An integrated method of flammable cloud size prediction for offshore platforms

Zhang Bin,Zhang Jinnan,Yu Jiahang,Wang Boqiao,Li Zhuoran,Xia Yuanchen,Chen Li 대한조선학회 2021 International Journal of Naval Architecture and Oc Vol.13 No.1

Response Surface Method (RSM) has been widely used for flammable cloud size prediction as it can reduce computational intensity for further Explosion Risk Analysis (ERA) especially during the early design phase of offshore platforms. However, RSM encounters the overfitting problem under very limited simulations. In order to overcome the disadvantage of RSM, Bayesian Regularization Artificial Neural (BRANN)-based model has been recently developed and its robustness and efficiency have been widely verified. However, for ERA during the early design phase, there seems to be room to further reduce the computational intensity while ensuring the model's acceptable accuracy. This study aims to develop an integrated method, namely the combination of Center Composite Design (CCD) method with Bayesian Regularization Artificial Neural Network (BRANN), for flammable cloud size prediction. A case study with constant and transient leakages is conducted to illustrate the feasibility and advantage of this hybrid method. Additionally, the performance of CCD-BRANN is compared with that of RSM. It is concluded that the newly developed hybrid method is more robust and computational efficient for ERAs during early design phase.

고궁박물관 문화창의 제품 개발 및 마케팅에 대한 4I원칙 연구

( Zhang Zhuoran ) 인문사회과학예술융합학회 2020 인문사회과학예술융합학회지 Vol.4 No.3

Based on the characteristics of the current Internet, China's Palace Museum, applying the 4I marketing principle, pays more attention to the interest and entertainment of its museum authorized cultural products from the design and development to the later promotion and sales, and pays more attention to enhancing the participation and interaction of consumers in the marketing promotion, so as to meet the interest expectations and personalized needs of consumers. Starting from the 4I principle, this paper attempts to summarize the methods suitable for the development and marketing of cultural and creative products in museums by combing and analyzing the design, development and marketing strategies of cultural and creative products of the Forbidden City, and tries to find new experience and marketing methods for the dissemination of traditional culture and the promotion of cultural and creative products for museums and other cultural institutions, so as to promote the dissemination of Chinese traditional cultural industry It provides new ideas and new directions for development.

Experimental study on the combined effects of obstacles and local water mist on gas explosion for maritime safety

Zhang Bin,Li Zhuoran,Xia Yuanchen,Shi Jihao,Zhang Jinnan,Wang Boqiao,Yu Jiahang,Qu Yanxu,Chen Li,Lin Yejin,Wu Wanqing 대한조선학회 2022 International Journal of Naval Architecture and Oc Vol.14 No.1

A variety of experimental configurations including different water mist obstacles, are used to investigate the combined effects of obstacles and water mist upon the gas explosion. The results demonstrate the 8 mm water mist can significantly inhibit the deflagration, while both 45 mm and 80 mm water mists exhibit the opposite effect under all the locally distributed positions of water spray nozzle without obstacles inside the vessel. When considering the obstacles, the 45 mm water mist starts to mitigate the deflagration and its mitigation effect is more significant than that induced by the 8 mm water mist. What's more, the 80 mm water mist can slow down the flame propagation speed while it would still lead to the gas explosion. Additionally, there remains unchanged about the effect of locally spraying 8 mm water mist upon deflagration at the initial stage of flame development as varying the position of obstacles, while the effects of mitigating deflagration by 45 mm and 80 mm water mist are decreased. The results will make contributions to design the arrangement of equipment and water mist configuration on the offshore platform or NG-fueled ship's engine room so as to mitigate the gas explosion accident.

