我国经济林林地稳定性研究

利用我国16个省市的最近两期森林资源连清固定样地数据，计算和比较经济林和非经济林的保存率，平均年龄，期望寿命等，对我国经济林的林地稳定性，通过定量研究，最后得出我国经济林林地稳定性明显不如非经济林林地稳定性的结论。     

大鼠垂体前叶内IFN-γ免疫阳性神经纤维的分布

应用免疫组化SP法发现大鼠垂体前叶内有IFN－γ免疫反应阳性纤维存在。纤维主要有纤维型和膨体型两种形式。纤维型表现为细、短淡染的IFN－γ免疫反应神经纤维；膨体型表现为大小不等、深染的点状结构。这些纤维围绕在腺细胞周围，与腺细胞有密切关系。阳性纤维周围有丰富的血管，血管壁上也可看到阳性纤维。     

寿光鸡杂交试验

用寿光鸡与黑乌骨鸡、斗鸡和AA鸡进行杂交试验，结果表明：①寿光鸡与黑乌骨鸡杂交，其F2代体增重介于两品种之间，跖长比寿光鸡降低17．2％；羽型多表现为扁羽，约15％为丝状羽；皮肤为白色；均为5趾。②鲁西斗鸡与寿光鸡杂交F3代与寿光鸡相比，体增重降低6．3％，料重比增加5．9％，胸宽增加5．3％。③寿光鸡与AA鸡杂交，F1代增重速度比寿光鸡本身提高85．2％，料重比降低14．3％。④白乌骨鸡比黑乌骨鸡增长快，F1代比黑乌骨鸡100日龄增重提高24％，比白乌骨鸡本身增重快9．1％。     

感染鸡传染性贫血病毒的雏鸡新城疫疫苗免疫后局部体液免疫球蛋白含量变化

本试验对感染鸡传染性贫血病毒（ＣＩＡＶ）雏鸡新城疫（ＮＤ）疫苗免疫及其强毒攻击后，其泪液、气管液、肠液和胆汁的免疫球蛋白ＩｇＧ、ＩｇＭ、ＩｇＡ含量的动态变化进行了检测。结果发现，感染雏鸡泪液的ＩｇＧ、ＩｇＡ和气管液的ＩｇＧ及胆汁的ＩｇＧ、ＩｇＭ、ＩｇＡ含量均于接种ＮＤ疫苗后７～２８天明显低于未感染ＣＩＡＶ的免疫对照雏鸡；泪液的ＩｇＭ和气管液的ＩｇＡ含量在ＮＤ免疫后１４～２８天明显降低；肠液的ＩｇＡ和ＩｇＭ、ＩｇＧ含量分别于免疫后７～１４和７、１４天也显著减少。表明ＣＩＡＶ感染雏鸡对ＮＤ疫苗免疫的局部体液免疫应答能力降低。ＮＤ强毒攻击后，ＣＩＡＶ感染ＮＤ免疫雏鸡泪液、气管液、肠液和胆汁的ＩｇＧ、ＩｇＡ、ＩｇＭ含量及免疫保护率，均明显低于未感染ＣＩＡＶ的免疫对照雏鸡。     

柔性管理对新时期乡镇企业人力资源管理的启示

知识经济时代,乡镇企业迅猛发展,并面临前所未有的挑战,如何使乡镇企业在日趋激烈的市场竞争中立于不败之地,实施人力资源柔性化管理是其关键因素之一。据此,在对人力资源柔性管理的内涵、作用进行深入分析的基础上,从战略高度论述了乡镇企业组织对农民工实施人力资源柔性管理的意义,并提出乡镇企业柔性化管理农民工的具体对策。     

