Evaluation for construction,evaluation for improvement,evaluation for strength are the guiding principles of Yangtze University's preliminary evaluation of the professional accreditation,which seeks to promote the improvement of talent training quality.With the goal of building a first-class applied under-graduate program,this paper explores and practices from such the aspects as professional orientation,talent cultivation characteristics,the construction of talent cultivation system integration of specialization and virtu-ous and political awareness,practical teaching reform of alternation between work and study,collaborative education and integration of industry and university,teaching staff construction,and the implementation of continuous improvement etc,which have achieved certain results in the enhancement of the quality of talent cultivation and improvement of the social reputation of the speciality.The construction experience of Water Supply and Drainage Science and Engineering specialty in Yangtze University can provide reference and ref-erence for the construction and development of first-class programs in local undergraduate colleges and uni-versities.
MnCo2S4 powders with spinel structures were prepared by one-step solvothermal method,and the effects of the urea molar ratio on the crystal structure,microscopic morphology and electrochemical properties of MnCo2S4 were investigated.The results showed that urea as a complexing agent had a significant effect on the morphology of the synthesized powders and the electrochemical performance of the electrodes;when the urea molar ratio was 10,the MnCo2S4 powders displayed a nanoflower structure,and the corresponding elec-trode materials had the optimal electrochemical performance;the MnCo2S4 electrode materials had a specific capacitance of 422.6 F/g at a current density of 1 A/g;after5000 cycles of charging and discharging at a current density of 20 A/g,the specific capacitance retention was96%and the coulomb efficiency was104.3%.
With the increasing number and types of work-study positions in universities,as well as the num-ber of participating students,the traditional manual management methods have exposed problems such as low processing efficiency,high error rates,and excessive repetitive work.Based on the demand analysis of the whole process of college work-study program management,the system function module division and database structure design were carried and the computer technologies such as JSP,SSM,etc.,were comprehensively utilized.An integrated network management platform was constructed and the method of combining white-box and black-box testing was adopted to test the logic and function of the platform code,finding that the platform can realize the high-efficiency and accurate management of college work-study program and effec-tively improve the quality of the service management and the informatization construction of universities.
Aiming at the problem that the traditional product configuration method is not applicable due to fac-tors such as the entry and exit of suppliers and the change of manufacturing cost in the cloud manufacturing environment,a product configuration modeling method aiming at maximizing the quality of the whole process service is proposed,and a product configuration model adapted to the dynamically changing cloud manufac-turing environment is established.This paper regards the cloud manufacturing product configuration problem as a Markov decision-making process,clarifies the key concepts of reinforcement learning such as intelli-gences,environments,actions,rewards,transfers,etc.,oriented to the product configuration optimization problem and a deep Q-network-based algorithm is designed for solving the product configuration optimiza-tion.Simulation experiments based on wheel loader product configuration show that the global reward value of the model of the cloud manufacturing product configuration method based on deep reinforcement learning pro-posed in this paper is close to and converges to the upper limit of the theoretical reward value,which is well adapted to the dynamic changes of the cloud manufacturing environment feature.
Under the background of professional accreditation of engineering education,it is worth to improve the teaching effect of curriculum-based virtuous and political awareness of the specialized courses in local u-niversities,and to cultivate talents with moral competence and all-round development.Taking the curricu-lum-based virtuous and political awareness reform of Environmental Planning and Management course as an example,this paper formulates the teaching goals of curriculum-based virtuous and political awareness com-bined with specialty characteristics and requirements of new era,refines the virtuous and political elements of the course,and probes into the method of integrating virtuous and political elements,in order to realize the organic integration of professional knowledge teaching with virtuous and political awareness,which is of posi-tive significance to the implementation of the fundamental task of cultivating morality integrity.
The professional accreditation of engineering education is a new requirement for the universities con-struction in the new era.In order to further strengthen the connection between applied talent cultivation and engineering education,and explore the applied talent cultivation mode of speciality Inorganic Nonmetallic Ma-terials Engineering to adapt the basic national conditions,the Inorganic Nonmetallic Materials Engineering spe-ciality of Hubei Polytechnic University was taken as an example to analyze the exploration,reform and practice of the applied talent cultivation mode.This paper proposes promoting the reform of the applied talent cultiva-tion mode in terms of cultivation objectives,continuous improvement and evaluation mechanism,curriculum system and optimization of the teaching staff and suggests adopting the result feedback mechanism to realize the closed-loop reform of the talent cultivation mode in the context of OBE.This model can effectively improve students'engineering literacy and the ability to link theory to practice,and promote the reform and practice of the new idea of practice in the classroom and interleaved learning between practice and theory in the training of talents in applied colleges and universities.
