多元文化背景下大学生理想信念生成、变化及行为转换的认识与把握

理想信念作为人类所特有的一种精神现象,具有自身所固有的生成、变化与转换规律。多元文化背景下,大学生理想信念的生成、变化与转换范式,不仅需要加以归因分析,更需要从认知、引导、明辨、实践的角度加以认识和把握。

大黄炒炭后新生物质的分离鉴定和生成变化规律

目的:分离和鉴定大黄炒炭后新产生的化学成分,并研究其生成变化规律。方法:大黄炭提取液先用大孔树脂富集,用制备色谱分离纯化,通过理化性质及NMR和MS光谱数据确定化合物结构;大黄粉末分别在180,200,220℃烘烤6,8,10,12,14,16,18,20,25,30,35min后,通过HPLC方法测定新生成分的含量。结果:新产生的化学成分为5-羟甲基糠醛,大黄粉末在200℃烘烤炮制12min时,5-羟甲基糠醛含量达到峰值。结论:5-羟甲基糠醛首次从大黄炭中分离得到,可能是大黄炮制的关键指标成分,可以用来控制大黄炭饮片的质量。

基于变化生成图的OWL本体协同进化方法研究

随着本体规模的不断扩大,由于能力和知识的约束,单个知识工程师已经难以单独对本体进行改进,因此如何实现本体的协同进化成为了一个亟待解决的问题。本文提出了一个能够支持OWL本体协同进化的结构化方法,引入了一种有向的与或图——变化生成图来表示知识工程师的本体改进意图,通过发现变化生成图之间的冲突来找出多个知识工程师本体改进意图之间潜在的矛盾,并通过变化生成图的冲突消解来解决本体改进意图之间的矛盾,使得多个本体改进意图能够并存,从而实现本体协同进化的目标。

长方案控制性超促排卵过程中黄体生成素水平对多囊卵巢综合征患者IVF-ET结局的影响

目的探讨控制性超促排卵(COH)过程中黄体生成素(LH)变化趋势对多囊卵巢综合征(PCOS)患者体外授精-胚胎移植(IVF-ET)结局的影响。方法回顾性分析首次接受IVF-ET治疗、使用经典长方案的PCOS患者314例,根据早、中、晚卵泡期血清LH水平分为早-中卵泡期降低组(A组,LH比值≤1)与升高组(B组,LH比值>1)、中-晚卵泡期降低组(C组,LH比值≤1)与升高组(D组,LH比值>1)、早-晚卵泡期降低组(E组,LH比值≤1)与升高组(F组,LH比值>1),比较A与B、C与D、E与F组间结局的差异。结果 A、B两组间临床结局差异无统计学意义(P>0.05)。C组获卵数、早期自然流产率较D组显著升高(P<0.05),而正常受精率、胚胎种植率、临床妊娠率、持续妊娠率较D组显著降低(P<0.05)。E组早期流产率较F组显著升高(P<0.05),持续妊娠率较F组显著下降(P<0.05),其它指标组间比较差异无统计学意义(P>0.05)。结论早-晚卵泡期与中-晚卵泡期LH呈升高趋势有更好的临床结局,早-中卵泡期LH变化趋势对临床结局无影响。

中药血府逐瘀汤辅助治疗对子宫肌瘤患者临床疗效及黄体生成素、雌二醇、卵泡雌激素水平表达的影响

目的:探讨子宫肌瘤采用中药血府逐瘀汤辅助治疗的影响。方法:抽调对象研究时间:2016年6月-2018年5月;研究对象:我院妇科诊治的100例子宫肌瘤患者,按治疗方式分为每组50例的对照组、研究组。对照组采用米非司酮进行治疗;观察组采用米非司酮联合血府逐瘀汤进行治疗。观察两组患者经3个月(一个疗程)治疗后,采取静脉血检查患者的促黄体生成素(Luteinizing Hormone,LH)、雌二醇(Estradiol,E2)、卵泡雌激素(Follicle-stimulating Hormone,FSH)水平变化;经B超检查与比较两组患者治疗前后子宫体积、子宫肌瘤体积、经期周期、经期量的变化及临床疗效。结果:研究组患者的显效率、总有效率等均优于对照组,P<0.05;研究组患者治疗后的LH、E2、FSH的水平均优于对照组,P<0.05,差异显著;研究组患者的子宫体积、子宫肌瘤体积显著缩小,月经周期、月经量显著改善,与对照组比较差异显著,P<0.05;两组患者不良反应差异无统计学意义,P>0.05。结论:中药血府逐瘀汤干预子宫肌瘤患者,其黄体生成素、雌二醇、卵泡雌激素水平表达均有所改善,子宫肌瘤体积明显缩小,临床效果显著,值得医师推广。

