV radiation were enhanced. Optimal dosages were 0.5 mg O 3 /mg C and 3 hr for raw water with 15 mg/L of humic acid. Under UV light radiation, the combined forces or bonds that existed among humic acid molecules were destroyed; adsorption sites increased positively with radiation time, which promoted adsorption of humic acid onto polymeric aluminum and Al(OH) 3 (s). This work provides a new solution for humic acid coagulation and residual Al control for raw water with humic acid purification. | Wendong Wang Hua Li Zhenzhen Ding Xiaochang Wang | 2011 | Journal of Environmental Sciences2011，23，7： | 6 |
| 3 | PAQR10 and PAQR11 mediate Ras signaling in the Golgi apparatus显示文摘地岬在许多细胞的活动起一个枢轴的作用,并且它的 subcellular 区分提供空间、时间的选择。这里,我们报导由二高度相应的蛋白质 PAQR10 和孕激素和 AdipoQ 受体家庭的 PAQR11 在 Golgi 仪器发信号的地岬的空间规定的一个模式。PAQR10 和 PAQR11 在 Golgi 仪器是只局部性的。PAQR10/PAQR11 的 Overexpression 刺激基础、导致 EGF 的英皇家空军之阶级最低之兵 phosphorylation 并且以一种剂量依赖者方式增加英皇家空军之阶级最低之兵目标基因的表示。PAQR10/PAQR11 的 Overexpression 显著地提高 HRas, NRas 和 KRas4A 的 Golgi 本地化,然而并非 KRas4B。PAQR10 和 PAQR11 罐头也与 HRas, NRas 和 KRas4A 交往,然而并非 KRas4B。在由 PAQR10/PAQR11 的 overexpression 的 Golgi 仪器的增加的地岬蛋白质处于一个活跃状态。一致地, PAQR10 和 PAQR11 还原剂击倒在 Golgi 仪器的刺激 EGF 的英皇家空军之阶级最低之兵 phosphorylation 和地岬激活。有趣地, PAQR10 和 PAQR11 能与 RasGRP1,地岬的 guanine 核苷酸交换蛋白质,和 RasGRP1 的增加 Golgi 本地化交往。RasGRP1 的 C1 领域为和 PAQR10/PAQR11 的 RasGRP1 的相互作用必要、足够。由 overexpressed PAQR10/PAQR11 的英皇家空军之阶级最低之兵 phosphorylation 的模拟被 RasGRP1 的 downregulation 废除。而且, PC12 房间的区别被 PAQR10/PAQR11 的 overexpression 显著地提高。一起,这研究揭开由 PAQR10 和 PAQR11 在 Golgi 仪器发信号的地岬的空间规定的一个新范例。 | Ting Jin Qiurong Ding Heng Huang Daqian Xu Yuhui Jiang Ben Zhou Zhenghu Li Xiaomeng Jiang Jing He Weizhong Liu Yixuan Zhang Yi Pan Zhenzhen Wang Walter G Thomas Yan Chen | 2012 | Cell Research2012，22，4： | 6 |
| 4 | Endocytosis of adiponectin receptor I through a clathrin- and Rab5-dependent pathway显示文摘在真核细胞的房间,受体 endocytosis 是调整发信号的 transduction 的一个关键事件。Adiponectin 受体属于从 G-protein-coupled 受体是不同的并且在糖尿病和新陈代谢的症候群的致病有关键角色的一个新受体家庭。这里,我们分析了 adiponectin 和 adiponectin 受体的 endocytosis 1 (AdipoR1 ) 并且发现他们两个都被使内在化进跟随类似的交通线路的 transferrin 积极的分隔空间。由表示 Eps15 异种或弄空的 K+ 堵住调停 clathrin 的 endocytosis 在血浆膜套住 AdipoR1,并且 K+ 弄空废除了 adiponectin 成为主观,显示 AdipoR1 和 adiponectin 的 endocytosis 是 clathrin 依赖的。K+ 的弄空和异种提高的 Eps15 的 overexpression 刺激 adiponectin 的激活安培的蛋白质 kinase phosphorylation,建议 AdipoR1 力量 downregulate adiponectin 发信号的 endocytosis。另外,有小 GTPase Rab5 的 AdipoR1 colocalizes,和主导的否定 Rab5 废除 AdipoR1 endocytosis。这些数据显示 AdipoR1 通过一条 clathrin 依赖、 Rab5 依赖的小径被使内在化并且 endocytosis 可以在 adiponectin 发信号的规定起一个作用。 | Qiurong Ding Zhenzhen Wang Yan Chen | 2009 | Cell Research2009，19，3： | 4 |
| 5 | Effects of humic acid on residual AI control in drinking water treatment plants with orthophosphate addition显示文摘 | Wendong WANG Hua LI Zhenzhen DING Xiaochang WANG Rui LIU | 2012 | Frontiers of Environmental Science & Engineering2012，6，4： | 3 |
| 6 | The Main Progress of Perovskite Solar Cells in 2020-2021显示文摘Perovskite solar cells(PSCs)emerging as a promising photovoltaic technology with high efficiency and low manufacturing cost have attracted the attention from all over the world.Both the efficiency and stability of PSCs have increased steadily in recent years,and the research on reducing lead leakage and developing eco-friendly lead-free perovskites pushes forward the commercialization of PSCs step by step.This review summarizes the main progress of PSCs in 2020 and 2021 from the aspects of efficiency,stability,perovskite-based tandem devices,and lead-free PSCs.Moreover,a brief discussion on the development of PSC modules and its challenges toward practical application is provided. | Tianhao Wu Zhenzhen Qin Yanbo Wang Yongzhen Wu Wei Chen Shufang Zhang Molang Cai Songyuan Dai Jing Zhang Jian Liu Zhongmin Zhou Xiao Liu Hiroshi Segawa Hairen Tan Qunwei Tang Junfeng Fang Yaowen Li Liming Ding Zhijun Ning Yabing Qi Yiqiang Zhang Liyuan Han | 2021 | Nano-Micro Letters2021，13，10： | 2 |
