Tb^(3+)在YAG中的发光及Tb^(3+)与Tm^(3 +)间的能量传递

采用溶胶 -凝胶方法合成了系列化合物 (Y1 -x- yTbxTmy) 3Al5O1 2 ,研究了Tb3+在该化合物中的发光及其浓度对发光性质的影响 ,以及Tb3+与Tm3+间的能量传递现象。

斑茅F1品系崖城96-66与CP84-1198杂交后代的鉴别

对斑茅F1品系崖城96-66×CP84-1198杂交后代进行过氧化物酶和酯酶同工酶分析,并与父母本酶带作比较。结果表明,受检的20个株系中,除YCE01-62不具斑茅的特征酶带外,其它19个株系都具有斑茅的酶带,可初步认为是斑茅的第二代杂种。对其中7个株系进行了DNA分子标记分析,结果显示除YCE01-62为杂株外,其它株系均确认为真杂种。在本研究中,同工酶方法的结果与DNA分子标记方法的结果相似。

粳杂80优9号高产制种技术四项辅助试验

对粳型杂交稻８０优９号制种时实施的“父本栽插苗数”、“父母本栽插行比”、“生物激素利用”和“父本氮肥深施”试验的结果表明，该组合高产制种父本以穴栽３粒种子苗为宜，最佳行比为２∶１０，九二○用量为８ｇ／６６７ｍ２。分析了父本深施氮肥必须注意的问题。

新疆博格达绒山羊与尼勒克本地山羊的杂交效果

新疆博格达绒山羊品种遗传性稳定,外貌特性一致,具有产绒量高,绒纤维细,耐粗饲粗放,适应性强等特点,为进一步探讨该品种与本地(尼勒克)山羊的杂交效果,加快我地区绒山羊的杂交利用,提高本地山羊产绒量,增加农牧民收入,提供了科学依据.于1995年至1999年选点进行定点观测,目前已取得了良好的效果.

Teachers' Self-Development in Applying Information Communication Technology

This paper reports a case study of my self-development in applying Information Communication Technology （ICT） to teaching. I analyzed my own growth from three perspectives： technical confidence and competence, pedagogical development and self-efficacy. Classroom observation, interviews, reflective journals and questionnaires were used to explore how professional self-development occurred when I changed my teaching belief in teaching, and how I understood the development as a practicing teacher in learning by teaching. I participated in various projects based on action research in order to meet the challenges of the teaching reform in the new era. The results indicate that teachers can develop their informational quality and professional competence in applying ICT in teaching.

国民党时期甘肃省政府金塔县政府文书处理史料两件

现将国民党时期甘肃省政府和金塔县政府文书处理史料两件公布,供研究者参考。