一种基于规则的OWL-S本体语法一致性维护方法

OWL-S本体语法一致性维护是语义Web服务维护工程中需要重点研究的问题。提出一个一致性维护框架指导知识工程师进行OWL-S本体语法一致性维护,定义并抽象出OWL-S本体基本变化,提出变化关联矩阵分析基本变化间的依赖关系,基于关联矩阵提出额外变化序列生成算法分析基本变化对全局的影响,并分析了算法时间复杂性。对OWL-S本体语法一致性规则进行了形式化定义,使机器能够自动检测这些规则,辅助知识工程师完成OWL-S本体语法一致性维护工作。

Physio-Biochemical Changes in Jujube Fruits(Zizyphus jujuba Mill. cv. Lingwuchangzao) at Mature Stage

The changes of physiological and biochemical indices in jujube fruits during the late development were investigated from 6-year-old jujube trees （Zizyphus jujuba Mill. cv. Lingwuchangzao）. The results showed that the flesh firmness decreased slowly from white-green stage to full-red stage, being significantly related with the developmental maturity of jujube fruits negatively, the correlation coefficient reached -0.980 3^＊＊. The contents of ascorbic acid and titratable acid in jujube fruits were significantly related with the developmental process of jujube fruits negatively or positively, the correlation coef- ficients were -0. 973 1^＊＊and ＋ 0. 974 6^ ＊ ＊ , respectively. The contents of soluble solids, total sugar, and sucrose increased with jujube ripening, while the relative sweetness of jujube fruits showed the same variation pattern, the correlation coefficients were 0. 996 6 ^＊ ＊ , 0. 988 0^＊＊ , and 0. 982 8 ^＊ ＊ , respectively. Before white-green stage during fruit development, the accumulation of monosaccharide was predominant in jujube fruits, following a fast accumulation of sucrose, indicating that the main component of sugars is sucrose at the crisp-ripe stage. Furthermore, the starch content of the flesh reached the peak at about thirty percentage of jujube maturity, being 51,54 mg/100 g.FW. The respiratory rates varied between 10 mg/（ kg.h） and CO2 26 mg/（ kg.h） after fruit turning red and before softening, indicating a non-climacteric respiratory type.

Dynamic Changes of Land Ecological Carrying Capacity Based on the Ecological Footprint——By the Case Study of Chengdu City

Chengdu City is in the period of rapid urbanization and industrialization, and the disturbance derived from human activities on environment is increasing remarkablely in recent 20 years. The pressure on environment, economy and population is also increasing and land use in Chengdu has changed enormously. As struc- ture and function of land ecological system change obviously, sustainable development of land productivity has been an important goal and strategic task from now on, and it is necessary to systematically research land ecological carrying capacity based on ecological footprint. The ecological footprint of Chengdu City in the past ten years was calculated and analyzed from the spatial and temporal aspects according to statistical data from 1998 to 2008, as per ecological footprint method, ecological carrying capacity and the GIS spatial analysis method, and regression analysis method. The ecological footprint and ecological carrying capacity values from 2009 to 2019 in Chengdu City were predicted through calculation results in the past ten years. The results show that the ecological footprint and ecological deficit of land use from 1998 to 2008 increased in Chengdu City. The ecological deficit of land use within the city center was in high levels in the past ten years, and the ecological footprint kept raising, especially in areas, such as Shuangliu, Chongzhou, Qingyang among 9 city areas, 4 counties and 6 districts in Chengdu City. There is fanlike distribution of ecological deficit of land use. Analysis shows that the social and natural ecological system is uneven distribution, which is not in sustainable de- velopment situation. The results of the study show that the economic, social and natural ecological system in Chengdu City is not sustainable, and the ecological foot- print is uneven distribution. The analysis of the dynamic change of land ecological carrying capacity in Chengdu City is very important for city government in the pro- cess of the vigorous development in new Tianfu Xinqu, and redevelopment in the northern part of this city.