| 7 | Investigation on induction brazing of profiled cBN wheel for grinding of Ti-6Al-4V显示文摘Profiled monolayer cBN wheel was induction brazed for grinding of titanium dovetail slot in this study.Aimed at acquiring a uniform temperature distribution along the profiled surface and reducing the thermal deformation of the brazed wheel,a finite element model was established to investigate the temperature uniformity during induction brazing.A suitable induction coil and the related working parameters were designed and chosen based on the simulation results.Ag-Cu-Ti alloy and cBN grains were applied in the induction brazing experiment.The results showed geometric deformation of the brazed wheel was no more than 0.01 mm and chemical reaction layer were found on the brazed joint interface.Further validation tests were carried out by grinding of Ti-6 Al-4 V alloy.Compared to the electroplated wheel,the brazed wheel showed better performance such as low specific grinding energy and good ground quality in grinding of Ti-6 Al-4 V alloy.Abrasion wear was found to be the main failure mode for the induction brazed wheel,while adhesion and grains pull-out were the main failure mode for the electroplated wheel. | Qilin LI Kai DING Weining LEI Jiajia CHEN Qingshan HE Zhenzhen CHEN | 2021 | Chinese Journal of Aeronautics2021，34，4： | 2 |
| 8 | Cation-vacancy induced Li+ intercalation pseudocapacitance at atomically thin heterointerface for high capacity and high power lithium-ion batteries显示文摘It is challenging to create cation vacancies in electrode materials for enhancing the performance of rechargeable lithium ion batteries (LIBs). Herein, we utilized a strong alkaline etching method to successfully create Co vacancies at the interface of atomically thin Co_(3−x)O_(4)/graphene@CNT heterostructure for high-energy/power lithium storage. The creation of Co-vacancies in the sample was confirmed by high-resolution scanning transmission electron microscope (HRSTEM), X-ray photoelectron spectroscopy (XPS) and electron energy loss near-edge structures (ELNES). The obtained Co_(3−x)O_(4)/graphene@CNT delivers an ultra-high capacity of 1688.2 mAh g^(−1) at 0.2 C, excellent rate capability of 83.7% capacity retention at 1 C, and an ultralong life up to 1500 cycles with a reversible capacity of 1066.3 mAh g^(−1). Reaction kinetic study suggests a significant contribution from pseudocapacitive storage induced by the Co-vacancies at the Co_(3−x)O_(4)/graphene@CNT interface. Density functional theory confirms that the Co-vacancies could dramatically enhance the Li adsorption and provide an additional pathway with a lower energy barrier for Li diffusion, which results in an intercalation pseudocapacitive behavior and high-capacity/rate energy storage. | Ding Yuan David Adekoya Yuhai Dou Yuhui Tian Hao Chen Zhenzhen Wu Jiadong Qin Linping Yu Jian Zhang Xianhu Liu Shi Xue Dou Shanqing Zhang | 2021 | Journal of Energy Chemistry2021，30，11： | 2 |
