Showing papers in "Journal of Laiyang Agricultural College in 2005"

Elliptic Curve Public-key Cryptosystem

Abstract: Recently elliptic curve public-key cryptosystem become a research focus in the field of compute information security. Compared with traditional public-key cryptosystem,elliptic curve public-key cryptosystem is very popular in security. It will take the place of traditional public-key cryptosystem, such as RSA,DSS etc. Firstly, the article introduce elliptic curve public-key cryptosystem and its relative knowledge. Then the study compare it with the traditional public-key cryptosystem. Finally, the thesis give the research hotspot and applicable foreground of elliptic curve public-key cryptosystem.

Breeding Process and Utilization of Excellent Maize Inbred Line 478

Abstract: The 478 maize inbred line was bred from two maize inbred lines 8112 and 5003.Plant shape of 478 is compact,and its plant height and ear height are lower,and inherited steadily.Furthermore,478 is high-resistant to many maize diseases and self-output.Because of its good characteristics,it is noticed by more and more maize breeding experts at home and oversea.According to the statistics,there have been 41 examined maize hybrid used 478 as parents by the province or nation,up to now,the 41 maize hybrids have covered at least 39570000 hectare plantation areas.Moreover,there have been 19 examined maize hybrids used its improved-line as parents,up to now,the 19 maize hybrids have covered at least 7960000 hectare plantation areas.

Structure and Seasonal Dynamics of Arthropod Community in Peach Garden

Abstract: Structure and dynamics of arthropod community in peach garden were studied through the function group and nutrition class. Dominance, diversity and evenness indexes of arthropod community were analyzed. It was indicated that function group could be used to analyze community structure because several similar species were amalgamated into function group reasonably, and it was more convenient than species in the study. Compared with the peach garden controlled chemically, the stability of the arthropod community in the ecological peach garden was higher because diversity and evenness indexes of arthropod community in the ecological peach garden were both higher than those in the peach garden controlled chemically.

Serological Survey of Canine Dirofilariasis in Dandong

Abstract: Serological survey of canine Dirofilariasis was conducted by ELISA with purified Dirofilaria immitis antigen in 1048 dogs of 12 breeds that in different ages and different breeding condition in Dandong.The results showed that: serum positive rate was 28.5%,and that of the worm examination was 22.6%.The positive rate detected by ELISA was higher than by worm examination,and the coincidence rate with the clinical examination was 100%.The infectious rate had no relation to the breeds and sex,but it related to the breeding condition and age.It provided powerful evidence for the prevention and treatment of canine Dirofilariasis.An application of the developed indirect ELISA had a great meaning to Dirofilariasis and it is important to prevent this disease.

The Research for the Grain-Flow-Measurement System on Real Time Based γ-ray Sensor in Laboratory

Abstract: Precision farming technology needs yield monitor to get yield map.In this paper,a grain-flow-measurement system using the principle of the Absorption of γ-rays by grains for combine harvesters was developed in laboratory and it was comprised of a dynamic simulation testing equipment,γray sensor,data acquiring and processing system.The test results show that measurement errors of this system are within±2%.

Studies on breeding and characters of good quality high tield wheat Yannong 19

Abstract: Analyses on conditions of good quality wheat breeding and consumptive need.Good quality high yield drought and wide adaptation act as breeding objectives.It's parents were selected and crossed by means of sexual hybridization between good quality high yield resistance wheat Yan1933,wide adapatation wheat Shan82-29.After 11 years,we bred good quality strong gluten wheat variety Yannong19.It was released by Shandong Jiangsu Shanxi Provinces Crop Cultivar Examination and Aproval Committee in 2001 and 2004,respectively.

Effects of Paclobutrazol ( PP333) on Free Endogenous Hormones Concentration in the Leaves of Rice and Wheat Seedling

Abstract: Hydroponics experiment was conducted to investigate effects of paclobutrazol ( PP333) on free endogenous hormones concentration in the leaves of rice and wheat seedling Results showed that free endogenous IAA and GA1/3 concentration in the leaves of rice and wheat seedling was negative correlation, and free endogenous ZRs and ABA concentration was positive correlation with concentration of paclobutrazol These showed that the balance and interaction of multi - hormones was one of regulation mechanisms of paclobutrazol ( PP333) to the growth of plant

Studies on Dynamic Omethoate Residues in Plants of Soybeans Shennong 6

Abstract: Omethoate belongs to organophosphorus. Field experiments were carried out in Shenyang Agricultural University during 2002 to 2003 for discovering the mechanism of omethoate residua, and Pressure Liquid Chromatography were used for omethoate residual dynamics in the body of soybean. Results showed that the curve of omethoate residual dynamic in root, stem and leaf of Shennong No. 6 were the similar trend, The R of simulative equation were significant, half-time of omethoate in root, stem and leaf of Shennong 6 were 9. 3d,9. 6d and 8. 8d; The terms of residue in root, stem and leaf were different a-mong spraying concentrations, residues stayed longer with the increase of concentration; There were no residue in pods and seeds under the highest concentration.