The Lung Function Impairment in Non-Atopic Patients With Chronic Rhinosinusitis and Its Correlation Analysis

Linghao Zhang,Lu Zhang,Chun-Hong Zhang,Xiao-Bi Fang,Zhen-Xiao Huang,Qing -Yuan Shi,Li-Ping Wu,Peng Wu,Zhen-Zhen Wang,Zhi-Su Liao 대한이비인후과학회 2016 Clinical and Experimental Otorhinolaryngology Vol.9 No.4

Objectives. Chronic rhinosinusitis (CRS) is common disease in otorhinolaryngology and will lead to lower airway abnormality. However, the only lung function in CRS patients and associated factors have not been much studied. Methods. One hundred patients with CRS with nasal polyps (CRSwNP group), 40 patients with CRS without nasal polyps (CRSsNP group), and 100 patients without CRS were enrolled. The difference in lung function was compared. Meanwhile, CRSwNP and CRSsNP group were required to undergo a bronchial provocation or dilation test. Additionally, subjective and objective outcomes were measured by the visual analogue scale (VAS), 20-item Sino-Nasal Outcome Test (SNOT-20), Lund-Mackay score, Lund-Kennedy endoscopic score. The correlation and regression methods were used to analyze the relationship between their lung function and the above parameters. Results. The forced expiratory volume in 1 second (FEV1) and forced expiratory flow between 25% and 75% of forced vital capacity (FEF25-75) of CRSwNP group were significantly lower than other groups (P<0.05). On peak expiratory flow, there was no difference between three groups. In CRSwNP group, FEV1 was negatively correlated with peripheral blood eosinophil count (PBEC) and duration of disease (r=–0.348, P=0.013 and r=–0.344, P=0.014, respectively), FEF25-75 negatively with VAS, SNOT-20 (r=–0.490, P=0.028 and r=–0.478, P=0.033, respectively) in CRSsNP group. The incidence of positive bronchial provocation and dilation test was lower in CRSwNP group (10% and 0%, respectively), with both 0% in CRSsNP group. The multiple linear regression analysis indicated that change ratio of FEV1 before and after bronchial provocation or dilation test were correlated with PBEC in CRSwNP group (β=0.403, P=0.006). Conclusion. CRS leading to impaired maximum ventilation and small airway is associated with the existence of nasal polyp. Lung function impairments can be reflected by PBEC, duration, VAS, and SNOT-20. In CRSwNP patients, PBEC is independent predictor of FEV1 change ratio.

Electrical heating behavior of flexible thermoplastic polyurethane/ Super-P nanoparticle composite films for advanced wearable heaters

Zhen Xiao,Chengjie Sheng,Yang Xia,Xiaojun Yu,Chu Liang,Hui Huang,Yongping Gan,Jun Zhang,Wenkui Zhang 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.71 No.-

A rationally designedflexible electrothermalfilm is composed of Super-P (SP, nanoparticle),thermoplastic polyurethane (TPU) and silica. The electric heating behavior of electrothermalfilmscan be facilely adjusted by SP contents and applied voltages. TPU/SP composite with 25 wt.% SP presentsrobust structural stability, fast response feature and superior electrothermal reproducibility. Theconductive network formed by SP nanoparticles not only could quickly convert the electric energy toheat, but also is stable under stepwise periodic and long-term electric heating–cooling conditions. Finally, a smart wrist band integrated electric heater and temperature indicator is verified the highpotential in multifunctional wearable device applications.

A Model of Atomization on a Flash Boiling Spray with Fuel Containing Co2

( Xiao Jin ),( Huang Zhen ),( Qiao Xin Qi ) 한국액체미립화학회 2005 한국액체미립화학회 학술강연회 논문집 Vol.2005 No.-

A model of atomization on a flash boiling spray is presented. The model includes two submodels. One is internal nozzle flow phenomenological model, which is developed to provide the jet mass discharge, initial spray angle and droplet size according to the two phase flow characteristic of fuel containing gas in the nozzle, the other is a new atomization model for a flash boiling spray with fuel containing CO2 on the foundation of spherical bubble dynamics. Good agreement was obtained between the calculation and experiment data..