Fatty acid chloropropanol ester in edible oils has been a new food contaminant of international con-cern in recent years,among which the contamination of 3-monochloropropane-1,2-diol esters(3-MCP-DE)is more serious.The pollution of 3-MCPDE in 105 commercially available edible vegetable oils col-lected from 7 cities in Hubei Province from 2017 to 2019 was studied by gas chromatography/mass spectrome-try.The results showed that the detection rate of 3-MCPDE in105 edible vegetable oils was92.4%,and the detection range of 3-MCPDE was ND～3.36 mg/kg.3-MCPDE contamination was commonly found in edible vegetable oils sold on the market in Hubei Province,and the contamination level of 3-MCPDE was highly varied in different types of edible vegetable oils,so it is necessary to increase the monitoring efforts.
This paper proposes an in-shape self-similar hexagonal honeycomb structure in order to gain an optimal buffering and energy-absorbing material.With reference to the external dimensions of a typical au-tomobile front bumper and the frontal collision conditions,the impact model is established to simulate and analyze the dynamic compression process,deformation pattern and characteristics of the frontal impact of the in-form self-similar hexagonal honeycomb structure respectively at low,medium and high speeds,and to study the influence of the fractal dimension on the energy-absorbing characteristics.The comparison of the energy-absorption indexes with those of circular and square structures under frontal impact reveals that,un-der the same conditions,the total energy absorption,energy absorption rate,and energy absorption efficiency of the in-shape self-similar hexagonal honeycomb structure are all superior to those of the circular and square structures.
Three kinds of natural soils such as Longsheng clay,Binhai soft clay and Sanmenxia clay,were se-lected to carry out the experimental research on the rheological characteristics of natural soils under the effect of different mass fractions of soil particles,temperature and salt solution concentration.Research showed that the yield stress rapidly increased with the increase of soil particle mass fraction and temperature.As the salt concentration increased,the yield stress of Longsheng clay increased,while the yield stress of coastal soft clay and Sanmenxia clay decreased.It was found that the mass fraction determined the contact and non-contact states of the soil particles,and the mechanism of controlling the effect of salt solution concentration was different,thus the contact state of the soil particles should be taken into account when investigating the effect of salt solution concentration on the rheological properties.
The Reynolds equation and the water film thickness equation in cylindrical coordinates were estab-lished based on the theory of fluid dynamic pressure lubrication.Matlab software was used to delineate 2 dif-ferent weave models,rectangular and rhombic,and numerical simulations were performed to analyze the effects of surface weave shape,area ratio,depth,and thrust tile curvature on the lubrication performance of thrust bearings.The results indicated that the curvature of the thrust pad had a significant impact on the fric-tion coefficient.The best lubrication performance can be obtained by decreasing the area ratio and film thick-ness of the surface texture of the thrust pad in the thrust bearing and increasing the curvature of the thrust pad.
Content and the species distribution of heavy metals in the sediment of Daye Lake was analyzed.Cement,fly ash and slag were used as curing agents to solidify the sediment.The effect of curing on the spe-ciation distribution and ecological risk of heavy metals in the sediment was discussed.The results showed that the available form of heavy metals in cured sediment decreased significantly(except Cr).Cd,Pb,Cu,Zn and Ni decreased by 34.36%,12.07%,9.51%,7.34%and 5.48%,respectively.After curing,the eco-logical risk of heavy metals in the sediment decreased.The ecological risk levels of Cu and Pb decreased from medium to low,and Cd decreased from high to medium.In general,the sediment can meet the require-ment of resource utilization after curing.
In order to study the features of the Rayleigh wave dispersion curves of the hidden caves of the lime-stone strata,the staggered-grid finite-difference numerical simulation method is used to calculate the mod-el of the hidden caves with two filling states,multiple sets of the waveform records are acquired and waveform record is analyzed by dispersion,and the dispersion analysis is carried out on the obtained waveform records,and the application effect of exploration is verified in conjunction with the examples of the engineering of tun-nel-bearing caves in Limestone strata.The results show that the Rayleigh wave method has higher resolution for hidden caves.In the model of the hidden empty cave in limestone strata,the Rayleigh wave dispersion curves aligned above the empty caves have obvious jumping phenomena;while in the model of the hidden filled cave in limestone strata,the Rayleigh wave dispersion curves aligned near the filled caves are more os-cillating,and the dispersion information in the corresponding depth range of the caves is missing.The re-search can provide theoretical reference for the exploration of similar geological conditions.
It is not easy to form the mixing pile in the strong permeable pebble layer and its construction is dif-ficult.During the excavation of the foundation pit,the strong permeable layer is prone to accidents such as soil flow and pipe surge,as well as causing the ground around the foundation pit to subside,which will lead to safety accidents.Combined with engineering examples,the paper expounds the runoff phenomenon and se-rious ground settlement both occurring in a foundation pit project using stirred pile water intercepting curtain for the first time.The occlusive pile water curtain is used to cut off water according to the actual situation and calculation analysis of the site.The results show that when using suspended cut-off curtains for excavating shallow pits in deep aquifers,various unfavorable factors should be taken into account to ensure that the cal-culation results are in line with the actual situation and to avoid safety accidents resulting from design de-fects.
