Journal of Jishou University(Natural Sciences Edition)

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25 November 2021, Volume 42 Issue 6

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Mathematics

Criterion on Convergence Invariance Based on λ-Multiplier

XING Zhiyong, CAI Junjuan, HUANG Li

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 1-3.

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The properties of space are studied through studying the properties of functions in functional analysis space, especially in locally convex space. In the topological vector space, the nature of X is inferred through studying the properties of X′. The invariance of λ-multiplier convergence is proved by means of logical proof and logical disproof.

Computer

Image Encryption Algorithm Based on 5D Hyperchaotic System

WU Chaoyang, ZHOU Ying

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 4-14.

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A novel image encryption method is put forward based on 5D hyperchaotic system. At first, initial values of 5D hyperchaotic system are calculated based on secret keys and chaotic sequences are generated. Then chaotic sequences are preprocessed to get new chaotic sequences. Two-dimensional permutation is executed to plain image based on column and row sorting. The cycle shift is also employed to improve the security of the scheme. Diffusing operation is performed at last and encrypted image is obtained. Experimental results and theoretical analysis prove that the method possesses a large key space and could resist kinds of attacks.

Vehicle Re-Identification Based on Multi-Scale and Wavelet Spatial Attention

LIAO Guangkai, ZHANG Zheng, NIU Yibo, SONG Zhiguo

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 15-22.

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For the problem that the multi-scale vehicle re-identification model is short of extracted detail features, a re-identification model combining multi-scale vehicle features and wavelet attention mechanism is designed. Firstly, spatial wavelet attention module is embedded into the model to obtain more details for the network. Secondly, a hierarchical fusion network is proposed, which integrates the features of different scales to improve the ability of global feature aggregation. Finally, TriHard and CrossEntropy Loss functions are used to construct the object function of vehicle identification. Experimental results of this model compared with other excellent models on VeRi and VehicleID datasets show that vehicle re-identification accuracy can be improved by embedding spatial wavelet attention into multi-scale networks.

Electrical Technology

Design of Two-Dimensional Photonic Crystal Filter with Kerr Medium

LI Zhixin, SUN Jing, WU Cong, SU Muyang

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 23-29.

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Making use of the feature that the permittivity of Kerr medium changes with the incident light, a new-type filter with Kerr medium is designed by controlling the side length of dielectric cylinder of coupled cavity to change the frequency. This filter consists of point defect, micro-cavity, download wave-guide, reflection heterojunction and main wave-guide, and the square GaAs dielectric cylinder is used in coupled cavity. The simulation calculation made through COMSOL Multiphysics shows that the filtering efficiency of this new filter can reach 99.7%.

Load Forecasting of Urban Residential District Based on LSTM-AdaBoost

LI Longxiang, PENG Chen, LI Jun, WANG Yuyan, LU Rongbo

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 30-35.

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In smart cities, accurate residential load forecasting is the key to achieving a balance between power supply and demand and reducing resource waste. In order to improve the accuracy of load forecasting of urban residential districts, a short-term load forecasting model LSTM-AdaBoost, which combines long and short-term memory network (LSTM) and ensemble learning, is proposed. The model uses dew point (the temperature at which water vapor in the air condenses into water droplets), historical load, week type and other characteristics as data input; then the LSTM network with timing memory function is used as the base learner for integrated learning; finally, the ensemble AdaBoost algorithm performs a weighted combination of the base learner to obtain a strong learner. Experimental results show that the integrated LSTM-AdaBoost model has higher forecast accuracy than single forecasting methods such as LSTM network, support vector machine (SVM) and CART decision tree.

Chemistry and chemical engineering

Synthesis, Structure, and Photoluminescence Properties of Mn(II)-Based Metal Complex

LIANG Yuxin, GAO Huizhi, WANG Xingyue, QI Zhikai

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 36-40.