Influence of pore structure of granular activated carbon prepared from anthracite on the adsorption of CO2, CH4 and N2

Bo Zhang,Zhuoran Huang,Ping Liu,Jin Liu,Min Gu 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.3

A series of granular activated carbon (GAC) samples with similar surface chemical properties but different pore structures were prepared from anthracite. The maximum adsorption capacities of the prepared CO2, CH4, and N2 at 298 K and 2.0MPa were 4.27mmol/g, 2.54mmol/g, and 1.46mmol/g, respectively, and the adsorption selectivity parameters, i.e., CH4,N2 and CO2,CH4, were 3.23 and 3.06, respectively. By using the GAC with the optimum pore size as adsorbent, the concentration of methane in the nitrogen-methane (CH4/N2) mixture was concentrated from 30% to 63.5% via a single-column single-cycle pressure swing adsorption (PSA) process. The pore size distribution of the GAC samples was dominated by micropores, with specific surface area in the range of 330-500m2/g and micropore volume in the range of 0.12-0.19 cm3/g. Although the specific surface area and pore volume of micropores played an important role in the separation performance, the pore size distribution was found to be the decisive factor. In particular, the micropores with sizes in the range of 5.0-10.0 Å were the main factor affecting the concentrating effect of CH4 or CO2 by GAC.

Diets structure of a common lizard Eremias argus and their effects on grasshoppers: Implications for a potential biological agent

Xunbing Huang,Huihui Wu,Xiongbing Tu,Zhuoran Zhang,Hongtian Su,Yongming Shi,Guang-Jun Wang,Guangchun Cao,Xiangqun Nong,Zehua Zhang 한국응용곤충학회 2016 Journal of Asia-Pacific Entomology Vol.19 No.1

Outbreaks of grasshoppers (Orthoptera: Acrididae) often cause serious ecological damage. Recently, there has been interest in using natural enemies of grasshopper for their biological control. This study examined the biology and predation on grasshoppers by Eremias argus, a common lizard in Inner Mongolia. Its developmental duration and life history are consistent with adaptation to grasshopper phenology. The diet structure of E. argus included grasshoppers, beetles, ants, leafhoppers, moths, bees and spiders. A positive correlation between E. argus population numbers and grasshopper population numbers was highly significant. We built models describing the functional response and intraspecific competition for E. argus adults. The functional feeding response of E. argus on grasshopper was classed as Holling type III. The maximum number of grasshoppers consumed by female and male adults were 11.2 and 7.0 individuals per day, respectively. Predatory ability was strongest in female adults, with the second and third instars of Oedaleus asiaticus preferred. The predation ratios(E) of E. argus on grasshoppers declinedwith increasing lizard density, especially for female adult E. argus. E. argus could play an important role in grasshopper control and maintaining a population of E. argus in the grassland ecosystemcould effectively control low-density grasshopper populations on grassland. Suggestions on how E. argus could fit into an IPM programme for biological control of grasshopper are discussed.

Efficacy of acupuncture for cardiopulmonary cerebral resuscitation: A systematic review and meta-analysis

Liu Yunlan,Ren Mengjuan,Kuang Zhuoran,Luo Xufei,Li Huishan,Zhang Yikai,Wen Wanxin,Cai Yefeng,Ni Xiaojia,Chen Yaolong 한국한의학연구원 2023 Integrative Medicine Research Vol.12 No.1

Background: Cerebral resuscitation is one of the main therapeutic aims in the treatment of cardiac arrest (CA) patients who experience a return of spontaneous circulation (ROSC). However, the therapeutic effects of current treatments are not ideal. The purpose of this study was to evaluate the efficacy of neurological function of acupuncture combined with conventional cardiopulmonary cerebral resuscitationthe (CPCR) for patients after ROSC. Methods: Seven electronic databases and other related websites were searched to identify studies on acupuncture combined with conventional CPCR for patients after ROSC. R software was used to conduct a meta-analysis, and the outcomes that could not be pooled were analyzed using a descriptive analysis. Results: Seven RCTs involving 411 participants who had experienced ROSC were eligible for inclusion. The main acupoints were Neiguan (PC6), Shuigou (DU26), Baihui (DU20), Yongquan (KI1), and Sanyinjiao (SP6). Compared to conventional CPCR, acupuncture combined with conventional CPCR led to signifi- cantly higher Glasgow Coma Scale (GCS) scores on day 3 (mean difference (MD) = 0.89, 95% CI: 0.43, 1.35, I 2 = 0%), day 5 (MD = 1.21, 95% CI: 0.27, 2.15; I 2 = 0%), and day 7 (MD = 1.92, 95% CI: 1.35, 2.50; I 2 = 0%). Conclusion: Acupuncture-assisted conventional CPCR may have a potential role in improving neurologi- cal function in CA patients after ROSC, but the certainty of evidence is very low and more high-quality studies are required.