A clinical analysis was performed on the patient with recurrent periodic fever.The patient presented with periodic fever,each accompanied by pharyngitis,enlarged and suppurated tonsils,and enlarged lymph nodes,was clinically diagnosed as periodic fever-avertebral stomatitis-pharyngitis-lymphadenitis(PFA-PA)syndrome.Genomic DNA was collected from the peripheral blood of the patient and his family mem-bers,whole exome sequencing was performed on patient′s genomic DNA,and mutations were verified using Sanger sequencing.The genetic analysis showed that the patient carried a de novo mutation(c.334G>A,p.E112Q)in the MEFV gene that led to PFAPA syndrome.This mutation has not been reported yet,and it is a new mutation site of the MEFV gene.This study expands the mutational spectrum of PFAPA syndrome and contributes to its clinical diagnosis and genetic counseling.
In order to seek the optimal dosage of alkali-activated slag-copper slag composite cementitious material and to improve the drying and shrinkage properties while ensuring the strength of alkali-activated composite mortar,alkali-inspired slag-copper slag composite cementitious sand specimens with different copper slag dosages were prepared.The influence law of copper slag dosing on the setting time,mechanical properties and drying shrinkage rate of composite cementitious materials was studied,and the activation effect of alkaline exciters on slag-copper slag composite cementitious materials was comparatively analyzed by adding different alkaline exciters.The results showed that the admixture of copper slag could effectively solve the problem of fast setting speed and large dry shrinkage deformation of alkali-activated slag cementitious materials;with the increase of copper slag admixture,the flexural and compressive strengths of alkali-acti-vated slag-copper slag composite cementitious materials firstly decreased,then increased and then de-creased.When the dosage of copper slag was 30%,water glass had the best excitation effect on slag-copper slag composite cementitious material,and the 28 d flexural and compressive strengths were as high as 8.68 MPa and 62.45 MPa respectively.
基于地方高校对人才培养模式的改革需求,利用"微助教"平台探讨了"以成果为导向,以学生为中心"的"物理化学"课程线上线下混合式教学模式的改革与实践,即从教学设计、教学方法、教学内容及教学考核与评价等方面实施改革,构建"物理化学"课程的新型教学模式.实践表明,该教学模式能够提高"物理化学"课程的教学质量,激发学生的学习兴趣,培养学生自主学习能力和创新能力,提高学生解决实际问题的综合能力,提高人才培养质量.
为了利用中药网络药理学方法探究丹参治疗心血管疾病的分子机制,从TCMSP等重要数据库中搜寻丹参的有效药用成分,检索其对应靶点,并从GeneCards等疾病数据库中检索心血管疾病靶点,两者取交集获得共同靶点,利用Cytoscape软件构建"丹参-成分-共同靶点-心血管疾病"网络图谱.通过David数据库对靶点进行GO功能和KEGG信号通路富集分析,并将丹参重要成分与靶点开展分子对接验证.文章发现丹参治疗心血管疾病通过多成分、多靶点、多途径的方式来实现.
基坑安全问题是制约城市地下空间发展的关键因素,排桩结构是一种支护等级高、止水效果好、工程造价低、施工工艺简单的基坑支护形式,能显著提高基坑工程的安全性.文章依次从支护类型的选择、设计理论和方法、理论计算、理论研究方法 4 个方面对我国的排桩支护工程的研究现状进行了阐述和分析,归纳总结了排桩支护结构的未来发展趋势,指出排桩结构的支护应用效果较为显著,但在特殊复杂工程中的适用性的研究尚不充分,双排桩、三排桩等改良的排桩结构形式的研究应进一步完善.
为了验证低、中、高浓度的山楂、桑叶、甘草提取物对家兔十二指肠平滑肌收缩的影响,采用离体药理实验方法,制备家兔的十二指肠平滑肌标本,在恒温平滑肌槽中给药,观察、记录小肠的收缩信号的改变.研究发现,山楂提取物对小肠平滑肌有明显收缩作用(和对照组相比,P<0.05),桑叶和甘草提取物对小肠平滑肌有明显舒张作用(和正常对照组相比,P<0.05).这 3 种中药提取物的作用呈现浓度依赖性,超过最小有效浓度的山楂、桑叶、甘草的中药提取物对小肠平滑肌有明显的收缩或舒张作用,其中,桑叶提取物对小肠的舒张作用最强,山楂提取物对小肠的收缩作用最强.
面向一流工程学科"金课"建设课程改革,提出了课程高阶性建设的教学改革模式.以"道路勘测设计"课程为例,围绕高阶性内涵,从课程改革目标、课程内容设计、教学方法与授课方式及教学效果评价体系建立等方面,探索全过程、精细化的理论分析方法与实施措施,并对课程重点知识点的实际建设进行了分析和说明,为"金课"课程建设改革提供了参考.