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A novel Mn-based complex of Mn(choline)Cl3 (choline=C5H14NO) was synthesized by solvent evaporation. Single crystal X-ray diffraction analysis shows that the crystal structure of this complex consists of one-dimensional chains formed by the edge-shared [MnCl5O] octahedra, and these chains link each other with the adjacent ones into a three-dimensional network through intermolecular hydrogen bonds.UV-vis absorption spectrum and photoluminescence spectrum shows that this complex exhibited high efficient red-light emission induced by the d-d electron transition of (t2g)3(eg) to (t2g)4(eg)1. The photoluminescence quantum yield reaches to 37.32% and the average lifetime is 1.18 ms. In addition, it has excellent thermal stability (300 ℃). These results show that this Mn-based complex has potential applications in the field of optoelectronic devices.

Characteristic column：Study on Wuling Mountain Area

Evaluation-Based Planning Schemes of Travel Routes of Core Scenic Spots in Xiangxi Autonomous Prefecture

ZHOU Shengkang, LI Jiao, HE Ling, HE Aling, CHANG Yanzi, LI Hongyi

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 41-47.

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Twenty-six scenic spots in Xiangxi Tujia- Miao Autonomous Prefecture as the research objects, evaluation index system is established in terms of four aspects and 16 indexes, including environment, talent, facilities, and regulations. Weights of 16 indexes are provided in quantitative and qualitative ways, and the core scenic spots of different kinds are evaluated through analytic hierarchy procedure. Planning schemes of the most time-saving and money-saving travel routes of the core scenic spots are obtained, which provides reference and guidance for the local government to develop tourist industry and the tourism companies to develop tourism products.

Medical Science

Effect of LncRNA-ROR on the Hypoxia-Induced Gastric Cancer Metastasis and Invasion

ZHU Changming, SUN Gao, CHEN Gonghua, GONG Yugang, XIA Jie

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 48-53.

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Objective To investigate the effect of LncRNA ROR on metastasis and invasion in the hypoxia-induced invasion and metastasis in GC.Methods Using quantitative real-time polymerase chain reaction (RT-PCR) to detect the expression of ROR ingastric cancer tissues and cell lines.Employing the over-expression technique were used to observe the effect of overexpression of ROR on human gastric cancer cell metastasis and invasion, the transfection efficiency was verified by RT-PCR in SGC-7901 and MGC-803.Results ROR was significantly down-regulated in gastric cancer tissues samples compared with adjacent normal gastric tissues, and also down-regulated inthe hypoxic—induced GC cells. Hypoxia significantly increased the migration and invasion potential of SGC-7901 and MGC-803，After over-expression of ROR the hypoxia-induced migration and invasion of SGC7901 and MGC-803 cells were dramatically diminished. Conclusion LncRNA-ROR expression is decreased in hypoxic GC and suppressed hypoxia-induced GC metastasis and invasion, which could be a new biomarkers, a potential therapeutic target of gastric cancer.

Progress in the Diagnosis and Treatment of Primary Central Nervous System Diffuse Large B-Cell Lymphoma

ZHANG Rujiang, ZHANG Yunzhou, GAO Daiquan

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 54-61.

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In order to further improve the understanding of primary central nervous system diffuse large B-cell lymphoma (PCNS-DLBCL), PubMed, CNKI and other databases were used to search related literature on the diagnosis and treatment of primary central nervous system lymphoma, and then The pathogenesis, clinical manifestations, diagnostic methods and treatment measures of PCNS-DLBCL are reviewed. PCNS-DLBCL is a subtype of extranodal non-Hodgkin’s lymphoma that can affect any part of the central nervous system. Its pathogenesis includes the presence of Epstein-Barr virus, increased expression of PD-L1 and PD-L2, MYD88 gene mutation and CD79B Gene mutations, etc.; clinical manifestations lack specificity, high degree of malignancy, easy to relapse, and poor prognosis; diagnostic methods include imaging examination, cerebrospinal fluid examination, immunohistochemistry and histopathological examination, pathological examination is the gold standard for diagnosis; PCNS-DLBCL treatment measures include radiotherapy, chemotherapy, autologous stem cell transplantation, and combined radiotherapy and chemotherapy. At present, induction chemotherapy based on high-dose methotrexate is the best treatment plan.

