商麦8928抗旱性机理研究初报

针对新品种小麦-商麦8928的抗旱性，通过其色素含量、气孔数目及外部形态与抗旱性较强的小偃22对比，结果表明：商麦8928的抗旱性与以上几项指标密切相关，其抗旱性极强，适合在坡塬、旱坪地种植．     

商麦5226灌浆期旗叶酯酶同工酶的研究

以商洛市不同种植区的商麦5226为材料,采用聚丙烯酰胺凝胶电泳方法 ,对商麦5226灌浆期旗叶酯酶同工酶进行电泳分析。结果显示:不同种植区商麦5226灌浆期旗叶共电泳出16条EST同工酶酶谱带,其中,EST1-a、EST1-b、EST1-c、EST2-e、EST2-g、EST2-j是商麦5226稳定的特征谱带,可作为鉴别商麦5226的同工酶特征图谱;商洛北部区域种植的商麦5226灌浆期旗叶EST同工酶条带数在海拔较高种植区域相对较多,不同种植区商麦5226灌浆期旗叶酯酶同工酶均具有明显的多态性,显示商麦5226具有较强的适应性。     

Pb胁迫对旱地冬小麦种子萌发特性的影响

以商麦5226、商麦1619和3-3三种旱地小麦为供试材料,研究不同浓度Pb对供试小麦种子萌发特性的影响,采用隶属函数法综合评价供试品种的萌发期耐Pb性。结果表明,Pb胁迫后,种子发芽势呈增加趋势、发芽率呈下降趋势。随着Pb浓度增加,最大根长、芽长、芽鲜重和叶绿素含量呈下降趋势,幼苗可溶性糖含量显著提高。MDA含量随着Pb浓度的增加先减后增,POD活性则先增后减。商麦5226和商麦1619根系鲜重先减后增,而3-3根系鲜重呈下降趋势。中度胁迫下幼苗根长较对照降幅为88.59%～90.06%,芽长降幅为42.80%～50.81%;重度胁迫下幼苗根长较对照降幅为92.68%～93.87%,芽长降幅为58.91%～61.30%;Pb胁迫对幼苗根的抑制作用大于对芽的抑制。隶属函数分析表明,三种小麦品种在萌发期的耐Pb性表现为3-3>商麦5226>商麦1619。     

酸枣叶片组织结构与抗旱性的研究

对酸枣不同类型的幼叶、成龄叶组织解剖结构进行显微观察研究,结果表明酸枣叶片组织结构与抗旱性有密切关系,不同类型及同一类型不同发育期叶片组织结构有较大差异,其抗旱性也有所不同.幼叶以其高度发达的栅栏组织,无海绵组织和高密度的气孔而增强其抗旱性,成龄叶以其高的CTR值、栅海比、角质层厚度等而增强其抗旱性.     

酸枣叶片组织结构与抗旱性的研究

对酸枣不同类型的幼叶、成龄叶组织解剖结构进行显微观察研究，结果表明：酸枣叶片组织结构与抗旱性有密切关系，不同类型及同一类型不同发育期叶片组织结构有较大差异，其抗旱性也有所不同。幼叶以其高度发达的栅栏组织，无海绵组织和高密度的气孔而增强其抗旱性，成龄叶以其高的CTR值、栅海比、角质层厚度等而增强其抗旱性。     

商麦1619籽粒灌浆的特性

为明确商麦1619的灌浆特性,大田种植条件下测定其花后籽粒千粒重,Logsitic方程模拟灌浆曲线,并测定叶、叶鞘和茎杆干重,研究干物质的累积和分配情况。结果表明:商麦1619籽粒干重呈"S"型增长;灌浆分为渐增期、快增期和缓增期3个阶段,持续时间为缓增期>快增期>渐增期;累积籽粒重和灌浆速率均为快增期>渐增期>缓增期;平均灌浆速率(v)为1.21 g·(千粒·d)-1。干物质移动率(MR)为叶片>茎杆>叶鞘;干物质转运率(TR)为茎杆>叶片>叶鞘。     