Mn-Based Cathode with Synergetic Layered-Tunnel Hybrid Structures and Their Enhanced Electrochemical Performance in Sodium Ion Batteries

Wu, Zhen-Guo,Li, Jun-Tao,Zhong, Yan-Jun,Guo, Xiao-Dong,Huang, Ling,Zhong, Ben-He,Agyeman, Daniel-Adjei,Lim, Jin-Myoung,Kim, Du-ho,Cho, Maeng-hyo,Kang, Yong-Mook American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.25

<P>A synergistic approach for advanced cathode materials is proposed. Sodium manganese oxide with a layered-tunnel hybrid structure was designed, synthesized, and subsequently investigated. The layered-tunnel hybrid structure provides fast Na ion diffusivity and high structural stability thanks to the tunnel phase, enabling high rate capability and greatly improved cycling stability compared to that of the pure P2 layered phase while retaining the high specific capacity of the P2 layered phase. The hybrid Structure provided a decent discharge capacity of 133.4 mAh g(-1) even at 8 C, which exceeds the reported hest rate capability for Mn-based cathodes. It also displayed an impressive cycling stability, maintaining 83.3 mAh g(-1) after 700 cycles at 10 C. Theoretical calculation and the potentiostatic intermittent titration technique (PITT) demonstrated that this hybrid structure helps enhance Na ion diffusivity during charge and discharge, attaining, as a result, an unprecendented electrochemical performance.</P>

An Experimental Study on Spray Transient Characteristics of Fuel Containing Co2 Using a High Speed Camera

( Jin Xiao ),( Jun Jun Ma ),( Zhen Huang ),( Xinq I Qiao ) 한국액체미립화학회 2005 한국액체미립화학회 학술강연회 논문집 Vol.2005 No.-

Injection of fuel containing CO2 involves dissolving the gas into fuel prior to injection, which has potential to reduce the NOx and soot emissions in diesel engine. This paper presents an experimental study on the flash boiling and atomization process of transient spray of fuel containing CO2 spray by means of high speed imaging technology. Experiments were performed under atmospheric conditions on a diesel hole-type nozzle. The effect of injection pressure on the flash boiling and atomization process were evaluated, especially in the early stage of injection. The transient characteristics of the spray, such as spray-angle and spray tip penetration were also investigated. The images clearly display the developing process of flashing boiling spray . Experimental results show that fuel atomization will improve greatly when the concentration of dissolved CO2 in the fuel is larger enough. New insight into the flash boiling and atomization process of the fuel containing CO2 spray was obtained and possible mechanism to explain the phenomena was proposed.

Comparison of Two Different Schemes of Once-weekly Ovum Pick Up in Dairy Heifers

Yang, Xiao-Yu,Li, Hua,Huang, Wen-Ying,Huang, Shu-Zhen,Zeng, Yi-tao Asian Australasian Association of Animal Productio 2005 Animal Bioscience Vol.18 No.3

To compare two different schemes, continuous scheme (CS) and discontinuous scheme (DCS), of once-weekly ovum pick up (OPU) with ultrasound-guided follicular puncture technique, Holstein heifers were randomly divided into two groups of five. After characterization of their two normal estrous cycles, the heifers were subjected to consecutive 20 weeks of once-weekly OPU under two schemes: the CS (one week interval between continuous OPU, total 100 OPU sessions performed) and the DCS (OPU fixed to the day 3 and day 10 of each estrus). Then, the status of ovaries and artificial insemination results were observed. On oocyte yield, the total number of punctured follicles using DCS was lower than that using CS, but the mean numbers of punctured follicles and recovered oocytes per session were higher in DCS than CS group. So the total number of recovered oocytes was similar in both groups. There were also no differences in the quality of recovered oocytes, nor in the developmental ability of oocytes fertilized in vitro between groups. The heifers in the DCS group showed regular estrous cycles with stable estrous signs through the periods of before, during, and after OPU, while those in CS group showed longer estrous cycles and less estrous signs during and/or after OPU compared with before period. Furthermore, the mean number of inseminations required for obtaining pregnancy after completion of the experiments was lower in DCS than CS group. The research demonstrates that similar quantity and quality oocytes can be achieved, and the side effects on donors are lower in DCS that needs fewer OPUs than CS group, and DCS is superior to CS.

