不同盐分含量的海冰水灌溉对棉花产量和品质的影响

采用不同盐分含量的海冰水进行棉花灌溉试验,结果表明:①经过1年3次灌溉和降雨淋洗作用,海冰水盐分含量为1g/L、3g/L和5g/L的灌溉处理,土壤均表现为明显的脱盐效果,在0～20cm表层土壤脱盐率随海冰水盐分含量升高而降低,脱盐率最高为1g/L处理,达到57.22%,分别高于3g/L和5g/L处理3.28%和18.34%;而盐分含量为7g/L和9g/L的灌溉处理0～80cm土壤各层次表现为积盐,以60～80cm积盐最为严重。②各处理以1g/L和3g/L海冰水灌溉棉花果枝数、单颗棉桃重和产量最高,随灌溉水盐分含量增加产量呈递减的趋势,9g/L海冰水灌溉3次的处理与无灌溉相比出现显著减产,减产率为28.48%;7g/L和9g/L的2个处理,棉花整齐度指数和断裂比强度都有降低趋势,但各处理间棉纤维品质差异不显著。综合考虑海冰水长期灌溉效应及海冰脱盐技术,建议采用3g/L海冰水进行棉田灌溉,并要注意配合必要的灌溉和排水措施。     

咸潮作用下上海水资源风险极值统计分析

长江口咸潮灾害使上海陈行水库和青草沙水库面临水资源匮乏的风险。本文从灾害风险角度,以极值统计原理拟合水库河段年最大连续不可取水时间超越概率分布。水库不可取水极值时间和日供水量作为水库缺水的风险因子,蒙特卡罗方法随机模拟分析陈行和青草沙水库的缺水风险。结果表明长江口盐水入侵造成的水库河段不可取水极值分布属于Gumbel-II(Frechet)型极值分布,陈行水库每年缺水事件的最大概率高于80%,青草沙水库仅为3%,与陈行水库实际运行情况及青草沙水库设计要求较一致;发生概率小于1%的巨灾事件中,青草沙水库水资源风险大于陈行水库。     

腐植酸钾浸种对玉米幼苗保护酶及MDA的影响

探索腐植酸钾浸种对提高作物生长的抗盐性及其在作物生长化学调控中的作用。采用不同浓度（0、300、400、500／xg／mL）的腐植酸钾浸种玉米,研究了在100mmol／LNaCl的盐胁迫环境下,三叶期玉米幼苗叶保护酶活性及丙二醛含量的变化。与对照相比,浸种玉米的超氧化物歧化酶活性增高,但无显著差异;浸种玉米的过氧化物酶活性增高,在4013·雌／mL时达极显著水平,在500μg／mL时达显著水平;浸种玉米的过氧化氢酶活性增高,在300、400μg/mL时分别达显著水平,在500μg／mL时达极显著水平;浸种玉米的丙二醛含量降低,在300—500μg／mL范围内达显著水平。腐植酸钾浸种玉米,可减轻玉米在盐胁迫下的膜脂过氧化程度,提高玉米抗盐性。     

Peer mentorship: a powerful buffer against those with legitimate right and power to bully subordinates

ABSTRACT

We used collective analytical autoethnography (CAAE) to investigate experiences of academic bullying and mobbing in our study. Specifically, four autoethnographers shared and analyzed personal experiences of being mobbed and bullied, described their perceptions of workplace bullying, its manifestations, and explored the emotional, social, psychological and career consequences associated with being bullied and mobbed at work. In addition, the autoethnographers reflected on different resources used to cope with mobbing and bullying experiences and revealed – peer mentorship and social support – as instrumental in helping them cope with both the physical and emotional distresses associated with the bullying and mobbing experiences. Implications from the findings and suggestions for future research are also presented.     

SBR工艺处理酱菜废水的试验研究

根据酱菜废水的水质特点,采用两级SBR处理酱菜废水,对其处理效能进行了研究。结果表明：室内温度维持在17～22℃,进水有机物浓度在3000mg/L,DO为4.2mg/L,反应器运行工况为进水0.5h—曝气8h—沉淀1h—滗水0.5h—待机2小时的条件下,二级SBB反应器对BOD、COD、TN、NH4＋-N、TP的去除率分别达到98.3%、97.5%、88.7%、97.1%、52.4%。     

北洋政府管理精盐工业政策浅析——以久大精盐公司为例

民国时期,精盐工业作为一种新兴工业,带动了近代制盐行业产运销制度的变革,推动了中国制盐技术的进步和盐业近代化的进程。然而,在当时特殊的政治环境下,由于精盐工业无法得到政府的有力扶持和鼓励,享受不到优惠的服务和税收政策,甚至会遭到政府当局的打压和歧视,致使这一新兴工业的发展之路步履蹒跚,充满坎坷。久大精盐公司作为当时成立最早、规模最大的精盐企业,无疑最具代表性,以其为例,既可探究北洋政府对精盐工业的管理政策,亦可窥视当时民营企业的发展状况。     

School programs to prevent intrafamilial child sexual abuse

The incidence of child sexual abuse would argue for the schools assuming a larger role in the development of preventive and educational programs. Because of the public school system's consistent and longitudinal contact with children and families it is perhaps the most promising institution for the delivery of preventive efforts. This article presents specific suggestions for school-based programs directed toward the prevention of intrafamilial child sexual abuse. Further, it is argued that for maximum effectiveness, the support of local parent-teacher organizations be elicited; that educational programs be presented separately for parents and children; and that a variety of programs in concert with the development level of participants be presented on topics related to child sexual abuse. Topics regarded as important for prevention efforts are factual information on sexual abuse, appropriate and inappropriate touch, the respective role responsibilities and rights of parents and children, and a sex education approach that stresses the values of nonexploitation and discrimination in the choice of whether to engage in sexual behavior and the choice of partners.     

南宋赣南私盐与盐子狱探析

本文从区域社会经济变迁的角度探讨南宋赣南私盐和盐子狱的动态演进。认为赣南私盐和盐子狱随着南宋军事斗争和财政状况的演化而或缓或剧,具有阶段性、跨区域、跨族群互动的特点。赣南盐子狱和私盐的盛行,反映了孕育期赣南客家社会经济发展变迁和宋代工商业力量成长的时代特征。     

盐胁迫对白菜幼苗逆境指标及蛋白激酶活性的影响

研究NaCl对白菜幼苗叶片内SOD，POD，CAT活性，Vc、脯氨酸、可溶性糖、蛋白质含量和蛋白激酶(Protoin Kinaso，PK)活性的影响以及激酶活性与部分金属离子的关系．结果表明，0．5%的NaCl能使白菜体内SOD，POD，CAT活性及Vc的含量降低．与此同时体内脯氨酸、可溶糖的含量增加，反应体系的Ca^2 、Mn^ 2、Mg^2 对蛋白激酶活性的发挥有显影响．     

论河东盐池对华夏文明起源的重要作用

池盐是中国最古老的可供人们直接捞取食用的盐种。河东盐池位于华夏文明发源地的中心地带，有着几千年的悠久历史，河东盐池对华夏文明的形成有过独特而重要的也是无可替代的作用。特别是在华夏族的早期形成过程中，远专华夏族部落首领们曾为争夺盐源而战，有着地利优势的盐池也因此成为尧舜禹三代建都晋南的决定性因素，同时，盐池又是夏商周三代文明重要的经济基础。基于以上几个方面的原因。得出的结论是：盐池时华厦文明的形成有着最直接的或者说是决定性的作用。