水稻品种苗期抗旱性研究

测定不同抗旱能力的水稻品种在苗期水分胁迫逆境条件下的萌发、生长状况,胚乳淀粉酶活性,旨在能从苗期探讨品种的抗旱性能,鉴定出品种的抗旱性强弱。试验结果表明:苗期水分胁迫条件下,一叶一心期胚乳淀粉酶活性,种子的萌发指数,活力指数等均与抗旱性强弱密切相关。采用模糊数学隶属函数值法综合评价其抗旱性,与生产实际相吻合。     

VA菌根真菌提高沙棘抗旱性机理的研究

沙棘苗木菌根化能够提高其抗旱性 ,文章通过对菌根化苗木体内生理生化特性的研究 ,初步揭示了VA菌根真菌提高沙棘抗旱性的机理     

不同抗旱品种大豆苗中脯氨酸累积的差异

研究了干旱胁迫时不同抗旱性大豆品种苗中游离脯氨酸积累与大豆抗旱性的关系．结果表明，随着水分胁迫的加强，游离脯氨酸的累积显著增加，且抗旱性强的品种在干旱胁迫的前期游离脯氨酸累积量小于抗旱性弱的品种，但深度胁迫时其累积量则明显大于抗旱性弱的品种．脯氨酸的积累可作为大豆抗旱性的筛选指标．     

VA菌根真菌提高沙棘抗旱性机理的研究

沙棘苗木菌根化能够提高其抗旱性，文章通过对菌根化苗木体内生理生化特性的研究，初步揭示了VA菌根真菌提高沙棘抗旱性的机理。     

创造源于西方的中国现代虐恋小说

王小波对中国文学最值得重视的贡献,是自觉地从西方文学获得资源,创造了现代意义的中国虐恋小说,其贯穿始终的男女个体间虐恋关系的描写,具有独立的性社会学和美学的价值。李银河介绍西方虐恋理论和实践的《虐恋亚文化》是解读王小波小说的一把钥匙。但理论上把社会受虐和性受虐两种倾向混为一谈的模糊,却使作家的性幻想产生了某种迷误;而把《0的故事》作为推荐给中国人的西方虐恋文学范本,也暴露出作家思想上的不确定性。     

Social maladjustment and emotional disturbance: Problems and positions I

Several controversies continue to surround the differentiation between the socially maladjusted (SM) and seriously emotionally disturbed (SED). Central to the controversy is the interpretation of social maladjustment. At one extreme, some restrict the definition of SM to include (a) the socialized aggressive and (b) adjudicated delinquents. At the other extreme, SM is construed broadly and includes (a) Conduct Disorder (group type, solitary aggressive, and undifferentiated), (b) Oppositional Defiant Disorder, and (c) antisocial personality. An intermediate position presented herein argues for the inclusion of the socialized aggressive and unsocialized aggressive under the rubric of SM. Given that those in the anxious-withdrawn-dysphoric group are viewed as both SM and SED, they should be eligible for special education services assuming adverse educational impact is evident.     

The student–teacher relationship quality in children with selective mutism

Selective mutism (SM) is a rare anxiety disorder that compromises children's daily life during critical periods of early development. Because school is a prime context for the manifestation of the disorder, the aim of this study was to investigate the quality of the student–teacher relationship and its effects on behavior and work, and on social and relational skills. The sample consisted of 75 children—15 were affected by SM, with 60 in the control group—and 15 teachers. The results showed greater difficulty on the teacher's part to establish a relationship based on affective closeness with a child affected by SM, compared to that with unaffected children. Nevertheless, an encouraging picture emerges of the inclusion and integration of the child with SM among peers and therefore in the class group.     

