http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Kailin Li (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
An experimental study on two-phase fl ow resistances and interfacial drag in packed porous beds
Liangxing Li,Kailin Wang,Shuangbao Zhang,Xianliang Lei 한국원자력학회 2018 Nuclear Engineering and Technology Vol.50 No.6
Motivated by reducing the uncertainties in quantification of debris bed coolability, this paper reports anexperimental study on two-phase flow resistances and interfacial drag in packed porous beds. The experimentsare performed on the DEBECO-LT (DEbris BEd COolability-Low Temperature) test facilitywhich is constructed to investigate the adiabatic single and two phase flow in porous beds. The pressuredrops are measured when air-water two phase flow passes through the porous beds packed withdifferent size particles, and the effects of interfacial drag are studied especially. The results show that, fortwo phase flow through the beds packed with small size particles such as 1.5 mm and 2 mm spheres, thecontribution of interfacial drag to the pressure drops is weak and ignorable, while the significant effectsare conducted on the pressure drops of the beds with bigger size particles like 3 mm and 6 mm spheres,where the interfacial drag in beds with larger particles will result in a descent-ascent tendency in thepressure drop curves along with the fluid velocity, and the effect of interfacial drag should be consideredin the debris coolability analysis models for beds with bigger size particles.
-
Jianye Zhang,Kailin Li,Feng Kong,Chao Sun,Denglu Zhang,Xin Yu,Xuesheng Wang,Xian Li,Tongyan Liu,Guangfeng Shao,Yong Guan,Shengtian Zhao 한국조직공학과 재생의학회 2019 조직공학과 재생의학 Vol.16 No.6
BACKGROUND: Chronic kidney disease is a severe threat to human health with no ideal treatment strategy. Mature mammalian kidneys have a fixed number of nephrons, and regeneration is difficult once they are damaged. For this reason, developing an efficient approach to achieve kidney regeneration is necessary. The technology of the combination of decellularized kidney scaffolds with stem cells has emerged as a new strategy; however, in previous studies, the differentiation of stem cells in decellularized scaffolds was insufficient for functional kidney regeneration, and many problems remain. METHODS: We used 0.5% sodium dodecyl sulfate (SDS) to produce rat kidney decellularized scaffolds, and induce adipose-derived stem cells (ADSCs) into intermediate mesoderm by adding Wnt agonist CHIR99021 and FGF9 in vitro. The characteristics of decellularized scaffolds and intermediate mesoderm induced from adipose–derived stem cells were identified. The scaffolds were recellularized with ADSCs and intermediate mesoderm cells through the renal artery and ureter. After cocultured for 10 days, cells adhesion and differentiation was evaluated. RESULTS: Intermediate mesoderm cells were successfully induced from ADSCs and identified by immunofluorescence and Western blotting assays (OSR1 ? , PAX2 ?). Immunofluorescence showed that intermediate mesoderm cells differentiated into tubular-like (E-CAD ? , GATA3 ?) and podocyte-like (WT1 ?) cells with higher differentiation efficiency than ADSCs in the decellularized scaffolds. Comparatively, this phenomenon was not observed in induced intermediate mesoderm cells cultured in vitro. CONCLUSION: In this study, we demonstrated that intermediate mesoderm cells could be induced from ADSCs and that they could differentiate well after cocultured with decellularized scaffolds.
-
Design of a Light and Small Dual-band Airborne Despun Optical System
Luqing Zhang,Ning Zhang,Xiping Xu,Kailin Zhang,Yue Zhang,Jiachong Li 한국광학회 2024 Current Optics and Photonics Vol.8 No.1
In aerial cameras, image quality is easily affected by weather, temperature, and the attitude of the aircraft. Aiming at this phenomenon, based on the theory of two-step zoom optical systems, a dual-band optical-despun two-step zoom optical system is designed. The system has a small field of view of 2.00° × 1.60°, and a large field of view of 4.00° × 3.20°. In the zoom process, the wavelength range is 0.45– 0.70 μm and 0.75–1.10 μm, and the size of the optical system is 168 mm (L) × 90 mm (W) × 60 mm (H). The overall lens weight is only 170.8 g, which has advantages for miniaturization and light weight. At the Nyquist frequency of 104 lp/mm, the modulation transfer function of the visible-light optical system is more than 0.44, and that of the near-infrared optical system is more than 0.30, both of which havegood imaging quality and tolerance characteristics in the range of −45 to 60 ℃.
-
Design and analysis of sealed suspension module based on solid expandable tubular repair technology
Xiaohua Zhu,Feilong Cheng,Changshuai Shi,Jia’nan Li,Kailin Chen 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.2
The ability of sealing suspension of solid expandable tubular (SET) is one of the important factors that determine whether pipe can expand normally and serve. To solve the problem that the SET deviates from the original position (causing for the failure to repair of leakage well) due to the insufficient suspension force after expansion, this paper establishes the two-dimensional coupling model of SET-rubber ring-expansion cone-casing based on laboratory experiment parameters, designs the parameters of the sealed suspension rubber ring and conducts simulation. The results show that when the compression amount of the rubber ring is designed to be 47 %-58 % of the rubber thickness, the SET has excellent sealing ability after expansion and can meet the requirements of suspension force; too much compression will affect the service life of the rubber ring. When the length of the rubber ring is 50 mm-110 mm, the driving force and contact pressure during expansion are suitable; the rubber ring spacing is designed to be 110 mm, which avoids interference after rubber compression and saves material. In addition, the vulcanizing bonding strength of the rubber ring should be greater than 120 kN to avoid peeling off due to the failure of the rubber ring and SET bonding. The research results of this paper provide a theoretical basis for the design of sealing suspension module of SET repair technology.
-
Multi-Attribute Data Fusion for Energy Equilibrium Routing in Wireless Sensor Networks
( Kai Lin ),( Lei Wang ),( Keqiu Li ),( Lei Shu ) 한국인터넷정보학회 2010 KSII Transactions on Internet and Information Syst Vol.4 No.1
Data fusion is an attractive technology because it allows various trade-offs related to performance metrics, e.g., energy, latency, accuracy, fault-tolerance and security in wireless sensor networks (WSNs). Under a complicated environment, each sensor node must be equipped with more than one type of sensor module to monitor multi-targets, so that the complexity for the fusion process is increased due to the existence of various physical attributes. In this paper, we first investigate the process and performance of multi-attribute fusion in data gathering of WSNs, and then propose a self-adaptive threshold method to balance the different change rates of each attributive data. Furthermore, we present a method to measure the energy-conservation efficiency of multi-attribute fusion. Based on our proposed methods, we design a novel energy equilibrium routing method for WSNs, viz., multi-attribute fusion tree (MAFT). Simulation results demonstrate that MAFT achieves very good performance in terms of the network lifetime.
DBpia연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
