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Jin Xi,Wu Daibiao,Yang Haidong,Zhu Chengjiu,Shen Wenjing,Xu Kangkang 한국CDE학회 2023 Journal of computational design and engineering Vol.10 No.3
Complex nonlinear distributed parameter systems (DPSs) exist widely in advanced industrial thermal processes. The modeling of such highly nonlinear systems is a challenge for traditional time/space-separation-based methods since they employ linear methods for the model reduction and spatiotemporal reconstruction, which may lead to an inefficient application of the nonlinear spatial structure features represented by the spatial basis functions. To overcome this problem, a novel spatiotemporal modeling framework composed of nonlinear temporal domain transformation and nonlinear spatiotemporal domain reconstruction is proposed in this paper. Firstly, local nonlinear dimension reduction based on the locally linear embedding technique is utilized to perform nonlinear temporal domain transformation of the spatiotemporal output of nonlinear DPSs. In this step, the original spatiotemporal data can be directly transformed into low-order time coefficients. Then, the extreme learning machine (ELM) method is utilized to establish a temporal model. Finally, through the spatiotemporal domain reconstruction based on the kernel-based ELM method, the prediction of the temporal dynamics obtained from the temporal model can be reconstructed back to the spatiotemporal output. The effectiveness and performance of the proposed method are demonstrated in experiments on the thermal processes of a snap curing oven and a lithium-ion battery.
JIN XI,XIAN NING 국제온돌학회 2017 International Journal of Ondol Vol.10 No.1
The main goal of the Green Building Council is to create a prosperous and sustainable future through cost control and energy saving. Some positive measures have been adopted by the Green Building Council to take the construction industry in order to promote sustainable cost control of the construction of a number of architectural practices. In order to reduce the consumption of fossil fuels in the future, sustainable development in the system of education in the construction of large-scale implementation. Green buildings are designed to reduce operating costs to reduce energy consumption, but some of the artical on green buildings consume more energy than non green buildings. In this paper, the construction cost and the construction period of the data is from the specific area of the 30 green building and 30 non green education construction. Statistical tests are used to determine whether there is a clear difference between the construction cost and the construction period. Test results show that the cost and duration of the green building are significantly higher than those of the non green building. The findings are helpful to further research on the life cycle of the building.
( Xi Jin ),( You Ming Li ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: Nonalcoholic fatty liver disease (NAFLD) is currently the most common liver disease worldwide, with increasing prevalence in China as well. Nevertheless, the pathogenesis of NAFLD is still unclear, where the participation of insulin resistance is well acknowledge. As one type of insulin-sensitizing agent, metformin is theoretically useful in NAFLD therapy but the clinical data from china is lacking. In this study, we systematically analyzed the effect of Metformin in treating NAFLD. Methods: Randomized controlled trials conducted in China and published between January 2000 to December 2013 were screened from Chinese biomedicine web database and Chinese scientifi c journals database using proper MESH headings, followed by assessment from two independent investigators according to established inclusion criteria. The characteristics of chosen articles were displayed for further analysis while the primary and secondary end point were set as alleviation of metabolic parameters and hepatocyte lipid accumulation, respectively. The summary odds ratio was calculated to determine the overall effect of metformin in NAFLD therapy. All the data were entered and analyzed using REVIEW MANAGER 4.1, and p<0.05 was defi ned as statistically signifi cant in all analysis. Results: Eight qualifi ed trials were enrolled and the summary odds ratio for effective therapy on NAFLD was 3.34 (95% CI: 2.57, 4.56, p<0.01). The difference in the follow- up period did not infl uence the fi nal outcomes. Conclusions: Metformin therapy is effective in treating NAFLD patients in China.