Clinical Value of Combined Monitoring of Blood PCT, BNP and HBP Levels in the Prognostic Evaluation of Patients with Sepsis

SONG Lijie, WANG Ran, TAO Yanyan

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 62-66.

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Objective To explore the clinical value of combined monitoring of blood PCT, BNP and HBP levels in the prognostic evaluation of patients with sepsis. Methods 100 patients with sepsis were selected as the subjects of this study, and the treatment period was from January 2020 to December 2020. All subjects were subjected to joint monitoring of changes in blood PCT, BNP and HBP levels, and the effect of the joint detection was analyzed. In order to clarify the effect. Results After the treatment of the patients, 100 patients were divided into 60 patients in the treatment improvement group and 40 patients in the treatment failure group according to the treatment outcome. The blood PCT (4.01±1.27) Pg/mL, BNP (61.41±1.27) of the treatment group was improved. ) Pg/mL and HBP levels (29.11±1.16) Pg/mL were lower than the treatment-ineffective group (P<0.05). The positive rate, sensitivity and specificity of the combined detection of the three indicators were 98.00%, 96.00%, and 92.00%, which were significantly higher than the single monitoring and combined detection of the two indicators, and the difference was statistically significant (P<0.05). Conclusion The combined monitoring of blood PCT, BNP and HBP levels can effectively evaluate the prognosis of patients with sepsis.

Effects of Atorvastatin on the Epilepsy Model of LI-PILO Rats

FENG Junxiang, LI Jie

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 67-72.

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Objective To study the neuroprotective effect of atorvastatin (ATV) on lithium pilocarpine chloride (LI-PILO) epilepsy model in SD rats. Methods Induced status epilepticus (SE) model by intraperitoneal injection of LI-PILO, Record the behavioral changes of SD rats in the ATV group and the control group; Simultaneously use ELISA reagents and Nissl staining to detect serum inflammatory factor levels and neuronal damage in the chronic phase of the ATV group and the control group. Results In the ATV group, serum inflammatory factors decreased significantly in the chronic phase, the SE Latency and Latent period of epilepsy were significantly prolonged, the level of seizures in the acute phase decreased significantly, and the spontaneous seizures in the chronic phase reduced significantly. Nissl staining showed that more neurons survived in the hippocampus. Conclusion Atorvastatin may play a neuroprotective role by inhibiting the expression of inflammatory factors and reduce seizures in LI-PILO induced epilepsy model.

Treatment of Sudden Sensorineural Hearing Loss with Methylprednidone of Retroauricular Injection: Effect of Different Courses of Treatment

HU Yaqin, GAN Qiang, LIAO Xiufu, CHEN Hongjiang

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 73-79.

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Obejctive To analyze and compare the effect of different courses of retroauricular injection of methylprednisolone on sudden sensorineural hearing loss. Methods 134 patients with sudden sensorineural hearing loss who were hospitalized from February 2019 to December 2019 were randomly divided into 3 groups according to the order of admission. 45 patients in group A were injected with methylprednidone 40 mg retroauricular, a total of 3 times. 45 patients in group B, a total of 5 times. 44 patients in group C, a total of 7 times. After thetreatment, pure-tone audiometry was re-examined to compare the efficacy of the three groups. Results the effective rate of group A was 64.4%, the average threshold of hearing increased 20.2±17.5 dB HL, the effective rate of group B was 66.7%, the average threshold of hearing increased 20.9±16.7 dB HL, the effective rate of group C was 68.1%, the average threshold of hearing increased 19.6±17.9 dB HL, there was no statistical significance. Conclusion there is no significant difference in the efficacy of retroauricular injection of methylprednil in the treatment of sudden sensorineural hearing loss, a short course of retroauricular injection of methylprednil can achieve the purpose of treatment.