| 9 | Is proton a charge carrier for δ-MnO_(2) cathode in aqueous rechargeable magnesium-ion batteries?显示文摘Manganese dioxide(MnO_(2)) is considered as a potential cathode material for aqueous magnesium-ion batteries. However, the charge/discharge mechanism of MnO_(2)in aqueous electrolyte is still unclear. In present study, highly porous δ-MnO_(2) is investigated, which delivers a high capacity of 252.1 m Ah g^(-1) at 0.05 A g^(-1) and excellent rate capability, i.e., 109.7 m Ah g^(-1) at 1 A g^(-1), but a low-capacity retention of 54.4% after 800 cycles at 1 A g^(-1). The two-step discharging process, namely a consequent H^(+) and Mg^(2+) insertion reaction, is verified, by comparing the electrochemical performance of δ-MnO_(2) in 1 M MgCl_(2) and 1 M MnCl_(2) aqueous electrolyte and analyzing detailedly the Mg content and the bonding state of Mn at different charge/discharge state. Furthermore, partial irreversibility of Mg^(-1) ion insertion/extraction is observed, which may be one of the major reasons leading to capacity decay. | Zhenzhen Liu Xiang Li Jian He Qian Wang Ding Zhu Yigang Yan Yungui Chen | 2022 | Journal of Energy Chemistry2022，31，5： | 1 |
| 10 | Grindability and Surface Integrity of Cast Nickel-based Superalloy in Creep Feed Grinding with Brazed CBN Abrasive Wheels显示文摘 | Ding Wenfeng Xu Jiuhua Chen Zhenzhen | | 0，，23： | 1 |
| 11 | An Improved Dynamic Modelling for Exploring Ball Bearing Vibrations from Time-Varying Oil Film显示文摘Bearings are key components in rotating machinery,which is widely used in many fields,such as CNC machines,wind turbines and induction machines.The increasingly harsh operation environment can lead to wear and tear on raceways and reduce the precision and reliability of bearing or even machinery.Lubrication could relieve the wear to some degree,which is benefit to prolong the bearing’s life.Thus,investigation on the vibration responses under the influence of oil film is of great significance.However,for mechanism analysis,how to include the oil film into the bearing dynamic model affects the result and efficiency of solution.To address this problem,this study proposed a fast algorithm through load distribution and interpolation when calculating oil film stiffness and thickness during the solution of bearing vibration model.Analysis of oil film on vibration is carried out and a bearing test rig is designed to verify the proposed model.Numerical simulation result shows that rotational speed and load have vital effect on oil film and vibration.The experimental result is consistent with the simulation,which shows that the proposed model has a better performance on modeling bearing vibration and the method of considering oil film is reasonable. | Minmin Xu Zhenzhen Song Xiaoxi Ding Guoxing Li Yimin Shao James Xi Gu | 2022 | Journal of Dynamics, Monitoring and Diagnostics2022，1，2： | 1 |
| 12 | Porous composite-bonded CBN grinding wheel with alumina bubbles显示文摘 | CHEN Zhenzhen DING Wenfeng XU Jiuhua | 2012 | Advanced Material Research2012，565，： | 1 |
| 13 | Fabrication and performance of porous metal-bonded CBN grinding wheels using alumina bubble particles as pore-forming agents显示文摘 | DING Wenfeng XU Jiuhua CHEN Zhenzhen | 2013 | International Journal of Advanced Manufacturing Technology2013，67，： | 1 |
| 14 | Stressors and Coping Strategies of Medical Staff in the COVID-19 Pandemic in Wuhan显示文摘Exploring whether medical staff perceive stress on the assigned medical tasks,what are the specific sources of stress,what are the tangible sources of support they expected to be helpful,and individual coping with stress to provide more accurate,personal support for psychological crisis.This study uses a cross-sectional descriptive survey adopting convenience sampling among the medical staff who worked for over seven days in the infected areas of one Grade 2A and three Grade 3A hospitals during the COVID-19 pandemic.The