Jin Zou,Xi‑Xi Long,Jia‑Le He,Shi‑Peng Yu,Sheng‑Wen Zhong 한국탄소학회 2023 Carbon Letters Vol.33 No.7
Liquid phase exfoliation of natural graphite is an industrially effective solution for graphene preparation. However, many countries have identified natural graphite as a strategic resource and restricted its mining. In this report, we used abundant and readily available needle coke (NC) as a graphene exfoliation precursor and sodium carboxymethyl cellulose (CMC) as a dispersant to prepare a sandwich structured conductive graphitized NC nanosheets (GNCNs) by liquid phase exfoliation, freeze-drying and high-temperature graphitization, in which a graphene layer is sandwiched between two thin CMC layers. CMC could increase the liquid absorption and retention ability of the conductive agent and improve the migration rate of lithium ions. The highly ordered graphene layer could accelerate the transmission of electrons. The GNCNs with 0.4 wt% CMC addition showed good rate performance (144.6 mAh g? 1 at 5 C) and high cycle stability (96.2% after 200 cycles at 1 C) for LiFePO4 (LFP) battery. The traditional Super-P (SP) conductive agent exhibited low-rate performance (113.9 mAh g? 1 at 5 C) and cycle performance (89.9% after 200 cycles at 1 C). This study offers a novel approach to selecting graphene precursors and has promising applications for conductive additives in high-performance LFP batteries.
JIN, Guang-Zhen,YIN, Xi-Jun,YU, Xian-Feng,CHO, Su-Jin,CHOI, Eu-Gene,LEE, Young-S,JEON, Jin-Tae,YEE, Sung-Tae,KONG, Il-Keun Japanese Society of Veterinary Science 2008 The Journal of veterinary medical science Vol.70 No.7
<P>Umbilical cord blood (UCB)-derived mesenchymal stem cells (MSCs) are multipotent adult stem cells, which can differentiation into cells of connective tissue and neural lineages. This study investigated the potential for neuronal differentiation of red fluorescent protein (RFP)-transgenic cat UCB-derived MSCs. The cells were cultured in pre-induction medium for 24 hr and in neuronal-induction medium for 72 hr. Immunofluorescent staining showed that 6.85% of the total cells were β III-tubulin-positive, 3.37% were neurofilament light (NF-L)-positive and 7.04% were neurofilament medium (NF-M)-positive. A β III-tubulin band was detected by western blot analysis. Our results demonstrate that RFP-transgenic UCB-derived MSCs can be differentiated into neuronal cells <I>in vitro</I>. Thus, RFP-transgenic MSCs could provide alternative tracing material for stem cell transplantation.</P>
Generation of Cloned Transgenic Cats Expressing Red Fluorescence Protein1
Yin, Xi Jun,Lee, Hyo Sang,Yu, Xian Feng,Choi, Eugene,Koo, Bon Chul,Kwon, Mo Sun,Lee, Young S.,Cho, Su Jin,Jin, Guang Zhen,Kim, Lyoung Hyo,Shin, Hyoung Doo,Kim, Teoan,Kim, Nam Hyung,Kong, Il Keun Oxford University Press 2008 BIOLOGY OF REPRODUCTION Vol.78 No.3
<P>A method for engineering and producing genetically modified cats is important for generating biomedical models of human diseases. Here we describe the use of somatic cell nuclear transfer to produce cloned transgenic cats that systemically express red fluorescent protein. Immature oocytes were collected from superovulating cat ovaries. Donor fibroblasts were obtained from an ear skin biopsy of a white male Turkish Angora cat, cultured for one to two passages, and subjected to transduction with a retrovirus vector designed to transfer and express the red fluorescent protein (RFP) gene. A total of 176 RFP cloned embryos were transferred into 11 surrogate mothers (mean = 16 +/- 7.5 per recipient). Three surrogate mothers were successfully impregnated (27.3%) and delivered two liveborn and one stillborn kitten at 65 to 66 days of gestation. Analysis of nine feline-specific microsatellite loci confirmed that the cloned cats were genetically identical to the donor cat. Presence of the RFP gene in the transgenic cat genome was confirmed by PCR and Southern blot analyses. Whole-body red fluorescence was detected 60 days after birth in the liveborn transgenic (TG) cat but not in the surrogate mother cat. Red fluorescence was detected in tissue samples, including hair, muscle, brain, heart, liver, kidney, spleen, bronchus, lung, stomach, intestine, tongue, and even excrement of the stillborn TG cat. These results suggest that this nuclear transfer procedure using genetically modified somatic cells could be useful for the efficient production of transgenic cats.</P>