Influence of Respiratory Exercise Rehabilitation Therapy on Pulmonary Function, Exercise Enduranceand Quality of Life in Patients with Stable Chronic Obstructive Pulmonary Disease

WANG Yali, TANG Oufeng, HUANG Xiaoyan, CHENG Hao, MA Qishou, Ge Li

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 80-83.

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Objective To investigate the effects of exercise breathing exercise rehabilitation therapy on lung function, exercise endurance and quality of life in patients with stable chronic obstructive pulmonary disease. Methods 80 patients with rstable chronic obstructive pulmonary disease were selected as the research objects, and they were randomly divided into an experimental group and a control group, with 40 cases in each group. The experimental group was added to the control group, and the respiratory exercise rehabilitation therapy intervention. The difference in lung function (FEV1, FVC, FEV1∶FVC) between the two groups of patients before treatment and one month after treatment was compared. The difference in quality of life (CAT score) and exercise endurance (6MWT distance) between the two groups at discharge and at 3 months after discharge was also compared. Results After 1 month of treatment, the FEV1, FVC, FEV1∶FVC values of the experimental group were higher than those of the control group; both at the time of discharge or 3 months after discharge, the CAT values of the experimental group were lower than those of the control group, and the 6MWT values were higher than those of the control group.Conclusion Rehabilitation therapy intervention of breathing exercise exercise has a good effect on enhancing the lung function of patients with chronic obstructive pulmonary disease in stable stage, improving their exercise endurance, and improving the quality of life of patients.

Sports

Children's Sports Dance Training Market in Loudi City: Present Situation and Problems

YANG Wenshu

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 84-88.

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By using the research methods of literature study, questionnaire survey and interview, this paper analyzes the problems of children's sports dance training market in Loudi.The results show that there is a lack of standardization in the children's sports dance training market in Loudi, the supervision subject is not clear, the level of teachers in training institutions needs to be further improved, the hardware facilities are not complete, and the teaching system is not perfect.Suggestions: DanceSport Association should introduce training and assessment standards, strengthen the construction of teachers in training institutions, improve the construction of venue facilities and teaching system, and strengthen the supervision and management of children's sport dance training institutions.

Education and teaching

Necessity and Realization Path of Ideological and Political Education Integrated into College Physical Education

GUO Haiying, HUANG Yuzhe

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 89-92.

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Ideological and political education and physical education are the essential contents of college education. To integrate ideological and political education into school physical education is the necessary exploration under the new era and new situation, and the inevitable requirement of the big ideological and political pattern. At present, there are some problems in the integration of ideological and political education into college physical education, such as neglecting ideological and political education, outdated carrier, lack of path and strategy. The research suggests that we should not forget the original intention of physical education and attach importance to ideological and political education, innovate the means and carrier of ideological and political education, strengthen the training of teachers' curriculum ideological and political strategies, in the physical education teaching, extracurricular sports activities, sports competitions and other aspects of detailed curriculum ideological and political action into college physical education.

Application of Lead-in Combined with Frame Teaching in Psychiatry Teaching

JIAO Dongliang, SONG Hongtao

Journal of Jishou University(Natural Sciences Edition), 2021, 42(6): 93-96.

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With the rapid development of medical education, various scientific and effective teaching methods have been applied to clinical practice. Lead-in teaching is a direct teaching method, which is mainly based on teaching objectives and enables students to master relevant knowledge through lead-in teaching. The frame-based teaching model is based on the actual teaching needs, which decomposes complex learning tasks and guides learners to master them through reasonable teaching. It is an effective teaching strategy to combine leading-in teaching with frame-based teaching. This paper discusses the specific application value of the combined teaching model in psychiatry teaching, aiming to provide some valuable references for relevant teachers.