The role of acupuncture and moxibustion in the treatment, prevention, and rehabilitation of patients with COVID-19: A scoping review

Mengjuan Ren,Yunlan Liu,Xiaojia Ni,Zhuoran Kuang,Xufei Luo,Yikai Zhang,Huishan Li,Yaolong Chen 한국한의학연구원 2022 Integrative Medicine Research Vol.11 No.4

Introduction This study aims to summarize the available evidence and guideline/consensus recommendations for acupuncture and moxibustion in the treatment, prevention and rehabilitation of patients with coronavirus disease 2019 (COVID-19). Methods A scoping review was performed. Eight electronic databases and other related websites were searched. All studies related to acupuncture and moxibustion for COVID-19 were considered. Descriptive analysis was applied to analyze the all included studies and guideline recommendations. Results We ultimately included 131 eligible studies. The main topics of the included studies were the treatment (82.4%) and prevention (38.9%) of COVID-19. The most included studies were literature reviews (65, 49.6%), protocols of systematic reviews (20, 15.3%), and guidelines and consensuses (18, 13.7%). The 18 (13.7%) COVID-19 guidelines and consensuses included 47 recommendations on acupuncture and moxibustion, which focused on the treatment (21/47, 44.7%), rehabilitation (17/47, 36.2%) and prevention (6, 12.8%) of COVID-19 patients. Zusanli (ST36), Feishu (BL13), Guanyuan (RN4) were recommended mostly for the treatment, rehabilitation and prevention respectively. Conclusion Acupuncture and moxibustion are effective in the treatment of COVID-19 patients to some extent. However, more high-quality of clinical trials still needed to determine the feasibility of acupuncture and moxibustion in COVID-19 patients to better guide clinical practice. Study registration Open Science Framework Registries (Registration DOI: 10.17605/OSF.IO/Z35WN; https://osf.io/z35wn). Introduction This study aims to summarize the available evidence and guideline/consensus recommendations for acupuncture and moxibustion in the treatment, prevention and rehabilitation of patients with coronavirus disease 2019 (COVID-19). Methods A scoping review was performed. Eight electronic databases and other related websites were searched. All studies related to acupuncture and moxibustion for COVID-19 were considered. Descriptive analysis was applied to analyze the all included studies and guideline recommendations. Results We ultimately included 131 eligible studies. The main topics of the included studies were the treatment (82.4%) and prevention (38.9%) of COVID-19. The most included studies were literature reviews (65, 49.6%), protocols of systematic reviews (20, 15.3%), and guidelines and consensuses (18, 13.7%). The 18 (13.7%) COVID-19 guidelines and consensuses included 47 recommendations on acupuncture and moxibustion, which focused on the treatment (21/47, 44.7%), rehabilitation (17/47, 36.2%) and prevention (6, 12.8%) of COVID-19 patients. Zusanli (ST36), Feishu (BL13), Guanyuan (RN4) were recommended mostly for the treatment, rehabilitation and prevention respectively. Conclusion Acupuncture and moxibustion are effective in the treatment of COVID-19 patients to some extent. However, more high-quality of clinical trials still needed to determine the feasibility of acupuncture and moxibustion in COVID-19 patients to better guide clinical practice. Study registration Open Science Framework Registries (Registration DOI: 10.17605/OSF.IO/Z35WN; https://osf.io/z35wn).