The atomization characteristics of the surrogate fuel of diesel from indirect coal liquefaction at engine conditions

( Zhong Huang ),( Tingting Zhang ),( Dehao Ju ),( Xinqi Qiao ),( Jin Xiao ),( Zhen Huang ) 한국액체미립화학회 2017 한국액체미립화학회 학술강연회 논문집 Vol.2017 No.-

The fuel spray behavior has a significant impact on the performance and emission characteristics of the compression ignition engine. It controls the fuel air mixing, which in turns is critical for the combustion process. The differences in the physical properties of convention diesel and the diesel from coal indirect liquefaction (DICL) are expected to result in differences in their spray characteristics, thus, in the performance and emission characteristics of the engine. The aim of this work is to analyze the atomization characteristics of the DICL and compare the global and local flow characteristics of the DICL with the NO.2 diesel (D2) at engine conditions. A surrogate fuel of the DICL (a mixture of 72.4% n-dodecane and 27.6% methylcyclohexane by mass) was built according to its components to simulate the atomization characteristics of the DICL in the non-reacting high temperature and high pressure environment. The implicit Large Eddy Simulation (LES) was used together with the Lagrangian particle tracking approach for the liquid phase in the present study. The simulation results show that the liquid penetration of the DICL is shorter than that of theD2, while there is no significant difference in the vapor penetration of the two fuels. In addition, the gas-phase axial velocity of the DICL along the spray center line is slightly larger than that of D2 in upstream of the spray. Moreover, the SMD of the DICL is larger than that of D2. The studies on the effects of the injection pressure on the atomization characteristics of the DICL were also carried out. The results imply that the injection pressure of the DICL is not required as large as the injection pressure for D2 to generate the same spray quality. This study is helpful to understand the differences in the atomization characteristics between DICL and D2.

Glass fiber reinforced graphite/carbon black@PES composite films for high-temperature electric heaters

Yaning Liu,Zhen Xiao,Wenkui Zhang,Hui Huang,Jun Zhang,Yongping Gan,Xinping He,Bingjia Wang,Yi Han,Yang Xia 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.107 No.-

Carbon based conductive polymer composites as electrothermal materials offers many merits in highflexibility, light weight, low cost, excellent processability, and rapid heating ability, however, the maximumworking temperature is usually lower than 200 C, hampering seriously the medium–high temperatureapplications. Herein, a series of rationally designed glass fiber reinforced graphite/carbonblack@polyethersulfone (G/CB@PES) composites are developed to significantly promote the maximumworking temperature over 300 C. To be specific, the introduced glass fibers acted as rigid skeleton greatlyenhance the mechanical strength of PES polymer matrix, thereby offering robust structural stability inhigh temperature working scenario. Meanwhile, glass fibers not only endow G/CB@PES composite withexcellent flame-retardant ability, but also provide rapid thermal conduction channels to reduce the riskof heat accumulation and overheating. More importantly, glass fiber reinforced G/CB@PES composites aselectrothermal film heaters exhibit superior electric heating performance in terms of fast temperatureresponsiveness, high electric heating efficiency, stable maximum working temperatures, and high electricpower efficiency under the relatively low applied voltages of 3–21 V. This work provides new insights onthe innovative design and facile fabrication of high working temperature electrothermal film heaters inemerging applications.

A Cooperative Guidance Approach Based on the Finite-Time Control Theory for Hypersonic Vehicles

Kai An,Zhen-yun Guo,Wei Huang,Xiao-ping Xu 한국항공우주학회 2022 International Journal of Aeronautical and Space Sc Vol.23 No.1

A distributed time cooperative guidance method based on the finite-time control theory is proposed to solve the salvo attack problem of multi-hypersonic vehicles in the three-dimensional space. Firstly, the second-order system is defined with the relative distance and the total leading angle as the state variables, and the finite-time controller is designed based on the multi-agent cooperative control theory for achieving the consistency of system. Novelty, taking the influence of parameters on the cooperative guidance results into account, an adaptive weight function is designed to replace the traditional constant coefficient to optimize guidance results. Then, the motion of vehicle in three-dimensional space is divided into two planes, the proportional navigation guidance (PNG) is applied in longitudinal and the lateral acceleration can be obtained via the finite-time controller and longitudinal acceleration. It is significant to establish the lateral leading angle finite-time convergence guidance law to compensate the lateral acceleration to accelerate the convergence speed. Furthermore, the biased term of terminal impact angle control is applied in PNG to achieve the terminal attack in arbitrary angle. Finally, the feasibility and robustness are verified by numerical simulations.

Apoptosis-inducing effect and structural basis of Polygonatum cyrtonema Lectin and chemical modification properties on its mannose-binding sites

( Bo Liu ),( Xiao Chao Xu ),( Yan Cheng ),( Jian Huang ),( Yan Hong Liu ),( Zhen Liu ),( Ming Wei Min ),( He Jiao Bian ),( Jing Chen ),( Jin Ku Bao ) 생화학분자생물학회 2008 BMB Reports Vol.41 No.5