村镇供水管网优化设计探讨

如何合理确定村镇供水管网敷设方案,关系到整个供水系统的安全性和可靠性。通过生成树变化法,将环状管网转化成树状管网,确定供水管网中最短供水路线,再计算最短供水路线下的最低综合费用、供水系统的经济管径,以确定最优管道敷设方案。根据该方法对四川省某镇供水系统进行了设计。

Seasonal Variation of Biochemical Components in Clam (Saxidomuspurpuratus Sowerby 1852) in Relation to Its Reproductive Cycle and the Environmental Condition of Sanggou Bay, China

Seasonal variation of biochemical components in clam(Saxidomus purpuratus Sowerby 1852) was investigated from March 2012 to February 2013 in relation to environmental condition of Sanggou Bay and the reproductive cycle of clam.According to the histological analysis,the reproductive cycle of S.purpuratus includes two distinctive phases:a total spent and inactive stage from November to January,and a gametogenesis stage,including ripeness and spawning,during the rest of the year.Gametes were generated at a low temperature(2.1℃) in February.Spawning took place once a year from June to October.The massive spawning occurred in August when the highest water temperature and chlorophyll a level could be observed.The key biochemical components(glycogen,protein and lipid) in five tissues(gonad,foot,mantle,siphon and adductor muscle) were analyzed.The glycogen content was high before gametogenesis,and decreased significantly during the gonad development in the gonad,mantle and foot of both females and males,suggesting that glycogen was an important energy source for gonad development.The protein and lipid contents increased in the ovary during the gonad development,demonstrating that they are the major organic components of oocytes.The lipid and protein contents decreased in the testis,implying that they can provide energy and material for spermatogenesis.The results also showed that protein stored in the mantle and foot could support the reproduction after the glycogen was depleted.

PLC应用于喷泉控制系统的方案设计

采用PLC与计算机组成的喷泉控制系统,充分利用PLC的通信功能和编程特点,实现上位机与下位机之间的通信和控制,由远程计算机与PLC之间进行通信,通过PLC实现对喷泉各种水型和灯光的快速控制;另一方面,利用PLC的自诊断功能,可实现喷泉控制系统的故障诊断,不但缩短了维修时间,而且提高了控制系统的稳定性。

Enhanced recovery programme in colorectal surgery:Does one size fit all?

Enhanced recovery after surgery(ERAS) employs a multimodal perioperative care pathway with the aim of attenuating the stress response to surgery and accelerating recovery.It has been difficult to determine the relative importance of some of the individual components of these pathways such as epidural analgesia and laparoscopic colorectal surgery.Some argue that only a rigid adherence to the published ERAS protocol can achieve the proposed benefits of fast-track surgery.In this article,we explore some of the areas where the evidence base may be changing and ask whether a more flexible and individualised approach should be considered.

Reproductive Cycle and Seasonal Variations in Lipid Content and Fatty Acid Composition in Gonad of the Cockle Fulvia mutica in Relation to Temperature and Food

From March 2004 to February 2005,seasonal variations in lipid content and fatty acid composition of gonad of the cockle Fulvia mutica(Reeve) were studied on the eastern coast of China in relation to the reproductive cycle and environment conditions(e.g.,temperature and food availability).Histological analysis as well as lipid and fatty acid analyses were performed on neutral and polar lipids of the gonad.Results showed that gametogenesis occurred in winter and spring at the expense of lipids previously accumulated in summer and autumn,whereas spawning occurred in summer(20.4-24.6℃).The seasonal variation in lipid content was similar to that of the mean oocyte diameter.In both neutral and polar lipids,the 20:5n-3 and 22:6n-3 levels were relatively higher than saturated fatty acids,and polyunsaturated fatty acids were abundant,with series n-3 as the predominant component.Seasonal variations in the 20:5n-3 and 22:6n-3 levels and the principal n-3 fatty acids were clearly related to the reproductive cycle.The ∑(n-3) and ∑(n-6) values were relatively high during January-May,and the associated unsaturation index was significantly higher than that in other months.The results suggest that fatty acids play an important role in the gametogenesis of F.mutica.