Social maladjustment and emotional disturbance: Problems and positions II

Three controversial issues surrounding the differentiation between the socially maladjusted (SM) and the seriously emotionally disturbed (SED) are examined. The first issue addresses the question whether treatment methods should differ for these two groups. Some have argued that the same treatment methods should be used with both groups, while others advocate that differentiated treatment is necessary if these two groups are to receive an appropriate education. The second issue focuses on whether the SM are truly handicapped. Drawing upon professional opinion, research findings, and rational analysis, it is argued that the socially maladjusted as a group are free from serious emotional disturbance. The third issue pertains to the education of the SM. It is pointed out that many provisions for the SM are already available, although perhaps overlooked. The call for a continuum of services is made.     

大连中小企业的发展战略分析

中小企业是我国国民经济的重要组成部分,对推动科技创新、安置就业、提升城乡居民收入、带动城市经济发展起到重要作用。近年来,无论是中央政府还是地方政府都高度关注中小企业的发展,对中小企业的发展给予扶持和帮助,从而使中小企业成为城市经济新的增长力量。但是,中小企业在长期发展过程中,一直存在着创新能力不足,融资困难、应对外部环境变化经验不足等问题,这样使得中小企业发展困难重重,也在一定程度上制约了城市区域经济发展。因此,探讨大连中小企业发展的现状及主要存在的问题,明确未来发展方向,具有重要的现实意义。     

Interaction Between DEHP and Particulate in a Eutrophic Lake

Characteristics of interaction between di-2-ethylhexyl phthalate(DEHP) and particulate in a eutrophic lake were studied in this paper. DEHP concentrations ranged from 89.9 to 247 μg/L with an average value of 146 μg/L in subsurface water (SSW) samples, and from 82.0 to 390 μg/L with an average value of 211 μg/L in water surface microlayer (SM) samples. The results indicate that there was only a weak correlation between the DEHP concentrations and suspended particulate material(SPM) concentrations in both SSW and SM,while the significant correlation between DEHP concentrations and chlorophyll a concentrations was found,which suggestes that DEHP was principally bound to phytoplankton in the eutrophic lake. Correlation between DEHP concentrations and total phosphor (TP) concentrations was also found in this investigation. Enrichment factors (EF) of DEHP in SM were in the range of 0.85 to 2.12 with an average value of 1.35..DEHP EFs were significantly related to the enrichment of chlorophyll a in SM. The results suggest that the enrichment of DEHP in SM of this eutrophic lake was mainly due to DEHP accumulation in phytoplankton and was controlled by distribution of phytoplankton between SM and SSW.     

The role that schools hold in supporting young people with selective mutism: a systematic literature review

Schools are expected to hold an increasingly central role in co-ordinating support for children with mental health needs. However, the role that schools hold in supporting pupils with selective mutism (SM) is complex. Through a Critical Interpretive Synthesis (CIS), this review explores the multidimensional role which educational settings hold in supporting children with SM. Key databases were searched (PsycInfo, British Education Index, Education Resources Information Center, British Library EThOS and Google Scholar) and a conceptual map, informed by experienced practitioners, guided additional purposive searching with a focus on conceptual saturation. A total of twenty-four papers were identified following a further process of appraisal. Reciprocal Translational Analysis (RTA) found that schools hold a tripartite role in supporting children with SM: this incorporated developing a shared understanding of the disorder, engaging in effective (and often multi-professional) planning, and offering direct support through adapting provision and facilitating individual intervention. Through realising this role, schools and educational settings might transform the support currently available for children and young people with SM. Implications for practice, policy and future research also emerged. This included a clear need for enhanced teacher understanding of SM, arguably at the level of initial teacher training (ITT).     

基于 SM2 签名算法的高速密码卡实现

目前 SM2 签名算法应用越来越广泛,随着网络通信与电子交易业务的快速增长,其运算效率面临着前所未有的挑战。为了提高密码卡运算效率,设计并实现了一种基于 SM2 签名算法的高速密码卡。该密码卡利用协议组合运算的思想,减少了 DSP 与 FPGA 交互次数,提高了签名处理效率。同时,采用预计算技术将（1+ d）-1的值存储在密码卡中,降低了签名的计算复杂度。与传统基于 SM2 签名算法的密码卡相比,该密码卡签名速度提高了 22%,可适用于大量数据通信的场景。