德宏水牛及其不同杂交品种肉质特性研究

选择德宏水牛及其不同杂交品种共15头,即尼本水牛(尼里水牛×德宏水牛)、摩本水牛(摩拉水牛×德宏水牛)的F1代和德宏水牛各5头,进行了肉质化学和物理特性研究。结果显示,尼本水牛(57.73%)和摩本水牛(53.63%)的熟肉率有显著差异(P<0.05);尼本水牛(0.93%)比摩本水牛(1.03%)的粗灰分高10.75%(P=0.04);而其它化学成分和物理特性都没有显著差异。此项试验说明,通过尼里水牛或摩拉水牛与德宏水牛的杂交并没有显著改变德宏水牛肉质的化学和物理特性。     

QTL analysis of cooked rice grain elongation, volume expansion, and water absorption using a recombinant inbred population

The traits of elongation, volume expansion, and water absorption are very important in determining the quality of cooked rice grains. In this study, quantitative trait loci (QTL) analysis of these traits was performed using a recombinant inbred population derived from a cross between two indica cultivars, ‘Zhenshan 97’ and ‘Minghui 63 ,’ which are the parents of the most widely grown hybrid rice in China. Using a linkage map based on 221 molecular marker loci covering a total of 1796 cM, a total of 33 QTLs were identified for the nine traits tested. QTLs were detected on chromosomes 1– 3 , 5– 9 , and 11 , respectively. The QTLs identified included three for cooked rice grain length elongation (chromosomes 2 , 6 , and 11), six for width expansion (chromosomes 1‐ 3 , 6 , 9 , and 11) and two for water absorption (chromosomes 2 and 6). Interestingly, a single QTL located near the wx gene on chromosome 6 seemed to influence all the traits tested for the cooked rice quality.     

利用TaqMan-SNP基因分型技术快速鉴别玉米杂交种与其亲本

根据玉米1个多态性SNP位点DNA序列设计TaqManSNP分型引物和探针,对5个杂交玉米组合进行分型分析,根据双亲互补的原则,确认该位点可用于2个杂交玉米品种与其亲本的鉴别.利用该位点对种子样品进行检测,能准确将混杂其中的亲本鉴定出来.与SSR标记相比,TaqMan-SNP分型技术不仅鉴定结果准确,而且具有速度快、易判定等优点,适合杂交玉米种子纯度的快速鉴定.     

3-D Simulation on the Transient Heat Transfer Characteristics of Municipal Solid Waste Lump in Clean Incinerator

To be effectively heated in incinerator for MSW is very important for stabilization and completeness combustion, the smaller produce of the PCDD/Fs. At the same time, the transient heat transfer characteristics of the MSW lump decides the stay time of the MSW in incinerator and effects on the operation feature of the combustion equipments. All of these would lead to design the reasonable and clean combustion project, the optimum incinerator and recover energy system. The component, shape, dimension, property, the hardly and inner structure feature of the MSW lump are taken in account, and the effective conduct heat coefficient has been adopted. And then, the physical model is setup with different shape(ball, cylinder, squareness), and the 3-D mathematical model and conduct heat efficient with porous feature for transient heat transfer of MSW lump are presented, at the same time, the simulation tests are gotten in various boundary and the interesting conclusions are gotten: The center stable temperature of the MSW lump is mostly decided by the inner gas temperature of the incinerator and the heated area of the lump. The transient heat transfer characteristics is variously effected by the shape of the MSW lump in incinerator. The transient process becomes longer and the center stable temperature decreases, the volatile can't be easily separated out and the combustion efficiency decreases because of the increasing of the lump feature dimension.     

不同萌发率胡杨种子萌发前后同工酶动态变化分析

对不同萌发率的胡杨种子萌发前后酯酶同工酶、过氧化物酶同工酶和超氧化物歧化酶同工酶电泳谱带的动态变化进行分析.研究表明:对于吸胀的种子,过氧化物酶同工酶没有表达;酯酶同工酶得到表达,且萌发率中等的种子表达最高;超氧化物歧化酶同工酶也得到表达,但萌发率高的种子几乎没有表达;对于干种子,酯酶同工酶没有表达,过氧化物酶同工酶得到表达,且萌发率中等的种子表达最高;超氧化物歧化酶同工酶得到充分的表达.