Correlation of VEGF expression,angiogenesis and carcinomatous change in breast tumors

Objective: The aim of the study was to detect the expression of vascular endothelial growth factor (VEGF) and microvessel density (MVD) in breast benign tissues and malignant tumors to clarify the relationship between VEGF expression, angiogenesis and breast carcinoma occurrence. Methods: The expression of VEGF and MVD in 79 cases of invasive ductal breast carcinoma, 79 corresponding para-cancer normal tissues from primary invasive breast carcinomas, 35 breast carcinoma in situ, 23 breast atypical hyperplasia and 56 breast fibroid tumor were examined by immunohistochemistry staining (SP-method). Results: The positive rate of VEGF and MVD value increased significantly with the increase of the malignant degree of breast tissues (P = 0.000). In breast carcinoma group, the positive rate of VEGF and MVD value with lymph node metastasis were higher than those without lymph node metastasis (P = 0.011 and P = 0.023). A significant higher expression of VEGF and MVD value were observed as the clinical stage increased (P = 0.035 and P = 0.012). The MVD value was higher in VEGF positive group than negative group (P = 0.000). Conclusion: The combining detection of VEGF expression and MVD is helpful for evaluating malignant degree of breast carcinoma. Angiogenesis in breast tumors and occurrence of breast carcinoma might be correlated with the expression of VEGF.

Physical, Chemical and Biochemical Changes of Sweetsop （Annona squamosa L.） and Golden Apple （Spondias citherea Sonner） Fruits during Ripening

This study aimed at the physical, chemical and biochemical changes during ripening of Sweetsop （Annona squamosa L.） and Golden Apple （Spondias citherea Sonner） fruits during ripening as important features to better understand their postharvest handling. It was carried out physical analysis such as firmness and chemical analysis such as total chlorophyll, total carotenoids, soluble solids, pectins and titrable acidity and biochemical analysis such as pectin methyl esterase, polygalacturonase, cellulase, and peroxidase and polyphenoloxidase activities in crude extract. Fruits were harvested at different stages of ripening. Experimental design was completely randomized and was carried out analysis of variance and Tukey tests, Total chlorophyll was decreasing in later stages of ripening, total soluble solid contents increased as the fruits ripen, while the acidity expressed percentage of citric acid decreased during fruits ripening. The loss of firmness and soluble solids content increased as the fruit get ripped stage, while the content of pectin decreased. Activity was observed for pectin methyl esterase and polygalacturonase enzymes during all stages of maturation, presenting the highest activity for both enzymes in the mature state. No cellulase activity detected at any stage during the ripening of these fruits. Activity of the enzyme polyphenoloxidase and peroxidase, associated with pulp browning was higher in the last stages of ripening of these fruits. Physical, chemical and biochemical patterns during ripening were different according to fruit species suggesting differential postharvest handling requirements.

善待“杂音”

语文教学是教师、学生、文本的对话过程,课堂是师生之间展示生命活力的平台。生命的复杂性和课程人文内涵的丰富性,决定了它不可能机械地按照教师课前的预设一成不变地展开,而是充满了生成和变化,充满了未知。如何面对这样的变化,这不仅考量一个教师的智慧,更关系到课堂的和谐以及对生命意义的认识与尊重。

长输管道沿线高程提取技术研究

在Googel Earth卫星地图上选出长输管道线路,将线路经纬度坐标及高程借助一些工具软件迚行自动提取,并经过一番处理,在Excel中生成散点图,即里高程变化图。

Effects of seasonal variations on soil microbial community composition of two typical zonal vegetation types in the Wuyi Mountains