assessment includes attitude when receiving tasks,major stressors,factors relieving stress,and personal management of stress.A total of 104(76.8%)valid questionnaires are received.A majority(94.3%)of the medical staff held a positive attitude taking duty for granted but feeling nervous and afraid(81.1%).Contacting the infected(90.6%)and compensation(92.5%)are the main concerns.The major pressure sources are regarding safety for oneself(98.1%),colleagues(92.5%),and family(94.3%),as well as lack of effective treatment(92.5%),inadequate protective equipment(94.3%)and incomplete disinfection(94.3%).The main positive pressure adjustments include strict infection controlling measures(98.4%),maintaining a positive attitude(95.2%),actively attain more information 95.2%,and engage in recreational activities(93.6%),but more than 40%takes negative adjustments to vent their emotions and relieve anxiety,suggesting the importance of early psychological intervention.During the COVID-19 pandemic,the main stressors among medical staff are safety,uncertainty and shortage of resources.Positive coping includes taking effective protective measures and achieving thorough understanding of the virus. | Long Liu Yanlin Shi Xiyan Fei Zhenzhen Wang Zhi Wang Li Li Lin Ding Qiaoyuan Yan | 2021 | International Journal of Mental Health Promotion2021，23，3： | 1 |
| 15 | Grindingcharacteristics of porous composite-bonded CBNWheels 显示文摘 | CHEN Zhenzhen XU Jiuhua DING Wenfeng | 2013 | Advanced Material Research2013，797，： | 1 |
| 16 | Bio-inspired Cell Membrane Ingredient Cholesterol-conjugated Chitosan as a Potential Material for Bone Tissue Repair显示文摘 | LI Zhenzhen WEN Jianhua JIA Weijian DING Shan XIA Xiaohui ZHOU Changren HUANG Yadong | 2016 | Chemical Research in Chinese Universities2016，32，3： | 1 |
| 17 | Assessment of intestinal absorption of total flavones of Hippophae rhamnoides L. in rat using in situ absorption models显示文摘 | Yan Xie Xiaoli Zeng Guowen Li Zhenzhen Cai Ning Ding Guang Ji | 2010 | Drug Development and Industrial Pharmacy2010，，7： | 1 |
| 18 | Grind ability and surface integrity of cast nickel-based superalloy in creep feed grinding with brazed CBN abrasive wheels显示文摘 | DING Wenfeng XU Jiuhua CHEN Zhenzhen | | 0，，： | 1 |
| 19 | Development and e- valuation of a frequency related source intensity prediction model of the traffic acoustic noise 显示文摘 | DING Zhenzhen ZHAO Jianqiang CHEN Ying | 2013 | Advanced Materials Research2013，807，： | 1 |
| 20 | Research and design of CRT-based homomorphic ciphertext database system显示文摘The cloud’s storage and query of private information have the cryptographic scholar due to the proliferation of cloud computing.In the traditional query mode,the private information stored in the cloud is at risk of being leaked.In order to solve this problem,a cloud ciphertext database system based on homomorphic encryption is a valid workaround.This paper presents a new cloud ciphertext database system model,which is based on the existing ciphertext database mode research and homomorphic properties.This paper also implements a ciphertext database system based on a CRT-based additive homomorphic scheme according to the model.Through theoretical analysis,the model is CPA-level safe and correct.The experimental results show that users can correctly query and download the data in the ciphertext database on the untrusted cloud server through the model,and it has efficiency advantages. | De Zhao Zhenzhen Li Haiyang Ding Zhenzhen Zhang Zichen Li | 2022 | High-Confidence Computing2022，2，4： | 0 |
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