Seasonal shifts play an important role in soil microbial community composition. This study examined the hypothesis that soil microbial community structure would vary with seasonal shifts in the Wuyi Mountains in Southeast China, and that two representative tree species （Castanopisi carlesii and Cunninghamia lanceolata） may have different soil microbial community composition. Phospholipids fatty acid analysis （PLFA） of seasonal shifts and was used to assess the effect vegetation types on soil microbial community structure. A total of 22 different PLFAs were identified from all the soil samples. The bacterial PLFAs accounted for 62.37% of the total PLFAs, followed by fungi （28.94%）, and the minimum was actinomycetes （6.41%）. Overall, the level of PLFAs in C. carlesii soil was greater than those in C. lanceolata soil, and significant differences were observed in some seasons. The amounts of total, bacteria, actinomycic and fungal PLFAs significantly changed with the seasons and followed a sequence order （summer 〉 autumn 〉 spring 〉 winter）. The bacteria/fungi PLFAs and G （＋）/G （-） PLFAs of two vegetation types also changed with the seasons and the ratios in summer and autumn were higher than those in spring and winter. The correlation analysis of microbial PLFAs and soil physicochemical properties showed that the total, bacteria, fungal, actinomycic, G （＋） and G （-） PLFAs were significantly positive correlation with TOC, TN, TP, TK and moisture content. We concluded that the seasonal shifts and vegetation types affect soil microbial community composition by changing the soil physicochemical properties.

Impacts of Climate Change on Net Primary Productivity in Arid and Semiarid Regions of China

In recent years, with the constant change in the global climate, the effect of climate factors on net primary productivity(NPP) has become a hot research topic. However, two opposing views have been presented in this research area: global NPP increases with global warming, and global NPP decreases with global warming. The main reasons for these two opposite results are the tremendous differences among seasonal and annual climate variables, and the growth of plants in accordance with these climate variables. Therefore, it will fail to fully clarify the relation between vegetation growth and climate changes by research that relies solely on annual data. With seasonal climate variables, we may clarify the relation between vegetation growth and climate changes more accurately. Our research examined the arid and semiarid areas in China(ASAC), which account for one quarter of the total area of China. The ecological environment of these areas is fragile and easily affected by human activities. We analyzed the influence of climate changes, especially the changes in seasonal climate variables, on NPP, with Climatic Research Unit(CRU) climatic data and Moderate Resolution Imaging Spectroradiometer(MODIS) satellite remote data, for the years 2000–2010. The results indicate that: for annual climatic data, the percentage of the ASAC in which NPP is positively correlated with temperature is 66.11%, and 91.47% of the ASAC demonstrates a positive correlation between NPP and precipitation. Precipitation is more positively correlated with NPP than temperature in the ASAC. For seasonal climatic data, the correlation between NPP and spring temperature shows significant regional differences. Positive correlation areas are concentrated in the eastern portion of the ASAC, while the western section of the ASAC generally shows a negative correlation. However, in summer, most areas in the ASAC show a negative correlation between NPP and temperature. In autumn, precipitation is less important in the west, as opposed to the east, in which it is critically important. Temperatures in winter are a limiting factor for NPP throughout the region. The findings of this research not only underline the importance of seasonal climate variables for vegetation growth, but also suggest that the effects of seasonal climate variables on NPP should be explored further in related research in the future.

Environmental change and its effects on inter-decadal variations of diatom production, species composition and frustule dissolution in a coastal marginal sea

The implications of climate change during the second half of the 20th century have been reported throughout the world. Although marginal seas are sensitive to climate change and anthropogenic impacts, relatively little attention has been given to the South East Asian marginal seas. Thus, to bridge this gap in knowledge, a sediment core was collected from the coastal areas of the Leizhou Peninsula in the South China Sea （SCS） to study the inter-decadal climate change and its consequences using diatom species composition as a proxy record. Diatom absolute abundance varied from 2 300 to 68 000 and averaged 16 000 valves per gram of dry weight （v/gdw）. The fractional dissolution index （F~） was usually below 0.5, which indicates low to moderate preservation of diatom valves at coastal area of the SCS. At the inter-decadal time scale, total diatom abundance was high for the period after 1972, which coincided with 1） increased percentage of planktonic diatom abundance and F~; 2） emergence and dominance of high productivity indicative cosmopolitan species such as Thalassionema nitzschioides and Paralia sulcata （their relative abundance increased from 〈1.5% to 〉7% for the period before and after 1972, respectively）; 3） decreased relative abundance of the small-sized eutrophication indicative species, Cyclotella striata, from 70% to 40%. This study reveals that variations in the abundance of diatoms preserved in the sediment was a function of both production and dissolution/preservation of diatom valves, which in turn was intimately connected to the prevailing environmental/climatic conditions. In conclusion, these data reveal the existence of substantial changes in the coastal SCS in response to the 1970s climate shift that was recorded in different parts of the world.